CHEN Changyu. Calculations of Switching Impulse Voltage Test Waveform for Power Transformers[J]. High voltageapparatus, 2016, 52(1): 27-29+35. DOI: 10.13296/j.1001-1609.hva.2016.01.005.
Calculations for power transformers during high voltage switching impulse tests by electromagnetic induction are discussed. The objective of this paper is to introduce a calculating method for the front wave of switching impulse. 5-order equations for the electric circuit are developed using Laplace transform by means of computers. These equations can calculate the voltage waves and amplitudes both on primary and secondary sides.Therefore
the original short impulse on the primary wave and the virtual front time of the high voltage testing wave can be obtained.