220 kV变电站10 kV开关柜交流电源供电回路的设计改进

Improvement of Design for AC Power Supply Circuit of 10kV Switchgear in 220kV Substation

分析了220 k V瑞雪变电站10 k V开关柜单相交流电源环形供电回路设计思路,针对调试过程中发现该环形供电回路无法正常工作的现象,详细分析了漏电保护开关设置不当引起故障的直接原因,并提出了故障解决方法和开关柜环形供电回路设计改进意见,可有效提高供电可靠性和安全性。

This paper studies the design for AC circular power supply circuit of 10kV switchgear in the 220kV Ruixue substation.As the circular power supply circuit fails to operate normally,this paper analyzes the direct reason in detail,viz.improper setting of leakage circuit breaker,and puts forward the solving method and design improvement of circular power supply circuit of switchgear,which effectively improves the reliability and safety of power supply.