A DC power flow controller and its control strategy in the DC grid

2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia) Pub Date : 2016-05-22 DOI:10.1109/IPEMC.2016.7512709

L. Yao, Hongfen Cui, Jun Zhuang, Guanjun Li, Bo Yang, Zhibing Wang

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引用次数: 13

Abstract

The operation principle of the dc power flow controller in the dc grid is presented, the impacts of the dc voltage and line equivalent resistance on dc power flow are analyzed. Based on these studies, a new dc power flow controller based on dual active bridge (DAB) topology is proposed accordingly in this paper. Compared with existing literatures, the proposed dc power flow controller is able to control the bi-directional power flow of the dc transmission line without requiring any external power supplies. PSCAD/EMTDC software simulations are carried out on a two-terminal double-line voltage source converter (VSC) based dc grid including with the proposed dc power flow controller. Furthermore, the corresponding experimental verification is undertaken using a scale-down prototype of the proposed dc power flow controller. The simulation and experimental results under various operation conditions show that the proposed dc power flow controller can effectively control the dc power flow as defined.

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直流电网中一种直流潮流控制器及其控制策略

介绍了直流电网中直流潮流控制器的工作原理，分析了直流电压和线路等效电阻对直流潮流的影响。在此基础上，本文提出了一种基于双有源电桥(DAB)拓扑结构的新型直流潮流控制器。与已有文献相比，本文提出的直流潮流控制器能够在不需要任何外部电源的情况下控制直流输电线路的双向潮流。采用PSCAD/EMTDC软件对基于双端双线电压源变换器(VSC)的直流电网进行了仿真，并对所提出的直流潮流控制器进行了仿真。此外，利用所提出的直流潮流控制器的缩小原型进行了相应的实验验证。在各种运行条件下的仿真和实验结果表明，所设计的直流潮流控制器能够有效地控制所定义的直流潮流。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)

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