摘要
针对储能电源参与电网辅助调频问题,提出一种以净效益最大为目标的储能电池参与二次调频的容量配置方法。综合考虑实时电量、备用功率和环境效益,构建储能电池全寿命周期的成本-效益计算模型;进而建立以净效益最大为目标,以容量及功率为决策变量,综合考虑实时出力、调频需求约束和荷电状态(SOC)约束的储能电池优化配置模型;基于经验模态分解(EMD)原理,设计一种考虑常规机组爬坡率限制的储能参与二次调频的初始功率指令分配方法;并给出了利用遗传算法辅助求解该优化模型的容量配置方法流程。仿真结果表明,所提出的容量配置方法不仅可以得到能够较好地协调经济效益和调频效果的容量配置方案,同时可得到储能出力功率,该功率可作为储能电池的运行调度参考方案,提高了配置方法的工程实用性。
Energy storage power has brought some problems involved in the auxiliary frequency regulation, aiming at the problems, a capacity allocation method of BESS in secondary frequency regulation with the goal of maximum net benefit is proposed. Considering the real-time electricity, reserve power and environmental benefit, the cost-benefit calculation model of full life cycle of BESS is constructed. Then taking the maximum net benefit as the goal, the capacity and the power as the decision variables, and considering the real-time output, the frequency regulation demand constraint and the SOC boundary, the optimization configuration model of BESS is established;Based on the principle of empirical mode decomposition (EMD) and considering the limitation of ramp rate of conventional units, this paper designs an initial power instruction allocation method for BESS in secondary frequency regulation;Also this paper gives the flow chart of capacity allocation method assisted by genetic algorithm. The simulation results show that the proposed capacity allocation method can not only obtain the capacity allocation scheme that can coordinate the economic benefit and frequency regulation effect, but also obtain the energy storage output power. The output power can be used as a reference scheme of BESS, which improves the engineering practicability of the configuration method.
作者
汤杰
李欣然
黄际元
徐飘
何聪
Tang Jie;Li Xinran;Huang Jiyuan;Xu Piao;He Cong(College of Electrical and Information Engineering,Hunan University,Changsha 410082 China;State Grid Hunan Electric Power Corporation Limited,Changsha Power Supply Company,Changsha 410015 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2019年第5期963-972,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(51477043)
湖南省科技重大专项(2016GK1003)
国网湖南省电力有限公司科技项目(5216A1170002)资助
关键词
储能电池
二次调频
成本-效益
容量配置
优化模型
Battery energy storage system
secondary frequency regulation
cost-benefit
capacity allocation
optimization model
