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2011 7th Asia-Pacific International Conference on Lightning最新文献

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A method for suppressing steady-state operating overvoltages of the half wave-length UHV AC power transmission line 一种抑制半波长特高压交流输电线路稳态工作过电压的方法
2011 7th Asia-Pacific International Conference on Lightning Pub Date : 2011-12-22 DOI: 10.1109/APL.2011.6110187
Lingming Wang, X. Cui
{"title":"A method for suppressing steady-state operating overvoltages of the half wave-length UHV AC power transmission line","authors":"Lingming Wang, X. Cui","doi":"10.1109/APL.2011.6110187","DOIUrl":"https://doi.org/10.1109/APL.2011.6110187","url":null,"abstract":"This paper presents a method for suppressing steady-state operating overvoltages at the middle portion of the half wave-length transmission lines based on an unconventional AC transmission system that the half wave-length transmission line is divided into five segments with the different phase spacing and the different split distance. Then an analysis is made of the steady-state operation of a 1000kV–50Hz–3000km transmission system with uniform and nonuniform transmission lines. Simulation results showed that the steady-state operating overvoltages at the middle portion of the power transmission lines can be efficiently suppressed. This method is very convenient to be applied in countries where the transmission lines sites are very distant from the consumption regions.","PeriodicalId":105667,"journal":{"name":"2011 7th Asia-Pacific International Conference on Lightning","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115479450","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: 8
On the origin of two types of current pulses observed during the initial stage of upward lightning 论上行闪电初始阶段观测到的两类电流脉冲的来源
2011 7th Asia-Pacific International Conference on Lightning Pub Date : 2011-12-22 DOI: 10.1109/APL.2011.6110115
D. Flache, V. Rakov, F. Heidler, W. Zischank, R. Thottappillil
{"title":"On the origin of two types of current pulses observed during the initial stage of upward lightning","authors":"D. Flache, V. Rakov, F. Heidler, W. Zischank, R. Thottappillil","doi":"10.1109/APL.2011.6110115","DOIUrl":"https://doi.org/10.1109/APL.2011.6110115","url":null,"abstract":"We analyzed high-speed video images and corresponding current records for eight upward lightning flashes initiated by the Peissenberg tower (160 m) in Germany. These flashes contained a total of 33 measurable initial stage (IS) current pulses, which are superimposed on steady IS currents. Seven IS pulses had relatively short (< 8 μs) 10-to-90% risetimes and 26 IS pulses had relatively long (> 8 μs) risetimes. Six (86%) of seven IS current pulses with shorter risetimes each developed in a newly-illuminated branch, and 25 (96%) of 26 IS pulses with longer risetimes occurred in already luminous (current-carrying) channels. These results support the hypothesis that longer risetimes are indicative of the M-component mode of charge transfer to ground, while shorter risetimes are associated with the leader/return stroke mode. Similar results were obtained for M-component pulses that are superimposed on continuing currents following return-stroke pulses.","PeriodicalId":105667,"journal":{"name":"2011 7th Asia-Pacific International Conference on Lightning","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116975527","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
Unified bare bone particle swarm for economic dispatch with multiple fuel cost functions 具有多种燃料成本函数的统一裸骨粒子群经济调度
2011 7th Asia-Pacific International Conference on Lightning Pub Date : 2011-12-22 DOI: 10.1109/APL.2011.6111106
Chang-Huang Chen, J. Sheu
{"title":"Unified bare bone particle swarm for economic dispatch with multiple fuel cost functions","authors":"Chang-Huang Chen, J. Sheu","doi":"10.1109/APL.2011.6111106","DOIUrl":"https://doi.org/10.1109/APL.2011.6111106","url":null,"abstract":"Economic generating electric power is a very important issue for power utilities, especially in current state of fuel cost booming. In this paper, the unified bare bone particle swarm algorithm (UBPSO), which integrates local and global learning strategies, is proposed to solve economic dispatch problems with multiple fuel options. Tested on three systems with different number of units has verified that the proposed method can obtain better solution compared with other methods found in literature.","PeriodicalId":105667,"journal":{"name":"2011 7th Asia-Pacific International Conference on Lightning","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125035060","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: 4
Finite-difference analysis of the potential distribution around an L-shape building base under the measurement of grounding resistance 接地电阻测量下l型建筑物地基周围电位分布的有限差分分析
2011 7th Asia-Pacific International Conference on Lightning Pub Date : 2011-12-22 DOI: 10.1109/APL.2011.6110171
Jia-qing Chen, Wenchun Liao, Yingqiang Wang, Xiangyu Liu
{"title":"Finite-difference analysis of the potential distribution around an L-shape building base under the measurement of grounding resistance","authors":"Jia-qing Chen, Wenchun Liao, Yingqiang Wang, Xiangyu Liu","doi":"10.1109/APL.2011.6110171","DOIUrl":"https://doi.org/10.1109/APL.2011.6110171","url":null,"abstract":"For the first time, a three-dimensional finite difference method (3D FDM) is adopted to simulate the potential distribution during grounding resistance measurements around an L-shape building under different directions and electrodes arrangements. The results show that the distributions of zero potential region with different measurement points and measurement electrodes arrangements are strikingly different when using a straight-line-three-probes method. To obtain more accurate measurement results, scientific and suitable measurement point locations should be properly chosen for the grounding resistance measurement of L-shape buildings according to the surrounding conditions in practical measurements.","PeriodicalId":105667,"journal":{"name":"2011 7th Asia-Pacific International Conference on Lightning","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123300347","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
Improvised lightning safety awareness program 临时防雷安全意识项目
2011 7th Asia-Pacific International Conference on Lightning Pub Date : 2011-12-22 DOI: 10.1109/APL.2011.6110252
Z. Hartono, I. Robiah
{"title":"Improvised lightning safety awareness program","authors":"Z. Hartono, I. Robiah","doi":"10.1109/APL.2011.6110252","DOIUrl":"https://doi.org/10.1109/APL.2011.6110252","url":null,"abstract":"The number of media reported lightning fatalities in Malaysia averaged about a dozen annually in the late 1980s and early 1990s. In 1993, an improvised lightning safety awareness program was initiated through the Letters column of the local English news media in order to educate the public on the importance of seeking proper shelter before, during and after thunderstorms. A 10-point Lightning Safety Rule based on actual lightning fatalities was developed and published regularly from 2001 onwards. As more lightning safety messages appeared in the news media, the average number of reported annual fatalities declined towards the end of the decade. The success of the improvised program suggests that lightning hazards can be partially mitigated without a full scale national safety program.","PeriodicalId":105667,"journal":{"name":"2011 7th Asia-Pacific International Conference on Lightning","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125585975","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
Analysis of two-stage cascade SPD coordination under the impact of lightning combination wave in 220V low-voltage distribution system 220V低压配电系统雷电组合波影响下两级级防雷协调分析
2011 7th Asia-Pacific International Conference on Lightning Pub Date : 2011-12-22 DOI: 10.1109/APL.2011.6110138
Shen Chen, Lei Shen
{"title":"Analysis of two-stage cascade SPD coordination under the impact of lightning combination wave in 220V low-voltage distribution system","authors":"Shen Chen, Lei Shen","doi":"10.1109/APL.2011.6110138","DOIUrl":"https://doi.org/10.1109/APL.2011.6110138","url":null,"abstract":"Lightning surge is one major source that causes failure of power electronic equipments in low-voltage power distribution systems, especially for the equipments with low immunity parameters and high sensitivity to surge. Surge protection device (SPD) is the primary means of surge protection in low-voltage power distribution systems, in this paper, based on the work done before, in use of simulation methods, the protective effect about nine kinds of two-stage cascade SPD is analyzed in low-voltage power distribution systems under the impact of lightning. Finally, in order to protect the power electronic equipments economically and safely, several principles about how to choose SPD coordination are proposed under the circumstances of different length of cable and different type of load.","PeriodicalId":105667,"journal":{"name":"2011 7th Asia-Pacific International Conference on Lightning","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114487844","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: 3
Frequency of upward lightning from tall structures in winter in Japan 日本冬季高层建筑向上闪电的频率
2011 7th Asia-Pacific International Conference on Lightning Pub Date : 2011-12-22 DOI: 10.1109/APL.2011.6111049
M. Ishii, M. Saito, F. Fujii, M. Matsui, D. Natsuno
{"title":"Frequency of upward lightning from tall structures in winter in Japan","authors":"M. Ishii, M. Saito, F. Fujii, M. Matsui, D. Natsuno","doi":"10.1109/APL.2011.6111049","DOIUrl":"https://doi.org/10.1109/APL.2011.6111049","url":null,"abstract":"In Japan, transmission lines or wind turbines in the coastal area of the Sea of Japan have suffered from higher frequencies of serious troubles by lightning in winter than those in summer. The thunderstorm days in this area are comparable in winter to those of summer; however, the number of lightning strokes observed by lightning location systems (LLS) in winter is much smaller. In winter, concentration of lightning hits to tall structures is observed by LLS in the coastal area of the Sea of Japan. Out of the observation by LLS, the authors propose an experimental formula to estimate the frequency of upward lightning occurring on tall structures in winter in Japan.","PeriodicalId":105667,"journal":{"name":"2011 7th Asia-Pacific International Conference on Lightning","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128575569","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: 10
Electromagnetic analysis for lightning propagation in lossy soil by using FDTD 用时域有限差分法分析雷电在含沙土壤中的传播
2011 7th Asia-Pacific International Conference on Lightning Pub Date : 2011-12-22 DOI: 10.1109/APL.2011.6111075
T. Tang, Xiu-bin Sun, Kun Liu, Zaihua Guo, Dingjun Chen
{"title":"Electromagnetic analysis for lightning propagation in lossy soil by using FDTD","authors":"T. Tang, Xiu-bin Sun, Kun Liu, Zaihua Guo, Dingjun Chen","doi":"10.1109/APL.2011.6111075","DOIUrl":"https://doi.org/10.1109/APL.2011.6111075","url":null,"abstract":"When the lightning electromagnetic pulse (LEMP) injected into the loss soil by earth electrodes, due to the strong electric field carried by the lightning, the soil ionization may occur. The ionization phenomena will not only affect the distribution of the LEMP, but also affect the soil properties, such as conductivity. Based on finite difference time domain (FDTD) method, the non linear effects of soil ionization under different parameters of LEMP and the soil properties is investigated. Results show the distribution and attenuation of LEMP. The evolution of the soil properties is discussed also.","PeriodicalId":105667,"journal":{"name":"2011 7th Asia-Pacific International Conference on Lightning","volume":"102 2 Pt 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130342312","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 of a new Jet Stream Interrupter Gap Lightning Protection Device 一种新型射流断流缝隙防雷装置的研究
2011 7th Asia-Pacific International Conference on Lightning Pub Date : 2011-12-22 DOI: 10.1109/APL.2011.6110124
Jufeng Wang, Mengni Long
{"title":"Study of a new Jet Stream Interrupter Gap Lightning Protection Device","authors":"Jufeng Wang, Mengni Long","doi":"10.1109/APL.2011.6110124","DOIUrl":"https://doi.org/10.1109/APL.2011.6110124","url":null,"abstract":"To avoid the overhead transmission lines suffering from the harm of lighting, a new type of Jet Stream Interrupter Gap Lightning Protection Device (JSGLPD) has been developed and applied, which is applied on 10Kv and 35Kv transmission lines. Improved mayr arc model is formulated to simulate the arc extinguishing capacity of by JSGLPD, when the arc is produced by Grounding short-circuit current. The velocity and working scope of jet stream is calculated with Two-dimensional N-S equation and k-ε turbulence model to get the losing coefficient of arc model, and the time coefficient is obtained though arc extinguishing experiment. Compared the simulation with waveform from oscillograph and the picture from high-speed camera in the low current arc extinguishing experiment, good agreement is found. So both the simulation and the experiment show the arc can be strongly and rapidly extinguished by JSGLPD.","PeriodicalId":105667,"journal":{"name":"2011 7th Asia-Pacific International Conference on Lightning","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126786888","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: 1
Analysis of personal safety and lightning protection in straddle-type monorail transportation 跨座式单轨交通人身安全与防雷分析
2011 7th Asia-Pacific International Conference on Lightning Pub Date : 2011-12-22 DOI: 10.1109/APL.2011.6111070
Qin Binquan, Xiang Mi, Ren Yan, L. Liangfu
{"title":"Analysis of personal safety and lightning protection in straddle-type monorail transportation","authors":"Qin Binquan, Xiang Mi, Ren Yan, L. Liangfu","doi":"10.1109/APL.2011.6111070","DOIUrl":"https://doi.org/10.1109/APL.2011.6111070","url":null,"abstract":"In allusion to the security of people in a straddle-type monorail vehicle when the straddle-type monorail vehicle is struck by lightning, this article carries out calculation and analysis of two cases, i.e. people in the vehicle are not in contact with the metallic components which directly connecting the metallic housing of the vehicle, and people are in contact with the metallic components which directly connecting the metallic housing of the vehicle and concludes that in the former case, people are completely safe; and in the latter case, people will feel tingle or causalgia, but do not threaten the safe of life.","PeriodicalId":105667,"journal":{"name":"2011 7th Asia-Pacific International Conference on Lightning","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129294630","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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