行波技术在配电线路接地故障检测中的应用

针对配电网故障选线可靠性和故障测距准确性,直接影响配电网运行的安全性问题,结合行波接地故障选线及测距原理,研究了基于行波法的配电线路故障选线及测距技术。将该技术应用到某油田变电站中。测试结果表明:该故障选线定位测距方法能够准确求出配电网接地故障段的故障参数,并能对故障进行精确定位测距,提高了配电网故障选线排除效率和测距定位的精确性。

Application of travelling wave technology in grounding fault detection of distribution circuit

In view of the complexity of grounding fault situation of distribution network, the reliability of fault line selection, and the accuracy of fault location directly affects the power supply safety. Combining the traveling wave principle of fault line selection and fault location, the grounding fault detection technology of distribution line based on the travelling wave method is researched. The technology has been appplied in some substation and the test results show that this distribution circuit grounding fault detection system method can accurately calculate the fault parameters, which can improve the fault line selection removal efficiency and the fault location accuracy.