Test and Analysis of the Thermal Stability of 500kV Disconnector
Thermal stability is one major performance parameter of disconnector.In order to determine the thermal stability under steady and transient load,a large-current test device is used to test a 500kV disconnector under different load conditions in this paper.The relationship between device temperature changes and applied time is explored.The test and analysis results show that the current and time meet the empirical relationship under steady load current condition,and that temperature increase and load time meet the empirical relationship under transient load current condition.