距离保护在测试过程中测试仪输出电流、电压分析

Analysis on output voltage and circuit of tester in the process of the distance protection

输电线路的距离保护在测试过程中需要输入测试仪的参数较多,包括阻抗、阻抗角、故障类型、短路电流、额定电压、零序补偿系数等。按照所输入的参数,继电保护测试仪可按计算程序自动计算并生成测试所需的电压及电流,但并没有相应的计算过程。通过分析测试仪输出电压、电流的计算过程,使测试人员从理论上明确距离保护在各种短路故障下的测试原理,供进行相关测试时参考。

The distance protection of transmission line in the process of testing input many parameters,including impedance,angle of impedance,fault types,short circuit current,rated voltage,zero-sequence compensation coefficient and so on.According to the request of parameters put into,relay protection testing device can be calculated automatically with the calculation program and the generation of voltage and current test required,but without corresponding calculation process.By through analysis of calculation in process of tester output voltage,current,enable testers to clear from the theoretical principle of distance protection test in various short circuit faults,the result of this paper provide refercece for operator relate to testing.