Simulation Method and System Development for Voltage Control of Distribution Network with Large-scale Photovoltaics

Whether a grid-connected planning scheme of large-scale photovoltaics can satisfy the voltage constraint or not is determined by both the power network and the control system, and the scheme must be verified whether the control system can meet the planning requirements through system simulation or not. Therefore, in this paper, by combining with the latest theoretical results of distribution voltage control for distribution network, a voltage control simulation system based on .NET platform of distribution network containing a large number of photovoltaic power sources is designed and developed, which provides supplementary analysis for planning decision-making of voltage control. The system is developed in Microsoft Visual Studio 2010 platform integrated with the GIS plug-in component MapX. In the end, a modified IEEE33-69 case is used to validate the feasibility of the proposed simulation system.