Abstract:

Validation of transformer short circuit resistance is very important,so State Grid Corporation has taken active measures in recent years.In this paper,6 500 MVA and 3 200 MVA short-circuit generators are used as test power sources.According to GB 1094.5—2016,the implementation points of 110 kV power transformer sudden short-circuit test are analyzed and the test ability is calculated,including the selection of the output voltage of the intermediate test transformer.The configuration of two different lines is analyzed and compared.This paper puts forward the key points of implementation and the calculation of test capacity,which has guiding significance for the construction and transformation of such laboratories.

Key words: short-circuit generator, power transformer, short-circuit withstand testing, test ability