摘要
含高比例可再生能源接入的新型电力系统中,可再生能源发电量存在季节分布不均衡的问题,给系统电力供应稳定性带来挑战。作为一种新兴的灵活调节资源,季节性储能可以实现长时间、大规模的能量转移,具有电量季节性波动平抑作用。在规划阶段合理配置季节性储能可以保证月间电量均衡,减轻系统保供压力。提出了一种季节性储能需求测算方法,首先,基于月均气象统计信息,建立可再生能源季节性发电量的季节分布特性模型;其次,以系统年均综合成本最小为目标函数,考虑各类型电源运行约束、储能规划/运行约束以及年/月电量平衡约束,建立季节性储能需求测算模型,实现了季节性储能容量需求测算;最后,采用中国南方某省区2050年规划方案作为算例,验证了所提方法的有效性。
With a high penetration of renewable energy,the new power system is facing the challenges of uneven seasonal power supply caused by renewable energy,and the stability of the power supply in the system is threatened.As a new flexible regulation resource,seasonal energy storage can realize long-term and large-scale energy transfer,which can be used to balance the seasonal power outputs.Reasonable allocation of seasonal energy storage at the planning stage can ensure the balance of monthly electricity and reduce the pressure on the power supply.In this paper,a planning method for seasonal energy storage is proposed.Firstly,based on the monthly meteorological information,the seasonal model of renewable energy is established.Then,by taking the minimum annual comprehensive cost of the system as the objective function and considering the operation constraints of various types of power supplies,energy storage planning/operation constraints,and annual/monthly power balance constraints,the seasonal energy storage calculation model is established to calculate the seasonal energy storage capacity.Finally,the 2050 planning scheme of a province in South China is used as an example to verify the effectiveness of the proposed method.
作者
武震
霍彦达
张翼
黄巨龙
戴剑锋
WU Zhen;HUO Yanda;ZHANG Yi;HUANG Julong;DAI Jianfeng(China Electric Power Planning&Engineering Institute,Beijing 100120,China;China Energy Engineering Group Gansu Electric Power Design Institute Co.,Ltd.,Lanzhou 730050,China)
出处
《中国电力》
CSCD
北大核心
2023年第8期40-47,共8页
Electric Power
基金
中国能建股份公司揭榜挂帅项目(电化学储能系统集成技术与关键装备研发,CEEC2021-KJZX-09)。
关键词
新型电力系统
可再生能源
季节性储能
需求测算
季节性电量调节
new power system
renewable energy
seasonal energy storage
capacity planning
seasonal energy transfer
