期刊论文

Research on Lightning Overvoltage Protection of 1 000 kV GIS Substation

中文

电力学报

1005-6548

2019

34

3

249-255

10.13357/j.cnki.jep.002801

湖南省教育厅资助科研项目（15C0031）；

本校为第一机构

采用ATP-EMTP软件建立1 000 kV GIS变电站仿真模型,分析了1 000 kV GIS变电站远近区冲击接地电阻、避雷器配置、雷击杆塔位置以及雷电流陡度对其雷击侵入波过电压的影响。仿真研究表明,雷电流反击杆塔与雷电流直击杆塔两种情况下,杆塔接地电阻的变化对于站内设备过电压影响不同;主变上配置避雷器的防雷水平高于出线处配置避雷器的防雷水平;当杆塔雷击位置变化时,其雷电入侵过电压也会随之变化;当雷电流的陡度系数越大时,主变上产生的过电压也会越大。

The simulation model of 1 000 kV GIS substation is established by using ATP-EMTP software.The influence of impact grounding resistance,arrester configuration,lightning tower location and lightning current steepness on Lightning intrusion wave over-voltage of 1 000 kV GIS substation is analyzed.The simulation results show that the grounding resistance of tower has different influence on the overvoltage of equipment in the station when lightning current strikes tower and lightning current strikes tower directly;the lightning protection level of lightning arrester on main transformer is higher th...