2023 12th Asia-Pacific International Conference on Lightning (APL)最新文献_第9页

Performance Evaluations of Lightning Detection System for Wind Turbine 风电雷电探测系统性能评价

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181342

Kei Miyamoto, Kazuki Oobayashi, J. Suzuki, Kazuo Yamamoto, H. Kogo, Tomoya Tsuchida

引用次数: 0

Withstand capability of MOV and GDT parallel combination for excessive impulse currents MOV和GDT并联组合抗过大冲击电流的能力

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181327

Okuda Takashi, Tsukamoto Naoyuki

引用次数: 0

Lightning and Overhead Line Fault Analysis using Automated Fault Analysis Application On Transmission Line in Grid Division, TNB Malaysia 基于自动故障分析的输电线路雷电与架空线路故障分析，马来西亚TNB

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181461

Chung Yoke Wai, N. S. Hudi, Muhammad Shahmi Shokri, Ir. Noradlina Abdullah

{"title":"Lightning and Overhead Line Fault Analysis using Automated Fault Analysis Application On Transmission Line in Grid Division, TNB Malaysia","authors":"Chung Yoke Wai, N. S. Hudi, Muhammad Shahmi Shokri, Ir. Noradlina Abdullah","doi":"10.1109/APL57308.2023.10181461","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181461","url":null,"abstract":"A fault on overhead power lines can cause significant damage to the lines, resulting in outages and other disruptions. Detecting and diagnosing faults promptly is critical to minimize downtime and reduce the costs associated with repairs and maintenance on the transmission line assets. In this paper, we present a web-based automated fault analysis tool known as Automated Fault Analysis (AFA) jointly developed by Tenaga Nasional Berhad (TNB) Grid Division and TNB Research Center (TNBR). This system can automatically provide (1) fast and accurate fault location to assist in equipment restoration, (2) lightning and fault correlation analysis, and (3) relay and circuit breaker performance monitoring. The AFA automatic online analysis is made possible with intranet connection to digital fault recorders and digital protective relays utilizing substation RTAP gateway and TNB-owned fiber-optic network. For fault information enrichment, a Lightning Detection System, a Geographical Information System and CAPE™ Line Parameter Data were digitally integrated and are synchronized with GPS-system. AFA has been serving TNB-Grid for almost 2 years and the results are very encouraging with accurate fault location estimation and lightning and fault correlation analysis. This paper describes AFA lighting analysis module with practical engineer’s solution in mind and in-line with asset performance management system. Results of the current development and some near future enhancement including artificial intelligence using this fault analytic platform are shared","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"61 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":"124976503","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 Peat Moss Mixtures as Grounding Enhancement Materials 膨润土和泥炭苔藓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/APL57308.2023.10181741

W. F. Wan Ahmad, A. H. Abdul Rahman, J. Jasni, M. Ab-Kadir

{"title":"Performance of Bentonite and Peat Moss Mixtures as Grounding Enhancement Materials","authors":"W. F. Wan Ahmad, A. H. Abdul Rahman, J. Jasni, M. Ab-Kadir","doi":"10.1109/APL57308.2023.10181741","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181741","url":null,"abstract":"Grounding system is one of the lightning protection system that meant to provide protection for a power system, equipment in it and any personnel whom might accidently in touch with it, during both normal and fault conditions. It must with a low impedance path, ensuring all fault currents to be dispersed into earth at the shortest time possible. This could be achieved by treating grounding enhancement materials with the surrounding soil to reduce its earth resistance effectively. Grounding enhancement materials could be natural or chemical based, i.e. CEM and NEM, respectively. Only NEMs were considered in this study where four grounding systems were installed near to SGS, UPM with 100% Bentonite, 100% Peat Moss, Bentonite and Peat Moss Mix A, and Bentonite and Peat Moss Mix B. These NEM were mixed with water for their performances were compared to a Reference grounding system which is without any NEM added to the vicinity of the ground conductor. The performances of all installed grounding systems were evaluated by the percentage reductions of their measured earth resistance values against the Reference grounding system, with Fall-of-potential method, 62% rule and 0o separation angle were employed. The earth resistances were measured daily for 120 days, i.e. from 1st Feb 2019 to 1st Jun 2019 and it has been found that the best performed grounding system in descending order were 100% Bentonite, Bentonite and Peat Moss Mix A, 100% Peat Moss, Bentonite and Peat Moss Mix B, and Reference grounding systems. 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":"14 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":"114834697","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

Observation of Lightning Discharge Current in Kyushu in Japan 日本九州地区雷电放电电流观测

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181467

K. Michishita, Koji Takano, Takao Kawazoe, M. Ikuta, S. Yokoyama

引用次数: 0

Thunderstorm Prediction Model Using SMOTE Sampling and Machine Learning Approach 基于SMOTE采样和机器学习方法的雷暴预测模型

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10182046

Shirley Anak Rufus, N. A. Ahmad, Z. Abdul-Malek, N. Abdullah

{"title":"Thunderstorm Prediction Model Using SMOTE Sampling and Machine Learning Approach","authors":"Shirley Anak Rufus, N. A. Ahmad, Z. Abdul-Malek, N. Abdullah","doi":"10.1109/APL57308.2023.10182046","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182046","url":null,"abstract":"Thunderstorms are one of the most destructive phenomena worldwide and are primarily associated with lightning and heavy rain that cause human fatalities, urban floods, and crop damage. Therefore, predicting thunderstorms with reasonable accuracy is one of the crucial requirements for the planning and management of many applications, including agriculture, flood control, and air traffic control. This study extensively applied the historical lightning and meteorological data from 2011 to 2018 of the southern regions of Peninsular Malaysia to predict thunderstorm occurrence. Positive CG lightning rarely occurs compared to negative CG lightning and also due to the non-linear and complex characteristics of the thunderstorm and lightning itself, leading to an imbalance in the dataset. The resampling technique called SMOTE is introduced to overcome the imbalance of the training dataset. Then the dataset is trained and tested with five Machine Learning (ML) algorithms, including Decision Trees (DT), Adaptive Boosting (AdaBoost), Random Forest (RF), Extra Trees (ET), and Gradient Boosting (GB). The results have shown a good prediction with accuracy (74% to 95%), recall (72% to 93%), precision (76% to 97%), and F1-Score (74% to 95%) with SMOTE. The SMOTE and GB model prediction model is the best algorithm for thunderstorm prediction for this region in terms of performance metrics. In the future, the prediction results based on the lightning pattern and weather dataset will likely alert the related authorities to make an early strategy to handle the occurrence of thunderstorms.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"59 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":"114891907","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

Observation of the Space Leader During the Attachment Process in Positive Laboratory Sparks 空间引线在阳性实验室火花附着过程中的观察

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181495

Xiankang Wang, Xiaopeng Liu, Zijian Li, Yao Yao, Junjia He

引用次数: 0

Effects of Aerosols on lightning activity over the Himalayan Region 气溶胶对喜马拉雅地区闪电活动的影响

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10182045

Pradip Karki, Shriram Sharma, K. Poudyal, M. Gyawali, Sujan Neupane

{"title":"Effects of Aerosols on lightning activity over the Himalayan Region","authors":"Pradip Karki, Shriram Sharma, K. Poudyal, M. Gyawali, Sujan Neupane","doi":"10.1109/APL57308.2023.10182045","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182045","url":null,"abstract":"This study attempts to obtain the correlation between lightning activities and aerosol optical depth over the Himalayan and lesser Himalayan region. To investigate the association between Aerosol Optical Depth (AOD) with Lightning Stroke Density (LSD), the lightning stroke data were obtained from Vaisala’s Global Lightning Detection Network (GLD 360), and Aerosol Optical Depth (AOD) data were obtained from the Moderate Resolution Imaging Spectrometer (MODIS) Aqua satellites acquired between 2015 and 2020. We divided the geography of Nepal into three sections namely, Eastern (region 1), Central (region 2), and Western (region 3). It is observed that lightning is strongly and positively correlated with AOD loading, up to AOD ~ 0.75 for the eastern region; up to AOD ~ 0.70 for the middle region; and up to ~ 0.55 and for the western region; above these values the correlation weakens. Region 2 exhibits a much weak linear correlation (R=0.628) as compared to the other two regions (R=0.855 for region 1 and R=0.832 for region 3). The results indicate that moist aerosols have a better correlation to greater optical depth as compared to the drier aerosols over the Himalayan region. Lightning activity is strongly correlated with AOD for lower values but there is a negative correlation for the higher values of AOD.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"67 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":"134434480","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

Return-Stroke Field Close to the Channel with Finitely Conducting Earth 有限导电性大地条件下靠近通道的回冲程场

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181545

Rupam Pal, U. Kumar

{"title":"Return-Stroke Field Close to the Channel with Finitely Conducting Earth","authors":"Rupam Pal, U. Kumar","doi":"10.1109/APL57308.2023.10181545","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181545","url":null,"abstract":"The return-stroke field is one of the severest sources of natural EMI for electrical systems. The return-stroke field affects not only the electrical systems on the ground but also a flying aircraft or a device buried in the soil. Therefore, it becomes necessary to characterize the field. Measurement of return-stroke stroke field is a complicated and expensive exercise, and therefore, researchers often opt for theoretical modeling. In most investigations available in the literature, the field observations are restricted to a few meters above the ground, so the overall field structure in the air is not available. In this work, the spatio-temporal variation of the overall field structure (up to 1 km above the ground) close to the channel (< 1000 m) is investigated with a suitable return-stroke model in the presence of finitely conducting soil for flat ground and a mountain-like structure. A similar endeavor is hard to find in the literature and is expected to provide a valuable understanding of the field close to the channel. As most electrical and electronic devices are placed very close to the air-soil interface, a detailed analysis of the temporal variation of the field in the air close to the ground for different radial distances will also be presented.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"8 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":"133482707","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 Study of Power Outage Reduction Due to Lightning by Using the Different Dielectric Strength of Supporting Points of Distribution Lines 利用配电线路支撑点不同介电强度减少雷电致停电的研究

2023 12th Asia-Pacific International Conference on Lightning (APL) Pub Date : 2023-06-12 DOI: 10.1109/APL57308.2023.10181334

H. Honda, Takafumi Kuno, Yoshiyasu Koga

引用次数: 0