Pub Date : 2012-11-12DOI: 10.1109/ICLP.2012.6344205
M. Manhardt, F. Heidler, K. Stimper
Subject matter of this paper is the analysis of the slow-varying electric fields and the associated currents of the total of 35 negative upward lightning initiated by the Peissenberg tower, Germany. 34 of which were from winter upward lightning and only one from summer upward lightning. It appears that all of the winter upward lightning were initiated without nearby preceding lightning activity (called “self-initiated” lightning) and only the summer lightning was triggered by nearby lightning activity (called “other-triggered” lightning). The slow-varying electric fields of the winter upward lightning showed a fast rise characterized by the 10-to-90% risetime, with an arithmetic mean of 13.8 ms. After attaining the maximum, the electric field turned into a slow decay being characterized by the time on half value which was evaluated to having the arithmetic mean of 441 ms. Transported charges to ground were on average 44.8 C and on maximum 165 C. The maximum value of the electric field was 39.9 kV/m on average, with the highest value being 64.5 kV/m. For the electric fields, higher values were prevented by recovery effects such as the corona from objects at ground and the redistribution of the charge in the thundercloud. Due to these effects, no or only weak correlations were found between the 10-to-90% risetime, the time on half value, the charge, and the maximum of the electric field. From additional measurements with a field mill, it was found that the electric field recovers to the starting level within some seconds.
{"title":"The electric field of negative upward lightning strikes at the Peissenberg tower, Germany","authors":"M. Manhardt, F. Heidler, K. Stimper","doi":"10.1109/ICLP.2012.6344205","DOIUrl":"https://doi.org/10.1109/ICLP.2012.6344205","url":null,"abstract":"Subject matter of this paper is the analysis of the slow-varying electric fields and the associated currents of the total of 35 negative upward lightning initiated by the Peissenberg tower, Germany. 34 of which were from winter upward lightning and only one from summer upward lightning. It appears that all of the winter upward lightning were initiated without nearby preceding lightning activity (called “self-initiated” lightning) and only the summer lightning was triggered by nearby lightning activity (called “other-triggered” lightning). The slow-varying electric fields of the winter upward lightning showed a fast rise characterized by the 10-to-90% risetime, with an arithmetic mean of 13.8 ms. After attaining the maximum, the electric field turned into a slow decay being characterized by the time on half value which was evaluated to having the arithmetic mean of 441 ms. Transported charges to ground were on average 44.8 C and on maximum 165 C. The maximum value of the electric field was 39.9 kV/m on average, with the highest value being 64.5 kV/m. For the electric fields, higher values were prevented by recovery effects such as the corona from objects at ground and the redistribution of the charge in the thundercloud. Due to these effects, no or only weak correlations were found between the 10-to-90% risetime, the time on half value, the charge, and the maximum of the electric field. From additional measurements with a field mill, it was found that the electric field recovers to the starting level within some seconds.","PeriodicalId":400743,"journal":{"name":"2012 International Conference on Lightning Protection (ICLP)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126956204","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 : 2012-11-12DOI: 10.1109/ICLP.2012.6344332
S. Yokoyama, Y. Yasuda, M. Minowa, S. Sekioka, K. Yamamoto, N. Honjo, T. Sato
We investigated various types of damages on a wind turbine blades and estimated the possible causes of them. The cause of catastrophic damages such as explosion or falling down is different from that of less serious damages such as a surface tearing. It may be necessary to protect wind turbine blades by means of special measure against severe lightning for example lightning in winter. Also we should clarify the validity of long gap discharge test in the laboratory as the simulation of actual lightning. It leads to establishing appropriate test methods.
{"title":"Clarification of the mechanism of wind turbine blade damage taking lightning characteristics into consideration and relevant research project","authors":"S. Yokoyama, Y. Yasuda, M. Minowa, S. Sekioka, K. Yamamoto, N. Honjo, T. Sato","doi":"10.1109/ICLP.2012.6344332","DOIUrl":"https://doi.org/10.1109/ICLP.2012.6344332","url":null,"abstract":"We investigated various types of damages on a wind turbine blades and estimated the possible causes of them. The cause of catastrophic damages such as explosion or falling down is different from that of less serious damages such as a surface tearing. It may be necessary to protect wind turbine blades by means of special measure against severe lightning for example lightning in winter. Also we should clarify the validity of long gap discharge test in the laboratory as the simulation of actual lightning. It leads to establishing appropriate test methods.","PeriodicalId":400743,"journal":{"name":"2012 International Conference on Lightning Protection (ICLP)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130643068","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 : 2012-11-12DOI: 10.1109/ICLP.2012.6344321
C. Mata, A. G. Mata
A Lightning Protection System (LPS) was designed and built at Launch Complex 39B (LC39B), at the Kennedy Space Center (KSC), Florida in 2009. This LPS was instrumented with comprehensive meteorological and lightning data acquisition systems that were deployed from late 2010 until mid 2011. The first direct strikes to the LPS were recorded in March of 2011, when a limited number of sensors had been activated. The lightning instrumentation system detected a total of 70 nearby strokes and 19 direct strokes to the LPS, in 2011, 2 of the 19 direct strokes to the LPS had two simultaneous ground attachment points (in both instances one channel terminated on the LPS and the other on the nearby ground). In addition to the 70 nearby strokes, some more distant nearby strokes where captured on video records for which limited data were acquired. Instrumentation deployment chronological milestones, a summary of lightning strikes (direct and nearby), high speed video frames, downconductor currents, and dH/dt and dE/dt typical waveforms for direct and nearby strokes are presented in this paper.
{"title":"Summary of 2011 direct and nearby lightning strikes to Launch Complex 39B, Kennedy Space Center, Florida","authors":"C. Mata, A. G. Mata","doi":"10.1109/ICLP.2012.6344321","DOIUrl":"https://doi.org/10.1109/ICLP.2012.6344321","url":null,"abstract":"A Lightning Protection System (LPS) was designed and built at Launch Complex 39B (LC39B), at the Kennedy Space Center (KSC), Florida in 2009. This LPS was instrumented with comprehensive meteorological and lightning data acquisition systems that were deployed from late 2010 until mid 2011. The first direct strikes to the LPS were recorded in March of 2011, when a limited number of sensors had been activated. The lightning instrumentation system detected a total of 70 nearby strokes and 19 direct strokes to the LPS, in 2011, 2 of the 19 direct strokes to the LPS had two simultaneous ground attachment points (in both instances one channel terminated on the LPS and the other on the nearby ground). In addition to the 70 nearby strokes, some more distant nearby strokes where captured on video records for which limited data were acquired. Instrumentation deployment chronological milestones, a summary of lightning strikes (direct and nearby), high speed video frames, downconductor currents, and dH/dt and dE/dt typical waveforms for direct and nearby strokes are presented in this paper.","PeriodicalId":400743,"journal":{"name":"2012 International Conference on Lightning Protection (ICLP)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130693893","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 : 2012-11-12DOI: 10.1109/ICLP.2012.6344238
M. Iwata, T. Ohtaka, Y. Kuzuma, Y. Goda
Some metal strands of OPGW (composite fiber-optic ground wire) are sometimes melted and broken by lightning strikes. DC arc tests simulating lightning strikes have thus been performed to obtain their melting and breaking characteristics. In this paper, calculations regarding these melting characteristics are performed considering the transferred heat and its area from the arc to the strands. The melting characteristics of strands are calculated with an arc current of 0.1 - 100 kA, considering the current prescribed in the IEC standard and the measured actual lightning current. The calculation results of the strand melting duration depending on the arc current show a good agreement with the experimental values obtained in DC arc tests.
{"title":"Analytical investigation on OPGW strands melting due to DC arc discharge simulating lightning strike","authors":"M. Iwata, T. Ohtaka, Y. Kuzuma, Y. Goda","doi":"10.1109/ICLP.2012.6344238","DOIUrl":"https://doi.org/10.1109/ICLP.2012.6344238","url":null,"abstract":"Some metal strands of OPGW (composite fiber-optic ground wire) are sometimes melted and broken by lightning strikes. DC arc tests simulating lightning strikes have thus been performed to obtain their melting and breaking characteristics. In this paper, calculations regarding these melting characteristics are performed considering the transferred heat and its area from the arc to the strands. The melting characteristics of strands are calculated with an arc current of 0.1 - 100 kA, considering the current prescribed in the IEC standard and the measured actual lightning current. The calculation results of the strand melting duration depending on the arc current show a good agreement with the experimental values obtained in DC arc tests.","PeriodicalId":400743,"journal":{"name":"2012 International Conference on Lightning Protection (ICLP)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116562413","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 : 2012-11-12DOI: 10.1109/ICLP.2012.6344399
F. Avella, J. Diaz, D. Ariza, O. Escobar, F. Roman
To study the influence of the wind speed on the generation of corona current in two different needles, a wind tunnel was designed and constructed. Needles were tested in a point-to-plane arrangement under laminar air flow. A constant background voltage is applied to the electrode arrangement, while air velocity varied from 0 m/s up to 16 m/s, a wind velocity near to thunderstorm conditions. Results show that the corona onset voltage of the needles is independent of the air velocity; however, the corona current magnitude increases with an increase of the air velocity.
{"title":"Influence of thunderstorm-like wind velocities on point discharge corona currents","authors":"F. Avella, J. Diaz, D. Ariza, O. Escobar, F. Roman","doi":"10.1109/ICLP.2012.6344399","DOIUrl":"https://doi.org/10.1109/ICLP.2012.6344399","url":null,"abstract":"To study the influence of the wind speed on the generation of corona current in two different needles, a wind tunnel was designed and constructed. Needles were tested in a point-to-plane arrangement under laminar air flow. A constant background voltage is applied to the electrode arrangement, while air velocity varied from 0 m/s up to 16 m/s, a wind velocity near to thunderstorm conditions. Results show that the corona onset voltage of the needles is independent of the air velocity; however, the corona current magnitude increases with an increase of the air velocity.","PeriodicalId":400743,"journal":{"name":"2012 International Conference on Lightning Protection (ICLP)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134052059","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 : 2012-11-12DOI: 10.1109/ICLP.2012.6344395
V. Shostak, O. Bormotov, D. Pavanello, W. Janischewskyj, F. Rachidi
An analysis of Canadian Lightning Detection Network (CLDN) data recorded during years 2004 - 2006 is performed for two selected areas in Canada within a 20-km radius around two tall structures: the CN Tower (CNT, 553 m) in Toronto and the Superstack (SS, 380 m) in Sudbury. The explored lightning characteristics include stroke polarity, lake water or land termination (WT or LT), ground stroke densities Ngs, stroke peak currents (including values of I50%, I95%, I5%), distributions of parameters. The results show noticeable differences between characteristics of lightning terminated to lake water and land. In Toronto area (Ngs ≈ 3.24 strokes/(km2·year)), a commonly accepted feature, according to which positive strokes exhibit dominating peak currents in comparison to negative ones, is confirmed only for WT lightning (not close to the CNT), especially in the range of high currents. For LT lightning in the range of current amplitudes close to 50% values, the negative strokes are characterized by larger peaks (by more than 30%) with respect to positive ones. No positive strokes to water were recorded within 5 km near the CNT during the period of analysis. While WT events exhibit a lower Ngs than LT ones, they show larger peak currents. The Sudbury area, characterized by a lower lightning activity (Ngs ≈ 0.91 strokes/(km2·year)), shows the common relation between peak currents of positive and negative polarities (first are dominating). For the SS, the estimated number of upward lightning looks rather low: 0.47 strokes or 0.37 flashes per year. For the CNT, it is about 32 strokes or 14 upward flashes per year. Distributions of Ngs along the distance from the tall objects, beside the increased levels near object, contain dips next to object (up to 3 - 7 km).
{"title":"Analysis of lightning detection network data for selected areas in Canada","authors":"V. Shostak, O. Bormotov, D. Pavanello, W. Janischewskyj, F. Rachidi","doi":"10.1109/ICLP.2012.6344395","DOIUrl":"https://doi.org/10.1109/ICLP.2012.6344395","url":null,"abstract":"An analysis of Canadian Lightning Detection Network (CLDN) data recorded during years 2004 - 2006 is performed for two selected areas in Canada within a 20-km radius around two tall structures: the CN Tower (CNT, 553 m) in Toronto and the Superstack (SS, 380 m) in Sudbury. The explored lightning characteristics include stroke polarity, lake water or land termination (WT or LT), ground stroke densities Ngs, stroke peak currents (including values of I50%, I95%, I5%), distributions of parameters. The results show noticeable differences between characteristics of lightning terminated to lake water and land. In Toronto area (Ngs ≈ 3.24 strokes/(km2·year)), a commonly accepted feature, according to which positive strokes exhibit dominating peak currents in comparison to negative ones, is confirmed only for WT lightning (not close to the CNT), especially in the range of high currents. For LT lightning in the range of current amplitudes close to 50% values, the negative strokes are characterized by larger peaks (by more than 30%) with respect to positive ones. No positive strokes to water were recorded within 5 km near the CNT during the period of analysis. While WT events exhibit a lower Ngs than LT ones, they show larger peak currents. The Sudbury area, characterized by a lower lightning activity (Ngs ≈ 0.91 strokes/(km2·year)), shows the common relation between peak currents of positive and negative polarities (first are dominating). For the SS, the estimated number of upward lightning looks rather low: 0.47 strokes or 0.37 flashes per year. For the CNT, it is about 32 strokes or 14 upward flashes per year. Distributions of Ngs along the distance from the tall objects, beside the increased levels near object, contain dips next to object (up to 3 - 7 km).","PeriodicalId":400743,"journal":{"name":"2012 International Conference on Lightning Protection (ICLP)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134437453","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 : 2012-11-12DOI: 10.1109/ICLP.2012.6344308
Tao Lu, Ming-li Chen, Ya-ping Du
Although, lightning location network (LLN) has been widely used all over the world, its performance is still constrained by “site errors” as long as the direction-finder technique is deployed. Based on lightning data from a regional LLN consisted of 25 MDF/TOA combined sensors, a method for “site errors” estimation and correction was proposed and practiced. By comparing the lightning locations reported by at least 4 sensors between MDF and TOA techniques, the spatial and seasonal signatures of “site errors” for individual sensors were found and discussed. The signatures found are well consistent with those in literature. The “site errors” obtained were then used to correct and improve the accuracy of lightning locations reported by only 2 or 3 sensors. Results showed that the proposed “site errors” correction method could significantly improve the location accuracy of the LLN.
{"title":"Site errors estimation and correction for MDF/TOA combined lightning location network","authors":"Tao Lu, Ming-li Chen, Ya-ping Du","doi":"10.1109/ICLP.2012.6344308","DOIUrl":"https://doi.org/10.1109/ICLP.2012.6344308","url":null,"abstract":"Although, lightning location network (LLN) has been widely used all over the world, its performance is still constrained by “site errors” as long as the direction-finder technique is deployed. Based on lightning data from a regional LLN consisted of 25 MDF/TOA combined sensors, a method for “site errors” estimation and correction was proposed and practiced. By comparing the lightning locations reported by at least 4 sensors between MDF and TOA techniques, the spatial and seasonal signatures of “site errors” for individual sensors were found and discussed. The signatures found are well consistent with those in literature. The “site errors” obtained were then used to correct and improve the accuracy of lightning locations reported by only 2 or 3 sensors. Results showed that the proposed “site errors” correction method could significantly improve the location accuracy of the LLN.","PeriodicalId":400743,"journal":{"name":"2012 International Conference on Lightning Protection (ICLP)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122496211","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 : 2012-11-12DOI: 10.1109/ICLP.2012.6344327
H. Shimizu, N. Watanabe
Woodceramics is a carbon material made of woody material and is expected as an eco-material. The woodceramics can be used as an electrical conductor. To estimate the feasibility of the woodceramics as grounding electrode, the woodceramics plate was fabricated and the fundamental properties were investigated as grounding electrode. The resistance and density were measured by simple methods. The resistance of woodceramics plate was sufficiently low when the woodceramics was manufactured under the condition of annealing temperature of higher than 800 °C. The woodceramics plate had about one-ninth density the copper plate. The grounding resistance was also estimated. The grounding resistance of woodceramics electrode per 1 m2 was about 40 Ω and almost equal to that in case that copper grounding electrode was used. Furthermore, the impedance of the woodceramics electrode for surge current was measured. It was confirmed that the magnitude was sufficiently small. It was pointed out that the woodceramics can be applied to the grounding electrode.
{"title":"Grounding resistance of grounding electrode using carbon plate made of woody material","authors":"H. Shimizu, N. Watanabe","doi":"10.1109/ICLP.2012.6344327","DOIUrl":"https://doi.org/10.1109/ICLP.2012.6344327","url":null,"abstract":"Woodceramics is a carbon material made of woody material and is expected as an eco-material. The woodceramics can be used as an electrical conductor. To estimate the feasibility of the woodceramics as grounding electrode, the woodceramics plate was fabricated and the fundamental properties were investigated as grounding electrode. The resistance and density were measured by simple methods. The resistance of woodceramics plate was sufficiently low when the woodceramics was manufactured under the condition of annealing temperature of higher than 800 °C. The woodceramics plate had about one-ninth density the copper plate. The grounding resistance was also estimated. The grounding resistance of woodceramics electrode per 1 m2 was about 40 Ω and almost equal to that in case that copper grounding electrode was used. Furthermore, the impedance of the woodceramics electrode for surge current was measured. It was confirmed that the magnitude was sufficiently small. It was pointed out that the woodceramics can be applied to the grounding electrode.","PeriodicalId":400743,"journal":{"name":"2012 International Conference on Lightning Protection (ICLP)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122646810","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 : 2012-11-12DOI: 10.1109/ICLP.2012.6344394
L. Diaz, M. Martínez, J. Ramirez, M. Rubinstein
In this paper, the effect of the geometrical configuration of underground conductors and of the relative location of the lightning strike on induced voltages from lightning is studied. The position of the strike point that leads to the highest induced voltage is determined for buried cables for each configuration. The results show that the maximum voltages tend to appear at the extremities of the cables and at the point closest to the strike point. The overvoltages are lower for bare cables when compared to insulated cables. Overvoltage levels for typical negative subsequent return stroke currents used in this paper represent a risk for low voltage underground feeders and electronic, communication and control circuits.
{"title":"Lightning induced voltages in simple configurations of underground cables","authors":"L. Diaz, M. Martínez, J. Ramirez, M. Rubinstein","doi":"10.1109/ICLP.2012.6344394","DOIUrl":"https://doi.org/10.1109/ICLP.2012.6344394","url":null,"abstract":"In this paper, the effect of the geometrical configuration of underground conductors and of the relative location of the lightning strike on induced voltages from lightning is studied. The position of the strike point that leads to the highest induced voltage is determined for buried cables for each configuration. The results show that the maximum voltages tend to appear at the extremities of the cables and at the point closest to the strike point. The overvoltages are lower for bare cables when compared to insulated cables. Overvoltage levels for typical negative subsequent return stroke currents used in this paper represent a risk for low voltage underground feeders and electronic, communication and control circuits.","PeriodicalId":400743,"journal":{"name":"2012 International Conference on Lightning Protection (ICLP)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121234157","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 : 2012-11-12DOI: 10.1109/ICLP.2012.6344280
A. Temnikov, L. Chernensky, A. Orlov, M. Sokolova, T. Gerastenok, O. Belova
Results of the experimental investigations and physical simulation of the processes of lightning affection of the compacted and extended objects on models and the investigation of its lightning protection effectiveness using artificial charged aerosol clouds are presented. Peculiarities of affection of the grounded objects by the discharges from artificial charged aerosol clouds are presented and analyzed. Influence of the characteristics of lightning rod and object models (or lightning conductor and phase wire models) on the process of their affection by the discharge from charged aerosol has been analyzed. Comparison of the experimental results with the calculated and experimental methods of determination of the compacted and extended object lightning protection (in context of power objects) has been fulfilled. Recommendations on the improvement of lightning protection of the existing and projecting power energy objects have been proposed.
{"title":"Investigation of compacted and extended objects lightning protection effectiveness on models using artificial clouds of charged water aerosol","authors":"A. Temnikov, L. Chernensky, A. Orlov, M. Sokolova, T. Gerastenok, O. Belova","doi":"10.1109/ICLP.2012.6344280","DOIUrl":"https://doi.org/10.1109/ICLP.2012.6344280","url":null,"abstract":"Results of the experimental investigations and physical simulation of the processes of lightning affection of the compacted and extended objects on models and the investigation of its lightning protection effectiveness using artificial charged aerosol clouds are presented. Peculiarities of affection of the grounded objects by the discharges from artificial charged aerosol clouds are presented and analyzed. Influence of the characteristics of lightning rod and object models (or lightning conductor and phase wire models) on the process of their affection by the discharge from charged aerosol has been analyzed. Comparison of the experimental results with the calculated and experimental methods of determination of the compacted and extended object lightning protection (in context of power objects) has been fulfilled. Recommendations on the improvement of lightning protection of the existing and projecting power energy objects have been proposed.","PeriodicalId":400743,"journal":{"name":"2012 International Conference on Lightning Protection (ICLP)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129100153","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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