Distributed Optimal Voltage Regulation for Distribution Networks with DGs at the Energy Delivery Grid Edge with Limited Information Exchange

An algorithm for distributed optimal voltage regulation of distribution networks with distributed generators (DGs) at the grid edge is proposed in the paper. We first introduce a distributed recursive algorithm to estimate the sensitivity parameters of the network without needing any information exchange between the edge computing devices. Then, we cast the distributed voltage control problem as a distributed linear program which can be solved efficiently on edge computing devices to minimally adjust DGs generations. The algorithm is tested with EPRI Test Ckt24 and the results are compared with the situation when data exchange is available between the edge devices.