Results 11 to 20 of about 7,233,941 (242)
Analytical methods for assessing paper degradation In transformers [PDF]
, 2006 Power transformers are essential equipments for distributing electricity. However, maintenance of these equipments is necessary to ensure long working life and to avoid catastrophic incidents.
Christofidis, Stavros
core +7 more sources
IET Generation, Transmission & Distribution, 2023 Partial discharge is one of the main reasons for insulation degradation in high‐voltage apparatuses. Partial discharge is an ineluctable phenomenon that happens when a high electrical field is adjacent to an insulator. High‐frequency current transformers
Hamidreza Besharatifard +3 more
doaj +1 more source
Countermeasure to Prevent Transformer Differential Protection From False Operations
IEEE Access, 2023 The reliability of the transformer differential protection is under threat from multiple interferences, including the inrush condition, the current transformer saturation condition, and the arc fault condition.
Penghui Liu +5 more
doaj +1 more source
The Journal of Engineering, 2018 On the basis of the principle of breaker failure protection delay and the analysis of the main factors which affect the protection, a sub-station-area breaker failure and dead-zone protection technical scheme based on the current differential principle ...
Baowei Li +4 more
doaj +1 more source
The Journal of Engineering, 2019 The Rogowski coil current transformer is widely used in intelligent substations for its rapid response, wide bandwidth measurement, and non-magnetic saturation.
Fubin Pang +3 more
doaj +1 more source
UHF diagnostic monitoring techniques for power transformers [PDF]
, 2004 This paper initially gives an introduction to ultra-high frequency (UHF) partial discharge monitoring techniques and their application to gas insulated substations.
Bennoch, C.J. +3 more
core +3 more sources
IET Generation, Transmission & Distribution, 2023 The algorithms of the present generation of practical differential relays are based on two methods. The first method is based on the ratio of the harmonic content of the differential current, and the second one is based on the length of the time interval
Ali Sahebi +4 more
doaj +1 more source
Nonintrusive overhead‐line current detection using a vertical magnetic‐field sensor array
IET Generation, Transmission & Distribution, 2023 With the growing infrastructure for overhead lines, the demand for overhead‐line condition‐monitoring technologies has become increasingly urgent. Traditional current transformers used to measure three‐phase currents are bulky and difficult to install ...
Kun‐Long Chen +2 more
doaj +1 more source
Вестник Северо-Кавказского федерального университета, 2022 Despite the fact that the problem of saturation of current transformers (CT) has been known for a long time, it has not lost its relevance now. Cases of malfunctioning as a result of oversaturation of CT are still recorded today.
P. Shagimardanov
doaj +1 more source
IEEE Open Journal of Power Electronics, 2022 In both planar and wire-wound transformers, large copper cross-sections and parallel windings are often used to increase conduction area and decrease copper loss.
Michael Solomentsev, Alex J. Hanson
doaj +1 more source