1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)最新文献_第10页

Study of extruded power cable insulation anisotropy by means of electrical treeing growth tests 用电气树生长试验研究挤压电力电缆绝缘各向异性

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807856

F. Guastavino, E. Torello, C. Lonzar, A. Strignano

{"title":"Study of extruded power cable insulation anisotropy by means of electrical treeing growth tests","authors":"F. Guastavino, E. Torello, C. Lonzar, A. Strignano","doi":"10.1109/CEIDP.1999.807856","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.807856","url":null,"abstract":"The effects of anisotropy in samples of EPR insulating compound taken from an HV power cable have been studied analysing suitable electrical tree growth parameters. Certain samples were cut in the radial direction R, others in the longitudinal and tangential direction L and T with respect to the cable extrusion axis. Point plane geometry specimens were obtained inserting 5 /spl mu/m tip radius needles into such samples by means of a special hot moulding process. As the adhesion between needle tip and EPR compound could influence the final treeing tests results, the needle insertion procedure and the hot moulding process were optimised. The average Tree Inception Voltage (TIV) and the average Breakdown Voltage (BDV) were measured, during AC ramp voltage tests, for each of the three types of specimens. Finally the Time-to-breakdown (Tbd) was recorded during 15 kV AC constant voltage tests, in the three cases. The overall results (BDV and Tbd) clearly indicate that R specimens offer a \"resistance\" to treeing growth higher than L ones, while the T specimens behaviour is in between. Therefore it is concluded that, in the bulk of the investigated cable insulation, a significant anisotropy exists. The potential of the above outcome (data and testing procedures) for improving the overall design and/or the manufacturing process of extruded cables for energy transmission applications is recalled.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130713405","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

A digital image processing method for estimating the level of hydrophobicity of high voltage polymeric insulating materials 一种用于估计高压聚合物绝缘材料疏水性水平的数字图像处理方法

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807915

M. Berg, R. Thottappillil, V. Scuka

引用次数: 12

Impulse performances of cable terminations employing stress grading accessories 采用应力分级附件的电缆终端的脉冲性能

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804612

C. Petrarca, L. Egiziano, V. Tucci, M. Vitelli

引用次数: 1

Influence of harmonics in system voltage on metal oxide surge arrester diagnostics 系统电压谐波对金属氧化物避雷器诊断的影响

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807862

H. Zhu, M. Raghuveer

引用次数: 29

Surface-enhanced thermal pulse measurements of the thermal and electrical properties of polyimide films 聚酰亚胺薄膜热学和电学性能的表面增强热脉冲测量

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804589

A. Dereggi, P. Bloss, E. Hobble, H. Schafer

引用次数: 0

Determination of particle trajectory in gas insulated bus duct by Monte-Carlo technique 用蒙特卡罗技术测定气体绝缘母线管道内粒子轨迹

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804672

J. Amarnath, Bikram Pal Singh, S. Kamaksaiah, C. Radhakrishna

{"title":"Determination of particle trajectory in gas insulated bus duct by Monte-Carlo technique","authors":"J. Amarnath, Bikram Pal Singh, S. Kamaksaiah, C. Radhakrishna","doi":"10.1109/CEIDP.1999.804672","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804672","url":null,"abstract":"A method based on particle motion is proposed to determine the particle trajectory in Gas Insulated Substation (GIS) or Gas Insulated Busduct (GIB). In order to determine the movement of a particle in a GIB, an inner electrode diameter of 55 mm and outer enclosure diameter of 152 mm was considered. Aluminium and copper wires of 0.5 mm/10 mm were considered to be present on the enclosure surface. The motion of the wire (particle) was simulated using the charge acquired by the particles, the macroscopic field at the particle site, the drag coefficient, Reynold's number and coefficient of restitution. The distance travelled by the particle, calculated using the appropriate equations, is found to be in good agreement with the published work for a given set of parameters. The results are also presented for other set of parameters. In order to determine the random behaviour of moving particles, the calculation of movement in axial and radial directions was done at every time step using rectangular random numbers. Typically for Aluminium wire for a bus duct voltage of 100 kV RMS, the movement of the particle (0.5 mm/10 mm) for 2 sec was computed to be 26.02 mm in axial and 1002.3 mm in radial directions. Similar calculation is extended for a typical 220 kV (RMS) Gas Insulated Busduct.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127691719","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: 10

3-D and 1-D dynamics of slender liquid jets: linear analysis with electric field and accuracy of 1-D models near the breakup 细长液体射流的三维和一维动力学:电场线性分析及破裂附近一维模型的精度

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804659

F. García, A. Castellanos

引用次数: 3

Breakdown characteristics in transformer oil under the controlled effect of thermal and electric strength 热、电强度控制下变压器油的击穿特性

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807837

C. Lorthongkam, K. Masarat, K. Petcharaks

引用次数: 0

Study of pressure and temperature dependence of electrical properties in new intrinsic semiconducting polyacene quinone radical polymer 新型本征半导体聚苯二烯醌自由基聚合物电性能的温度和压力依赖性研究

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804649

Fan Yong, Z. Weiguo, L. Qingquan

引用次数: 0

Observations of intrinsic and UV-light initiated partial discharges (PD) in thin polyethersulfone (PES) foils 薄聚醚砜(PES)箔中本征放电和紫外光引发局部放电的观察

1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804638

K. Hodyr, H.M. Banford, R. Fouracre

引用次数: 2