Stability Analysis and Control Design for Multiterminal HVDC Network With Power Flow Controller

IF 2.1 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE IEEE Canadian Journal of Electrical and Computer Engineering Pub Date : 2023-02-27 DOI:10.1109/ICJECE.2022.3228337

Muhammad Qasim Khan;Muhammad Mansoor Khan;Arshad Nawaz;Xu Yi;Haibing Wang;Chengmin Wang

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引用次数: 1

Abstract

The power flow control in high-voltage direct current (HVDC) grids can be improved by employing the interline dc power flow controller (IDCPFC). This article presents an improved control scheme using IDCPFC to balance power flow in the dc networks. In this work, a differential-mode transformer (DMT) is used in combination with a bidirectional buck converter to form a variable DMT. In comparison to the existing methods, the proposed system is scalable to higher voltages and powers, which makes it suitable for high-voltage dc transmission systems. Analysis of a small-signal model of the proposed method and design of compensator for improvement of transient behavior is performed. A simulation is performed with independent feed-forward and feedback control to show the effectiveness of the proposed method. The proposed method is also validated through a 600-W experimental prototype. The experimental results show that the current flow between lines is controlled for unbalance load conditions.

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带潮流控制器的多端高压直流输电网稳定性分析与控制设计

采用线间直流潮流控制器可以改善高压直流电网的潮流控制。本文提出了一种改进的控制方案，使用IDCPFC来平衡直流网络中的功率流。在这项工作中，差模变压器（DMT）与双向降压转换器结合使用，形成可变DMT。与现有方法相比，所提出的系统可扩展到更高的电压和功率，这使其适用于高压直流输电系统。对所提出的方法的小信号模型进行了分析，并设计了用于改善瞬态行为的补偿器。通过独立的前馈和反馈控制进行仿真，验证了该方法的有效性。该方法还通过600-W实验样机进行了验证。实验结果表明，在负载不平衡的情况下，线路之间的电流是可控的。

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来源期刊

IEEE Canadian Journal of Electrical and Computer Engineering

CiteScore

3.70

自引率

0.00%

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