文章摘要
李若,李欣然,谭庄熙,等.考虑储能电池参与二次调频的综合控制策略[J].电力系统自动化,2018,42(8):74-82. DOI: 10.7500/AEPS20171011007.
LI Ruo,LI Xinran,TAN Zhuangxi, et al.Integrated Control Strategy Considering Energy Storage Battery Participating in Secondary Frequency Regulation[J].Automation of Electric Power Systems,2018,42(8):74-82. DOI: 10.7500/AEPS20171011007.
考虑储能电池参与二次调频的综合控制策略
Integrated Control Strategy Considering Energy Storage Battery Participating in Secondary Frequency Regulation
DOI:10.7500/AEPS20171011007
关键词: 二次调频  电池储能系统  状态感知  区域控制偏差  荷电状态
KeyWords: secondary frequency regulation  battery energy storage system  state awareness  area control error  state of charge
上网日期:2018-03-16
基金项目:国家重点研发计划资助项目(2017YFB0903400);国家自然科学基金资助项目(51477043);湖南省科技重大专项(2016GK1003)
作者单位E-mail
李若 湖南大学电气与信息工程学院, 湖南省长沙市 410082  
李欣然 湖南大学电气与信息工程学院, 湖南省长沙市 410082  
谭庄熙 湖南大学电气与信息工程学院, 湖南省长沙市 410082 tanzhuangxi@hnu.edu.cn 
黄际元 国网湖南省电力有限公司长沙供电分公司, 湖南省长沙市 410015  
马智慧 湖南大学电气与信息工程学院, 湖南省长沙市 410082  
摘要:
      随着储能辅助常规机组参与调频在电力系统中得到规模化的应用,如何制定合理的储能出力控制策略来实现储能和常规机组互补协调运行是储能调频应用中的关键问题。文中基于实时状态感知与综合研判,利用Logistic回归函数,构建储能自适应调频和自恢复储能荷电状态(SOC)两种工况的控制规律;将区域控制偏差信号划分成不同的状态区间以定量描述电网二次调频备用容量状态,得到电网调频需求和运行状态限制,兼顾储能调频能力及SOC自恢复需求,确定储能在不同区间上的出力目标和动作深度,实现储能和常规机组参与二次调频互补协调运行。在MATLAB/Simulink中构建储能参与二次调频两种典型场景,对所提控制策略进行仿真验证。结果表明,所提控制策略在改善调频效果和储能SOC维持效果以及提高常规机组利用率等方面具有优势。
Abstract:
      Due to the large-scale application of energy storage auxiliary conventional units in frequency modulation in power system, it is the key problem in energy storage frequency modulation how to develop reasonable energy storage output control strategy to achieve complementary operation of energy storage and conventional units. On the basis of real-time state perception and comprehensive evaluation, the control strategy of two kinds of operation conditions of energy storage(adaptive frequency regulation and restoration of the state of charge(SOC))is established, using Logistic regression model. The area control error(ACE)signal is divided into different intervals to quantitatively describe the spare capacity of secondary frequency regulation of the conventional power units. Then the output goals of energy storage in different ACE intervals are set up, which are determined by the comprehensive consideration of the ability of frequency regulation and the SOC recovery demand. Therefore, the energy storage and the conventional units can participate in the secondary frequency regulation in a coordinated way. Finally, two typical scenes are constructed in MATLAB/Simulink, and the proposed control strategy is simulated and verified. The simulation results show that the proposed control strategy has advantages in improving the effect of frequency regulation, maintaining the SOC of energy storage, and achieving better utilization of the conventional units.
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