摘要
考虑电池储能系统自身容量限制下提升一次频率响应的自适应性,提出一种计及荷电状态(SOC)的电池储能系统一次调频综合控制策略。建立电池储能系统一次调频动态模型,对比分析了虚拟惯性与虚拟下垂控制对电网频率偏差的调节特性。设计考虑SOC的电池储能系统一次调频自适应综合控制策略,并引入一种由综合考虑频率偏差及其变化率的输入系数与计及电池储能系统SOC的反馈系数相结合的自适应因子,输入系数由模糊逻辑控制器自适应调节,反馈系数通过回归函数自适应调节。最后搭建仿真模型进行阶跃和连续负荷扰动工况下不同控制策略对比分析,仿真结果验证了所提控制策略能自适应控制电池储能系统出力,有效提升一次调频效果。
Considering improving the adaptability of primary frequency response under the limitation of BESS(Battery Energy Storage System)capacity,an integrated control strategy of BESS considering SOC(State Of Charge)for primary frequency regulation is proposed.The dynamic model of BESS for primary frequency regulation is established.The regulation characteristics of virtual inertia and virtual droop control on the grid frequency deviation are compared and analyzed.A self-adaptive integrated control strategy of BESS considering SOC for primary frequency regulation is designed,in which a self-adaptive factor of a dynamic combination of input coefficient considering frequency deviation and its rate of change and feedback coefficient considering SOC is introduced.The input coefficients are adaptively adjusted by fuzzy logic controller and the feedback coefficients are adaptively adjusted by regression function.Finally,the simulation model is built to compare and analyze different control strategies under step and continuous load disturbance.The simulative results show that the proposed control strategy can adaptively control the output of BESS and effectively improve the primary frequency regulation effect.
作者
王育飞
杨铭诚
薛花
张宇华
米阳
WANG Yufei;YANG Mingcheng;XUE Hua;ZHANG Yuhua;MI Yang(College of Electrical Engineering,Shanghai University of Electrical Power,Shanghai 200090,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2021年第10期192-198,219,共8页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(61873159)
上海市科技创新行动计划项目(19DZ2204700,20DZ2205500)。
关键词
电池储能系统
一次调频
自适应因子
综合控制策略
荷电状态
battery energy storage system
primary frequency regulation
self-adaptive factor
integrated control strategy
state of charge
