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IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena最新文献

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Comparing pulse-height and pulse-shape analysis of partial discharge signals 局部放电信号的脉冲高度比较和脉冲形状分析
IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.641127
A. Contin, G. Montanari
{"title":"Comparing pulse-height and pulse-shape analysis of partial discharge signals","authors":"A. Contin, G. Montanari","doi":"10.1109/CEIDP.1997.641127","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.641127","url":null,"abstract":"This paper has the purpose to provide a first contribution to the investigation of the perspectives offered by partial-discharge (PD) pulse-shape recording systems in insulation diagnosis and quality control. In particular, the capability to provide a stochastic inference having accuracy levels comparable with those achievable by PD-pulse height and phase analyzers is inferred. This result is obtained varying typical set-up parameters for the two types of measuring systems, that is, dead time, gain and low-level discriminator. The behaviour of the two systems is compared resorting to the estimates of the scale and shape parameters of the Weibull distributions of pulse-charge height recorded from corona and surface discharges.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125506889","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: 7
Characterization of pulsating partial discharges in SF/sub 6/-N/sub 2/ mixture SF/sub - 6/-N/sub - 2/混合物脉动局部放电特性
IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.641130
Xiaolian Han, Yicheng Wang
{"title":"Characterization of pulsating partial discharges in SF/sub 6/-N/sub 2/ mixture","authors":"Xiaolian Han, Yicheng Wang","doi":"10.1109/CEIDP.1997.641130","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.641130","url":null,"abstract":"We have measured the pulsating partial discharges in a point-to-plane gap in SF/sub 6/-N/sub 2/ mixtures. The unconditional distributions of amplitude and time separation as well as the first-order conditional amplitude distributions of the measured partial discharge pulses have been determined.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"45 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130577172","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
Measurement of space charge distribution in epoxy resin after water absorption treatment 环氧树脂吸水后空间电荷分布的测量
IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.634554
Takashi Iizuka, Kazuo Yoshimoto, Hiroshi Takai, Kaori Fukunaga, Takashi Maeno
{"title":"Measurement of space charge distribution in epoxy resin after water absorption treatment","authors":"Takashi Iizuka, Kazuo Yoshimoto, Hiroshi Takai, Kaori Fukunaga, Takashi Maeno","doi":"10.1109/CEIDP.1997.634554","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.634554","url":null,"abstract":"Internal space charge behavior of an insulating material has been widely discussed recently, and many experiments were carried out by using the materials for dc cables, such as XLPE, LDPE and HDPE. Since epoxy resin is used for an insulation of high voltage apparatus and of electronic devices, we investigated the space charge behavior in it by the pulsed electroacoustic (PEA) method. When dc electric fields were applied to the craft resins treated by immersing them in water for 1 hr and 8 hrs at room temperature, positive and negative charges accumulated near the anode and cathode, respectively, and the charge distributions changed with the immersion time. In the case of the insulation-type epoxy resin, the charge distributions did not change after the treatment. At 100/spl deg/C, on the other hand, positive charges accumulated near the cathode and negative charges accumulated near the anode in a craft resin and in an insulation resin with filler. The internal space charge in the insulation-type epoxy resin without filler did not appear in any of the treatments.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130939135","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: 14
Effect of barrier in short air gaps under oscillatory impulse voltages 振荡冲击电压下短气隙阻挡的影响
IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.641179
R. Sarathi, C. S. Karri
{"title":"Effect of barrier in short air gaps under oscillatory impulse voltages","authors":"R. Sarathi, C. S. Karri","doi":"10.1109/CEIDP.1997.641179","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.641179","url":null,"abstract":"In this paper, the results of investigation carried out to understand the influence of barrier in a short air gap with the Rod-Rod configuration under oscillatory impulse voltages (UOIV, SBOIV, CBOIV) of different frequencies and dampings are presented. For the purpose of comparison, results obtained under AC, DC, LI and SI voltages are also provided.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129433974","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: 4
Charge accumulation in LDPE and XLPE conditioned at 80/spl deg/C under reduced pressure 在减压条件下，LDPE和XLPE在80/spl℃条件下的电荷积累
IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.634549
R. Fleming, M. Henriksen, J. Holbøll
{"title":"Charge accumulation in LDPE and XLPE conditioned at 80/spl deg/C under reduced pressure","authors":"R. Fleming, M. Henriksen, J. Holbøll","doi":"10.1109/CEIDP.1997.634549","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.634549","url":null,"abstract":"The effects of thermal conditioning, under reduced pressure, on space charge accumulation in planar LDPE and XLPE samples under DC stress, have been investigated. The samples were conditioned prior to voltage application by being held at 80/spl deg/C for 2-3 days in short circuit at rotary pump pressure. Some were then cooled to room temperature over a period of at least 6 hr, still under rotary pump pressure and in short circuit, while others were cooled to room temperature in less than 1.5 hr in the laboratory air. DC fields of 18 kV/mm were then applied at room temperature, and space charge accumulation was monitored as a function of time using the PEA (Denmark) and LIPP (Australia) techniques. Conditioning did not prevent space charge accumulation in either the LDPE or XLPE samples.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129581878","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
Identification of space charge in cable insulation: a new approach using molecular simulation 电缆绝缘中空间电荷的识别:一种分子模拟的新方法
IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.634560
M. Meunier, N. Quirke, D. Binesti, G. Martic, J. Fourmigue
{"title":"Identification of space charge in cable insulation: a new approach using molecular simulation","authors":"M. Meunier, N. Quirke, D. Binesti, G. Martic, J. Fourmigue","doi":"10.1109/CEIDP.1997.634560","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.634560","url":null,"abstract":"Electrical breakdown in high voltage cable insulation is correlated with the presence of a space charge. Beside experimental characterisation, physical and phenomenological modelling, an alternative approach is proposed, based on recent developments in computational chemistry, which can give information on each individual trap. The paper shows a way to relate the results from molecular simulation by ab-initio methods to some macroscopic features. First results show the trapping behaviour associated to different defects in the insulation.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132005732","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
Electrical characteristics of electron beam irradiated PEEK 电子束辐照PEEK的电学特性
IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.634588
S. Fujita, K. Shinyama, M. Baba
{"title":"Electrical characteristics of electron beam irradiated PEEK","authors":"S. Fujita, K. Shinyama, M. Baba","doi":"10.1109/CEIDP.1997.634588","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.634588","url":null,"abstract":"In this paper, the effects of electron beam irradiation on dielectric constant (/spl epsiv//sub r/), dissipation factor (tan/spl delta/), thermally stimulated current (TSC) and conduction current of polyetheretherketon (PEEK) were investigated. /spl epsiv//sub r/ and tan/spl delta/ of irradiated PEEK started to change from a higher temperature than unirradiated material. The peak temperature of TSC increased with increasing dose. Conduction current of irradiated PEEK became smaller than that of unirradiated material. The crosslinking of molecules caused by the electron beam irradiation affected the electrical properties.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121843077","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
Relationship between different mixing conditions and DC breakdown strength of high density polyethylene compound 不同混合条件与高密度聚乙烯复合材料直流击穿强度的关系
IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.634586
M. M. Ueki, M. Zanin
{"title":"Relationship between different mixing conditions and DC breakdown strength of high density polyethylene compound","authors":"M. M. Ueki, M. Zanin","doi":"10.1109/CEIDP.1997.634586","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.634586","url":null,"abstract":"In this work, we present results of the short-time dielectric breakdown test in high-density polyethylene (HDPE) containing 2.0 wt% of carbon black and 0.5 wt% of titanium dioxide mixed in different processing equipment, in a single screw extruder and in a co-rotational twin screw extruder. These additives are commonly used as pigments in polyolefin materials used as insulation in medium voltage cables. Thin film specimens were obtained by hot-compression, from materials compounded in these extruders. For the dielectric breakdown test, a DC voltage ramp rate of 500 V/sec. was applied to the samples which were immersed in a silicone oil bath at room temperature. The results were analyzed by the Weibull distribution. The Weibull shape and scale parameters were determined by Maximum Likelihood and Graphical Methods. The homogeneity of the pigments in the compounds was analyzed by optical microscopy. These results show that the breakdown strength depends on the mixing conditions. The best results were obtained in materials mixed in a twin screw extruder.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125123850","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
Electrical tree initiation due to bombardment of metastable excited Ar 亚稳激发氩轰击引起的电树起始
IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.634620
N. Shimizu
{"title":"Electrical tree initiation due to bombardment of metastable excited Ar","authors":"N. Shimizu","doi":"10.1109/CEIDP.1997.634620","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.634620","url":null,"abstract":"Ac tree initiation voltage of Ar-impregnated LDPE is much lower than vacuum-degassed LDPE, and even lower than normal (air-impregnated) LDPE. Injected electrons are accelerated in polymer free volume. In Ar-impregnated LDPE, the hot electrons collide with Ar atoms in free volume and excite them to metastable level. Metastable atom can return to ground state after transferring the energy by collision with free volume wall. The energy transferred from metastable atom breaks polymer bond of free volume wall, and creates micro cavity in short time.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125492173","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
Breakdown characteristics of a short airgap with conducting particle under composite voltages 复合电压下带导电微粒的短气隙击穿特性
IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI: 10.1109/CEIDP.1997.641144
R. Sarathi, M. Krishnamurthi, P. Reji
{"title":"Breakdown characteristics of a short airgap with conducting particle under composite voltages","authors":"R. Sarathi, M. Krishnamurthi, P. Reji","doi":"10.1109/CEIDP.1997.641144","DOIUrl":"https://doi.org/10.1109/CEIDP.1997.641144","url":null,"abstract":"In the present work, breakdown characteristics of short air gap of Sphere-Sphere configuration with artificially floating conducting metal particle under oscillatory impulse voltages (UOIV, SBOIV and CBOIV) of different frequencies and dampings have been studied. Also, the influence of the DC bias voltage on the breakdown characteristics under similar configuration with the composite voltage formed by superposition of DC with lightning and DC with switching impulse voltages are also presented. For the purpose of comparison, the studies have also been carried out under AC, DC, LI and SI voltages and presented.","PeriodicalId":176239,"journal":{"name":"IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125578419","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
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