基于OPGW的输电线路落雷检测与定位研究

Research on Lightning Detection and Location in Power Grid Based on OPGW

利用OPGW(光纤复合架空地线)内光纤的法拉第磁光效应,研究了基于光纤的输电线路OPGW上雷击信号检测与定位的可行性,开发了相关设备,并进行了一系列实验。结果表明,通过检测OPGW中传输光信号的变化有可能实现OPGW上的落雷监测,并对雷击点进行定位,为输电线路的防雷设计和改造提供更多有用信息。

In this paper,the feasibility of lightning detec-tion and location based on OPGW (Optical Fiber Composite Overhead Ground Wire)in power grids is studied on the basis of Faraday magneto-optical effect of the fiber inside the OPGW. Related equipment is developed,and a series of experiments are carried out. The results show that,by measuring the optical signal transmitted in OPGW, it is very possible to monitor lightning on OPGW and find the lightning-point positions, which would provide much useful information for the design and reconstruction of lightning protection in power grid.