风电-抽水蓄能联合系统的优化运行研究

抽水蓄能和风力发电互补系统可以有效抑制风电功率的波动,为电网提供优质电能.为了确定各时段的风力发电机和抽水蓄能电站的出力状态,实现优化控制,文中从经济效益、电能质量和综合效益3个角度建立了优化模型,并利用遗传算法进行仿真计算.仿真结果表明：经济效益模型可以实现最大经济效益运行,对风电波动有一定抑制作用;电能质量模型可以使互补系统的输出功率平滑,输出功率标准差很小,但是经济效益会下降；综合效益模型考虑了电能质量的约束条件,在满足电能质量要求的前提下,实现最大经济效益运行,是综合考虑电能质量和经济效益后的一种优化运行策略.

Research on Optimal Operation of Hybrid Wind Power and Pumped Hydro Storage System

The hybrid wind power and pumped hydro storage system can effectively restrain wind power fluctuations and provide high-quality power for the grid. In order to deter- mine the output status of wind turbines and pumped storages in different periods and achieve optimal control, optimization models are established in this paper from viewpoints of economic benefits, power quality and integrated benefits, and simulations are done in the genetic algorithm. The simulation results show that： the economic model can achieve the maximum economic benefit and to some extent, restrain the fluctuation of the output power; the power quality model can operate with smooth output power and small standard deviation, but at the expense of the economic benefit; the integrated model, with the constraints of the power quality considered, can achieve the maximum eco- nomic benefit on the premise of guaranteeing the power quality, and it is an optimal operation strategy with consideration given to both the power quality and the economic benefit.