Results 81 to 90 of about 4,509 (248)

Analysis of a back flashover across insulator strings on a 115 kV transmission line tower by PSCAD

open access: yesKKU Engineering Journal, 2015
Lightning striking on a transmission tower induces high ground potential rise and high voltage at tower arms in which potential is normally at ground level, and subsequently causes overvoltage across an insulator string.
Worakit Anekthanasuwan   +3 more
doaj   +1 more source

Power quality and electromagnetic compatibility: special report, session 2 [PDF]

open access: yes, 2015
The scope of Session 2 (S2) has been defined as follows by the Session Advisory Group and the Technical Committee: Power Quality (PQ), with the more general concept of electromagnetic compatibility (EMC) and with some related safety problems in ...
Desmet, Jan   +2 more
core   +1 more source

Calculation model by Voronoi network and verification of zinc oxide varistor considering conduction mechanism

open access: yesInternational 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

Mechanism and suppression of breaking overvoltage of DC circuit breakers

open access: yesHigh 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

LIGHTNING SIMULATION STUDY ON LINE INSULATORS (Surge arresters) (110kV Overhead Power Line "Fierze F. Arrez - HC Dardhe") [PDF]

open access: yes, 2013
During the designing phase of the line of a private power plant was made a study of howthe atmospheric discharges from lighting impulses could affect the working regime of a newpower Hydro Power plant under construction in the Dardhe Puke Area.The line ...
Aldi Mucka, Rejnald Zylfi
core  

Research on influence of double energy absorptions on dynamic volt‐ampere characteristics of metal oxide varistors

open access: yesHigh Voltage, Volume 10, Issue 1, Page 78-87, February 2025.
Abstract Metal oxide varistors (MOVs) are extensively employed in DC circuit breakers (DCCBs) to suppress overvoltage, dissipate energy and build up voltage after interruption. Despite their widespread use, the performance of MOVs under short‐time, double energy absorption conditions is not well understood, posing a challenge to their application in ...
Chen Long   +5 more
wiley   +1 more source

Study on Tower Models for EHV Transmission Line

open access: yesMATEC Web of Conferences, 2016
Lightning outage accident is one of the main factors that threat seriously the safe and reliable operation of power system. So it is very important to establish reasonable transmission tower model and evaluate the impulse response characteristic of ...
Xu Bao-Qing   +4 more
doaj   +1 more source

Вивчення впливу атмосферних перенапруг на повітряні лінії середніх класів напруги [PDF]

open access: yes, 2017
The article is devoted to the effect of atmospheric overvoltages on the operation of overhead lines of electrical distribution networks with protected and bare wires.
Danylchenko, Dmytro
core   +1 more source

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