A new scheme of arcless onload voltage regulation using high power electronic switch is put forward based on the relative technology experiences. According to the development of power electronics technology
two schemes of arcless on-load voltage regulation for high voltage and low voltage distribution transformers are introduced respectively. The waveforms of simulation experiment are also given. On-load voltage regulation control system with monolithic computer as the core for the scheme is built and the experiment on low voltage model proved that arcless onload voltage regulation could be carried out quickly and reliably by its control system in the new scheme.