Study on photovoltaic primary frequency control strategy at different time scales
Abstract During the participation of photovoltaics in grid frequency regulation, different frequency regulation tasks are required at different time scales. The grid demands that photovoltaics (PVs) improve steady‐state frequency when facing short‐term load fluctuations, while also enhancing frequen...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-12-01
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| Series: | IET Renewable Power Generation |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/rpg2.13100 |
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| _version_ | 1832579819735351296 |
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| author | Lei Wang Runtao Zhang Qian Zang Ziwei Cheng Can Su Zhiwei Li Hao Zhang |
| author_facet | Lei Wang Runtao Zhang Qian Zang Ziwei Cheng Can Su Zhiwei Li Hao Zhang |
| author_sort | Lei Wang |
| collection | DOAJ |
| description | Abstract During the participation of photovoltaics in grid frequency regulation, different frequency regulation tasks are required at different time scales. The grid demands that photovoltaics (PVs) improve steady‐state frequency when facing short‐term load fluctuations, while also enhancing frequency response to long‐term environmental and load changes. Therefore, this study takes different time scales as the starting point. First, a two‐stage PV grid‐connected inverter generation system model is established, and an overall control strategy is proposed. Next, for short‐term time scales, a virtual inertia strategy based on direct current (DC) voltage droop control is proposed to utilize the energy storage effect of DC capacitors to suppress frequency fluctuations. For long‐term time scales, a strategy for controlling the variable reactive power reserve capacity is proposed to address the inadequacy of frequency regulation caused by traditional fixed de‐rating rate strategies and redundant standby power. Finally, the effectiveness of the proposed strategies is verified through model validation in MATLAB/Simulink. Simulation results demonstrate the effectiveness of the strategies at different time scales, aiding in improving grid frequency response. |
| format | Article |
| id | doaj-art-9f2cce295bae4487aaa85eb4cb6b1d3b |
| institution | Kabale University |
| issn | 1752-1416 1752-1424 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Renewable Power Generation |
| spelling | doaj-art-9f2cce295bae4487aaa85eb4cb6b1d3b2025-01-30T12:15:54ZengWileyIET Renewable Power Generation1752-14161752-14242024-12-0118163994400310.1049/rpg2.13100Study on photovoltaic primary frequency control strategy at different time scalesLei Wang0Runtao Zhang1Qian Zang2Ziwei Cheng3Can Su4Zhiwei Li5Hao Zhang6State Grid Hebei Electric Power Research Institute Shijiazhuang ChinaState Grid Hebei Electric Power Research Institute Shijiazhuang ChinaState Grid Hebei Electric Power Research Institute Shijiazhuang ChinaState Grid Hebei Electric Power Research Institute Shijiazhuang ChinaState Grid Hebei Electric Power Research Institute Shijiazhuang ChinaState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Baoding ChinaState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Baoding ChinaAbstract During the participation of photovoltaics in grid frequency regulation, different frequency regulation tasks are required at different time scales. The grid demands that photovoltaics (PVs) improve steady‐state frequency when facing short‐term load fluctuations, while also enhancing frequency response to long‐term environmental and load changes. Therefore, this study takes different time scales as the starting point. First, a two‐stage PV grid‐connected inverter generation system model is established, and an overall control strategy is proposed. Next, for short‐term time scales, a virtual inertia strategy based on direct current (DC) voltage droop control is proposed to utilize the energy storage effect of DC capacitors to suppress frequency fluctuations. For long‐term time scales, a strategy for controlling the variable reactive power reserve capacity is proposed to address the inadequacy of frequency regulation caused by traditional fixed de‐rating rate strategies and redundant standby power. Finally, the effectiveness of the proposed strategies is verified through model validation in MATLAB/Simulink. Simulation results demonstrate the effectiveness of the strategies at different time scales, aiding in improving grid frequency response.https://doi.org/10.1049/rpg2.13100frequency responsepower system simulationPWM inverterssolar photovoltaic systems |
| spellingShingle | Lei Wang Runtao Zhang Qian Zang Ziwei Cheng Can Su Zhiwei Li Hao Zhang Study on photovoltaic primary frequency control strategy at different time scales IET Renewable Power Generation frequency response power system simulation PWM inverters solar photovoltaic systems |
| title | Study on photovoltaic primary frequency control strategy at different time scales |
| title_full | Study on photovoltaic primary frequency control strategy at different time scales |
| title_fullStr | Study on photovoltaic primary frequency control strategy at different time scales |
| title_full_unstemmed | Study on photovoltaic primary frequency control strategy at different time scales |
| title_short | Study on photovoltaic primary frequency control strategy at different time scales |
| title_sort | study on photovoltaic primary frequency control strategy at different time scales |
| topic | frequency response power system simulation PWM inverters solar photovoltaic systems |
| url | https://doi.org/10.1049/rpg2.13100 |
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