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基于线路阻抗补偿的互联变流器控制策略
作者:
作者单位:

哈尔滨工业大学(深圳)机电工程与自动化学院,广东省深圳市 518055

摘要:

为了解决线路阻抗压降导致互联变流器(IC)传输功率存在偏差的问题,文中提出一种基于线路阻抗补偿的控制策略。首先,该方法借助交流母线处的变换器,向IC侧注入一定频率的谐波,其谐波频率与注入时刻母线电压存在一定函数关系,并在IC侧通过滤波器和锁相环得到谐波频率,结合IC侧的本地功率和电压,获取线路阻抗。然后,在线路阻抗检测的基础上,通过在IC的控制中补偿线路压降,从而在无互联通信的情况下实现功率的准确传输。最后,在MATLAB和StarSim实时仿真平台上搭建交直流混合微电网模型,验证了所提方法的有效性。

关键词:

基金项目:

国家自然科学基金资助项目(52077045)。

通信作者:

作者简介:

王灿(1984—),男,博士,特聘副研究员,IEEE Member,主要研究方向:柔性直流输电、交直流混合微电网、新能源汽车驱动电力电子系统。E-mail:can.wang@hit.edu.cn
邓灿(1996—),男,硕士研究生,主要研究方向:交直流混合微电网控制与稳定性。E-mail:19s153178@stu.hit.edu.cn
潘学伟(1988—),男,通信作者,博士,特聘研究员,主要研究方向:智能混合型微电网、可再生能源转换/分布式发电系统等。E-mail:davidpeterpan@163.com


Control Strategy for Interlinking Converter Based on Line Impedance Compensation
Author:
Affiliation:

School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China

Abstract:

In order to solve the problem of deviations in the transmitted power of the interlinking converter (IC) due to line impedance voltage drop, this paper proposes a control strategy based on the line impedance compensation. First, harmonics of a certain frequency are injected into the IC side with the help of a converter at the AC bus. The harmonic frequency is a function of the bus voltage at the time of injection and is obtained on the IC side through a filter and a phase-locked loop. Then, the line impedance is obtained by combining the local power and voltage on the IC side. Based on the line impedance detection, the line voltage drop can be compensated in the control of the IC, so as to achieve accurate power transmission without interconnected communication. Finally, a hybrid AC/DC microgrid model is built on MATLAB and StarSim real-time simulation platform to verify the effectiveness of the proposed method.

Keywords:

Foundation:
This work is supported by National Natural Science Foundation of China (No. 52077045 ).
引用本文
[1]王灿,邓灿,潘学伟,等.基于线路阻抗补偿的互联变流器控制策略[J].电力系统自动化,2021,45(18):141-150. DOI:10.7500/AEPS20210207001.
WANG Can, DENG Can, PAN Xuewei, et al. Control Strategy for Interlinking Converter Based on Line Impedance Compensation[J]. Automation of Electric Power Systems, 2021, 45(18):141-150. DOI:10.7500/AEPS20210207001.
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  • 收稿日期:2021-02-07
  • 最后修改日期:2021-05-05
  • 录用日期:
  • 在线发布日期: 2021-09-16
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