System and method for carrying out short-time induction voltage withstand test on extra-high voltage alternating-current transformer

The invention belongs to the field of voltage withstand tests of transformers, and relates to a system and a method for carrying out a short-time induction voltage withstand test on an extra-high voltage alternating-current transformer. The test system comprises a variable-frequency power supply VF, an intermediate transformer T, a compensation reactor L, a capacitive voltage divider Cf and a voltage regulation compensation transformer, the voltage regulation compensation transformer comprises a voltage regulation transformer and a compensation transformer, the output end of the variable-frequency power supply VF is electrically connected with the input end of the intermediate transformer T, and the output end of the intermediate transformer T is electrically connected with the voltage regulation compensation transformer. A compensation reactor L and a capacitive voltage divider Cf are connected in parallel between the intermediate transformer T and the voltage regulation compensation transformer, and the vol