摘要
500 k V HGIS变电站在结构上和GIS变电站不同,站内电气设备的雷击过电压水平也会不同。因此,需要对500 k V HGIS变电站进行雷电侵入波过电压研究,以确保在雷电波侵入时,站内电气设备上的电压水平不超过其绝缘水平。以某500 k V HGIS变电站为例,考虑了多种运行方式、线路高抗、线路电晕等影响因素,采用国际上通用的仿真计算程序EMTP,建立了该变电站的雷击过电压仿真模型;并对不同运行方式下,该变电站雷电侵入波过电压水平进行了分析计算。根据仿真结果,提出了可能的雷击过电压保护方案,具有实际工程参考价值。
The HGIS substation and GIS substation of 500 kV level are different in structure, and the lightning over - voltage level of their electrical apparatus is also different. So it is necessary to study the lightning over - voltage in 500 kV HGIS sub- station in order to ensure that the electrical apparatus will keep the voltage level in normal range under any operating modes during the lightning wave intrusion. Taking a 500 kV HGIS substation for example and taking the various influencing factors into account, including operating modes, line reactor and line corona, the simulation model of lightning over - voltage of the substation is established using electromagnetic transient program （EMTP） as simulation tool, and the lightning over- voltage level of the substation is analyzed and calculated in various operating modes. Based on simulation results, a possible protection scheme against lightning over - voltage is proposed, which has a reference value for practical engineering.
出处
《四川电力技术》
2016年第2期29-33,共5页
Sichuan Electric Power Technology
关键词
HGIS变电站
防雷保护
EMTP
避雷器
HGIS substation
protection against lightning
EMTP
lightning arrester
