This paper is concerned with lightning surge propagation on wind turbines. As wind power generation undergoes rapid growth, lightning incidents involving wind turbines have come to be regarded as a serious problem. Nevertheless, no known studies exist yet in Portugal regarding lightning protection of wind turbines. Hence, we present a case study, based on a wind turbine with an interconnecting ...

A climatology of lightning ground flash density is examined for the Australian region based on 18 years of data. The dataset and methodology used are consistent with that of a previous study based on eight years of data. Lightning flash densities are obtained from two satellite instruments—the Lightning Imaging Sensor and the Optical Transient Detector. A climatological map of lightning ground ...

1. Introduction Automated lightning warning systems are a critical component of many day-today operations. This is particularly true of airports but also applies in some industrial applications, such as mining and the manufacture, testing, and handling of explosives and weapons. Many automated lightning warning systems use a combination of lightning detection information and one or more electri...

1 INTRODUCTION Electric power utilities have sustained significant damage from lightning. The occurrence of line faults is one result of lightning damage. To prevent it, power utilities adopt various measures of protection from lightning. Transmission line overhead ground wires greatly contribute to a decrease in the number of line faults by preventing direct hits to the power lines. Lightning ...

Lightning mapping technology has proven instrumental in understanding lightning. In this work we present a pipeline that can use lightning observed by the LOw-Frequency ARray (LOFAR) radio telescope to construct a 3D map of the flash. We show that LOFAR has unparalleled precision, on the order of meters, even for lightning flashes that are over 20 km outside the area enclosed by LOFAR antennas ...

E-mail: [email protected] T his paper deals with the direct effects of lightning strike on aircraft structures. In a first part, the phenomenology of lightning arc attachment on aircraft is introduced. Some specific features of lightning arcs observed in flight or created in the laboratory are presented. Some recent developments and results from numerical simulations are shown. The sha...

A lightning return-stroke model, based on the lightning return-stroke current derivative measured at the Toronto CN Tower is presented in this paper. A 3-section transmission line representation of the CN Tower along with the derivative of the modified Heidler function is used to simulate the measured current derivative signal. Reflections from major structural discontinuities of the CN Tower a...

Simulation of weather scenery in computer graphics (CG) is an important issue that has a wide range of applications related to image content, such as in movies and in various landscape simulations. In general, research to date into CG lightning has focused on generating a lightning pattern by applying probability and statistics techniques, which do not consider the generating mechanism of light...

Cloud-to-ground lightning data from the National Lightning Data Network (NLDN), satellite visible and radar-derived products are used to train a lightning prediction algorithm. The radar reflectivity values are clustered to identify storm and real-time geometric, lagrangian and scalar attributes of those storms are computed. A lightning density field is ”precast” to form the target decision fie...

[1] Very low frequency (VLF) electromagnetic pulses radiated by lightning are an effective tool for probing the D region ionosphere. We detect and measure the D region ionospheric disturbances caused by the strong lightning flash by analyzing the broadband VLF spectrum from lightning that occurred just before and after a nearby intense lightningdischarge.Comparing themeasured electrondensity ch...