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A Novel Algorithm for Dynamic Equivalents of Large Power Systems

机译：大型电力系统动态等效的新算法

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摘要

Issues on the establishment of equivalent networks are becoming essential for the deregulated power market. This paper presents a novel algorithm for reducing the order of a large power system based on dynamic coherency approach. By injecting time-dependent voltage-white-noises as disturbance into the subsystem to be reduced, generators in this subsystem are excited independently from type and location of exciting. On transient conditions, coherent generators are identified with an enhanced accuracy by means of the correlation analysis technique. With the help of the simulation program where a non-linear model of the system involved is described and the algorithm proposed is implemented, a dynamic equivalent can be established automatically. This approach performs in the time domain and does not involve any linearization of the system A case study for a real power system is presented in this paper. The result achieved validates the efficiency of the method presented for reducing the order of large power systems.
机译：建立等效网络的问题对于放松管制的电力市场正变得至关重要。本文提出了一种基于动态相干性方法的大功率系统降阶算法。通过将与时间有关的电压白噪声作为干扰注入子系统中，以减少子系统中的发电机，而不受激励类型和位置的影响。在瞬态情况下，通过相关分析技术可以以更高的精度识别相干发生器。借助仿真程序，其中描述了所涉及系统的非线性模型并实现了所提出的算法，可以自动建立动态等效项。这种方法在时域中执行，并且不涉及系统的任何线性化。本文提出了一个针对实际电力系统的案例研究。所获得的结果验证了所提出的减少大型电力系统阶数的方法的效率。

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