输电线路树障隐患预放电特征模拟试验研究

Simulation test on the characteristics of predischarge for tree fault under transmission line

输电线路作为电力系统的重要组成部分,其安全运行直接关系着电网供电可靠性。在实际运行过程中,线路走廊内的树木是输电线路极大的安全隐患,不断生长的树木造成输电线路发生闪络、跳闸事故。如何及时发现、处理和预防树障以保障电力安全供应成为电力运维人员关注的焦点。为此,本文搭建了输电线路树障隐患预放电模拟试验测试平台,研究得到不同阶段树障预放电过程的特征参数,为构建输电线路故障数据库实现智能识别提供了参考。

As an important part of power system,the safe operation of transmission line is directly related to the reliability of power supply.In the actual operation process,these trees have a great potential threaten to transmission line in the transmission line corridor:these growing trees cause the transmission line flashover and trip accident.How to find,deal with and prevent tree fault in time and ensure the power supply security has become the focus of maintainers.Therefore,a simulation test platform for predischarge of tree fault is built and the characteristic parameters of tree fault predischarge process in different stages is studied,which provides data reference for the construction of transmission line fault database to realize intelligent identification.