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1
Zhou, Hua, Huahua Wu, Chengjin Ye, Shijie Xiao, Jun Zhang, Xu He und Bo Wang. „Integration Capability Evaluation of Wind and Photovoltaic Generation in Power Systems Based on Temporal and Spatial Correlations“. Energies 12, Nr. 1 (05.01.2019): 171. http://dx.doi.org/10.3390/en12010171.
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With the rapid growth of renewable energy generation, it has become essential to give a comprehensive evaluation of renewable energy integration capability in power systems to reduce renewable generation curtailment. Existing research has not considered the correlations between wind power and photovoltaic (PV) power. In this paper, temporal and spatial correlations among different renewable generations are utilized to evaluate the integration capability of power systems based on the copula model. Firstly, the temporal and spatial correlation between wind and PV power generation is analyzed. Secondly, the temporal and spatial distribution model of both wind and PV power generation output is formulated based on the copula model. Thirdly, aggregated generation output scenarios of wind and PV power are generated. Fourthly, wind and PV power scenarios are utilized in an optimal power flow calculation model of power systems. Lastly, the integration capacity of wind power and PV power is shown to be able to be evaluated by satisfying the reliability of power system operation. Simulation results of a modified IEEE RTS-24 bus system indicate that the integration capability of renewable energy generation in power systems can be comprehensively evaluated based on the temporal and spatial correlations of renewable energy generation.
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Huang, Ke, Xin Wang, Yi Hui Zheng, Li Xue Li und Yan Ling Liu. „Reliability Analysis of Distribution Network with Integrated Photovoltaic Power Generation“. Applied Mechanics and Materials 672-674 (Oktober 2014): 956–60. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.956.
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To analyze the influence of distribution network with grid-connected photovoltaic (PV) generation on the power supply reliability, in this paper it firstly regards interconnected PV generation as an equivalent generator with rated capacity as well as the island operation mode of PV to set up a model for reliability calculation and analysis. Based on the network equivalent method, the structure of distribution system with PV is simplified and then the reliability indexes of distribution system are worked out based on Failure Mode and Effects Analysis (FMEA). At last, a comparative calculation between the distribution network with incorporated PV generations and that without PV generations is made. After analyzing a real example, the results suggest that integrating PV power generations reasonably into the distribution network can enhance the reliability of whole distribution system.
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Lee, Seung-Min, Eui-Chan Lee, Jung-Hun Lee, Sun-Ho Yu, Jae-Sil Heo, Woo-Young Lee und Bong-Suck Kim. „Analysis of the Output Characteristics of a Vertical Photovoltaic System Based on Operational Data: A Case Study in Republic of Korea“. Energies 16, Nr. 19 (06.10.2023): 6971. http://dx.doi.org/10.3390/en16196971.
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The proliferation of renewable energy sources to achieve carbon neutrality has rapidly increased the adoption of photovoltaic (PV) systems. Consequently, specialized solar PV systems have emerged for various installation purposes. This study focuses on grid connecting vertically installed bifacial PV modules facing east and west by establishing a test bed within Republic of Korea. Based on weather and generation data collected in Republic of Korea, located in the middle of latitude 34.98° N, from January to July 2023, we analyzed and compared the generation patterns, peak generation, peak hours, and total generation of conventional and vertical PV systems. Moreover, PVsyst was used to model the solar PV generation and analyze the consistency and viability of vertical PV generation by comparing actual operational data with simulation results. The vertical PV system demonstrated a peak power generation of 89.1% compared with the conventional PV system with bifacial modules. Based on operational data from January to July, the power generation output of the vertical PV system decreased to 65.7% compared with that of the conventional system with bifacial modules. This corresponded to 78.8% to 80.2% based on the PVsyst simulation results. In particular, the investigations related to the peak generation levels and occurrence times of vertical PV systems provide insights into the practicality of vertical solar PV systems and their potential for improving the PV hosting capacity.
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Abedi, Sajjad, Gholam Hossein Riahy, Seyed Hossein Hosseinian und Arash Alimardani. „Risk-Constrained Unit Commitment of Power System Incorporating PV and Wind Farms“. ISRN Renewable Energy 2011 (19.12.2011): 1–8. http://dx.doi.org/10.5402/2011/309496.
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Wind and solar (photovoltaic) power generations have rapidly evolved over the recent decades. Efficient and reliable planning of power system with significant penetration of these resources brings challenges due to their fluctuating and uncertain characteristics. In this paper, incorporation of both PV and wind units in the unit commitment of power system is investigated and a risk-constrained solution to this problem is presented. Considering the contribution of PV and wind units, the aim is to determine the start-up/shut-down status as well as the amount of generating power for all thermal units at minimum operating cost during the scheduling horizon, subject to the system and unit operational constraints. Using the probabilistic method of confidence interval, the uncertainties associated with wind and PV generation are modeled by analyzing the error in the forecasted wind speed and solar irradiation data. Differential evolution algorithm is proposed to solve the two-stage mixed-integer nonlinear optimization problem. Numerical results indicate that with indeterminate information about the wind and PV generation, a reliable day-ahead scheduling of other units is achieved by considering the estimated dependable generation of PV and wind units.
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Jeong, Han Sang, Jaeho Choi, Ho Hyun Lee und Hyun Sik Jo. „A Study on the Power Generation Prediction Model Considering Environmental Characteristics of Floating Photovoltaic System“. Applied Sciences 10, Nr. 13 (29.06.2020): 4526. http://dx.doi.org/10.3390/app10134526.
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The main contents of this paper are to verify the environmental factors affecting the power generation of floating photovoltaic systems and to present the power generation prediction model considering environmental factors by using regression analysis and neural networks studied during the last decade. This study focused on a comparative analysis of which model is best suited for the power generation prediction of the floating photovoltaic (PV) system. To compare the power generation characteristics of a floating and a land-based PV system, two identical 2.5 kW PV systems were installed—one on the water surface in the Boryeong Dam, Korea, and the other nearby on dry land—and their performances were compared. The solar irradiance of the floating PV system was 1.1% lower than that of the land-based PV. Nevertheless, the floating PV module temperature was 4.9% lower than that of the land-based PV, generating approximately 3% more power. Using the correlation analysis of data mining techniques, environmental factors affecting the efficiency of the floating PV system were investigated. The correlation coefficient between the module temperature and water temperature was r = 0.6317 which proves that the high efficiency and low module temperature characteristics of the floating PV system, when compared with that of the land-based PV, are due to the water evaporation effect. Considering environmental factors, power-generation prediction models based on regression analysis and neural networks are presented, and their accuracies are compared. This comparison confirms that the accuracy of the power generation prediction model using neural networks was approximately 2.59% higher than that of the regression analysis method. As a result of adjusting the hidden nodes in the neural network algorithm, it was confirmed that a neural network algorithm with ten hidden nodes was most suitable for calculating the amount of power generation.
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Alsafasfeh, Qais. „An Efficient Algorithm for Power Prediction in PV Generation System“. International Journal of Renewable Energy Development 9, Nr. 2 (15.04.2020): 207–16. http://dx.doi.org/10.14710/ijred.9.2.207-216.
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Aiming at the existing photovoltaic power generation prediction methods, the modeling is complicated, the prediction accuracy is low, and it is difficult to meet the actual needs. Based on the improvement of the traditional wavelet neural network, a dual-mode cuckoo search wavelet neural network algorithm combined prediction method is proposed, which takes into account the extraction of chaotic features of surface solar radiation and photovoltaic output power. The proposed algorithm first reconstructs the chaotic phase space of the hidden information of each influencing factor in the data history of PV generation and according to the correlation analysis, the solar radiation is utilized as additional input. Next, the proposed algorithm overcomes the limitations of the cuckoo search algorithm such as the sensitivity to the initial value and searchability and convergence speed by dual-mode cuckoo search wavelet neural network algorithm. Lastly, a prediction model of the proposed algorithm is proposed and the prediction analysis is performed under different weather conditions. Simulation results show that the proposed algorithm shows better performance than the existing algorithms under different weather conditions. Under various weather conditions, the mean values of TIC, EMAE and ENRMSE error indicators of the proposed forecasting algorithm were reduced by 43.70%, 45.75%, and 45.41%, respectively. Compared with the Chaos-WNN prediction method, the prediction performance has been further improved under various weather conditions and the mean values of TIC, EMAE and ENRMSE error indicators have been reduced by 25.55%, 27.26%, and 36.83%, respectively. ©2020. CBIORE-IJRED. All rights reserved
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Adeiah James, Penrose Cofie, Anthony Hill, Olatunde Adeoye, Pam Obiomon, Charles Tolliver und Justin Foreman. „Alleviating power line congestion through the use of a renewable generation“. World Journal of Advanced Engineering Technology and Sciences 7, Nr. 2 (30.11.2022): 013–28. http://dx.doi.org/10.30574/wjaets.2022.7.2.0117.
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Over the past few decades, there has been an ever-increasing penetration of Renewable Energy Generation in the power grid. However, unlike in the past, where fossil fuel generating plants are mostly located in remote areas, and in the proximity of the source of energy, the most common of the renewable generations, such as solar power systems, are haphazardly sited close to the loads because the source of energy, the sun, exists almost everywhere. This unplanned siting of renewable generating systems aggravates the power distribution lines congestion that already exists due to the power distribution deregulation. This paper presents a procedure that takes advantage of utilization and proper placement of Photovoltaic (PV) power systems to alleviate power line congestion. In this procedure, the base case load flow, without the solar generating system, is performed on the distribution network. And the bus with the lowest voltage is identified; this low voltage bus is indicative of congestion in the lines connecting the identified bus. A PV power system is then tied to that bus; the capacity of the PV generation is varied heuristically to determine the optimality that mitigates the congestion on the lines. The procedure is followed to test a 9-bus IEEE power system, and the results are presented.
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Wynn, Sane Lei Lei, Terapong Boonraksa, Promphak Boonraksa, Watcharakorn Pinthurat und Boonruang Marungsri. „Decentralized Energy Management System in Microgrid Considering Uncertainty and Demand Response“. Electronics 12, Nr. 1 (03.01.2023): 237. http://dx.doi.org/10.3390/electronics12010237.
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Smart energy management and control systems can improve the efficient use of electricity and maintain the balance between supply and demand. This paper proposes the modeling of a decentralized energy management system (EMS) to reduce system operation costs under renewable generation and load uncertainties. There are three stages of the proposed strategy. First, this paper applies an autoregressive moving average (ARMA) model for forecasting PV and wind generations as well as power demand. Second, an optimal generation scheduling process is designed to minimize system operating costs. The well-known algorithm of particle swarm optimization (PSO) is applied to provide optimal generation scheduling among PV and WT generation systems, fuel-based generation units, and the required power from the main grid. Third, a demand response (DR) program is introduced to shift flexible load in the microgrid system to achieve an active management system. Simulation results demonstrate the performance of the proposed method using forecast data for hourly PV and WT generations and a load profile. The simulation results show that the optimal generation scheduling can minimize the operating cost under the worst-case uncertainty. The load-shifting demand response reduced peak load by 4.3% and filled the valley load by 5% in the microgrid system. The proposed optimal scheduling system provides the minimum total operation cost with a load-shifting demand response framework.
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Herez, Amal, Hassan Jaber, Hicham El Hage, Thierry Lemenand, Mohamad Ramadan und Mahmoud Khaled. „A review on the classifications and applications of solar photovoltaic technology“. AIMS Energy 11, Nr. 6 (2023): 1102–30. http://dx.doi.org/10.3934/energy.2023051.
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<abstract> <p>Our aim of this work is to present a review of solar photovoltaic (PV) systems and technologies. The principle of functioning of a PV system and its major components are first discussed. The types of PV systems are described regarding the connections and characteristics of each type. PV technology generations are demonstrated, including the types, properties, advantages and barriers of each generation. It was revealed that the first generation is the oldest among the three PV generations and the most commonly utilized due to its high efficiency in spite the high cost and complex fabrication process of silicon; the second generation is characterized by its low efficiency and cost and flexibility compared to other generations; and the third generation is not commercially proven yet in spite the fact that it has the highest efficiency and relatively low cost, its raw materials are easy to find and its fabrication process is easier than the other generations. It was shown that the target of all the conducted studies is to study the PV technology to enhance its performance and optimize the benefit from solar energy by reducing conventional energy dependence, mitigating CO<sub>2</sub> emissions and promote the economic performance.</p> </abstract>
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Han, Xian Sui, und Qi Hui Liu. „Modeling and Simulation of Grid-Connected Photovoltaic System Based on PSCAD“. Advanced Materials Research 986-987 (Juli 2014): 367–70. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.367.
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In order to investigate the impacts of large scale PV power plants on the stability of power system, dynamic PV models are of particular interest to the industry for simulating large-scale power systems. The transient model of large scale grid-connected PV generation system was given based on the model of each component of PV generation system. Response of the model was simulated respectively when the illumination changes. The methods proposed could be applied to the power grid with photovoltaic generation integration.
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Shamsuddin, Noor Ilham, Madihah Md Rasid und Mohd Shafiq Anuar. „COST-EFFECTIVE ENERGY MANAGEMENT SYSTEMS STRATEGY IN OPTIMIZATION OF PHOTOVOLTAIC FOR GRID-CONNECTED SYSTEM“. Jurnal Teknologi 85, Nr. 1 (02.12.2022): 115–24. http://dx.doi.org/10.11113/jurnalteknologi.v85.17688.
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Renewable Energy Source (RES) based Distributed Generation (DG) like Photovoltaic (PV) is widely integrated into the distribution network, particularly for residential. With proper planning, the installation of optimal PV in the network is capable of minimizing the dependency on the power grid generation. However, the optimum use of solar energy has been limited by the weather and the load variation. At the particular time, the generated PV output is not fully utilized during the minimum load. The excessive generation of PV power occurs and causes an increase in the cost of electricity consumption. Therefore, the purpose of this paper is to optimize the PV size for the grid-connected system considering the Battery Energy Storage System (BESS) and the proper Energy Management System (EMS) Strategy in order to reduce the grid power consumption. BESS is introduced to store the excess PV power generated during peak hours, while the cost-effective EMS strategy is proposed to ensure the RES is fully employed. The number of PV panels is optimized using Particle Swarm Optimization (PSO) technique. The implementation of PSO in optimising PV size can reduce the number of PV panels by 21% compared to the conventional method.
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Wang, Sijia, Xiangyu Wu, Gang Chen und Yin Xu. „Small-Signal Stability Analysis of Photovoltaic-Hydro Integrated Systems on Ultra-Low Frequency Oscillation“. Energies 13, Nr. 4 (24.02.2020): 1012. http://dx.doi.org/10.3390/en13041012.
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In recent years, ultralow-frequency oscillation has repeatedly occurred in asynchronously connected regional power systems and brought serious threats to the operation of power grids. This phenomenon is mainly caused by hydropower units because of the water hammer effect of turbines and the inappropriate Proportional-Integral-Derivative (PID) parameters of governors. In practice, hydropower and solar power are often combined to form an integrated photovoltaic (PV)-hydro system to realize complementary renewable power generation. This paper studies ultralow-frequency oscillations in integrated PV-hydro systems and analyzes the impacts of PV generation on ultralow-frequency oscillation modes. Firstly, the negative damping problem of hydro turbines and governors in the ultralow-frequency band was analyzed through the damping torque analysis. Subsequently, in order to analyze the impact of PV generation, a small-signal dynamic model of the integrated PV-hydro system was established, considering a detailed dynamic model of PV generation. Based on the small-signal dynamic model, a two-zone and four-machine system and an actual integrated PV-hydro system were selected to analyze the influence of PV generation on ultralow-frequency oscillation modes under different scenarios of PV output powers and locations. The analysis results showed that PV dynamics do not participate in ultralow-frequency oscillation modes and the changes of PV generation to power flows do not cause obvious changes in ultralow-frequency oscillation mode. Ultra-low frequency oscillations are mainly affected by sources participating in the frequency adjustment of systems.
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Angelino dos Santos, Thiago, Filipe Gomes de Freitas, Diego Lima Carvalho Gonçalves und Luis Miguel Fernández-Ramírez. „Design and validation of IoT measurement system for photovoltaic generation“. Ingenius, Nr. 28 (01.07.2022): 44–52. http://dx.doi.org/10.17163/ings.n28.2022.04.
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The use of photovoltaic (PV) systems for electricity generation is constantly growing in Brazil. With the reduction in the price of PV modules and the implementation of the electric power compensation system by the power distributor, the consumer is investing in PV microgeneration to reduce the electricity bill. This article aims to develop an embedded system in the context of the Internet of Things (IoT). Having an IoT monitoring system applied to a grid-connected PV system in an educational institution helps teach concepts such as IoT and PV generation. The system is based on the ESP32 development board for acquiring DC voltage and current generated by a 1.35 kWp PV system connected to the grid and installed at the IFCE. This proposal offers a low-cost educational solution using open source and programmable hardware, which sends the data to a database in the cloud, enabling remote access worldwide. Then, using the data analysis methodology, it was possible to validate the values measured with the inverter installed with an error below 1% for the voltage and current acquired during one day. With this result, it is concluded that the designed IoT system can be used for measurement in PV systems.
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Shneen, Salam Waley. „Advanced Optimal For PV system coupled with PMSM“. Indonesian Journal of Electrical Engineering and Computer Science 1, Nr. 3 (01.03.2016): 556. http://dx.doi.org/10.11591/ijeecs.v1.i3.pp556-565.
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The main advantages of PMSM are high torque density, high efficiency and small size. Photovoltaic power generation system PV generation technology is treated as the most promising technology among renewable energies. Photovoltaic (PV) power generation system is a promising source of energy with great interest in clean and renewable energy sources. To use different control systems, like Classical PI Controller, Expert System Fuzzy Logic Controller and Optimization PSO Controller. It used to control for power electronic (inverter) &PMSM which worked in the integration system to PV energy. There are two parts in this paper, first part advanced Optimal PSO, Fuzzy &PI Controller power electronic (inverter) with PV for using different control systems this part on the generator side at constant torque. Second part in the load side of variable torque, by using different control systems with PMSM to analyze all results after using the simulation model of proposed based PV system. The PV system is coupled with PMSM. A closed loop control system with a PI control, Fuzzy, PSO in the speed loop with current controllers.
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Yoo, Jong Ho, Sun Hee Kim, Dong Jun An, Won Chang Choi und Soon Jong Yoon. „Generation Efficiency of Tracking Type Floating PV Energy Generation Structure Using Fiber Reinforced Polymer Plastic (FRP) Members“. Key Engineering Materials 730 (Februar 2017): 212–17. http://dx.doi.org/10.4028/www.scientific.net/kem.730.212.
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In this paper, the tracking type floating PV energy generation system is studied and developed to improve the generation efficiency. First of all, to find suitable material for members of floating type PV energy generation system, suitability analysis for several materials such as a steel, aluminum, polyethylene (PE), and fiber reinforced polymer plastic (FRP) is conducted. Then the design for tracking type floating PV energy generation system is also conducted. The tracking type floating PV energy generation system is designed, fabricated, and installed at Hapcheon dam, Korea. Finally, to estimate the energy generation efficiency of tracking type floating PV energy generation system, comparison with land fixed type PV energy generation system is performed. As a result of the comparison, it is confirmed that if the period of operating PV energy generation system is longer, the economic efficiency of tracking type will be higher than that of land fixed type.
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Shu, Xin, Shi Ping Zhou, Yong Jun Xia, Gang Hu und Yang Lei. „The Study on a Simplified Model of Photovoltaic Power System“. Advanced Materials Research 860-863 (Dezember 2013): 13–17. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.13.
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As the proportion of photovoltaic power increasing, the impact on the power system is evident. An accurate mathematical model for PV power generation system is necessary. This paper demonstrates the detailed mathematic models for PV power generation system consisted of PV cell, converters, flow model are summarized. This work might provide a generic PV power system models for the research of characteristics of PV generation system and its grid-connected operation.
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Ji, Luyao, Zhenhua Liu, Yakun Liu, Huaiyu Jin, Wenli Wang, Wenying Yu und Yongsheng Liu. „Research on the Influence of Load Difference for Photovoltaic Micro-grid System Performance“. Journal of Solar Energy Research Updates 9 (13.08.2022): 9–15. http://dx.doi.org/10.31875/2410-2199.2022.09.02.
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Abstract: In this paper, make use of PVSOL software studied the generation performance and Economic benefits of PV system at various inclinations. And then analyzed residential load, industrial load and commercial load system performance and self-sufficiency under different battery capacity. The results show that for Shanghai area, when the inclination angle of PV panel is about 23o, the annual total power generation of PV system reaches the maximum. The self-sufficiency rate of PV systems with industrial load is higher than commercial load, and the self-sufficiency rate of PV systems with residential load is the lowest. The self-sufficiency rate of PV systems with batteries are higher than PV systems without batteries, and the increment of installation power can increase self-sufficiency rate of the PV system.
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Kumar, Jerry, Nanik Ram Parhyar, Manoj Kumar Panjwani und Danish Khan. „Design and performance analysis of PV grid-tied system with energy storage system“. International Journal of Electrical and Computer Engineering (IJECE) 11, Nr. 2 (01.04.2021): 1077. http://dx.doi.org/10.11591/ijece.v11i2.pp1077-1085.
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With the increasing demand for solar energy as a renewable source has brought up new challenges in the field of energy. However, one of the main advantages of photovoltaic (PV) power generation technology is that it can be directly connected to the grid power generation system and meet the demand of increasing energy consumption. Large-scale PV grid-connected power generation system put forward new challenges on the stability and control of the power grid and the grid-tied photovoltaic system with an energy storage system. To overcome these problems, the PV grid-tied system consisted of 8 kW PV array with energy storage system is designed, and in this system, the battery components can be coupled with the power grid by AC or DC mode. In addition, the feasibility and flexibility of the maximum power point tracking (MPPT) charge controller are verified through the dynamic model built in the residential solar PV system. Through the feasibility verification of the model control mode and the strategy control, the grid-connected PV system combined with reserve battery storage can effectively improve the stability of the system and reduce the cost of power generation. To analyze the performance of the grid-tied system, some real-time simulations are performed with the help of the system advisor model (SAM) that ensures the satisfactory working of the designed PV grid-tied System.
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Alshahrani, Abdullah, Siddig Omer und Yuehong Su. „An Investigation into the Potential of Hosting Capacity and the Frequency Stability of a Regional Grid with Increasing Penetration Level of Large-Scale PV Systems“. Electronics 10, Nr. 11 (24.05.2021): 1254. http://dx.doi.org/10.3390/electronics10111254.
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It is widely believed that the incorporation of renewable energy to the current power grid is the way forward in achieving sustainable power generation. Currently, with the reduction of PV prices, many countries have started connecting PV systems into their grid network, hence leading to a sharp increase of the penetration levels of renewable electricity production. This will bring significant change in the load pattern and the ramping requirements of the grid’s conventional generation system due to the varying nature of the renewable energy generation. This significant change affects the stability of the grid frequency because it becomes more challenging for the system operators to maintain the equilibrium between the generation and load. Additionally, this significant change affects the PV system potential hosting capacity of the traditional grid because of the PV system’s curtailment in order to comply with the constraints of the grid’s conventional generation system. In this paper, the net load, grid frequency stability, and grid potential hosting capacity are evaluated in the situation of increasing the penetration level of large-scale PV systems generation into the grid. The results show that the grid operators will face increasingly variable net load patterns and steeper ramping events as the PV system penetration level increases. Additionally, the results show the requirement of having flexibility measures that target each grid constraint as the PV system penetration level increases.
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Rakhshani, Elyas, Kumars Rouzbehi, Adolfo J. Sánchez, Ana Cabrera Tobar und Edris Pouresmaeil. „Integration of Large Scale PV-Based Generation into Power Systems: A Survey“. Energies 12, Nr. 8 (13.04.2019): 1425. http://dx.doi.org/10.3390/en12081425.
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This paper reports a general overview of current research on analysis and control of the power grid with grid scale PV-based power generations as well as of various consequences of grid scale integration of PV generation units into the power systems. Moreover, the history of PV renewable growth, deregulation of power system and issues related to grid-connected PV systems considering its contribution to various responsibilities like frequency control, virtual inertia capabilities and voltage regulation are discussed. Moreover, various outcomes of the high-penetrated grid with PV power plants such as power quality, active and reactive power control, protection, balancing and reliability under various loading conditions are reviewed and discussed.
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Raut, Ankita. „Solar PV-Wind Hybrid Energy Generation System“. International Journal for Research in Applied Science and Engineering Technology 9, Nr. VI (30.06.2021): 3593–97. http://dx.doi.org/10.22214/ijraset.2021.35733.
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Renewable energy systems area unit seemingly to become wide spread within the future thanks to adverse environmental impacts and step-up in energy prices connected with the exercise of established energy sources. Solar and wind energy resources area unit various to every different which can have the particular potential to satisfy the load quandary to a point. However, such solutions any time researched severally aren't entirely trustworthy thanks to their impact of unstable nature. During this perspective, autonomous electrical phenomenon and wind hybrid energy systems are found to be a lot of economically viable various to meet the energy demands of diverse isolated shoppers worldwide. Conservation of energy is extremely traditional these days however management of energy is extremely essential issue to figure on the idea of change to energy generation devices for continuous provide of dc storage conjointly demand of electricity is increasing day by day however accessible wattage plants aren't ready to provide electricity as per the strain wants. The main objective of the project is to supply a framework for promotion of enormous grid connected wind - solar PV hybrid system for optimum and economical utilization of transmission infrastructure and land. Project conjointly aims to encourage new technologies, ways and way-outs involving military operation of wind and solar PV plants. Battery storage could also be other to the hybrid project to cut back the variability of output power from wind solar hybrid plant, for providing higher energy output for a given capability at delivery purpose, by putting in further capability of wind and solar energy in an exceedingly wind solar hybrid plant and making certain handiness of firm power for a specific amount.
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Javadpoor, S., und D. Nazarpour. „Modeling a PV-FC-Hydrogen Hybrid Power Generation System“. Engineering, Technology & Applied Science Research 7, Nr. 2 (24.04.2017): 1455–59. http://dx.doi.org/10.48084/etasr.760.
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Electrical grid expansion onto remote areas is often not cost-effective and/or technologically feasible. Thus, isolated electrical systems are preferred in such cases. This paper focuses on a hybrid photovoltaic (PV)-hydrogen/fuel cell (FC) system which basic components include a PV, a FC, alkaline water electrolysis and a hydrogen gas tank. To increase the response rate, supercapacitors or small batteries are usually employed in such systems. This study focuses on the dynamics of the system. In the suggested structure, the PV is used as the main source of power. The FC is connected to the load in parallel with the PV by a transducer in order to inject the differential power while reducing power generation in relation to power consumption. An electrolyzer is used to convert the surplus power to hydrogen. This study studies a conventional hybrid photovoltaic-hydrogen/fuel cell system to evaluate different loading behaviors. Software modeling is done for the suggested hybrid system using MATLAB/SIMULINK.
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Lincy, G., Dr M. Ponnavaikko und Dr Lenin Anselm W. A. „The economic benefit analysis to the consumer and utility due to PV generation connected to the radial distribution system“. International Journal of Engineering & Technology 7, Nr. 4 (17.09.2018): 2314. http://dx.doi.org/10.14419/ijet.v7i2.18.12584.
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During the recent past, the interest towards adoption of Distributed Generation (DG) has increased dramatically among the electric power system utilities. It has been well established that installation of PV Generation at the load points in a distribution system is excellent advantages for both consumers and the utilities. The question arises whether the maximum beneficiary is the Utility or the consumer and who has to bear the cost. This research analyses the economics of the DG with PV Systems, taking a typical 400V distribution system. A detailed procedure adopted for performing the economic analysis is presented in this paper. Benefits considered includes Saving in the energy losses, Energy substitute by the PV system, Capacity release in the Feeders and the Transformer. The PV system is installed at the selected consumer load points, based on the size and location of the loads. Discounted Cash Flow technique is used to assess the economics of the system, by computing the Internal Rate of Return. The paper presents the advantages of using PV Generating systems in the Power Distribution System, quantifying economic benefits both for the Utilities and for the Customers with supporting data.
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Han, Fei, Ning Zhou, Jian Wei Ma und Xian Ling Yu. „Power Flow Calculation for Distribution System Including PV Type Distributed Generation“. Applied Mechanics and Materials 694 (November 2014): 159–62. http://dx.doi.org/10.4028/www.scientific.net/amm.694.159.
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After distribution network with PV type distributed generation, it emerged PV nodes. Advanced forward and backward substitution method is proposed based on ant colony optimization method to improve power flow solution, which is a method based on ant colony optimization calculation algorithm of reactive power correction, improved the model of PV type distributed generation in the power flow calculation.Use PSSSINCAL power system simulation software to set up the model of distribution System including PV type distributed generation. Through the results of simulation calculation show that the algorithm can cope with power flow solution for distribution system including PV type distributed generation effectively, and the convergence property is very good.
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Hsieh, Wei Lin, Chia Hung Lin, Chao Shun Chen, Cheng Ting Hsu, Chin Ying Ho und Hui Jen Chuang. „Optimal Penetration of Photovoltaic Systems in Distribution Networks“. Applied Mechanics and Materials 479-480 (Dezember 2013): 590–94. http://dx.doi.org/10.4028/www.scientific.net/amm.479-480.590.
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The penetration level of a PV system is often limited due to the violation of voltage variation introduced by the large intermittent power generation. This paper discusses the use of an active power curtailment strategy to reduce PV power injection during peak solar irradiation to prevent voltage violation so that the PV penetration level of a distribution feeder can be increased to fully utilize solar energy. When using the proposed voltage control scheme for limiting PV power injection into the study distribution feeder during high solar irradiation periods, the total power generation and total energy delivered by the PV system over a 1-year period are determined according to the annual duration of solar irradiation. With the proposed voltage control to perform the partial generation rejection of PV systems, the optimal installation capacity of PV systems can be determined by maximizing the net present value of the system so that better cost effectiveness of the PV project and better utilization of solar energy can be obtained.
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Yang, Yong, Dong Tao Wang, Qing Mei Yao und Wen Zhen Cai. „Matpower Based Power Flow Calculation with Grid-Connected Photovoltaic“. Applied Mechanics and Materials 713-715 (Januar 2015): 1343–46. http://dx.doi.org/10.4028/www.scientific.net/amm.713-715.1343.
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Photovoltaic (PV) power generation is one of important direction of future energy development by most countries. The research on power flow calculation of power system with grid-connected photovoltaic generation based on Matpower is given in this paper. Firstly, a stochastic model of PV system is presented in the paper. Then, Matpower is used in the simulation of power flow for IEEE 57 node system. Simulation results of with PV generation and without PV generation in IEEE 57 node system are presented. Comparison between the results shows that adding PV generation in power system will have great influence on power flow of power system.
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Li, Tianyu, Shengyu Tao, Ruixiang Zhang, Zhixing Liu, Lei Ma, Jie Sun und Yaojie Sun. „Reliability Evaluation of Photovoltaic System Considering Inverter Thermal Characteristics“. Electronics 10, Nr. 15 (23.07.2021): 1763. http://dx.doi.org/10.3390/electronics10151763.
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The reliable operation of photovoltaic (PV) power generation systems is related to the security and stability of the power grid and is the focus of current research. At present, the reliability evaluation of PV power generation systems is mostly calculated by applying the standard failure rate of each component, ignoring the impact of thermal environment changes on the failure rate. This paper will use the fault tree theory to establish the reliability assessment method of PV power plants, model the PV power plants working in the variable environment through the hardware-in-the-loop simulation system, and analyze the influence of the thermal characteristics of the inverter’s key components on the reliability of the PV power plant. Studies have shown that the overall reliability of bus capacitors, inverters, and PV power plants is reduced by 18.4%, 30%, and 18.7%, respectively, compared to when the thermal characteristics of bus capacitors are not considered. It can be seen that thermal attenuation has a great influence on the reliability of the PV power generation system.
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Yao, Jianan, Junfeng Zhu, Binbin Wang, Junkui Niu, Wenbing Liu, Long Chen und Yifan Song. „Application of Photovoltaic Systems in Field Observation and Research Stations: Research on the Relationship between Power Generation Scale and Electricity Consumption to Improve Photovoltaic Application in Field Observation Stations“. International Journal of Photoenergy 2023 (17.04.2023): 1–11. http://dx.doi.org/10.1155/2023/6701631.
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Most field scientific observation and research stations are located at the end of power grids which are usually not extended to such areas. Consequently, the power supply of equipment in field observation stations cannot be guaranteed. Meanwhile, regions with poor ecosystem stability are relatively sensitive to environmental changes and thus prone to degradation and succession due to external interference. In this paper, the photovoltaic (PV) power generation system of a grassland ecohydrological field scientific observation and research station was taken as the research object. Two kinds of distributed PV power generation systems were simulated and analyzed by use of PVsyst software. The total power of laboratory equipment, PV power generation efficiency, and system cost of the field observation station were calculated and analyzed. The design scheme and scale of PV power generation systems suitable for field observation stations were determined. Finally, a PV power generation test system was set up, and PV power generation data were sorted out. The feasibility of the design scheme of PV power generation systems was verified by analyzing the relationship between the simulated and actual power generation of systems and that between the daily energy use proportions of field observation stations. Besides, the environmental benefits of PV systems were analyzed, and their amount of energy saving and emission reduction was calculated. This study can solve the issue of the low power supply guarantee rate of field observation stations, provide a design basis and beneficial reference for the construction of environment-friendly field laboratory stations, and realize green energy saving and the sustainable use of energy while protecting the ecosystem from being destroyed.
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Li, Feng Feng, Qiu Xuan Wu, Li Juan Huang und Yu Jie Huang. „PV Cells Power Generation System Modeling Based on Heat Energy Efficiency“. Advanced Materials Research 986-987 (Juli 2014): 1977–83. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1977.
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Temperature is one of the important factors affecting the power generation efficiency of PV cells. In order to improve the efficiency of photovoltaic power generation systems and heat utilization efficiency, we used Matlab/Simulink to build photovoltaic power system analysis model based on thermal power. By changing the heat and illumination input to the photovoltaic cell model and the heat generated by the battery we got the characteristics and temperature characteristics of the photovoltaic cell the system model, the photovoltaic power generation system model and the output power correction, etc. We got the environmental temperature change equation through the actual air temperature and curve fitting and used real and detailed data to compare the data obtained using the equation for online correction. PV cells temperature factor was used to get the PV cells temperature with the environment temperature changes. In order to get PV module thermal /energy efficiency the dates was processed and analyzed by using Matlab and Excel through actual observation data of school 120KW PV power station. The results showed that power generation efficiency increased and year average efficiency PV improved 21.3279% through the use of some heat about PV cells.
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Díaz-Araujo, Marcolino Humberto, Aurelio Medina-Rios, Manuel Madrigal-Martínez und Luis Arthur Cleary-Balderas. „Analysis of Grid-Connected Photovoltaic Generation Systems in the Harmonic Domain“. Energies 12, Nr. 24 (16.12.2019): 4785. http://dx.doi.org/10.3390/en12244785.
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In this contribution, a harmonic domain (HD) model of grid-connected photovoltaic (PV) generation systems is proposed. The topology of the PV generation system contains a PV array connected to a DC/DC converter and a DC/AC converter, coupled to the grid through a filter. The individual components of the PV system are modeled in the HD. The PV array is represented as a Thevenin equivalent, whereas the DC/DC converter and the DC/AC converter are represented in the HD using switching function matrices. The periodic steady-state solution of the PV system is obtained through simple matrix/vector operations. The results obtained by the proposed model are validated against the response obtained with the PSCAD/EMTDC® simulator, widely accepted by the power industry.
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Jurasz, Magdalena, und Jerzy Mikulik. „Energy self-consumption from PV systems: estimations for two office buildings in Krakow (Poland)“. E3S Web of Conferences 100 (2019): 00030. http://dx.doi.org/10.1051/e3sconf/201910000030.
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The analysis presented in this paper focuses on the energetic aspects of the use of photovoltaic (PV) systems in office buildings. Energy generation from PV system has been simulated on an hourly time scale and compared with the energy demand of two office buildings located in Krakow (southern Poland). The buildings’ annual load exceeded 1 GWh in both cases. The analysis dealt with estimating how much energy generated by a PV system can be utilized on-site (self-consumption) and how big the energy surpluses will be (energy generation greater than demand). Capacities of PV systems ranging from 0.1 to 1.0 MW have been considered. Also, the impact of PV generation on the residual load parameters and changes in the maximal monthly and hourly energy demand were investigated. The results show that although the building energy demand is similar (in terms of annual volume of energy consumed) the potential of PV systems to cover it is different. The 100-kW PV system can reduce the observed hourly peak energy demand by 1% in December but by over 30% in June (respectively, from 171 kWh to 169 kWh, and from 333 kWh to 255 kWh). Considering the annual patterns of the office buildings’ energy demand and PV generation (both have their respective peaks in summer), the application of a PV system changes the office building energy demand pattern significantly from the perspective of the power system operator. After installing 500 kW PV in an office building consuming 1 GWh annually, the months with highest demand are no longer in summer but in winter.
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Mohd Tajudin, Mohammad Nayeim Fazumy, M. N. M. Hussain und M. M. Hussain. „INTEGRATED MODEL OF SOLAR PV INTERCONNECTION USING PSSE SOFTWARE“. Journal of Information System and Technology Management 7, Nr. 27 (01.09.2022): 27–42. http://dx.doi.org/10.35631/jistm.727002.
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Due to increase demand of renewable energy, the interest on the solar power plant has recently grown dramatically. However, when a huge generation of power was generating from the solar power plant to the grid interconnection, the system tends to create a stability problem since the generation is depend on varying of solar irradiance. A huge sudden drop of the irradiance will tend to interrupt the stability of the system. When there is large solar power is used it might be interrupting the stability of the PV plant. When there is system increase in penetration to the system the system may be loss its stability which can interrupt the system operation that cause by large penetration trough the PV system. This paper presents the development PV model from scratch until dynamic stability assessment in the PSSE software in order to study the stability of the generation of PV plant to the grid interconnection by developing 30 bus system in the software.
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Htaik, Myo, Ryoichi Hara und Hiroyuki Kita. „Study on Fault and Isolated Condition in Two Circuit Configurations of PV-ESS Hybrid System“. ISRN Renewable Energy 2012 (11.04.2012): 1–11. http://dx.doi.org/10.5402/2012/863813.
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Most photovoltaic (PV) generation systems are connected with a utility grid and recognized as supplemental generation resources; but in some applications such as microgrid concept, a PV system works as a main resource. To improve the availability of PV systems, technological development for higher less output fluctuation in normal condition, higher fault tolerance in fault occurrence, and power demand and supply balancing in isolated condition are required. For these reasons, hybridization of a PV system and an energy storage system (ESS) would become an important technology in the future. This paper presented two kinds of circuit models, conventional “ac-connected PV-ESS,” and proposed “dc-connected PV-ESS” in which ESS is inserted at the dc-side of PV system. This paper also investigated dc-link voltage controlled by dc-dc converter of ESS in dc-connected PV-ESS and suitable control systems are also discussed normal, during fault occurrence and isolated operation.
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Hsieh, Shih Chieh, Chao Shun Chen, Chia Hung Lin und Wei Lin Hsieh. „Benefit-Cost Analysis for Private PV System Investment with DSTATCOM Compensation“. Advanced Materials Research 1030-1032 (September 2014): 2527–31. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.2527.
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This paper presents a benefit-cost analysis for private photovoltaic (PV) system investment with distribution static compensator (DSTATCOM) compensation to enhance the PV penetration in distribution systems. A hybrid voltage control scheme with reactive power compensation from DSTATCOMs and active power curtailment is applied to avoid the violation of voltage variation caused by large PV power injection. The PV power generation is estimated based on local solar irradiation and temperature data. The annual curve of PV power generation and annual energy delivered to the distribution system with the hybrid voltage control scheme are also determined. The annual revenue of PV power sales, the initial capital investment cost of a PV system with or without a DSTATCOM, and the operating and maintenance cost are then considered to evaluate the benefit and cost of the PV investment over its life cycle.
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Chang, Wen Yeau. „Power Generation Forecasting of Solar Photovoltaic System Using Radial Basis Function Neural Network“. Applied Mechanics and Materials 368-370 (August 2013): 1262–65. http://dx.doi.org/10.4028/www.scientific.net/amm.368-370.1262.
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An accurate forecasting method for power generation of the solar photovoltaic (PV) system can help the power systems operator to reduce the risk of unreliability of electricity supply. This paper proposed a radial basis function (RBF) neural network method to forecast the power generation of PV system. To demonstrate the effectiveness of the proposed method, the method is tested on the practical information of power generation of a PV system. The good agreements between the realistic values and forecasting values are obtained; the numerical results show that the proposed forecasting method is accurate and reliable.
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SARATHKUMAR, Mr S., Mr R. DHAKSHINESH, Mr M. LAKSHAN SUGAN und Mr S. RAJESH. „SOLAR PV BASED POWER PLANT STABILITY HARMONICS CONTROL BY BOOST CONVERTER WITH FUZZY LOGIC“. INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 07, Nr. 09 (01.09.2023): 1–11. http://dx.doi.org/10.55041/ijsrem25735.
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Abstract-This is a well-known fact that the world is facing climatic risk from the emission of power generating plants. Thermal power plant is causing mercury pollution which is very dangerous to human health as it affects the neural system. In light of such ugly facts now all the developed countries are changing their focus on renewable source of energy for sustainable and emission free power. we are considerably High PV dispersion levels can occupy the steady state and the transient stability of the systems outstanding to their various description. that differ from conventional generation property. We are considering an important amount of conservative generation with high PV generation may be replaced with increase PV property. A much needed renewable source with zero emission has got sufficiently large possible of energy which can be harness by using a number of devices available. Synchronized manage of the included power system is fruitfully done with the THD mechanism within universal of parameters. Keywords: Integration of Grid, PV Cells, PV Module, Array, Boost Converter, Fuzzy Logic, Harmonics Analysis.
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Singh, Garima, und Bharat Raj Singh. „Impact of PV-CSP Intergrated System for Power Generation“. SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 11, Nr. 02 (25.12.2019): 155–62. http://dx.doi.org/10.18090/samriddhi.v11i02.10.
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Solar and Wind energy is available in plenty in the country like India.Solar power is the conversion of sunlight into electricity, either directly using photovoltaic (PV), or indirectly using concentrated solar power (CSP). Wind is the indirect form of solar energy and is always being replenished by the sun. Wind energy is the kinetic energy of air in motion also called wind.Technical potential of onshore wind energy is large. CSP technology with thermal storage having potential to replace the conventional thermal power plant.Advantage of CSP technology is that thermal storage technology is easily integrated with the CSP technology in compare with the photovoltaic and wind power technology. When the PV is hybridized with Wind it does not meet the satisfactory performance. PV and Wind power generation technologies not suitable at grid level due to intermittency in the availability of sun and wind. Hybridization of PV with CSP is the option to sole the intermittency problem and provide the energy at grid level. The research status of PV-CSP hybrid technology for its performance is summarized from the study made in this paper to provide a current global scenario, but it is observed that for economic and efficient power generation with the effective proportions of integrated PV-CSP hybrid systems that are yet to be researched.
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Hossain, MD Shouquat, Naseer Abboodi Madlool, Ali Wadi Al-Fatlawi und Mamdouh El Haj Assad. „High Penetration of Solar Photovoltaic Structure on the Grid System Disruption: An Overview of Technology Advancement“. Sustainability 15, Nr. 2 (08.01.2023): 1174. http://dx.doi.org/10.3390/su15021174.
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Solar photovoltaic (PV) power generation is distinct from conventional power generation systems. It is vital to comprehend the effect of an expanded control system on solar PV generation. This article discusses the advancement made to the module, which is critical to PV and electric power systems, to achieve a high PV penetration in the smart grid system. The first zone initiates the solar power energizing transformation, which transfers a controlled energy load to a grid system. The descriptive subsections consider the accessibility of electronic inverters, solar PV energies, and grid concepts, as well as their realizability. As a result, a case study was considered, where various scientists around the world participated, discussion ensued, and future suggestions were made. Finally, practical conclusions were drawn from the investigations. This paper infers that the improvement of appropriate methods is fundamental to the viability and effectiveness of overseeing a high infiltration of PV inside low-voltage (LV) conveyance systems. This review provides an overview of the current state, effects, and unique difficulties associated with PV penetration in LV appropriation systems. Nonetheless, grid innovation is not well developed, and it requires continuous research from various rational aspects.
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Yu, Hwanuk, Jaehee Lee und Young-Min Wi. „Day-Ahead PV Generation Scheduling in Incentive Program for Accurate Renewable Forecasting“. Applied Sciences 14, Nr. 1 (26.12.2023): 228. http://dx.doi.org/10.3390/app14010228.
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Photovoltaic (PV) power can be a reasonable alternative as a carbon-free power source in a global warming environment. However, when many PV generators are interconnected in power systems, inaccurate forecasting of PV generation leads to unstable power system operation. In order to help system operators maintain a reliable power balance, even when renewable capacity increases excessively, an incentive program has been introduced in Korea. The program is expected to improve the self-forecasting accuracy of distributed generators and enhance the reliability of power system operation by using the predicted output for day-ahead power system planning. In order to maximize the economic benefit of the incentive program, the PV site should offer a strategic schedule. This paper proposes a PV generation scheduling method that considers incentives for accurate renewable energy forecasting. The proposed method adjusts the predicted PV generation to the optimal generation schedule by considering the characteristics of PV energy deviation, energy storage system (ESS) operation, and PV curtailment. It then maximizes incentives by mitigating energy deviations using ESS and PV curtailment in real-time conditions. The PV scheduling problem is formulated as a stochastic mixed-integer linear programming (MILP) problem, considering energy deviation and daily revenue under expected PV operation scenarios. The numerical simulation results are presented to demonstrate the economic impact of the proposed method. The proposed method contributes to mitigating daily energy deviations and enhancing daily revenue.
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Choi, Youngjin. „Seasonal Performance Evaluation of Air-Based Solar Photovoltaic/Thermal Hybrid System“. Energies 15, Nr. 13 (27.06.2022): 4695. http://dx.doi.org/10.3390/en15134695.
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Recently, the use of novel renewable energy has attracted attention for suppressing the generation of carbon dioxide to prevent global warming. There is growing interest in energy reduction in buildings using solar energy because of its ease of use and repair and excellent maintenance. Therefore, in this study, air-based Photovoltaic thermal (PVT) systems, which can increase the utilization of solar energy, are compared with the existing PV system through measurement. PVT systems can increase the amount of power generation by lowering the temperature of the panel using air passing through the lower part of the panel. It is also possible to use the heated air obtained from the panel as indoor heating or for supplying hot water in a building. As a result of measuring the performance of existing PV panels and PVT panels under the same weather conditions, the power generation efficiency of PVT panels through which air passes increases compared to PV panels. Overall, an air-based PVT system can utilize solar energy about three times more than existing PV systems by utilizing solar heat and solar power. In summer, thermal collection and power generation by PVT were 51.9% and 19.0%, respectively, and power generation by PV was 18.0%. In contrast, the amount of thermal collection and power generation in winter was 43.5% and 20.3%, respectively, and the amount of power generated by PV was 18.7%. As such, it is necessary to review methods for utilizing the increase in power generation in winter and thermal collection in summer.
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Wu, Fan, Jun Wang, Zhang Sun, Tao Wang, Lei Chen und Xiaoyan Han. „An Optimal Wavelet Packets Basis Method for Cascade Hydro-PV-Pumped Storage Generation Systems to Smooth Photovoltaic Power Fluctuations“. Energies 12, Nr. 24 (06.12.2019): 4642. http://dx.doi.org/10.3390/en12244642.
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Due to the volatility of natural resources, the power fluctuations of photovoltaic (PV) generation have serious negative impacts on the power quality. This paper reports a novel approach to resolve this problem in a combined cascade hydro-PV-pumped storage (CH-PV-PS) generation system through appropriate power distribution on a small time scale. According to the characteristics of power generation systems and multi-constraints, how to obtain the optimal smoothing effects with the small cost is a key challenge. For this purpose, wavelet packet decomposition is modified by constructing cost function and ideal power trajectory sequences to obtain a new adaptive power distribution method for the CH-PV-PS generation system considering the boundary conditions of the system in this paper. At the same time, to meet the real-time control requirements of actual systems, an additive function is presented to improve the optimization speed of the adaptive power distribution method. In the meantime, a fuzzy controller is designed to optimize the inevitable delay time of the power scheduling system, and the starting threshold is set to avoid the frequently mode conversion of pumped storage. Finally, the performance of the method is evaluated based on the PV station data in Xiaojin County, Sichuan Province, China. Simulation results based on Matlab-simulink indicate that the proposed method can effectively suppress PV power fluctuations and ensure normal operation of the CH-PV-PS generation system within the multiple constraints.
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Han, Hua Ling, Zhen Li, Tao Shi und Ning Chen. „Effect Study of Large-Scale PV Power Access to HVDC System“. Advanced Materials Research 772 (September 2013): 640–45. http://dx.doi.org/10.4028/www.scientific.net/amr.772.640.
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In order to realize electric power high voltage, large capacity, long distance transmission and regional power grid interconnection, dc transmission system is an important technical means, and it plays an important role for cross-regional given of new large-scale energy power generation. Based on large scale photovoltaic (PV) power generation access to the northwest power grid as the object, this article set up PV power station model, analysis the influence of large-scale PV power access to HVDC system under different PV station operating mode and the grid disturbance situation. At last this paper puts forward suggestions and measures to guarantee stable operation of large scale PV power generation access to the system.
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Li, Wei, Hui Ren, Ping Chen, Yanyang Wang und Hailong Qi. „Key Operational Issues on the Integration of Large-Scale Solar Power Generation—A Literature Review“. Energies 13, Nr. 22 (14.11.2020): 5951. http://dx.doi.org/10.3390/en13225951.
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Solar photovoltaic (PV) power generation has strong intermittency and volatility due to its high dependence on solar radiation and other meteorological factors. Therefore, the negative impact of grid-connected PV on power systems has become one of the constraints in the development of large scale PV systems. Accurate forecasting of solar power generation and flexible planning and operational measures are of great significance to ensure safe, stable, and economical operation of a system with high penetration of solar generation at transmission and distribution levels. In this paper, studies on the following aspects are reviewed: (1) this paper comprehensively expounds the research on forecasting techniques of PV power generation output. (2) In view of the new challenge brought by the integration of high proportion solar generation to the frequency stability of power grid, this paper analyzes the mechanisms of influence between them and introduces the current technical route of PV power generation participating in system frequency regulation. (3) This section reviews the feasible measures that facilitate the inter-regional and wide-area consumption of intermittent solar power generation. At the end of this paper, combined with the actual demand of the development of power grid and PV power generation, the problems that need further attention in the future are prospected.
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Zingariello, Daniele, Marija Demicoli und Luciano Mule’ Stagno. „Income Maximisation in a Maltese Household Photovoltaic System by Means of Output and Consumption Simulations“. Energies 14, Nr. 23 (26.11.2021): 7934. http://dx.doi.org/10.3390/en14237934.
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The installation of photovoltaic (PV) systems in the Maltese Islands plays an important role in allowing Malta to increase its share in renewable energy to meet the set European Union targets. In the Maltese residential sector, PV systems are generally installed on rooftops of households with a south-facing orientation and a 30° inclination angle. The scope of this study is to present a methodology to maximise the income for residents from electricity generated, by comparing the output of electricity generation with the electricity consumption patterns of different household types and consequently identifying the most favourable installation configurations of these PV systems. The research was carried out by simulating the monthly electricity generation of a 3 kilowatt-peak PV system for a year, as well as the hourly electricity generation for a day in each season of the year using the PVsyst software package. A total of 21 configurations were studied by altering the orientation and inclination angles used to install the PV system. This study confirms that a south-facing PV system inclined at 30° generates the most electricity in a year. However, when compared with electricity consumption patterns of low-, medium- and high-consumption households, it is shown that a south-facing PV system inclined at 40° provides a better income for residents.
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Li, Jiaming, Ying Qiao, Guojing Liu und Zongxiang Lu. „Capacity Configuration of Battery Energy Storage System for Photovoltaic Generation System Considering the High Chargerate“. E3S Web of Conferences 182 (2020): 03003. http://dx.doi.org/10.1051/e3sconf/202018203003.
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Battery energy storage system (BESS) is one of the important solutions to improve the accommodation of large-scale grid connected photovoltaic (PV) generation and increase its operation economy. However, the strong intra-day volatility and severe curtailment of PV power sets a high demand of BESS charge-rate that is a key factor in operation models but ignored in current planning researches. This paper proposes a BESS capacity configuration model for PV generation systems which takes BESS’s ability to (dis)charge exceeds its rated power into account. The best charge-rate and power & energy capacity of BESS are optimized by particle swarm optimization (PSO) algorithm. Through an analysis of the annual output statistics of PV power station in the northwest of China, the results show that when considering the high charge-rate of BESS, the optimal BESS capacity configuration rises and comprehensive income of the PV-BESS system will increase.
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Dai, Yan Jie, Chun Yan Sun, Xiao Yong Wang und Wei Hua Yang. „Research on China's First Residential Grid-Connected Photovoltaic System“. Applied Mechanics and Materials 392 (September 2013): 563–67. http://dx.doi.org/10.4028/www.scientific.net/amm.392.563.
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Along with the continuous expansion of photovoltaic (PV) power generation, different capacity of grid connected PV system is gradually increased. China's first residential grid-connected PV system has interconnected successfully in QingDao and operated normally. This document analyzed electrical connected diagram of grid-connected PV system. Using power quality analyzer, the online power quality is monitored and analyzed. When PV power generation is low efficiency of operating state, harmonic current is over distortion limits. Monitoring data was simulated through electrical power standard source. To ensure power metering accuracy under harmonic, the watt-second method is proposed. Testing results show that smart electrical meter can meter accurately within 20 times harmonics.
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Dufo-López, Rodolfo, Juan M. Lujano-Rojas, José L. Bernal-Agustín, Jesús S. Artal-Sevil und Ángel A. Bayod-Rújula. „Energy arbitrage in PV-PHS systems“. Renewable Energy and Power Quality Journal 21, Nr. 1 (Juli 2023): 7–12. http://dx.doi.org/10.24084/repqj21.206.
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In this paper, we use MHOGA software for the evaluation of adding pumped hydro storage (PHS) for energy arbitrage in utility-scale PV generating systems. PHS is used for electricity price arbitrage, pumping water from the lower reservoir to the upper reservoir with the PV generation during hours of low electricity price and generating electricity by means of the stored water with the turbine during hours of high price (during these hours the PV generator also injects its production to the grid). The control strategy creates setpoints for the use of the pump and the turbine, trying to obtain the maximum benefits from the electricity sold to the grid, maximizing the net present value (NPV). An example of application is shown, obtaining conclusions about the economical viability of the PV-PHS system compared to the PV-only system: in the case studied in this work, it is not worth to add PHS to the PV system.
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Ananthu, Durga Prasad, Neelshetty K. und M. Venkateshkumar. „Artificial intelligent controller-based energy management system for grid integration of PV and energy storage devices“. Indonesian Journal of Electrical Engineering and Computer Science 26, Nr. 2 (01.05.2022): 617. http://dx.doi.org/10.11591/ijeecs.v26.i2.pp617-628.
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In the modern world, photovoltaic (PV) energy generation is becoming more prevalent and cost-effective. To address climate change, many countries have prioritised photovoltaics and made significant investments in energy generation. Because of its non-linear nature, solar energy generation is extremely difficult. This is completely dependent on the solar radiation and the outside temperature. The maximum power generation of a PV system in non-linear weather circumstances and the grid integration of PV with power management are discussed in this article. Artificial intelligence (AI) is vital for improving the energy output of PV systems across a wide range of environmental conditions because traditional controllers do not aid a solar system in producing the maximum energy. The grid integration of PV and EMS (energy management systems) was covered in the later part of this article. In this paper, artificial intelligence is used to provide customers with continuous power through a battery system, which plays a critical role in energy management. Furthermore, the suggested model was simulated in Matlab and its performance was evaluated under various operational scenarios. To demonstrate the effectiveness of the proposed system, the results are compared to IEEE 519.
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Khatib, Tamer, und Lama Sabri. „Grid Impact Assessment of Centralized and Decentralized Photovoltaic-Based Distribution Generation: A Case Study of Power Distribution Network with High Renewable Energy Penetration“. Mathematical Problems in Engineering 2021 (06.07.2021): 1–16. http://dx.doi.org/10.1155/2021/5430089.
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This paper presents a grid impact assessment of a 5 MWp photovoltaic-based distribution unit on a 33 kV/23 MVA power distribution network with high penetration of renewable energy generation. The adapted network has an average load demand of 23 MVA, with a 3 MWp centralized PV system, and a number of decentralized PV systems of a capacity of 2 MWp. A grid impact assessment is done to an additional 5 MWp of PV generation as a centralized system as well as a number of decentralized systems. Power flow analysis is conducted to the grid considering different generation loading scenarios in order to study grid performance including active and reactive power flow, voltage profiles, distribution power transformers loading, transmission lines ampacity levels, and active and reactive power losses. On the other hand, the distribution of the decentralized systems is done optimally considering power distribution transformer loading and available area using the geographical information system. Finally, an economic analysis is done for both cases. Results showed that grid performance is better considering decentralized PV systems, whereas the active power losses are reduced by 13.43% and the reactive power losses are reduced by 14.48%. Moreover, the voltage of buses improved as compared to the centralized system. However, the decentralized PV systems were found to affect the power quality negatively more than the centralized system. As for the economic analysis, the decentralized PV system option is found slightly less profitable than the centralized system, whereas the simple payback period is 9 and 7 years, respectively. However, decentralized PV systems are recommended considering the technical implications of the centralized PV system.
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Prastio, Rizki Putra, Muhammad Aldo Setiawan, Rodik Wahyu Indrawan und Herlambang Setiadi. „Small Signal Stability Analysis of Two Stage PV Generation“. Journal of Advanced Technology and Multidiscipline 1, Nr. 2 (23.11.2022): 55–58. http://dx.doi.org/10.20473/jatm.v1i2.40339.
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Integration of photovoltaic (PV) based power plant have been increased significantly over the years. The integration of this devices is ranging on the small-scale capacity such as in distribution system and large-scale capacity such as in transmission system. Although, PV generation could provide sustainable and clean energy to the grid, they could also bring new challenge on the system stability. One of the stabilities of power system that can be affected by integration of this devices is small signal stability. Hence, it is important to capture the dynamic model of PV generation. This paper is on investigation of dynamic model of PV generation for small signal stability analysis. The simulation is carried out in MATLAB/SIMULINK environment. From the simulation results, it is found that by capturing the dynamic model of PV generation, the modes of the PV generation can be captured.