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Structure-Preserving Dynamic Equivalents for Large-Scale Power Systems using Border Synchrony

机译：利用边界同步的大型电力系统保持结构的动态等效

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In general, the existing model reduction methods for power systems use information of the overall system to reduce part of it. This information may not always be available as it may be the case for the studies of interconnection of two power systems. In such situations, when reducing one power system, full data for the other one cannot always be used. However, the reduction should be done such that when connecting the two simplified models, the important cross-border phenomena like, e.g., inter-area modes which involve machines of both sides are preserved. We propose here an approach based on a new definition of the equivalence classes of machines in the zone to be reduced, called border synchrony. The Synchronic Modal Equivalencing (SME) principles of constructing the equivalent are used in this new framework to obtain a structure-preserving reduced system considering that the modes of interest are those observed in the interconnection lines between the two power systems. The feasibility in large-scale systems is studied on a representation of the UCTE power system. However the notion of border synchrony is independent of the effective reduction method and it can thus be exploited with any dynamic model reduction methodology for power systems.
机译：通常，电力系统的现有模型简化方法使用整个系统的信息来简化其中的一部分。该信息可能并不总是可用，因为研究两个电源系统的互连可能是这样。在这种情况下，减少一个电源系统时，不能总是使用另一电源系统的完整数据。但是，应该进行简化，以使得在连接两个简化模型时，保留了重要的跨界现象，例如涉及两侧机器的区域间模式。我们在此提出一种基于要减少区域中机器的等效类的新定义的方法，称为边界同步。考虑到感兴趣的模式是在两个电力系统之间的互连线路中观察到的模式，在这个新的框架中使用构造等效项的同步模态等效（SME）原理来获得结构保留的简化系统。以UCTE电力系统的表示形式研究了大型系统的可行性。但是，边界同步的概念与有效的简化方法无关，因此可以用于电力系统的任何动态模型简化方法中。

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