加强广东电网110 kV及220 kV敞开式变电站雷电侵入波保护分析

近年，广东电网110kV，220kV敞开式变电站雷电侵入波事故呈显著上升趋势，事故率和耐雷指标明显高于一般运行水平，为此，在分析事故原因的基础上，提出在广东地区110kV，220kV敞开式变电站架空出线侧加装避雷器保护的具体措施，并通过电网实际运行数据的统计，对加装出线避雷器保护的有效性、加装数量和工程投资、安装位置及设备选型、避雷器运行维护等问题进行分析，对变电站雷电侵入波保护、过电压及绝缘配合国标修订具有参考意义。

Research on Strengthening Protection from Lightning Intruding Waves for 110 kV and 220 kV Open-air Substations in Guangdong

In recent years incoming lightning accidents of 110 kV and 220 kV open-air substations in Guangdong Power Grid rise remarkably;the accident rate and lightning-resistant index are considerably higher than ordinary level.Based on causation analysis of the above problem,the paper puts forward adding line lightning arresters on 110 kV and 220 kV open-air substations in Guangdong area,and then develops research on the validity of adding arresters,arrester quantity,project investment,setting position,equipment choosing,and operation maintenance of arresters,etc.by enumerating practical running data of power grid.The study gives reference to strengthen incoming lightning protection of substations as well as edit the national standard of overvoltage and insulation cooperation.