The electricity already occupied the inestimable status in people's regular production and life.，specially in factory and enterprise. Without the electricity, the people cannot be engaged in any production activity. Therefore how carries on the factory designs for the power distribution as well as the factory for the electrical power distribution system optimization has now supplied the power distribution aspect the important topic. The traditional power supply way already could not follow the footsteps of the modern society fast development.
Along with the social productive way transformation and the renewal, the social productive forces forward developed unceasingly, the people already unceasingly invented and make the countless each performance superior factory for the power distribution spare part, thus enabled the factory to occur earthshakingly for the electrical power distribution system design changed. After the people have used these advanced spare parts, not only the factory obtained the innovation for the power distribution way, moreover its quality also obtained the unprecedented enhancement. Therefore, I begin to design the factory has the practical significance matter extremely for the electrical power distribution system by myself.
Keywords ：the factory for the electrical power distribution system; design optimal；distribution devices
