A Comparison of EMT, Dynamic Phasor, and Traditional Transient Stability Models
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Date
2014-10-29
Authors
Yang, Rae Rui Ooi
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Abstract
This thesis presents a transient stability method using dynamic phasors. This method can be used to investigate low frequency (<5Hz) and sub-synchronous frequency (5Hz-60Hz) oscillations. It has major advantages as compared to traditional transient stability method and EMT method. It allows modeling of higher-frequency oscillation possible using time domain simulations, which is not achievable with conventional method. It also can be simulated at much larger time step as compared to PSCAD/EMTDC simulation. Comparison of the results with traditional model and detailed EMT model are also present, and they show very accurate results at frequency ranges up to 60Hz.
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Keywords
Transient stability analysis, dynamic phasor, SMIB, Single Machine Infinite Bus, sub-synchronous, sub-synchronous resonance, IEEE First Benchmark model for sub-synchronous analysis