摘要
针对由全钒液流电池、磷酸铁锂电池及超级电容3种储能介质组成的混合储能系统,提出一种针对不同储能介质特性进行混合储能系统自适应功率分配及调节优化的风电功率波动平抑控制策略。通过二阶低通滤波算法进行针对不同储能介质特性的自适应功率分配及调节,同时考虑系统后续运行需求,进行基于SOC反馈的分段功率控制优化调整,使储能系统工作在正常区间的同时为后续运行时段提供一定的充放电空间,最后经过储能系统极限约束修正,实现对风电场输出功率波动的有效平抑。通过在储能型风电场项目中的应用实验,验证了此控制策略的有效性。
Aiming at the hybrid energy storage system consisting of three vanadium flow batteries,lithium iron phosphate battery and super capacitor energy storage technology,a wind power fluctuation mitigation control strategy based on adaptive power allocation for hybrid energy storage system was proposed.The second-order low-pass filtering algorithm was used to adaptively allocate and adjust the characteristics of different energy storage systems.Considering the subsequent operation requirements of the system,the segmentation power control optimization adjustment based on SOC feedback was performed to make the energy storage system work in the normal interval and provides a certain charging and discharging space for the subsequent operation period.And finally,through the limit constraint correction of the energy storage system,the effective mitigation of the output power fluctuation of the wind farm was realized.The effectiveness of this control strategy was finally verified by the application experiments in the actual wind farm energy storage system.
作者
李志强
李赛
王凡凯
LI Zhiqiang;LI Sai;WANG Fankai(Beijing Huadian Tianren Electric Power Control Technology CO.,Ltd.,Haidian District,Beijing 100039,China)
出处
《现代电力》
北大核心
2020年第6期646-653,共8页
Modern Electric Power
关键词
控制策略
混合储能系统
波动平抑
低通滤波
功率分配
control strategy
hybrid energy storage system
fluctuation mitigation
low pass filtering
power allocation
