Simulation Calculation of No-load and Short Arcing Interruption of 550 kV Fast Circuit Breaker

LIN Xin; SONG Yu; ZHOU Tao; WANG Feng; ZHU Jibin; XU Jianyuan; SONG Jialin

doi:10.13296/j.1001-1609.hva.2026.07.007

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Simulation Calculation of No-load and Short Arcing Interruption of 550 kV Fast Circuit Breaker

Research & Analysis | 更新时间：2026-07-06

- Simulation Calculation of No-load and Short Arcing Interruption of 550 kV Fast Circuit Breaker
- High Voltage Apparatus Vol. 62, Issue 7, Pages: 78-84,94(2026)
- 作者机构：
  
  沈阳工业大学电气工程学院，沈阳 110870
  山东泰开高压开关有限公司，山东泰安 271000
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.07.007
  CLC：
- Received：21 January 2026，
  
  Revised：2026-03-29，
  
  Published：16 July 2026
- 稿件说明：
移动端阅览
LIN Xin, SONG Yu, ZHOU Tao, et al. Simulation Calculation of No-load and Short Arcing Interruption of 550 kV Fast Circuit Breaker[J]. High Voltage Apparatus, 2026, 62(7): 78-84,94.
DOI：

LIN Xin, SONG Yu, ZHOU Tao, et al. Simulation Calculation of No-load and Short Arcing Interruption of 550 kV Fast Circuit Breaker[J]. High Voltage Apparatus, 2026, 62(7): 78-84,94. DOI： 10.13296/j.1001-1609.hva.2026.07.007.

摘要

高电压大容量快速断路器，能够迅速切除短路故障，显著降低短路电流对电气设备的动、热稳定冲击，提升系统运行的安全稳定性。文中通过缩短触头超程、提升分闸速度、增大充气压强等方法进行灭弧室结构改进，并通过断路器空载与短燃弧开断多物理场耦合仿真计算，得到常规550 kV断路器与快速断路器开断过程气室压强、温度分布云图与变化趋势，对比分析不同设计方案的气压与温度特性，为快速断路器灭弧室结构设计提供理论依据。研究结果表明：设计方案行程从常规断路器的200 mm缩短至175 mm，超程与压气室长度也相应缩短25 mm，分闸速度提升至13 m/s，充气压强为0.65 MPa，在空、负载开断中均可达到由常规设计的吹弧效果。建议采用该结构设计进行样机试验，验证仿真计算准确性。

Abstract

High voltage and large capacity fast circuit breaker can quickly clear short circuit fault and significantly reduce the impact of short circuit current on the peak and short time withstand current stability of electrical equipment as well as improve the safe and stable operation of system. In this paper

the structure of the interrupter is improved by shortening the overtstroke of contact

increasing the opening speed and the gas filling pressure. The noload and short arcing interruption process of the circuit breaker is simulated and calculated by coupling multiple physical fields

the distribution contour and variation trend of the pressure and temperature during the interruption of the conventional 550 kV circuit breaker and the fast circuit breaker are obtained. The gas pressure and temperature characteristics of different design schemes are compared and analyzed and the theoretical basis for the structural design of the arc chamber is provided. The research results show that the stroke of the design scheme is shortened from 200 mm to 175 mm

the length of the overstroke and the gas compartment is correspondingly shortened by 25 mm

the opening speed is increased to 13 m/s and the gas filling pressure intensity is 0.65 MPa. The arc blowing effects of the design scheme are comparable to those of the conventional design. It is suggested using this structural design for prototype test so to verify the accuracy of simulation calculation.

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references

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