本文介绍了输电线路中GPRS定位装置的工作原理, 分析了GPRS定位装置中过电压保护元件MOV的导通原理及其导通时间, 并通过理论分析与计算, 得出因MOV导通产生的干扰行波并不会对双端行波测距法中首波头的精确提取造成影响, 所以, 在GPRS定位输电线路中进行故障测距可以使用行波测距法.然后对GPRS监控配电线路的结构进行分析, 并阐述了GPRS通信的优点及其具体应用, 为其进一步发展打下坚实的基础.%In this paper, the working principle of GPRS positioning device in transmission line is introduced. Then, the conduction principle and on-time of the over-voltage protection component MOV in the GPRS positioning device are analyzed. Through theoretical analysis and calculation, it is concluded that the interference traveling wave generated by the MOV conduction does not affect the accurate extraction of the first wave head in the double-terminal traveling wave ranging method. Therefore, the traveling wave ranging method can be used for fault location in the GPRS positioning transmission line. The structure of GPRS monitoring distribution line is analyzed, and the advantages and specific applications of GPRS communication are expounded, which lays a solid foundation for its further development.
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