10 kV电力线路故障行波诊断技术研究与应用

Research and Application of Traveling Wave Diagnosis Technology for 10 kV Power Line Faults

10 kV铁路自闭贯通线路供电距离长,运行环境恶劣多变,故障频繁发生且难以及时排查。为解决铁路自闭贯通线路故障快速诊断与及时恢复供电难题,分析了分布式行波技术信号提取、故障诊断流程,并通过试验和现场真实故障案例进行了充分的验证。实际应用案例表明,分布式行波测距技术诊断结果可靠,能实现准确的判别故障区间以及精确的定位故障所在位置,可以有效应用于自闭贯通线路故障诊断中。

The 10 kV railway self-closing through line has long power supply distance,bad and changeable operation environment.Faults occur frequently and are difficult to check in time.In order to solve the problem of fast fault diagnosis and timely restoration of power supply for railway self-closing through line,the signal extraction and fault diagnosis flow of distributed traveling wave technology are analyzed,and fully verified by experiments and real fault cases on site.The practical application shows that the distributed traveling wave fault location technology has reliable diagnosis results,can accurately distinguish the fault zone and locate the fault location,and can effectively be used in fault diagnosis of self-closing through lines.