Study on Effect of Spring Fatigue on Mechanical Characteristics of High Voltage SF<sub>6</sub> Circuit Breaker

XIN Weifeng; WANG Dong; QIN Hao; ZHANG Guogang; LIU Yakui; MA Deying; ZHANG Zhuo; YAN Qingfang

doi:10.13296/j.1001-1609.hva.2021.01.003

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Study on Effect of Spring Fatigue on Mechanical Characteristics of High Voltage SF₆ Circuit Breaker

更新时间：2025-04-26

- Study on Effect of Spring Fatigue on Mechanical Characteristics of High Voltage SF₆ Circuit Breaker
- High VoltageApparatus Vol. 57, Issue 1, Pages: 20-25(2021)
- 作者机构：
  
  1. 国网河南省电力公司电力科学研究院
  2. 西安交通大学电力设备电气绝缘国家重点实验室
  3. 国网河南省电力公司
  4. 国网河南省电力公司郑州供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2021.01.003
  CLC： TM561.3
- Published：2021
- 稿件说明：
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[1]辛伟峰,王栋,秦浩,张国钢,刘亚魁,马德英,张卓,闫庆方.弹簧疲劳对高压SF_6断路器机械特性的影响研究[J].高压电器,2021,57(01):20-25.

XIN Weifeng, WANG Dong, QIN Hao, et al. Study on Effect of Spring Fatigue on Mechanical Characteristics of High Voltage SF₆ Circuit Breaker[J]. High voltageapparatus, 2021, 57(1): 20-25.
[1]辛伟峰,王栋,秦浩,张国钢,刘亚魁,马德英,张卓,闫庆方.弹簧疲劳对高压SF_6断路器机械特性的影响研究[J].高压电器,2021,57(01):20-25. DOI： 10.13296/j.1001-1609.hva.2021.01.003.

XIN Weifeng, WANG Dong, QIN Hao, et al. Study on Effect of Spring Fatigue on Mechanical Characteristics of High Voltage SF₆ Circuit Breaker[J]. High voltageapparatus, 2021, 57(1): 20-25. DOI： 10.13296/j.1001-1609.hva.2021.01.003.

摘要

机械特性对高压断路器的开断性能具有重要的意义。文中以配弹簧操动机构的126 kV高压SF

断路器为研究对象

实验测量了分合闸弹簧的疲劳曲线

在分析弹簧疲劳机理的基础上

基于弹簧应力松弛过程的理论模型建立了预测弹簧疲劳的线性回归方程;建立高压断路器弹簧机构多体动力学模型

根据高压断路器实际工况进行动力学仿真

从而对高压断路器的机械特性进行计算分析;在此基础上分析了高压断路器投入使用不同年限情况下的分合闸行程、速度随时间的变化特性

揭示了高压断路器在不同疲劳情况下的特性劣化变化规律

实现了高压断路器全寿命周期的机械状态预测。

Abstract

The mechanical characteristics are of great significance for the interruption performance of high voltage circuit breaker.In this paper

the 126 kV high-voltage SF

circuit breaker with spring operating mechanism is taken as the study object.The fatigue curve of the opening and closing spring is measured by the experiment and

on the basis of analyzing the fatigue mechanism of the spring and the theory model of the relaxation process of spring stress

the linear regression equation for predicting spring fatigue is set up.The multi-body dynamics model of the spring operating mechanism of high-voltage circuit breaker is set up and the dynamic simulation is carried out in accord

ance with actual operation condition of the circuit breaker so that the mechanical characteristic of circuit breaker is calculated and analyzed.On this basis

the variation characteristic of the opening/closing stroke and speed with time at different years of operation are analyzed

the performance degradation law of circuit breaker with different fatigue conditions is revealed and mechanical state predication of high-voltage circuit breaker within the whole life cycle is achieved.

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Study on Effect of Spring Fatigue on Mechanical Characteristics of High Voltage SF6 Circuit Breaker

DOI：10.13296/j.1001-1609.hva.2021.01.003

摘要

Abstract

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Study on Effect of Spring Fatigue on Mechanical Characteristics of High Voltage SF₆ Circuit Breaker