Study on Cumulative Ablation Effect of Circuit Breaker due to Breaking Short-circuit Current

ZHANG Changhong; YANG Xu; LI Weiguo; CHEN Weimin; CHEN Wei; HUANG Dawei

doi:10.13296/j.1001-1609.hva.2020.02.009

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Study on Cumulative Ablation Effect of Circuit Breaker due to Breaking Short-circuit Current

更新时间：2025-04-26

- Study on Cumulative Ablation Effect of Circuit Breaker due to Breaking Short-circuit Current
- High VoltageApparatus Vol. 56, Issue 2, Pages: 53-61(2020)
- 作者机构：
  
  南方电网超高压输电公司检修试验中心
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.02.009
  CLC： TM561
- Published：2020
- 稿件说明：
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[1]张长虹,杨旭,黎卫国,陈伟民,陈蔚,黄大为.断路器开断短路电流累积烧蚀效应研究[J].高压电器,2020,56(02):53-61.

ZHANG Changhong, YANG Xu, LI Weiguo, et al. Study on Cumulative Ablation Effect of Circuit Breaker due to Breaking Short-circuit Current[J]. High voltageapparatus, 2020, 56(2): 53-61.
[1]张长虹,杨旭,黎卫国,陈伟民,陈蔚,黄大为.断路器开断短路电流累积烧蚀效应研究[J].高压电器,2020,56(02):53-61. DOI： 10.13296/j.1001-1609.hva.2020.02.009.

ZHANG Changhong, YANG Xu, LI Weiguo, et al. Study on Cumulative Ablation Effect of Circuit Breaker due to Breaking Short-circuit Current[J]. High voltageapparatus, 2020, 56(2): 53-61. DOI： 10.13296/j.1001-1609.hva.2020.02.009.

摘要

断路器在多次开断短路电流后

准确评估电流能量对灭弧室弧触头的烧蚀程度是一个困扰运维人员的技术难题

特别是在不解体断路器灭弧室的条件下

采用电气试验手段以何种特征参量准确反映弧触头的寿命状态是该难题的关键。文中重点研究断路器开断短路电流后触头的累积烧蚀效应

采用4台真型500 kV柱式断路器作为研究对象

结合动态电阻测试手段

在短路开断合成回路中跟踪检测断路器电寿命试验过程中弧触头状态的演化趋势

研究得到了电寿命试验前后弧触头烧蚀特性

以及表征弧触头状态的特征参量（有效接触位移、接触电阻和累积电流开断能量）的关联性

揭示了短路电流累积开断效应对断路器寿命状态的影响规律

可为运维人员评估断路器灭弧室状态以及制定后续检修策略提供依据。

Abstract

To accurately evaluate the ablation degree of contacts of a circuit breaker after repeatedly breaking shortcircuit current

four full-size 500 kV circuit breakers were investigated via electrical endurance tests with respect to the cumulative ablation effects of the contacts after interrupting short-circuit current

where dynamic contact resistance measurement（DRM） was adopted.The relationships of effective contact displacement

effective contact resistance

and cumulative current interrupting energy were established according to the variation of the contact ablation conditions in the electrical endurance tests.This study reveals the cumulative ablation effect of circuit breaker on its lifetime state

and may facilitate the condition evaluation of the circuit breaker chamber and the design of the maintenance strategy.

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