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高压直流输电系统换相失败研究综述
作者:
作者单位:

1.智能电网教育部重点实验室(天津大学),天津市 300072;2.南京南瑞继保电气有限公司,江苏省南京市 211102

摘要:

换相失败是采用电网换相换流器的高压直流输电系统中常见故障之一,换相失败的发生会导致直流功率波动,甚至直流闭锁,威胁电网安全稳定运行。为聚焦换相失败关键问题,降低换相失败发生概率,文中对高压直流输电系统换相失败的相关研究进行了总结归纳。首先,从器件和系统两方面分析了换相失败的发生机理。然后,根据换相失败发生次序将换相失败分为首次换相失败和后续换相失败2种情况,分别分析了导致不同换相失败情况发生的影响因素以及抑制措施。最后,综合已有研究成果指出了换相失败领域中仍有待解决的问题。

关键词:

基金项目:

国家重点研发计划资助项目(2016YFB0900603);国家电网公司科技项目(52094017000W)。

通信作者:

作者简介:

宋金钊(1992—),男,博士研究生,主要研究方向:交直流混联系统逆变侧故障分析与保护。E-mail:1017234022@tju.edu.cn
李永丽(1963—),女,通信作者,博士,教授,博士生导师,主要研究方向:电力系统保护与控制。E-mail:lyltju@163.com
曾亮(1994—),男,硕士,主要研究方向:换相失败抑制方法。E-mail:zengliang@tju.edu.cn


Review on Commutation Failure of HVDC Transmission System
Author:
Affiliation:

1.Key Laboratory of the Ministry of Education on Smart Power Grids (Tianjin University), Tianjin 300072, China;2.NR Electric Co., Ltd., Nanjing 211102, China

Abstract:

Commutation failure is one of the common failures in high voltage direct current (HVDC) transmission systems using line-commutated converters (LCCs). The occurrence of commutation failures will cause DC power fluctuations and even DC blockage, threatening the safe and stable operation of the power grid. In order to focus on the key issues of commutation failure and reduce the probability of commutation failure, this paper summarizes the related research on commutation failure of HVDC transmission systems. First, the mechanism of commutation failure is analyzed from both the device and the system aspects. Then, according to the sequence of occurrence of commutation failures, the commutation failures are divided into two cases: the first commutation failure and the subsequent commutation failure. The influence factors and restraining measures of different commutation failures are analyzed. Finally, based on the existing research, the unsolved problems in the field of commutation failure are pointed out.

Keywords:

Foundation:
This work is supported by National Key R&D Program of China (No. 2016YFB0900603) and State Grid Corporation of China (No. 52094017000W)Foundation:.
引用本文
[1]宋金钊,李永丽,曾亮,等.高压直流输电系统换相失败研究综述[J].电力系统自动化,2020,44(22):2-13. DOI:10.7500/AEPS20200120002.
SONG Jinzhao, LI Yongli, ZENG Liang, et al. Review on Commutation Failure of HVDC Transmission System[J]. Automation of Electric Power Systems, 2020, 44(22):2-13. DOI:10.7500/AEPS20200120002.
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  • 收稿日期:2020-01-20
  • 最后修改日期:2020-05-29
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  • 在线发布日期: 2020-11-18
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