Dynamic Phasor Modeling of LCC-HVDC Systems: Unbalanced Operation and Commutation Failure

IF 1.7 Q2 Engineering

Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique Pub Date : 2019-06-24 DOI:10.1109/CJECE.2019.2903842

M. Daryabak, S. Filizadeh, Afshin Bagheri Vandaei

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引用次数: 11

Abstract

This paper develops a dynamic phasor model of a line-commutated converter high-voltage direct current (LCC-HVDC) system that includes unbalanced operation and commutation failure. This model is beneficial in studying the behavior of the HVDC systems under asymmetrical faults, and it complements the conventional transient simulation-based methods. Equally, importantly, the model includes the representation of commutation failure that may arise as a result of severe faults. Due to its selectivity of the considered harmonics, the developed model has markedly less computational intensity than an electromagnetic transient (EMT) simulation model. This gives the model a distinct advantage in the study of large-signal transients of the LCC-HVDC systems, particularly where repetitive simulations are required. Validation of the proposed model is done using a detailed EMT model of the CIGRE monopolar LCC-HVDC benchmark.

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LCC-HVDC系统的动态相量建模：不平衡运行和换流故障

本文建立了包括不平衡运行和换相故障的线路换流器高压直流系统的动态相量模型。该模型有利于研究HVDC系统在不对称故障下的行为，并补充了传统的基于暂态仿真的方法。同样重要的是，该模型包括严重故障可能导致的换向故障的表示。由于其对所考虑谐波的选择性，所开发的模型的计算强度明显低于电磁暂态（EMT）模拟模型。这使该模型在LCC-HVDC系统的大信号瞬态研究中具有明显的优势，特别是在需要重复模拟的情况下。使用CIGRE单极LCC-HVDC基准的详细EMT模型对所提出的模型进行了验证。

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

Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique 工程技术-工程：电子与电气

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期刊介绍： The Canadian Journal of Electrical and Computer Engineering (ISSN-0840-8688), issued quarterly, has been publishing high-quality refereed scientific papers in all areas of electrical and computer engineering since 1976