A TRANSFORMATION SUBSTATION

摘要

The advanced transformation substation or center of the present invention is derived from the application of the invented unique interconnection scheme of the equipment included therein. This involves the application of a medium voltage breaker which is interconnected with the other equipment or switches in such a way that the main power flow of the loop is channeled only through this breaker. All the other switchgear needs to break only the distribution transformer load current with the consequence of enabling the elimination of SF6 and of using mineral or silicone oil, esters or solid insulation instead. Additionally, the improvement of the reliability of the cable network is accomplished by introducing automatic sectionalizing points and the elimination of the HRC fuses by having the vacuum breaker protect the distribution transformer. The invention relates also to a system for protecting, automatically sectionalizing and reconfiguring a medium voltage distribution line against electrical faults, said system making use of said transformation substations interconnected to each other and optionally to conventional transformation substations.