考虑峰谷电价的风电－抽水蓄能联合系统能量转化效益研究

建立了考虑峰谷电价的风电-抽水蓄能联合系统和能量转化效益的定量评估模型，研究了风蓄联合系统中抽水蓄能电站对风电移峰填谷的影响，仿真算例验证了所建立模型的有效性。结果表明：在峰谷电价政策下，风蓄联合系统可将低谷时段的廉价电能转化为高峰时段的珍贵电能，取得良好的经济效益；同时还能有效地平滑风电场输出功率，降低并网风电的波动性。

Research on Energy Shifting Benefits of Hybrid Wind Power and Pumped Hydro Storage System Considering Peak-Valley Electricity Price

Combined operation of hybrid wind power and pumped hydro storage (WP-PHS) system can realize peak load shifting and convert cheap valley-energy to expensive peak-energy, reduce spinning reserve and obtain good economic benefits. Considering peak-valley electricity price, a quantitative model to evaluate the energy shifting benefits of hybrid WP-PHS system is built. The influence of pumped storage power station on peak load shifting by wind power generation is researched, and case simulation results validate the effectiveness of the built model. Simulation results show that under the peak-valley electricity pricing policy the hybrid WP-PHS system can realize peak load shifting and convert cheap valley-energy to expensive peak-energy, reduce spinning reserve and obtain satisfied economic benefits. Meanwhile, the output power of wind farm can be smoothed effectively and voltage fluctuation of wind power can be reduced.