Stability analysis of VSC-HVDC system based on new phase-locked-loop less voltage oriented control method

IF 0.7 Q3 ENGINEERING, MULTIDISCIPLINARY

Engineering Review Pub Date : 2023-01-01 DOI:10.30765/er.2101

Guessabi Anwar, Gherbi Ahmed, Chebabhi Ali

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引用次数: 0

Abstract

Voltage Source Converters-based High Voltage Direct Current (VSC-HVDC) systems are generally implemented to transmit power across long distances due to their low cost and flexibility. This paper will discuss a new simple and low-computational-burden phase-locked loop less voltage-oriented control strategy (PLL-less-VOC strategy) for controlling and synchronizing a VSC-HVDC system in a synchronous rotating frame (dq frame). The proposed method is used not only to control the VSC-HVDC but also to obtain the mathematical model of both VSCs-based HVDC systems in the dq frame using the basics of the direct instantaneous power control theory (DPC) without using PLL and Park transformations. The proposed PLL-less-VOC strategy is equivalent to the conventional VOC strategy for steady-state stability, but it has the benefit of both conventional VOC and DPC, better transient stability performance, and low computational burden in the implementation. The experimental tests using STM32F407G microcontroller demonstrate that the proposed control strategy has better dynamic stability under certain exceptional conditions such as step changes on DC-link voltage change, powers change, and three-phase fault.

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基于新型低锁相环电压定向控制方法的vdc - hvdc系统稳定性分析

基于电压源变换器的高压直流(vcs - hvdc)系统由于其低成本和灵活性，通常用于长距离传输电力。本文将讨论一种新的简单、低计算负担的锁相环无电压定向控制策略(PLL-less-VOC策略)，用于同步旋转框架(dq框架)中vdc - hvdc系统的控制和同步。该方法不仅用于控制VSC-HVDC，而且在不使用锁相环和帕克变换的情况下，利用直接瞬时功率控制理论(DPC)的基础知识，在dq框架下获得了基于VSC-HVDC系统的数学模型。提出的PLL-less-VOC策略相当于传统的稳态稳定VOC策略，但它同时具有传统VOC和DPC的优点，具有更好的瞬态稳定性能，并且在实现过程中计算量小。采用STM32F407G单片机进行的实验测试表明，该控制策略在直流链路电压阶跃变化、功率变化、三相故障等特殊情况下具有较好的动态稳定性。

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

Engineering Review ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： Engineering Review is an international journal designed to foster the exchange of ideas and transfer of knowledge between scientists and engineers involved in various engineering sciences that deal with investigations related to design, materials, technology, maintenance and manufacturing processes. It is not limited to the specific details of science and engineering but is instead devoted to a very wide range of subfields in the engineering sciences. It provides an appropriate resort for publishing the papers covering prior applications – based on the research topics comprising the entire engineering spectrum. Topics of particular interest thus include: mechanical engineering, naval architecture and marine engineering, fundamental engineering sciences, electrical engineering, computer sciences and civil engineering. Manuscripts addressing other issues may also be considered if they relate to engineering oriented subjects. The contributions, which may be analytical, numerical or experimental, should be of significance to the progress of mentioned topics. Papers that are merely illustrations of established principles or procedures generally will not be accepted. Occasionally, the magazine is ready to publish high-quality-selected papers from the conference after being renovated, expanded and written in accordance with the rules of the magazine. The high standard of excellence for any of published papers will be ensured by peer-review procedure. The journal takes into consideration only original scientific papers.