Affect Analysis of Power Grid Energy Quality for Coastal Wind Power Access

Abstract

While the effect on the power grid have become increasingly prominent as the larger proportion of wind power in to the grid. It is needed to study the grid's ability of taking in wind power. One of the main issues which including harmonics, voltage fluctuation and flicker is the effect on energy quality when integrating the wind farms into power grid. The impact is related to the type of the wind Turbines, the wind farm scale, the short-circuit capacity of the grid and the line parameters. The mechanism of voltage fluctuation and harmonics caused by off shore wind farms is studied. The case of Zhejiang off shore wind-farm integration is studied and the index of Power Quality is given. Some effective measures to reduce the voltage fluctuation and flicker and harmonics are put forward, besides, using simulation software PSD-BPA to verify the effectiveness of reducing voltage fluctuation.