Research on Load Sharing Method of Islanding Micro-grid

Abstract

In islanding mode micro-grid, the line impedance causes the nonlinear load sharing difference. When the line impedance is very large, it will cause the micro-source overloaded or even breakdown. In this paper, the nonlinear load sharing principle is analyzed based on equivalent circuit, the key parameter influencing load sharing is concluded, then the control strategy to improve load sharing performance is presented. The experimental results of two micro-sources are presented. The results demonstrate the effectiveness of the proposed method.