Distributed Coordinated Control Strategy for Multi-Terminal MMC DC Distribution Networks

A DC distribution network containing multiple MMC converter stations requires coordinated operation among multiple stations to ensure DC bus voltage stability and system power balance. Based on the estaishment of a complete mathematical model for the MMC converter station, this paper introduces multi-agent theory to construct a distributed coordinated control method. Relying on a sparse communication network established between converer stations, each station acts as an independent agent to achieve autonomous decision-making and collaborative control through information exchange, thereby realizing the preset power distribution objectives among stations. On the AC gri coordinated method adaptively provides proportional reactive power compensation based on the rated capacity and operating status of each converter station. To verify the effectiveness of the proposed method, a simulation platform was esd to conduct verification tests. The results indicate that this method can accurately achieve core objectives such as DC bus voltage stability, reasonable power distribution among converter stations, and reactive power compensati the AC side.