Hierarchical and Distributed Voltage Control with Regional Adaptability in Active Distribution Networks

Due to the fact that the centralized control cycle of active distribution network is long and the response speed of on\|load transformer tap is slow, it is difficult to effectively solve such problems as the local voltage off\|limit. In this paper, a new hierarchical and distributed voltage control method is proposed. Based on multi\|agent system architecture, the distributed grid is divided into several local control zones (LCZs) that their sizes are adaptive to different system state, and the adjustment ability of reactive power output for distributed generation (DG) is used to realize distributed autonomous voltage control. In addition, the comprehensive voltage control of distribution network is realized by combining with adjustment method of traditional transformer in the decentralized control framework. In the end, the effectiveness and validation of proposed method is verified based on IEEE-33 node test distribution system.