采用独立地网的变电站二次系统防雷测试分析  

Analysis on Lightning Test of Secondary System in Substation with Independent Ground Grid

作　　者：郭强[1] 李建明[2] 田志岗[1] 周文乐 

机构地区：[1]西华大学电气信息学院,四川成都610039 [2]四川电力科学研究院,四川成都610072 [3]沙湾供电局,四川乐山614900

出　　处：《四川电力技术》2012年第2期49-51,共3页Sichuan Electric Power Technology

摘　　要：针对采用独立地网的变电站二次系统,分析了雷电波侵入的途径,并简要分析了其损害机理。针对雷电波不同途径侵入二次设备的情形,以实际变电站为对象进行现场试验,模拟雷电波入侵时的情形,测得每种情况下各接地体的冲击电位升,并计算电位差。最后根据实测数据和计算结果,分析该站二次系统防雷接地存在的一些问题,并提出整改建议。Aiming at the secondary system in the substation with independent ground grid,the ways of lightning surge on incoming services are analyzed,and the damage mechanism is also briefly analyzed.According to the different ways of lightning surge invading secondary equipment,the field test is carried out taking an actual substation as the object,and the impulse potential rise in each case is measured and the potential difference is calculated.Finally,according to the measured data and the calculated results,some problems existing in the lightning protection ground of secondary system in such substation are analyzed,and the rectification suggestions are proposed.

关 键 词：独立地网 二次系统 防雷接地 反击 

分 类 号：TM835[电气工程—高电压与绝缘技术]