• 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 ›› 2022, Vol. 43 ›› Issue (10): 77-86.doi: 10.12204/j.issn.1000-7229.2022.10.008

• 智能电网 • 上一篇    下一篇

考虑荷电状态的交直流微电网多模式协调控制策略

林佩怡, 米阳(), 李海鹏, 姜恩宇, 时帅   

  1. 上海电力大学电气工程学院,上海市 200090
  • 收稿日期:2022-03-17 出版日期:2022-10-01 发布日期:2022-09-29
  • 通讯作者: 米阳 E-mail:348015134@qq.com
  • 作者简介:林佩怡(1997),女,硕士研究生,主要研究方向为交直流混合微电网控制;
    李海鹏(1998),男,硕士研究生,主要研究方向为微电网优化配置;
    姜恩宇(1981),男,博士,讲师,主要研究方向为智能控制;
    时帅(1987),男,博士,讲师,主要研究方向为电力系统可靠性。
  • 基金资助:
    国家自然科学基金项目(61873159);上海市自然科学基金(22ZR1425500)

Multi-mode Coordinated Control Strategy for AC/DC Hybrid Microgrid

LIN Peiyi, MI Yang(), LI Haipeng, JIANG Enyu, SHI Shuai   

  1. School of Electric Power Engineering, Shanghai University of Electric Power, Shanghai 200090, China
  • Received:2022-03-17 Online:2022-10-01 Published:2022-09-29
  • Contact: MI Yang E-mail:348015134@qq.com
  • Supported by:
    National Natural Science Foundation of China(61873159);Natural Science Foundation of Shanghai(22ZR1425500)

摘要:

针对孤岛运行的交直流混合微电网,提出了一种考虑子网负载状态和储能子网荷电状态的多模式协调控制策略。状态判定级将储能荷电状态水平划分为五种模式,详细规划各模式下子网间六种功率交互状态对应的网络工况,使储能子网参与子网间功率交互的优先性随荷电状态变化。功率互助级控制各子网间双向互联变换器传输功率,本地级采用下垂控制保持子网自治。该策略可减少不必要的功率交互损耗,预先避免储能子网因过度充放失去功率调节能力。MATLAB/Simulink与RT-LAB平台上建立的仿真模型验证了所提控制策略的实时有效性。

关键词: 交直流混合微电网, 协调控制, 荷电状态, 状态切换

Abstract:

A multi-mode coordinated control strategy is proposed for isolated AC/DC hybrid microgrid, which considers load state and the charge state of the energy storage subnet. In the state judgment level, the charged state of energy storage is divided into five modes, and the network operating conditions corresponding to the six power interaction states between subnets under each mode are planned in detail. The priority of energy storage subnets participating in power interaction among subnets changes with the state of charge. Power mutual-aid level controls the transmission power of bidirectional interlinking converters between subnets. At the local level, droop control is used to keep the subnet autonomous. This strategy can reduce unnecessary power interaction losses, and prevent the energy storage subnets from losing power regulation ability due to excessive charge and discharge in advance. Simulation models on the MATLAB/Simulink and RT-LAB verify the real-time effectiveness of the proposed control strategy.

Key words: AC/DC hybrid microgrid, coordinated control, state of charge, state switching

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