浅析发变线路组接线互感器二次回路的试验方法

Analysis the test method of the secondary circuit of the wiring mutual inductor in generator-transformer line group

阐述了发电厂发变线路组电流、电压互感器更换后的试验方法。根据一次接线情况,电流互感器回路采取静态短路试验方法,电压互感器回路为保证同期电压的准确性,采用倒送电的方法。文中对试验过程中的数据计算及保护配置提出了参考方案。采用以上试验方法,缩短了机组启动时间,节约了整套机组的启动成本。

In this paper,the test method after replacement of current mutual inductor and voltage mutual inductor in generator-transformer line group in power plant is described.According to the primary connection,the circuit of current mutual inductor adopts the static short-circuit test method;the circuit of voltage mutual inductor adopts the method of reverse power supply to ensure the accuracy of contemporaneous voltage.A reference scheme is proposed in the paper for data calculation and protection configuration in the test process.Using the above test method,the start-up time of the unit is shortened and as well as the start-up cost of the whole unit.