2023 12th Asia-Pacific International Conference on Lightning (APL)最新文献_第2页

Development of cost-effective lightning protection measures for underprivileged communities 为贫困社区发展具成本效益的防雷措施

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181896

Chandima Gomes, M. Guthrie

{"title":"Development of cost-effective lightning protection measures for underprivileged communities","authors":"Chandima Gomes, M. Guthrie","doi":"10.1109/APL57308.2023.10181896","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181896","url":null,"abstract":"Personal and group lightning safety modules for outdoor applications are designed and analyzed by simulation. The international standards on lightning protection (IEC 62305) comprehensively detail the design and construction of protection for modern construction. However, the applicability of such standard practices in safeguarding human beings in underprivileged communities from the five basic lightning injury mechanisms (cost factors, complications in implementation, strategic issues such as weight, stability, theft, etc.) is a long-standing question. In this study, we construct lightning protection schemes for individual and group applications, on both land and water, which will lead to the safeguarding of human lives of both underprivileged communities and amusement/leisure seekers. Simulations are done with PSCAD and COMSOL software to find the current and potential distribution in pre-determined metallic structures to compute the optimum dimensions, best-suited materials, and insulation requirements to minimize direct strike, side flash, touch potential, step potential and upward streamer hazards as well as to ensure mechanical and thermal stability. The best-performing designs are proposed to be constructed and tested by applying high voltage and current impulses under laboratory conditions to justify the suitability of the schemes as lightning safety measures for the general public. The proven structures could then be patented and commercialized for public applications.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114675791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EMTP Simulation Model for Mutual Grounding Resistance considering Propagation Time 考虑传播时间的互接地电阻EMTP仿真模型

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181338

S. Sekioka

引用次数: 0

Location of the space stem in long negative laboratory sparks 空间杆在长负极实验室火花中的位置

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181858

Xiangen Zhao, Yaping Du, Lili Guo, Yang Liu, Junjia He

引用次数: 0

On the Striking Distance for the Design of Lightning Protection System for Substations in Selected Countries 有关国家变电站防雷系统设计的打击距离问题

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181684

S. C. Lim, Md Mahmudul Hasan, Ong Chang Shen

{"title":"On the Striking Distance for the Design of Lightning Protection System for Substations in Selected Countries","authors":"S. C. Lim, Md Mahmudul Hasan, Ong Chang Shen","doi":"10.1109/APL57308.2023.10181684","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181684","url":null,"abstract":"Since the dawn of civilization, humans have been fascinated by one of the most common natural occurrences called lightning. It’s not just a fascinating but also dangerous occurrence for electrical equipment. Substation, which is one of the most important parts of power transmission and distribution, is susceptible to lightning strikes. If lightning directly strikes a substation, it may cause huge damage to the equipment of the substation. Thus, a proper lightning protection system is required in order to protect the substation. Striking distance is one of the most important aspects of a substation’s lightning protection design. This study aims to analyze the striking distance range for Japan, Austria, Brazil, Sweden and the USA based on methodologies and recorded lightning current found in the literature. The values of lightning peak current and types of lightning protection systems (mast/wire) are considered in the calculation of striking distance for the selected countries. Among the countries studied, the USA has the greatest striking distance range, while Sweden has the smallest. It is also observed that the striking distance range is significantly higher when the lightning mast is used instead of shield wire as lightning protection device. In addition, this paper presents a graphical representation of the recommended striking distance range for the selected countries which will help the designer to efficiently design the lightning protection system of substations for those selected countries.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125724889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Risk Assessment of Surge Arresters for Efficient Maintenance of Medium-voltage Distribution Lines 高效维护中压配电线路的避雷器风险评估

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181353

Masahiro Ueda, S. Yasui, Hidekazu Tanaka, Tomoaki Nonoyama, Y. Kunii

引用次数: 0

Statistical Cloud-to-Ground Lightning Data and Its Implementation for 33kV Overhead Line in Peninsular Malaysia 马来西亚半岛33kV架空线路云对地闪电统计数据及其实现

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181750

N. Hatta, N. Abdullah, M. Osman, Azwadi Mohamad

引用次数: 0

Analysis of Lightning Activities in Wind Farm Based on Lightning Location data and Voronoi Diagram 基于闪电位置数据和Voronoi图的风电场闪电活动分析

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10182068

Yu Wang, Ze Liu, Fengquan Li, Zhe Li, Jian Li, S. Gu

{"title":"Analysis of Lightning Activities in Wind Farm Based on Lightning Location data and Voronoi Diagram","authors":"Yu Wang, Ze Liu, Fengquan Li, Zhe Li, Jian Li, S. Gu","doi":"10.1109/APL57308.2023.10182068","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182068","url":null,"abstract":"Addressing the issue that the mutual shielding effect of several wind turbines is not fully considered in the current techniques of assessing the lightning risk of wind farms. This study suggests a Voronoi diagram-based method for analyzing lightning activity in wind farm with wind turbine clusters. The outcomes of lightning activity analysis using the conventional grid approach and the Voronoi diagram method suggested in this research are contrasted using a wind farm in Yunnan Province of China as an example. It demonstrates that the suggested approach is better suited for determining the lightning risk associated with a single wind turbine. It is capable of performing an analysis of the lightning parameters of a single wind turbine, including the cloud-ground lightning density, positive lightning ratio, median peak current, and average number of lightning return strokes, etc. Additionally, this approach may detect changes in pertinent lightning parameters both before and after the wind farm is set up. Therefore, it is more appropriate to offer technical assistance to wind farms, especially large wind farms, in order to develop specialized lightning protection strategies.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127966209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Indirect Lightning Surge Analysis of Insulated Rail Bracket and Station Arrester in a Fourth Rail LRT System 四轨轻轨系统绝缘轨架和车站避雷器的间接雷击浪涌分析

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181709

F. A. Rahman, U. Amirulddin, M. Kadir, M. Osman

{"title":"Indirect Lightning Surge Analysis of Insulated Rail Bracket and Station Arrester in a Fourth Rail LRT System","authors":"F. A. Rahman, U. Amirulddin, M. Kadir, M. Osman","doi":"10.1109/APL57308.2023.10181709","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181709","url":null,"abstract":"This paper presents a study comparing the performance of a fourth rail direct current (DC) urban transit system when affected by an indirect lightning strike. Two different designs were used: one with a Cast Epoxy (CE) bracket equipped with a 3EB4-010 arrester, and the other with a Glass Reinforced Plastic (GRP) bracket equipped with a PDTA09 arrester. To replicate the indirect lightning strike, a lightning induced overvoltage was generated using the Rusck model. The model utilized the sum of two Heidler functions as the input for the lightning channel base current, assuming a perfectly conducting ground. The objective of this study is to determine whether an indirect lightning strike has any impact on the performance of the insulated rail bracket and station arrester of the LRT Kelana Jaya line, considering their different materials and residual voltage limits, respectively. Simulations were conducted using the Electromagnetic Transients Program - Restructured Version (EMTP-RV), and the performance of the two designs was compared when subjected to a 30 kA $(5/ 80 mu mathrm{s})$ induced current. The results showed that the GRP bracket, which has a higher permittivity, performed better when paired with the PDTA09 arrester, which has a lower residual voltage limit. This combination resulted in slightly lower induced overvoltage and significantly lower residual voltage being clamped by the station arrester.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127969771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modes of lightning attachment to aircraft at different stroke currents and relative positions of descending lightning leader 在不同的冲程电流和下降雷锋的相对位置下闪电附着在飞机上的模式

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10182199

Sayantan Das, U. Kumar

{"title":"Modes of lightning attachment to aircraft at different stroke currents and relative positions of descending lightning leader","authors":"Sayantan Das, U. Kumar","doi":"10.1109/APL57308.2023.10182199","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182199","url":null,"abstract":"One of the major aspects of modern aircraft design is suitable protective measures against lightning which need a deeper understanding of the phenomena of a lightning strike to aircraft. Lightning attachment to aircraft can happen in two modes, aircraft-initiated and aircraft-intercepted. In the former, under the influence of thundercloud or lightning leader, the aircraft initiates stable bipolar leader discharges to complete the bridging. While in aircraft-intercepted mode, attachment takes place by direct streamer bridging between the lightning leader and aircraft. As different mechanisms are involved in the two modes of attachment, the corresponding probable initial attachment regions are also different. The mode of attachment is decided by the spatial field distribution, which mainly depends on the prospective stroke current and relative position of the descending leader. Different modes of attachment to aircraft are dominant at different stroke current ranges. The present work aims to identify the stroke-current ranges where aircraft-initiated and aircraft-intercepted modes are most probable. The investigation is carried out for small and medium-sized aircraft.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125296163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance of Bentonite and Zeolite Mixtures as Grounding Enhancement Materials 膨润土和沸石混合物作为增强接地材料的性能

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10182022

W. Ahmad, N. Marudin, J. Jasni, M. Ab-Kadir

{"title":"Performance of Bentonite and Zeolite Mixtures as Grounding Enhancement Materials","authors":"W. Ahmad, N. Marudin, J. Jasni, M. Ab-Kadir","doi":"10.1109/APL57308.2023.10182022","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182022","url":null,"abstract":"Grounding system is essential in order to provide protection and to reduce the risk of severe electrical shock to the personnel as well as power system equipment during both normal and fault operation. A properly secured grounding system will enable the fault current to be dispersed to earth at the shortest time possible. Therefore, it is important to have a good grounding system in both normal and fault conditions, and one way to achieve that is by adding NEMs to treat its surrounding soil, where Bentonite and Zeolite were considered in this study. These two NEMs were mixed with water and their performances were compared to a Reference grounding system where there is no NEM installed in the vicinity of the ground conductor. The performance of such grounding systems were measured by the percentage reduction of their earth resistances, which were measured daily for 150 days, i.e. from 19th December 2016 till 18th May 2017 where Fall-of-Potential technique was employed. Note that in this work, it has found that the best grounding system in the descending order were Bentonite 100%, Bentonite and Zeolite Mix A, Bentonite and Zeolite Mix B, Zeolite 100% and References grounding systems. However, being Mix A was having a slightly better performance compared to its counterpart Mix B, it would be interesting to further engage with various mixtures of Bentonite and Zeolite as grounding enhancement materials for future works. Note that Bentonite ratio was more in Mix A compared to Mix B.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126719722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2