中文摘要：

为了满足电网对风电场功率变化率的要求,提出了一种改进的风电场储能容量优化配置方法。该方法计及电池使用寿命以及由此带来的电池更换成本,能够更加精确地反映风电场寿命周期内的储能系统经济性。以风电场寿命周期内储能系统初始购置及更换总成本最低为优化目标,建立了储能容量优化配置模型;将电池寿命和运行控制策略纳入优化模型;并将计及风储联合长期运行的优化模型视为黑盒函数,采用网格自适应直接搜索算法对该黑盒函数进行搜索求解,得到满足风电并网相关技术规定的最佳配置容量。在算例分析中采用实际风电场1 a发电数据进行仿真计算,对比了改进前后优化方法对优化结果的影响,采用改进后的优化方法,风电场寿命周期内储能投资总成本可以降低15%~20%,验证了所提模型及其求解方法的有效性。

英文摘要：

In order to meet the requirements of power grid for the power ramp rate of wind farm, we proposed an improved optimization method of energy storage capacity in wind farm. Taking into account battery life and the battery replacement costs, this method could accurately reflect the economics of energy storage system in wind farm life cycle. Storage capacity optimization model, which took the total costs of initial purchase and replacement as the objective function, was established. Battery life and control method would be incorporated into the optimization model. By taken long-running of wind-storage combined into consideration, the optimization model was regarded as a black box function. We selected mesh adaptive direct search （MADS） as the solution method, and the best configuration capacity was ob- tained to meet the technical requirements of wind farm. An accurate storage capacity was given that could meet the power ramp rate of wind farm. In the numerical simulation, with the comparative analysis of the results in different optimization method by using the actual wind farm simulation data generation in a year, the effectiveness of the proposed model and method was validated. Using the improved optimization method, energy storage total investment in wind farm life cycle can be reduced by 15%-20%.