Voltage control using fuzzy logic for radial distribution network with high penetration of photovoltaic generators

Abstract

Voltage control scheme to enhance the stability for current distribution networks connecting with distributed generation (DG). The increasing demand of energy in recent years transformed traditional distribution grids, which have unidirectional power flow to Active Distribution Networks (ADN), including significant penetration of renewable distributed generators (DGs), such as photovoltaic (PV) modules where the power flow became bidirectional due to the high excess DGs active power that reverses to the power grid. Therefore, this ADN comes with a significant challenge, which is voltage regulation problem. To interconnect PV Generators into distribution systems a robust control approach needs to be adopted, there are different Voltage control scheme can be carried out in variety of methods, such as control by using On Load Tap changers (OLTC), using PV inverters reactive power injection/absorption, real power curtailment process, storage batteries and more. This article proposed a reactive power compensation by PV inverters based on fuzzy logic for voltage control along with the feeders. The control approach was tested and simulated, and it was observed that it can guarantee of maintaining the voltage profile of the distribution network within acceptable range. The MATLAB and Simulink platforms are used to model the system.