Design of Active Distribution Network Voltage Regulation based on Two-layer Mixed Integer Optimization

With the vigorous development of distributed new energy generation, the power network is transitioning from a traditional centralized unidirectional power flow to the active distribution network containing many controllable sources. The voltage fluctuations caused by the intermittent nature of renewable energy generation sources will cause the deterioration of power quality. In this paper, we propose a voltage regulation strategy based on two-layer mixed integer optimization for enhancing the energy management system of microgrids. Based on the sum of squared deviations and the net load evaluation, the regulator parameters are optimized using a two-layer structure to achieve systematic voltage regulation for active distribution grids with controllable sources. Simulation experiments on an IEEE 33 distribution network model containing 6 photovoltaics reveal that the proposed method is able to complete the control design process of the active distribution network based on quantitative information, and to accurately identify and evaluate different control structures.