Estimation of Charging Voltage in Impulse Current Test
The impulse current test is an important part of the high-voltage tests,which is widely used in the test and detection of surge arresters,surge protective devices and other products.The charging volt-age of the test equipment for a certain impulse current during an impulse current test can be computed relatively accurately by theoretical formulas when the test object is a linear load;however,the determina-tion of the charging voltage proves to be challenging when the test object is a nonlinear load,such as surge arresters.A large amount of historical data and long-term experience,or repeated attempts are al-ways required to determine the appropriate test charging voltage.Therefore,the author proposes a method suitable for estimating the charging voltage of the test equipment during the impulse current test under nonlinear load conditions such as surge arresters and varistors based on theoretical derivation,and verifies it with a variety of resistors.The test results show that this method is relatively accurate.This method is helpful to shorten the debugging time and improve the test efficiency,which also has certain guiding sig-nificance for the development of intelligent and automatic impulse current test equipment.
impulse currentcharging voltagenonlinear loadsurge arresterautomatic control
万方数据
维普
