Calculation of Pressure Rise and Analysis of Shell Tolerability of 110 kV GIS Encountering Internal Fault Arc
With the continuous development of China's power industry in recent years,gas insulated switchgears (GIS) have found wide application in power systems.However,the high temperature,high voltage and shell damage caused by GIS internal fault arc will pose a huge threat to the safety of equipment,buildings and people.The analysis of GIS internal fault arc can save a lot of testing costs and shorten the development period of new products.In this paper,the pressure rise of 110 kV GIS under the condition of internal fault arc is calculated and the shell tolerability is analyzed.The results show that the design of each component unit meets the performance requirements,and there is no possibility of shell breakage.