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

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。

关键词:

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);上海绿色能源并网工程技术研究中心资助项目(13DZ2251900)。

通信作者:

薛花(1979—),女,通信作者,博士,副教授,主要研究方向:大功率新能源并网逆变技术、非线性理论与控制方法。E-mail:distributepower@163.com

作者简介:

任春雷(1995—),男,硕士研究生,主要研究方向:直流电力弹簧、新能源并网逆变技术。
王育飞(1974—),男,博士,教授,主要研究方向:电力变换应用技术、电能质量分析与控制。


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

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.

Keywords:

Foundation:
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 Research Center of Green Energy Grid-connected Technology (No. 13DZ2251900).
引用本文
[1]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].电力系统自动化,2020,44(14):130-140. DOI: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]. Automation of Electric Power Systems, 2020, 44(14):130-140. DOI:10.7500/AEPS20190710005.
复制
分享
历史
  • 收稿日期:2019-07-10
  • 最后修改日期:2019-10-10
  • 录用日期:
  • 在线发布日期: 2020-07-20
  • 出版日期:
相关附件