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1
Yang, Shu Ying, Li Hong Wu, and Zhao Xia Liu. "Research on Photovoltaic Grid-Connected Generation System." Advanced Materials Research 383-390 (November 2011): 4084–89. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.4084.
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This dissertation researches on photovoltaic grid-connected generation system. Photovoltaic grid-connected generation system has two core parts which are maximum power tracking control(MPPT) of photovoltaic cells and the control of the grid-connected inverter. Firstly,this paper introduces the operational principle and performance characteristic of photovoltaic cells,and describes the equivalent circuit and mathematical model. Secondly,this paper introduces several traditional MPPT control algorithms. Based on the maximum power of the fast track process and stability, an improved intermittent scan method is designed to implement the maximum power output in the photovoltaic grid-connection generation system and improve system performance and maximum power point tracking speed. Finally, this dissertation analyses the targets of grid-connected inverter control and studies the control strategies, and then designs mathematical model of control system in photovoltaic grid-connected voltage/current inverter based on Sinusoidal Pulse Width Modulation (SPWM).
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JI, Cui, Siming HUA, Bingbing ZOU, et al. "Monitoring and Analysis of Power Quality in Photovoltaic Power Generation System." E3S Web of Conferences 64 (2018): 06008. http://dx.doi.org/10.1051/e3sconf/20186406008.
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Solar photovoltaic (PV) has been developed rapidly due to its clean and green renewable characteristics. The connection of photovoltaic power generation to the traditional grid system is bound to bring power quality problems. Based on above, this paper introduces the power quality testing method of photovoltaic grid-connected power grid in detail. And then takes the Shanghai Qingpu Nanrong distributed photovoltaic power generation for example, which is the largest single roof photovoltaic power station in Shanghai by far, to use the method to test its power quality. The power quality index include harmonic, voltage imbalance, and frequency deviation. The test and analysis provide a reference for the monitoring and analysis of power quality of photovoltaic grid-connected power grid.
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Tan, Zhiguang, Ning Wu, Yi Zheng, and Weidong Chen. "Study on the influence of grid connected capacity difference of photovoltaic power generation on power grid performance." Journal of Physics: Conference Series 2310, no. 1 (2022): 012003. http://dx.doi.org/10.1088/1742-6596/2310/1/012003.
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Abstract Due to the integration of photovoltaic power generation system, the structure of traditional distribution network will change, and then the grid system after grid connection is in an abnormal working state. If relevant measures are not taken, the operation quality of grid cannot be guaranteed. Therefore, based on the working principle of photovoltaic cells, this paper studies its equivalent model and output characteristics, builds a single-stage three-phase photovoltaic grid connected system on PSCAD platform, verifies the correctness of power control strategy, analyses the impact of photovoltaic grid connection on distribution network loss and voltage, establishes a 33 node model for example analysis, and simulates the grid connection of photovoltaic power generation system under different capacities and locations for many times, the calculation example of determining the location and capacity of photovoltaic grid connected power generation system is analysed, and a multi-objective mathematical model is proposed based on DG cost and active power loss. The installation quantity, capacity and location of DG are deeply studied, and the optimization function is carried out based on genetic algorithm, so as to realize the minimum impact condition of photovoltaic grid connected power generation on power quality of distribution network, and then realize the optimal configuration of photovoltaic power generation system.
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Xie, Hong Fu, Ji Zhang, Ling Yi Zhang, and Yu Wang. "The Research and First Application on Grid-Connected Photovoltaic System in Substation of AnHui." Advanced Materials Research 347-353 (October 2011): 1785–90. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1785.
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The distributed power generation is an energy development way which can most manifest the multiple advantages such as the energy saving, emission reduction, safety and flexible trait. As a kind of distributed power generation technology of renewable energy, photovoltaic power generation has already transited from supplement energy to alternative energy. Although solar photovoltaic power generation industry develops very quickly in China, actual application cases of substation photovoltaic grid-connected power generation system are few. In this paper, the research of photovoltaic grid-connected power generation system is used in Zhuishan substation in Bengbu Anhui province. The system is the first set of substation photovoltaic-connected grid power generation system in Anhui province. It has being operated for three years safety and steady. The whole application of the system is advanced and groundbreaking in the domestic.
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Zhang, Zhixia, and Zhilei Wang. "Study on Simulation Design of Typical Photovoltaic Grid-connected System for New Rural Power Grid." Journal of Physics: Conference Series 2976, no. 1 (2025): 012002. https://doi.org/10.1088/1742-6596/2976/1/012002.
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Abstract Along with the increasing speed of science and technology, the requirement for electric power development is also higher. We advocate both the rapid development of golden hills and silver mountains, and also the environmental protection and sustainable development of green rivers and green mountains. Therefore, the research and development and promotion of clean energy such as photovoltaic power generation are getting more and more popular. Due to the small capacity of the distribution network in rural areas, small load fluctuation and scattered characteristics, it is suitable to use photovoltaic power generation. The simulation experiment of different voltage levels connected to the grid is studied. The former stage uses the boost circuit controlled by Maximum Power Point Tracking (MPPT), and the latter stage uses the phase-locked loop to control the grid-connected voltage and current. The grid-connected 380V system adopts disturbance observation method for maximum power tracking, and the grid-connected 10kV and 35kV system adopts conductance increment method for maximum power tracking. In the design process, the MATLAB SIMULINK module is used to build a grid-connected model of photovoltaic power generation, to simulate the output power of the inverter. This design analyzes the overall structure of the grid-connected system of photovoltaic power generation, analyzes the process of distributed photovoltaic power generation into the rural distribution network, and provides a basis for the future design of rural photovoltaic power grid connection.
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Yuan, Wenzhao, Wengfeng Wang, and Jinsong Liu. "Application analysis based on solar grid-connected photovoltaic power generation and intermittent energy storage system." E3S Web of Conferences 520 (2024): 03004. http://dx.doi.org/10.1051/e3sconf/202452003004.
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Solar photovoltaic power generation as a building electrical professional in the energy use of important technical means, through the realisation of photovoltaic conversion, can be a large amount of light energy transmission to the building application, once the electrical energy surplus is too much, but also can be transmitted to the power grid use. Based on this, the article takes the solar photovoltaic power generation system as the basis, comprehensively analyses the operation principle and basic characteristics of solar photovoltaic power generation, summarizes the main influencing factors of grid-connected solar photovoltaic power generation, as well as the impact of grid-connected solar photovoltaic power generation on the grid, and researches on applying automation technology to solar photovoltaic power generation, such as photovoltaic buildings, DC inverters, reactive power compensation, etc., so as to comprehensively improve the grid-connected solar photovoltaic power generation efficiency and provide a constant source of energy for buildings. Solar thermal power generation technology is another kind of solar power generation technology besides photovoltaic power generation. It is a renewable energy generation method that integrates solar thermal conversion power generation, large-scale heat storage and the characteristics of power grid synchronmachine. According to the influence of different intermittent heat load fluctuation characteristics on the design of solar heat collection and heat storage system, the design method of heat collection and heat storage of intermittent solar heating system is established. The operation characteristics of solar energy system in three typical intermittent heating modes are compared and analyzed. It provides the design method and operation optimization strategy for the efficient utilization of solar heating system.
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Luo, Yun, and WenLing Lu. "Power output control method of small power photovoltaic grid connected power generation under complex illumination." Journal of Physics: Conference Series 2195, no. 1 (2022): 012052. http://dx.doi.org/10.1088/1742-6596/2195/1/012052.
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Abstract Due to the irregular change of lighting conditions, there is a large error in the control of photovoltaic grid connected power output. Therefore, this paper proposes proposes a power output control method for low-power photovoltaic grid-connected power generation considering complex illumination. Based on the analysis of the basic characteristics of photovoltaic grid connected power generation, the output characteristics of photovoltaic array under complex lighting conditions are studied. Combined with its variation characteristics, based on fuzzy control strategy, the output of photovoltaic grid connected energy storage system is adjusted by filter control with variable time constant, and economic operation and stable operation are taken as constraints. The test results show that the design method has a high degree of fit between the control of photovoltaic grid connected power output and the actual results, and the error is within a reasonable range, which is obviously due to the two groups of comparison methods.
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Chen, Yongxin, Zhichang Liu, Zengli Yang, et al. "Protection adaptability analysis method for photovoltaic grid-connected generating system." Journal of Physics: Conference Series 2728, no. 1 (2024): 012040. http://dx.doi.org/10.1088/1742-6596/2728/1/012040.
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Abstract Inverter power sources such as photovoltaic inverters and SVG have unique fault characteristics compared to traditional synchronous motors due to their unique power generation methods, circuit topology, and low-voltage traversal control strategies. The power grid faces various adverse effects due to the ongoing expansion of photovoltaic power station (PV power station) capacity. How to comprehensively analyze the impact of photovoltaic power stations above 1000 MW on power grid relay protection has become a problem. Therefore, a protection adaptability analysis method for photovoltaic grid-connected generating systems is proposed, which is suitable for engineering analysis before the connection of large-capacity PV power stations to ensure the safety of the power system. And it is found that current differential protection exhibits better adaptability than distance protection.
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Zhu, Shaofei, and Chao Hu. "Design of A Grid-connected Control System for Distributed Photovoltaic Power Generation Based on PLC." Journal of Physics: Conference Series 2399, no. 1 (2022): 012024. http://dx.doi.org/10.1088/1742-6596/2399/1/012024.
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Abstract Distributed photovoltaics interfere with continuous power generation after grid connection. In the face of the failure of a single module, the current grid-connected control system needs to readjust system parameters to flexibly adapt to equipment operating conditions. Therefore, this paper is researching a photovoltaic power generation grid-connected control system based on PLC. In the hardware part, PLC is used to complete power generation control, monitoring MCU, data acquisition, control, and other modules. In the software part, the grid-connected state is optimized and controlled according to the distributed photovoltaic output power and the remaining energy storage capacity. The PLC is the execution center, which will control the on-off state of the equipment switch after the data operation. The experimental results show that the designed system can optimally control the power generation and energy storage units according to the power change, reduce the cost of electricity consumption through the adjustment of charge and discharge, reduce the IO usage rate, and improve the concurrent response ability of users. The design system not only guarantees the quality and efficiency of photovoltaic grid connection but also realizes rapid networking and independent tracking of power points to meet the requirements of flexible communication.
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Babu, Bandla Pavan, V. Indragandhi, R. RajaSingh, and Ramani Kannan. "Design Approach of Grid Coupled Solar Inverter." MATEC Web of Conferences 225 (2018): 06001. http://dx.doi.org/10.1051/matecconf/201822506001.
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In novel times, more demands are gained by grid connected solar inverters along with the upgrading of the solar energy generation. In grid connected solar power generation, if there is increase in placing more number of solar inverters it may result in effecting the power quality issues. Solar Grid Tied Inverter system is a electrical power generating system that is coupled to the functioning power grid. This power generating system unit consists of elements like Photovoltaic array, DC to DC converter, DC to AC converter, single phase/three phase converter, and AC Source. The inverter converts DC power generated by the array of photovoltaic cells into AC power and this generated AC power is fed to the connected AC loads. If the amount power generation is exceeding the power demanded, excess AC power is supplied to the grid. With this novel approach we can minimize the use of the AC power from the power grid and also even make a generation to the power grid and this is measured with help of net metering. In this paper designing of 281.6Kw grid tied solar power generation and technical specifications required for them are proposed.
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Zhang, Xue Li, Qi Hui Liu, Bei Li, and Hui Meng Ma. "Analysis of Output Characteristics of Photovoltaic System." Advanced Materials Research 512-515 (May 2012): 17–22. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.17.
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The output of photovoltaic generation system is influenced by the factors such as solar radiation, temperature and so on. So the change of photovoltaic generation power is a non-stationary random process that will impact on the grid. In order to promote large-scale photovoltaic generation connected to the grid, we need to configure energy storage devices for photovoltaic power station and in order to coordinate the allocation of photovoltaic system with energy storage system, we requires a thorough understanding of output characteristics of the photovoltaic system. This paper firstly analyzes the influence brought by the large-scale photovoltaic generation system connected to the grid and then introduces the effect factors of photovoltaic output. Based on the history data of the 100 kWp photovoltaic power station and the statistical method, the paper qualitatively and quantitatively analyzes the photovoltaic output performance; finally puts forward the PV output power evaluation index. The conclusions of this study will provide powerful data references for follow-up studies and have practical value.
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Farghally, Hanaa M., Emad A. Sweelem, Mohamed I. Abu El-Sebah, and Fathy A. Syam. "Agricultural Grid Connected Photovoltaic System Design and Simulation in Egypt by using PVSYST Software." WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS 21 (December 31, 2022): 306–15. http://dx.doi.org/10.37394/23201.2022.21.33.
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Agricultural Photovoltaic Systems are a key technology to achieve sustainable development goals by reducing competition between land for food and electricity. In addition, Agricultural Photovoltaic Systems are at the heart of the link between power generation, crop production and irrigation water conservation. The main ecophysiological constraint on crop production under photovoltaics is the reduction of light. It is difficult to recommend shade tolerance for some plant varieties due to insufficient information on shading conditions for most plants. The use of shading panels (photovoltaic panels) requires more crop-specific research to determine the optimal percentage of panels and their placement that will not reduce agricultural yields. Crop yield variation versus field shading and availability to maximize the system require extensive research. This study aims to develop a standard procedure for designing an agricultural grid-connected photovoltaic power generation system for solar power generation in an agricultural area in Bahteem, Egypt. The technical and annual performance of the grid-connected PV system was simulated using PV Syst software. The paper started with a pre-feasibility study of a grid-connected photovoltaic system using PV Syst. Software with an extensive database of meteorological data, including global daily horizontal solar irradiance, and a database of various renewable energy system components from different manufacturers. In this work, a comprehensive literature review of agricultural solar photovoltaic systems is conducted, with a particular focus on grid-connected systems, followed by a design procedure for grid-connected solar photovoltaic systems. The planned photovoltaic system will generate a total of 400 KWp of electricity. This generated electricity can drive down electricity prices by exporting excess electricity to the national grid. In addition, solar power systems are fuel-efficient and have a low environmental impact.
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Farghally, Hanaa M., Emad A. Sweelem, Mohamed I. Abu El-sebah, and Fathy A. Syam. "Agricultural Grid Connected Photovoltaic System Design and Simulation in Egypt by using PVSYST Software." International Journal of Applied Sciences & Development 2 (April 10, 2023): 12–20. http://dx.doi.org/10.37394/232029.2023.2.2.
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Agricultural Photovoltaic Systems are a key technology to achieve sustainable development goals by reducing competition between land for food and electricity. In addition, Agricultural Photovoltaic Systems are at the heart of the link between power generation, crop production and irrigation water conservation. The main ecophysiological constraint on crop production under photovoltaics is the reduction of light. It is difficult to recommend shade tolerance for some plant varieties due to insufficient information on shading conditions for most plants. The use of shading panels (photovoltaic panels) requires more crop-specific research to determine the optimal percentage of panels and their placement that will not reduce agricultural yields. Crop yield variation versus field shading and availability to maximize the system require extensive research. This study aims to develop a standard procedure for designing an agricultural grid-connected photovoltaic power generation system for solar power generation in an agricultural area in Bahteem, Egypt. The technical and annual performance of the grid-connected PV system was simulated using PV Syst software. The paper started with a pre-feasibility study of a grid-connected photovoltaic system using PV Syst. Software with an extensive database of meteorological data, including global daily horizontal solar irradiance, and a database of various renewable energy system components from different manufacturers. In this work, a comprehensive literature review of agricultural solar photovoltaic systems is conducted, with a particular focus on grid-connected systems, followed by a design procedure for grid-connected solar photovoltaic systems. The planned photovoltaic system will generate a total of 400 KWp of electricity. This generated electricity can drive down electricity prices by exporting excess electricity to the national grid. In addition, solar power systems are fuel-efficient and have a low environmental impact.
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Yang, Yong, Dong Tao Wang, Qing Mei Yao, and Wen Zhen Cai. "Matpower Based Power Flow Calculation with Grid-Connected Photovoltaic." Applied Mechanics and Materials 713-715 (January 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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Yan, Yu Ting, Yang Yang, Jia Quan Yang, and Wen Bin Zhang. "Modeling and Simulation of MPPT Algorithm for PV Grid-Connected System." Advanced Materials Research 945-949 (June 2014): 2880–84. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.2880.
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This paper presents an equivalent circuit model of photovoltaic cells, and then discusses the photovoltaic (PV) grid power generation system in the maximum power point tracking (MPPT) control principle of the boost circuit. The MATLAB/Simulink software was used to model and simulate MPPT verification of the system. The simulation results showed the effectiveness of the control Strategy. As a conlusion, potential solution to MPPT The BOOST circuit adopts the MPPT control in photovoltaic power generation system, not only can improve the efficiency of photovoltaic cells, and thus improve the efficiency of the photovoltaic power generation systems.
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Dai, Yan Jie, Chun Yan Sun, Xiao Yong Wang, and 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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Zhu, Enguo, Yan Liu, Guoquan Zheng, Congcong Li, and Zhen Jing. "Construction of a photovoltaic low-voltage grid connected power regulation system based on partition control." Journal of Physics: Conference Series 2846, no. 1 (2024): 012025. http://dx.doi.org/10.1088/1742-6596/2846/1/012025.
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Abstract Photovoltaic power generation is a green and renewable power generation mode and has been widely used. However, the power fluctuation of photovoltaic power generation has a significant impact on the power grid, which is very important. Based on the concept of regional control, this paper studies the photovoltaic low-voltage grid-connected power regulation system. The photovoltaic power generation system is divided into multiple regions, and each region is provided with an independent control unit and regulation strategy under the control of multiple control areas. The regional factors are combined, such as light intensity and power voltage. In the case of the city, the impact of the area on the whole is dynamically adjusted to achieve the overall balance of power and the stability of the system. The experimental results show that the photovoltaic low-voltage grid-connected power regulation system constructed by regional control performs well and has a high degree of stability. According to the change in light intensity and load demand, the system can achieve accurate control and distribution of photovoltaic power generation.
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Jiang, Zhe, and Zhong Dong Yin. "Application of Super-Capacitor in Grid-Connected Photovoltaic Power Generation System." Applied Mechanics and Materials 291-294 (February 2013): 43–46. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.43.
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The impact of grid-connected photovoltaic power on power quality and reliability of power supply has gained more attention, with the continuous improvement of its generation capacity. This paper describes the power conditioning system of grid-connected photovoltaic power plants based on super-capacitor energy storage, which acts as the energy storage element to stabilize fluctuations in output active power of photovoltaic power generation system. Based on the configuration and principle of the power control system, a power and current double closed loop feedback hysteresis current control strategy is proposed in details, which controls the super capacitor energy storage system to absorb and complement the active power output fluctuations of the photovoltaic power generation system. The effectiveness and good operating performance of the device and control strategy are validated by simulation with PSCAD/ EMTDC.
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Chen, Song Fang, Fan Tao Lin, Sha Zhao, Jing Fen Bai, and Rui Ming Tong. "Analysis of the Impact Caused by Residential Users Distributed Photovoltaic Grid-Connected on Distribution Network." Advanced Materials Research 834-836 (October 2013): 1110–13. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.1110.
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With more and more wide application of distributed power generation system, it is necessary to explore its impact on the power grid. The first residential user of distributed photovoltaic power generation system in China has recently connected to the power grid. A series of experiments were carried out by State grid metering center to detect status of the residential users system. The testing method of distributed photovoltaic power generation system and the results of field test are briefly introduced in this paper. Through the analysis of the test results, the characteristics of photovoltaic power generation system are discussed, in order to carry out further research of measurement technology.
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B Mohan Rao. "Power Flow Analysis Using Fuzzy for Single Phase Transformer Less PV System Connected with a Nine-Level Converter." Journal of Electrical Systems 20, no. 7s (2024): 1277–89. http://dx.doi.org/10.52783/jes.3698.
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Power electronics technology advancements and growing environmental concerns worldwide have made photovoltaic (PV) systems more visible in distributed generation systems. Photovoltaics, or solar PV, is an important component of solar energy for generating electricity. Grid-connected inverters must be able to regulate the amount of power they inject into the grid, track maximum power points, be highly efficient, and inject currents into the grid with minimal harmonic distortion. Two step-down converters were used to construct an inverter without a single-phase transformer. This study investigates two multi-sequence inverter types that use different voltages and are based on single-phase grid-connected photovoltaic (PV) technology. A new nine-level grid-connected transformer-less photovoltaic converter was proposed in this study. MATLAB was used to construct the complicated FFT simulation using fuzzy logic controls. Analyzing efficiency through simulation in order to enhance efficiency. This work aims to replace PI controllers with fuzzy controlled systems so that single-stage operation can be improved with reduced switches in an economic manner. An improvement of 10% over the existing system is achieved by implementing fuzzy computing.
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Hu, Bo, and Zai Lin Piao. "Research on the System Modeling and Control of Single-Phase Pv Flexible Grid-Connected." Advanced Materials Research 960-961 (June 2014): 1367–70. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.1367.
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Photovoltaic systems can not meet the needs in the power grid without the impact, due to its penriodicity, intermittent and randomness, thus the key to solve the core technology of photovoltaic power generation system is important to achieve PV grid-connected. This article explains the two-stage topology system control and modeling of single-phase PV grid-connected: Modeling of DC / DC converter provides basis for maximum power point tracking; DC / AC inverter in grid-connected modeling offer efficient communication basis for grid-connected, it research on the control strategies for DC / DC and DC / AC circuit: that PV grid-connected complete alternating current of unit power factor using the booster circuit and inverter control structure, in order to offer photovoltaic systems flexible grid-connected the foundation.
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Gautami, Sarika, and Rajeev Tiwari. "A Survey on Smart Grid-Connected Photovoltaic Power Systems and Its Issues." IJOSTHE 4, no. 3 (2017): 6. http://dx.doi.org/10.24113/ojssports.v4i3.87.
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Photovoltaic power generation refers to the use of solar photovoltaic cells to the solar radiation can be directly transformed into electricity generation. Distributed photovoltaic power generation, refers to the construction in the vicinity of the user's location, the operation mode to the user side of spontaneous self-occupied mainly, the excess power on the Internet, and in the distribution system to balance the characteristics of the photovoltaic power generation facilities. Distributed photovoltaic power generation follow the principle of local conditions, clean and efficient, decentralized layout, the principle of the nearest use, and make full use of local solar energy resources, alternative and reduce fossil energy consumption. This paper aims to investigate and emphasize the importance of the grid-connected PV system. The investigation was conducted to critically review the literature on expected potential problems associated with issues of PV based grid system. The main purpose of this paper is to discuss the basic understanding of photovoltaic (PV) based distributed generation power system and how these power flows will influence the performance and stability of a power system. Some of the PV grid integration issues such as voltage regulation, voltage sags, harmonic distortion, etc are also discussed and possible solutions are also mentioned.
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Wang, Shihao, Xujing Tang, Xionghang Liu, and Chen Xu. "Research on Low Voltage Ride through Control of a Marine Photovoltaic Grid-Connected System Based on a Super Capacitor." Energies 15, no. 3 (2022): 1020. http://dx.doi.org/10.3390/en15031020.
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With the increase of photovoltaic penetration rate, the fluctuation of photovoltaic power generation affects the reliability of ship power grids. Marine PV grid-connected systems with high penetration rates should generally have a low voltage ride-through capability. In the present paper, a strategy in which super capacitors are applied for energy storage in a marine photovoltaic grid-connected system is proposed, and an inverter adopts independent decoupling control of active and reactive currents to improve the LVRT capability of photovoltaic grid-connected systems. In addition, a comprehensive control strategy is also designed to control the supercapacitor, to regulate the active power through the control method of the voltage outer loop and the current inner loop, in order to maintain the DC bus voltage stability. At the same time, the inverter can increase the reactive power output to support the grid voltage. The advantage of this system is in smoothing the power imbalance in a short time, enhancing the low voltage ride-through capability of the photovoltaic grid-connected system, improving the power quality, and ensuring the safety and stability of the ship’s power grid. MATLAB/Simulink were employed to establish a ro-ro ship super capacitor–marine photovoltaic grid-connected power system model and to carry out simulation experiments by setting the grid voltage drop. The results show that when the grid voltage drops, the inverter adjusts the distribution of active and reactive power. The power factor drops from 1 to 0.77, and the effective value of the voltage drop increases from 150 V to 156 V, which proves that this strategy effectively reduces the depth of the grid voltage drop and improves the low voltage ride-through capability of the photovoltaic grid-connected system.
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Verayiah, Renuga, and Anusiya Iyadurai. "A Comparison Study on Types of PV for Grid Connected Photovoltaic Power." Indonesian Journal of Electrical Engineering and Computer Science 6, no. 2 (2017): 349. http://dx.doi.org/10.11591/ijeecs.v6.i2.pp349-356.
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Grid connected photovoltaic (PV) power systems is today’s breakthrough for renewable energy source in electricity generation Grid-connected photovoltaic (PV) power systems have the advantage of more effective utilization for highest renewable source of electricity generation and tendency to continual growth in the next years. The output performance grid connected photovoltaic (PV) power systems is influenced by the impact of cell temperature or ambient temperature and solar irradiance of the solar module. This paper highlights the effect of output energy of solar module by implementing different types of solar module technology and selecting the highest energy output of the module technology for modelling and simulating the design of grid connected photovoltaic (PV) power system using Matlab/Simulink.
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Zhao, Yushuo. "Exploring the Optimizations for Main Harmonic Filtering for Power Systems." MATEC Web of Conferences 386 (2023): 02005. http://dx.doi.org/10.1051/matecconf/202338602005.
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As the global demand for sustainable and environmentally friendly energy supply continues to increase, photovoltaic technology, as an important form of new energy, has received extensive attention. Photovoltaic grid-connected system is currently the most widely used form of photovoltaic power generation system. It converts direct current into alternating current and injects it into the grid to meet the power demand of users. However, the power grid imposes a series of requirements on grid-connected photovoltaic systems, one of which is the handling of harmonic problems. This article will focus on harmonic generation and how to perform THD (Total Harmonic Distortion) mitigation. As the key equipment of photovoltaic grid-connected system, inverter plays an important role in harmonic filtering. With a brief introduction to inverter-related THD. In this paper, by exploring how to optimize harmonic filtering to improve the performance and reliability of grid-connected photovoltaic systems, it is found that the method of suppressing THD by changing the PMW modulation is simple in calculation, easy to implement, and has high output waveform quality. And the method of suppressing THD by changing the equipment can reduce the harmonic quality.
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Yang, Huixuan, Ming Su, Xin Li, Ruizhao Zhang, and Jinhui Liu. "Distributed Energy Grid-Connected Dense Data Forecasting Technology Based on Federated Learning." Journal of Physics: Conference Series 2592, no. 1 (2023): 012013. http://dx.doi.org/10.1088/1742-6596/2592/1/012013.
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Abstract Photovoltaic power generation system is one of the main clean energy power generation systems at present, which plays an important role in daily production and life. However, the photovoltaic power generation system is easily affected by various factors, and the output power will be unstable in the practical application process, which will affect the power generation efficiency. In this paper, a prediction method of distributed energy grid-connected dense data based on federated learning is constructed. This method can not only realize the short-term prediction of distributed photovoltaic power generation data, but also ensure that the data can be encrypted and modeled, thus solving the “digital island” problem. The model evaluation shows that the method in this paper performs well in short-term photovoltaic power generation prediction, and it can predict the short-term power generation of different photovoltaic power stations with high prediction accuracy. This method is of great significance to improve the management and scheduling ability and energy utilization rate of distributed photovoltaic power generation systems.
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Wang, Chao, Ye Liu, Xu Zhang, and Xiao Tian Yang. "Simulation Design and Benefit Analysis of Grid-Connected Photovoltaic System." Applied Mechanics and Materials 694 (November 2014): 169–72. http://dx.doi.org/10.4028/www.scientific.net/amm.694.169.
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With the development of science and technology, the demand for energy conservation and environmental protection is rising. Grid-connected photovoltaic system industry is developing rapidly in this situation. Taken the typical villa in ChangChun as an example, based on the geographical feature of Jilin province, we design a set of complete grid-connected photovoltaic system power generation system. It contains the configuration of equipment, capacity design, series-parallel design of modules and the design of grid electrical system. In addition, through aiding design by the professional software for photovoltaic system (PVsyst), we calculate the power generation, and we analyze the economic and environmental benefits of this system in 25 years. It will be beneficial to deploy photovoltaic system in the field of building energy efficiency.
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Kumar, Jerry, Nanik Ram Parhyar, Manoj Kumar Panjwani, and Danish Khan. "Design and performance analysis of PV grid-tied system with energy storage system." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 2 (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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Jerry, Kumar, Ram Parhyar Nanik, Kumar Panjwani Manoj, and Khan Danish. "Design and performance analysis of PV grid-tied system with energy storage system." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 2 (2021): 1077–85. https://doi.org/10.11591/ijece.v11i2.pp1077-1085.
Full textAbstract:
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 realtime 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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Qian, Huifa. "The grid simulation device for photovoltaic power generation." Journal of Physics: Conference Series 2584, no. 1 (2023): 012089. http://dx.doi.org/10.1088/1742-6596/2584/1/012089.
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Abstract Solar photovoltaic power generation is the solar radiant energy directly into electricity method, namely the sun radiant energy by solar cells is converted into electrical energy, again through energy storage, control, and transformation, and into people’s dc or ac power that can be used directly. The so-called grid-connected network is simply said to be realized by using the principle of simultaneous operation of voltage, phase, phase sequence, and frequency. The simulation device of its inverter grid-connected is designed, the scheme of simulating grid-connected is given, the drive control system and filter system are designed, and the implementation scheme of the drive control system is introduced in detail. The design and parameter selection of the main circuit and the filter system are given in detail. The hardware and software implementation scheme and circuit structure of the system are given based on DSP. The entire system can meet the requirements of microgrid simulation operation.
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Hao, Xu Hao, Wang Fang, and Liang Zhi Cheng. "Application of Improved Droop Control Based on Grid Impedance in Photovoltaic Grid-Connected Power Generation system." E3S Web of Conferences 233 (2021): 01080. http://dx.doi.org/10.1051/e3sconf/202123301080.
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When the power grid impedance mutates, the output power of the grid-connected photovoltaic power generation system controlled by drooping will become very unstable. To solve this problem, an improved droop control algorithm based on network impedance detection is proposed. Taking photovoltaic grid-connected power generation system as the research object, the influence of power grid impedance on traditional droop control is firstly expounded by introducing power grid impedance value into traditional droop control. Then the method of real-time network impedance extraction is introduced. Furthermore, according to the bandwidth and phase angle constraints of the equivalent output impedance phase frequency characteristics of the photovoltaic grid-connected inverter, the controller parameters are updated in real time to achieve the purpose of adaptive network impedance mutation. Finally, the proposed method is tested and verified by real-time simulation in the loop respectively. The results show that the proposed method is correct.
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Lei, Jin Yong, Xu Zhu Dong, and Hong Bin Wu. "Modeling and Simulation of Three Phase Photovoltaic Grid-Connected Generation System." Advanced Materials Research 347-353 (October 2011): 1144–48. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1144.
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According to the principle of photovoltaic(PV) grid-connected generation, the maximum power point tracking (MPPT) and grid-connected control strategy were presented in this paper. Based on the V-I characteristic curve of photovoltaic array, it built the mathematic model of photovoltaic array and the MPPT algorithm. Through adopting the double-loop feedback control strategy, it achieved the unit power factor control. Lastly, with the example system, it implemented the simulations analysis including the sunlight changing and the temperature changing. The simulation results show that the proposed models and the control strategy are correct.
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Yang, Yong Biao, Li Huang, and Lu Chen. "Research on Detection Technology of Distributed Grid-Connected Photovoltaic Power Generation." Applied Mechanics and Materials 672-674 (October 2014): 117–22. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.117.
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The response, control and fault characteristics of the typical distributed grid-connected photovoltaic generation are described in this paper.And the whole experimental testing platform containing type testing platform, dynamic simulation testing platform and moving experimental process is structured, which describes composition and function of each testing platform. Finally the performance index test of distributed photovoltaic power generation system relying on Shanghai Electric Power Research Institute is carried out. And the experiment results reflect the performance of distributed grid-connected photovoltaic power generation comprehensively.
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Bai, Xue Feng, Shi Qiu, and Pei Li. "Photovoltaic Grid-Connected Generation Gnalog Device Gesign." Applied Mechanics and Materials 577 (July 2014): 494–97. http://dx.doi.org/10.4028/www.scientific.net/amm.577.494.
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With the reduction of non-renewable energy resources, energy conservation and development of new energy has become an important strategic plan around the world. Photovoltaic technology is also developing rapidly with more and more applications of solar energy. The project designed a set of solar photovoltaic grid-connected power generation analog devices. In this paper, the maximum power point tracking, DC-AC inverter technology, SPWM control technology related to single-phase grid-connected PV system have been studied, a comprehensive theoretical has been analyzed and to develop the relevant control scheme and design a set of simulator based on MSP430F169 microcontroller. The experimental results have met the target and achieved the desired effect.
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Xie, Wei. "Study on reactive power compensation for a grid connected photovoltaic power generation system." Journal of Physics: Conference Series 2835, no. 1 (2024): 012021. http://dx.doi.org/10.1088/1742-6596/2835/1/012021.
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Abstract The photovoltaic (PV) industry is developing rapidly, and electricity from decentralized or grid-connected systems is becoming increasingly important. Grid-connected PV systems with active and reactive power compensation can compensate for voltage fluctuation and enhance power system stability. The paper proposes a two-stage, three-phase PV system with reactive power compensation based on the structural properties of conventional PV grid-connected systems. The system achieves maximum power point tracking through real-time detection of PV current and voltage output, load current, and grid voltage and provides active electricity to the grid. It can provide reactive energy required by the grid to compensate for local load reactive current, effectively suppress dynamic voltage fluctuations, improve the electric power quality, and reduce investment outlay. Simulation results are carried out to validate the rationality of the design.
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Yu, Fei, Hong Mi Guo, and Yan He Chu. "Design of Photovoltaic Generation Grid-Connected Inverter Based on DSP." Advanced Materials Research 383-390 (November 2011): 3443–48. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.3443.
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According to characteristics of solar photovoltaic generation system, this paper presents a design of a single-phase photovoltaic grid-connected inverter about 1KW based on the digital signal processor TMS320F2812. This paper designs the algorithm of MPPT (Maximum Power Point tracking) and the algorithm of phase tracking according to its characteristics. The experiment is successful, and the output voltage wave of grid-connected inverter has the same frequency and phase with the grid voltage. The power factor of grid-connected inverter has reached to 0.99.
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Anjali and Sharma Gourav. "A Review on Grid Connected PV System." International Journal of Trend in Scientific Research and Development 1, no. 4 (2017): 558–63. https://doi.org/10.31142/ijtsrd2195.
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The concept of injecting photovoltaic power into the utility grid has earned widespread acceptance in these days of renewable energy generation and distribution. Grid connected inverters have evolved significantly with high diversity. Efficiency, size, weight, reliability etc. have all improved significantly with the development of modern and innovative inverter configurations and these factors have influenced the cost of producing inverters. This paper presents a literature review of the recent technological developments and trends in the Grid Connected Photovoltaic Systems GCPVS . In countries with high penetration of Distributed Generation DG resources, GCPVS have been shown to cause unwanted stress on the electrical grid. A review of the existing and future standards that addresses the technical challenges associated with the growing number of GCPVS is presented. Maximum Power Point Tracking MPPT , Solar Tracking ST and the use of transform less inverters can all lead to high efficiency gains of Photovoltaic PV systems while ensuring minimal interference with the grid. Inverters that support ancillary services like reactive power control, frequency regulation and energy storage are critical for mitigating the challenges caused by the growing adoption of GCPVS. Anjali | Gourav Sharma "A Review on Grid-Connected PV System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017, URL: https://www.ijtsrd.com/papers/ijtsrd2195.pdf
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Ponshankar S. "Simulation Analysis and Performance Analysis of the Modern Converters for Solar Photovoltaic power system." Journal of Information Systems Engineering and Management 10, no. 45s (2025): 34–41. https://doi.org/10.52783/jisem.v10i45s.8706.
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Introduction: Photovoltaic cell is one of the most energizing green energy sources to generate the electricity by implementing it as solar polar plant. Photovoltaic cells is considered as alternate and sustainable energy source as demand to electricity is increasing periodically and clean resource to generation of electricity is very limited. Especially photovoltaic cell changes the energy market dynamically as their output determined on environmental situations. Hence it becomes necessary to conserve the electricity for reliable and safe operation of the existing power system using power electronics converters with maximum power point tracking functions. Photovoltaic sources are considered as clean energy, it is highly significant to evaluate the suitable grid system to various types of the photovoltaic technologies. Due to changing environmental operating conditions such as temperature, irradiance, effects of partial shading and humidity, stability and generation of Photovoltaic cells will be affected largely. Meanwhile, it adversely affects the stability of the grid systems. In this article, detailed performance and simulation analysis of the various types of grid connected system to multiple types of converter to photovoltaic cell towards power generation has been analyzed. Typically Photovoltaic cell generates the DC voltage which is fed into the DC micro grid system as it is modern trend due to loads using DC voltage. Further analysis helps to identify the suitable converter design to photovoltaic cell on basis of significance and challenges of power generation mechanism. Multiple types of converter design are monitored and necessary environmental data was recorded and electricity distributed to various types of grid connected system is also measured. Based on the analysis, the converter topologies to photovoltaic cell such as sepic converter, scott ternary solar multilevel converter, Flyback converter, zeta converter and multiport converter are used to transmit the generated power to various types of micro grid connected system such as off grid system, on grid system, DC connected grid system and hybrid connected grid system under static and dynamic characteristics has analyzed in detail. Power Converter belongs to two main categories such as high step converters as parallel optimizer to PV module level applications and buck boost converter as series optimizer to PV string applications. Among those sepic converter proves to be outperforming on compared with other types of converter system on the simulation using matlab Simulink software.
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Chen, Wei Min, and Cai Hui. "Design on a Micro-Grid System without Inverse-Power-Flow Based on Distributed Generation." Applied Mechanics and Materials 321-324 (June 2013): 1342–46. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.1342.
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Recent years, traditional radiate passive power distribution will become an active power with many medium or small power sources and loads, when distributed generation by new energy (such as wind power or photovoltaic power) are connected to power grid more and more. This change of power distribution brings large harm to security of power grid. This paper proposed a micro-grid system without inverse-power-flow based on distributed generation, which center controller and load controller are deployed, and distribution powers, loads and load controllers are partitioned into different domains connected to micro-grid by controllable switch. The function of main units of micro-grid is discussed; as well as the operation strategy of micro grid based on distributed generation is studied. Finally, the experiment results show the feasibility of the proposed micro-grid system.
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G., Sravani*1 &. Dr. G. Saraswathi2. "DESIGN OF FUZZY CONTROLLER FOR GRID CONNECTED PHOTOVOLTAIC POWER GENERATION." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 9 (2017): 397–406. https://doi.org/10.5281/zenodo.892104.
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Multilevel inverter technology has emerged recently as an important alternative in the area of high-power medium-voltage energy control. In this paper, a multilevel inverter topology is developed and applied for injecting the real power of renewable power into the grid to reduce the switching losses, total harmonic distortions and electromagnetic interference caused by switching operation of power electronic devices. The grid connected photovoltaic system consists of a solar cell array, dc-dc boost converter, a multi-level inverter are coupled to the load system. This multi-level inverter consists of two capacitors, a dual-buck converter, a full-bridge inverter and a filter. In photovoltaic grid connected systems, power electronic converters are used to convert the power, which is generated from PV panel and transfer to grid. So, the dc-dc converter, dc-ac inverters and their controllers are playing an important role in grid connected PV systems. The output power of solar cell array is dc power. So, the inverter is necessarily to convert the dc power to ac power and inject that power into grid. In this paper, five-level inverter with dual-buck converter is used. The dual-buck converter converts the dc voltage from PV panel into three level voltages. Further, the three level voltages is converted into five-level with the help of full-bridge inverter. The dc-dc converter and dc-ac inverter are controlled by developing fuzzy logic controller. The performance of the developed renewable power generation system is compared for Proportional-Integral controlled system and Fuzzy logic controlled system. However the Efficiency of using fuzzy controller to the system is increased.
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Wu, Kui Hua, Wei Sun, Jian Wang, Shen Quan Yang, Yi Qun Wang, and Bo Li. "Design of the Three-Phase Photovoltaic Grid-Connected Inverter." Advanced Materials Research 986-987 (July 2014): 1938–41. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1938.
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Photovoltaic grid-connected power generation is the inevitable development trend of solar photovoltaic systems,grid inverter is an essential part of photovoltaic grid-connected power generation. With the developed three phase current type PWM inverter device as the research object, and symmetry rules sampling method is applied to the inverter, through the method combined by the computer simulation and experiment research, the device was verified by simulation and experimental .The results show that: This method could not only effectively reduce the DC side inductance volume of the current-mode PWM inverter , and it could make output AC currents sinusoidal and in phase with grid voltages, but also improve the efficiency of the system, it will be more suitable for photovoltaic grid-connected.
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Wang, Yi Jun, and Lin Llin Sui. "Research on Single Phase Photovoltaic Generation under Grid-Connected Inverter." Applied Mechanics and Materials 143-144 (December 2011): 169–73. http://dx.doi.org/10.4028/www.scientific.net/amm.143-144.169.
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The grid-connected photovoltaic system is a trend of photovoltaic system development. According to the character of solar array,we designed a novel grid-connected photovoltaic inverter with the function of Maximum Power Point Tracking.The inverter consist s of a DC-DC converter and a DC-AC inverter and the two parts are combined by a Dclink. The part of control achieve synchronization sinusoidal current output with the network voltage.
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Cao, Neng, Ya Jun Cao, and Jiao Yu Liu. "Modeling and Analysis of Grid-Connected Inverter for PV Generation." Advanced Materials Research 760-762 (September 2013): 451–56. http://dx.doi.org/10.4028/www.scientific.net/amr.760-762.451.
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In order to improve the efficiency of photovoltaic generation as well as the power quality, grid-connected inverters for PV generation research was carried out for photovoltaic maximum power point tracking. Based on some current studies on the incremental conductance method, an advanced incremental conductance control algorithm was proposed, which can track maximum power point rapidly and accurately. The oscillation phenomenon, which exists near the maximum power point, was improved at a great extent, so to the efficiency of photovoltaic cells generation electricity. The inverter control system has an advantage in its high speed and flexibility by applying advanced control algorithm. And the source harmonic current is remarkably reduced. In addition, the power factor is enhanced and the power quality is improved. Finally, according to the principle of inverter control system and based on the analysis on the mathematical model of photovoltaic inverter, a simulation model of that is established based on MATLAB/SIMULINK.
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Zhang, Zhuo, and Hong Wei Li. "Control Method of Inverter for Large-Scale Grid-Connected Photovoltaic Generation System." Applied Mechanics and Materials 448-453 (October 2013): 2507–10. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.2507.
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A grid-connected inverter control method to analyze dynamic process of large-scale and grid-connected photovoltaic (PV) power station is proposed. The reference values of control variables are composed of maximum power output of the photovoltaic array in the photovoltaic power plant and power factor specified by dispatching. Control strategy of dynamic feedback linearization is adopted. Nonlinear decoupling controller is designed for realizing decoupling control of real-and reactive-power. The cascade PI regulation is proposed to avoid inaccurate parameter estimation which generates the system static error. Simulation is carried out based on the simplified power system with large-scale photovoltaic plant model, the power factor, and solar irradiation, and bus fault are considered for the further research. Its demonstrated that the parameter adjustment of PI controller is simple and convenient, dynamic response of system is transient, and the stability of the inverter control is verified.
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Wen, Yan Hao, Da Hua Li, Jun Fang Li, and Yu Chen Jiang. "Research on Application of Solar Photovoltaic Grid Power System Research." Applied Mechanics and Materials 687-691 (November 2014): 3227–30. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.3227.
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Research on the conditions of solar photovoltaic grid connected power generation, research the form of converting solar energy into electrical energy generating.This paper introduces the solar photovoltaic system components, advantages and disadvantages as well as the current domestic solar photovoltaic power generation application status, prospect the development of the trend in the future, according to the analysis of the present problems. And relying on Tianjin CNOOC oil development group of Yingkou natural gas terminal 330KW solar photovoltaic power generation demonstration projects are introduced. For the photovoltaic CNOOC Yingkou terminal-station problems presents the feasibility scheme and suggestion.
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D.Thaniga and Navin kumar TM. "Modeling and Simulation of a PV Based Grid Connected System for Ship." Journal of Control and Instrumentation Engineering, e-ISSN: 2582-3000 5, no. 3 (2019): 18–26. https://doi.org/10.5281/zenodo.3563429.
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<em>In this paper, a single-phase single-stage H-bridge inverter based photovoltaic (PV) for grid connected system. The single-stage conversion for tracking the maximum power point and interfacing the photovoltaic array to the grid. To improve the efficiency and power quality of the system, tuned parallel resonant network is used for reducing the harmonics at the inverter DC side. By adopting PWM strategy, and a higher quality and lower THD of grid connected current are obtained using Pulse width modulation. This PV system was added to diesel ship. Green ship is consisted of PV generation system, stand alone and grid connected inverter. The aim of the green ship is not only to reduce the fuel consumption but also to support the power grid as a distributed generation in the near future.</em>
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Han, Xian Sui, and Qi Hui Liu. "Modeling and Simulation of Grid-Connected Photovoltaic System Based on PSCAD." Advanced Materials Research 986-987 (July 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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Khan, Shaikhul Arefin, Md Mokarram Hossain Chowdhury, and Uthso Nandy. "Solar-wind-power Hybrid Power Generation System." Journal of Engineering Research and Reports 25, no. 10 (2023): 145–52. http://dx.doi.org/10.9734/jerr/2023/v25i101007.
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In comparison to traditional power generation techniques, renewable energy is reliable as well as efficient, clean, and environmentally friendly. Switching to renewable energy sources is the only way to alleviate the resource shortages that the world is now experiencing, particularly the lack of fuel resources. More and more people are turning to renewable energy sources like solar and wind power. The project's goal is to utilize the programming language MATLAB/Simulink to design a hybrid power producing system that is connected to the grid and uses both solar and wind energy. The geography, solar irradiance, daylight hours, temperature, wind speed, and wind direction were all considered during the model's creation. The grid-connected hybrid model includes photovoltaic cells, a maximum power point tracker (P&O), a boost converter, an inverter, a wind turbine, and a permanent magnet synchronous generator (PMSG). In addition, the hybrid system is what powers the grid. The output is measured under a range of irradiance and temperature conditions. To examine the hybrid model, simulations are done in MATLAB.
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Niu, Shuanbao, Xianbo Ke, Qiang Shen, Chao Huo, Ning Chen, and Hua Li. "Research on Transient Overvoltage Suppression Measures for Photovoltaics Connected to the DC Sending End in the Smart Power System for Industry 4.0." Mathematical Problems in Engineering 2020 (October 14, 2020): 1–13. http://dx.doi.org/10.1155/2020/4585297.
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The development of smart power systems in Industry 4.0 will bring people better quality electrical energy. The photovoltaic power generation system in the smart grid for Industry 4.0 is also the focus of development. The rapid development of photovoltaic power generation systems will bring people cleaner and greener energy. However, it will cause the transient overvoltage phenomenon near the DC sending terminal when the large-scale photovoltaic plant is connected to the power grid, further bringing about a profound impact on the power grid and its security and stability. In this paper, it is proposed that the rise of transient overvoltage at the photovoltaic terminal is caused by three main factors including the reactive power surplus of DC commutation failure, the weak power grid at the sending terminal, and the control characteristics of the photovoltaic plant. Then, the coordinated control strategy of transient overvoltage is proposed, and the overvoltage control strategy of the DC transmission terminal and the photovoltaic power plant control strategy are, respectively, optimized. Finally, the influence parameters of overvoltage are analysed and the corresponding photovoltaic strategy is presented. The optimization results of photovoltaic parameters and the proposed strategies of photovoltaic power generation can effectively restrain the voltage or frequency fluctuation and power oscillation caused by HVDC commutation failure. This study promotes the development of the photovoltaic power generation system in the intelligent power system of industry 4.0.
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Zhou, Xue Song, Jia Rui Wu, and You Jie Ma. "An Overview of Grid-Connected Photovoltaic Power Generating System." Advanced Materials Research 542-543 (June 2012): 15–18. http://dx.doi.org/10.4028/www.scientific.net/amr.542-543.15.
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With the traditional energy exhausting rapidly, the development of new sustainable energy especially solar energy has a significant meaning. The paper mainly introduces some characteristics of photovoltaic (PV) power generation system involving in its development, construction and key technology. Solar cells can supply power energy through absorbing sunlight. As a result, some key technologies such as maximum power point tracking (MPPT), islanding detection and energy conversion are concerned by many investigators. Finally, this review gives some conclusion and prospective of PV power system.