2012 International Conference on High Voltage Engineering and Application最新文献_第8页

The transformer fault management information system design based on the risk assessment 基于风险评估的变压器故障管理信息系统设计

2012 International Conference on High Voltage Engineering and Application Pub Date : 2012-11-26 DOI: 10.1109/ICHVE.2012.6357088

Wei Hu, Haitao Yang, Jia Yan, Xiao-hui Zhu

引用次数: 4

Influence of polarity on breakdown voltage of gases in divergent electric field under lightning impulse voltages 雷击电压作用下发散电场中极性对气体击穿电压的影响

2012 International Conference on High Voltage Engineering and Application Pub Date : 2012-11-26 DOI: 10.1109/ICHVE.2012.6357035

F. Sadaoui, A. Beroual

引用次数: 7

Characterization of acoustic signal produced by partial discharge in insulation oil 绝缘油局部放电产生的声信号特性

2012 International Conference on High Voltage Engineering and Application Pub Date : 2012-11-26 DOI: 10.1109/ICHVE.2012.6357140

L. Tong, L. Zhihong, L. Ruihai, Zhang Xiaohong, LI Yancheng, Li Ziyun, Du Jinyang, Gao Junguo

引用次数: 0

The initiation phenomena of electrical treeing in XLPE cable insulation 交联聚乙烯电缆绝缘中电气树萌生现象的研究

2012 International Conference on High Voltage Engineering and Application Pub Date : 2012-11-26 DOI: 10.1109/ICHVE.2012.6357142

Minghui Bao, Shiying Tang, Junjia He, Xiao-ran Yin, Qian Wang, Gaolin Wu, Yan Yang

{"title":"The initiation phenomena of electrical treeing in XLPE cable insulation","authors":"Minghui Bao, Shiying Tang, Junjia He, Xiao-ran Yin, Qian Wang, Gaolin Wu, Yan Yang","doi":"10.1109/ICHVE.2012.6357142","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357142","url":null,"abstract":"Since the XLPE cables are widely used in power system and electrical treeing is one of the major breakdown mechanisms for solid dielectrics subjected to high electrical stresses, it's of great importance to study the electrical treeing phenomena in XLPE cable insulation for the improvement of safety and reliability of power system. The process of electrical treeing includes three stages: initiation, propagation and breaking down. In this paper, the initiation phenomena of electrical treeing in XLPE cable insulation are studied. XLPE samples are obtained from a commercial XLPE power cable, in which electrical trees have been grown from pin to plane. The process of electrical treeing in XLPE samples are uninterrupted recorded by an online microphotograph system. The growing time and structure of tree initiation subjected to various voltages, frequencies and pin-plane spacings are analyzed. The results show that trees in different structures have the similar initiation structure. With the larger voltage and shorter pin-plane spacing, the time for initiation was longer and less dispersed. The influence of frequency on initiation is relatively small.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"2 1","pages":"431-434"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88266569","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: 11

Preparation of SiC/LDPE nanocomposites surface modified by KH-560 and its space charge property KH-560改性SiC/LDPE纳米复合材料的制备及其空间电荷性能

2012 International Conference on High Voltage Engineering and Application Pub Date : 2012-11-26 DOI: 10.1109/ICHVE.2012.6357126

Quan Zhou, Chao Sun, Ke Wu, Di Zou, Jingshu Liao

引用次数: 1

Arbitrary waveform impedance spectroscopy for accurate contact-free dielectric characterization 用于精确无接触介质表征的任意波形阻抗谱

2012 International Conference on High Voltage Engineering and Application Pub Date : 2012-11-26 DOI: 10.1109/ICHVE.2012.6357019

Xiangdong Xu, T. Bengtsson, J. Blennow, S. Gubanski

{"title":"Arbitrary waveform impedance spectroscopy for accurate contact-free dielectric characterization","authors":"Xiangdong Xu, T. Bengtsson, J. Blennow, S. Gubanski","doi":"10.1109/ICHVE.2012.6357019","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357019","url":null,"abstract":"Solid dielectric material characterization is commonly performed through measurement of dielectric frequency response. A technique, called arbitrary waveform impedance spectroscopy (AWIS), has been developed as one of its modified versions. It is capable, among other features, of obtaining a broad dielectric response spectrum from one single measurement, provided the applied test voltage is rich in harmonic components. As AWIS is a technique, rather than an instrument, it can be optimized to reach signal to noise ratio in the 106 range. However, both the electrode arrangements as well as the accuracy of the measurement setup limit the precision of the characterization. An air reference method and a contact-free electrode arrangement are presented in this paper for enhancing the dielectric characterization accuracy through avoiding problems introduced by electrode contacts. It is shown that by performing a calibration with electrode gap filled with air under the same conditions as the material is tested, the air reference method can improve the measurement accuracy substantially. This type of approach also eliminates the need for a detailed model of the analog measurement circuit. In conjunction with the contact-free measurements and harmonic-rich waveforms, the approach allows for avoiding complicated and time-consuming sample preparation procedures. Both the measurement methodology as well as the electrode arrangement are presented and evaluated by comparing results obtained with different instruments.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"27 1","pages":"170-173"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82313860","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

Analysis of the pollution accumulation and pollution flashover performance of outdoor 500kV insulator string 室外500kV绝缘子串污积及污闪性能分析

2012 International Conference on High Voltage Engineering and Application Pub Date : 2012-11-26 DOI: 10.1109/ICHVE.2012.6357081

Xiaohua Liu, Zhijin Zhang, Kai Zheng, Wen-jie Li, Guoqiang Yang

{"title":"Analysis of the pollution accumulation and pollution flashover performance of outdoor 500kV insulator string","authors":"Xiaohua Liu, Zhijin Zhang, Kai Zheng, Wen-jie Li, Guoqiang Yang","doi":"10.1109/ICHVE.2012.6357081","DOIUrl":"https://doi.org/10.1109/ICHVE.2012.6357081","url":null,"abstract":"It is important to study the natural characteristic of pollution accumulation and flashover performance of insulator energized the operating voltage. This paper mainly focus on the insulator strings operating in a 500kV power network in Chongqing, tests and analyzes the pollution depositing rules and flashover performance of them. Test results indicate that: the value of equivalent salt deposit density (ESDD) on the top surface of insulator is lower than that on the bottom, as well as the value of non-soluble deposit density (NSDD);the accumulation rate of NSDD is heavier than that of ESDD; electric field distribution and precipitation exert a strong influence on the insulator obviously; at the same pollution level, the flashover voltage of natural contaminated insulator is 2 times as high as that of artificial polluted insulator, which mainly caused by the difference of pollution materials and non-uniform pollution distribution on the insulator surface. The results of this paper may be the reference for external insulation coordination and design in the pollution area.","PeriodicalId":6375,"journal":{"name":"2012 International Conference on High Voltage Engineering and Application","volume":"103 1","pages":"250-253"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77846316","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: 5

SA-SVM incremental algorithm for GIS PD pattern recognition GIS PD模式识别的SA-SVM增量算法

2012 International Conference on High Voltage Engineering and Application Pub Date : 2012-11-26 DOI: 10.1109/ICHVE.2012.6357131

Dibo Wang, Ju Tang, R. Zhuo, Jun-yi Lin, Jian-rong Wu, Xiao-xing Zhang

引用次数: 4

Development of a new power supply system of distributed sensors of transmission lines 新型输电线路分布式传感器供电系统的研制

2012 International Conference on High Voltage Engineering and Application Pub Date : 2012-11-26 DOI: 10.1109/ICHVE.2012.6357147

Bo Niu, Sen Wang, L. Pu, Zhizhong Li, Peng Zhang

引用次数: 0

Influence of water content on the aging performance of natural ester-paper insulation 含水量对天然酯纸绝缘材料老化性能的影响

2012 International Conference on High Voltage Engineering and Application Pub Date : 2012-11-26 DOI: 10.1109/ICHVE.2012.6357106

Junru Xiang, Jian Li, Zhaotao Zhang

引用次数: 10