A Test Circuit for Producing Different TRV Waveforms with Special Regard to their Initial Shape

In order to test high voltage circuit breakers in high power stations, efforts are being made to create a test circuit that will produce the same conditions as in actual power systems. To simulate these conditions, resistors in series and in parallel with a capacitor have been interposed in the test circuit to represent the system encompassing the breaker. Recent studies have revealed that capacitance, near the circuit-breaker, can have considerable influence on the breaking capacity of these breakers. This paper is concerned with the influence of parallel capacitors on test circuits and gives the parameters for accurate control of the initial shape of the TRV.