摘要
蒲圻电厂规划容量1200MW,在选择高压厂用电系统接地方式时,计算容量最大的厂用变所连接供电网络的单相接地电容电流,电流偏高,不能采取不接地方式。而经消弧线圈接地,不仅设备投资增加,接地保护也较复杂。经分析计算,6kV高压厂用电系统只能采取中性点经低电阻接地方式,并配置单相接地保护。
The planned capacity of Puqi Power Plant is 1 200 MW. Because of the high capacitor current of the auxiliary transformer, the high-voltage auxiliary power system must he grounded. However, ground through are suppression coil will not only increase equipment cost, hut also complicate the grounding protection. After calculation, neutral grounding through 35 Ω resistance with single phase grounding protection was chosen for the 6 kV HV auxiliary power system.
出处
《电力建设》
2006年第12期70-71,共2页
Electric Power Construction
关键词
电容电流
中性点接地方式
单相接地
capacitor current
neutral grounding
single phase grounding
