Conference Record of the 2004 IEEE International Symposium on Electrical Insulation最新文献_第8页

Neutral ground resistor monitoring schemes 中性点接地电阻监测方案

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI: 10.1109/ELINSL.2004.1380608

M. T. Al-Hajri

引用次数: 7

Identification of three phase induction motor incipient faults using neural network 基于神经网络的三相异步电动机早期故障识别

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI: 10.1109/ELINSL.2004.1380432

A. Siddique, G. Yadava, B. Singh

{"title":"Identification of three phase induction motor incipient faults using neural network","authors":"A. Siddique, G. Yadava, B. Singh","doi":"10.1109/ELINSL.2004.1380432","DOIUrl":"https://doi.org/10.1109/ELINSL.2004.1380432","url":null,"abstract":"The induction motors are most widely used motors in industrial, commercial and residential sectors because of enormous merits of these over other types of available electrical motors. These motors work under various operating stresses, which deteriorate their motor conditions giving rise to faults. The early detection of these deteriorating conditions in incipient phase and its removal/correction is very necessary for the prevention of any external faults/failure of induction motors reducing repair costs and motor outage time. Fault detection using analytical methods is not always possible because it requires a perfect knowledge of the motor model. The artificial neural network techniques are rather easy to develop and to perform. These networks can be applied when the information about the system is obtained from measurements, which later can be used in the training procedures of the neural networks. Neural detectors can be designed from simulation or experimental tests. In the present paper the applicability/feasibility of artificial neural network (ANN) technique for the detection and identification of incipient faults in an induction motor has been explored. Radial basis function (exact fit) approach has been used for ANN training and test. The applicability of the graphical user interface (GUI) of neural network tool box under Matlab environment has been explored in this paper. The various types of faults have been considered. Three phase instantaneous voltages and currents are utilized in proposed approach. Simulated fault current and voltage data have been used for testing of trained network.","PeriodicalId":342687,"journal":{"name":"Conference Record of the 2004 IEEE International Symposium on Electrical Insulation","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117037994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Effects of voltage unbalance on induction motors 电压不平衡对感应电动机的影响

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI: 10.1109/ELINSL.2004.1380430

A. Siddique, G. Yadava, B. Singh

{"title":"Effects of voltage unbalance on induction motors","authors":"A. Siddique, G. Yadava, B. Singh","doi":"10.1109/ELINSL.2004.1380430","DOIUrl":"https://doi.org/10.1109/ELINSL.2004.1380430","url":null,"abstract":"This paper investigates the effects of different voltage magnitude unbalances with the same voltage unbalance factor (VUF) on the stator loss and rotor copper loss and total copper loss of three classes of three-phase induction motor. Under six different voltage magnitudes unbalance conditions, the copper losses of three different three-phase induction motor under full load conditions has been analyzed through simulation. Following the investigations, the importance of the positive-sequence voltage and the negative-sequence voltage has been pointed out. In the present work, the relative percentage increase in the stator copper loss, rotor copper loss and total copper losses have been computed for the motor working under unbalanced and balanced voltages. For this analysis Matlab environment using Simulink toolbox has been used. In this paper the three definitions (line voltage unbalance in percent-LVUR, phase voltage unbalance in percent-PVUR and voltage unbalance factor-VUF) of voltage magnitude unbalance have been considered. The operation of the induction motor has been considered at full load. The analysis shows the effects of resulting losses during unbalanced voltage supply. The increase in losses under unbalanced voltages leads to the necessity of derating the motor.","PeriodicalId":342687,"journal":{"name":"Conference Record of the 2004 IEEE International Symposium on Electrical Insulation","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121981285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 94

Partial discharge measurements in the three-layer dielectrics with a barrier 带阻挡层的三层电介质的局部放电测量

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI: 10.1109/ELINSL.2004.1380482

S. M. Lebedev, O. S. Gefle, Y. Pokholkov, E. Gockenbach, H. Borsi, V. Wasserberg, N. Abedi, J. Szczechowski

引用次数: 1

Analysis of PD phase-resolved images at low frequency of testing voltage 低频测试电压下PD相位分辨图像分析

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI: 10.1109/ELINSL.2004.1380493

B. Florkowska, P. Zydroń, M. Florkowski

引用次数: 7

On-line condition assessment of high voltage current transformers 高压电流互感器在线状态评估

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI: 10.1109/ELINSL.2004.1380510

V. R. Garcia-Colon, R. Linan-Garcia, M. Jacobo

引用次数: 8

On-line detection of winding deformation 卷绕变形在线检测

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI: 10.1109/ELINSL.2004.1380477

M. Alpatov

引用次数: 7

The simulation model for calculating the surge impedance of a tower 计算塔浪涌阻抗的仿真模型

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI: 10.1109/ELINSL.2004.1380581

Zhijin Zhang, W. Sima, Yongji Zhang, L. Shu

引用次数: 7

On line PD diagnostic on medium voltage motors and cable lines: useful tool for the maintenance manager 中压电机和电缆线路的在线PD诊断:维护经理的有用工具

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI: 10.1109/ELINSL.2004.1380497

Y. Aksenov, I. Arces, G. Noe

引用次数: 7

Sensitivity check for UHF PD detection on power transformers 电力变压器超高频局部放电检测的灵敏度检验

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI: 10.1109/ELINSL.2004.1380448

S. Meijer, E. Gulski, J. Smit, H. Reijnders

引用次数: 25