南方电网技术Issue(4)：62-66,5.DOI:10.13648/j.cnki.issn1674-0629.2014.04.012
500 kV 砚都站断路器均压电容爆炸事故仿真分析及反措建议
Simulating Study of an Explosion Accident of Circuit Breaker’s Grading Capacitor in Yandu Substation and Its Couter-Measures
周原 1李谦 1彭向阳1
作者信息
- 1. 广东电网公司电力科学研究院，广州 510080
- 折叠
摘要
Abstract
According to an explosion accident of 500 kV circuit breaker grading capacitors caused by insulation switch operating fault, simulated the arc multi-restrike process between the moving and static contact of isolation switch with electromagnetic transient software ATP / EMTP, and studied the factors of the accident from the view of overvoltage and energy accumulation respectively. Results indi-cated that the continued arc discharge between the two contacts of insulation switch can be equivalent to a repeatedly charging process by the power system to the series circuit formed by circuit breaker parallel capacitors and the line-to-ground equivalent capacitance of Yan-Xijia transmission line. The voltage waveform across the capacitor includes power-frequency and high-frequency components, and the insulation breakdown by the superimposed effects of long term frequency voltage and switching voltage. According to the simula-tion we presented the anti-accident measures and recommendations.关键词
隔离开关/电弧/断路器均压电容/仿真Key words
insulation switch/arc/parallel capacitor of circuit breaker/simulation分类
信息技术与安全科学引用本文复制引用
周原,李谦,彭向阳..500 kV 砚都站断路器均压电容爆炸事故仿真分析及反措建议[J].南方电网技术,2014,(4):62-66,5.
