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

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Common Mistakes in Lightning Protection Design and Installation 防雷设计与安装中的常见错误
2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10182110
Chua Kein Huat, Hau Lee Cheun, Albert Kow Kek Hing, Lim Kim Ten, Steven Chia, Hoo Dick Sang
{"title":"Common Mistakes in Lightning Protection Design and Installation","authors":"Chua Kein Huat, Hau Lee Cheun, Albert Kow Kek Hing, Lim Kim Ten, Steven Chia, Hoo Dick Sang","doi":"10.1109/APL57308.2023.10182110","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182110","url":null,"abstract":"Improper design and installation of lightning protection systems can result in severe consequences for buildings and their occupants. This paper presents some common mistakes in lightning protection design and installation, including the absence of a lightning protection system for metal tanks, inadequate surge protection for field devices, improper cable management, and inadequate earthing methods. Remedial actions have been proposed to mitigate these mistakes, including the installation of a lightning protection system for metal tanks, the installation of a surge protection device (SPD) on the field devices, proper cable management and segregation of signal cables, the adequate separation distance between the electrical earth (E) chamber and the extra low-voltage earth (ELVE) chamber, and proper record of resistance value between the E and ELVE chambers. Finally, the paper emphasizes the importance of hiring qualified professionals to design and install lightning protection systems to ensure proper design and installation.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"4 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":"123749554","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
Attachment Process of A Downward Negative Flash with Multiple Return Strokes Struck to a 356-m-Tall Tower in Southern China 华南地区356米高的高塔上多次回击向下负闪的附着过程
2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181905
Yan Gao, Ming-li Chen, Shaoyang Wang, Zilong Qin, Zongxu Qiu, Ge Zhang, Ran Cai, Jun Zhang, Yaping Du
{"title":"Attachment Process of A Downward Negative Flash with Multiple Return Strokes Struck to a 356-m-Tall Tower in Southern China","authors":"Yan Gao, Ming-li Chen, Shaoyang Wang, Zilong Qin, Zongxu Qiu, Ge Zhang, Ran Cai, Jun Zhang, Yaping Du","doi":"10.1109/APL57308.2023.10181905","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181905","url":null,"abstract":"A downward negative flash with nine return strokes struck to the 356-m Shenzhen Tower was analyzed. The high-speed camera captured upward connecting leader (UCL) channels in the first and two subsequent strokes of F1612. The observation results show that none of the downward negative leader channels completely propagated to the tower tip before the occurrence of return stroke (RS), so that the UCL was supposed to be initiated from the tower tip and the attachment process occurred in each RS of this flash. The possible altitude range of the attachment point in each subsequent RS was different. It was found that the larger value of downward dart leader speed might cause the higher altitude of the attachment point. These results could help researchers gain a better understanding of the lightning attachment process, especially occurred in the subsequent return stroke.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"44 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":"122931401","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
Impact of Lightning on Tower Footing Design of 500 kV Transmission Line 雷电对500kv输电线路塔基设计的影响
2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181321
N. A. Mohd Nasir, M. S. Mohd Nasir, M. S. A. Rahman, M. Ab-Kadir, N. Azis, M. Osman, U. Amirulddin
{"title":"Impact of Lightning on Tower Footing Design of 500 kV Transmission Line","authors":"N. A. Mohd Nasir, M. S. Mohd Nasir, M. S. A. Rahman, M. Ab-Kadir, N. Azis, M. Osman, U. Amirulddin","doi":"10.1109/APL57308.2023.10181321","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181321","url":null,"abstract":"This study evaluates several tower earthing designs for improving 500 kV transmission line’s lightning performance and ensure its continuous operation. The study includes the assessment of the soil profile and a comparison of the findings obtained using the default and new earthing arrangement, both of which are intended to improve the tower footing resistance (TFR-during steady-state) and tower footing impedance (TFI-during lightning). Assessment of the TFR and TFI has been performed before and after the earthing design improvement. In addition, the impacts of these TFR and TFI, which are also defined as low and high-frequency earthing, respectively, relying on a specification of TFR and soil resistivity (SR) ranges at different locations have also been taken into consideration. The study was performed with the help of the SESCAD tool of Current Distribution Electromagnetic Field Grounding and Soil Structure Analysis program (CDEGS), as well as the PSCAD/EMTDC software, which was used for low and high frequency earthing, accordingly. Upon the completion of the investigation, the findings revealed that the modification to the earthing arrangement had a beneficial effect on lowering the TFR by 84.29 % and 88.34 % for Towers T41 and T42, respectively. While for TFI, the results revealed a significant decrease below the TFR during high frequency operation, which was attributed to soil ionization process that occur due to lightning. This was proved by the fact that the values were significantly below the TFR. All these enhancements are now being explored and evaluated across all of Malaysia’s 500 kV networks, where lightning is regarded to be the primary risk factor for power outages.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"36 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":"133942258","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
Positive Pre-breakdown Streamer Propagation and Breakdown Voltage of Palm Oil based Al2O3 棕榈油基Al2O3的正预击穿流光传播和击穿电压
2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181519
Y. V. Thien, N. Azis, N. A. Mohamad, X. J. Tan, Z. Yaakub
{"title":"Positive Pre-breakdown Streamer Propagation and Breakdown Voltage of Palm Oil based Al2O3","authors":"Y. V. Thien, N. Azis, N. A. Mohamad, X. J. Tan, Z. Yaakub","doi":"10.1109/APL57308.2023.10181519","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181519","url":null,"abstract":"This research paper presents the experimental results of the lightning pre-breakdown and breakdown voltages of Palm Oil (PO) and Mineral Oil (MO) in the presence of $Al_{2}O_{3}$ under positive voltage polarity. The experiments were conducted using a needle-plane electrode configuration as a non-uniform field. The positive lightning breakdown voltages of two types of refined, bleached, and deodorized PO with various concentrations of nanofluids were determined. The lightning pre-breakdown was monitored through light signal recordings. The light signal emission increased with the applied voltage for all samples. The presence of $Al_{2}O_{3}$ in both PO and MO increases the positive lightning breakdown voltages.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"87 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":"131999563","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
A Strong Positive CG Flash That Was Simultaneously Recorded by Multiple Observation Systems 由多个观测系统同时记录的强烈正CG闪光
2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181423
Junchen Yang, Daohong Wang, Haitao Huang, Ting Wu, N. Takagi, Kazuo Yamamoto
{"title":"A Strong Positive CG Flash That Was Simultaneously Recorded by Multiple Observation Systems","authors":"Junchen Yang, Daohong Wang, Haitao Huang, Ting Wu, N. Takagi, Kazuo Yamamoto","doi":"10.1109/APL57308.2023.10181423","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181423","url":null,"abstract":"We have documented a super positive lightning flash with DALMA (Discone Antenna Lightning Mapping Array), FALMA (Fast Antenna Lightning Mapping Array), InLMA (Interferometer-type of Lightning Mapping Array) as well as LAPOS (Lightning Attachment Process Observation System) and a high speed video camera. Using the documented data, we found this positive flash started with a downward negative leader from an upper negative charge region. The initial negative leader progressed into the lower positive charge region at an average speed of 1.0$times 10^{6}$ m/s and then was followed by many discharge activities in this region. These discharge activities consequently pumped positive charge to the negative leader initiation region and then produced a downward positive leader with a speed of 1.6× 106 m/s. This positive leader, accompanied by two steps, produced a positive return stroke with its peak current reaching to 268 kA. After the return stroke, a lot of discharge activities occurred between the upper negative charge and the lower positive charge regions. We estimated that the total electrical charge neutralized by this flash was over 1000 C. We also measured the speeds for the two step pulse discharges and the return stroke and found their speeds are 0.8$times10^{8} m/s, 0.82$× 108 m/s, and 1.15×108 m/s, respectively.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"17 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":"133087343","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
Cascade Protection Scheme for Wayside Signaling Surge Protection 道旁信号浪涌级联保护方案
2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181883
Lu Wen, C. Shaw, Spencer Teng
{"title":"Cascade Protection Scheme for Wayside Signaling Surge Protection","authors":"Lu Wen, C. Shaw, Spencer Teng","doi":"10.1109/APL57308.2023.10181883","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181883","url":null,"abstract":"Damage from lightning and transient over voltages cost railways millions per year. Exposure to the forces of lightning is unavoidable in the rail environment. To protect (and mitigate damage to) critical network equipment, an approach whereby surge protection devices (SPDs) cascade across electrical and electronic components that work in conjunction to provide greater protection and coverage is recommended. This paper will introduce an enhanced protection scheme through a Cascaded Surge Protection (CSP) system, which includes discussion on surge protection device specifications, recommendations for SPD selection and information on wayside signalling applications. The primary goal of the ‘cascaded protection scheme’ is to reduce the voltage experienced at the equipment to be protected during a transient event, by reducing the voltage at each SPD stage. Robust electronic equipment, like motors and switches, can sustain energy behind a first stage of protection whereas more sensitive electronics, like signalling and measuring devices, should be placed behind a second or even third stage of surge protection.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"39 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":"124843160","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
Development of Lightning Detection System Using Large-diameter Rogowski Coil and its Performance Evaluation Results 大直径Rogowski线圈雷电探测系统的研制及其性能评价结果
2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181542
Rikuto Tanaka, Kazuo Yamamoto
{"title":"Development of Lightning Detection System Using Large-diameter Rogowski Coil and its Performance Evaluation Results","authors":"Rikuto Tanaka, Kazuo Yamamoto","doi":"10.1109/APL57308.2023.10181542","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181542","url":null,"abstract":"A wind turbine installed in winter lightning areas is required to be equipped with a detection system that can accurately detect a lightning strike. The lighting detection systems using a large-diameter Rogowski coil with high measurement accuracy are widely used, but it is expensive and costs more than one million yen per unit. In this paper, we report the result of the frequency characteristic measurement of the self-made lightning detection system using a large-diameter Rogowski. The system is manufactured at a low cost, is cheaper than the currently popular large-diameter Rogowski coil type lightning detection system.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"47 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":"132131403","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
Study on Cable Coupling Effects of Lightning Strikes on a Metal Mast 金属桅杆雷击下电缆耦合效应研究
2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10182187
Haoshen Fan, Zhou Mi, Shengquan Zheng, Dongdong Wang, Xinrui Zuo, Cai Li, Jianguo Wang
{"title":"Study on Cable Coupling Effects of Lightning Strikes on a Metal Mast","authors":"Haoshen Fan, Zhou Mi, Shengquan Zheng, Dongdong Wang, Xinrui Zuo, Cai Li, Jianguo Wang","doi":"10.1109/APL57308.2023.10182187","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182187","url":null,"abstract":"Aiming at the problem of coupling response characteristics of internal cables when metal masts are struck by lightning, a lightning induction coupling test platform for the cable system inside the masts was built, and the induced voltage of coaxial cables, two-core single-shielded cables, and multi-core double-shielded cables were measured under four kinds of terminal load characteristics (open circuit at both ends of core wire, the end of the core wire near from the ground is connected to the load, the end of the core wire far from the ground is connected to the load and both ends of the core wire are connected to the load). From the perspective of time domain and frequency domain, the influence of load characteristics on induced voltage is analyzed. The results show that under the function of simulated lightning currents, the induced voltage of three cables all reaches the maximum value when the far-ground end of wire is grounded by load; the main frequency band of the induced voltage is greater than the lightning current when the near-ground terminal is grounded by load, while the two are similar under other load characteristics; grounding the inner shield can reduce the peak value of the induced voltage, its effect depends on the terminal load characteristics, but does not affect the main frequency band of the frequency response. This paper reveals the influence of terminal load characteristics on cable coupling induced voltage when lightning strikes the metal mast of a ship, and provides basic data support for the subsequent calculation of coupling effect.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"204 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":"132165069","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
Characteristics of Damages of Distribution Lines Due to Lightning in Hokuriku Area of Japan 日本北陆地区配电线路雷电破坏特征
2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10182083
Susumu Matsuura, K. Kanatani
{"title":"Characteristics of Damages of Distribution Lines Due to Lightning in Hokuriku Area of Japan","authors":"Susumu Matsuura, K. Kanatani","doi":"10.1109/APL57308.2023.10182083","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182083","url":null,"abstract":"In Hokuriku area of Japan, lightning occurs frequently not only in summer but also in winter. Winter lightning strikes have very large electric charge as compared with summer lightning strikes. For Example, surge arresters are sometimes damaged by direct lightning strikes, especially in winter. In order to prevent outages of distribution lines due to lightning, it is important to investigate lightning damages of distribution lines and consider lightning protection measures against them. In this paper, we present characteristics of damages of distribution lines due to lightning in Hokuriku area.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"177 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":"116872285","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
Characterization of lightning in the Lhasa region of Tibet 西藏拉萨地区闪电的特征
2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181783
T. Lei, Weidong Shi, Yang Zhang, Xia Zhao, Zixin Guo
{"title":"Characterization of lightning in the Lhasa region of Tibet","authors":"T. Lei, Weidong Shi, Yang Zhang, Xia Zhao, Zixin Guo","doi":"10.1109/APL57308.2023.10181783","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181783","url":null,"abstract":"This paper presents a statistical analysis of the macroscopic characteristics of lightning in the Lhasa area of Tibet, using the information collected by the ADTD lightning detection system at 50 km around Lhasa. A total of 1739 lightning returns were observed in 2012, of which 87.83% were negative. 71.4% of the negative lightning had only one return stroke, and 96.6% of the positive lightning had only one return stroke. Lightning activity in this region became frequent after the beginning of mid to late June, peaked in mid-July and then gradually decreased. During a day, lightning occurs mainly at night, with the number of flashes peaking around 21:00. The lightning current intensity of negative lightning is mainly distributed in the range of 10~20kA. The lightning current intensity of positive lightning is mainly distributed in the range of 30~40kA. High intensity lightning (greater than 50kA) occurs mainly in the range of 16:00~17:00.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"39 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":"115528252","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
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