A Fully Distributed Reactive Power Optimization and Control Method for Active Distribution Networks

摘要

This paper proposes a fully distributed reactive power optimization algorithmthat can obtain the global optimum of non-convex problems for distributionnetworks without a central coordinator. Second-order cone (SOC) relaxation isused to achieve exact convexification. A fully distributed algorithm is thenformulated corresponding to the given division of areas based on an alternatingdirection method of multipliers (ADMM) algorithm, which is greatly simplifiedby exploiting the structure of active distribution networks (ADNs). The problemis solved for each area with very little interchange of boundary informationbetween neighboring areas. The standard ADMM algorithm is extended using avarying penalty parameter to improve convergence. The validity of the method isdemonstrated via numerical simulations on an IEEE 33-node distribution network,a PG&E 69-node distribution system, and an extended 137-node system.