Two-stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectory
Wind turbines support grid frequency by rotor decelerating and then accelerating, but the instant power imbalance caused by rotor speed recovery may lead to a secondary frequency drop. Existing frequency regulation strategies find it challenging to balance secondary frequency drop depth with rotor s...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | International Journal of Electrical Power & Energy Systems |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142061524006501 |
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| _version_ | 1832595422938398720 |
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| author | Zhiting Zhou Hui Li Jie Zheng Hongtao Tan Xuewei Xiang Ran Yao |
| author_facet | Zhiting Zhou Hui Li Jie Zheng Hongtao Tan Xuewei Xiang Ran Yao |
| author_sort | Zhiting Zhou |
| collection | DOAJ |
| description | Wind turbines support grid frequency by rotor decelerating and then accelerating, but the instant power imbalance caused by rotor speed recovery may lead to a secondary frequency drop. Existing frequency regulation strategies find it challenging to balance secondary frequency drop depth with rotor speed recovery time. To address this issue, a frequency regulation scheme for wind turbines with adaptive coefficients and optimized power trajectory is proposed, considering both the kinetic energy release stage and rotor speed recovery stage. This scheme aims to minimize power imbalance and rotor speed deviation without compromising primary frequency regulation performance. Initially, a two-stage system frequency response model is established to analyze factors affecting secondary frequency drop and rotor speed recovery time. Then, the fuzzy logic-based droop gain and segmented inertia gain are introduced as control strategies for the first stage. Additionally, the criterion for exiting frequency regulation and optimized power trajectory with smooth time-varying changes are implemented as control strategies for the second stage. Simulation results show that the proposed scheme adaptively improves the frequency nadir and effectively balances secondary frequency drop with rotor speed recovery time under various scenarios. |
| format | Article |
| id | doaj-art-c32e850a27534063b9eb4120834eb6c6 |
| institution | Kabale University |
| issn | 0142-0615 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Electrical Power & Energy Systems |
| spelling | doaj-art-c32e850a27534063b9eb4120834eb6c62025-01-19T06:24:00ZengElsevierInternational Journal of Electrical Power & Energy Systems0142-06152025-03-01164110426Two-stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectoryZhiting Zhou0Hui Li1Jie Zheng2Hongtao Tan3Xuewei Xiang4Ran Yao5State Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing, 400044, China; Corresponding author.State Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing, 400044, ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing, 400044, China; CSSC HaiZhuang Windpower Co., Ltd., Chongqing, 400021, ChinaChongqing University of Science and Technology, Chongqing, 401331, ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing, 400044, ChinaState Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing, 400044, ChinaWind turbines support grid frequency by rotor decelerating and then accelerating, but the instant power imbalance caused by rotor speed recovery may lead to a secondary frequency drop. Existing frequency regulation strategies find it challenging to balance secondary frequency drop depth with rotor speed recovery time. To address this issue, a frequency regulation scheme for wind turbines with adaptive coefficients and optimized power trajectory is proposed, considering both the kinetic energy release stage and rotor speed recovery stage. This scheme aims to minimize power imbalance and rotor speed deviation without compromising primary frequency regulation performance. Initially, a two-stage system frequency response model is established to analyze factors affecting secondary frequency drop and rotor speed recovery time. Then, the fuzzy logic-based droop gain and segmented inertia gain are introduced as control strategies for the first stage. Additionally, the criterion for exiting frequency regulation and optimized power trajectory with smooth time-varying changes are implemented as control strategies for the second stage. Simulation results show that the proposed scheme adaptively improves the frequency nadir and effectively balances secondary frequency drop with rotor speed recovery time under various scenarios.http://www.sciencedirect.com/science/article/pii/S0142061524006501Wind turbinesFrequency regulationSecondary frequency dropRotor speed recoveryFuzzy logic |
| spellingShingle | Zhiting Zhou Hui Li Jie Zheng Hongtao Tan Xuewei Xiang Ran Yao Two-stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectory International Journal of Electrical Power & Energy Systems Wind turbines Frequency regulation Secondary frequency drop Rotor speed recovery Fuzzy logic |
| title | Two-stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectory |
| title_full | Two-stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectory |
| title_fullStr | Two-stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectory |
| title_full_unstemmed | Two-stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectory |
| title_short | Two-stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectory |
| title_sort | two stage frequency regulation for wind turbines with adaptive coefficients and optimized power trajectory |
| topic | Wind turbines Frequency regulation Secondary frequency drop Rotor speed recovery Fuzzy logic |
| url | http://www.sciencedirect.com/science/article/pii/S0142061524006501 |
| work_keys_str_mv | AT zhitingzhou twostagefrequencyregulationforwindturbineswithadaptivecoefficientsandoptimizedpowertrajectory AT huili twostagefrequencyregulationforwindturbineswithadaptivecoefficientsandoptimizedpowertrajectory AT jiezheng twostagefrequencyregulationforwindturbineswithadaptivecoefficientsandoptimizedpowertrajectory AT hongtaotan twostagefrequencyregulationforwindturbineswithadaptivecoefficientsandoptimizedpowertrajectory AT xueweixiang twostagefrequencyregulationforwindturbineswithadaptivecoefficientsandoptimizedpowertrajectory AT ranyao twostagefrequencyregulationforwindturbineswithadaptivecoefficientsandoptimizedpowertrajectory |