考虑风光出力季节性波动的储能容量配置

通过配置储能可以解决高比例可再生能源并网时的弃电和功率波动问题，但现阶段储能成本较高，难以大规模推广应用，且现有研究在进行储能规划时，多聚焦于单一季节下的储能最优容量，而忽视了风电、光伏出力季节性波动对储能规模的影响。为解决上述问题，本文提出了一种考虑可再生能源出力和负荷需求季节性变化的储能优化配置方法。采用等效全循环次数核算储能投资运行成本，并利用期望持续放电时间处理功率和容量的相关性，从储能全生命周期收益和可再生能源利用率的角度对储能的容量和功率进行配置。仿真结果显示，与追求储能收益最大和采用单一典型日进行储能配置相比，本文所提方法能够在保障储能经济性的同时，进一步提升储能对可再生能源的消纳作用。

Energy storage capacity configuration considering seasonal fluctuation of wind and photovoltaic output

Abandonment and power fluctuation led by a high proportion of renewable energy connected to the grid can be solved by configurating energy storage system. However, the cost of current energy storage is too high to be applied on a large scale. In addition, a sole focus on the optimal capacity of energy storage in a single season accompanied by ignoring the impact of seasonal fluctuations of wind power and photovoltaic output on the scale of energy storage can be spotted in most researches. Therefore, an optimal configuration method of energy storage system that also works in seasonal fluctuation of renewable energy output and load demand is proposed in this paper. The investment and operating costs of energy storage system is calculated by the number of equivalent discharge cycles. Expected continuous discharge time is used to deal with the correlation between power and capacity. Thus, the capacity and power of energy storage system from the perspective of life cycle revenue and renewable energy utilization shall be properly configured. Compared with that pursuing of maximum energy storage system revenue and referring to a single typical day, the cost can be maintained at fair levels and the absorbing effect on renewable energy of the storage system be further enhanced through the method proposed in this paper, according to simulation results.