高压电器2018，Vol.54Issue(2)：20-25,32,7.DOI:10.13296/j.1001-1609.hva.2018.02.004
1100kV GIS设备振荡冲击试验电压下的波过程仿真计算研究
Wave Process Simulation Analysis of 1100 kV GIS Under Oscillation Impulse Testing Voltages
康钧 1李秋阳 1李渊 1曲全磊 1李江涛 2胡梦晨 1程鹏 3彭洁 1王煜杰1
作者信息
- 1. 国网青海省电力公司电力科学研究院,西宁810008
- 2. 西安交通大学,西安710049
- 3. 中国电力科学研究院,北京100192
- 折叠
摘要
Abstract
In the process of field impulse voltage withstand test of UHV GIS(gas insulated switchgear),electromagnetic waves in GIS affected by oscillatory surge voltage are prone to refraction and reflection,and that will causes the voltage waves superposition may higher than the test voltage required by the standard,endangering GIS insulation.To effectively evaluate the GIS overvohage in case of oscillatory surge,the impulse voltage test method is optimized.The voltage distribution of each GIS node of is obtained by utilizing EMTP simulation software,based on field test parameters,for the simulation of and analysis on the wave process in two different conditions,normal impulse withstand voltage of GIS and flashover of GIS in the test process.The results show that GIS nodes demonstrated similar voltage without noticeable wave process in case of normal oscillatory surge of GIS.However,in case of internal flashover,the end node voltage of GIS branch affected by the cut-off voltage waves would greatly exceed the test voltage,triggering secondary flashover.In consideration of this case,feasible suppression measures are proposed on the basis of simulation calculation and in combination with actual conditions,which provides a technical basis for the field impulse voltage test of 1 100 kV GIS equipment in the future.关键词
1100kV GIS/振荡冲击电压/波过程/仿真计算Key words
1100 kV GIS/voltage unbalance/wave process/simulation引用本文复制引用
康钧,李秋阳,李渊,曲全磊,李江涛,胡梦晨,程鹏,彭洁,王煜杰..1100kV GIS设备振荡冲击试验电压下的波过程仿真计算研究[J].高压电器,2018,54(2):20-25,32,7.
