基于灵敏度分析的储能电池参与二次调频控制策略

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摘要针对储能电池参与电网二次调频,基于灵敏度分析,提出了一种综合区域控制误差（ACE）信号分配模式和传统的区域控制需求（ARR）信号分配模式优点的控制策略。首先,针对ACE和ARR信号分配模式,在复频域中利用灵敏度原理分析含储能电池参与二次调频的区域电网频率特性,据此提出确定储能电池动作时机及调节模式的方法;计及时域中储能电池的能量限制和传统电源的爬坡速率限制,依据动态调频容量指标,提出确定储能电池动作深度的方法;最后形成考虑动作时机与深度的储能电池控制策略,并给出相应的实现流程。结合实际电网的阶跃扰动工况进行仿真证明,结果表明该策略不仅能较大程度地改善电网调频以及储能电池运行的性能,而且充分利用各调频电源的技术优势。

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	李欣然
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	欧阳璐璐

关键词 ：储能电池系统, 调频, 调节模式, 灵敏度分析, 控制策略

Abstract：A control strategy of battery energy storage system (BESS) is proposed for secondary frequency regulation (SFR). This strategy integrates the advantages of the area control error (ACE) and traditional area regulation requirement (ARR) signal distribution modes. Regarding the two signal distribution modes, the frequency characteristics of regional grids involving BESS are analyzed in complex frequency domain by the sensitivity theory. Thereafter a method to determine the action moments and control modes of BESS is presented. Taken into account the energy limitation of BESS and the ramping constraints of conventional generators in the time domain, a method to determine the action depth of BESS is put forward based on the dynamic available AGC (DAA) indices. Finally, the control strategy of BESS considering its action moments and depth is proposed, and the corresponding implementation process is given. The simulations of step disturbance case from an actual power system are carried out. The results show that the proposed strategy can largely improve the performance of frequency regulation and BESS operation, and can take advantages.

Key words： Battery energy storage system (BESS) frequency regulation regulation modes sensitivity analysis control strategy

收稿日期: 2015-12-19 出版日期: 2017-06-30

PACS:

TM732

基金资助:国家重点基础研究发展计划（973计划）（2012CB215106）和国家自然科学基金（51477043）资助项目

通讯作者: 黄际元男,1988年生,博士,研究方向为储能在电力系统中的应用及其建模。E-mail: hjycm@hnu.edu.cn

作者简介: 李欣然男,1957年生,教授,博士生导师,研究方向为电力系统分析控制、负荷建模。E-mail: 1013lixinyan@qq.com

引用本文:

李欣然, 黄际元, 陈远扬, 黎淑娟, 欧阳璐璐. 基于灵敏度分析的储能电池参与二次调频控制策略[J]. 电工技术学报, 2017, 32(12): 224-233. Li Xinran, Huang Jiyuan, Chen Yuanyang, Li Shujuan, Ouyang Lulu. Battery Energy Storage Control Strategy in Secondary Frequency Regulation Considering Its Action Moment and Depth. Transactions of China Electrotechnical Society, 2017, 32(12): 224-233.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2017/V32/I12/224

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