Probabilistic evaluation of lightning performance of overhead transmission lines, considering non-vertical strokes
نویسندگان
چکیده
منابع مشابه
Performance of Medium Voltage Overhead Distribution Lines Against Lightning Discharges
The lightning discharges are one of the main causes of interruptions of medium voltage overhead distribution lines, being the reason of great concern for the utility companies. Its destructive effects frequently extends to equipments and connected installations, with the possibility to cause personal injuries and material damages, beyond economic losses, due to out of income and the possibility...
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Distribution lines are often located in areas with high ground flash densities, being therefore subject to lightning-caused power interruptions. This paper presents an overview of the various types of lightning overvoltages that can arise on overhead power distribution networks, as well as typical voltage waveforms. The effectivenesses of the most important methods for mitigating such overvolta...
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The lightning performance of an overhead Multiconductor Transmission Line (MTL) system is typically represented by means of curves reporting how many lightning faults per year the system may experience as a function of its insulation level [1]. In other words, it expresses the probability that the lines are subject to an overvoltage greater than their critical flashover voltage (CFO). Such curv...
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High–bit–rate communication over power lines is a promising solution to the last–mile problem. We examine the use of bandwidth–efficient, non–coherent multicarrier modulation as simple, flexible, and robust transmission scheme over power–line channels. Adaptive, requiring channel state information at the transmitter, and non–adaptive multicarrier modulation are discussed and assessed. The effec...
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This paper presents a new method, based on analytical relations and Monte Carlo simulation for calculating the lightning performance of overhead lines caused by direct strokes. The aim of the work is to reduce the computing time together with retaining enough accuracy to estimate the line lightning performance and performing the risk analysis of power networks. In the proposed method, some modi...
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ژورنال
عنوان ژورنال: Scientia Iranica
سال: 2012
ISSN: 1026-3098
DOI: 10.1016/j.scient.2011.06.014