Intensive measures to improve short circuit withstand ability of transformers

Based on the calculation of ampere turn distribution and short circuit mechanical force of 110 kV H type transformers, the structural features of H type transformers newly manufactured by Guangzhou Electric Power Equipment Plant and the intensive measures for improving their ability to withstand short circuit impact are described with suggestions on relative problems put forward. The method to strengthen the on stream transformers on site is introduced and analyzed as well.