Network planning method for distribution systems based on planning analytical foundation

Network planning is one of the important content in the distribution network In order to increase the reliability of power supply, to ensure voltage quality, and to reduce power loss, network planning method for distribution systems is proposed to form radial network automatically based on the planning analytical foundation. According to the load moment, the method is presented to partition power supply area, and voltage drop of each user in the area which is limited in allowable bound. Under taking account of voltage drop, line transfer capabilities, and physical restrictions, the distribution network framework is formed automatically, and the functions are accomplished to automatic routing and linking hand in hand, which are in accordance with rules of minimum power loss, shortest path method, and minimum load moment. The real example results show that associated load data are inputted easily, the initial distributing map is formed automatically, and network framework is accomplished automatically. Also based on the planning analytical foundation, the results can be showed, which is easy to analyze and employ planning scheme.