含储能的高比例风电系统优化运行模型

Optimal Operation Model of Wind Power System with High Proportion of Energy Storage

针对电力系统因风电渗透率不断提高而导致的功率平衡难以实现的问题,提出一种考虑需求响应及碳捕集的含储能高比例风电系统优化运行模型。首先针对电价型、激励型负荷建立了负荷侧需求响应模型,同时建立了碳捕集电厂数学模型及储能模型;在此基础上进一步建立了以系统总成本最低为目标的优化运行模型,并分析了碳捕集价格对系统成本的影响及需求响应对负荷曲线的优化作用,验证了储能对新能源不确定性的积极调控作用,量化了不同比例风电给系统带来的失负荷方面的影响。在MATLAB环境下通过YALMIP工具箱调用Gurobi求解器求解模型。算例结果表明,所提优化模型缓解了高比例风电导致的功率不平衡问题、降低了系统单位供电成本,可在保证系统安全稳定运行的同时降低系统运行总成本。

Aiming at the problem that the power balance of the power system is difficult to achieve due to the continuous increase of wind power penetration rate,an optimal operation model of wind power system with high proportion of energy storage considering demand response and carbon capture is proposed.Firstly,the load-side demand response model,the mathematical model of carbon capture power plant and the energy storage model are established for electricity price and incentive loads.On this basis,the optimal operation model of wind power system with the goal of minimum total system cost is further established,and the impact of carbon capture price on system cost and the effect of demand response on load curve optimization are analyzed.It verifies the positive role of energy storage on the uncertainty of new energy,and quantifies the problems such as load loss caused by different proportions of wind power to the system.In the MATLAB environment,the Gurobi solver is called through the YALMIP toolbox to solve the model.The calculation example results show that the proposed optimization model alleviates the power imbalance problem caused by high proportion of wind power,reduces the unit power supply cost of the system and the total system operation cost while ensuring the safe and stable operation of the system.