Results 11 to 20 of about 1,138,456 (310)
Extra‐sensitive impedance differential protection immune to CT saturation
IET Generation, Transmission & Distribution, 2020 For extra‐high voltage transmission lines configured with a communication channel, the current differential protection is facing a dilemma between sensitivity and security. On the one hand, the resistive coverage will not be sufficiently high if security
Ning Tong +6 more
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Impact of CT saturation on overcurrent relays
The Journal of Engineering, 2018 An overcurrent relay analyses and processes the secondary currents from a set of current transformers (CTs) and if the currents exceed the operating threshold initiates the tripping of a circuit breaker after an appropriate time. An important issue for a protection relay is how it responds when the steel core of the CT is saturated. The exact behaviour
Yanjun Ma, Peter Crossley
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Energies, 2017 Current transformer (CT) saturation is one of the significant problems for protection engineers. If CT saturation is not tackled properly, it can cause a disastrous effect on the stability of the power system, and may even create a complete blackout.
Muhammad Ali +3 more
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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
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Experimental Study on the Shear Band of Methane Hydrate-Bearing Sediment
Journal of Marine Science and Engineering, 2021 The occurrence of a shear band is often thought as the precursor of failure. To study the initiation of shear banding in gas hydrate-bearing sediments, two groups of triaxial compression tests combined with a CT (computer tomography) scan were conducted ...
Xiaobing Lu +5 more
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Integrated busbar protection scheme utilizing a numerical technique based on coherence method
The Journal of Engineering, 2022 A Busbar (BB) is one of the most important elements of a power system, which links a variety of elements such as generators, power transformers, transmission lines and loads.
R. A. Mahmoud
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Research on oil displacement mechanism in conglomerate using CT scanning method
Petroleum Exploration and Development, 2014 Taking the conglomerate from Xinjiang Oilfield as study object, the porosity distribution characteristics of the conglomerate were analyzed with CT scanning; through the online monitoring of the water and polymer flooding process in a conglomerate core ...
Shiguan DENG +9 more
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Saturation Detection-Based Blocking Scheme for Transformer Differential Protection
Energies, 2014 This paper describes a current differential relay for transformer protection that operates in conjunction with a core saturation detection-based blocking algorithm.
Byung Eun Lee +5 more
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Macromol, 2023 This work evaluated the synergistic effect of citronella essential oil (Ct) and montmorillonite (MMT) (called hybrid compound) incorporated in Poly(lactic acid) (PLA) films at different concentrations (3, 10, 15, and 20 wt%). PLA films were characterized
Rafaela R. Ferreira +3 more
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The test bench for simulation impact of core saturation on the current transformer on coordination of inverse relay protection [PDF]
E3S Web of ConferencesWhen the measurement-type Current Transformer (CT) is used for protection schemes, this condition causes problems related to the operation of the protection relay.
Supriyanto, Utomo Heri Budi, Sunarto
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