Improvement of isolation switch control circuit in Yinchuan Eastern 750 kV Converter Station

ZHAO Yikun; HE Lei; QIAO Chengyin

doi:10.3969/j.issn.1672-3643.2013.05.002

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Improvement of isolation switch control circuit in Yinchuan Eastern 750 kV Converter Station

更新时间：2025-09-24

- Improvement of isolation switch control circuit in Yinchuan Eastern 750 kV Converter Station
- Ningxia Electric Power Issue 5, (2013)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1672-3643.2013.05.002
  CLC：
- Published Online：05 November 2020，
  
  Published：2013
- 稿件说明：
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ZHAO Yikun, HE Lei, QIAO Chengyin. Improvement of isolation switch control circuit in Yinchuan Eastern 750 kV Converter Station[J]. Ningxia electric power, 2013, (5).
DOI：

ZHAO Yikun, HE Lei, QIAO Chengyin. Improvement of isolation switch control circuit in Yinchuan Eastern 750 kV Converter Station[J]. Ningxia electric power, 2013, (5). DOI： 10.3969/j.issn.1672-3643.2013.05.002.

摘要

ZCW-363型户外高压隔离开关在电网中应用广泛

但该型隔离开关采用交直流混合控制回路

在银川东750 kV换流站应用中存在误动作的重大隐患。针对此问题

通过对该控制回路进行分析

提出在控制回路中加装电气继电器的改进措施。应用结果表明:改造实现了交流回路与直流回路完全隔离

控制回路优化后隔离开关运行良好

保证了高压电网可靠、安全地运行。

Abstract

ZCW-363 type outdoor HV isolation switch is widely used in power grid

but this type ofisolation switch adopts AC-DC mixed control circuit which exists hidden trouble of misoperation inapplication of Yinchuan Eastern 750 kV Converter Station. Aiming at this problem

by analysis thecontrol circuit

puts forward the improvement measures of installing electrical relay in control circuit.The practical effect shows that improvement realizes absolute isolation between AC circuit and DC cir?cuit

the isolation switch operates well after the control circuit optimized

ensures HV power grid reli?able and safe operation.

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