Journal of Shanghai Jiao Tong University ›› 2022, Vol. 56 ›› Issue (3): 333-341.doi: 10.16183/j.cnki.jsjtu.2021.004

Special Issue: 《上海交通大学学报》“新型电力系统与综合能源”专题(2022年1~6月)

• New Type Power System and the Integrated Energy • Previous Articles     Next Articles

A Suppression Strategy for Subsequent Commutation Failures Considering Commutation Capability of Recovery Process

CONG Xinpeng1, ZHENG Xiaodong1(), CAO Yaqian1, TAI Nengling1, MIAO Yuancheng2, LI Ke2   

  1. 1. Key Laboratory of Control of Power Transmission and Conversion of the Minstery of Education, Shanghai Jiao Tong University, Shanghai 200240, China
    2. East China Branch of State Grid Corporation of China, Shanghai 200120, China
  • Received:2021-01-06 Online:2022-03-28 Published:2022-04-01
  • Contact: ZHENG Xiaodong


In order to suppress subsequent commutation failures of high voltage direct current (HVDC), the dynamic process of electrical and control quantities during system recovery is studied, and the main reason for subsequent commutation failures is proposed in the paper. During the recovery process, the voltage of the converter bus after the fault is in a state of drop, the actual firing angle of the inverter is in overshoot, and direct current continues to rise. These factors result in an insufficient system commutation capability to complete the transfer of valve arm inductance energy during the commutation process. A suppression strategy for subsequent commutation failure considering the commutation capability of the system recovery process is proposed. By limiting the direct current (DC) when the firing angle is in overshoot, the system commutation capability is increased, and subsequent commutation failures are suppressed. In addition, the DC system is effectively recovered. The proposed theory is tested and verified based on the HVDC CIGRE Benchmark in PSCAD/EMTDC.

Key words: high voltage direct current (HVDC), subsequent commutation failure, recovery process, commutation capability

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