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Journal articles on the topic 'REACTIVE POWER LIMIT'

Author: Grafiati
Published: 11 September 2023
Last updated: 25 July 2025

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1

Pavlović, Jelena, Bojan Radojičić, Lazar Stančić, Jasna Dragosavac, Sava Dobričić, and Žarko Janda. "Algorithm of reactive power dispatching "per generator" realization on TPP Nikola Tesla A." Zbornik radova, Elektrotehnički institut Nikola Tesla 32, no. 32 (2022): 113–23. https://doi.org/10.5937/zeint32-41760.

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The algorithm of reactive power dispatching "per generator" realization is presented in the paper. Dispatching "per generator" and "per grid" are two modes of reactive power dispatching used by coordinated reactive power and voltage regulator (GRRS). Reactive power dispatching "per generator" ensures equal heating of the generators, while dispatching "per grid" ensures maximal reactive power reserve when generated reactive power either increases, or decreases. Reactive power dispatching "per generator" is more complex for realization
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2

Hiskens, I. A., and B. B. Chakrabarti. "Direct calculation of reactive power limit points." Fuel and Energy Abstracts 37, no. 3 (1996): 192. http://dx.doi.org/10.1016/0140-6701(96)88682-6.

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3

Hiskens, I. A., and B. B. Chakrabarti. "Direct calculation of reactive power limit points." International Journal of Electrical Power & Energy Systems 18, no. 2 (1996): 121–29. http://dx.doi.org/10.1016/0142-0615(95)00058-5.

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4

Sundaravazhuthi*, V., Dr A. Alli Rani, and M. Manoj Kumar. "Raise Voltage Stability Limit of a Power System using Reactive Power Compensation Technique." International Journal of Innovative Technology and Exploring Engineering 8, no. 12 (2019): 2931–34. http://dx.doi.org/10.35940/ijitee.k1752.1081219.

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In recent years, voltage stability problems have been increasing since power systems operate close to stability limits. The voltage stability problem of a power system is associated with a rapid voltage drop due to heavy system load and it occurs because of inadequate reactive power support at some critical bus. One of the serious consequences of the voltage stability is a system blackout, and this has received more attention in recent years. Accurate determination of stability limit and amount of reactive power injection to stabilize is important.This paper proposes to determine voltage stabi
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5

Hu, Shu Ju, Ling Ling Wang, and Ya Deng. "Analysis on Power Output Capability and its Power Control Strategy of DFIG Wind Turbine under Unbalanced Grid Voltage." Applied Mechanics and Materials 448-453 (October 2013): 1819–24. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.1819.

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Wind turbines are required by gird codes that active and reactive power should be fed into power grid during gird faults such as voltage sags. Power output capability is important for DFIG wind turbine to provide active and reactive power support. Constraints of stator, rotor maximum current and maximum output voltage of rotor-side converter (RSC) of DFIG are considered to analyze stator power output limit of the DFIG under unbalanced voltage sags, and newton-raphson method is used to solve the power limits, then the power control strategy based on power limit analysis is proposed. Simulation,
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Pavlović, Jelena, Bojan Radojičić, Lazar Stančić, Jasna Dragosavac, Sava Dobričić, and Žarko Janda. "Algorithm of reactive power dispatching "per generator" realization on TPP Nikola Tesla A." Zbornik radova Elektrotehnicki institut Nikola Tesla, no. 32 (2022): 113–23. http://dx.doi.org/10.5937/zeint32-41760.

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The algorithm of reactive power dispatching "per generator" realization is presented in the paper. Dispatching "per generator" and "per grid" are two modes of reactive power dispatching used by coordinated reactive power and voltage regulator (GRRS). Reactive power dispatching "per generator" ensures equal heating of the generators, while dispatching "per grid" ensures maximal reactive power reserve when generated reactive power either increases, or decreases. Reactive power dispatching "per generator" is more complex for realization because the dispatching criterion may have wider generator's
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7

Liu, Guan Qi, Long Shao, and Shou Shu Guan. "The Research of Reactive Power Output of Doubly-Fed Induction Generator when Large-Scale Wind Power Integration." Applied Mechanics and Materials 380-384 (August 2013): 3061–64. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.3061.

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The technology of large-scale wind power connected to grid is a key technology in the application of wind power. However, the large-scale wind power will cause the negative effect on the voltage of grid. So, the regulation of reactive power is necessary, which can stabilize the voltage level of the grid. The doubly-fed induction generators (DFIG) themselves own the ability of providing reactive power. Considering the reactive power demand when the power grid is operating, and then rationally allocating static and dynamic reactive power compensation equipment, the operational efficiency can be
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8

Tamimi, Behnam, Claudio A. Canizares, and Sadegh Vaez-Zadeh. "Effect of Reactive Power Limit Modeling on Maximum System Loading and Active and Reactive Power Markets." IEEE Transactions on Power Systems 25, no. 2 (2010): 1106–16. http://dx.doi.org/10.1109/tpwrs.2009.2036798.

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9

Abdulrahman Mohammed Galadima. "Reactive Power Compensation Using STATCOM and Instantaneous Reactive Power Theory." African Journal of Advances in Science and Technology Research 18, no. 1 (2025): 1–23. https://doi.org/10.62154/ajastr.2025.018.010672.

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Reactive power can have a range of negative impacts on energy generation and consumption in a power system network. These include creating unnecessary increases in generation, leading to the overall decline in grid efficiency and significant resource inefficiencies. Reactive power compensation is, therefore, critical for improved system performance and elevated productivity. This research aims to design and simulate a 3-phase reactive power compensation model using a Static Synchronous Compensator (STATCOM) to improve the system’s power factor and effectively suppress the system harmonics. Thi
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10

Xu, Xue Yong, Pan Zhou, Qi Zhe Huang, Chun Ming Deng, Meng Meng Shi, and Gang Xue. "Optimization of Voltage and Reactive Power in Regional Power Network Based on MCR." Advanced Materials Research 986-987 (July 2014): 394–99. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.394.

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Along with the increasing use of cables in power grid and the increasing ration of distributed power sources’ synchronization, such as small hydropower’s synchronization, increasing the reactive power transmission on the line, make it difficult to achieve the balance of reactive hierarchical partition. Take a certain region’s power grid for actual examples, after the installation of magnetic control reactor (MCR), using immune genetic algorithm (IGA) to coordinate the capacity of magnetic control reactor and the existing reactive power resources, the results show that the magnetic control reac
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11

Lin, Zhiyuan, Fei Tang, Caiyang Yu, et al. "Reactive Power Compensation Strategy of the Electric Vehicle Connected to the Distribution Network in the Limit State Considering Voltage Constraint." Sustainability 15, no. 11 (2023): 8634. http://dx.doi.org/10.3390/su15118634.

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To solve the voltage stability problem of electric vehicles connected to the distribution network in the limit state, a reactive power compensation strategy based on the holomorphic embedding method and electrical distance is proposed. Firstly, the load model of the electric vehicle charging station is constructed, and the limit of the charging power of the electric vehicle connected to a certain bus is obtained. Then, the power flow embedding equation of the power system is constructed by the holomorphic embedding method, and the analytical expression of the voltage rational function is intro
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12

Kataoka, Yoshihiko, and Yukio Shinoda. "Voltage Stability Limit of Electric Power System with Reactive Power Constraints on Generators." IEEJ Transactions on Power and Energy 123, no. 6 (2003): 704–17. http://dx.doi.org/10.1541/ieejpes.123.704.

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13

Kataoka, Y., and Y. Shinoda. "Voltage Stability Limit of Electric Power Systems With Generator Reactive Power Constraints Considered." IEEE Transactions on Power Systems 20, no. 2 (2005): 951–62. http://dx.doi.org/10.1109/tpwrs.2005.846080.

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14

Abdelaziz, Morad Mohamed Abdelmageed. "Effect of Detailed Reactive Power Limit Modeling on Islanded Microgrid Power Flow Analysis." IEEE Transactions on Power Systems 31, no. 2 (2016): 1665–66. http://dx.doi.org/10.1109/tpwrs.2015.2412690.

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15

Zhu, Yingfeng, Xiaosu Xie, Dong Yang, Song Gao, Weichao Zhang, and Xunkui Yuan. "Simulation of reactive power regulation of DFIG." E3S Web of Conferences 233 (2021): 01025. http://dx.doi.org/10.1051/e3sconf/202123301025.

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Doubly fed induction generator (DFIG) wind power generation system is widely used in wind farm all over the world. Reactive power can be generated both in grid-side converter and generator-side converter of DFIG. In this paper, working principle and control method of DFIG are introduced, and the reactive power limit of DFIG is derived, finally reactive power regulation is simulated in Simulink.
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16

Chen, Shuhao, Ting Yuan, and Fei Lin. "Research on Reactive Voltage Control of Distribution Network with Distributed Photovoltaic Sources." Journal of Physics: Conference Series 2310, no. 1 (2022): 012025. http://dx.doi.org/10.1088/1742-6596/2310/1/012025.

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Abstract Aiming at the problem that the voltage of multiple nodes exceeds the limit after the distributed photovoltaic source is connected, a reactive voltage control method of distribution network is proposed. It modeled the distribution network system with distributed photovoltaic sources, determined the maximum photovoltaic output and adjustable amount, and calculated the power flow. The line loss can be obtained from the node voltage and rated power, and the power distribution of each branch of the whole network can be further obtained. This paper analyzed the influence of photovoltaic pow
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17

Yan, Tao, Teng Li, and Zerong Liang. "Research on the Weak-Bus Voltage Support Effect of Energy Storage Type Intelligent Soft Open Point." Energies 17, no. 23 (2024): 5815. http://dx.doi.org/10.3390/en17235815.

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With the integration of a high proportion of distributed generators (DGs), the imbalance between source and load power intensifies, causing the distribution grid to become ‘weak’ during certain periods, which can easily lead to voltage over-limit for the distribution grid. Due to the coupling of active and reactive power in weak power grids for voltage regulation, the effectiveness of single reactive voltage regulation for voltage over-limit is not satisfactory. This paper uses an Energy Storage type Intelligent Soft Open Point (E-SOP) with grid-forming controlled energy storage to simultaneou
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18

Zhang, Song Tao, Gong Bao Wang, and Hui Bo Wang. "Application of Tabu-Genetic Algorithm in Reactive Power Optimization." Advanced Materials Research 1006-1007 (August 2014): 1021–25. http://dx.doi.org/10.4028/www.scientific.net/amr.1006-1007.1021.

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By using tabu search algorithm which has strong local search ability as mutation operator of genetic algorithm, the tabu-genetic algorithm is designed for reactive power optimization in this paper, the strong global search ability of genetic algorithm and strong local search ability of tabu search algorithm is combined, the disadvantage of weak local search ability of genetic algorithm is conquered. Otherwise, the over limit of population is recorded and filtered, to ensure the final individual is under limit and effective. The tabu-genetic algorithm and simple genetic algorithm are used for s
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19

Wang, Xiangdong, Lei Wang, Wenfa Kang, et al. "Distributed Nodal Voltage Regulation Method for Low-Voltage Distribution Networks by Sharing PV System Reactive Power." Energies 16, no. 1 (2022): 357. http://dx.doi.org/10.3390/en16010357.

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With the intensive integration of photovoltaic (PV) sources into the low-voltage distribution networks (LVDN), the nodal voltage limit violations and fluctuation problem cause concerns on the safety operation of a power system. The intermittent, stochastic, and fluctuating characteristics of PV output power leads to the frequent and fast fluctuation of nodal voltages. To address the voltage limit violation and fluctuation problem, this paper proposes a distributed nodal voltage regulation method based on photovoltaic reactive power and on-load tap changer transformers (OLTC). Using the local Q
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20

Sutjipto, Rachmat, Ika Noer Syamsiana, and Widya Pratiwi. "Analisis Pengaruh Pengaturan Sudut Penyalaan Thyristor Pada Tegangan Eksitasi Terhadap Keluaran Daya Reaktif Generator di PT.PJB PLTU Gresik Unit 3." ELPOSYS: Jurnal Sistem Kelistrikan 8, no. 3 (2021): 53–58. http://dx.doi.org/10.33795/elposys.v8i3.77.

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The process of changing mechanical energy into electrical energy is carried out by a synchronous generator using an excitation system that functions to supply a DC source to the generator field winding. In this study, the excitation system used is a static excitation system that uses a transformer and several thyristors connected in a bridge configuration. The excitation system is then implemented on a generator with a capacity of 200 MVA / 15 kV using the MATLAB Simulink R2017b simulation. By using the above circuit, the thyristor ignition angle setting can be adjusted so that it can adjust t
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21

ALBAWINDI, HAMZA M., SALAH A. SULTAN, and HAMZA M. SHELAF. "Voltage Stability Assessment for local Network Scheme using Evolutionary Programming Technique." International Science and Technology Journal 34, no. 2 (2024): 1–18. http://dx.doi.org/10.62341/hshv3076.

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Voltage stability is a crucial aspect in the power system operation and planning. The stressed condition in power system caused by reactive power loading has made the system operating close to its stability limit while reducing the voltage on a particular load bus. Hence some measures should be taken in order to improve the voltage stability condition in the electric power systems. Reactive power planning)RPP) includes the reactive power dispatch, capacitor placement on the load bus to improve local voltage profile. This research paper presents the application of Evolutionary Programming (EP)
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22

Duong, Thanh Long, Minh Quan Duong, Van-Duc Phan, and Thang Trung Nguyen. "Optimal Reactive Power Flow for Large-Scale Power Systems Using an Effective Metaheuristic Algorithm." Journal of Electrical and Computer Engineering 2020 (March 1, 2020): 1–11. http://dx.doi.org/10.1155/2020/6382507.

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In this paper, stochastic fractal search method (SFS) is employed for solving the optimal reactive power flow (ORPF) problem with a target of optimizing total active power losses (TPL), voltage deviation (VD), and voltage stability index (VSI). SFS is an effective metaheuristic algorithm consisting of diffusion process and two update processes. ORPF is a complex problem giving challenges to applied algorithms by taking into account many complex constraints such as operating voltage from generators and loads, active and reactive power generation of generators, limit of capacitors, apparent powe
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23

Anichebe, I. B., and A. O. Ekwue. "Improvement of bus voltage profiles of Nigerian power network in the presence of Static Synchronous Compensator (STATCOM) and Doubly Fed Induction Generator (DFIG)." Nigerian Journal of Technology 39, no. 1 (2020): 228–37. http://dx.doi.org/10.4314/njt.v39i1.26.

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Frequent blackouts and unstable supply of electricity show that the voltage instability problem has been one of the major challenges facing the power system network in Nigeria. This study investigates the voltage stability analysis of the Nigerian power network in the presence of renewable energy sources; FACTS device is used as a voltage controller. A 330kV, 28-bus power system network was studied using the PSS/E software-based Newton-Raphson load-flow technique. The results show that 10 out of the 28 buses had voltages lying below the statutory limit of 0.95 ≤ 1.05 p.u. The application of ST
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24

Bandri, Sepannur, Zuriman Anthony, Rafika Andari, and Fauzan Ismail. "Ancillary Services of a Grid-Connected Inverter with Overcurrent Protection Capability under Voltage Sag." Jurnal Teknik Elektro 15, no. 1 (2023): 16–23. http://dx.doi.org/10.15294/jte.v15i1.43870.

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The Distributed Generator of a Photovoltaic System (DGPVS) is an essential factor for future power plant generation, and it can be created by connecting multiple small power plant generators in a microgrid system. This paper focuses on the overcurrent protection of a three-phase grid-connected inverter (3P-GCI) under voltage sag conditions in sustaining connection loss between the 3P-GCI and the primary grid, which involves voltage instability. The ancillary service shows more advantage in overcurrent protection during voltage sags, which limits the generated current under sag duration. Its se
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Schultis, Daniel-Leon, and Albana Ilo. "Behaviour of Distribution Grids with the Highest PV Share Using the Volt/Var Control Chain Strategy." Energies 12, no. 20 (2019): 3865. http://dx.doi.org/10.3390/en12203865.

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The large-scale integration of rooftop PVs stalls due to the voltage limit violations they provoke, the uncontrolled reactive power flow in the superordinate grids and the information and communications technology (ICT) related challenges that arise in solving the voltage limit violation problem. This paper attempts to solve these issues using the LINK-based holistic architecture, which takes into account the behaviour of the entire power system, including customer plants. It focuses on the analysis of the behaviour of distribution grids with the highest PV share, leading to the determination
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Fu, Hongjun, Shaoxuan Zhu, Ran Sun, et al. "Improving and warning the static stability limit of complex power grid tie-line based on WAMS." Journal of Physics: Conference Series 2584, no. 1 (2023): 012140. http://dx.doi.org/10.1088/1742-6596/2584/1/012140.

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Abstract In order to solve the technical problems of traditional power system classic formulas that are difficult to explain the static stability limit changes of power grid interconnection lines, as well as the difficulties in improving and warning the static stability limit power of interconnection lines, this paper provides a method for improving and warning the static stability limit of power grid interconnection lines. Firstly, based on the electrical quantities measured by the wide-area measurement system (WAMS) of the power grid, the equivalent reactance of the power grid interconnectio
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Bondar, Oleh, Mikola Kostin, Andrei Mukha, Olha Sheikina, and Svitlana Levytska. "Fryze reactive power of trams in effective stochastic recuperation processes." MATEC Web of Conferences 294 (2019): 01006. http://dx.doi.org/10.1051/matecconf/201929401006.

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Urban electric transport system, particularly tram systems, is not a direct current system not only in traction mode but in regenerative modes as both voltage on a collector and regenerative current are stochastic abruptly variable processes. The above- mentioned facts determine availability of Fryze’s reactive power in this system that flows from a railway substation to trams, leads to incidental losses of energy and significantly reduces its quality. So evaluation of power effectiveness of the system in electrical trams operation is impossible without determining the level of reactive power
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28

Xiang, Xiaojing, and Shihong Gao. "Reactive power optimization for power distribution networks using mixed-integer Second-order cone programming." Journal of Physics: Conference Series 2803, no. 1 (2024): 012012. http://dx.doi.org/10.1088/1742-6596/2803/1/012012.

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Abstract The integration of a large number of Distributed Resources (DR) into the power distribution network presents significant challenges to the system’s reactive power and voltage control. This paper comprehensively considers the impacts of network losses, curtailment of renewable energy, and user electricity consumption experiences, and establishes a reactive power optimization model for distribution networks with multiple types of distributed resources. Initially, complex relationships among power flow variables are approximated by linear expressions, transforming the power flow model in
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Schultis, Daniel-Leon, and Albana Ilo. "Effect of Individual Volt/var Control Strategies in LINK-Based Smart Grids with a High Photovoltaic Share." Energies 14, no. 18 (2021): 5641. http://dx.doi.org/10.3390/en14185641.

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The increasing share of distributed energy resources aggravates voltage limit compliance within the electric power system. Nowadays, various inverter-based Volt/var control strategies, such as cosφ(P) and Q(U), for low voltage feeder connected L(U) local control and on-load tap changers in distribution substations are investigated to mitigate the voltage limit violations caused by the extensive integration of rooftop photovoltaics. This study extends the L(U) control strategy to X(U) to also cover the case of a significant load increase, e.g., related to e-mobility. Control ensembles, includin
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30

Li, Gan, Li Jie Ding, and Dan Dan Li. "SVG Graphical Analysis Tool Online Regional Reactive Power Optimization System Development." Advanced Materials Research 986-987 (July 2014): 2073–77. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.2073.

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Online region reactive power optimization is used to reduce power bus voltage operation over limit and reduce net loss for the economy to ensure that the power grid of great significance. SVG graphics file is a standard file format used by our dispatching operation, analysis file and basic information within the file corresponds to reactive power optimization system can guarantee the system reactive power optimization of interactive graphics capability and versatility. In this paper, we design and development of a SVG graphics file parsing tool that can automatically complete the import SVG, s
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Xu, Guanghu, Jian Qiu, Jianxin Zhang, et al. "Coordinated Control of Transient Voltage Support in Doubly Fed Induction Generators." Energies 17, no. 19 (2024): 4763. http://dx.doi.org/10.3390/en17194763.

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The large-scale integration of wind power significantly alters the voltage dynamic characteristics of power systems. Wind turbines have a weak ability to withstand grid disturbances and have difficulty in providing effective reactive power support during transient periods. The sensitivity of wind turbines to the grid voltage significantly increases the probability of large-scale, cascading off-grid events. This paper proposes a coordinated control strategy to enhance the transient reactive power support capability of doubly fed wind farms. The additional stator current demagnetization control
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32

Tao, Zican, Tao Wang, Defu Cai, and Rusi Chen. "Research on Reactive Power Optimization of Synchronous Condensers in HVDC Transmission Based on Reactive Power Conversion Factor." Energies 17, no. 17 (2024): 4294. http://dx.doi.org/10.3390/en17174294.

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With the rapid development of high-voltage direct current (HVDC) transmission systems, the coupling between AC and DC grids is becoming increasingly close. Voltage disturbances in the grid can easily cause commutation failures in the DC system, threatening its safe and stable operation. The new generation of synchronous condensers (SCs) and modified synchronous condenser units are powerful reactive power support devices widely used in large-capacity DC transmission systems. To maximize the voltage support and commutation failure suppression of SCs, this paper proposes improvements in the initi
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Yang, Aimin, Jianfeng Yang, and Ting Li. "Research on the overvoltage suppression strategy of single-phase photovoltaic grid-connected systems based on FCS-MPDPC." Journal of Physics: Conference Series 2591, no. 1 (2023): 012051. http://dx.doi.org/10.1088/1742-6596/2591/1/012051.

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Abstract For the overvoltage problem brought by the access of high-penetration photovoltaic power plants to the low-voltage distribution network, this paper chooses to deal with it by using the reactive power regulation capability of photovoltaic power plant inverters, which reduces the equipment investment in distribution line voltage regulation. Based on the reactive power regulation theory of the inverter, a finite set model predictive direct power control method is proposed by constructing a virtual voltage vector, taking a single-phase cascaded 2H bridge grid-connected inverter as an exam
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34

Tayo, Uthman Badrudeen, Kehinde Ariyo Funso, Olalekan Salau Ayodeji, and Lucky Braide Sepiribo. "Analysis of a new voltage stability pointer for line contingency ranking in a power network." Bulletin of Electrical Engineering and Informatics 11, no. 6 (2022): 3033~3041. https://doi.org/10.11591/eei.v11i6.4266.

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Improper management of reactive power in a power network could lead to voltage instability. This paper presents a well-detailed study on voltage instability due to violation of power equilibrium in a power network and introduces a new voltage stability pointer (NVSP). The proposed NVSP is developed from a reduced 2-bus interconnected network to predict the sensistivity of voltage stability to reactive power variation. The simulation results from MATLAB were evaluated on IEEE 14-bus test system. The contingency ranking was achieved by varying the reactive power on the load buses to its maximum
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Badrudeen, Tayo Uthman, Funso Kehinde Ariyo, Ayodeji Olalekan Salau, and Sepiribo Lucky Braide. "Analysis of a new voltage stability pointer for line contingency ranking in a power network." Bulletin of Electrical Engineering and Informatics 11, no. 6 (2022): 3033–41. http://dx.doi.org/10.11591/eei.v11i6.4266.

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Improper management of reactive power in a power network could lead to voltage instability. This paper presents a well-detailed study on voltage instability due to violation of power equilibrium in a power network and introduces a new voltage stability pointer (NVSP). The proposed NVSP is developed from a reduced 2-bus interconnected network to predict the sensistivity of voltage stability to reactive power variation. The simulation results from MATLAB were evaluated on IEEE 14-bus test system. The contingency ranking was achieved by varying the reactive power on the load buses to its maximum
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36

Goa Tella, Teshome, Stanley Simiyu Sitati, and George Nyauma Nyakoe. "Effect of reactive power loading on the stability of power network bus voltage and transmission line." International Journal of Engineering & Technology 7, no. 4 (2018): 4995–5000. http://dx.doi.org/10.14419/ijet.v7i4.25816.

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Increased loading results in the instability of bus voltages and power transmission lines, which results in the outage of power transmission lines. For stable operation, finding the maximum loading limit of buses is needed. This paper introduces newly proposed modified voltage stability index (MVSI) and line stability index (Lst) that are used to rank buses and lines, respectively, based on the severity of load contingency. Thus, to account for the effect of inductive load on bus voltage and line stability, only load reactive power is increased up to its maximum stability limit. The MVSI
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37

Bhargavi, R. Naveena, and R. Anurup Bhargavi. "Optimal Location and Sizing of Reactive Power Compensation Devices for Voltage Stability Improvement of Radial Power Systems." ECS Transactions 107, no. 1 (2022): 367–75. http://dx.doi.org/10.1149/10701.0367ecst.

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With the advancement in technology, the electricity demand is increasing day by day. Power supply utilities are facing the problem to expand their network owing to the problems like availability of land in urban areas and Right of Way (ROW). Due to these problems, many of the existing lines are operating nearer to their thermal stability limit. Maintaining the voltage within the limits will be a challenging task for the utilities. Increased loading of the lines is making the power system to the verge of voltage stability. Many indices are proposed in the literature for predicting the voltage s
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Tian, Na, Tongfei Cui, Shiyang Rong, Jifeng Liang, and Jingyuan Dong. "Dynamic Reactive Power Optimization Configuration of New Energy Power Station Based on Fault Limit Removal Time." Journal of Physics: Conference Series 2474, no. 1 (2023): 012012. http://dx.doi.org/10.1088/1742-6596/2474/1/012012.

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Abstract The large-scale construction of long-distance, high voltage level transmission projects and sustained load demand increase negatively influence transient voltage stability. A certain amount of dynamic Var compensation at the receiving end of the power grid can significantly improve the stability. Most new energy power plants, such as wind power, and photovoltaic generation, have installed dynamic Var compensation devices. The potential for safety and stability control should be fully exploited. In this paper, it is concluded that the critical fault clearing time is the main index to m
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Tazky, Matej, Michal Regula, and Alena Otcenasova. "Impact of Changes in a Distribution Network Nature on the Capacitive Reactive Power Flow into the Transmission Network in Slovakia." Energies 14, no. 17 (2021): 5321. http://dx.doi.org/10.3390/en14175321.

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The main emphasis in the operation of an electricity system is placed on its safe and reliable operation. The flow of reactive power in a network can affect voltage conditions in individual nodes of the transmission system. In recent years, there have been changes in the network that have resulted in increased capacitive reactive power flows from lower voltage levels to higher ones. These flows can cause the voltage to rise above the limit. This paper examines recent changes in the reactive power transmission in the network, especially at lower voltage levels. The possible impact of these chan
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40

Chen, Shaoyu, Zhen Li, Bolong Shi, Xianting Ren, and SuiRong Li. "Research on reactive power and voltage coordinated control of intelligent distributed network." Journal of Physics: Conference Series 2427, no. 1 (2023): 012047. http://dx.doi.org/10.1088/1742-6596/2427/1/012047.

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Abstract with the continuous expansion of the scale of distributed new energy grid-connected power generation in the distribution network and the continuous improvement of penetration rate, the problem of distribution network voltage out of limit caused by distributed new energy grid connected can not be ignored. This paper analyzes the basic principle of voltage out of limit caused by the connection of distributed new energy sources to the distribution network,and analyzes the factors affecting the reactive power and voltage of the active distribution network with distributed new energy sourc
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41

Zhong, Qidi, Yulong Ma, Zhichuang Li, Yajun Lu, and Ming Li. "Reactive Power Control and SVG Coordinated Control Method for HVDC Transmission System." Journal of Physics: Conference Series 2532, no. 1 (2023): 012007. http://dx.doi.org/10.1088/1742-6596/2532/1/012007.

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Abstract This paper proposes a reactive power and SVG coordinated control method for a HVDC transmission system. The method includes calculating the reactive power ΔQ exchanged between the converter station and the AC system. Set the dead zone range of ΔQ and limit the output of ΔQ. Set the restriction condition of SVG’s ability to adjust and judge whether the reactive power emitted by SVG is restricted. Based on whether the reactive power sent by the SVG is limited and the limitation results of ΔQ, the input of the PI controller in the QPC module is calculated to complete the reactive power,
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42

Yan, Tian Xiang, Xiao Lan Xie, Xin Yu Chen, and Peng Niu. "Analysis of Thyristor Switched Three-Phase Capacitor." Advanced Materials Research 722 (July 2013): 311–16. http://dx.doi.org/10.4028/www.scientific.net/amr.722.311.

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it can limit the reactive power transmission to improve the voltage quality of power grid by installing parallel capacitors for reactive power compensation. But due to presence of transient transition process during power capacitors switching, it will seriously affect the service life of power capacitors and the safe operation of power system if the switching process of capacitors is not properly controlled. Firstly, this article described the fundamental principle and switching conditions of Thyristor Switched Capacitor (TSC). Secondly, the selection of switching time was analyzed for Thyrist
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43

Wu, Hong Mei, and Wen Ting Hui. "Study of a Multi Objective Reactive Power Compensation Device Considering Fault Current Limiting." Applied Mechanics and Materials 397-400 (September 2013): 1868–72. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.1868.

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With the increasing demands of power quality, high-quality power supply has become a necessary condition of modern social life. Power quality problems include voltage sag/swell, voltage unbalance and harmonics. To solve the above problem, a multi objective reactive power compensation device considering fault current limiting is designed, which can provide a certain degree of reactive power compensation to solve multi-objective system powered composite power quality problems during the normal working of the power system, and be able to quickly to limit the short-circuit current mode switching w
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44

Sakti, Fredi Prima, and Jimmy Trio Putra. "Optimal Reactive Power Dispatch untuk Meminimalkan Rugi Daya Menggunakan Flower Pollination Algorithm." Jurnal Teknik Elektro 11, no. 2 (2019): 36–43. http://dx.doi.org/10.15294/jte.v11i2.21680.

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This paper presents the Flower Pollination Algorithm (FPA) metaheuristic used to solve the Optimal Reactive Power Dispatch (ORPD) problem. ORPD is a non-linear optimization problem in the electric power system that regulates the generation of reactive power at the generator to minimize the real power loss on the transmission line while maintaining all parameters at the allowable value. In this case the FPA algorithm is used to find the minimum power loss by adjusting the voltage magnitude value of the generator, the transformer tap settings, and the reactive power compensator value in the syst
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45

NAYFEH, ALI H., AHMAD M. HARB, and CHAR-MING CHIN. "BIFURCATIONS IN A POWER SYSTEM MODEL." International Journal of Bifurcation and Chaos 06, no. 03 (1996): 497–512. http://dx.doi.org/10.1142/s0218127496000217.

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Bifurcations are performed for a power system model consisting of two generators feeding a load, which is represented by an induction motor in parallel with a capacitor and a combination of constant power and impedance PQ load. The constant reactive power and the coefficient of the reactive impedance load are used as the control parameters. The response of the system undergoes saddle-node, subcritical and supercritical Hopf, cyclic-fold, and period-doubling bifurcations. The latter culminate in chaos. The chaotic solutions undergo boundary crises. The basin boundaries of the chaotic solutions
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46

Zainuddin, Muammar, Frengki Eka Putra Surusa, Muhammad Asri, and Aprian Mokoagow. "Reactive power control of solar photovoltaic inverters for grid code compliance support." International Journal of Applied Power Engineering (IJAPE) 12, no. 3 (2023): 300–311. https://doi.org/10.11591/ijape.v12.i3.pp300-311.

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The compensation of reactive power in smart inverters is one solution to address the issue of voltage violations in the distribution network due to the penetration of solar photovoltaic power generation. However, options for reactive power control are limited during variations in irradiation and daily load on the feeder. This study aims to investigate the performance difference between four reactive power control techniques including Q(V) control, Q(P) control, fixed Q-Var, and fixed power factor (PF) available in smart inverters to reduce voltage violations due to PV integration and comply wi
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47

Wilson, David G., Rush D. Robinett, Giorgio Bacelli, Ossama Abdelkhalik, and Ryan G. Coe. "Extending Complex Conjugate Control to Nonlinear Wave Energy Converters." Journal of Marine Science and Engineering 8, no. 2 (2020): 84. http://dx.doi.org/10.3390/jmse8020084.

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This paper extends the concept of Complex Conjugate Control (CCC) of linear wave energy converters (WECs) to nonlinear WECs by designing optimal limit cycles with Hamiltonian Surface Shaping and Power Flow Control (HSSPFC). It will be shown that CCC for a regular wave is equivalent to a power factor of one in electrical power networks, equivalent to mechanical resonance in a mass-spring-damper (MSD) system, and equivalent to a linear limit cycle constrained to a Hamiltonian surface defined in HSSPFC. Specifically, the optimal linear limit cycle is defined as a second-order center in the phase
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48

Wang, Jianing, Yuan Fu, and Xiangyu Zhang. "Adaptive control of DFIG-based wind turbines for fault ride-through and reactive power support based on stator current transient component." Journal of Physics: Conference Series 2564, no. 1 (2023): 012060. http://dx.doi.org/10.1088/1742-6596/2564/1/012060.

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Abstract The fault ride-through performance is improved through the control of the transient components of the stator current. The reactive power provided by the DFIG within the margin of the converter can significantly enhance the grid-connected safety of the DFIG. Firstly, the reasons for the fault overcurrent of the DFIG’s rotor are analyzed. Secondly, according to the operating conditions of the wind turbine, the reactive power support limit of the DFIG-based wind turbines based on the stator current transient component control is analyzed, and an adaptive reactive power support control su
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49

Hosseini Rostami, Seyyed Mohammad, Ahmad Jafari, Mohamadreza Darvish, and Mahdie Tari. "Optimal Reactive Power Allocation in Distribution Grid with Emphasis on Voltage Stability Using Particle Swarm Optimization Algorithm." Journal of Computational and Theoretical Nanoscience 18, no. 6 (2021): 1737–43. http://dx.doi.org/10.1166/jctn.2021.9728.

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The structured environment requires an appropriate solution to reactive power management. During the restructuring of the electricity industry, power systems were divided into three main parts: generation, transmission, and distribution companies, coordinated by an independent system operator. Active power is the most important commodity traded in the electricity market. The independent operator of the grid has the duty of providing the necessary conditions for the realization of energy contracts on the transmission grid at any time. The arrangements that are considered for the production and
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50

Hosseini Rostami, Seyyed Mohammad, Ahmad Jafari, Mohamadreza Darvish, and Mahdie Tari. "Optimal Reactive Power Allocation in Distribution Grid with Emphasis on Voltage Stability Using Particle Swarm Optimization Algorithm." Journal of Computational and Theoretical Nanoscience 18, no. 6 (2021): 1737–43. http://dx.doi.org/10.1166/jctn.2021.9728.

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Abstract:
The structured environment requires an appropriate solution to reactive power management. During the restructuring of the electricity industry, power systems were divided into three main parts: generation, transmission, and distribution companies, coordinated by an independent system operator. Active power is the most important commodity traded in the electricity market. The independent operator of the grid has the duty of providing the necessary conditions for the realization of energy contracts on the transmission grid at any time. The arrangements that are considered for the production and
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