| When transmission line fault occurs,it's important to look out the point of failure for accurate positioning to determine accurate fault point location for transmission line state of operation and maintenance management quickly,enhance the level of the lean production operations management,it can not only save time for fast repair timely to restore power supply and can carry on the lightning protection design for the high failure rate of circuit to provide important technical support.The research content about this paper is summarized as follows:(1)First of all,summarizes the application research of traveling wave fault location and developing trend,point out the technical difficulties about wave fault location field application.According to wave theory,expound the reason about wave in the process of the traveling wave transmission attenuation and distortion,refraction and reflection,it can provide a theoretical basis fot distributed transmission line traveling wave fault location system research.(2)And then,in view of the current traveling wave fault location is yet to be solve the technical difficulties in field application study,introduces the solutions and test results of this study.Highlights include: First,develop a output power 2 w of communication power supply when transmission lineman frequency load current is among 14 ~ 1000;Second,this paper expounds the travelling wave current sensor and the design of the power frequency current sensor and related to its function verification test;Three,this paper introduces the data communication reliability design strategy from data communication module antenna selection and redundancy design two aspects,.(3)Finally,analysis a traveling wave fault case of the scene of travelling wave current and fault current power frequency data from transmission line traveling wave fault location system based on the development of prototype,it verifies the feasibility of this research. |
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