Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)最新文献_第8页

Classification of PD patterns in XLPE cables under various soil conditions using statistical technique 用统计方法对不同土壤条件下交联聚乙烯电缆的PD模式进行分类

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995884

M. Mansor, A. Ghani, P. Ghosh

{"title":"Classification of PD patterns in XLPE cables under various soil conditions using statistical technique","authors":"M. Mansor, A. Ghani, P. Ghosh","doi":"10.1109/ELINSL.2002.995884","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.995884","url":null,"abstract":"Partial discharge (PD) is identified as a main factor contributing to the insulation deterioration in HV equipment including underground cable. This is the first time an attempt has been made to investigate the effect of soil thermal resistivity on PD activities in underground power cables. In this paper, a detailed experiment has been carried out on a simulated set up to study the effect of various soil conditions on the level of PD in an 11 kV, single core, 240 mm /sup 2/ XLPE cable. The PD parameters are measured with the help of Haefely Trench TE 571, PD measurement system using straight detection method. PD patterns obtained in the form of elliptical waveform are then analysed using statistical techniques. In this paper, the statistical pattern recognition technique has been successfully applied to classify the PD patterns obtained from the experiment under different soil conditions. Thus, classification of PD patterns aims at the recognition of discharges from a particular soil condition. This information is vital for estimating the harmful effect of the thermal property of soil on the level of PD and can lead to decision making like reconditioning of backfill material and adjustment in cable loading.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"63 1","pages":"74-78"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84688225","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: 9

Economic evaluation of cable replacement considering annual failure probability 考虑年失效概率的电缆更换经济性评价

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995977

T. Shimakage, K. Wu, T. Kato, T. Okamoto, Y. Suzuoki

引用次数: 6

Investigation of the ageing process in polymeric insulators by using improved Weibull statistics 基于改进威布尔统计的聚合物绝缘子老化过程研究

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995930

M. Uğur, A. Kuntman

{"title":"Investigation of the ageing process in polymeric insulators by using improved Weibull statistics","authors":"M. Uğur, A. Kuntman","doi":"10.1109/ELINSL.2002.995930","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.995930","url":null,"abstract":"Surface tracking on organic solid insulators is one of the main reasons for failure in high voltage (HV) systems. Due to various factors, such as humidity, pollution, ice load, increase in local voltage, etc., it is hard to make an estimation about the life of an insulator. For many years Weibull statistics have been widely used and accepted as a successful mathematical method to predict the remaining lifetime of an insulating material. The basic reliability function R(t) = e/sup (-/spl lambda/tm)/, where '/spl lambda/' is the scale and 'm' is the shape parameter, can perform well for certain conditions, however it might be insufficient in lifetime prediction in multi-variable conditions. In this research several tests have been performed according to IEC 587 Inclined Plane Test method to investigate the breakdown times of polymeric insulation materials under various external conditions generated artificially in laboratory. These factors seemed to reduce the lifetime of insulating materials up to 50-70 percent. A model based on Weibull statistics has been proposed for estimating the breakdown time of polymeric insulation material. By using appropriate parameters this improved model can make successful estimates within a reasonable accuracy in varying external conditions such as tensile stress or increased surface hydrophobicity, etc.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"28 1","pages":"275-279"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81885664","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: 6

Silicones for outdoor insulator maintenance 用于室外绝缘子维护的有机硅

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995926

J. Goudie

引用次数: 11

Kerr electro-optic measurements of space charge effects in high voltage pulsed propylene carbonate using parallel-plate electrodes 利用平行板电极对高压脉冲碳酸丙烯酯中空间电荷效应的克尔电光测量

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995935

A. Helgeson, M. Zahn

引用次数: 3

The effect of ATH and silica on tracking and erosion resistance of silicone rubber compounds for outdoor insulation ATH和二氧化硅对室外保温用硅橡胶胶料的沾痕性和耐冲蚀性的影响

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995929

L. Meyer, R. Omranipour, S. Jayaram, E. Cherney

引用次数: 24

On-line PD detection, requirements for practical use 在线PD检测，要求实用

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995902

J. van Bolhuis, E. Gulski, J. Smit

{"title":"On-line PD detection, requirements for practical use","authors":"J. van Bolhuis, E. Gulski, J. Smit","doi":"10.1109/ELINSL.2002.995902","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.995902","url":null,"abstract":"Because the energy market liberalisation forces utilities to cut costs, delayed replacement and smaller maintenance budgets have become goals for many utilities. Competing with this demand is the increased risk of liability for unexpected nondelivered energy. These two forces have stimulated research into the field of onsite and online diagnosis in order to determine the condition of a transformer at the least possible cost. One of the fields that has attracted attention is partial discharge measurements, as they are seen as a good indicator for local defects and incipient failure caused by such. This paper describes two onsite partial discharge methods that both use frequency information to to deal with noise and enable online measurements. One method uses VHF frequencies, the other uses UHF frequencies. Based on this comparison, a questionnaire was sent to several Dutch utilities asking them to specify how the see the relevance of partial discharge measurements and how they would implement it. The paper presents the conclusions from this questionnaire and the direction of development desired by the utilities.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"20 1","pages":"158-161"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73002059","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: 3

Application of statistical tools to the investigation of coil failures 统计工具在线圈失效调查中的应用

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995897

M. Stranges, J. Dymond, M. Aurnou

引用次数: 2

On the discharge phenomena in the 10%SF/sub 6/-90%N/sub 2/ gas mixture under fast oscillating impulse conditions 10%SF/sub - 6/-90%N/sub - 2/气体混合物在快振荡脉冲条件下的放电现象

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995964

S. Stangherlin, G. Salge, F. Koenig

引用次数: 1

Preparation and properties of epoxy-organically modified layered silicate nanocomposites 环氧有机改性层状硅酸盐纳米复合材料的制备及性能研究

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995955

T. Imai, Y. Hirano, H. Hirai, S. Kojima, T. Shimizu

引用次数: 47