• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

ELECTRIC POWER CONSTRUCTION ›› 2023, Vol. 44 ›› Issue (1): 64-72.doi: 10.12204/j.issn.1000-7229.2023.01.008

• Smart Grid • Previous Articles     Next Articles

Evaluation Index of Transient Overvoltage During Fault at HVDC Sending-End AC System

LIU Xiaolin1, CAO Zeyu1, GAO Bingtuan1(), JIANG Weiyong2, ZHOU Zhuan3, WANG Xingang3, ZHANG Feng3   

  1. 1. School of Electrical Engineering, Southeast University, Nanjing 210096, China
    2. State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102209, China
    3. State Grid Xinjiang Electric Power Corporation, Urumqi 830011, China
  • Received:2022-02-22 Online:2023-01-01 Published:2022-12-26
  • Contact: GAO Bingtuan E-mail:gaobingtuan@seu.edu.cn


The transient overvoltage caused by the DC blocking fault of the UHVDC transmission system and the short-circuit fault of the AC system has a serious impact on the stability of the system. Quantitative assessment of the transient performance index has important guiding significance for the dispatching operation of AC/DC power system. This paper analyzes the mechanism of transient overvoltage in AC system, deduces the calculation method of transient overvoltage on the basis of reactive power compensation and short-circuit ratio, and then defines the transient voltage evaluation index Rr. Research shows that, as the index Rr decreases, the transient voltage of the commutation bus at the sending end will increase after a system fault, and commutation failures will also occur at the receiving end. Finally, on the basis of the CIGRE benchmark HVDC standard test system, the effectiveness of the proposed index Rr is verified.

This work is supported by State Grid Science and Technology Project (No. 5230HQ21000S).

Key words: ultra-high voltage direct current transmission, transient overvoltage, evaluation index, sending-end AC system

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