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三峡水轮发电机全定子非线性热–流体耦合网络模型研究
28 8 Vol.28 No.8 Mar.15, 2008
136 2008 3 15 Proceedings of the CSEE ©2008 Chin.Soc.for Elec.Eng.
0258-8013 (2008) 08-0136-07 TM 312 A 470 40
⋅
–
1 1 1 2 2
(1 102206
2 100084)
Research on the Nonlinear Thermal-liquid Coupled Network
Model of Whole Stator of Three-gorge Generator
1 1 1 2 2
WANG Hong-yu , LI He-ming , LUO Ying-li , SU Peng-sheng , WANG Xiang-heng
(1. College of Electric Electronic Engineering, North China Electric Power University, Changping District, Beijing 102206, China;
2. Department of Electrical Engineering, Tsinghua University, Haidian District, Beijing 100084, China)
ABSTRACT: To calculate thermal field of water-cooled stator
of hydro-generator, this paper presents a model of non-linear
thermal-liquid coupled network of Three-gorge hydro-
generator’s whole stator. The thermal-resistances parameters of
the network model were gotten from calculating the part model
of stator by 3D finite-element method, which can improve the
–
accurateness of thermal-resistance calculation. Considering the
varying of the resistance-rate of copper and the convection 0
coefficients on the surface between water and copper with
temperature, the equation of coupled network is nonlinear. This
model overcomes the problem that so
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