Design of impulse generators for different front and Tail Resistors in Impulse voltage testing of power transformers

The performance of the power system depend on the reliability of its components such as Transformer, transmission lines, circuit breakers etc. National and international standards stipulates a lighting impulse voltage of 1.2/50 when impulse voltage testing electrical equipments. The high voltage Impulse test the with stand capability of power transformer. Then the problems associated in practical wave generation will be stated which solution are to be improved by the proposed method using PC Tools. Then a simulation result will be presented for use in our practical lab test and the range of desired parameter should be compared .The paper show how to simulate the basics impulse voltage testing of power transformer and to practice analyzing the test result. The main objective of the paper is to develop an understanding of impulse voltage generator circuit parameter effect on the standard output wave forms. The simulation circuit can be used to find out the desired front time, tail time and peak voltage for variation of different front and tail resistor. The whole system are studied in the PSpice software.