Results 21 to 30 of about 452 (193)
Analysis of Discharge Faults Between Flanges Caused by Transient Enclosure Voltage
IEEE Access, 2020 An increase in transient enclosure voltage can threaten the personal safety of workers and the normal operation of secondary equipment and may cause discharge between the flanges of gas insulated switchgear (GIS) enclosures.
Jisheng Li +4 more
doaj +1 more source
Analysis of influential factors in determining very fast transient overvoltages of GIS substations [PDF]
, 2014 High voltage Gas Insulated Substation (GIS) is threatened by Very Fast Transient Overvoltage (VFTO) which is high amplitude and high frequency transient within the range from 100 kHz up to 50 MHz in power systems. Operation of Disconnecting Switch is the
Nourirad, Ghasem +5 more
core +1 more source
The Journal of Engineering, 2019 An accurate computational model of transformer winding for potential distribution analysis under impulse voltage is very important for the design of transformer inter-turn insulation, especially for large capacity transformers such as ultrahigh-voltage ...
Shuang He +7 more
doaj +1 more source
Research on Conducted Disturbance to Secondary Cable Caused by Disconnector Switching Operation
Frontiers in Energy Research, 2022 The disconnector switching operation in GIS not only generates very fast transient overvoltage (VFTO) in primary equipment, but also couples to the secondary system, which affects normal operation of the secondary equipment.
Xiaoyue Chen +6 more
doaj +1 more source
Capacitive voltage sensor for measuring very fast transient overvoltages in GIS
Electrical Engineering in Japan, 1994 AbstractA reliable technique is needed for accurate measurement of very fast transient overvoltages such as disconnector‐induced surges occurring in GIS which have very steep front and high‐frequency oscillation. Recently, capacitive voltage sensors with very short response times have been proposed for this purpose.
Masafumi Yashima +2 more
openaire +2 more sources
High Voltage, 2023 The switching operation of gas insulated switchgear (GIS) disconnector will produce multiple random spark discharges between the gas gaps of the disconnector.
Zihan Teng +7 more
doaj +1 more source
, 2009 In this paper, to calculate overvoltage in air-cored transformer windings under very fast transient overvoltage, firstly, the voltage transfer functions are calculated which are measured by network analyser or calculated from the distributed parameters ...
Esmaiilzadeh, S. +4 more
core +1 more source
Research and Experiments on an External Miniaturized VFTO Measurement System
Sensors, 2019 Disconnect switch and circuit breakers operations in gas insulated switchgear (GIS) systems may produce very fast transient overvoltage (VFTO). Detecting VFTO is the first step for researchers to reduce the damage to other equipment of the substation ...
Lizhe Wang +5 more
doaj +1 more source
Proposal of a standard methodology for assessment of very fast electromagnetic transients on power reactors in gas insulated substations. [PDF]
, 2023 Propõe-se o desenvolvimento de uma metodologia de modelagem e análise computacional de reatores de potência para simulação de transitórios eletromagnéticos muito rápidos (Very Fast Transient VFT), a fim de obter maior resolução do comportamento em altas
Melo, André de Souza
core +1 more source
, 2022 This paper is focused on the assessment and mitigation of the transient response of a Gas Insulated Substation's (GIS) grounding grid to the fault due to voltage breakdown using the Partial Element Equivalent Circuit (PEEC) numerical approach.
Micu, Dan D +5 more
core +2 more sources