500kV变电站雷电波侵入过电压建模与分析

500 kV变电站在电网中占有重要的地位,如若因为雷电波侵入导致站内电气设备的损坏将造成巨大的经济损失,甚至引发电网瓦解或者大规模停电。文中根据湖南省岳阳市某500 kV变电站的资料,使用ATP-EMTP软件搭建变电站仿真模型来研究变电站雷电侵入波过电压防护的弱点。通过将进线段和变电站看为一个整体,建立合适的变电站设备、雷电流、杆塔、绝缘子闪络、电晕、输电线路、氧化锌避雷器等模型。进行计算分析使结果更符合实际,从而提出合理的避雷器布置方案,对变电站雷电过电压防护设计具有参考价值。

500kV Substation Lightning Over-voltage Modeling and Analysis

500 kV substation occupy an important position in the grid, If the lightning surge invasion the 500 kV substation cause equipment damage, it will cause huge economic losses,and even lead to power grid collapse or large-scale power system blackouts. In this paper, ATP-EMTP is used to build a simulation model based on the material of a 500 kV substation in Yueyang, Hunan to study the effect of lightning surge invasion.By looking into the line and substation as a whole, suitable substation equipment model, lightning current model, transmission tower model, insulator flashover model, the corona model, transmission line model, metal oxides arrester models are build, making the results more realistic. The papers make an appropriate arrester configuration through analysis of the results and have the certain reference value to the substation lightning over-voltage design.