Improvement of the Loop Resistance Measurement for 1000 kV UHV Circuit Breaker

LI Yang; WNAG Qiaohua; XU Nan; LU Yun

doi:10.13296/j.1001-1609.hva.2016.07.007

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Improvement of the Loop Resistance Measurement for 1000 kV UHV Circuit Breaker

更新时间：2025-04-26

- Improvement of the Loop Resistance Measurement for 1000 kV UHV Circuit Breaker
- High VoltageApparatus Vol. 52, Issue 7, Pages: 45-49+54(2016)
- 作者机构：
  
  1. 国网上海市电力公司检修公司
  2. 上海交通大学
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2016.07.007
  CLC： TM561
- Published：2016
- 稿件说明：
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[1]李洋,王俏华,徐楠,陆云.1000kV特高压断路器回路电阻测量方法的改进[J].高压电器,2016,52(07):45-49+54.

LI Yang, WNAG Qiaohua, XU Nan, et al. Improvement of the Loop Resistance Measurement for 1000 kV UHV Circuit Breaker[J]. High voltageapparatus, 2016, 52(7): 45-49+54.
[1]李洋,王俏华,徐楠,陆云.1000kV特高压断路器回路电阻测量方法的改进[J].高压电器,2016,52(07):45-49+54. DOI： 10.13296/j.1001-1609.hva.2016.07.007.

LI Yang, WNAG Qiaohua, XU Nan, et al. Improvement of the Loop Resistance Measurement for 1000 kV UHV Circuit Breaker[J]. High voltageapparatus, 2016, 52(7): 45-49+54. DOI： 10.13296/j.1001-1609.hva.2016.07.007.

摘要

特高压检修存在着技术难度高、参考案例少、检修经验无等困难

特别是断路器回路电阻的测量

其可靠性直接关乎特高压设备的安全运行。为了寻找最佳的测量方案

为今后的特高压检修工作提供参考经验。文中依托1000kV特高压练塘站的首次检修

分别采用传统的单相直流电压降法、改进后的三相直流电压降法和不拆头带接地点测量法

使用两种仪器对两种1000kV断路器分别试验采样

对比标准值和出厂值发现

采用三相直流电压降法可以便捷、可靠地判断出断路器回路电阻值的合格与否

如需精确地定量分析还需采用单相直流电压降法进行复测。

Abstract

UHV maintenance encounters the difficulties in technology

examples and experience. Especially

the measurement reliability of circuit breaker loop resistance directly relates to safe operation of UHV equipment. In this study

conventional single-phase DC voltage drop method

the improved three-phase DC voltage drop method

and the measurement without removing the headband ground were applied to the first maintenance overhaul of1000 kV UHV equipment in Lian Tang Power Station. Two kinds of 1 000 kV circuit breakers were sampled and tested by two instruments

respectively

and the comparison between the standard and delivery values indicates that the three-phase DC voltage drop method can conveniently and reliably judge whether the loop resistance value of a circuit breaker meets standard or not

while the single-phase DC voltage drop method can be used for accurately quantitative analysis.

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