摘要
介绍了电力系统的过电压以及进行带电作业时需要考虑的过电压种类,根据实际运行情况计算了500kV托源线、源安线的单相接地故障过电压和故障清除过电压,同时根据GB/T19185—2003计算了海拔1000m～2500m时的相与地、相与相的带电作业安全距离,并进行了危险率的校核。
This paper introduces the over-voltage and the types of the over-voltage needing taking in consideration in the hot-line operation, according to the actual operation situation, calculates the single-phase ground-fault over-voltage and the fault-clearing over-voltage on the 500 kV line, and according to GB/T 19185--2003, calculates the safe distance for the hot-line operation of phase to phase and phase to earth with an elevation of 1 000 m ～2 500 m, and checks the danger ratio.
出处
《科技情报开发与经济》
2006年第7期157-159,共3页
Sci-Tech Information Development & Economy
关键词
电力系统
过电压
带电作业
安全距离
electric power system
over-voltage
hot-line operation
safe distance
