2022 36th International Conference on Lightning Protection (ICLP)最新文献

{"title":"Research on Electromechanical Disturbance Propagation Control for AC Interconnected Area Power Grids under Lightning Stroke","authors":"Xia Hua, C. Tong, Liang Wang, Yi Hong, Jiahuan Feng, Zhihao Fang, Jinwen Mai, Xujiang Shi, Yang Xu","doi":"10.1109/ICLP56858.2022.9942455","DOIUrl":"https://doi.org/10.1109/ICLP56858.2022.9942455","url":null,"abstract":"The short circuit caused by lightning stroke is one of the main causes of large disturbance in power system. In this paper, the propagation characteristics of electromechanical disturbance are analyzed in power systems. First, the zero transmission control and perturbation quenching control methods for electromechanical disturbance propagation in AC interconnected power grids are proposed based on superconducting magnetic energy storage (SMES). Subsequently, combined with lightning early warning system, the control strategy of electromechanical disturbance propagation in AC interconnected power grid under lightning stroke is obtained. Finally, the validity of the proposed control strategy is verified by PSCAD / EMTDC simulation.","PeriodicalId":403323,"journal":{"name":"2022 36th International Conference on Lightning Protection (ICLP)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128285450","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":"A Simplified Dynamic Surge Impedance Model with Corona Effect for Grounding Down-Leads of Composite Pylons","authors":"Hanchi Zhang, K. Yin, K. See, Qian Wang, F. D. da Silva, C. Bak","doi":"10.1109/ICLP56858.2022.9942634","DOIUrl":"https://doi.org/10.1109/ICLP56858.2022.9942634","url":null,"abstract":"Design of a novel 400 kV fully composite pylon utilizes external down-leads to bring grounding potential to earth wires. In lightning transient studies, the corona effect on the thin-wire down-leads should not be neglected. A simplified dynamic surge impedance model for thin-wire vertical conductors considering voltage-dependent surge corona is proposed. The model describes the relationship between corona development and the surge overvoltage, it focuses on the macro effect of corona on the surge response of conductors, and it ignores the micro plasma dynamics inside the corona. Higher applied lightning current peaks will cause a longer corona radius and cause more reduction in overvoltage. If the front time of applied lightning impulse current increases, the maximum corona radius increases first and then decreases, because the corona development is dominated by expansion velocity and critical streamer-tip electric field in succession. The dynamic surge impedance model shows a reduction of the overvoltage at the top of the conductor by 40% approximately compared with a constant surge impedance model without considering corona, which shows it is necessary to consider the corona effect in the lightning transients research of thin-wire grounding devices.","PeriodicalId":403323,"journal":{"name":"2022 36th International Conference on Lightning Protection (ICLP)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128425573","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":"Lightning Induced Voltages: A Comparison Between Mathematical Modelling and Measurements on Reduced Scale Structures of Offshore Oil Platforms","authors":"A. Panicali, Eduardo F. da Costa, Ricardo Hiroshi Minoda, M. Shigihara, Felipe Ricordi Gismoti Guimarães, C. Cavaliere, Vinicius Zimmermann Silva, Marcos Leonardo Ramos","doi":"10.1109/ICLP56858.2022.9942595","DOIUrl":"https://doi.org/10.1109/ICLP56858.2022.9942595","url":null,"abstract":"This paper focus on the expected accuracy of some mathematical modelling techniques for evaluating the behavior of electrically large metallic structures, such as offshore oil platforms, under the effects of lightning currents. Comparison to measurements obtained on three reduced (1:100) scale models is described, each one presenting typical configuration present in most platforms. This work aimed the development of some specific experimental procedures necessary for achieving a close correspondence to numerical models. Measurements were performed at the newly inaugurated lEE laboratory University of Sao Paulo, Brazil: an overview of the installations and experimental procedures are provided in the text. In conclusion it was shown that the mathematical modelling allows to estimate with reasonable accuracy the main characteristics of the electromagnetic environment on large metallic structures under the influence of lightning.","PeriodicalId":403323,"journal":{"name":"2022 36th International Conference on Lightning Protection (ICLP)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127112041","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":"Numerical analysis of the criteria of arc root jump in lightning sweeping on resistive surface","authors":"Yakun Liu, Chenguang Zhang, E. Williams, Cien Xiao, Zeyang Zhao, Siyuan Shen","doi":"10.1109/ICLP56858.2022.9942618","DOIUrl":"https://doi.org/10.1109/ICLP56858.2022.9942618","url":null,"abstract":"Lightning sweeping phenomenon is known to occur frequently when lightning strikes the high-speed moving objects with a velocity greater than the migration speed of positive ions. The jumping behaviors of arc roots on the connected resistive surface are key parameters in lightning protection of fast-moving objects. Whereas, the mechanisms of the arc root jump are still not understood. This work focuses on numerical analysis of the criteria in arc root jump in lightning sweeping on the resistive surface. The threshold of potential difference required in air gap breakdown between the arc column and the resistive surface is calculated when the jump behavior of arc root arises. The minimum arc column length led to the potential difference is deduced. Lastly, the criteria considering both the mechanisms of voltage breakdown and the maintenance of the newly-formed arc channel are put forward in arc root jump. The conclusions contribute to the modeling of arc sweeping of lightning and its protection.","PeriodicalId":403323,"journal":{"name":"2022 36th International Conference on Lightning Protection (ICLP)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130161093","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":"Using Machine Learning to Identify Lightning in Paintings","authors":"Sansha Gupta, Jason Ziemons, E. Trengove","doi":"10.1109/ICLP56858.2022.9942464","DOIUrl":"https://doi.org/10.1109/ICLP56858.2022.9942464","url":null,"abstract":"Benjamin Franklin has been closely associated with lightning ever since his famous investigation into the nature of lightning by flying a kite during a thunderstorm. From 1776 until 1785 he was the first American diplomat in Paris, France. He became a cult figure in France and his portrait was reproduced on everything from coins to snuffboxes. Since Franklin is so intimately connected to the idea of lightning, this study sought to determine whether there was an increase in the number of depictions of lightning in paintings in France around his time there as a diplomat. We used machine learning to identify lightning in paintings from the Louvre museum's database. Although there did not seem to be an increase in paintings of lightning around the time that Franklin was in Paris, the study is nonetheless an interesting application of machine learning to art works.","PeriodicalId":403323,"journal":{"name":"2022 36th International Conference on Lightning Protection (ICLP)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133015220","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":"Relation of Lightning Induced Flashovers with Stroke Distance and Current Peak","authors":"F. Tossani, F. Napolitano, A. Borghetti, C. Nucci, C. Tong","doi":"10.1109/ICLP56858.2022.9942585","DOIUrl":"https://doi.org/10.1109/ICLP56858.2022.9942585","url":null,"abstract":"Lightning current peak amplitudes and stroke locations are data provided by lightning location systems, albeit with some approximation. We argue that a minimum threshold/value of the ratio between current peak and distance of the stroke location from the line must be reached for an insulation flashover to occur. Equations and/or models providing a relation among induced voltage values, distance and current peak are available: the paper compares the results predicted by Rusck's formula and Darveniza's formula, with those provided by the more detailed model implemented in the LIOV code. The assessment of the accuracy of such a relation is important also for the estimation of the minimum collecting area around the line that includes all dangerous events, which is needed for the calculation of the lightning performance of a power distribution line with a Monte Carlo-based approach. The paper proposes a method for estimating the probability of flashover based on the current peak to distance ratio within the limits of the lightning location systems accuracy.","PeriodicalId":403323,"journal":{"name":"2022 36th International Conference on Lightning Protection (ICLP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132068379","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":"An investigation of lightning impulse on earthing materials and fulgurites formation","authors":"Arunima Shukla, Vikas Almadi, Bernd Moosburger, J. Birkl, R. Brocke, Sunil Saini, Devesh Jaiswal","doi":"10.1109/ICLP56858.2022.9942632","DOIUrl":"https://doi.org/10.1109/ICLP56858.2022.9942632","url":null,"abstract":"The fulgurites are the unwanted product of the petrified lightning which should be avoided in the earth termination system. The lightning protection system has three main parts; air termination system, down conductor, and earth termination system. Fulgurite formation increases the earth's resistance value. Therefore, it is important to have a backfill material that can resist the fulgurites formation which will further provide an easy path to the charges. The testing for short impulse and long duration tests were done on sand and backfill materials. Two different backfill materials were used for the experimental study.","PeriodicalId":403323,"journal":{"name":"2022 36th International Conference on Lightning Protection (ICLP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114204836","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":"A Study to Understand the Corrosion-Effect of Backfilled Copper-bonded Electrodes","authors":"Arunima Shukla, Vikas Almadi, S. Saini, Devesh Jaiswal","doi":"10.1109/ICLP56858.2022.9942537","DOIUrl":"https://doi.org/10.1109/ICLP56858.2022.9942537","url":null,"abstract":"The electrodes are used for the easy dissipation of charges in the ground for lightning protection. The chemical heterogeneity of soil makes the whole system highly sensitive such as high acidity or high alkalinity of soil which therefore results in an increased corrosive environment for the electrodes. Backfill or earth enhancement compound is also used in the earth termination system as a replacement of soil surrounding the electrodes. Various studies have been conducted to show the importance of backfill or earth enhancement compounds in reducing the resistance of the earth pit. Therefore, this study has been conducted to understand the effect of backfilling from a corrosion point of view. A salt spray test chamber is used, and tests are performed as per ASTM B117. The results show a significant contribution of backfilling to protect the electrode from corroding.","PeriodicalId":403323,"journal":{"name":"2022 36th International Conference on Lightning Protection (ICLP)","volume":"228 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115278012","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":"Simulation of the atmospheric electric field and current structure for sensors with different geometry in relation to the electric current measured in the external circuit","authors":"K. Sobolewski, M. Kubicki","doi":"10.1109/ICLP56858.2022.9942556","DOIUrl":"https://doi.org/10.1109/ICLP56858.2022.9942556","url":null,"abstract":"Electric field measurements have many scientific applications. Their results can be used in atmospheric electricity, optimisation of electric safety, e.g. lightning protection and meteorology. However, a measurement should be performed equally reliably to draw reliable conclusions. In theory and practice, you can find various measurement methods, some used for many years and which can be verified in terms of their accuracy using the possibility of computer simulations. This work contains a field analysis of examples of electric field sensors, based on which a discussion was held and practical conclusions were drawn. Described measurement methodology is often used for measurements of lightning electric field distribution. The article concerns the theory of sensors for measuring electric field and current based on numerical simulations. It can be used both in the problems of the physics of atmospheric lightning discharges and fair-weather electricity. Electric field E and $mathbf{Delta} mathbf{E}$ measurements are widely described in the literature and have large technical applications. Measurements of the Maxwell current density and its components for thunderstorm electricity and fair weather conditions are associated with many interpretations and technical difficulties. It may touch cases like currents under a thundercloud approaching or currents from distant discharges. For example, Krider and Musser [1] determined the Maxwell current in a situation where $mathbf{Ez}(mathbf{t}) =mathbf{0}$ (conduction current is that it always vanishes when E is zero). Current measurement methods based directly on Gauss or Ampere-Maxwell equations and selecting appropriate sensor surfaces to carry out the integration operation on these surfaces or the path that bounds that surface may prove difficult or impossible. It needs to choose a unique Gaussian surface to calculate the electric field and a particular Amperian loop to determine the magnetic field and current density.","PeriodicalId":403323,"journal":{"name":"2022 36th International Conference on Lightning Protection (ICLP)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125141003","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":"Ground Flash Density Map for Mauritius and its Use for Improving the Lightning Performance of Transmission Lines","authors":"Ismaël Adam Essackjee","doi":"10.1109/ICLP56858.2022.9942563","DOIUrl":"https://doi.org/10.1109/ICLP56858.2022.9942563","url":null,"abstract":"Lightning is a high current discharge which can cause damage and injury. Although unpredictable by nature, lightning strokes create a pattern over time which can help in the design and the adoption of specific mitigating measures. Although not a lightning hotspot, Mauritius has been affected by this phenomenon down the years, especially the power system. In this study, data collected from lightning activities in Mauritius from 2010 to 2020 by WWLLN have been used to come up with a ground flash density map, both spacial and temporal for the country. Based on this map and the power grid of Mauritius, the transmission lines which are more prone to lightning strokes will be identified. These lines can then be prioritized for the implementation of mitigating measures for performance improvement against lightning. Besides the power system operators, the findings of this paper will be of interest to meteorologists, architects, engineers in the building services and communication service providers as well.","PeriodicalId":403323,"journal":{"name":"2022 36th International Conference on Lightning Protection (ICLP)","volume":"4 9-10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132365550","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}