考虑储能系统SOC的双卡尔曼滤波风电功率波动平抑策略

doi:10.3969/j.issn.2097-0706.2023.02.008

摘要/Abstract

摘要：

风储联合发电系统中储能系统的波动功率平抑能量管理策略会影响储能设备寿命以及实际并网功率，基于双卡尔曼滤波，提出了一种考虑储能荷电状态（SOC）的风电功率波动平抑方法。利用双卡尔曼滤波器分别获取目标并网功率信号，根据不同储能功率平滑信号获取优化储能功率控制指令，当电池储能SOC超出正常运行范围发生正向、反向偏移时则输出对应优化后的储能平抑功率信号，调节风电并网目标功率。仿真分析结果表明，该方法可有效改善储能SOC，降低风电功率波动率，提高储能系统经济型及风电并网电能质量。

关键词: 风储联合发电系统, 双卡尔曼滤波, 储能系统, 荷电状态, 风电, 并网, 功率波动

Abstract:

Since the power fluctuation mitigation strategy for the energy storage system in a wind power-energy storage hybrid system can affect the service life and grid connected power of the battery，a wind power fluctuation mitigation strategy considering the SOC of the energy storage system is proposed based on double Kalman filter. Firstly， the target grid-connected power signal is obtained by double Kalman filter.Then， the optimized energy storage power control command is obtained according to different energy storage power smoothing signal. When the SOC of the battery deviates from the normal operating range in forward or reverse direction， the corresponding optimization energy storage power control signal is sent out to adjust the target wind power grid-connected power. The simulation results show that the proposed method can effectively improve the SOC of the energy storage system，mitigate the fluctuation of wind power， improve the economy of the energy storage system and facilitate the wind power grid connection.

Key words: wind power-energy storage hybrid system, double Kalman filtering, energy storage system, state of charge, wind power, grid connection, power fluctuation

中图分类号:

TK019：TM73

马彦宏, 吕清泉, 张珍珍, 赵龙, 周强, 高鹏飞. 考虑储能系统SOC的双卡尔曼滤波风电功率波动平抑策略[J]. 综合智慧能源, 2023, 45(2): 61-68.

MA Yanhong, LYU Qingquan, ZHANG Zhenzhen, ZHAO Long, ZHOU Qiang, GAO Pengfei. Wind power fluctuation mitigation strategy based on double Kalman filter considering the SOC of the energy storage system[J]. Integrated Intelligent Energy, 2023, 45(2): 61-68.

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