ADMM-Based Distributed Voltage Control Method for Clustered Power Distribution Grid

With the large-scale access of distributed energy resources (DERs), the voltage control of distribution networks faces challenges. In this paper, we propose a hierarchical cluster distributed voltage control method based on the alternating direction multiplier method (ADMM). The method constructs a two-tier decision control architecture to achieve efficient partitioning optimization of cluster resources; adopts a privacy-protecting information interaction mechanism to avoid leakage of sensitive data; and transforms the voltage control problem into multiple local optimization subproblems based on the ADMM to solve the problem in parallel, which reduces the communication pressure and improves the computational efficiency. Through the improvement of IEEE69 node test case verification, the optimized system network loss is significantly reduced, the proportion of distributed PV consumption is increased, and the node voltage operation level is improved, which verifies the correctness and effectiveness of the method.