Open AccessStudy on Parameter Calculation of 1000MW Hydro-generator based on Field-circuit Coupled Finite Element Method
Author(s) -
Yanyan Zhang,
Aihua Wang,
Nannan Gao,
Hongbo Li,
Jiaqi Huang,
Tailong Si,
Lei Wang
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/486/1/012072
Subject(s) - stator , finite element method , reactance , electromagnetic coil , rotor (electric) , generator (circuit theory) , transient (computer programming) , damper , engineering , equivalent circuit , electromagnetic field , electrical impedance , field coil , control theory (sociology) , mechanics , power (physics) , electrical engineering , voltage , physics , structural engineering , computer science , control (management) , quantum mechanics , artificial intelligence , operating system
This paper mainly presents a field-circuit coupled finite element model (FEM) of a large hydro-generator for the study of generator parameters. In the model, the two-dimensional (2D) moving electromagnetic field finite element model is coupled with the external circuit model, and some influencing factors are taken into account, such as saturation of iron-core, rotation of rotor, distribution of stator windings and end rings of damper bars, as well as end-impedance of stator and rotor windings. Based on this model, the parameters of the 1000MW hydro-generator are calculated, and the steady-state, transient, and sub-transient reactances are obtained. Furthermore, the calculation results are compared with the designed values, and some meaningful conclusions are reached. Finally, the influences of different loads and power factors on saturated synchronous reactance are discussed.