A new hybrid method for on-line dynamic security assessment

被引：2
|
作者：
Cheung, KW [1 ]
机构：
[1] Cegelec ESCA Corp, Bellevue, WA 98004 USA
来源：
CONTROL ENGINEERING PRACTICE | 1998年 / 6卷 / 11期
关键词：
transient stability assessment; on-line security analysis; energy management systems;
D O I：
10.1016/S0967-0661(98)00095-1
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a new hybrid method called marginally unstable injection (MUI). This method incorporates energy function analysis into a time-domain simulator for transient stability assessment. Using a 'controlled' sequence of short pseudo-faults and the concept of slow energy function (SEF), the proposed method provides an improved stability index by impelling a stable system to a marginally unstable state. The resulting stability index is then utilized for estimating the amount of generation rejection required to maintain transient stability within the framework of on-line dynamic security assessment. The technique developed is applied to a 700-bus North America system. (C) 1998 Elsevier Science Ltd. AII rights reserved.
引用
收藏
页码：1373 / 1380
页数：8
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