Research on a New Multi-station Integrated Topology and Coordinated Control Strategy

Abstract

A new multi-station integrated system scheme is proposed to solve the problems caused by the large-scale access of distributed generation to the distribution network and the accelerated installation of electric vehicle charging piles, such as the imbalance of feeder power, the heavy overload of transformer, and the difficulty of transmission and distribution capacity expansion. The stable operation, coordinated control strategy and different working scenarios of the proposed topology are analyzed. This paper analyzes the small signal stability of the proposed multi-station integrated system, analyzes the operation mode and control mode of each converter in the proposed topology, and proposes a coordinated control strategy. Finally, based on RT-LAB OP5600, the working models of multi-station integrated system in different operation scenarios are built, and the effectiveness of the proposed multi-station integrated scheme topology and control strategy is verified by real-time digital simulation.