为了得到最优风电场功率调度方案,必须掌握任意时刻各风机风速输入值,进而得出各风机出力大小。当风速测量仪出现故障而不能正常工作时,风电机组风速数据将出现错误或缺失。建立线性回归方程,找出每台机组间输入风速的联系便可得到缺失的风速值。当风场发生“空转弃风”时,电网管理部门下达限电指令,风电场输出指定规模的有功、无功功率。将风场内所有双馈异步发电机损耗最低为目标函数,确定有功、无功调度方案。运用MATLAB软件建立风场模型,仿真结果验证了调度模型的可行性。

In order to obtain the optimal power scheduling scheme of the wind farm, the input value of the wind speed at any time must be mastered, and then the output power of each wind turbine was obtained. When the measuring instrument of wind speed fails to work properly, the wind speed data of the wind turbine would be wrong or missing. The equation of linear regression was established to find out the relationship among the input wind speed of every unit which could get the wind speed value. When idling abandoned wind occurd in the wind field,the power command would be issued by the grid management department. And the wind farm would produce the active and reactive power with the specified size. Taking the minimum loss of all doubly fed induction generator in wind farm as the objective function, the scheme of active and reactive power dispatch was determined. The model of wind field was established by software MATLAB, and the simulation results verified the feasibility of the scheduling model.

TM 743

内蒙古自治区高等学校科学研究项目(NJZY14165)