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

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Simulation and Analysis of Surge Protection for Wind Turbines Based on ATP-EMTP 基于ATP-EMTP的风力发电机浪涌保护仿真与分析
Pub Date : 2022-10-02 DOI: 10.1109/ICLP56858.2022.9942639
Zewei Zhu, Mai Jiang, V. Crevenat
Surge caused by lightning strike on the blades will impact the low voltage power system of the wind turbines. Traditional voltage-limiting surge protection device (SPD) fails to satisfy the environment of repetitive transients frequently caused by unstable pulse width modulation (PWM) of power supply and long cable effects. High peak value and steep rise time (du/dt) will greatly shorten the lifetime of voltage-limiting SPD as the maximum continuous operating voltage $(mathrm{U}_{mathrm{c}})$ is normally lower. Therefore, this paper presents a way for such SPD to realize fine protection and higher withstand capacity under repetitive transients, which are verified by simulation based on the ATP-EMTP.
雷击叶片产生的浪涌会对风机低压电力系统造成冲击。传统的限压浪涌保护装置(SPD)不能满足由于电源脉宽调制(PWM)不稳定和长电缆效应导致的频繁重复瞬变的环境。由于最大连续工作电压$(mathrm{U}_{mathrm{c}})$通常较低,峰值高、上升时间陡会大大缩短限压SPD的寿命。因此,本文提出了一种使该防雷器在重复瞬变下实现良好保护和更高承受能力的方法,并通过基于ATP-EMTP的仿真验证了这一点。
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引用次数: 1
Dynamic lightning protection of smart grid considering charging and discharging of electric vehicles 考虑电动汽车充放电的智能电网动态防雷
Pub Date : 2022-10-02 DOI: 10.1109/ICLP56858.2022.9942581
Yi Hong, C. Tong, Xia Hua, Jiahuan Feng, Zhihao Fang, Jinwen Mai, Xujiang Shi, Yang Xu, Yuetao Wu
In recent years, global lightning activities have become more frequent and violent, seriously endangering the security of smart grids. With the global demand for clean energy and electric vehicles increasing year by year, the integrated wind-solar-storage electric vehicle charging station, as a typical flexible resource complex, can play a positive role in the smart grid's ability to resist lightning disasters. This paper proposes a smart grid dynamic lightning protection considering the charging and discharging of electric vehicles. This mode is based on the lightning detection and early warning technology of Dynamic Lightning Protection. Before the occurrence of lightning, the energy storage system and electric vehicles in the charging station will be charged, and the power supply capacity of the charging station will be estimated to match the corresponding number of important loads. When a lightning strike occurs, the smart grid power lines are reconfigured through disconnect switches. Based on the charging and discharging technology of electric vehicles, it can make full use of the clean energy provided by the charging station to supply important loads, and minimize the mismatched power between the power generation and the electricity consumption of the isolated smart grid where the charging station is located. The simulation results show that this mode can not only improve the reliability of power supply of the smart grid, but also promote the consumption of clean energy. At the same time, some diesel generators can be replaced, thereby reducing carbon emissions.
近年来,全球雷电活动日益频繁和猛烈,严重危及智能电网的安全。随着全球对清洁能源和电动汽车需求的逐年增加,风能-太阳能-储能一体化电动汽车充电站作为典型的柔性资源综合体,可以在智能电网抵御雷击灾害能力方面发挥积极作用。提出了一种考虑电动汽车充放电的智能电网动态防雷方案。该模式基于动态防雷的雷电探测预警技术。雷电发生前,对充电站内的储能系统和电动汽车进行充电,并预估充电站的供电能力与相应数量的重要负载相匹配。当雷击发生时,智能电网电力线通过断开开关重新配置。基于电动汽车充放电技术,可以充分利用充电站提供的清洁能源供给重要负荷,最大限度地减少充电站所在孤立智能电网的发电与用电量不匹配。仿真结果表明,该模式不仅可以提高智能电网供电的可靠性,还可以促进清洁能源的使用。同时,可以更换部分柴油发电机,从而减少碳排放。
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引用次数: 0
The Epidemiology of Lightning in Mainland China - A Review of Two Datasets from the 1950s to 2018 中国大陆闪电的流行病学——对20世纪50年代至2018年两个数据集的回顾
Pub Date : 2022-10-02 DOI: 10.1109/ICLP56858.2022.9942574
Daile Zhang, R. Holle
Lightning is among the top storm-related fatality and injury hazards in mainland China. This study shows the lightning fatalities and injuries in mainland China from the $boldsymbol{1950}mathbf{s}$ to 2018 based on two publicly available datasets. Although there is inconsistency in both datasets, they still provide a valuable set of information to help us understand the history of lightning fatality and inj uries in mainland China that can used to provide guidance for future lightning safety education.
闪电是中国大陆与风暴相关的最大伤亡危险之一。本研究基于两个公开数据集,展示了从$boldsymbol{1950}mathbf{s}$到2018年中国大陆的雷击伤亡情况。虽然两组数据不一致,但它们仍然提供了一组有价值的信息,帮助我们了解中国大陆雷击死亡和伤害的历史,可以用来为未来的雷击安全教育提供指导。
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引用次数: 0
Comparison of the Analytical Simplified Method of the OHL Lightning Performance Assessment with Monte Carlo Method in ATP-EMTP using Line Lightning Protection Devices 采用线路防雷装置的ATP-EMTP中OHL防雷性能分析简化法与蒙特卡罗法的比较
Pub Date : 2022-10-02 DOI: 10.1109/ICLP56858.2022.9942625
D. Belko, Nikolay Zaretskiy
The paper describes a continuation of the study of the Analytical Simplified Method of the OHL lightning performance assessment. The authors focused on the comparison the probability of back flashover of insulation, obtained by the proposed analytical simplified method, implemented in the Groza software, with the calculation in ATP-EMTP calculating the probability of back flashover using the Monte Carlo method. 35 and 110 kV overhead lines have been taken as objects of comparison for verification. The influence of the tower footing resistance, tower height, the presence of the overhead ground wire on the probability of the back flashover of all three phases of the OHL are considered.
本文是对分析简化法在OHL雷电性能评估中的继续研究。重点比较了在Groza软件中实现的分析简化方法得到的绝缘反闪概率与用蒙特卡罗方法计算反闪概率的ATP-EMTP中的计算结果。以35和110千伏架空线为对比对象进行验证。考虑了塔基电阻、塔架高度、架空接地线的存在等因素对直流直流电源三相反闪络概率的影响。
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引用次数: 1
Drone- Triggered Lightning: The Concept and Results of Initial Laboratory Testing 无人机触发闪电:概念和初步实验室测试的结果
Pub Date : 2022-10-02 DOI: 10.1109/ICLP56858.2022.9942459
N. Parus, Chandima Gomes
This paper presents an overview of the novel idea of using drones (remotely piloted aircraft systems or unmanned aerial vehicles) for triggered and other related lightning research. In addition., it discusses the practical and technical issues considered for this research., the results of small-scale laboratory testing., and finally., the requirements of South Africa's drone regulations to allow such flights. Initial results show that, at a small scale., a commercially available drone encircled with a suitable Faraday cage., can withstand a current impulse of approximately 16 kA and a voltage impulse greater than 300 kV., without experiencing any electrical telemetry problems., flight instability or control interference.
本文概述了使用无人机(遥控飞机系统或无人驾驶飞行器)进行触发和其他相关闪电研究的新想法。此外。,讨论了本研究所考虑的实际和技术问题。,小规模实验室测试的结果。,最后。南非无人机法规要求允许此类飞行。初步结果表明,在小范围内。这是一种商用无人机,周围有一个合适的法拉第笼。,可承受约16ka的电流冲击和大于300kv的电压冲击。,没有遇到任何电遥测问题。飞行不稳定或控制干扰。
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引用次数: 0
Silver-based conductive materials for lightning strike protection of aircraft composite structures 飞机复合结构防雷用银基导电材料
Pub Date : 2022-10-02 DOI: 10.1109/ICLP56858.2022.9942506
Anamaria Serbescu, D. Brassard, J. Langot, Etienne Gourcerol, K. Chizari, Maxime Lapalme, Alexandra Desautels, F. Sirois, D. Therriault
Lightning strike protection of composite structures, is an increasingly studied subject in the aerospace industry. The important weight savings offered by composite structures are hindered by their lower electrical conductivity, as much as four orders of magnitude, compared to their aluminium alloy coun-terparts. Commercially available metallic expanded foils such as expanded copper foils (ECF) offer good protection at the cost of difficult reparability and significant weight penalty, thus negating the weight benefits that composites can bring. Here we study a wet-metallization process with Tollen's reagent to plate milled carbon fibres with silver. The silver coated carbon fibres (SCCF) are integrated to a carbon fibre reinforced polymer (CFRP) panel with different adhesives under three configurations, then the panels are sealed with aerospace grade paint for realistic finition and are subjected to high impulse strikes. The aim of the SCCF sacrificial coating, layered upon the CFRP panel, is to effectively mitigate damage due to lightning strike and to offer a scalable and viable LSP solution. Configuration DPE-SCCF (Painted Double stacked PEDOT:PSS and SCCF) had 54% retention of flexural strength in bending and an area of damage of 314 squared millimeters. Moreover, configuration PE-SCCF (Painted PEDOT:PSS and SCCF) being two times less areally dense than the former, had 42% retention of flexural strength in bending with an area of damage of 1550 squared millimeters, 5 times more than the DPE-SCCF configuration. Finally, configuration PR-SCCF (Painted Primer and SCCF) had an area of damage of 777 squared millimeters. All three configurations displayed delamination in the first two plies. Both configurations PE-SCCF and DPE-SCCF performed better than P-CFRP (Painted unprotected CFRP panels) in retained mechanical properties but displayed inferior retention of mechanical properties compared to P-ECF (Painted Expanded Copper Foil).
复合材料结构的雷击防护,是航空航天工业中日益研究的课题。复合材料结构提供的重要重量减轻受到其电导率较低的阻碍,与铝合金相比,其电导率高达四个数量级。商业上可用的金属膨胀箔,如膨胀铜箔(ECF)提供了良好的保护,但代价是难以修复和显著的重量损失,从而抵消了复合材料带来的重量优势。本文研究了托伦试剂湿金属化法在碳纤维上镀银的工艺。镀银碳纤维(SCCF)在三种配置下与不同粘合剂的碳纤维增强聚合物(CFRP)板集成,然后用航空级涂料密封板,以满足实际限制并承受高脉冲冲击。SCCF牺牲涂层分层在CFRP面板上,目的是有效减轻雷击造成的损害,并提供可扩展和可行的LSP解决方案。DPE-SCCF(涂双堆叠PEDOT:PSS和SCCF)在弯曲时具有54%的抗弯强度保留,损伤面积为314平方毫米。此外,配置PE-SCCF(涂有PEDOT:PSS和SCCF)的面密度比前者低两倍,在弯曲时具有42%的抗弯强度保留,损伤面积为1550平方毫米,是DPE-SCCF配置的5倍。最后,配置PR-SCCF(涂漆底漆和SCCF)的损伤面积为777平方毫米。在前两层中,所有三种配置都显示分层。PE-SCCF和DPE-SCCF两种配置在保留机械性能方面都优于P-CFRP(涂覆无保护的CFRP板),但与P-ECF(涂覆膨胀铜箔)相比,其机械性能的保留性能较差。
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引用次数: 0
Method for detection and identification of lightning strokes likely to cause wildfires 可能引起野火的雷击探测和识别方法
Pub Date : 2022-10-02 DOI: 10.1109/ICLP56858.2022.9942469
Gavin Strelec, A. Kunneke, Frans Jooste
Lightning and wildfires are natural phenomena prevalent in the Southern African sub-continent. The endemic vegetation evolved to survive these fires. In the past, lightning was the most common trigger of fires, but currently anthropogenic causes account for most fires in occupied areas. Despite this, lightning remains critical, as fires in remote and uninhabited locations are mostly initiated by lightning. These fires have both a significant ecological and socioeconomic impact, as such fires are typically detected at an advanced stage. These fires are difficult to extinguish due to rugged terrain and low accessibility, resulting in large burnt areas. The detection, location and prediction of lightning strokes that are probable to ignite fires is important to protect lives, property as well as ecologically sensitive areas. This process is illustrated by various recent case studies. Of particular concern are smouldering underground fires that are ignited by lightning and may result in fires that occur days, or even weeks later after the initiation event. Methods for detecting and extinguishing these fires have been devised. More than 90% of fires, are started by strokes of positive polarity. Conversely, around 90% of cloud-to-ground strokes are of negative polarity, therefore positive strokes are the focus of the detection process and result in a relatively small analysis set. Lightning stoke data can be combined with satellite detection of vegetation hydration levels to objectively quantify the risk of wildfires. The aim of this research is to provide early detection and location of lightning strokes that are associated with a high probability of causing wildfires. Here, the technique is introduced with limited data as a discussion paper and is being developed and verified with additional data in ongoing further work.
闪电和野火是非洲南部次大陆普遍存在的自然现象。当地特有的植被在这些火灾中幸存下来。在过去,闪电是引发火灾最常见的原因,但目前在被占领地区,人为原因占了大多数火灾的原因。尽管如此,闪电仍然至关重要,因为在偏远和无人居住的地方,火灾大多是由闪电引起的。这些火灾具有重大的生态和社会经济影响,因为此类火灾通常在后期被发现。由于地形崎岖,不易接近,这些火灾难以扑灭,导致大面积燃烧。探测、定位和预测可能引发火灾的雷击,对保护生命、财产和生态敏感地区非常重要。最近的各种案例研究说明了这一过程。特别值得关注的是由闪电点燃的阴燃地下火灾,这些火灾可能在引发事件后几天甚至几周发生火灾。已经设计出了探测和扑灭这些火灾的方法。90%以上的火灾都是由正极的电击引起的。相反,大约90%的云对地冲程是负极性,因此正冲程是检测过程的重点,并导致相对较小的分析集。雷击数据可以与植被水化水平的卫星检测相结合,以客观地量化野火的风险。这项研究的目的是提供雷击的早期检测和定位,这些雷击与引起野火的高概率有关。在这里,以有限的数据作为讨论文件介绍了该技术,并在正在进行的进一步工作中使用额外的数据进行开发和验证。
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引用次数: 0
Characterization of Energized Transmission Line Towers Grounding: an approach in time and frequency domains 输电线塔接地特性的时域和频域分析
Pub Date : 2022-10-02 DOI: 10.1109/ICLP56858.2022.9942543
A. B. Amaral, C. Caetano, J. Paulino, Marco Aurélio de Oliveira Schroeder
This paper presents an experimental and theoretical study to characterize the grounding system of transmission line towers. The effects of frequency-dependent ground parameters and interconnection with neighboring transmission line towers are considered. The measured data are evaluated in the time and frequency domains. A criterion is proposed for the robust characterization of the local grounding system (i.e., the grounding of the tower under measurement) and the interconnection system. Measurements were performed on a real grounding system to validate the proposed criterion.
本文对输电铁塔接地系统的特性进行了实验和理论研究。考虑了频率相关的地面参数和与邻近输电线路塔的互连的影响。对测量数据进行时域和频域评估。提出了局部接地系统(即被测塔的接地)和互联系统鲁棒性特征的判据。在一个真实的接地系统上进行了测量,以验证所提出的准则。
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引用次数: 0
Analysis of Monthly Lightning Distribution in Nigeria 尼日利亚闪电月分布分析
Pub Date : 2022-10-02 DOI: 10.1109/ICLP56858.2022.9942572
Chinemere E. Anyiam, M. Omidiora, Samuel A. Isaac, R. Holle
This is the first time in the literature that lightning distribution maps for Nigeria will be published, particularly on a monthly basis. A lightning dataset from the Global Lightning Dataset GLD360 network was analyzed for Nigeria from 2015 to 2021. The dataset contains over 123 million strokes, that occurred in Nigeria. Vaisala owns GLD360, which can properly detect the majority of lightning discharges throughout the world. The lightning variability on a monthly scale was first addressed for all 36 states and Federal Capital Territory in Nigeria. The monthly lightning stroke densities and occurrences for each state were an-alyzed to show the lightning-prone areas in the country. Analysis of the lightning dataset was performed with Python programming language and ArcGIS. It is expected that knowledge of lightning variability in Nigeria will help understanding of the weather conditions responsible for the lightning occurrence, the effect of lightning on power reliability, help locate severe weather, and when to safely have outdoor events in the country.
这是文献中第一次发布尼日利亚的闪电分布图,特别是每月发布一次。我们分析了2015年至2021年尼日利亚全球闪电数据集GLD360网络的闪电数据集。该数据集包含超过1.23亿笔划,这些笔划发生在尼日利亚。维萨拉拥有GLD360,可以正确检测世界上大多数的闪电放电。首先对尼日利亚所有36个州和联邦首都直辖区的闪电月变率进行了研究。对每个州的月雷击密度和发生率进行了分析,以显示该国的雷击易发地区。利用Python编程语言和ArcGIS对雷电数据集进行分析。预计对尼日利亚闪电变化的了解将有助于了解导致闪电发生的天气条件,闪电对电力可靠性的影响,帮助确定恶劣天气的位置,以及在该国安全举办户外活动的时间。
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引用次数: 0
Preliminary studies on the distribution of lightning current in the components of PV modules 光伏组件组件内雷电电流分布的初步研究
Pub Date : 2022-10-02 DOI: 10.1109/ICLP56858.2022.9942591
H. E. Sueta, J. Modena, José O. Barbosa, S. Santos, R. Zilles
This paper presents tests in photovoltaic module assembly whose objective is to verify the behavior of the connections of its components when conducting portion of the lightning current. The tests conducted on the arrangements showed that for the direct current pulses, simulating continuing currents, they did not damage the connections or the modules used.
本文介绍了在光伏组件组件中进行的测试,其目的是验证其组件在导通部分雷击电流时的连接行为。对这些装置进行的测试表明,对于模拟持续电流的直流脉冲,它们不会损坏所使用的连接或模块。
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引用次数: 0
期刊
2022 36th International Conference on Lightning Protection (ICLP)
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