风电-光伏-抽水蓄能联合优化运行模型建立与应用

Modeling and Application of Combined Optimization Operation of Wind Power,Photovoltaic Generation and Pumped Storage Station

风电、光伏发电出力具有随机波动性,与电力系统用电负荷特性呈现较大差异,对电网调峰能力提出较高要求。抽水蓄能电站运行灵活,启停速度快,配合风电、光伏采取合理的运行方式可以有效缓解系统调峰压力,提高系统对风电、光伏的消纳能力。以风电-光伏-抽水蓄能联合出力曲线跟随系统负荷特性曲线为目标,以抽水蓄能机组发电与抽水工况下的出力特性、上下水库库容、电力电量平衡为约束条件,建立了风电-光伏-抽水蓄能电站联合优化运行模型。对河北省丰宁抽蓄电站调节风光出力的案例进行分析,对风光出力在常规情景与极端情景分别进行了模拟,验证了模型的有效性。

The randomness and fluctuation of wind power and photovoltaic power, which are different from load characteristics of the power system, more peak load regulation capacity of power grid is needed. Because of the flexible operation and fast startstop of pumped storage power station, combined optimization operation of wind power, photovoltaic generation and pumped storage station can effectively reduce the pressure of peak load regulation capacity and improve the integration capacity of wind power and photovoltaic power. This paper builds a model of optimization operation of wind power, photovoltaic generation and pumped storage station. The optimal objective is the combined power curve tbllowing load characteristic curve, and considering output characteristic, reservoir capacity and the balance of electric power as constraint condition. The case of Fengning pumped storage station adjusting wind power and photovoltaic power in Hebei province is analyzed, and the normal scene and extreme scene of the output of wind power and photovoltaic power are simulated, verifying the effectiveness of the model.