Dynamic Analysis on Key Parts of SF<sub>6</sub> High-voltage Circuit Breaker Based on Impact Load

YANG Guang; SUN Longyong; LI Senran; YAO Canjiang; LIU Yingying; ZHU Ye; MA Muzhou; CHEN Yaya; ZHANG Fan; QIN Wangyang; LIU Wenhuan

doi:10.13296/j.1001-1609.hva.2025.06.009

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Dynamic Analysis on Key Parts of SF₆ High-voltage Circuit Breaker Based on Impact Load

Research & Analysis | 更新时间：2025-06-12

- Dynamic Analysis on Key Parts of SF₆ High-voltage Circuit Breaker Based on Impact Load
- High Voltage Apparatus Vol. 61, Issue 6, Pages: 77-84(2025)
- 作者机构：
  
  1.河南平高电气股份有限公司，河南　平顶山　 467001
  2.大连交通大学机械工程学院，辽宁　大连　 116028
  3.平高集团有限公司，河南　平顶山　 467001
- 作者简介：
- 基金信息：
  
  Henan Pinggao Electric Co., Ltd. Technology Project (Development of Large Capacity 252 kV Three Phase Mechanical Interlocking Column Circuit Breaker)
- DOI：10.13296/j.1001-1609.hva.2025.06.009
  CLC：
- Received：01 December 2024，
  
  Revised：10 March 2025，
  
  Published：16 June 2025
- 稿件说明：
移动端阅览
YANG Guang, SUN Longyong, LI Senran, et al. Dynamic Analysis on Key Parts of SF₆ High-voltage Circuit Breaker Based on Impact Load[J]. High voltage apparatus, 2025, 61(6): 77-84.
DOI：

YANG Guang, SUN Longyong, LI Senran, et al. Dynamic Analysis on Key Parts of SF₆ High-voltage Circuit Breaker Based on Impact Load[J]. High voltage apparatus, 2025, 61(6): 77-84. DOI： 10.13296/j.1001-1609.hva.2025.06.009.

摘要

在高压断路器的运行过程中，受到强冲击载荷的影响，传动机构中的连板等零件会出现形变和断裂的失效现象。为了解决这一问题，针对高压断路器在分合闸过程中受冲击力影响的情况，建立了高压断路器的冲击动力学模型，以分析其在冲击载荷下的动态响应，并计算关键零件的疲劳寿命。首先，通过气流场仿真计算分析压气室压力在分闸过程中的变化情况；然后，通过建立运动学模型对高压断路器动态特性进行计算；并根据压气室的负载反力和高压断路器的负载力建立高压断路器的动力学模型，对关键零部件在冲击作用下的受力情况进行数值模拟计算；基于冲击动力学计算结果，建立高压断路器疲劳寿命分析模型针对易损关键零件进行疲劳寿命分析，疲劳寿命计算结果与试验结果对比误差在10.9%，满足实际工程要求；最后，基于冲击动力学计算结果对关键零部件进行结构参数敏感度分析。研究结果显示，优化后的零件最大应力降低了21.5%，有效避免了零件因应力过大而导致的形变和断裂等问题。文中提出的冲击动力学计算模型以及疲劳寿命计算模型对于高压断路器的设计优化具有重要的参考意义。

Abstract

During the operation of high-voltage circuit breaker

such parts as link plate in the transmission mechanism can generate deformation and breakage due to the impact of strong shock loads. To address this issue and in response to the situation where circuit breaker is affected by impact force during the opening and closing process

a impact dynamic model of high voltage circuit breaker is set up so to analyze its dynamic response under the shocking load and calculate the fatigue life of key parts. Firstly

the variation of pressure in the puffer compartment in the opening process is analyzed through airflow field simulation. Then

a kinematic model is set up to calculate the dynamic characteristics of the high voltage circuit breaker. The dynamic model of the high voltage circuit breaker is set up in accordance with the load reaction force of the puffer compartment and the load force of the circuit breaker to perform the numerical simulation calculation of the stress of the key parts under the action of shock force. Based on the calculation result of the impact dynamics

the fatigue life analysis model of the high voltage circuit breaker is set up to per-form the fatigue life analysis of the critical vulnerable parts. The the comparison error between the fatigue life calculation result and the experimental result is 10.9%

which meets practical engineering requirement. Finally

a structural parameter sensitivity analysis is conducted for the key parts based on the impact dynamics calculation results. The re-search results show that the maximum stress of parts after optimization is reduced by 21.5%

which effectively pre-vents such issues as deformation and breakage due to excessive stress. The impact dynamics calculation model and fatigue life calculation model proposed in this study provide important references for the design optimization of high voltage circuit breaker.

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Dynamic Analysis on Key Parts of SF6 High-voltage Circuit Breaker Based on Impact Load

DOI：10.13296/j.1001-1609.hva.2025.06.009

摘要

Abstract

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references

Dynamic Analysis on Key Parts of SF₆ High-voltage Circuit Breaker Based on Impact Load