地铁主所35 kV真空断路器开断电抗器故障分析
王明飞(中铁二院工程集团有限责任公司,成都市 610031)
Fault Analysis of Breaking Reactor of 35 kV Vacuum Circuit - breaker in Metro Main Substation
WANG Mingfei(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)
Abstract:Combined with the vacuum envelope explosion accident of 35 kV vacuum circuit‑breaker in a metro main substation when breaking the reactor,this paper analyzes and summarizes the fault causes,and takes relevant preventive actions. To reduce the over‑voltage level,it is suggested to install a lightning arrester and resistance‑capacitance absorption device on the reactor side and set reactors in groups.
Key words:metro main substation;35 kV vacuum circuit‑breaker;reactive power compensation;switch cabinet;reactor;lightning arrester;resistance‑capacitance absorption device;over‑voltage
摘 要:结合某项目地铁主所35 kV真空断路器在开断电抗器时发生的真空泡炸裂事故,对故障原因进行分析、总结,并采取相关的预防措施。建议在电抗器侧配置避雷器和阻容吸收装置并分组设置电抗器,以降低过电压水平。
关键词:地铁主所;35 kV真空断路器;无功补偿;开关柜;电抗器;避雷器;阻容吸收装置;过电压
中图分类号:TU852 文献标识码:A
doi:10.3969 / j. issn.1003 - 8493.2021.08.011