An intelligent control for the DG interface to mitigate voltage flicker

Distributed generation (DG) is used widely in modern distribution systems. This paper proposes a novel functionality of the interface between DG and the utility network to mitigate the voltage flicker and regulate the voltage at the point of common coupling (PCC) along with its main function of controlling the power flow. The voltage leveling is achieved by tracking its envelope utilizing an intelligent control based on adaptive linear neuron (ADALINE). One of the advantages of the proposed control is its insensitivity to the parameter variation, which is vital for distribution system applications. Extensive simulation of the proposed DG interface is conducted to evaluate the performance of the proposed control algorithm for multifunction operation.