• 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): 73-81.doi: 10.12204/j.issn.1000-7229.2023.01.009

• Smart Grid • Previous Articles     Next Articles

A Variable-Slope Current Deviation Control Method to Suppress Subsequent Commutation Failure

CHAO Wujie1,3(), DENG Chaoping1,3(), HUANG Junwei1,3(), LI Yuanqi2(), WANG Yuhong2(), CHEN Liwei2()   

  1. 1. Fujian Power Co.,Ltd.Electric Power Research Institute,Fuzhou 350007,China
    2. College of Electrical Engineering, Sichuan University, Chengdu 610065, China
    3. Fujian Key Laboratory of Smart Grid Protection and Operation Control,Fuzhou 350007,China
  • Received:2022-03-23 Online:2023-01-01 Published:2022-12-26
  • Contact: LI Yuanqi E-mail:zlwng2016@163.com;619524260@qq.com;21810021@zju.edu.cn;948373739@qq.com;yuhongwang@scu.edu.cn;1184486695@qq.com


In order to reduce the risk of subsequent commutation failure in HVDC transmission system, the commutation failure mechanism is analyzed, and combined with symmetrical and asymmetric fault detectors, an improved scheme of current deviation control which can be adjusted according to the severity of fault is proposed. The suppression effect of the slope of current deviation control on commutation failure is analyzed. It is found that the larger the slope of slope function in current deviation control is, the more sensitive it is to input current deviation, and the larger the commutation margin increment is, the more conducive it is to suppress subsequent commutation failure. Finally, the proposed control scheme is realized on the basis of CIGRE HVDC Standard Test System in PSCAD / EMTDC simulation software. The simulation results show that the current deviation control method proposed in this paper can effectively reduce the risk of subsequent commutation failure of HVDC system and improve the operation characteristics of HVDC system.

This work is supported by State Grid Corporation of China Research Program (No.52130420001S).

Key words: high voltage DC transmission, subsequent commutation failure, current deviation control, commutation margin

CLC Number: