促进新能源外送的梯级水电-风电联盟备用效益均衡模型

A Cascade Hydropower-Wind Power Alliance Backup Benefit Equilibrium Model to Promote New Energy Transmission

为减小风电出力不确定性对系统造成的影响,针对梯级水电-风电的合作运行展开研究。为促进大规模风电外送,提出一种基于纳什谈判的梯级水电-风电联盟备用效益均衡模型。首先,在考虑风电不确定性的情况下,考虑外送断面限制,以风电上网电量最大为目标构建风电-梯级水电联合运行模型。其次,基于纳什谈判理论,构建梯级水电-风电联盟增量备用效益均衡模型,实现联盟内部增量备用容量和增量备用容量价格优化,确保联盟稳定;然后,在梯级水电联盟内部对增量备用容量进行优化分配。仿真结果表明通过梯级水电-风电的合作运行,可以较大幅度提高各主体的运行效益以及合作联盟的整体效益。

In order to reduce the impact of wind power output uncertainty on the system,this paper studies the cooperative operation of cascade terraced hydropower-wind power. A Nash negotiation-based standby efficiency equilibrium model of the cascade hydropower-wind power alliance is proposed to promote large-scale wind power outflow. Firstly,the wind-hydropower coalition operation model is constructed with the objective of maximizing on-grid electricity of wind power,and with the wind power uncertainty and the outward transmission cross section limitation considered. Secondly,based on the Nash bargaining theory,an incremental reserve benefit equilibrium model for the terraced hydropower-wind power alliance is constructed to realize the optimization of incremental reserve capacity and incremental reserve capacity price within the alliance to ensure the stability of the alliance. Thirdly,the allocation of incremental reserve capacity is optimized within the terraced hydropower alliance. Finally,the simulation results show that the operational efficiency of each entity and the overall efficiency of the cooperative alliance can be substantially improved through the cooperative operation of the cascade hydropower-wind power.