A Constant-Parameter Voltage-Behind-Reactance Synchronous Machine Model Based on Shifted-Frequency Analysis
Recently, the ideas of dynamic phasors and shifted-frequency analysis (SFA) have received renewed attention as a potential answer framework for the modeling of Power System parts and transients, versus using instantaneous time-domain variables or conventional phasors. In this paper, a replacement voltage-behind-reactance (VBR) synchronous machine model based on SFA is presented. Using dynamic phasors, the proposed model permits the employment of a a lot of larger range of step sizes to efficiently simulate electromagnetic and electromechanical transients. Moreover, the proposed model incorporates a constant-parameter (CP) stator interface, which is straightforward to implement and numerically more economical compared with the previous state-of-the-art models with rotor-position-dependent stator inductance matrices. Rigorous transient case studies demonstrate that the new model requires considerably fewer time steps than the traditional time-domain models, and is more efficient than the previously established variable-parameter SFA model.
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