2010 International Conference on High Voltage Engineering and Application最新文献_第9页

Field characteristics and dielectric tests on an IGBT module plate IGBT模块板的场特性和介电试验

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640854

Sandra Jany, A. Nysveen, S. Ingebrigtsen

{"title":"Field characteristics and dielectric tests on an IGBT module plate","authors":"Sandra Jany, A. Nysveen, S. Ingebrigtsen","doi":"10.1109/ICHVE.2010.5640854","DOIUrl":"https://doi.org/10.1109/ICHVE.2010.5640854","url":null,"abstract":"This paper presents results from dielectric tests along the surface of the base plate of an IGBT module as well as on printed circuit boards (PCBs). The PCBs have simplified geometries representative for base plates used in IGBT modules. The module will be applied in subsea converters, submerged in a liquid dielectric and exposed to subsea hydrostatic pressure. One base plate was cut to examine geometric details of the cross section with a microscope. These results were used for accurate modeling of the geometry used in FEM analysis of the electric field distribution. Pd-measurements with ac voltage were performed in both air and MIDEL 7131 oil on the base plate and the PCB test objects. The discharges were detected optically by using both a photomultiplier and a light-sensitive and high-speed CMOS video camera to respectively measure the pd inception voltage and the location of the discharges. It was found that at some critical voltage the pd activity increases rapidly before leading to an electric breakdown. The inception voltage of the measurements in oil showed up to be independent from the shape of the electrode geometry.","PeriodicalId":287425,"journal":{"name":"2010 International Conference on High Voltage Engineering and Application","volume":"6 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114085908","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

Research on the dielectric properties and breakdown voltage of transformer oil-paper insulation after accelerating thermal ageing 加速热老化后变压器油纸绝缘介电性能及击穿电压的研究

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640744

Chao Tang, R. Liao, Lijun Yang, Fei-long Huang

引用次数: 15

Electrical treeing in extruded polypropylene high voltage cable insulation 挤压聚丙烯高压电缆绝缘中的电气树

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640748

J. Holto, E. Ildstad

引用次数: 5

DC ice-melting model for elliptic glaze iced conductor 椭圆釉覆冰导体直流融冰模型

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640789

Xingliang Jiang, Songhai Fan

引用次数: 3

Simulation of transient earth voltages aroused by partial discharge in switchgears 开关柜局部放电引起的瞬态接地电压仿真

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640801

Yinwei Li, Youyuan Wang, Guojun Lu, Jin Wang, Jun Xiong

{"title":"Simulation of transient earth voltages aroused by partial discharge in switchgears","authors":"Yinwei Li, Youyuan Wang, Guojun Lu, Jin Wang, Jun Xiong","doi":"10.1109/ICHVE.2010.5640801","DOIUrl":"https://doi.org/10.1109/ICHVE.2010.5640801","url":null,"abstract":"Switchgears are the key equipments in the distribution network. Operating switchgear with active Partial Discharge (PD) increases the risk of failure occurring at the time of switching leading to increased risk to the operator. PD in switchgears can be considered to take two forms, surface discharge and internal discharge, if allowed to continue, eventually causes the insulation to break down catastrophically. The electromagnetic pulses produced by PD are in large part conducted away by the surrounding metalwork but a small proportion impinges onto the inner surface of the casing. These charges escape through joints in the metalwork, or a gasket on a gas insulated switch, and pass, as local raised voltages, across the surface of the switch to earth. These pulses of charge were named by Transient Earth Voltages (TEV), and the level of these TEV signals are proportional to the condition of the insulation for switchgear of the same type and model, measured at the same point. So TEV is a very powerful comparative technique for noninvasively checking the condition of switches. In this paper, the Finite-Difference Time-Domain (FDTD) method was employed to simulate the propagation law of TEV in the switchgear. The simulation results show that, the TEV amplitude is proportional to the PD pulse amplitude, increases with PD pulse width decrease and decrease with the distance between detection point and PD source.","PeriodicalId":287425,"journal":{"name":"2010 International Conference on High Voltage Engineering and Application","volume":"40 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":"122443455","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: 35

Investigation of the relationship between PD measured with RF techniques and apparent charge quantity of metal protrusion in air 射频技术测量PD与空气中金属突出物视电荷量关系的研究

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640807

Xiaoxing Zhang, Ju Tang, Yanbin Xie

{"title":"Investigation of the relationship between PD measured with RF techniques and apparent charge quantity of metal protrusion in air","authors":"Xiaoxing Zhang, Ju Tang, Yanbin Xie","doi":"10.1109/ICHVE.2010.5640807","DOIUrl":"https://doi.org/10.1109/ICHVE.2010.5640807","url":null,"abstract":"Radical frequency (RF) measurement has become hot point in field of partial discharge detection. However, a big problem that hampers the application of this method is difficult to establish a relationship between data from RF measurement and apparent discharge quantity, that is, use RF signal to estimate the apparent discharge. In this paper, on the basis of the experiment model of metal protrusion, the relationship between RF measurement and pulse current method (IEC60270) was investigated. The relationship curves of energy, double integration, peak voltage, peak-peak voltage, area of the RF signal relative to apparent discharge quantity or the square of apparent discharge quantity were plotted and the optimal regression curve was found out. At the same time, the impacts of voltage and the distance between protrusion and plate were investigated as well. The results indicate that the optimal regression curve is energy of RF signal relative to square of apparent discharge quantity. The variation of voltage has no impact on the regression curve, that is, data from different voltage regress to one line. However, while the distance between protrusion and plate is changed, the slope of regression curve changes according to it and the same energy is corresponding to bigger discharge quantity. The results are valuable to be applied in the field of estimation of the discharge quantity of RF partial discharge signal.","PeriodicalId":287425,"journal":{"name":"2010 International Conference on High Voltage Engineering and Application","volume":"19 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":"129404239","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

Research on the optimization of UHV AC composite insulators' shed 特高压交流复合绝缘子棚架优化研究

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640757

Chuyan Zhang, Li-ming Wang, Zhi-dong Jia, Z. Guan

引用次数: 2

A multi-parameter evaluation method of large generator fault probability 大型发电机故障概率的多参数评估方法

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640791

Yingchun He, Youyuan Wang, Weigen Chen, Lin Du, Mingying Chen, Yali Liu

{"title":"A multi-parameter evaluation method of large generator fault probability","authors":"Yingchun He, Youyuan Wang, Weigen Chen, Lin Du, Mingying Chen, Yali Liu","doi":"10.1109/ICHVE.2010.5640791","DOIUrl":"https://doi.org/10.1109/ICHVE.2010.5640791","url":null,"abstract":"It is conducive to ensuring the safety and reliability of the power system that the timely and accurate evaluation of the reliability of the large generator. A composite evaluation method of the fault probability for the large generator based on the multi-characteristic parameters is proposed in this paper, and it can be employed to solve the difficult problem how the occurrence probability of fault modes of the large generator can be evaluated in the process of the reliability evaluation. Firstly, the set of the fault characteristic parameters for the large generator is established on the basis of the induction and arrangement of a large number of operation experiences and the preventive test code for the large generator. Secondly, according to the features of the fault characteristic parameters, two estimation methods of the fault mode occurrence probability are proposed, which are based on the fuzzy membership function and the relative deterioration degree respectively. Finally, on the basis of the improved analytic hierarchy process (IAHP) method, the composite estimation method of the fault probability for the large generator is presented, which can reasonably and adequately use the information of the various characteristic parameters. An assessment case is provided to illustrate the specific process of this evaluation method and to verify its effectiveness.","PeriodicalId":287425,"journal":{"name":"2010 International Conference on High Voltage Engineering and Application","volume":"84 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":"129441734","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

SF6 gas monitoring and leakage detection in gas insulated switchgear 气体绝缘开关柜SF6气体监测及泄漏检测

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640794

R. Barnett, J. H. Nelson

引用次数: 6

Comparison of AC pollution flashover performance of insulators in chamber with high altitude spots 高海拔点室绝缘子交流污闪性能比较

2010 International Conference on High Voltage Engineering and Application Pub Date : 2010-11-18 DOI: 10.1109/ICHVE.2010.5640747

Zhijin Zhang, Haizhou Huang, Xingliang Jiang, Jianlin Hu, Caixin Sun

引用次数: 1