Journal of Shandong University(Engineering Science) ›› 2026, Vol. 56 ›› Issue (3): 166-176.doi: 10.6040/j.issn.1672-3961.0.2025.145

• Electrical Engineering • Previous Articles     Next Articles

Identification method of transient voltage instability in case of renewable generation supply

ZOU Xin1, MENG Jian1, FU Shiqi1, LIU Junyu2*, WANG Haifeng2, DANG Chongyang2   

  1. ZOU Xin1, MENG Jian1, FU Shiqi1, LIU Junyu2*, WANG Haifeng2, DANG Chongyang2(1. State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102209, China;
    2. Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education(Shandong University), Jinan 250061, Shandong, China
  • Published:2026-06-09

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Abstract: To address the issue of reduced identification accuracy in the conventional positive-feedback-based transient voltage stability identification method under renewable generation integration scenarios, an improved strategy incorporating additional criteria was proposed on the basics of the original method. Voltage dynamic characteristics during the post-disturbance recovery stage were examined according to renewable generation unit control strategies, and the factors responsible for the degraded accuracy of the original method under renewable integration were identified. The conventional positive-feedback-based voltage instability criterion was modified by introducing the criterion activation-duration threshold and the voltage safety threshold. Simulation-based validation was conducted on the IEEE 39-bus system and the CEPRI-TAVC benchmark system. The results showed that appropriately prolonging the criterion activation-duration threshold and reducing the voltage safety threshold improved the identification accuracy of transient voltage stability.

Key words: renewable energy generation, transient voltage stability, identification method, additional criteria, accuracy

CLC Number: 

  • TM712
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