Study on Parameter Calculation of 1000MW Hydro-generator based on Field-circuit Coupled Finite Element Method

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Zhang, Yanyan^1 ; Wang, Aihua^2 ; Gao, Nannan^1 ; Li, Hongbo^1 ; Huang, Jinxin^1 ; Si, Tailong^1 ; Wang, Lei^1

State Grid of China Technology College, Jinan

250002, China^1

Shandong Electric Power Engineering Consulting Institute Co., Ltd., Jinan

250013, China^2

关键词: Calculation results;    External circuits;    Field-circuit coupled;    Generator parameters;    Hydro generator;    Parameter calculation;    Synchronous reactances;    Two Dimensional (2 D);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012072/pdf
DOI  :  10.1088/1757-899X/486/1/012072

来源: IOP

【 摘 要 】

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.