摘要
针对内蒙古锡林郭勒盟地区冬季气温偏低,±800kV换流站GIS中的SF6气体在低温环境下易液化导致绝缘强度降低的问题,采用母线降气压法,对GIS主回路的绝缘强度进行了试验。试验结果认为将母线压力定为0.24~0.26 MPa,可满足低温运行环境下对GIS绝缘强度的要求,保证GIS安全稳定运行。
The temperatures in winter in Xilin Gol area of Inner Mongolia is very low, SF6 gas of GIS in the ±800 kV converter station is liquefied easily under low temperature,resulted in the decrease of insulation strength. Thus the author adopted the reduced pressure method to test the insulation strength of the GIS bus. Pressure test results showed that the bus pressure keeping from 0.24 MPa to 0.26 MPa could satisfy GIS insulation strength under the condition of low temperature operation requirements, and ensure the safe and stable operation of GIS.
出处
《内蒙古电力技术》
2017年第1期22-25,共4页
Inner Mongolia Electric Power
关键词
GIS
母线
降气压
低温
主回路绝缘
GIS
bus
pressure drop
low temperature
main circuit insulation
