Study on Influence of Grading Capacitor on Pre-strike Characteristic of Double-break Vacuum Circuit Breaker

LI Hongwei; XU Xueshuai; XIONG Xiaochuan; HUANG Bo; MA Liuer

doi:10.13296/j.1001-1609.hva.2025.03.005

您当前的位置：

首页 >

文章列表页 >

Study on Influence of Grading Capacitor on Pre-strike Characteristic of Double-break Vacuum Circuit Breaker

Research & Analysis | 更新时间：2025-05-25

- Study on Influence of Grading Capacitor on Pre-strike Characteristic of Double-break Vacuum Circuit Breaker
- High Voltage Apparatus Vol. 61, Issue 3, Pages: 42-51(2025)
- 作者机构：
  
  云南电网有限责任公司普洱供电局，云南　普洱　 665099
- 作者简介：
- 基金信息：
  
  Science and Technology Project of China Southern Grid Yunnan Power Grid Co., Ltd.(050800KK52222038)
- DOI：10.13296/j.1001-1609.hva.2025.03.005
  CLC：
- Received：07 September 2024，
  
  Revised：07 December 2024，
  
  Published：16 March 2025
- 稿件说明：
移动端阅览
LI Hongwei, XU Xueshuai, XIONG Xiaochuan, et al. Study on Influence of Grading Capacitor on Pre-strike Characteristic of Double-break Vacuum Circuit Breaker[J]. High voltage apparatus, 2025, 61(3): 42-51.
DOI：

LI Hongwei, XU Xueshuai, XIONG Xiaochuan, et al. Study on Influence of Grading Capacitor on Pre-strike Characteristic of Double-break Vacuum Circuit Breaker[J]. High voltage apparatus, 2025, 61(3): 42-51. DOI： 10.13296/j.1001-1609.hva.2025.03.005.

摘要

双断口真空断路器能够有效提高耐受电压水平，显著降低重燃率，进而提升无功投切性能，具有重要的工程实际意义。文中通过实验分别研究了双断口真空断路器在直流电压下不并联均压电容以及并联均压电容条件下关合时的预击穿特性，包括预击穿开距及其分散性、预击穿电压、预击穿场强，并计算其威布尔分布。结果表明，通过并联合理大小的均压电容（约100 pF）可以使双断口分压更加均匀，从而有效改善双断口真空断路器的预击穿特性。实验结果表明，随着均压电容的增大，当均压电容值超过500 pF后，双断口真空断路器的预击穿特性将会变差。文中的研究可以为双断口真空断路器从减小电气分散性角度提高相控关合精准度提供技术支撑。

Abstract

The double-break vacuum circuit breaker can effectively improve the withstanding voltage level

significantly reduce the reignition rate

enhance the reactive power switching performance and thereby have significant practical engineering implications. In this paper

such pre-breakdown characteristic as pre-strike clearance and its dispersion

pre-strike voltage

pre-strike filed strength of double-break vacuum circuit breaker with and without shunt grading capacitors under DC voltage in case of making operation is studied through experiment

and its Weibull distribution is calculated. The result shows that the grading voltage of the double-break is more even through reasonable size of grading capacitance (about 100 pF)

thus effectively improving the pre-strike characteristic of the vacuum circuit breaker. The experimental result shows that with the increase of the grading capacitance

the pre-strike characteristic will become weak of the double-break vacuum circuit breaker when the grading capacitance exceeds 500 pF. The study in this paper can provide technical support of the double-break vacuum circuit breaker from the point of view of reducing electrical dispersion and improving controlled making accuracy.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on Pre-strike Characteristics of Double-break Vacuum Circuit Breaker with Grading Capacitance and Resistance

Accident Analysis of Grading Capacitance Explosion in 500 kV Circuit Breaker

Research and Design of 40.5 kV Double-break Vacuum Circuit Breaker for Reactive Power Switching

Related Author

LI Hongwei

WANG Chenglong

SUN Yu-jiang

TANG Shi-yu

LIN Qingquan

LIU Jifeng

PENG Jing

LI Rui

Related Institution

Chongqing Power Electric Company

重庆市电力公司重庆400014

Electric Power Research Institute, Yunnan Power Grid Co., Ltd.

Yunnan Power Grid Co.,Ltd.

Diqing Power Supply Bureau,Yunnan Power Grid Co.,Ltd.

⁰