8th International Conference on Advanced Power System Automation and Protection (APAP2019)

1140 / 2019-06-28 09:32:22

Principle and Optimization of Suppression of Inrush Current in Transformer

inrush current,phase selection control circuit breaker,control strategies,dynamic simulation experiment

Drowning the no-load closing process, transformer will produce a magnetizing inrush current which will make the transformer relay malfunction and make adversely affect to the transformer equipment and power grid. Relative to a variety of external measures limiting the inrush current, the phase selection switch technology is more effective to reduce inrush current. The author analyzed inrush current by theory and dynamic simulation experiment, By comparing different control strategies of phase selection, the suppression effect of this strategy on inrush current is observed and evaluated.