基于刀闸位置切换的双母线带旁路变电站主变电压切换回路改进方案

Improvement Scheme for Voltage Switching Circuit of Main Transformer in Double Bus Substation with Bypass Based on Knife Switch Position Switching

针对220 kV双母线带旁路主接线变电站,提出一种基于刀闸位置切换的双母线带旁路变电站主变电压切换回路改进方案,确保2套220 kV主变保护在旁路代路时满足交流电压应分别取自电压互感器互相独立绕组的要求。

For transformer substation of 220 kV double bus substation with bypass main connection,an improvement scheme for voltage switching circuit of main transformer in double bus substation with bypass based on knife switch position switching is proposed.Two sets of 220 kV main transformer protection are guaranteed to meet the requirement that the AC voltage should be taken from the independent windings of the voltage transformer when bypassing.