Pub Date : 2015-10-01DOI: 10.1109/SIPDA.2015.7339301
F. Leferink, Alex Blaj, Edwin Hogeman, Robert M. Storck
When a radar system onboard a ship is struck by lightning the current has to be conducted via defined paths to prevent damage. A key element to protect is the bearing system between the rotating and stationary part. The conventional way of protecting bearing is to provide a bypass current path via additional measures such as a slip ring. The main cause of damage to the bearing system is the arcing due to high voltage difference between rollers and raceway. It is commonly assumed that, if the radar is rotating, the lubrication between the rolling elements and the raceway is a non-electrical conducting hydrodynamic lubrication layer, and high voltages can be developed. But if the bearing is sufficiently preloaded it is still providing a conductive path via boundary lubrication. No arcing occurs, and no damage. The concept of pre-loading the bearing system has been evaluated using many experiments on stationary and rotating bearings, and after performing endurance testing.
{"title":"Using preloading to protect bearings against lightning damage","authors":"F. Leferink, Alex Blaj, Edwin Hogeman, Robert M. Storck","doi":"10.1109/SIPDA.2015.7339301","DOIUrl":"https://doi.org/10.1109/SIPDA.2015.7339301","url":null,"abstract":"When a radar system onboard a ship is struck by lightning the current has to be conducted via defined paths to prevent damage. A key element to protect is the bearing system between the rotating and stationary part. The conventional way of protecting bearing is to provide a bypass current path via additional measures such as a slip ring. The main cause of damage to the bearing system is the arcing due to high voltage difference between rollers and raceway. It is commonly assumed that, if the radar is rotating, the lubrication between the rolling elements and the raceway is a non-electrical conducting hydrodynamic lubrication layer, and high voltages can be developed. But if the bearing is sufficiently preloaded it is still providing a conductive path via boundary lubrication. No arcing occurs, and no damage. The concept of pre-loading the bearing system has been evaluated using many experiments on stationary and rotating bearings, and after performing endurance testing.","PeriodicalId":296478,"journal":{"name":"2015 International Symposium on Lightning Protection (XIII SIPDA)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122093814","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}
Pub Date : 2015-09-28DOI: 10.1109/SIPDA.2015.7339300
M. G. Nicora, E. Quel, J. L. Bali, Alejandro A. Acquesta, Luciano Vidal, Rodrigo E. Burgesser, E. Ávila, P. Salio, Maria Luisa Altinger de Schwarzkopf
This work presents a lightning jump algorithm (LJA): “GeoRayos” to detect severe weather; it is based on the algorithm presented by Schultz et al. (2011) [1]. The lightning data used in this study came from the World Wide Lightning Location Network which is a real-time, world-wide and ground network. In this study, the lightning activity occurred during spring and summer of 2013 on the region [20-50]S of latitude and [50“70]W of longitude was examined. The LJA was validated by using information of severe weather occurrence in the report “Estudio de los Tornados en la Rep. Argentina” this unpublished report (M. L. Altinger de Schwarzkopf, personal communication) provides severe phenomena occurred since 1930 to the present, also we used information from the National Weather Service in Argentina, local argentinean media, and radar data. The spatial and time distributions of lightning jumps were analyzed by using different spatial and temporal scales.
本文提出了一种闪电跳跃算法(LJA):“GeoRayos”来检测恶劣天气;它基于Schultz et al.(2011)[1]提出的算法。本研究中使用的闪电数据来自全球闪电定位网络，这是一个实时的、全球性的地面网络。本研究考察了2013年春夏在纬度[20-50]S和经度[50”70]W地区发生的闪电活动。LJA通过使用“Estudio de los Tornados en la rep Argentina”报告中的恶劣天气信息进行验证。这份未发表的报告(M. L. Altinger de Schwarzkopf，个人通讯)提供了自1930年至今发生的恶劣现象，我们还使用了阿根廷国家气象局、阿根廷当地媒体和雷达数据的信息。采用不同的时空尺度分析了闪电跃变的时空分布。
{"title":"GeoRayos a new aplication for severe weather warning","authors":"M. G. Nicora, E. Quel, J. L. Bali, Alejandro A. Acquesta, Luciano Vidal, Rodrigo E. Burgesser, E. Ávila, P. Salio, Maria Luisa Altinger de Schwarzkopf","doi":"10.1109/SIPDA.2015.7339300","DOIUrl":"https://doi.org/10.1109/SIPDA.2015.7339300","url":null,"abstract":"This work presents a lightning jump algorithm (LJA): “GeoRayos” to detect severe weather; it is based on the algorithm presented by Schultz et al. (2011) [1]. The lightning data used in this study came from the World Wide Lightning Location Network which is a real-time, world-wide and ground network. In this study, the lightning activity occurred during spring and summer of 2013 on the region [20-50]S of latitude and [50“70]W of longitude was examined. The LJA was validated by using information of severe weather occurrence in the report “Estudio de los Tornados en la Rep. Argentina” this unpublished report (M. L. Altinger de Schwarzkopf, personal communication) provides severe phenomena occurred since 1930 to the present, also we used information from the National Weather Service in Argentina, local argentinean media, and radar data. The spatial and time distributions of lightning jumps were analyzed by using different spatial and temporal scales.","PeriodicalId":296478,"journal":{"name":"2015 International Symposium on Lightning Protection (XIII SIPDA)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114169116","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}
Pub Date : 2015-09-01DOI: 10.1109/SIPDA.2015.7339299
S. Pedeboy
The location accuracy is one of the important parameters characterizing the performance of a lightning location system. It is also one of the most difficult to determine as the actual location of the discharge being located must be accurately known to achieve a reliable assessment of the real error. Among all the measurement techniques which can be used to collect such ground truth data, none can cover large area preventing the estimation of the location accuracy at a regional or national scale. Trying to get around this limitation, Météorage has developed a method based on lightning ground strike point data collected by the French national lightning locating system computing the separation distances of return strokes identified as using the same attachment point on the ground. As a result, statistics on the relative location accuracy over the last 10 years of operation at the national scale are produced. In order to determine whether this data could be a proxy for the absolute location accuracy they are compared against systematic errors estimated in the vicinity of high elevation towers well known to attract or trigger lightning. If the study shows some discrepancies between relative and absolute errors at the beginning of the period, mainly due to technological upgrades in the system, it turns out both parameters fit nicely since 2010. This tending to demonstrate the relative errors estimated based on the ground strike point can be used as a good proxy for the absolute location errors estimate.
{"title":"Analysis of the French lightning locating system location accuracy","authors":"S. Pedeboy","doi":"10.1109/SIPDA.2015.7339299","DOIUrl":"https://doi.org/10.1109/SIPDA.2015.7339299","url":null,"abstract":"The location accuracy is one of the important parameters characterizing the performance of a lightning location system. It is also one of the most difficult to determine as the actual location of the discharge being located must be accurately known to achieve a reliable assessment of the real error. Among all the measurement techniques which can be used to collect such ground truth data, none can cover large area preventing the estimation of the location accuracy at a regional or national scale. Trying to get around this limitation, Météorage has developed a method based on lightning ground strike point data collected by the French national lightning locating system computing the separation distances of return strokes identified as using the same attachment point on the ground. As a result, statistics on the relative location accuracy over the last 10 years of operation at the national scale are produced. In order to determine whether this data could be a proxy for the absolute location accuracy they are compared against systematic errors estimated in the vicinity of high elevation towers well known to attract or trigger lightning. If the study shows some discrepancies between relative and absolute errors at the beginning of the period, mainly due to technological upgrades in the system, it turns out both parameters fit nicely since 2010. This tending to demonstrate the relative errors estimated based on the ground strike point can be used as a good proxy for the absolute location errors estimate.","PeriodicalId":296478,"journal":{"name":"2015 International Symposium on Lightning Protection (XIII SIPDA)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122388289","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}
Pub Date : 2015-09-01DOI: 10.1109/SIPDA.2015.7339275
Tao Lu, Ming-li Chen, Hong Gao, Ran Cai
Current distribution within a new gradient observation tower has been calculated by finite-difference time-domain (FDTD) method. The current through Metallic stay cables which are designed to reinforce tower body has been take into account. It is found that a large portion of lightning current would be absorbed by stay cables. Ground level electrical field is also given by the calculation. In addition, the influence of tower on background field is addressed when thundercloud exists based on the solution of Laplace static equation.
{"title":"Current distribution within a new meteorological gradient observation tower under direct lightning strike in Shenzhen and spatial electrical field around the tower","authors":"Tao Lu, Ming-li Chen, Hong Gao, Ran Cai","doi":"10.1109/SIPDA.2015.7339275","DOIUrl":"https://doi.org/10.1109/SIPDA.2015.7339275","url":null,"abstract":"Current distribution within a new gradient observation tower has been calculated by finite-difference time-domain (FDTD) method. The current through Metallic stay cables which are designed to reinforce tower body has been take into account. It is found that a large portion of lightning current would be absorbed by stay cables. Ground level electrical field is also given by the calculation. In addition, the influence of tower on background field is addressed when thundercloud exists based on the solution of Laplace static equation.","PeriodicalId":296478,"journal":{"name":"2015 International Symposium on Lightning Protection (XIII SIPDA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115795540","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}
Pub Date : 2015-09-01DOI: 10.1109/SIPDA.2015.7339335
S. Kazazi, A. Hussein, P. Liatos
Using the CN Tower lightning data acquired on September 5, 2014, the performance characteristics of the North American Lightning Detection Network (NALDN) are evaluated. The evaluation includes polarity, stroke detection efficiency, location accuracy and peak current estimation. On that day, the tower was struck with 24 flashes, based on video records. However, only nine of these flashes were found to contain return strokes based on current records and luminosity analysis of video records. These nine flashes contained a total of 30 return strokes. The NALDN detected all these return strokes, resulting in a perfect return-stroke detection efficiency. All recorded return strokes were proven to be negative, complying with NALDN prediction. Relative to the tower, for the 30 detected strokes, the NALDN was found to have a median absolute location error of 124.7m and an average absolute location error of 136.77m, each is about one-third of that determined based on a 2005 network evaluation. It was also demonstrated that the NALDN stroke location error have a substantial bias towards the north of the tower and a marked bias towards the west. The NALDN is found to overestimate the current peak measured at the tower, which is due to the higher speed of propagation within the tall tower, approximately at the speed of light in free space, in comparison with the speed of propagation of return strokes. The presented work shows that the NALDN upgrades, beyond 2005, have substantially improved the NALDN performance characteristics, especially in terms of stroke-detection efficiency and location accuracy.
{"title":"Evaluation of the performance characteristics of the North American Lightning Detection Network based on recent CN Tower lightning data","authors":"S. Kazazi, A. Hussein, P. Liatos","doi":"10.1109/SIPDA.2015.7339335","DOIUrl":"https://doi.org/10.1109/SIPDA.2015.7339335","url":null,"abstract":"Using the CN Tower lightning data acquired on September 5, 2014, the performance characteristics of the North American Lightning Detection Network (NALDN) are evaluated. The evaluation includes polarity, stroke detection efficiency, location accuracy and peak current estimation. On that day, the tower was struck with 24 flashes, based on video records. However, only nine of these flashes were found to contain return strokes based on current records and luminosity analysis of video records. These nine flashes contained a total of 30 return strokes. The NALDN detected all these return strokes, resulting in a perfect return-stroke detection efficiency. All recorded return strokes were proven to be negative, complying with NALDN prediction. Relative to the tower, for the 30 detected strokes, the NALDN was found to have a median absolute location error of 124.7m and an average absolute location error of 136.77m, each is about one-third of that determined based on a 2005 network evaluation. It was also demonstrated that the NALDN stroke location error have a substantial bias towards the north of the tower and a marked bias towards the west. The NALDN is found to overestimate the current peak measured at the tower, which is due to the higher speed of propagation within the tall tower, approximately at the speed of light in free space, in comparison with the speed of propagation of return strokes. The presented work shows that the NALDN upgrades, beyond 2005, have substantially improved the NALDN performance characteristics, especially in terms of stroke-detection efficiency and location accuracy.","PeriodicalId":296478,"journal":{"name":"2015 International Symposium on Lightning Protection (XIII SIPDA)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133517393","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}
Pub Date : 2015-09-01DOI: 10.1109/SIPDA.2015.7339321
H. E. Sueta, L. E. Caires, G. Burani, Guilherme L. S. Mamprin, Guilherme Mierzwa, J. Milton, Gabriel Cagnin
This paper presents development of a spreadsheet for risk analysis and an app for smartphone in order to aid this analysis.
本文提出了风险分析电子表格和智能手机应用程序的发展，以帮助这一分析。
{"title":"Developing a worksheet for risk analysis according to ABNT NBR 5419-2","authors":"H. E. Sueta, L. E. Caires, G. Burani, Guilherme L. S. Mamprin, Guilherme Mierzwa, J. Milton, Gabriel Cagnin","doi":"10.1109/SIPDA.2015.7339321","DOIUrl":"https://doi.org/10.1109/SIPDA.2015.7339321","url":null,"abstract":"This paper presents development of a spreadsheet for risk analysis and an app for smartphone in order to aid this analysis.","PeriodicalId":296478,"journal":{"name":"2015 International Symposium on Lightning Protection (XIII SIPDA)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114537060","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}
Pub Date : 2015-09-01DOI: 10.1109/SIPDA.2015.7339329
J. Pantoja, F. Roman
In this paper the behavior of an earthing system when a 100 kA, 10/350 lightning current is applied to a grounded mast is investigated. The numerical calculations were performed using the transient solver of CST Microwave Studio, a finite technique based computer program. CST was used to calculate induced step and touch voltages in the mast under grounded with and without a protecting fence or enclosure around it. The performed simulations show that conventional electrostatic simulation methods based mainly on a soil resistive behavior could ignore some inductive effects which could induce fast changing voltages.
{"title":"Analysis of a lightning earthing system using electromagnetic simulations","authors":"J. Pantoja, F. Roman","doi":"10.1109/SIPDA.2015.7339329","DOIUrl":"https://doi.org/10.1109/SIPDA.2015.7339329","url":null,"abstract":"In this paper the behavior of an earthing system when a 100 kA, 10/350 lightning current is applied to a grounded mast is investigated. The numerical calculations were performed using the transient solver of CST Microwave Studio, a finite technique based computer program. CST was used to calculate induced step and touch voltages in the mast under grounded with and without a protecting fence or enclosure around it. The performed simulations show that conventional electrostatic simulation methods based mainly on a soil resistive behavior could ignore some inductive effects which could induce fast changing voltages.","PeriodicalId":296478,"journal":{"name":"2015 International Symposium on Lightning Protection (XIII SIPDA)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114967456","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}
Pub Date : 2015-09-01DOI: 10.1109/SIPDA.2015.7339314
R. Alípio, R. Dias, S. Visacro, F. H. Silveira
This work asses the shielding failure of transmission lines by applying the Electrogeometric Model, notably considering the influence of both first and subsequent strokes and also channel angles different from 0° (vertical channel). Considering different tower geometries, it is shown that the shielding failure rate of transmission lines is much more significant for subsequent strokes than for first stroke currents. Furthermore, it is shown that considering channel angles different from 0° leads to an increase of the number of strokes hitting phase conductors. Such increase can be very significant depending on the tower geometry, for instance, in case of EHV double circuit lines.
{"title":"Analysis of shielding failure in transmission lines considering both first and subsequent strokes","authors":"R. Alípio, R. Dias, S. Visacro, F. H. Silveira","doi":"10.1109/SIPDA.2015.7339314","DOIUrl":"https://doi.org/10.1109/SIPDA.2015.7339314","url":null,"abstract":"This work asses the shielding failure of transmission lines by applying the Electrogeometric Model, notably considering the influence of both first and subsequent strokes and also channel angles different from 0° (vertical channel). Considering different tower geometries, it is shown that the shielding failure rate of transmission lines is much more significant for subsequent strokes than for first stroke currents. Furthermore, it is shown that considering channel angles different from 0° leads to an increase of the number of strokes hitting phase conductors. Such increase can be very significant depending on the tower geometry, for instance, in case of EHV double circuit lines.","PeriodicalId":296478,"journal":{"name":"2015 International Symposium on Lightning Protection (XIII SIPDA)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124213097","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}
Pub Date : 2015-09-01DOI: 10.1109/SIPDA.2015.7339332
M. S. Vieira, J. M. Janiszewski
Among the various factors that influence the lightning electromagnetic fields, the presence of obstacles such as buildings has deserved some few studies. The paper presents the results related to the influence of a group of buildings on the vertical electric field, by a 3D FDTD code developed for a more complete study. Two rows of concrete buildings were considered, with different heights, areas and separation distances. The fields were calculated at various points on three distribution lines supposed to exist in front of the group of buildings, in its middle and behind it. Two different striking points were considered on the top of two chosen buildings. The simulations have shown a general field reduction due to the group of buildings, depending on their dimensions and heights, and on the position of the lightning striking point, but with not significant dependence on the separation distance between buildings. As expected, in some conditions polarity inversion of the vertical electric field can occur.
{"title":"The effect of a group of buildings on the lightning electromagnetic fields","authors":"M. S. Vieira, J. M. Janiszewski","doi":"10.1109/SIPDA.2015.7339332","DOIUrl":"https://doi.org/10.1109/SIPDA.2015.7339332","url":null,"abstract":"Among the various factors that influence the lightning electromagnetic fields, the presence of obstacles such as buildings has deserved some few studies. The paper presents the results related to the influence of a group of buildings on the vertical electric field, by a 3D FDTD code developed for a more complete study. Two rows of concrete buildings were considered, with different heights, areas and separation distances. The fields were calculated at various points on three distribution lines supposed to exist in front of the group of buildings, in its middle and behind it. Two different striking points were considered on the top of two chosen buildings. The simulations have shown a general field reduction due to the group of buildings, depending on their dimensions and heights, and on the position of the lightning striking point, but with not significant dependence on the separation distance between buildings. As expected, in some conditions polarity inversion of the vertical electric field can occur.","PeriodicalId":296478,"journal":{"name":"2015 International Symposium on Lightning Protection (XIII SIPDA)","volume":"287 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122205942","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}
Pub Date : 2015-09-01DOI: 10.1109/SIPDA.2015.7339298
Bo Zhang, Jinliang He, Yukuan Jiang, Qian Li, Leishi Xiao
The short-circuit current in a substation may result in not only step voltage and touch voltage on person, but also interference in secondary cable. In this paper, the effect of the short-circuit current on the interference in the secondary cable was investigated by experiment. By making a single-line-to-ground fault in an actual 220/110 kV substation artificially, the transient voltages in various grounded and loaded cables were measured. The effective way to reduce the interference in the secondary cables was discussed. The most useful method is making the grounding grid dense or using grounding conductor with low resistance which can reduce the potential difference on the grounding grid.
{"title":"Experimental research on interference in secondary cable from short-circuit current in substations","authors":"Bo Zhang, Jinliang He, Yukuan Jiang, Qian Li, Leishi Xiao","doi":"10.1109/SIPDA.2015.7339298","DOIUrl":"https://doi.org/10.1109/SIPDA.2015.7339298","url":null,"abstract":"The short-circuit current in a substation may result in not only step voltage and touch voltage on person, but also interference in secondary cable. In this paper, the effect of the short-circuit current on the interference in the secondary cable was investigated by experiment. By making a single-line-to-ground fault in an actual 220/110 kV substation artificially, the transient voltages in various grounded and loaded cables were measured. The effective way to reduce the interference in the secondary cables was discussed. The most useful method is making the grounding grid dense or using grounding conductor with low resistance which can reduce the potential difference on the grounding grid.","PeriodicalId":296478,"journal":{"name":"2015 International Symposium on Lightning Protection (XIII SIPDA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125676591","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}
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