4Forti M, Millanta L, Pellicci G. An Analysis of the Transients Injected into the Power Mains by Inductive-load Disconnections.In: Proceedings of Internation Symposium on Electromagnetic Compatibility. 1991. 487～492
5Groves N. Inductive Load Switching Measurements: Realistic Device Evaluation. In: Third International Conference on Power Electronics and Variable-speed Drives. 1988. 54～57
6Cook C H , Williams K T. Thyristor Assisted On-load Tap Changers for Transformers. In: Proceedings of Fourth International Conference on Power Electronics and Variablespeed Drives. London (UK): IEE, 1990
