Results 51 to 60 of about 7,577,420 (289)

Design and applicability analysis of independent double acquisition circuit of all-fiber optical current transformer

open access: yesGlobal Energy Interconnection, 2019
The advantages of the all-fiber optical current transformer include but are not limited to being small in size, having no magnetic saturation, exhibiting high measurement accuracy, and boasting strong electromagnetic interference resistance. However, the
Songlin Gu   +5 more
doaj   +1 more source

Performance Problems of Non-Toroidal Shaped Current Transformers

open access: yesSensors, 2020
Nowadays, non-toroidal shape primary pass-through current transformers are commonly used for large current machines with several cables per phase. As these transformers exhibit no radial symmetry, it is not clear if they can be tested using the indirect ...
Carlos A. Platero   +4 more
doaj   +1 more source

Heterotropic regulation and negative homotropic cooperativity

open access: yesFEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea   +5 more
wiley   +1 more source

Review of methodologies used for detection of magnetising inrush and fault conditions in power transformer

open access: yesIET Energy Systems Integration, 2021
Reliable and dedicated protection of the transformer is the main requirement in the power system due to the supervision of a highly expensive equipment transformer. Non‐linear characteristics of the transformer give mysterious behaviour for the period of
Maulik Raichura   +2 more
doaj   +1 more source

Experimental studies of influence of DC and AC electric fields on bridging in contaminated transformer oil

open access: yes, 2015
Analysis of real operating condition revealed that HVDC transformers experience combined effect of DC biased AC electric field. The dynamics of pressboard particle in contaminated transformer oil under the influence of DC, AC and DC biased AC electric ...
Mahmud, S.   +4 more
core   +1 more source

Plasma EV Proteomics Identifies ECM Remodeling and Inflammatory Proteins LUM and C7 as Candidate Biomarkers in FSHD

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Facioscapulohumeral muscular dystrophy (FSHD) is one of the most debilitating and common muscular dystrophies. Despite its severity, no approved therapy exists for FSHD patients. However, several therapeutic candidates are currently under development, and some have recently entered clinical trials, marking the need for reliable ...
Mustafa Bilal Bayazit   +11 more
wiley   +1 more source

Distance Digital Algorithm Immune to Saturation of Current Transformer [PDF]

open access: yes, 2008
Saturation of current transformers due to slowly decaying primary current D.C. components cause errors in reproduction of the current fundamental harmonic. Most of the relays are more or less sensitive to the errors.
Wiszniewski, A, Szafran, J
core   +1 more source

Current transformer saturation detection by cross-correlation with independent target signal

open access: yesAin Shams Engineering Journal
The saturation of current transformers (CTs) leads to distortion in secondary current, potentially causing malfunction in protective relays within power systems.
Mahmoud M. Elgamasy   +3 more
doaj   +1 more source

Detection of the initial region of the current transformer core saturation

open access: yesRE&PQJ
In thefirst part of thepaper the detailed analysisof the existing current transformer (CT) saturation detectionmethodswiththeirclassificationis presented.Anew saturation detection method has beenproposed in secondpart of the paper. Mathematical description of the method is given.Inthe next section of the paper a CT model with test scheme ispresented ...
Odinaev, I.   +5 more
openaire   +2 more sources

Validation of Patient‐Reported Outcomes Measurement Information System (PROMIS) Pediatric Measures for Children With Chronic Nonbacterial Osteomyelitis

open access: yesArthritis Care &Research, EarlyView.
Objective To assess the validity of the Patient‐Reported Outcomes Measurement Information System (PROMIS) Pediatric measures in patients with chronic nonbacterial osteomyelitis (CNO). Methods Within the longitudinal patient registry of CNO, English‐speaking patients aged 8 years and older self‐reported PROMIS Pediatric measures of fatigue, pain ...
Mary M. Eckert   +43 more
wiley   +1 more source

Home - About - Disclaimer - Privacy