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

{"title":"Temporal and spatial distribution characteristics of lightning in the Yangtze River Delta of China from 2011 to 2019","authors":"Xiangyang Cheng, Kai Wang, Xiaoyu Ju","doi":"10.1109/APL57308.2023.10181627","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181627","url":null,"abstract":"Based on the data obtained by ADTD lightning location system of 27 stations in Jiangsu, Zhejiang and Anhui from 2011 to 2019, the lightning frequency and intensity in the Yangtze River Delta of China were statistically analyzed, the Delta referring to the integrated and coordinated development area of three provinces and one city (Jiangsu, Zhejiang, Anhui and Shanghai), and, the spatial distributions of lightning frequency were also compared by EOF.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"54 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":"126106333","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":"Comparative Analysis of Peak Current Prediction based on Random Forest and MLP Neural Network Algorithms","authors":"Priyanka Bhoyar, M. S. A. Rahman, S. Irfan, U. Amirulddin","doi":"10.1109/APL57308.2023.10181898","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181898","url":null,"abstract":"Lightning events have significant impacts on power systems, infrastructure, and the environment. Accurate and timely nowcasting of lightning occurrences is crucial for effective fault analysis and mitigation. This paper presents the development of a hybrid optimization-based deep learning model for lightning nowcasting, aiming to improve the accuracy and efficiency of lightning prediction. The objectives include the development of a deep learning model utilizing lightning data, spatial prediction of lightning events within a 1 km diameter, investigating the model’s capability for predicting specific time intervals and optimizing the computational cost and prediction accuracy. The proposed model demonstrates enhanced predictive capabilities and optimized computational efficiency, highlighting the potential of AI-driven techniques in lightning nowcasting and fault analysis applications.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"48 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":"115497319","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":"The Adoption of IEC 62305 Standards for Lightning Protection System in Malaysia: A Success Story","authors":"M. Kadir, S. C. Lim, J. Jasni, Chandima Gomes, Iffah Hannah Muluk","doi":"10.1109/APL57308.2023.10182127","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182127","url":null,"abstract":"This manuscript provides an overview of the adoption of the IEC 62305 standards for lightning protection systems (LPS) in Malaysia. It outlines the need for LPS in Malaysia by providing general lightning statistics, historical changes and adoption in LPS standards. For the first time, the manuscript explains the key reasons for the success of this transition of IEC 62305, which is now being regulated by the Energy Commission of Malaysia (EC). As the Regulator for energy and gas in Malaysia, EC has successfully transformed the standards into regulations by issuing the Directive paper in 2020, taking a big leap from its initial release as a Circular in 2011. Finally, it highlights the way forward in creating a culture of self-regulation among industrial players in Malaysia.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"20 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":"115547917","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":"Real-time Lightning 3D Imaging and Forecasting Project in Malaysia for Sustainable and Reliable Supply of Energy and Storm Disaster Early Warning","authors":"T. Morimoto, M. R. Ahmad, M. Z. Baharuddin, Daohong Wang, Kazuo Yamamoto, Takeshi Kudo, Ammar Nasser Al Kahtani, M. Aziz, M. Akita, Y. Takayanagi, Z. Kawasaki, Tatsuo Torii","doi":"10.1109/APL57308.2023.10182223","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182223","url":null,"abstract":"A joint research project “real-time lightning 3D imaging and forecasting project for sustainable and reliable supply of energy and storm disaster early warning” has been selected for Science and Technology Research Partnership for Sustainable Development (SATREPS) program. Held in the coastal area of the Straits of Malacca in Malaysia, which suffers from serious lightning disasters with more than 200 lightning days per year, this research aims to contribute to disaster prevention by forecasting lightning strikes by constructing the world’s highest lightning observation network. This research project is to conduct the field campaigns associated with artificial rocket-triggered lightning in the coastal area of the Straits of Malacca, where the thunderstorm activity is very high and there are many positive cloud-to-ground flashes that may damage electric, communication and other equipments. Measurements of radio waves in various frequency bands and high-energy radiations, and several Rogowski coils are set up surrounding the strike points. It is planned to realize an electromagnetic field observation network in VHF and LF bands to observe the entire progression of each lightning in detail in a wide area. 3D charge distribution in the thundercloud and the amounts of neutralized charges estimated from the information where the lightning discharge begins, how it progresses, and where it terminates. Then, it is examined by the lightning current waveform measured directly with the high structure and rocket-triggered lightning. By comprehensively grasping the charge behavior in the air related to lightning discharge, it is possible to estimate the charge distribution in the cloud and to predict lightning strike. In addition, promoting the control of electric power equipment using IoT, and the early warning system of severe weather disasters to be implemented in the society. This project further researches on active and adaptive lightning resistance and protection as well as artificial trigged lightning technique.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"64 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":"128670888","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":"Estimation of Stray Parameters in Lightning Impulse Voltage Generation Circuit","authors":"Pongsatorn Termtachatipongsa, P. Yutthagowith","doi":"10.1109/APL57308.2023.10182076","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182076","url":null,"abstract":"This paper presents a frequency domain method for estimating the stray circuit parameters of the lightning impulse voltage generator. In the first step for estimation of such circuit parameters, the lightning impulse voltage waveforms generated by the generator with a measuring system and without a test object are measured and recorded by a digital oscilloscope. Using the Fourier transform, signals are converted from the time domain to the frequency domain. Then, multiple linear regression is utilized to determine the stray series inductance, paralleled resistance, and paralleled capacitance. From the known stray circuit components and the load circuit parameters, the generator circuit components can be effectively adjusted with the help of a circuit simulator to obtain the waveform parameters as per the standard requirements. For the verification of the proposed method, some simulations and experiments were performed and compared. From the simulation results of the determination of the stray circuit parameters, the proposed method is fairly accurate, and the deviations are within 3%. Also, the simulation results agree well with the experimental ones.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"26 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":"130677577","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":"Performance of Active Electrical Earthing Systems: Background and Methodology","authors":"M. N. Hamzah, C. Gomes, M. Afiq, M. A. Ab. Kadir","doi":"10.1109/APL57308.2023.10182066","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182066","url":null,"abstract":"An effective earthing system with new earth resistance reducing agents (ERRA) and purpose-made electrode configuration has been discussed as Active Electrical Earthing System (AEES). This paper is a precursor of a research work that will be presented consequently. Conventional earthing systems pose undefeatable challenges in some instances due to the expansion of system loads, compactness of sites and environmental degradation of the earthing systems. The development of new and more sophisticated electrical systems requires earthing systems that are effective, durable and site-specific. In urban areas with high population density and also at sites of pathological landscapes (such as tower sites in mountain terrains, and lightning protection of urban buildings), the availability of large soil masses for effective earthing systems is a significant challenge. Rapid material degradation of earthing rods is a significant issue in corrosive atmospheres, where both air quality and soil composition may contribute to the aggressiveness of the surrounding electrode material. Thus, more robust, and site-effective earthing technologies that may mitigate these drawbacks, have a high demand on the market front at present. This paper discusses the existing systems and methodology for a new system.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"46 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":"125458588","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":"Characteristics of Winter Lightning Frequency in Wakasa Bay, Japan","authors":"Tomonobu Shibuya, F. Suzuki, Yuichi Takahashi, Yasushi Watarai","doi":"10.1109/APL57308.2023.10182031","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182031","url":null,"abstract":"Based on LIDEN (Lightning Detection Network System) data for four winters from 2017/18 to 2020/21, the distribution of lightning frequency was investigated in the Hokuriku to San’in regions including Wakasa Bay. The results showed that the density of lightning strikes was high along the coast of the Japan Sea from the western Noto Peninsula to the Echizen Coast and near Tsuruga, while the density was low in Wakasa Bay. Thus, we investigated typical cases in which lightning strikes were lower in Wakasa Bay than in the surrounding areas, especially around Mikuni area. The results showed that when thunderclouds approached Mikuni area, they tended to develop and form a stronger precipitation area than the surrounding, and the frequency of lightning strikes also increased. This suggests that the topography of the Mikuni area contributes to enhanced precipitation and lightning in this region. On the other hand, in the Wakasa Bay area, surface winds blowing into the Wakasa Bay from the surrounding land were frequently observed. Near Tsuruga on the east side of Wakasa Bay, the topography of the area makes the area near the ground a convergence field, and precipitation and lightning strikes are relatively strong. In contrast, the central to western part of Wakasa Bay tends to be a divergence field, which may contribute to the suppression of convection in this area. The relatively steep topography around Wakasa Bay may have contributed to the formation of this divergence field near the ground.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"1279 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":"116881035","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":"Overvoltage caused by switching operation - a threat to SPDs","authors":"R. Brocke, Christian Höhler","doi":"10.1109/APL57308.2023.10182016","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182016","url":null,"abstract":"Surge protective components (SPDs) are today an important component of overvoltage protection systems. Also, in the case of a lightning event, an uninterrupted and safe power supply is expected. The steadily increasing number of electronic devices and their growing sensitivity against overvoltages require surge protective devices (SPDs), which are able to guarantee the equipotentialisation in case of a lightning event as wel as an overvoltage protection in the case of switching operations. The low protection level may cause a huge number of possible operations of the SPD. The components used in modern SPDs stand out for their high capacity and simultaneously good protective properties. New challenges resulting from new installation requirements, like the increased application of inverters, fluctuating and restricted short-circuit capacity and more instable network conditions, require in future different and higher demands on SPDs.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"12 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":"116904102","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 on the Detection of Lightning Strikes on Wind Turbines with a Camera System","authors":"Fuma Mori, Kazuo Yamamoto","doi":"10.1109/APL57308.2023.10181977","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10181977","url":null,"abstract":"With the spread of wind power generation systems, there have been many reports of lightning damage to wind turbines. In particular, when a wind turbine is hit by winter lightning, incidents could lead to damages such as blade breakage. To prevent such damages, wind turbines in winter lightning areas in Japan are required to be equipped with a lightning detection system. This system allows wind turbines that have been struck by lightning to stop operation and restart after their integrity has been confirmed. However, in many cases, it is difficult to conduct inspections quickly, resulting in prolonged inspection times and reduced the availability. This paper reports the results of a study on a system that monitors wind turbines with camera system and detects the presence or absence of lightning strikes with higher accuracy.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"1 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":"129304542","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":"Relationship Between Laboratory Simulated Multicomponent Waveforms of the Lightning Current Pulse and Discharge Channel Light Intensity","authors":"Xinrui Zuo, Zhou Mi, Wang Dongdong, Zhao Weihan, Cai Li, W. Jiangguo","doi":"10.1109/APL57308.2023.10182134","DOIUrl":"https://doi.org/10.1109/APL57308.2023.10182134","url":null,"abstract":"Three categories of multi-component waveforms of lightning current, composed of three simulated return-stroke pulses and fifteen simulated M-component pulses along with the underlying background current, are generated by the ladder network formed by series connected inductor-and-capacitor elements. Two types of photodetectors, namely, a redlight sensitive one with a detection wavelength range of $200 sim 1000$ nm peaking at 600 nm, and a near-infrared sensitive one with a detection wavelength range of $400 sim 1000$ nm peaking at 800 nm, are used to record the luminosity of the discharge gap channel. Parameter correlations are analyzed between the simulated lightning multi-component current and the corresponding channel luminosity. Results show that the peak luminosity is linearly correlated with the peak current, and that there is also a linear relationship between the luminosity 10-90% rise time and current 10-90% rise time. Correspondingly, the resulting luminosity-time integral is linearly related to the current charge transfer. An important implication of this result is that the channel optical observation may well be suitable for the inversion of lightning current transfer charge. In general, however, compared to that from the red-sensitive photodetector, the luminosity waveform from the near-infrared sensitive photodetector is observed to better match the evolution trend of current, and this fact implies that it might allow for a more accurate estimation of the current transfer charge.","PeriodicalId":371726,"journal":{"name":"2023 12th Asia-Pacific International Conference on Lightning (APL)","volume":"1 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":"134272064","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}