两起高压直流输电系统保护动作事件分析及对策

YAO Qixin

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两起高压直流输电系统保护动作事件分析及对策

更新时间：2025-08-13

- 两起高压直流输电系统保护动作事件分析及对策
- Automation of Electric Power Systems Vol. 40, Issue 23, Pages: 163-167(2016)
- 作者机构：
  
  国网湖北省电力公司检修公司,湖北省,武汉市,430050
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2016
- 稿件说明：
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YAO Qixin. [J]. Automation of electric power systems, 2016, 40(23): 163-167.
DOI：

YAO Qixin. [J]. Automation of electric power systems, 2016, 40(23): 163-167. DOI：

摘要

高压直流输电系统单极运行时

中性母线电压过高会影响系统正常运行。介绍了一起由感应电压导致的同塔双回直流输电系统单极运行时的大地回线转换开关保护动作事件和一起由换相失败引发的换流器差动保护动作事件。文中对这两起事件保护动作过程进行了全面的分析并提出了改进措施以避免相同类型故障的再次发生。通过现场试验和实际运行情况验证了措施的有效性。

Abstract

Over-high neutral bus voltage will affect the normal operation of a high voltage direct current(HVDC)transmission system

especially when the system is in monopolar operation condition. This paper describes an event of ground return transfer switch protection action caused by induction voltage when one of the double-circuit DC transmission systems is in monopolar operation condition and an event of converter differential protection action caused by commutation failure. To avoid recurrence of similar accidents

an overall analysis is made on the protection action process of two events and improving measures are put forward. Validity of the improving measures is proved by the test and actual operations.

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