期刊刊名：南開學報 　 卷期：10卷2期

篇名出版日期：2013年12月1日

作者：張英彬,楊烈岱,Ying-Pin Chang,Lieh-Dai Yang

語言：English

關鍵字：Distributed generation (DG), voltage sag, power quality, sensitive loads, particle swarm optimization method, special connection transformers,分散式發電機,電壓驟降,電力品質,敏感性負載,粒子群最佳化演算法,特殊變壓器連接

被點閱次數：5次

閱讀時間：58sec

摘要：
This paper investigates the voltage sag planning of distributed generation (DG) system for three-phase to two-phase connection transformers with Scott and Le Blanc. The particle swarm optimization (PSO) method was used to determine the design values. This analysis considers the sensitive loads and over-current relays coordination. The model composed of node admittance matrix for voltage sag calculation was investigated to obtain the system sag severity after single or two-phase faults. The analytical equations were useful in the mathematical method of optimal planning. The PSO was then used to obtain suitable transformer impedances and the values of relay time multiplier parameters. The search for the global optimal solution was applied to the voltage sag problems in tests on the power systems with Scott, and Le Blanc, respectively, connection transformers were chosen to reveal the effectiveness of this method. Finally, the study results showed that the voltage sag severity could be improved by tuning the transformer impedances and relay settings.

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