Proceedings ArticleDOI
Coherency of generators for inter-area modes using digital filter bank and principal component analysis
Kalyani Mandadi,B. Kalyan Kumar +1 more
- pp 1-5
TLDR
In this paper, coherent generators participating in an inter-area mode are identified from time synchronized phasor measurements using principal component analysis (PCA) for identifying generator coherency.Abstract:
In the present work, coherent generators participating in an inter-area mode are identified from time synchronized phasor measurements. In the first step, Zolotarev polynomial based filter bank (ZPBFB) is applied on the real power data of all generators obtained from phasor measurement units (PMUs) to decompose the given signal into monocomponents. The mono-components are then given to eigen realization algorithm (ERA) for modal frequency and damping. The decomposed signals of those generators participating in a particular inter-area mode are given to principal component analysis (PCA) for identifying generator coherency. The proposed method is demonstrated on IEEE two-area test system.read more
Citations
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Proceedings ArticleDOI
A Synchrophasor-Based Decision Tree Approach for Identification of Most Coherent Generating Units
Mohammad Hossein Rezaeian Koochi,Pooria Dehghanian,Saeid Esmaeili,Payman Dehghanian,Shiyuan Wang +4 more
TL;DR: An approach for identification of the most coherent generating units is proposed which exploits a decision tree (DT) algorithm based on synchronized data measured by phasor measurement units (PMUs) so as to provide accurate decisions for almost all possible disturbances in power systems.
References
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Journal ArticleDOI
A Comparative Assessment of Two Techniques for Modal Identification From Power System Measurements
TL;DR: In this paper, two modal identification methods are examined: Prony analysis and a method based on the Hilbert transform, and some structural differences exist between the two methods, whereas the Hilbert method provides a more general solution.
Generator coherency and area detection in large power systems
TL;DR: In this paper, a new general approach for defining coherent generators in power systems based on the coherency in low frequency inter-area modes is proposed, where the disturbance is considered to be distributed in the network by applying random load changes which is the random walk representation of real loads instead of a single fault.
Journal ArticleDOI
Tracing generator coherency indices using the continuation method: a novel approach
TL;DR: A new approach using the continuation method to trace the loci of the coherency indices of the slow modes in the system with respect to variation in system conditions to obtain the updated co herency information between generators is presented.
Journal ArticleDOI
Generator coherency and area detection in large power systems
TL;DR: In this article, a new general approach for defining coherent generators in power systems based on the coherency in low-frequency inter-area modes is proposed, where the disturbance is considered to be distributed in the network by applying random load changes which is the random walk representation of real loads instead of a single fault.
Journal ArticleDOI
Zolotarev polynomials and optimal FIR filters
Miroslav Vlcek,Rolf Unbehauen +1 more
TL;DR: The algebraic form of Zolotarev polynomials refraining from their parametric representation is introduced and a recursion giving an explicit access to the impulse response coefficients is presented.
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