PROJECT TITLE :
A Dynamic Coherency Identification Method Based on Frequency Deviation Signals
ABSTRACT:
This paper presents a new technique to dynamically confirm coherent generators and electrical areas of an interconnected Power System. The proposed methodology relies on dynamic frequency deviations of each generator and non-generator buses, with respect to the system nominal frequency. The proposed methodology 1) largely overcomes the limitations of the existing model-based and measurement-primarily based coherency identification methods, two) enables dynamic tracking of the coherency time-evolution, and three) provides noise immunity that is imperative in practical implementation. The method additionally promises the potential for real-time coherency calculation. The proposed methodology is applied to the sixteen-machine/68-bus NPCC system based mostly on time-domain simulation studies within the PSS/E platform and therefore the results are compared with those of the classical slow-coherency (model-based mostly) technique and a measurement-based method.
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