电力市场环境下风-储混合发电商的偏差电量考核模型

Research on Deviation Electricity Assessment Model of Wind-Storage Hybrid Power Generators in Electricity Market Environment

在含风电现货市场形成前的过渡阶段,风电商的偏差电量考核是完善含风电电力市场建设的过程中不可缺少的环节之一。为了更直观地分析偏差电量考核对风电商经济效益的影响,构建了风电商的偏差电量考核模型,同时采取风-储联合运营的方式来减少风电商需要被考核的偏差电量,并在此基础上建立了储能系统在不同控制模式下风-储混合系统的收益模型。基于混合整数规划技术调用CPLEX优化软件对模型进行求解,对比分析了储能系统对风电商经济效益的影响,并对偏差单位电量考核成本、偏差免考核系数进行敏感性分析。结果表明,在控制储能系统充放电次数的模式下,风-储联合运营能获得更好的经济效益。

As a transitional stage before the formation of the wind power spot market,the assessment of wind power supplier’s deviation power is one of the indispensable links in the process of building a wind power market. In order to more intuitively analyze the impact of the deviation power assessment on the economic benefits of wind power suppliers,the wind power supplier’s deviation power assessment model is constructed,and the wind storage joint operation measures are adopted to reduce the deviation power that wind power suppliers need to be assessed. On this basis,the revenue model of the windstorage system in the energy storage system is constructed under different control modes. On the basis of the mixed integer programming technique,the CPLEX optimization software is used to solve the model. The comparison of the energy storage system on the economic benefits of the wind power supplier is carried out,and the sensitivity analysis of the deviation unit power assessment cost and the deviation exemption evaluation coefficient is carried out. The results show that under the mode of controlling the number of times of charge and discharge of the energy storage system,the combined operation of wind power and storage can obtain better economic benefits.