Analysis of Inconsistent Protection Action for Re-closing of Series Compensation of Single Phase Transient Ground Fault of 500 kV Line

WANG Junping; ZHANG Ying; YANG Yifu; WU Junmin; ZHOU Lei

doi:10.14044/j.1674-1757.pcrpc.2022.05.006

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Analysis of Inconsistent Protection Action for Re-closing of Series Compensation of Single Phase Transient Ground Fault of 500 kV Line

更新时间：2024-09-21

- Analysis of Inconsistent Protection Action for Re-closing of Series Compensation of Single Phase Transient Ground Fault of 500 kV Line
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 43, Issue 5, Pages: 35-41(2022)
- 作者机构：
  
  1. 国网黑龙江省电力有限公司超高压公司齐齐哈尔运维分部
  2. 大连民族大学
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2022.05.006
  CLC： TM862;TM762.2
- Published：2022，
- 稿件说明：
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WANG JUNPING, ZHANG YING, YANG YIFU, et al. Analysis of Inconsistent Protection Action for Re-closing of Series Compensation of Single Phase Transient Ground Fault of 500 kV Line. [J]. Power capacitor & reactive power compensation, 2022, 43(5): 35-41.
DOI：

WANG JUNPING, ZHANG YING, YANG YIFU, et al. Analysis of Inconsistent Protection Action for Re-closing of Series Compensation of Single Phase Transient Ground Fault of 500 kV Line. [J]. Power capacitor & reactive power compensation, 2022, 43(5): 35-41. DOI： 10.14044/j.1674-1757.pcrpc.2022.05.006.

摘要

针对某500kV带有串补装置线路瞬时性单相接地故障过程中的零序后加速保护动作，重合不成功，依据相关重合闸后加速原理及串补装置结构的特殊性，结合保护动作、录波数据和SOE记录，分析了造成重合闸误动原因，进而深入分析可控串补装置及固定串补装置重投动作行为的不一致原因，同时对串补装置重控制投逻辑更加明晰。在此基础上，提出了优化保护控制程序、修改保护动作逻辑，调整保护定值等解决的建议，为设计与运行中串补站保护配置和运维的借鉴经验。

Abstract

In view of such issues aszero sequence post acceleration protection action and unsuccessful reclosing operation of 500 kV line with series compensation device during transient single phase ground fault

the cause of reclosing mal-operation is analyzed in accordance with related acceleration post acceleration principle and structural particularity of series compensation device in combination with protection action

recording data as well as SOE record.The cause of inconsistent re-switching of both thyristor controlled and fixed series compensation devices are analyzed further. At the same time

the re-control logic of the series compensation device is more clear. On this basis

the suggestion of such solutions as optimizing protection control procedure

modifying the protection action logic and adjusting the protection settings are proposed

which provide reference experience for protection configuration

operation and maintenance of the series compensation station in the design and operation.

关键词

单相重合闸固定串补(FSC)可控串补(TCSC)后加速保护分析

Keywords

single-phase re-closing operationfixed series compensation（FSC）thyristor controlled series compensation（TCSC）post-acceleration protectionanalysis

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