2010 International Conference on High Voltage Engineering and Application最新文献_第4页

HVDC system performance with a neutral conductor 采用中性导体的高压直流系统性能

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640834

V. Jankov, Mark Stobart

引用次数: 8

Influence of serial choke on damping of switching transients in distribution transformers 串联扼流圈对配电变压器开关暂态阻尼的影响

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640773

J. Furgał, M. Florkowski, M. Fulczyk, P. Klys, M. Ostrogorska, W. Piasecki

引用次数: 2

High voltage magnitude measurement from corona sound by using neural network 利用神经网络测量电晕声的高压幅值

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640817

S. B. Sert, O. Kalenderli

引用次数: 0

The use of booster sheds to improve the performance of 800 kV multicone type insulators under heavy rain 利用升压棚提高800kv多锥型绝缘子在暴雨下的性能

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640720

O.B. Oliveira Filho, Jose Antonio Cardoso, Darcy Ramalho de Mello, Rogerio Magalhaes de Azevedo, S. Carvalho

{"title":"The use of booster sheds to improve the performance of 800 kV multicone type insulators under heavy rain","authors":"O.B. Oliveira Filho, Jose Antonio Cardoso, Darcy Ramalho de Mello, Rogerio Magalhaes de Azevedo, S. Carvalho","doi":"10.1109/ICHVE.2010.5640720","DOIUrl":"https://doi.org/10.1109/ICHVE.2010.5640720","url":null,"abstract":"Studies based on AC high voltage tests have been done at Cepel to investigate the performance of 800 kV busbar insulators under heavy wetting conditions. Insulators were tested as they are now used on site and also with different configurations of booster sheds. Images recorded by ultra-violet (UV) camera were used to help the investigations on the effectiveness of booster sheds. By comparing UV images of the insulator being stressed with high voltage under heavy rain with and without booster sheds, it was possible to observe how significant the reduction on the flashover formation process is when booster sheds are used. The effectiveness of booster sheds was also quantified by determining the disruptive discharge of the insulator with and without them. The results of these studies can also be considered as contribution to national and international standard technical committees to improving the standardized procedure for tests on ultra high voltage (UHV) insulators under heavy artificial rain. Subjects such as the clear definition of relevant UHV test procedure and test arrangements, including the use of UV camera, have to be taken into account.","PeriodicalId":287425,"journal":{"name":"2010 International Conference on High Voltage Engineering and Application","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133393749","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

Investigation of the effect of conductor temperature on AC power line corona 导体温度对交流电晕影响的研究

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640855

J. P. Holtzhausen, P. Pieterse, H. Vermeulen

引用次数: 1

Study on grounding design for lightning of tubular composite material towers in 110kV overhead transmission line 110kV架空输电线路管状复合材料塔防雷接地设计研究

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640725

Zhi-jun Li, Min Dai, Ding-xie Gu, S. Deng, Han-ming Li, Qian-hu Wei

引用次数: 4

Development of GIT partial discharge UHF online monitoring system GIT局部放电超高频在线监测系统的研制

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640795

Yanbin Xie, Ju Tang, Xiaoxing Zhang

{"title":"Development of GIT partial discharge UHF online monitoring system","authors":"Yanbin Xie, Ju Tang, Xiaoxing Zhang","doi":"10.1109/ICHVE.2010.5640795","DOIUrl":"https://doi.org/10.1109/ICHVE.2010.5640795","url":null,"abstract":"SF6 gas insulated transformer (GIT) is widely used in the urban power grid. The establishment of partial discharge (PD) on-line monitoring system is significant to grasp the running state of GIT accurately and guide its maintenance. According to the structure and operating characteristic of the field GIT, an outer ultra high frequency (UHF) microstrip patch antenna (MPA) sensor for detecting the partial discharge in field GIT was designed, some effective methods for expanding bandwidth are utilized in the design process, such as choosing the material, thickness, adding impedance matching and multi-tuning loop. The effective working bandwidth of the antenna is 340∼440 MHz, and the relative bandwidth is 25.6%, especially the maximal gain reaches 5.38dBi. MPA sensor was installed in the GIT insulator of cable section of ingoing line, fan duct, radiating pipe of 110kV and 10kV side. Online monitoring system for GIT was established and monitoring system software based on C# was developed. Through the operation of GIT substation in Xinmin street of Chongqing City, the results show that this online monitoring system can detect UHF GIT PD signal for a long time, and it provides a lot of reliable data for condition-based maintenance.","PeriodicalId":287425,"journal":{"name":"2010 International Conference on High Voltage Engineering and Application","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116239500","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

Influence of vegetable oil on the thermal aging rate of kraft paper and its mechanism 植物油对牛皮纸热老化速率的影响及其机理

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640746

Lijun Yang, R. Liao, Caixin Sun, Jianguo Yin, Mengzhao Zhu

{"title":"Influence of vegetable oil on the thermal aging rate of kraft paper and its mechanism","authors":"Lijun Yang, R. Liao, Caixin Sun, Jianguo Yin, Mengzhao Zhu","doi":"10.1109/ICHVE.2010.5640746","DOIUrl":"https://doi.org/10.1109/ICHVE.2010.5640746","url":null,"abstract":"With the development of new insulation materials, vegetable oil—the best substitute for mineral oil—has gradually been widely used in the liquid insulation of transformers. To investigate the influence of vegetable oil on the thermal aging rate of oil paper, Kraft paper impregnated with mineral oil and vegetable oil underwent thermally accelerated aging at three different temperatures. Degree Polymerization (DP) of Kraft paper was measured to indicate the aging degree of insulation paper. The aging rate of paper in mineral oil and vegetable oil was compared quantitatively, and results showed that vegetable oil retarded paper's degradation rate and extended its useful lifetime. The reasons contributing to such phenomenon were analyzed using X-ray Photoelectron Spectroscopy (XPS) and molecular simulation software. Due to the larger interaction force between water and natural ester molecules, water molecule was easily bonded with natural ester, weakening the hydrolysis process of cellulose. Cellulose was chemically modified by natural ester during thermal aging process, and the reactive - OH (hydroxyl) groups on the cellulose became esterified with fatty acid esters. The water molecule was firmly bounded to the ester groups on glucose produced by esterification. The long-chain fatty acid esterified to cellulose was parallel with cellulose chains and acted as a “water barrier” to further weaken the hydrolysis process.","PeriodicalId":287425,"journal":{"name":"2010 International Conference on High Voltage Engineering and Application","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123179230","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: 28

Icing performances of super-hydrophobic PDMS/Nano-silica hybrid coating on insulators 超疏水PDMS/纳米二氧化硅复合涂层在绝缘子上的覆冰性能

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640721

Yushun Zhao, Jian Li, Jianlin Hu, S. Grzybowski

引用次数: 11

On-line supervision of transformer on-load tap changer 变压器有载分接开关的在线监控

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640785

W. Gil, W. Grzybowski, Przemysław Wronek

引用次数: 1