• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2015, Vol. 36 ›› Issue (4): 32-37.doi: 10.3969/j.issn.1000-7229.2015.04.006

• 储能技术专栏 • 上一篇    下一篇

基于变权值自适应滤波的风光储协调优化控制

李德鑫1,董添1,常学飞1,陈跃燕2,韩晓娟3   

  1. 1. 国网吉林省电力有限公司电力科学研究院,长春市 130021;2. 中船重工(重庆)海装风电设备有限公司, 重庆市 401122; 3. 华北电力大学控制与计算机工程学院,北京市 1022061
  • 出版日期:2015-04-01
  • 作者简介:李德鑫(1985),男,工学硕士,工程师,主要从事新能源并网技术和大电网仿真方面的研究工作; 董添(1986),男,工学硕士,工程师,主要从事调度自动化、智能变电站监控系统调试与运维方面的研究工作; 常学飞(1984),男,工学硕士,工程师,主要从事新能源并网检测、电能质量治理方面的研究工作; 陈跃燕(1987),女,硕士,研究方向为新能源发电控制技术、储能技术; 韩晓娟(1970),女,工学博士,副教授,研究方向为新能源发电控制技术、储能及检测技术。
  • 基金资助:

    国家自然科学青年基金(51107126)

Optimal Control of PV-Wind-Storage Hybrid Power System Based on Variable Weight Adaptive Filtering

LI Dexin1, DONG Tian1, CHANG Xuefei1, CHEN Yueyan2, HAN Xiaojuan
  

  1. . Electric Power Research Institute, State Grid Jilin Electric Power Co., Ltd., Changchun 130021, China;2. CSIC (Chongqing) Haizhuang Wind power Equipment Co., Ltd., Chongqing 401122, China;
    3. School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China
  • Online:2015-04-01
  • Supported by:

    Project Supported by National Natural Science Foundation for Young Scholars of China(51107126)

摘要:

针对平抑风光储联合发电系统输出功率波动问题,提出一种具有变权值自适应滤波的风光储协调优化控制策略。在传统的加权移动滤波算法基础上,分析了储能出力、波动率以及滤波带宽的关系,以储能系统的荷电状态(state of charge,SOC)平衡度指标和并网功率波动率作为约束条件实时调整加权移动滤波算法的权值与滤波带宽。在给定的波动率约束下,实现风光储联合发电系统协调优化控制。算例表明,所提出的变权值自适应滤波算法优于传统的一阶低通滤波风光功率平滑效果,在保证SOC合理水平前提下,有效平抑了风光联合输出功率的波动,降低了储能系统充放电次数,提高了储能系统的使用寿命。

关键词: 波动率约束, 加权移动滤波, 荷电状态(SOC), 储能成本, 滤波带宽

Abstract:

This paper proposed an optimal control strategy for photovoltaic (PV)-wind-storage coordination based on variable weight adaptive filtering to smooth the fluctuations of the output power in the PV-wind-storage hybrid power system. Based on traditional weighted moving filtering algorithm, the relationship of the output of energy storage system, the fluctuation rates and the filtering bandwidth was analyzed; the balance index of the state of charge (SOC) of energy storage system and the fluctuation rates of the output power connected to the grid were used as constraint conditions to optimize the weight of the weighted moving filtering algorithm and the filtering bandwidth. Under the given constraint of fluctuation rate, the coordination optimal control of hybrid power system including PV, wind power and energy storage system was achieved. The example results show that the smoothing performance of PV-wind power of the proposed variable weight adaptive filtering method is better than that of traditional first-order low-pass filtering method. Under the premise of maintaining a reasonable level of SOC, the fluctuation of PV-wind output power is smoothed significantly, the charging or discharging times of energy storage system are reduced and the service life of energy storage system is improved.

Key words: fluctuation rate constraint, weighted moving filtering, state of charge (SOC), energy storage cost, filtering bandwidth

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