Study On The Impacts On Regional Distribution Network Connected With Huangyuan Wind Farm

With fossil energy consumption,global energy crisis continue to simmer,the deterioration of the environment problems intensified,resulting in growing demand for renewable energy such as wind power,and the wind power development has intensified.And large-scale wind farm construction brought the problem is that the fluctuation and intermittence of wind power influent on the regional power grid are more prominent.To solve this problem,this paper studies the Lishui Yunhe Huangyuan wind farm grid connected operation problems,in-depth analysis of the grid voltage stability,the short-circuit current and the transient stability problem of Lishui power grid,provide theoretical support for the operation of wind farms.The main contents of this paper are as follows:(1)The theoretical analysis of the Influence of Wind Farm and the related research status at home and abroad.(2)Research on the Lishui an Yunhe grid architecture,load and other engineering background information,then according to Huangyuan wind farm installed capacity and the requirements of the grid,the relevant parameters on the line and the capacity of main transformer are selected.And the desi gn of the 110 k V wind farm substation principle diagram.(3)In order to ensure the reliable operation of wind farms completely,reactive power compensation scheme of wind farm is designed,and analysis the Lishui grid flow distribution of winter load and the minimum load operation mode,and checked by N-1 mode and Large Unit ’s Cutting Operation Mode.(4)Analysis the structure of each substation short circuit current of grid when Huangyuan wind farm connects to grid,provide check basis of relay protecti on and the thermal stability of components.(5)Through the provision of transmission lines three-phase short circuit,large units off the net and wind farm dynamic removal and other fault types,analyze the transient stability operation of Lishui electric power system after Huangyuan wind farm connected to grid,to prove that the Lishui power grid is stable under various types of fault when Huangyuan wind farm is connected.