一种用于校验双端行波测距装置的测试系统的研发与测试

Development and test of a test system for verifying double-ended traveling wave fault location equipment

双端行波测距技术利用故障行波的初始波头抵达故障线路两端的时间差来实现故障定位,比单端测距和传统测距技术有着较高的精度和可靠性。双端行波测距装置在投入运行前必须经过专门的校验和测试,这是传统的继电保护测试仪所不能做到的。提出了一种用于校验该装置的测试系统的设计实现方案,并对系统样机做了大量的实验测试。实验结果表明,该测试系统的电压、电流输出具有很高的频率精度、幅值精度和同步性,满足双端行波测距装置的校验需求。

The double-ended traveling wave fault location technology uses the time difference between the initial wave head of the fault traveling wave to achieve fault location,and has higher accuracy and reliability than single-ended and traditional fault location techniques.The double-ended traveling wave fault location equipment must undergo special check and test before putting into operation,this is what the traditional relay protection tester can't do.This paper presents a design and implementation scheme for a test system which is used to verify the equipment,and a large number of experimental tests are performed on the prototype.The experimental results show that the voltage and current output of the test system have high frequency accuracy,amplitude accuracy and synchronism,which can meet the verification requirements of the double-ended traveling wave fault location equipment.