Synchronic modal equivalencing (SME) for structure-preserving dynamic equivalents
Synchronic modal equivalencing (SME) for structure-preserving dynamic equivalents
复制标题
用于保持结构的动态等效的同步模态等效 (SME)
DOI：
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发表时间：
1996
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影响因子：
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通讯作者：
D. Peltier
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作者：
G. N. Ramaswamy;L. Rouco;O. Fillatre;G. Verghese;P. Panciatici;B. Lesieutre;D. Peltier
本文将作者最近在经典摆动方程模型的基础上提出的一种新的互联电力系统动态等价框架扩展为结构保持、微分/代数方程形式的详细模型。系统在同步性的基础上被划分为一个研究区域和一个或多个外部区域，这是形成其框架的一个分支的慢相干的概括。保留每个外部区域的单个参考发生器的详细模型，然后以选择模态分析的方式对其余外部发生器的动力学进行模态等效；这种模态等价是其框架的另一个分支。等效的外部发电机因此被一个线性多端口“导纳”所取代，这很容易用被取代发电机母线上的可控电流注入器来表示。系统模型的其余部分可以保留其原始的非线性动态形式。该方法在熟悉的三阶，10台机器，39总线的新英格兰模型上进行了测试，并使用了EUROSTAG仿真包中的实现，结果令人鼓舞。
A novel framework for dynamic equivalencing of interconnected power systems that the authors recently introduced in the context of classical swing-equation models is extended in this paper to detailed models in structure-preserving, differential/algebraic-equation form. The system is partitioned into a study area and one or more external areas on the basis of synchrony, a generalization of slow-coherency that forms one leg of their framework. Retaining a detailed model for a single reference generator from each external area, the dynamics of the remaining external generators are then modally equivalenced in the style of selective modal analysis; this modal equivalencing is the other leg of their framework. The equivalenced external generators are thereby collectively replaced by a linear multi-port "admittance", which is easily represented using controlled current injectors at the buses of the replaced generators. The rest of the system model can be retained in its original nonlinear dynamic form. The approach is tested-with encouraging results-on the familiar third-order, 10-machine, 39-bus New England model, using an implementation in the EUROSTAG simulation package.