Abstract
AbstractIn the case of Extra High Voltage and Ultra High Voltage circuit breaker, almost all of testing laboratories adopt the single-phase testing method for verifying the performance of capacitive breaking capability, based on IEC 62271-100 Annex O, due to the limitation of testing facilities. For dead-tank breaker, the tests for the insulating properties of phase-to-enclosure are recommended as a non-mandatory testing item. However, IEC MT36 has proposed the change of standard to specify as a mandatory in its next version planned in 2016. The peak of recovery voltages, occurring just after interrupting the some type of capacitive currents, arrives at different values on supply and load sides. With the technical background, the new capacitive current breaking test circuits are proposed to fulfill the next edition of IEC 62271-100 to be newly published. This paper illustrates the testing methods and simulation results for the single phase test circuits of capacitive current breaking, applicable to the ci...
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