Results 71 to 80 of about 2,547 (216)
Lightning Performance on Overhead Distribution Lines : After Improvement Field Observation [PDF]
ITB Journal of Engineering Science, 2009 Two feeders of 20 kV overhead distribution lines which are located in a high lightning density area are chosen to be observed as a field study due to their good lightning performance after improvement of lightning protection system.
Reynaldo Zoro +3 more
doaj
Impulse-driven surface breakdown data : a Weibull statistical analysis [PDF]
, 2012 Surface breakdown of oil-immersed solids chosen to insulate high-voltage, pulsed-power systems is a problem that can lead to catastrophic failure. Statistical analysis of the breakdown voltages, or times, associated with such liquid-solid interfaces can ...
Given, M +7 more
core +1 more source
High Voltage, Volume 10, Issue 4, Page 1061-1071, August 2025.Abstract This paper presents an approach to accurately forecast the yearly occurrence of flashovers caused by lightning‐induced voltage in overhead power lines in the presence of layered ground. The aim is to improve the accuracy of flashover rate estimation by using the insulator volt‐time model.
Amin Foroughi Nematollahi +2 more
wiley +1 more source
Analysis of multiple lightning overvoltage on 110 kV transmission lines
Results in EngineeringAs pointed out by the CIGRE TB 549 report issued by the International Power Grid Committee, >80 % of cloud-to-ground lightning are multiple lightning strokes (MLS), posing a severe threat to overhead transmission lines.
Yutao Tang +4 more
doaj +1 more source
Transient Nonlinear Electrothermal Adjoint Sensitivity Analysis for HVDC Cable Joints
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Volume 38, Issue 3, May/June 2025.ABSTRACT Efficient computation of sensitivities is a promising approach for efficiently designing and optimizing high voltage direct current cable joints. This paper presents the adjoint variable method for coupled nonlinear transient electrothermal problems as an efficient approach to compute sensitivities with respect to a large number of design ...
M. Greta Ruppert +2 more
wiley +1 more source
IEEE AccessPort cranes, with their tall metallic structures operating in exposed coastal environments, are highly vulnerable to lightning strikes. The festoon cable system, critical for power and signal transmission, represents a key point of vulnerability due to ...
Zhibo Yang, Yilong Zhang
doaj +1 more source
International Journal of Ceramic Engineering &Science, Volume 7, Issue 2, March 2025.In this paper, a method to improve the performance of varistor with the help of computational model was presented and verified by experiments. Abstract This paper investigates the impact of the microstructure of zinc oxide varistor ceramics on their electrical properties.
Xiao Lei +5 more
wiley +1 more source
, 2011 Cross-linked polyethylene (XLPE) is commonly used within high voltage cable insulation. It has improved thermal and mechanical resistance compared to normal low density polyethylene (LDPE).
Dao, N L, Lewin, P L, Swingler, S G
core
Delta-Bar-Delta and directed random search algorithms to study capacitor banks switching overvoltages [PDF]
, 2012 This paper introduces an approach to analyse transient overvoltages during capacitor banks switching based on artificial neural networks (ANN). Three learning algorithms, delta-bar-delta (DBD), extended delta-bar-delta (EDBD) and directed random
Feuillet Rene +2 more
core +1 more source
Mechanism and suppression of breaking overvoltage of DC circuit breakers
High Voltage, Volume 10, Issue 1, Page 32-46, February 2025.Abstract The occurrence of breaking overvoltage in a DC circuit breaker (DCCB) poses a potential threat to the safe operation of a DC grid. Based on the structure of the ±10 kV three‐terminal DC distribution network, this paper sets up the medium‐voltage DCCB and formulates a fault protection strategy.
Lu Qu +7 more
wiley +1 more source