Response of D-STATCOM under unbalanced voltage condition caused by SLG fault

N. Wahab, Norman Mariun, Azah Mohamed, M. Mohamad
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引用次数: 6

Abstract

This work presents a study on a distribution static compensator (D-STATCOM) operating in electrical systems where the voltages are unbalanced due to SLG fault. During the SLG fault, negative sequence components exist in the system. In balanced systems the STATCOM has a very good performance, allowing compensation of capacitive or inductive reactive power with a fast transient response. When there are negative sequence components due to voltage imbalance, the D-STATCOM has reacted in reducing the unbalanced in the system. An analytical analysis, and simulations of a 12-pulse D-STATCOM using the electromagnetic transient program (PSCAD/EMTDC) show how D-STATCOM reacts during the unbalanced in the system affected by negative sequence components and how its performance increase the power system's stability. The D-STATCOM performances under unbalanced voltage are illustrated in the paper along with harmonics analysis study.
SLG故障引起的电压不平衡状态下D-STATCOM的响应
本工作介绍了一种配电静态补偿器(D-STATCOM)在电力系统中运行的研究,其中电压不平衡是由于SLG故障造成的。SLG故障时,系统中存在负序分量。在平衡系统中,STATCOM具有非常好的性能,可以以快速的瞬态响应补偿电容性或电感性无功功率。当由于电压不平衡而产生负序分量时,D-STATCOM起到了降低系统不平衡的作用。利用电磁暂态程序(PSCAD/EMTDC)对12脉冲D-STATCOM进行了分析和仿真,展示了D-STATCOM在系统中受负序分量影响时的不平衡反应,以及其性能如何提高系统的稳定性。本文阐述了D-STATCOM在不平衡电压下的性能,并进行了谐波分析研究。
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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