Calculation and Measurement of Circuit Breaker Opening Force

LIU Yani; ZHU Qiqi; LI Yuan; WANG Zhuang

doi:10.13296/j.1001-1609.hva.2015.05.034

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Calculation and Measurement of Circuit Breaker Opening Force

更新时间：2025-04-26

- Calculation and Measurement of Circuit Breaker Opening Force
- High VoltageApparatus Vol. 51, Issue 5, Pages: 184-187(2015)
- 作者机构：
  
  西安西电开关电气有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.05.034
  CLC： TM561
- Published：2015
- 稿件说明：
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[1]刘雅妮,朱琦琦,李渊,王状.断路器分闸力值计算与实测[J].高压电器,2015,51(05):184-187.

LIU Yani, ZHU Qiqi, LI Yuan, et al. Calculation and Measurement of Circuit Breaker Opening Force[J]. High voltageapparatus, 2015, 51(5): 184-187.
[1]刘雅妮,朱琦琦,李渊,王状.断路器分闸力值计算与实测[J].高压电器,2015,51(05):184-187. DOI： 10.13296/j.1001-1609.hva.2015.05.034.

LIU Yani, ZHU Qiqi, LI Yuan, et al. Calculation and Measurement of Circuit Breaker Opening Force[J]. High voltageapparatus, 2015, 51(5): 184-187. DOI： 10.13296/j.1001-1609.hva.2015.05.034.

摘要

断路器分闸力值对断路器结构设计、机械寿命估算分析至关重要。文中提出了3种断路器分闸力值计算的方法。第1种方法通过实测断路器传动连杆的应变进而计算获取分闸力值;第2种方法是基于分闸运动特性获取断路器加速度

从而计算出断路器分闸力值;第3种方法则是通过操动机构弹簧力值反推断路器分闸力值。以某断路器为例

分别采用上述3种方法进行了计算、分析和对比

发现在断路器分闸冲击的工况下

断路器的冲击载荷是持续载荷的2.0

.2倍

该结论与经典教材上给出的经验公式一致。

Abstract

Circuit breaker opening force is very important to circuit breaker’s structure design and mechanism life analysis. In this paper

three methods for calculating circuit breaker opening force are presented. The first method calculates the opening force on the basis of measured strain of circuit breaker’s drive link. The second method calculates the opening force by fitting the opening motion curve to obtain the opening acceleration. And the third method inversely derives the opening force from the spring force of operating mechanism. Taking some circuit breaker for example

the opening forces are calculated with the three methods and compared. The results show that the impact load of the circuit breaker is 2.0

.2 times of the sustaining load.

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