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Title: Non-Linear Analysis of Sudden 3-Phase Short-Circuit in a Synchronous Generator
Authors: INOUE, Yoshiaki
UEDA, Yoshisuke
UENOSONO, Chikasa
Issue Date: 31-Mar-1984
Publisher: Faculty of Engineering, Kyoto University
Journal title: Memoirs of the Faculty of Engineering, Kyoto University
Volume: 46
Issue: 1
Start page: 25
End page: 39
Abstract: The present paper investigates the saturation effect on a sudden 3-phase short-circuit which occurs in a salient-pole synchronous generator used in Kyoto University's model power transmission system. Since the magnetic saturation occurs primarily in the pole-core of the machine, the saturation is taken into account in deriving the directaxis equivalent circuit. First, we make a direct-axis saturation model and then, based upon it, derive a differential equation which regulates flux-linkages under a sudden 3-phase short-circuit condition. With the same degree of accuracy as in the conventional linear theory, this equation can be separated into a set of linear equations which can regulate the armature flux-linkages, and a non-linear differential equation which can regulate the field flux-linkage. By means of such theoretical considerations, simulations and experiments, we clarify how the saturation effects both the amplitudes and the time-constants of the alternating- and the direct-current components of short-circuit currents.
URI: http://hdl.handle.net/2433/281261
Appears in Collections:Vol.46 Part 1

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