电力系统中高压电气试验方案的改进与检测

Improvement and Test of High Voltage Electrical Test Plan in Power System

电力系统中,高压电气试验是检测系统运行性能、防控故障的关键。发变机组短路试验是电气启动试验的重要构成。当前,随着微型发变机保护装置的应用,传统的电压或电流二次回路并接电压表或电流表的试验方法存在短路排安装问题,致使验证保护方向的正确性受限。基于此,结合理论和实践经验,针对短路试验中发电机的出口、主变高压侧不能安置短路排等问题提出改进措施,即将短路排安装于变压器组的开关处或TA处,并将短路排替换为接地刀闸,优化试验方案,并验证了方案的效用性。

The high voltage electrical test in the power system is the key support for detecting the performance of the system and preventing and controlling the fault,and the short-circuit test of the generator unit is an important component of the electric starting test.At present,with the application of the miniature generator protection device,the traditional voltage or current two circuits are connected to the voltmeter or ammeter,and there is a problem of short circuit installation,which leads to the limitation of the correctness of the protection direction.Therefore,will combine theory and practice experience,in view of the short circuit test,the outlet of generator and the high voltage side of main transformer can not install short circuit,to put the short circuit arrangement in the switch or TA of the transformer group,replace the short circuit by the grounding switch,so as to optimize the test scheme,and the effectiveness of the scheme is verified.