电池储能系统参与电网削峰填谷实用算法

Practical algorithm applied in peak load shifting of battery energy storage system in power grid

针对能源互联型微网储能设备的优化配置问题,构建一种考虑跨季节储气的多能存储系统的配置模型,提出了包含储电设备、储热设备、储气设备和P2G的容量配置方法。利用模糊均值聚类(FCM)对风光出力进行预处理,划分为多个概率场景以降低运算复杂度。综合考虑电-气-热-冷平衡、机组爬坡约束、储能约束和天然气供气限制,以全年经济性为优化目标,对比分析了跨季节储气模式和无储气模式的储能配置与经济性。并讨论了天然气成本对系统储能优化配置的影响。结果表明,考虑跨季节储气的多能存储系统经济性更优,能有效缓解冬季的供气压力,并促进非冬季的新能源消纳。

In view of the optimal configuration of storage devices for energy internet micro-grid,this paper constructs a configuration model of a multi-energy storage system considering cross-season gas storage,which proposes a capacity configuration method including electricity storage equipment,heat storage equipment,gas storage equipment and P2G.The wind and photovoltaic output are preprocessed by FCM and divided into multiple probability scenes to reduce the computational complexity.In this paper,the electric-gas-heat-cold balance,unit climbing constraint,energy storage constraint and natural gas supply restriction are comprehensively considered.The annual economic efficiency is the optimization goal,and the cross-season gas storage mode and the non-gas storage mode are compared and analyzed.This paper also discusses the impact of natural gas costs on the optimal configuration of system energy storage.The results show that the multi-energy storage system considering cross-season gas storage is more economical,which can effectively alleviate the supply pressure in winter,and promote non-winter new energy consumption.