低碳经济下含风储联合电力系统优化调度

Optimal Dispatching of Power System with Wind Power and BESS under Low-carbon Economy

从低碳经济角度建立了含高渗透率风电的风储联合电力系统优化调度模型。该模型以系统综合运行成本最小为目标,合理评估了常规火电机组运行成本、风电运行成本、储能运行成本及环境成本,并结合电池储能可变寿命特征,综合考虑了放电深度对储能运行成本的影响。以改进的IEEE RTS-96系统及某风电场历史出力数据为例,对含风储联合电力系统优化调度予以研究,结果表明大规模风储并网对电力系统低碳化、清洁化具有积极影响,含风储联合电力系统的优化调度与风电出力特性、风电并网渗透率等因素密切相关。

From the perspective of the low-carbon economy,the optimal scheduling model of power system with high penetration wind power and battery energy storage system（BESS）was established.The model was aimed to minimize the comprehensive operation cost,which is composed of fuel cost of thermal generation,emission cost,operation cost of wind power and battery.Considering the variable characteristic of battery lifetime,the model of battery operation cost was proposed by considering the impact of depth of discharge.The proposed model was applied in the modified IEEE RTS-96 system and an actual wind farm to analyze the optimal operation of the combined system.Computational results demonstrate that the large-scale wind power and BESS have positive influence on the low carbonization and cleaning of the power system.The optimization scheduling of the combined system is closely related to wind power output characteristics and penetration.