SIMULATION OF IMPULSE VOLTAGE TESTING OF POWER TRANSFORMERS USING PSPICE
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 2015, Vol 4, Issue 1
Abstract
Impulse generator is an indispensible high voltage set. It simulates the voltage due to lightning and switching surges and used for testing of insulation of various electrical equipments like transformer, insulators etc. The standard impulse waveform could be used to test the strength of electrical equipments against the lightning. Lightning characteristics and standard impulse wave form are related to each other. But the lack of realization about relation between them would make the solution to produce better protection against lightning surge becomes harder. Lightning impulse voltage and standard impulse voltage (1.2/50μs) are similar to each other. So, to achieving better protection of high voltage equipment study of impulse voltage waveform is very important. In this paper comparison has been made between standard impulse waveform obtained by simulating Marx impulse generation circuit in Pspice software and practical Marx circuit. This impulse waveform can be used to test the capacity of electrical equipment against the lightning and switching surge voltage.
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