• 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 ›› 2019, Vol. 40 ›› Issue (3): 27-33.doi: 10.3969/j.issn.1000-7229.2019.03.004

• 综合能源系统 ·栏目主持 文福拴教授、赵俊华副教授、鲁刚博士· • 上一篇    下一篇

基于模型预测控制的园区热电联供微电网能量优化

蔡超1,窦晓波2,曹水晶2,陈曦1,王娜1   

  1. 1.国网江苏省电力公司经济技术研究院,南京市 210008;2.东南大学电气工程学院,南京市 210096
  • 出版日期:2019-03-01
  • 作者简介:蔡超(1985),男,博士研究生,主要从事电力系统继电保护方面的研究工作; 窦晓波(1979),男,通信作者,教授,博士生导师,主要研究方向为分布式电源(储能)变流器优化控制、分布式电源高渗透配电网、微电网运行控制与能量优化、智能变电站与电力通信; 曹水晶(1994),女,硕士研究生,主要研究方向为微电网能量管理; 陈曦(1988),男,硕士研究生,主要从事电力系统规划、直流输电系统、柔性直流电网可靠性等方面的研究工作; 王娜(1986),女,博士研究生,主要研究方向为航空负载特性、电网集成仿真及其稳定性分析。
  • 基金资助:
    国网江苏省电力有限公司科技项目(J2018058)

Energy Optimization Based on Model Predictive Control for Combined Heating and Power Microgrid in Industrial Park

CAI Chao1, DOU Xiaobo2, CAO Shuijing2, CHEN Xi1, WANG Na1   

  1. 1.State Grid Jiangsu Economic Research Institute, Nanjing 210008, China;2. School of Electrical Engineering, Southeast University, Nanjing 210096, China
  • Online:2019-03-01
  • Supported by:
    This work is supported by State Grid Jiangsu Electric Power Company Research Program (No. J2018058).

摘要: 热电联供(combined heat and power,CHP)微电网利用电、天然气作为热能来源,具有经济、环保的特性,能够有效解决综合供电供热问题,在工业园区有着广阔的应用前景。CHP微电网中可再生能源出力的随机性和负荷预测误差会导致能量优化的精确性降低,并且由于电、热负荷存在差异,高热电耦合度的CHP微电网经济性较差。因此,基于模型预测控制(model predictive control,MPC)算法提出一种多时间尺度能量优化方法。该方法在日前预测下一天的机组出力、储能调度计划;在日内基于MPC算法参考日前计划进行实时能量优化,并根据系统中的热损设计反馈环节,提高优化结果精确性。最后,基于MATLAB进行了算例仿真,验证了所提方法可以降低系统运行成本,能够实现系统热电解耦、储能削峰填谷、提高可再生能源消纳率的效果,并且具有较好的适用性和准确性。

关键词: 园区, 微电网, 热电联供(CHP), 多时间尺度, 能量优化, 模型预测控制(MPC)

Abstract: Combined heat and power (CHP) microgrid uses electricity and natural gas as sources of heat energy, which has the characteristics of economy and environmental protection. It can effectively solve the problem of comprehensive power and heat supply, and has broad application prospects in industrial parks. Considering the randomness of renewable energy in CHP microgrid and the error of load forecasting, the accuracy of energy optimization will be reduced. And there are differences between electric and thermal loads, and the economy of CHP microgrid with high thermoelectric coupling is poor. This paper proposes a multi-time-scale energy optimization method based on model predictive control (MPC). The allocation energy and storage scheduling is optimized according to the day-ahead plan. Applying the MPC algorithm, the real-time energy optimization is planned in the day, and the optimization results are improved due to the feedback design of heat loss in the system. Finally, in the case simulation in MATLAB, the applicability and the accuracy of the proposed method is verified, and the operation cost of the system is reduced. The simulation results show that the method achieves the effect of thermoelectric decoupling and peak shaving and valley filling by energy storage, meanwhile improving the utilization of renewable energy.

Key words:  industrial park, microgrid, combined heat and power (CHP), multi-time scale, energy optimization, model predictive control (MPC)

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