2011 International Symposium on Lightning Protection最新文献_第5页

New lightning current arrester design for onshore and offshore wind turbines 陆上和海上风力涡轮机的新型避雷器设计

2011 International Symposium on Lightning Protection Pub Date : 2011-12-01 DOI: 10.1109/SIPDA.2011.6088447

H. Heckler, Joachim Wosgien, M. Wetter

引用次数: 3

Verifications of transient grounding impedance measurements of a wind turbine generator system using the FDTD method 用时域有限差分法测量风力发电系统暂态接地阻抗的验证

2011 International Symposium on Lightning Protection Pub Date : 2011-12-01 DOI: 10.1109/SIPDA.2011.6088414

K. Yamamoto, S. Yanagawa, T. Ueda

引用次数: 7

Using total lightning data in severe storm prediction: Global case study analysis from north America, Brazil and Australia 在强风暴预测中使用总闪电数据:来自北美、巴西和澳大利亚的全球案例研究分析

2011 International Symposium on Lightning Protection Pub Date : 2011-12-01 DOI: 10.1109/SIPDA.2011.6088433

Chonglin Liu, S. Heckman

{"title":"Using total lightning data in severe storm prediction: Global case study analysis from north America, Brazil and Australia","authors":"Chonglin Liu, S. Heckman","doi":"10.1109/SIPDA.2011.6088433","DOIUrl":"https://doi.org/10.1109/SIPDA.2011.6088433","url":null,"abstract":"Intracloud (IC) lightning is better correlated to storm severity than cloud-to-ground (CG) lightning. The detection of both IC and CG flashes, or total lightning, enables improvements in the lead time of severe weather prediction and alerting. The Earth Networks WeatherBug Total Lightning Network (WTLN), created specifically for the detection of both IC and CG lightning strokes, covers the contiguous United States, Alaska, Hawaii and the Caribbean, as well as Australia and Brazil with a high density of sensors. Other areas are covered by a global low-density network for CG detection only. The properties of lightning cells preceding numerous severe storms in various locations of the contiguous United States have been studied and certain predictive patterns in the lightning cells have been identified. The time evolution of the lightning flash rate and the IC/CG ratio of individual cells are used to identify thunderstorms likely to produce damaging hail, high wind, or tornados with significant lead times before they occur. Studies have shown that early detections in the sudden rise of the rate of IC discharges and subsequent peak of total flash rate can serve as an indicator for severe storm conditions. Using WTLN lightning data, a real-time lightning cell tracking and the Earth Networks Dangerous Thunderstorm Alert (WDTA) program has been developed.","PeriodicalId":277573,"journal":{"name":"2011 International Symposium on Lightning Protection","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126937946","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: 14

Current waveforms associated with positive flashes recorded on the säntis tower in summer 2010 2010年夏天在säntis塔上记录的与正闪光相关的电流波形

2011 International Symposium on Lightning Protection Pub Date : 2011-12-01 DOI: 10.1109/SIPDA.2011.6088457

C. Romero, M. Paolone, F. Rachidi, M. Rubinstein, V. Rakov, A. Rubinstein, C. Nucci, P. Zweiacker

{"title":"Current waveforms associated with positive flashes recorded on the säntis tower in summer 2010","authors":"C. Romero, M. Paolone, F. Rachidi, M. Rubinstein, V. Rakov, A. Rubinstein, C. Nucci, P. Zweiacker","doi":"10.1109/SIPDA.2011.6088457","DOIUrl":"https://doi.org/10.1109/SIPDA.2011.6088457","url":null,"abstract":"We present in this paper measured current waveforms associated with positive flashes recorded on the Säntis tower, Switzerland, in Summer 2010. About 20% of the recorded flashes were of positive polarity (transported positive charge to ground), all of them being recorded in July and August. This percentage is considerably larger than the values observed in other studies in summer months (3% to 6.5%). The observed current waveforms can be classified into two types. The first type is characterized by three stages: (1) an initial, slowly rising portion lasting a few milliseconds, (2) the main pulse, and (3) a long continuing current that may contain several pulses of both polarities characteristic of M components. The second type of observed positive flashes is characterized by (i) the absence of any initial slowly rising portion, (ii) lower peak currents, and (iii) presence of successive pulses which may be due to an upward stepped leader. The time-derivatives of the current pulses associated with upward stepped leaders are found to be much larger than those of the main pulse. All the observed flashes contained a single main pulse, except for one flash of the second type, which featured two pulses. Our recorded data constitute the first directly-measured evidence of M-components of both polarities during a continuing current lowering positive charge to ground.","PeriodicalId":277573,"journal":{"name":"2011 International Symposium on Lightning Protection","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114976016","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: 6

Insulation coordination of a wind turbine and a power distribution line 风电机组与配电线路的绝缘协调

2011 International Symposium on Lightning Protection Pub Date : 2011-12-01 DOI: 10.1109/SIPDA.2011.6088430

S. Sekioka, J. Takami, S. Okabe

引用次数: 6

Are subsequent strokes relevant to transmission lines lightning-related outages? 随后的雷击是否与输电线路雷击相关的停电有关?

2011 International Symposium on Lightning Protection Pub Date : 2011-12-01 DOI: 10.1109/SIPDA.2011.6088461

F. H. Silveira, S. Visacro, A. De Conti

引用次数: 0

Close electric field changes associated with upward-initiated lightning at the Gaisberg Tower 盖斯伯格塔上与向上发起的闪电有关的闭合电场变化

2011 International Symposium on Lightning Protection Pub Date : 2011-12-01 DOI: 10.1109/SIPDA.2011.6088458

Helin Zhou, G. Diendorfer, R. Thottappillil, H. Pichler, M. Mair

引用次数: 5

Horizontal electric field at the surface of layered earth due to lightning 层状大地表面因闪电引起的水平电场

2011 International Symposium on Lightning Protection Pub Date : 2011-12-01 DOI: 10.1109/SIPDA.2011.6088465

C. Barbosa, J. Paulino, W. Boaventura

引用次数: 5

Ageing of metal oxide varistors due to surges 由浪涌引起的金属氧化物压敏电阻老化

2011 International Symposium on Lightning Protection Pub Date : 2011-12-01 DOI: 10.1109/SIPDA.2011.6088462

C. de Salles, M. L. B. Martinez, A. A. D. de Queiroz

{"title":"Ageing of metal oxide varistors due to surges","authors":"C. de Salles, M. L. B. Martinez, A. A. D. de Queiroz","doi":"10.1109/SIPDA.2011.6088462","DOIUrl":"https://doi.org/10.1109/SIPDA.2011.6088462","url":null,"abstract":"Surge arresters are exposed to a series of stresses that trigger changes in their nonlinear behaviors. This paper deals with the ageing of metal oxide varistors concerning the stresses associated to high current short duration surges. The ageing of the samples is evaluated by analyzing the evolution of the resistive component of the leakage current after every impulse current application in non energized samples. This procedure aims at determining the ageing prescribed by impulse currents disregarding the superposition of power frequency voltage effects. To this a sequence of 8 × 20 µs impulses were applied to sets of metal oxide resistors at different temperatures. After every impulse application and the resistor reached the room temperature the value of the resistive component of the leakage current and the power losses were recorded and compared. These obtained data are statistically analyzed and the results are correlations between the ageing evolution and number of applied impulses, the influence of the temperature and discharge current amplitude. The set correlations are compared to studies from 80's, and concerning the provisions of relevant standards.","PeriodicalId":277573,"journal":{"name":"2011 International Symposium on Lightning Protection","volume":"332 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115876230","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: 18

CN tower lightning flash components CN塔闪电闪组件

2011 International Symposium on Lightning Protection Pub Date : 2011-12-01 DOI: 10.1109/SIPDA.2011.6088431

A. Hussein, M. Milewski

引用次数: 3