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Lightning impulse corona characteristic of 1000 kv UHV transmission lines 1000kv特高压输电线路雷击电晕特性
2013 International Symposium on Lightning Protection (XII SIPDA) Pub Date : 2013-10-01 DOI: 10.1109/SIPDA.2013.6729200
Jinliang He, Pengcheng Yang, Shui-ming Chen, R. Zeng
{"title":"Lightning impulse corona characteristic of 1000 kv UHV transmission lines","authors":"Jinliang He, Pengcheng Yang, Shui-ming Chen, R. Zeng","doi":"10.1109/SIPDA.2013.6729200","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729200","url":null,"abstract":"The lightning overvoltage is one of key issues to design the insulations of transmission line and power apparatus. Usually, the influence of the impulse corona on lightning overvoltage is ignored. Fully understanding the corona characteristics of 1000 kV UHV transmission line is helpful to understand the actual wave process and realize a suitable insulation design of 1000 kV UHV system. Experiments on the lightning impulse corona characteristic of bundle conductors for 1000 kV transmission lines are carried out in China UHV AC Test Base and the impulse corona Q-V curves of different bundle conductors are obtained. The results show that impulse corona causes the capacitance of the conductor increasing. Analysis on the Q-V curves shows that the positive impulse corona occurs a little time later than the lightning impulse voltage exceeds the corona inception voltage and the delay time is tenth of microsecond.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133689615","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: 3
Does exist any relationship between the thunderstorm that occurred on march 30, 2012 in the Manizales city and the activity of the Nevado del ruíz volcano? 2012年3月30日发生在马尼萨莱斯市的雷暴与ruíz火山活动之间是否存在任何关系?
2013 International Symposium on Lightning Protection (XII SIPDA) Pub Date : 2013-10-01 DOI: 10.1109/SIPDA.2013.6729182
D. del Rio, C. Younes, J. Pulgarin
{"title":"Does exist any relationship between the thunderstorm that occurred on march 30, 2012 in the Manizales city and the activity of the Nevado del ruíz volcano?","authors":"D. del Rio, C. Younes, J. Pulgarin","doi":"10.1109/SIPDA.2013.6729182","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729182","url":null,"abstract":"This paper presents an analysis of the thunderstorm that occurred in the Manizales city in Colombia, on March 30, 2012 and makes an evaluation of the possible relationship between the lightning activity of that thunderstorm and the high volcanological activity registered in the Nevado del Ruíz volcano at the same city. This paper uses data obtained from the Lightning Location Network (LINET), World Wide Lightning Location Network (WWLLN) and the Volcanological and Seismological Observatory of Manizales (OVSM).","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133078283","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
Waveform analysis of cloud-to-ground flashes as detected by fast e-field antennas and lightning location systems: On the way to precisely estimate the stroke peak current 快速e场天线和闪电定位系统检测到的云对地闪光的波形分析:在精确估计冲击峰值电流的方法上
2013 International Symposium on Lightning Protection (XII SIPDA) Pub Date : 2013-10-01 DOI: 10.1109/SIPDA.2013.6729196
K. Naccarato, M. Saba, C. Schumann, O. Pinto, C. Medeiros, S. Heckman
{"title":"Waveform analysis of cloud-to-ground flashes as detected by fast e-field antennas and lightning location systems: On the way to precisely estimate the stroke peak current","authors":"K. Naccarato, M. Saba, C. Schumann, O. Pinto, C. Medeiros, S. Heckman","doi":"10.1109/SIPDA.2013.6729196","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729196","url":null,"abstract":"BrasilDAT network is an EarthNetworks Total Lightning System (ENTLS) that detects both intra-cloud and cloud-to-ground discharges. Multiple time-of-arrival (TOA) sensors send to central processor the whole waveform of every event detected. The EarthNetworks Lightning Sensor (ENLS) operates in a wide range (from 1Hz to 12MHz) and was designed to reduce system noise and to broaden the frequency range. At present, BrasilDAT is composed of 56 sensors covering 10 States of Brazil: RS, SC, PR, SP, RJ, ES, MG, MS, GO, and BA. We expect to conclude the full network deployment by the end of 2013 reaching up to 75 sensors covering almost all Brazilian regions (except the Amazon basin). This work intends to compare the fast e-field (E-fast) waveforms recorded during CHUVA project campaign for CG strokes that struck at a known location with the waveform recorded by several sensors at different distances from the flash. We know that waveform shapes recorded by different sensors at different distances from the flash have not just different amplitudes, but also different shapes. We know that even waveform shapes recorded by different sensors at the same distance from a flash have different shapes. To better understand these differences, we will predict electric fields at one location from measurements at many other locations and compare our predictions to measurements. We expect this to improve our propagation model and our site calibrations, and we expect it to provide a measurement of one part of the BrasilDAT peak current error.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134399660","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
An approach to reduce copper theft in transmission line grounding systems 一种减少输电线路接地系统盗铜的方法
2013 International Symposium on Lightning Protection (XII SIPDA) Pub Date : 2013-10-01 DOI: 10.1109/SIPDA.2013.6729183
D. A. Galvan, Ernesto Diaz Lozano
{"title":"An approach to reduce copper theft in transmission line grounding systems","authors":"D. A. Galvan, Ernesto Diaz Lozano","doi":"10.1109/SIPDA.2013.6729183","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729183","url":null,"abstract":"Electrical grounding systems are heavily dependent upon copper. Due to its scrap metal value copper is an attractive target for thieves and vandals. Copper theft presents one of the biggest threats to electrical safety systems and results in escalating costs, operational downtime and threats to life and assets. This is the case for transmission lines, because their isolated location and the unattended conditions. This paper attempts to reduce copper theft in transmission line grounding systems, according to already applied measures in power utility as an alternative measure still under assessment.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134268431","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: 3
Metal-oxide surge arrester's leakage current analysis and thermography 金属氧化物避雷器漏电流分析及热成像
2013 International Symposium on Lightning Protection (XII SIPDA) Pub Date : 2013-10-01 DOI: 10.1109/SIPDA.2013.6729238
W. Ursine, J. L. Silvino, L. G. Fonseca, Roberto M. de Andrade
{"title":"Metal-oxide surge arrester's leakage current analysis and thermography","authors":"W. Ursine, J. L. Silvino, L. G. Fonseca, Roberto M. de Andrade","doi":"10.1109/SIPDA.2013.6729238","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729238","url":null,"abstract":"Metal-Oxide arresters are used to protect substation's equipment against surges. Because their constructive properties, a small current, called leakage current, flows through them in normal operation condition. The resistive part of this current is a good indicator of the arrester's degradation state and is also responsible for its heating. This paper discusses the use of thermography and some methods that measure the leakage current for autonomous monitoring of metal-oxide surge arresters. Environment factors that contribute for its surface temperature and, therefore, affect thermography results are evaluated and discussed. In addition, a simple and direct current measurement method is used to obtain the resistive current and show its relation with thermography.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127209479","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: 6
The influence of seasonal soil moisture on the design of grounding systems 季节性土壤湿度对接地系统设计的影响
2013 International Symposium on Lightning Protection (XII SIPDA) Pub Date : 2013-10-01 DOI: 10.1109/SIPDA.2013.6729191
V. L. Coelho, A. Piantini, R. Altafim, H. Almaguer, R. A. Coelho, M. R. de Lima, W. Boaventura, J. Paulino, Plinio Luiz Nosaki
{"title":"The influence of seasonal soil moisture on the design of grounding systems","authors":"V. L. Coelho, A. Piantini, R. Altafim, H. Almaguer, R. A. Coelho, M. R. de Lima, W. Boaventura, J. Paulino, Plinio Luiz Nosaki","doi":"10.1109/SIPDA.2013.6729191","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729191","url":null,"abstract":"This paper discusses the influence of the moisture content on the seasonal behavior of soil resistivity and on the ground resistance of protection systems. Laboratory tests show that this influence is very large on the resistivity of several types of soil, although field researches indicate a wide variation in the resistivity and moisture content only in the topmost layers of the soil. However, this variation may significantly change the ground resistance values of systems with small dimensions, thus compromising the performance of protection systems of electrical installations. The strong correlation between the soil moisture, and consequently the soil resistivity, and monthly rainfall values allows extrapolating resistivity measurements for the most critical conditions and thus improving the design of grounding systems.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125845385","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: 6
Comparison between South African lightning detection network interpretation of single-channel and branched upward lightning flashes to a tall structure 南非雷电探测网对单通道和分支向上闪电对高层建筑的解释比较
2013 International Symposium on Lightning Protection (XII SIPDA) Pub Date : 2013-10-01 DOI: 10.1109/SIPDA.2013.6729232
H. Hunt, K. Nixon, I. Jandrell
{"title":"Comparison between South African lightning detection network interpretation of single-channel and branched upward lightning flashes to a tall structure","authors":"H. Hunt, K. Nixon, I. Jandrell","doi":"10.1109/SIPDA.2013.6729232","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729232","url":null,"abstract":"Lightning flashes photographed attaching to the Brixton tower in Johannesburg, South Africa over the period of 2010-2011 are put into two different categories: branched upward flashes and single-channel flashes. Using time-correlation methods, South African Lightning Detection (SALDN) records are matched to the photographed flashes. The SALDN interpretation of the two categories is then evaluated. It is found that the SALDN detected 25% of the photographed branched upward flashes and 44% of the photographed single-channel flashes. Strokes from both categories have location errors with 2 km. Only the branched upward flashes have detected strokes with location errors greater than 2 km. This is attributed to the smaller peak currents measured by the SALDN for branched upward strokes meaning fewer sensors are able to detect strokes from these events resulting in larger location errors.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126714438","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: 3
Analysis of the cumulative probability distribution of the stroke angle in lightning incidence to three-phase overhead transmission lines 三相架空输电线路雷电攻角累积概率分布分析
2013 International Symposium on Lightning Protection (XII SIPDA) Pub Date : 2013-10-01 DOI: 10.1109/SIPDA.2013.6729236
A. Lobato, M. Schroeder, Douglas E. Cruz, Maicon R. Reis, Rodolfo A. R. Moura, W. S. Sales, L. C. Nascimento, S. C. Assis
{"title":"Analysis of the cumulative probability distribution of the stroke angle in lightning incidence to three-phase overhead transmission lines","authors":"A. Lobato, M. Schroeder, Douglas E. Cruz, Maicon R. Reis, Rodolfo A. R. Moura, W. S. Sales, L. C. Nascimento, S. C. Assis","doi":"10.1109/SIPDA.2013.6729236","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729236","url":null,"abstract":"Lightning leaders follow a random behavior when approaching ground surface, so the usual assumption of a vertical stroke is not realistic. This paper is aimed at analysing the sensitivity of the shielding failure flashover rate (SFFOR) of three-phase overhead transmission lines to a probability distribution of the stroke angle, i.e. both vertical and non-vertical strokes. A modified Electrogeometric Model (mod-EGM), derived from a probabilistic computation of the exposure area of phase conductors is described. A computational code is developed in MATLAB, along with IEEE Flash algorithm implementation. Sensitivity analyses are carried out for a waist-type transmission tower. Results show that considering particularly vertical leaders may lead to underestimated values for flashover rates.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115490656","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
Measurement of the corona space charge in a wind tunnel: Influence of the surface charge on the dielectric walls 风洞中电晕空间电荷的测量:表面电荷对介质壁的影响
2013 International Symposium on Lightning Protection (XII SIPDA) Pub Date : 2013-10-01 DOI: 10.1109/SIPDA.2013.6729187
Sebastian Chaves, Gustavo Ocampo, Jorge Diaz, F. Roman
{"title":"Measurement of the corona space charge in a wind tunnel: Influence of the surface charge on the dielectric walls","authors":"Sebastian Chaves, Gustavo Ocampo, Jorge Diaz, F. Roman","doi":"10.1109/SIPDA.2013.6729187","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729187","url":null,"abstract":"In a wind tunnel is simulated the effect of the corona space charge on the corona current generated in a needle under thunderstorm-like electric field conditions. The natural cloud-to-ground electric field was simulated under wind conditions. The wind tunnel was built in acrylic. Preliminary measurements have shown that the acrylic walls could affect the corona current measurements. To test the possible influence of surface charge deposits on the chamber walls, different materials were tested: acrylic, wood and glass. Results show that corona current measurements are hardly influence by surface charge deposits on the wind tunnel acrylic walls, in a polarity dependent phenomenon.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114636347","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
Mechanical and environmental considerations in transmission line surge arrester applications 输电线路避雷器应用中的机械和环境考虑
2013 International Symposium on Lightning Protection (XII SIPDA) Pub Date : 2013-10-01 DOI: 10.1109/SIPDA.2013.6729248
W. Chisholm
{"title":"Mechanical and environmental considerations in transmission line surge arrester applications","authors":"W. Chisholm","doi":"10.1109/SIPDA.2013.6729248","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729248","url":null,"abstract":"Demonstrated long-term electrical reliability of overhead transmission line surge arresters (TLSA) must now be matched by improved mechanical reliability of the installations. The choice of configuration, including externally gapped (EGLA) and non-gapped (NGLA) designs, as well as the mounting arrangements, affects the applied stresses. NGLA suspended from conductors have pendulum frequencies and mass that can affect vibration control measures. Environmental issues such as moisture ingress and external flashover also affect selection of leakage, dry arc and external gap distances. Tests adapted from insulator, mechanical component and substation arrester standards describe some reasonable utility expectations for TLSA mechanical and environmental performance.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115075779","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
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