Synchronous Closing Technology Based on Dynamic Breakdown Characteristics of SF<sub>6</sub> Circuit Breaker

CHENG Tingting; LI Zhibing; BAI Changyu; GUAN Yonggang; LIU Beiyang; TANG Cheng

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Synchronous Closing Technology Based on Dynamic Breakdown Characteristics of SF₆ Circuit Breaker

更新时间：2025-12-08

- Synchronous Closing Technology Based on Dynamic Breakdown Characteristics of SF₆ Circuit Breaker
- Vol. 42, Issue 6, Pages: 1805-1810(2016)
- 作者机构：
  
  1. 清华大学电机工程与应用电子技术系
  2. 中国电力科学研究院
  3. 平高集团有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 June 2016，
  
  Published：2016
- 稿件说明：
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CHENG Tingting, LI Zhibing, BAI Changyu, et al. Synchronous Closing Technology Based on Dynamic Breakdown Characteristics of SF₆ Circuit Breaker[J]. 2016, 42(6): 1805-1810.
DOI：

CHENG Tingting, LI Zhibing, BAI Changyu, et al. Synchronous Closing Technology Based on Dynamic Breakdown Characteristics of SF₆ Circuit Breaker[J]. 2016, 42(6): 1805-1810. DOI：

摘要

为了进一步降低电容器组及其投切开关的合闸涌流与过电压

介绍了一种改进的SF

断路器合闸动态击穿特性（预击穿特性）测量方法

并根据合闸动态击穿特性与合闸时间的分布范围

制订了选相合闸策略。研制了1套最高输出电压400 k V的击穿特性测量装置

在1次合-分闸操作中可同时获得断路器在合闸与分闸操作过程中触头间隙的动态击穿特性;对1台126 k V SF

断路器进行了试验研究

成功获得了该断路器的合闸动态击穿特性;根据该断路器的合闸动态击穿特性与合闸时间的分散性

制定了相应的选相控制策略;理论分析证明考虑断路器特性以后

最大预击穿电压下降了0.015 8

.336 2（标幺值）

合闸时刻的分布范围降低了0.02

.35 ms;试验结果表明

该控制方案满足设计要求。

Abstract

In order to weaken more inrush current and overvoltage for capacitor banks and switchgears

we introduced a modified pre-strike measurement method of SF

circuit breaker

and put forward a synchronous closing scheme based on the pre-strike characteristics and the distribution of closing time. Moreover

we introduced equipment for dielectric strength characteristics measurement with a maximum output voltage of 400 k V

by which the dynamic breakdown characteristics of contact gap can be measured during the high voltage switchgear closing and opening once. Besides

we analyzed the dynamic breakdown characteristics of a 126 k V SF

circuit breaker by test. Based on the dynamic closing breakdown characteristics and the range of closing time

e made a synchronous controlling strategy. Theoretical analysis proves that

considering the characteristics above

the pre-strike voltage is reduced by 0.015 8

.336 2 per unit

and the range of the making time is reduced by 0.02

.35 ms. The strategy meets the design requirements well.

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Related Institution

Electrical Engineening College,Shenyang University of Technology

School of Sciences, Xi’an University of Technology

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School of Electrical Engineering, Wuhan University

School of Electric and Electronic Engineering, North China Electric Power University

AI问答

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Synchronous Closing Technology Based on Dynamic Breakdown Characteristics of SF6 Circuit Breaker

DOI：

摘要

Abstract

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Synchronous Closing Technology Based on Dynamic Breakdown Characteristics of SF₆ Circuit Breaker