Oscillation Mechanism and Suppression of Variable-Speed Pumped Storage Unit with Full-Size Converter Based on the Measured Single-Input and Single-Output Impedances
As the penetration rate of clean energy gradually increases, the demand for flexible regulation resources in the power grid is increasing accordingly. The variable-speed pumped storage unit with a full-size converter (FSC-VSPSU) can provide fast and flexible regulation resources for the power grid,...
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MDPI AG
2024-11-01
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| author | Pengyu Pan Gang Chen Huabo Shi Lijie Ding Yufei Teng Xiaoming Zha |
| author_facet | Pengyu Pan Gang Chen Huabo Shi Lijie Ding Yufei Teng Xiaoming Zha |
| author_sort | Pengyu Pan |
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| description | As the penetration rate of clean energy gradually increases, the demand for flexible regulation resources in the power grid is increasing accordingly. The variable-speed pumped storage unit with a full-size converter (FSC-VSPSU) can provide fast and flexible regulation resources for the power grid, which assists in the stable operation of the clean-energy-dominated power systems. Thus, its application is gradually becoming widespread. FSC-VSPSU relies on the power electronic converter for grid connection. When the impedance mismatch between FSC-VSPSU and the power grid occurs, the grid-connected system will experience oscillations, which seriously threatens its safe and stable operation. Aiming at this, this article firstly relies on the SISO impedance measurement and an equivalent impedance analysis to obtain the stability analysis criterion. Furthermore, applying the impedance matching analysis with the Bode diagram, the influence rules of the parameters of the grid-connected FSC-VSPSU on oscillation are obtained. In addition, with the summarized oscillation analysis results, this study delves into an exploration of pertinent strategies for oscillation suppression. Finally, a grid-connected FSC-VSPSU simulation model is built in MATLAB/SIMULINK, and the simulation results verify the correctness of the oscillation analysis results and the effectiveness of the proposed oscillation suppression strategy. |
| format | Article |
| id | doaj-art-b9d9f479fda94defae81d69d16c44dca |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-b9d9f479fda94defae81d69d16c44dca2025-08-20T01:53:43ZengMDPI AGApplied Sciences2076-34172024-11-0114221039810.3390/app142210398Oscillation Mechanism and Suppression of Variable-Speed Pumped Storage Unit with Full-Size Converter Based on the Measured Single-Input and Single-Output ImpedancesPengyu Pan0Gang Chen1Huabo Shi2Lijie Ding3Yufei Teng4Xiaoming Zha5State Grid Sichuan Electrical Power Research Institute, Chengdu 610041, ChinaState Grid Sichuan Electrical Power Research Institute, Chengdu 610041, ChinaState Grid Sichuan Electrical Power Research Institute, Chengdu 610041, ChinaState Grid Sichuan Electric Power Company, Chengdu 610095, ChinaState Grid Sichuan Electrical Power Research Institute, Chengdu 610041, ChinaSchool of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, ChinaAs the penetration rate of clean energy gradually increases, the demand for flexible regulation resources in the power grid is increasing accordingly. The variable-speed pumped storage unit with a full-size converter (FSC-VSPSU) can provide fast and flexible regulation resources for the power grid, which assists in the stable operation of the clean-energy-dominated power systems. Thus, its application is gradually becoming widespread. FSC-VSPSU relies on the power electronic converter for grid connection. When the impedance mismatch between FSC-VSPSU and the power grid occurs, the grid-connected system will experience oscillations, which seriously threatens its safe and stable operation. Aiming at this, this article firstly relies on the SISO impedance measurement and an equivalent impedance analysis to obtain the stability analysis criterion. Furthermore, applying the impedance matching analysis with the Bode diagram, the influence rules of the parameters of the grid-connected FSC-VSPSU on oscillation are obtained. In addition, with the summarized oscillation analysis results, this study delves into an exploration of pertinent strategies for oscillation suppression. Finally, a grid-connected FSC-VSPSU simulation model is built in MATLAB/SIMULINK, and the simulation results verify the correctness of the oscillation analysis results and the effectiveness of the proposed oscillation suppression strategy.https://www.mdpi.com/2076-3417/14/22/10398variable-speed pumped storage unit with full-size converterimpedance matchingoscillation analysisoscillation suppressionvoltage-source converter |
| spellingShingle | Pengyu Pan Gang Chen Huabo Shi Lijie Ding Yufei Teng Xiaoming Zha Oscillation Mechanism and Suppression of Variable-Speed Pumped Storage Unit with Full-Size Converter Based on the Measured Single-Input and Single-Output Impedances Applied Sciences variable-speed pumped storage unit with full-size converter impedance matching oscillation analysis oscillation suppression voltage-source converter |
| title | Oscillation Mechanism and Suppression of Variable-Speed Pumped Storage Unit with Full-Size Converter Based on the Measured Single-Input and Single-Output Impedances |
| title_full | Oscillation Mechanism and Suppression of Variable-Speed Pumped Storage Unit with Full-Size Converter Based on the Measured Single-Input and Single-Output Impedances |
| title_fullStr | Oscillation Mechanism and Suppression of Variable-Speed Pumped Storage Unit with Full-Size Converter Based on the Measured Single-Input and Single-Output Impedances |
| title_full_unstemmed | Oscillation Mechanism and Suppression of Variable-Speed Pumped Storage Unit with Full-Size Converter Based on the Measured Single-Input and Single-Output Impedances |
| title_short | Oscillation Mechanism and Suppression of Variable-Speed Pumped Storage Unit with Full-Size Converter Based on the Measured Single-Input and Single-Output Impedances |
| title_sort | oscillation mechanism and suppression of variable speed pumped storage unit with full size converter based on the measured single input and single output impedances |
| topic | variable-speed pumped storage unit with full-size converter impedance matching oscillation analysis oscillation suppression voltage-source converter |
| url | https://www.mdpi.com/2076-3417/14/22/10398 |
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