Abstract
The paper presents a description of the method and the results of calculating the leakage reactance of high-power synchronous generator end windings using the finite element method. This reactance is one of the components of the stator leakage reactance of synchronous generators. The calculations were carried out under the assumption of a three-dimensional field distribution in a synchronous generator. The thus calculated value of the leakage reactance of the end windings was compared with the calculation results obtained using traditional, analytical formulas known from the literature. The analysis of the influence of the reactance value of the end windings on the transient waveforms at a three-phase short-circuit of the stator windings was performed based on a two-dimensional field-circuit model.
Highlights
The basis for reliable simulation calculations of synchronous generators, operating alone or in the power system, is the determination of appropriate models and reliable parameters of these generators
A description of the method and the results of calculations of this reactance using the finite element method (FEM) under the assumption of a three-dimensional field model of a synchronous generator are presented in the paper
The paper focuses on the determination of the reactance of the end windings of a high-power synchronous generator based on the analysis of the electromagnetic field distribution in the end region, calculated with the use of FEM
Summary
The basis for reliable simulation calculations of synchronous generators, operating alone or in the power system, is the determination of appropriate models and reliable parameters of these generators. A description of the method and the results of calculations of this reactance using the finite element method (FEM) under the assumption of a three-dimensional field model of a synchronous generator are presented in the paper. Due to the complicated shape of the end windings, the use of such a measurement method is difficult to carry out and involves high costs, especially in the case of high-power machines For these reasons, different calculation methods are usually used to determine the leakage reactance of the stator end windings. The method of determining the leakage reactance of the end windings of the stator winding based on a three-dimensional model of a TWW-200-2A synchronous generator is presented
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