Abstract
AbstractThe accuracy of synchronous generator’s reactance parameters is fundamental for power system stability analysis. This chapter proposes a new online identification method for synchronous generator’s quadrature-axis synchronous reactance X q with PMU (phasor measurement unit) steady-state data. In detail, based on the steady-state PMU data including the terminal voltage, terminal current, active power, reactive power, and power angle, the proposed method formulates the identification of X q as an optimization problem which aims to minimize the difference between the calculated terminal voltage and measured terminal voltage, and the objective is set as the sum of the square of the difference. The proposed optimization is solved by least square method. Simulation results with PSCAD verified the high accuracy of the proposed method. Furthermore, simulation results with field steady-state PMU data show the effectiveness of the proposed approach.KeywordsReactive PowerTime Domain MethodTerminal VoltageSynchronous GeneratorPhasor Measurement UnitThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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