广州电网新一代雷电定位系统的建设与应用

摘要

广州地区雷电活动频繁,但在广州仅有1个探测站点布置,且不含中心站,雷电探测效率和定位精度均较差,不能满足雷击故障定位需求.基于此,广州电网从2012年开始新一代雷电定位系统建设,2013年建设完成涵盖5个探测站的新雷电定位系统,并完成与中国南方电网有限责任公司(以下简称“南网”)雷电定位系统联网,联网后的新系统在雷击探测效率与定位精度两方面都有了明显提升,同时新系统建有中心站,可实现落雷次数、雷电流幅值等关键参数的测量统计.为此,使用新系统对广州地区2015年与2016年的雷电活动情况进行了统计与分析,同时针对2016年广州输电线路雷击跳闸数据进行对比,分析了3种雷电定位系统在定位精度和探测效率两个关键指标上的差异,所得结果显示:新联网系统探测效率为91.4％,比旧系统提高约17％;新联网系统平均定位精度为592.52m,比旧系统平均定位精度(896.66m)提升约34％.%Lightning activities in Guangzhou area are frequent,but there is only one detection station without a central station.Thus,lightning detection efficiency and location precision are both poor,which can not satisfy requirement for lightning fault location.Therefore,Guangdong power grid co.,ltd.starts construction of a new generation lightning location system from 2012 and has finished constructing the new generation location system covering five detection stations in 2013.Meanwhile,it has accomplished interconnection with the lightning location system of CSG.The new system after interconnection has been greatly improved in detection efficiency and location precision,and it has a central station which is able to realize measurement and statistics for critical parameters such as lightning frequency and lightning current amplitude.The new system has been used for statistics and analysis on lightning activities in Guangzhou area in 2015 and 2016.By comparing lightning tripping data of transmission lines in 2016,differences of three lightning location systems in location precision and detection efficiencies are analyzed.Results show detection efficiency of the new interconnected system is 91.4％ which has been improved by17％ higher than the old system,and the average location precision of the new system is 592.52 m which has been promoted by 34％ higher than the average location precision of the old system.