Cooperative strategy for distributed voltage control in active distribution feeders

This paper presents a cooperative strategy based on multi-agent system for distributed voltage control in active distribution feeders to prevent out-of-limit voltages, minimize the voltage deviation, and maximize the DG active power output. The multi-agent system is constructed with a main agent and several section agents. Loop communication links are used to improve the reliability of the communication system. The main agent evaluates the feeder voltage states and gives proper instructions to section agents. Objectives of the whole feeder are decomposed to all section agents in this feeder and are realized by distributed voltage control. The effectiveness of the proposed cooperative strategy for distributed voltage control is verified via a case study.