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A new analysis of the composite insulator flashover 复合绝缘子闪络的新分析
装备机械 Pub Date : 2001-11-19 DOI: 10.1109/ISEIM.2001.973655
An Ling, J. Xiuchen, Zhu Yu, Han Zhen-dong, Chen Ya-zhu
{"title":"A new analysis of the composite insulator flashover","authors":"An Ling, J. Xiuchen, Zhu Yu, Han Zhen-dong, Chen Ya-zhu","doi":"10.1109/ISEIM.2001.973655","DOIUrl":"https://doi.org/10.1109/ISEIM.2001.973655","url":null,"abstract":"The composite insulator is a kind of new insulator developed in the mid 1960s. The faults of the composite insulator have been divided into three kinds including bird streamer flashover, lightning flashover and contamination flashover. The bird streamer is the main fault source that happens during the dynamic defecation processing of birds at dawn. But on the basis of experiments, it is proved that some flashover at dawn is due to the uniform distribution voltage. The dry high voltage part of the composite insulator bears relatively high voltage. When salt solution with different concentration, equal to different parallel resistance, was imbrued on the composite surface nearest to the power line, the distributed voltage of the whole composite insulator would change. The voltages of sheds near the power line increase more than the others. Therefore long-term effect under such conditions induces partial flashover, even power fault. Finally it is suggested that the high voltage part of the composite insulator should be improved.","PeriodicalId":71964,"journal":{"name":"装备机械","volume":"43 1","pages":"305-308"},"PeriodicalIF":0.0,"publicationDate":"2001-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75732727","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: 0
Interfacial charge behavior in SXLPE/XLPE laminate SXLPE/XLPE层压板界面电荷行为
装备机械 Pub Date : 2001-11-19 DOI: 10.1109/ISEIM.2001.973715
J. Ko, J. Nam, K. Suh
{"title":"Interfacial charge behavior in SXLPE/XLPE laminate","authors":"J. Ko, J. Nam, K. Suh","doi":"10.1109/ISEIM.2001.973715","DOIUrl":"https://doi.org/10.1109/ISEIM.2001.973715","url":null,"abstract":"Space charge distributions in silane crosslinked polyethylene (SXLPE)/crosslinked polyethylene (XLPE) laminates were investigated using a pulsed electroacoustic (PEA) method. XLPE shows heterocharge while SXLPE shows homocharge. Positive charge is accumulated at the interface of SXLPE/XLPE laminate when the applied electric field is more than 20 kV/mm. The charge profile at various temperatures was also acquired using a temperature-controllable PEA system. Although the applied electric field is only 8.6 kV/mm, positive interfacial charge starts to appear near 50/spl deg/C.","PeriodicalId":71964,"journal":{"name":"装备机械","volume":"42 9","pages":"509-512"},"PeriodicalIF":0.0,"publicationDate":"2001-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/ISEIM.2001.973715","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72542179","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: 0
Influence of swarming pulsive microdischarge on tree degradation 群脉冲微放电对树木退化的影响
装备机械 Pub Date : 2001-11-19 DOI: 10.1109/ISEIM.2001.973748
Y. Ehara, H. Kishida, T. Ito
{"title":"Influence of swarming pulsive microdischarge on tree degradation","authors":"Y. Ehara, H. Kishida, T. Ito","doi":"10.1109/ISEIM.2001.973748","DOIUrl":"https://doi.org/10.1109/ISEIM.2001.973748","url":null,"abstract":"In treeing degradation, discharges in tree channel through void, it is thought that treeing process is difference between the case of occurrence of SPMD (swarming pulsive microdischarge) before tree inception and no occurrence of SPMD. In this study, treeing samples are separated the SPMD sample and the non-SPMD sample, there are compared discharge magnitude, discharge luminescence, the tree growing rate and the density of tree channels.","PeriodicalId":71964,"journal":{"name":"装备机械","volume":"50 1","pages":"627-630"},"PeriodicalIF":0.0,"publicationDate":"2001-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74982417","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: 1
Numerical analysis of space charge distribution in polypropylene film under AC high field 交流强电场作用下聚丙烯薄膜空间电荷分布的数值分析
装备机械 Pub Date : 2001-11-19 DOI: 10.1109/ISEIM.2001.973593
M. Fujii, M. Fukuma, T. Tokoro, Y. Muramoto, N. Hozumi, M. Nagao
{"title":"Numerical analysis of space charge distribution in polypropylene film under AC high field","authors":"M. Fujii, M. Fukuma, T. Tokoro, Y. Muramoto, N. Hozumi, M. Nagao","doi":"10.1109/ISEIM.2001.973593","DOIUrl":"https://doi.org/10.1109/ISEIM.2001.973593","url":null,"abstract":"AC dissipation current waveforms of polyethylene and polypropylene films show nonlinear distortion in AC high-field region. This non-linearity was supposed to be related to the behavior of AC space charge formation in the sample. However, the measurement of AC space charge distribution is not so easy due to the resolution limit of the space charge measurement. We examined space charge distribution in biaxially oriented polypropylene (BOPP) film under AC high-field from numerical analysis. As a consequence, it is suggested that injected carriers from the electrodes are trapped near the interface region, and bring about the space charge evolution. This would take place periodically under AC voltage, repeating space charge formation and extinction.","PeriodicalId":71964,"journal":{"name":"装备机械","volume":"14 1","pages":"156-159"},"PeriodicalIF":0.0,"publicationDate":"2001-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80301717","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: 1
Insulation condition estimation of distribution power cables by on-line and off-line diagnostics 基于在线和离线诊断的配电电缆绝缘状态评估
装备机械 Pub Date : 2001-11-19 DOI: 10.1109/ISEIM.2001.973716
J. Smit
{"title":"Insulation condition estimation of distribution power cables by on-line and off-line diagnostics","authors":"J. Smit","doi":"10.1109/ISEIM.2001.973716","DOIUrl":"https://doi.org/10.1109/ISEIM.2001.973716","url":null,"abstract":"Fundamental aspects of different on-site PD diagnostics are evaluated to determine their information transferability. In particular, using laboratory investigation and field tests, where different insulation defects of PILC and XLPE cable insulation and accessories are analyzed by PD on-line and off-line methods, the complementarity of these PD diagnostics is discussed.","PeriodicalId":71964,"journal":{"name":"装备机械","volume":"39 1","pages":"513-517"},"PeriodicalIF":0.0,"publicationDate":"2001-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84946599","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: 2
Application of dielectric interlayer polarization in dielectric testing 介电层间极化在介电测试中的应用
装备机械 Pub Date : 2001-11-19 DOI: 10.1109/ISEIM.2001.973635
Zhou Wenjun, Gao Xiang, Duan Rui
{"title":"Application of dielectric interlayer polarization in dielectric testing","authors":"Zhou Wenjun, Gao Xiang, Duan Rui","doi":"10.1109/ISEIM.2001.973635","DOIUrl":"https://doi.org/10.1109/ISEIM.2001.973635","url":null,"abstract":"This paper researches the influence of an interlayer polarization about the dielectric characteristics of the multi-layer dielectric bodies. By using a physical model to simulate interlayer polarization found testing the tg /spl delta/-f of a multi-layer dielectric body could hardly detect the dielectric deficiency of some layer. And according to the character of multi-layer dielectric bodies, a higher sensibility dielectric testing method that uses absorbing current is put forward theoretically.","PeriodicalId":71964,"journal":{"name":"装备机械","volume":"31 1","pages":"248-250"},"PeriodicalIF":0.0,"publicationDate":"2001-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80940872","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: 0
Epoxy/mica insulation condition assessment using AC current method 交流电流法评价环氧树脂/云母绝缘状态
装备机械 Pub Date : 2001-11-19 DOI: 10.1109/ISEIM.2001.973775
Y. Hao, Guoli Wang, Hengkun Xie
{"title":"Epoxy/mica insulation condition assessment using AC current method","authors":"Y. Hao, Guoli Wang, Hengkun Xie","doi":"10.1109/ISEIM.2001.973775","DOIUrl":"https://doi.org/10.1109/ISEIM.2001.973775","url":null,"abstract":"In this paper, accelerated multistresses aging tests in the laboratory have been conducted on electric machine stator epoxy/mica insulation. In different aging stages, AC current tests and breakdown tests were performed. The characteristics of AC current of stator insulation were analyzed and the voltage U/sub pi2/, at which the second point of current rapid increase appears, was investigated. The correlation between the voltage U/sub pi2/ and the residual breakdown voltage was also analyzed.","PeriodicalId":71964,"journal":{"name":"装备机械","volume":"16 1","pages":"705-708"},"PeriodicalIF":0.0,"publicationDate":"2001-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78015288","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: 1
Experience of condition based maintenance for power equipment insulation 有电力设备绝缘状态维修经验
装备机械 Pub Date : 2001-11-19 DOI: 10.1109/ISEIM.2001.973613
Yin Dejun, Liu Beiying
{"title":"Experience of condition based maintenance for power equipment insulation","authors":"Yin Dejun, Liu Beiying","doi":"10.1109/ISEIM.2001.973613","DOIUrl":"https://doi.org/10.1109/ISEIM.2001.973613","url":null,"abstract":"The reliability and stability of portable insulation testing instruments for energized equipment are analyzed. It is better to use the comparative method to suppress the environmental interferences. The higher cost performance ratio of portable test instruments than the centralized on-line monitoring system is mentioned.","PeriodicalId":71964,"journal":{"name":"装备机械","volume":"768 1","pages":"198-200"},"PeriodicalIF":0.0,"publicationDate":"2001-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76937493","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: 2
Space charge and electrical ageing of polymers in humid conditions 潮湿条件下聚合物的空间电荷和电老化
装备机械 Pub Date : 2001-11-19 DOI: 10.1109/ISEIM.2001.973694
D. Das-Gupta
{"title":"Space charge and electrical ageing of polymers in humid conditions","authors":"D. Das-Gupta","doi":"10.1109/ISEIM.2001.973694","DOIUrl":"https://doi.org/10.1109/ISEIM.2001.973694","url":null,"abstract":"Space charges appear to play an unfavourable role by providing electrical charge transport in insulating polymers. Dielectric studies, particularly in the low frequency range <10/sup -3/ Hz, thermally stimulated discharge current, thermal transient current and spatial distribution of space charges in the polymer bulk can provide useful information on the electrical health of insulating polymers, mostly in a non-destructive manner.","PeriodicalId":71964,"journal":{"name":"装备机械","volume":"23 1","pages":"427-433"},"PeriodicalIF":0.0,"publicationDate":"2001-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81370303","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: 2
Synthetic evaluation for aging of solid insulation in power transformer 电力变压器固体绝缘老化的综合评价
装备机械 Pub Date : 2001-11-19 DOI: 10.1109/ISEIM.2001.973806
Qian Zheng, W. Xiaorong, Gao Wensheng, Luo Chengmu, Yan Zhang
{"title":"Synthetic evaluation for aging of solid insulation in power transformer","authors":"Qian Zheng, W. Xiaorong, Gao Wensheng, Luo Chengmu, Yan Zhang","doi":"10.1109/ISEIM.2001.973806","DOIUrl":"https://doi.org/10.1109/ISEIM.2001.973806","url":null,"abstract":"An evaluation model for solid insulation of a power transformer is developed in this paper. The aging condition is identified . Having divided it into the normal aging and the abnormal aging, fuzzy theory is applied to assess the degree of aging and whether it is normal aging or abnormal aging. The results show that this model is effective for recognizing the status of solid insulation, and its result will be helpful to the prediction of residual life.","PeriodicalId":71964,"journal":{"name":"装备机械","volume":"4 1","pages":"829-832"},"PeriodicalIF":0.0,"publicationDate":"2001-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88229526","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: 1
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