高海拔地区110kV变压器中性点过电压仿真研究  

Simulation of Over-voltages of 110 kV Transformer Neutral Point in Qinghai Power Grid

作　　者：李舟 李江涛[1] 张显聪[1] 王煜杰[2] 康钧[2] 徐世山[2] 李军[2] 何宝龙[2] 张乔根[1] 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049 [2]青海电力科学试验研究院,青海西宁810008

出　　处：《陕西电力》2008年第10期1-4,共4页Shanxi Electric Power

摘　　要：使用PSCAD/EMTDC软件,选取青海电网中典型的变电站——祁连110 kV变电站的主变压器进行仿真,计算在不同时刻遭受雷击、单相短路以及两相同时短路情况下变压器中性点过电压。并通过对数据的分析,为变压器中性点保护间隙与避雷器的绝缘配合提供重要的参考依据。In this paper, PSCAD/EMTDC is used to simulate the main transformer, which is in Qilian 110 kV substation in Qinghai Grid. The over-voltage of transformer neutral point is calculated in the case of the lightning stroke at different time, single phase short circuit and two-phase short eircuit. And through the data analysis, an important reference for the insulation coordination of protection gap and arrester of the trausformer neutral point is provided.

关 键 词：变压器 中性点 过电压 PSCAD/EMTDC 绝缘配合 

分 类 号：TM866[电气工程—高电压与绝缘技术]