半月刊

ISSN 1000-1026

CN 32-1180/TP

+高级检索 English
基于微分平滑理论的多直流电力弹簧电压平稳控制方法
作者:
作者单位:

上海电力大学电气工程学院,上海市 200090

作者简介:

通讯作者:

基金项目:

国家自然科学基金资助项目(61873159);上海市科委科技创新行动计划资助项目(19DZ2204700);上海工程技术研究中心资助项目(13DZ2251900)。


Voltage Smoothing Control Method for Multiple DC Electric Springs Based on Differential Flatness Theory
Author:
Affiliation:

College of Electric Power Engineering, Shanghai University of Electric Power, Shanghai 200090, China

Fund Project:

This work is supported by National Natural Science Foundation of China (No. 61873159), Science and Technology Innovation Action Plan from Shanghai Science and Technology Commission (No. 19DZ2204700) and Shanghai Engineering Technology Research Center (No. 13DZ2251900).

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    为实现含高比例可再生能源情形下直流微电网母线电压的平稳控制,提出基于微分平滑理论的多直流电力弹簧(DCES)协调控制方法。针对直流微电网多DCES非线性特性与多运行工况,上层设计微分平滑控制方法,直接补偿非线性分量,确保在可再生能源出力波动、系统参数摄动情形下直流母线电压平稳,提升系统稳定性与鲁棒性,同时为下层控制提供电感电流参考轨迹;下层控制设计基于DCES工作模态的模型预测控制方法,通过简化寻优计算量,确保系统动态响应的快速性,无需通信,即可实现电感电流参考轨迹跟踪与各段直流母线电压波动平抑。基于MATLAB/Simulink的仿真结果和基于dSPACE的实验结果验证了所提方法的正确性和可行性。

    Abstract:

    In order to realize voltage smoothing control of the DC microgrid with high proportion of renewable energy, this paper proposes a coordinated control method of multiple DC electric springs (DCESs) based on differential flatness theory. Considering the nonlinear characteristics and multiple working modes of multiple DCESs in the DC microgrid, the differential flatness control method is designed for the upper layer to directly compensate nonlinear components, which ensures stable DC bus voltage under the condition of renewable energy output fluctuation and system parameter perturbation. The stability and robustness of the system are improved, and the reference trajectories of inductor currents are provided for the lower layer. The model predictive control (MPC) method based on the working modes of DCESs is designed for the lower layer. By simplifying the optimization calculation, the rapid dynamic response of the system can be ensured, and the tracking of reference trajectory of inductor current and the voltage fluctuations of various DC bus segments can be achieved without communication. The simulation results based on MATLAB/Simulink and the experimental results based on dSPACE show the correctness and feasibility of the proposed method.

    图1 含多DCES的直流微电网结构Fig.1 Structure of DC microgrid with multiple DCESs
    图2 DCES的4种工作模态Fig.2 Four working modes of DCES
    图3 模型预测控制寻优计算优化设计流程Fig.3 Flow chart of optimal design for optimization calculation of model prediction control
    图4 基于微分平滑理论的多DCES电压平稳控制框图Fig.4 Block diagram of voltage smoothing control of multiple DCESs based on differential flatness theory
    图5 关键负载和非关键负载发生变化情形下系统动态响应仿真波形Fig.5 Simulation waveforms of system dynamic response with variation of critical and non-critical loads
    图6 线路参数发生摄动情形下系统动态响应仿真波形Fig.6 Simulation waveforms of system dynamic response with line parameter perturbation
    图7 电网电压发生大幅波动情形下系统动态响应仿真波形Fig.7 Simulation waveforms of system dynamic response with drastic fluctuation of power grid voltage
    图8 负载变化和系统内部参数摄动情形下的实验波形Fig.8 Experimental waveforms with load changes and system internal parameter perturbation
    参考文献
    相似文献
    引证文献
引用本文

薛花,任春雷,王育飞,等.基于微分平滑理论的多直流电力弹簧电压平稳控制方法[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20190710005.
XUE Hua,REN Chunlei,WANG Yufei,et al.Voltage Smoothing Control Method for Multiple DC Electric Springs Based on Differential Flatness Theory[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20190710005.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-07-10
  • 最后修改日期:2020-03-30
  • 录用日期:2019-10-14
  • 在线发布日期:
  • 出版日期: