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[1]武玉才,王逸仙,徐乾杰,等.基于励磁阶跃法的汽轮发电机转子绕组匝间短路故障诊断[J].电机与控制学报,2017,21(09):22-30.[doi:10.15938/j.emc.2017.09.004]
 WU Yu-cai,WANG Yi-xian,XU Qian-jie,et al.Diagnosis of inter-turn short circuit fault in rotor winding of turbo generator using excitation step method[J].,2017,21(09):22-30.[doi:10.15938/j.emc.2017.09.004]
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基于励磁阶跃法的汽轮发电机转子绕组匝间短路故障诊断(PDF)
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
21
期数:
2017年09
页码:
22-30
栏目:
出版日期:
2017-09-01

文章信息/Info

Title:
Diagnosis of inter-turn short circuit fault in rotor winding of turbo generator using excitation step method
作者:
?武玉才1 王逸仙1 徐乾杰1 徐剑2
?(1. 华北电力大学 电气与电子工程学院,河北 保定 071003;2. 国网福建省电力有限公司,福建 福州 350003)
Author(s):
?WU Yu-cai 1 WANG Yi-xian 1 XU Qian-jie 1 XU Jian 2
?(1. School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,China; 2. Fujian Electric Power Co. ,Ltd. ,Fuzhou 350003,China)
关键词:
转子绕组匝间短路 Ansoft 阶跃电压 励磁电流 上升速度 离线检测
Keywords:
short circuit of field windings Ansoft step voltage exciting current rising speed offline detection
分类号:
TM 311
DOI:
10.15938/j.emc.2017.09.004
文献标志码:
A
摘要:
?对转子绕组匝间短路故障的快速、准确检测可以缩短故障处理时间,降低停机成本。首先分析了匝间短路对励磁回路暂态阻抗参数的影响,预测当发电机出现转子绕组匝间短路后,在阶跃电压作用下,励磁电流的上升速度将变快。为了验证该设想,利用有限元分析软件建立了一台 300 WM 汽轮发电机的仿真模型,对比了短路程度、短路位置对阶跃励磁电压作用下的励磁电流上升速度的影响,同时研究了被短路回路电流、阻尼电流以及定子绕组并联支路环流的变化规律。仿真结果验证了理论分析的正确性,最终提出了一种新型汽轮发电机转子绕组匝间短路故障检测方法。
Abstract:
Fast and accurate detection of rotor winding inter turn short circuit fault can shorten the processing time and reduce the cost. Influence of inter-turn short circuit in excitation circuit on transient impedance parameter was analyzed,and it was predicted that,under the action of step voltage,the rise speed of the excitation current will become faster when inter turn short circuit occurs in generator rotor winding. In order to verify the assumption,a simulation model of a 300 WM turbine generator was established using a finite element analysis software,the excitation current rising speeds under the step excitation voltage were compared considering the variation of short circuit level and position,at the same time,the variation of the currents in the short-circuit loop,the damping loop and the stator winding parallel branches were studied. The simulation results verified the correctness of the theoretical analysis. A new detection method was proposed for rotor winding inter-turn short circuit fault in turbo generator

参考文献/References:

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相似文献/References:

[1]武玉才,李永刚,冯文宗,等. 汽轮发电机转子绕组短路产生的不平衡磁拉力研究[J].电机与控制学报,2015,19(03):37.[doi:10. 15938/j. emc.2015.03.007]
 WU Yu-caiLI Yong-gnagFENG Wen-zoneZHANG Wen-jing. Analysis on unbalanced magnetic pull generated by turn-to-turnshort circuit of rotor windings within turbine generator[J].,2015,19(09):37.[doi:10. 15938/j. emc.2015.03.007]

备注/Memo

备注/Memo:
收稿日期: 2016 - 09 - 29
基金项目: 河北省自然科学基金( E2016502031) ; 中央高校基本科研业务费专项资金资助( 2017MS106)
作者简介: 武玉才( 1982—) ,男,博士,副教授,研究方向为大型发电机状态监测与故障诊断; 王逸仙( 1990—) ,女,硕士,研究方向为大型发电机状态监测与故障诊断; 徐乾杰( 1992—) ,男,硕士,研究方向为大型发电机状态监测与故障诊断; 徐 剑( 1980—) ,男,硕士,高级工程师,研究方向为电网设备状态评价和分析诊断。
更新日期/Last Update: 2018-02-06