Research on optimal stationing strategy of distribution automation terminals based on power supply reliability analysis

High power supply reliability is the target of modern distribution network development and distribution automation system is an important method to improve the power supply reliability of distribution network. There exist big differences between the distribution network structure and power supply reliability of different distribution region, thus we should use different stationing modes of distribution terminals based on actual conditions to reach the harmony and consistency of economy and practicability. This paper analyzes the fault processing mode of distribution automation system for Shanghai A+ region. It also builds a simplified calculation model of power supply reliability considering the distribution automation system, and then uses typical 10kV grids to analyze. It calculates the power supply reliability in different terminal stationing modes and considers other related factors comprehensively to propose the optimal stationing strategy of distribution automation terminals. Related research achievements have been contained in the “Technical Guide for Distribution Automation System Planning and Designing for State Grid Shanghai Municipal Electric Power Company” and will provide good guidance for planning and constructing distribution automation systems in Shanghai and other areas.