LIGHTNING-INDUCED VOLTAGES ON OVERHEAD WIRE
نویسندگان
چکیده
منابع مشابه
Lightning - Induced Voltages on Overhead Distribution Lines : Theoretical and Experimental Investigation of related Problems and their Impact on Power Quality
Recent power quality studies have been focused on the source-identification of voltage disturbances at distribution network busses. This paper describes a method aimed at correlating indirect-lightning events with power systems relay operations, associated with voltage dips. The proposed method, based on the coordinated use of the Italian lightning location system CESI-SIRF, the Italian monitor...
متن کاملDesigning Concept on Lightning Protection of Overhead Power Distribution Line
The principle is shown for lightning protection of power distribution lines taking the effects of surge arresters, overhead ground wires and their combined use into consideration. Moreover an outline of a rational design method targeting direct lightning hits, induced overvoltages and backflow currents from high structures.
متن کاملLightning Protection of Overhead Power Distribution Lines
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...
متن کاملCalculation of Lightning-induced Voltages in MODELS Including Lossy Ground Effects
The paper outlines how lightning-induced voltages (LIV) in multi-conductor overhead lines can be calculated in MODELS in the ATP-EMTP. Lossy ground effects on the radial electrical field is taken into account by the CoorayRubinstein approximation, but the overhead line itself is assumed to be lossless. This is a reasonable assumption for line lengths up to 1-3 km, depending on the ground resist...
متن کاملInsulation coordination of MV cables against lightning - induced overvoltages generated by LEMP - coupled overhead lines
-The paper deals with the stresses of cable insulations due to lightning induced overvoltages for the case of distribution networks composed by MV overhead lines and buried cables. We are here interested only in the conditional probability of the cable breakdown in absence of line flashovers, which means that flashovers along the overhead line are disregarded. We illustrate a procedure based on...
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ژورنال
عنوان ژورنال: Journal of Atmospheric Electricity
سال: 1992
ISSN: 0919-2050
DOI: 10.1541/jae.12.77