C. Miry, E. Amador, P. Duquerroy, Moret sur Loing, France, E. Bachelier, D. Prost, F. Issac
{"title":"Evaluation of lightning induced magnetic fields inside reinforced concrete buildings","authors":"C. Miry, E. Amador, P. Duquerroy, Moret sur Loing, France, E. Bachelier, D. Prost, F. Issac","doi":"10.1109/SIPDA.2013.6729207","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729207","url":null,"abstract":"In this paper, the shielding effectiveness of a reinforced concrete building against lightning induced effects is analyzed. Measurements of magnetic fields induced inside such a structure stressed by a lightning type of aggression are used to setup numerical models of the building with three distinct methods: the method of moments (MoM) with the CDEGS software, the Transmission Line Method (TLM) with CST's MWS software and LR equivalent circuit simulation technique with ONERA's LIRIC computer code. Once the limitations of the numerical models are identified, they are used to study the effect of a standard lightning strike in terms of magnetic fields inside the structure.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"274 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133514923","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}
{"title":"Calculation of electromagnetic fields in free space when lightning strikes a tall object","authors":"Helin Zhou, R. Thottappillil, G. Diendorfer","doi":"10.1109/SIPDA.2013.6729189","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729189","url":null,"abstract":"We calculate vertical electric field and azimuthal magnetic field at different elevation angles and distances associated with lightning strikes a tall object. Simple and exact expressions for electromagnetic fields are derived when the current reflection coefficient at tall object top is zero and return stroke propagation speed in the lightning channel is equal to the speed of light. Further, we investigate the effects of current reflection coefficient at tall object top being not zero and the propagation speed is less than the speed of light (e.g., one half) on electromagnetic fields. Interestingly, we find that the vertical electric field has its largest peak value either at the smallest elevation angle or at the largest elevation angle. While for the azimuthal magnetic field, we note that its largest peak value is always at the smallest elevation angle or relatively small elevation angles.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"24 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":"116628670","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}
{"title":"Impact of lightning impulse voltage on polycrystalline silicon photovoltaic modules","authors":"Taosha Jiang, S. Grzybowski","doi":"10.1109/SIPDA.2013.6729225","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729225","url":null,"abstract":"Lightning is one of the factors that cause Photovoltaic (PV) system to fail. Both direct lightning strike and lightning induced voltages pose electrical stress to the PV system. The PV modules inside PV systems, like any other electric equipment, will be degraded under this stress. In this paper, experiments of applying standard lightning impulse voltages 1.2/50 μs of positive polarity (peak voltage 15 V, 30 V, and 90 V) on a type of polycrystalline silicon photovoltaic module were performed. Comparisons of their dark I-V characteristics curves and I-V characteristics are presented. Studies show that the repeated impulse stresses causes a drop in the modules power output when the stress voltage is 30 V and 90 V.","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":"128998730","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}
A. Smorgonskiy, F. Rachidi, M. Rubinstein, G. Diendorfer
{"title":"On the relation between lightning flash density and terrain elevation","authors":"A. Smorgonskiy, F. Rachidi, M. Rubinstein, G. Diendorfer","doi":"10.1109/SIPDA.2013.6729216","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729216","url":null,"abstract":"The distribution of lightning flash density over large areas depends on many factors. In this paper, we analyze one of them, namely the terrain elevation. Some previous studies suggest that the lightning flash density decreases above a certain altitude. We show that this conclusion could be affected by the used method of analysis and we suggest two improved methods. The lightning flash density distribution over Switzerland and Austria was used as an example to test the proposed methods. The results of the application of both methods suggest that the lightning flash density grows over the whole altitude range.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"19 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":"132261825","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}
C. Sigogne, P. Pignolet, T. Reess, A. D. de Ferron, G. Berger, G. Lafon, G. Serrie
{"title":"New results at the Pic du Midi lightning station","authors":"C. Sigogne, P. Pignolet, T. Reess, A. D. de Ferron, G. Berger, G. Lafon, G. Serrie","doi":"10.1109/SIPDA.2013.6729230","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729230","url":null,"abstract":"The lightning station has been installed at the top of the Pic du Midi to observe and record the lightning attachment to an instrumented rod. Direct measurements of the lightning current and atmospheric electric field are recorded. Various video cameras are used to analyse the flash impacts to the rod and also to various parts of its surroundings. Our goal is to instrument mainly one Observatory building protected by means of a rod to record lightning impacts and, if any, notice some possible LPS by-passes, a direct evaluation of the protected zone. New results obtained during summer 2013 lightning season will be presented.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"13 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":"129097072","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}
V. Rakov, A. Borghetti, C. Bouquegneau, W. Chisholm, V. Cooray, K. Cummins, G. Diendorfer, F. Heidler, A. Hussein, M. Ishii, C. Nucci, A. Piantini, O. Pinto, X. Qie, F. Rachidi, M. Saba, T. Shindo, W. Schulz, R. Thottappillil, S. Visacro, W. Zischank
{"title":"CIGRE technical brochure on lightning parameters for engineering applications","authors":"V. Rakov, A. Borghetti, C. Bouquegneau, W. Chisholm, V. Cooray, K. Cummins, G. Diendorfer, F. Heidler, A. Hussein, M. Ishii, C. Nucci, A. Piantini, O. Pinto, X. Qie, F. Rachidi, M. Saba, T. Shindo, W. Schulz, R. Thottappillil, S. Visacro, W. Zischank","doi":"10.1109/SIPDA.2013.6729246","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729246","url":null,"abstract":"CIGRE TB 549 (2013) is an update on previous CIGRE documents on the subject, published in Electra more than three decades ago. Lightning parameters needed in different engineering applications are reviewed. New experimental data, as well as the old data, are evaluated. Additional lightning parameters, previously not considered by CIGRE, are included. Possible geographical and seasonal variations in lightning parameters are examined. Specific applications are considered and recommendations are made.","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":"127940191","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}
J. Morales, E. Orduña, C. Rehtanz, R. Cabral, A. Bretas
{"title":"Comparison between PCA and WT filtering methods for lightning stroke classification on transmission lines: Lightning stroke classification for protection relay","authors":"J. Morales, E. Orduña, C. Rehtanz, R. Cabral, A. Bretas","doi":"10.1109/SIPDA.2013.6729231","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729231","url":null,"abstract":"In this paper, a comparative study of the advantages and disadvantages of Principal Component Analysis (PCA) and Wavelet Transform (WT) based methods combined with a Artificial Neural Network (ANN) classifier for the lightning stroke classification is presented. Results show that both techniques present an acceptable performance. However, PCA technique presents some advantages with respect to the Wavelet Transform technique.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"19 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":"125553955","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}
H. Almaguer, R. A. Coelho, Plinio Luiz Nosaki, V. L. Coelho, A. Piantini
{"title":"A feasibility study on the use of concrete pole bases as a grounding topology for distribution systems","authors":"H. Almaguer, R. A. Coelho, Plinio Luiz Nosaki, V. L. Coelho, A. Piantini","doi":"10.1109/SIPDA.2013.6729197","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729197","url":null,"abstract":"This paper presents an analysis of the behavior of concrete pole bases under lightning impulse currents and their application as a grounding topology for overhead power distribution lines. For this purpose, the Transmission-Line Modeling Method (TLM) has been used to simulate the transient grounding impedance curve. An analytical expression has been developed to compute the ground resistance and a good agreement has been obtained between the models. Comparisons are presented with results corresponding to a single vertical rod. The use of concrete pole bases as grounding structures is shown to be a viable and economical alternative to be applied in some power distribution grounding systems in substitution to single rods.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"16 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":"121546657","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}
G. Zepka, A. C. V. Saraiva, O. Pinto, V. G. L. Gardiman
{"title":"Lightning forecasting using WRF model over EDP distribution companies areas","authors":"G. Zepka, A. C. V. Saraiva, O. Pinto, V. G. L. Gardiman","doi":"10.1109/SIPDA.2013.6729239","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729239","url":null,"abstract":"The lightning forecasting method called Potential Lightning Region (PLR) is a tool that provides the probability of the occurrence of lightning over a region of interest. The definition of the PLR was based on a combination of meteorological variables obtained from high-resolution Weather Research and Forecasting (WRF) model simulations during the summer season in southeastern Brazil. The model parameters used in the PLR calculation were: most unstable Convective Available Potential Energy (mCAPE), K-Index (KI), Total Totals Index (ITT), 700-500 hPa lapse rate of equivalent potential temperature, vertical velocity averaged between 850 hPa and 700 hPa, and ice-mixing ratio integrated from 700 hPa to 500 hPa. Since 2010, a partnership between the Group EDP-Brasil and the Atmospheric Electricity Group (ELAT) of National Institute for Space Research (INPE) is supporting the ClimaGrid Project that aims for developing a new computational system that integrates a wide range of meteorological and environmental variables to the electrical system information, in order to manage the growing impact of climate changes on power systems engineering, and to minimize its effects as well. The PLR has been operational for the first time in the ClimaGrid Project, and, in this study, we present some preliminary results of the PLR campaign during the 2012/2013 summer over EDP distribution companies areas. The thunderstorm case studies discussed here show that PLR works satisfactorily, being a useful tool to help EDP in the maintenance of the power systems.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"200 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":"116121739","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}
{"title":"Statistics of the Colombian National Army lightning accidents","authors":"Carlos Cruz, E. Rentería, F. Roman","doi":"10.1109/SIPDA.2013.6729181","DOIUrl":"https://doi.org/10.1109/SIPDA.2013.6729181","url":null,"abstract":"Statistics of Colombian National Army lightning accidents for 8 years between 2003 and 2012 are presented. The Direction of Integrity Preservation and Security of the Colombian Army DIPSE (Spanish acronym of Dirección de Preservación de la Integridad y Seguridad del Ejercito) reports are the base for the present paper. A total of 282 casualties were reported in 149 events with 72 deaths and 210 injuries. The real figures may be much higher due to the fact that some cases are not reported. Lightning accidents tended to occur mainly in the two rainy seasons April to June and September to November. The Colombian Department of Antioquia showed the largest number of reported events and casualties. It also happens to be the region with the largest ground flash density of Colombia.","PeriodicalId":216871,"journal":{"name":"2013 International Symposium on Lightning Protection (XII SIPDA)","volume":"32 2 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":"116624618","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}