摘要
随着电网规模的不断增大,同杆并架线路在浙江电网中的应用越来越多。而雷击引起同杆并架线路的同时故障、同时停役的事件也逐年增多。分析了浙江电网220 kV系统同杆并架线路的现状,指出了同杆并架线路因雷击同时跳闸对电网安全运行产生的危害,并从线路防雷、运行方式安排、继电保护配置等三个方面提出了应对措施。
With the enlargement of power grid, more and more paralleled lines on the same tower are applied in Zhejiang power grid. The fault caused by lightning strike on lines of the same tower and the simultaneous out-of-service are increasing year by year. This paper analyzes status quo of paralleled lines on the same tower in Zhejiang 220 kV power grid and it points out the harm to power grid safety due to the tripping of the paral- leled lines on the same tower caused by lightning strike. At last the paper proposes countermeasures from three respects： lightning protection of lines, operating mode arrangement and relaying protection configuration.
出处
《浙江电力》
2013年第1期4-6,共3页
Zhejiang Electric Power
关键词
同杆并架
输电线路
雷击
应对措施
paralleled lines on the same tower
transmission lines
lighting strike
countermeasures
