|本期目录/Table of Contents|

[1]姚缨英,刘广.等效时谐耦合场分析水轮发电机负序运行能力[J].电机与控制学报,2011,(11):33-39.
 YAO Ying-ying,LIU Guang.Analysis of negative sequence ability of hydro-generator based on equivalent time-harmonic coupled finite-element method[J].,2011,(11):33-39.
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等效时谐耦合场分析水轮发电机负序运行能力(PDF)
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
期数:
2011年11
页码:
33-39
栏目:
出版日期:
2011-11-20

文章信息/Info

Title:
Analysis of negative sequence ability of hydro-generator based on equivalent time-harmonic coupled finite-element method
作者:
姚缨英; 刘广;
浙江大学电气工程学院;
Author(s):
YAO Ying-yingLIU Guang
College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China
关键词:
水轮发电机 负序运行 耦合场 有限元 阻尼绕组
Keywords:
hydro-generators negative sequence coupled-field finite-element damper winding
分类号:
TM312
DOI:
-
文献标志码:
A
摘要:
为研究水轮发电机的稳态负序运行能力,根据电磁场和传热学的相关理论,在考虑阻尼绕组气隙的基础上建立水轮发电机电磁场和温度场相耦合的二维有限元模型;用相对运动等效的方法处理转子的旋转问题,建立等效时谐场分析负序电流在转子中产生的涡流,得到发电机在负序稳态运行时阻尼绕组的涡流损耗分布;并将损耗结果耦合到温度场中最终得到精确的阻尼绕组温度分布。以一台容量为250 MW的水轮发电机为例,验证所提方法的正确性,经计算表明该电机具有9%稳态负序运行能力。
Abstract:
To study the negative sequence capacity of hydro-generator,the 2-D electromagnetic and thermal finite-element models which have considered the damper air-gap between the damper windings and the pole shoe were established based on the theories of electromagnetic and heat transfer.For the rotation of the rotor,an equivalent method was adopted.After the eddy current loss distribution of the damper windings was got,a coupling method was taken to apply the eddy current loss to the thermal field in or...

参考文献/References:

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备注/Memo

备注/Memo:
国家自然科学基金(50877070)
更新日期/Last Update: 2012-04-11