Results 91 to 100 of about 3,438,442 (401)

Application of detection method of ultrasound and high-frequency current in partial discharge detection of 35 kV switchgear

open access: yesGong-kuang zidonghua, 2014
The paper introduced basic principle, detection and determinants of partial discharge detection method based on a combination method of ultrasound and high-frequency current.
LUO Dongsong, LU Ye
doaj   +1 more source

Automated recognition of partial discharges

open access: yesIEEE Transactions on Dielectrics and Electrical Insulation, 1995
An overview of automated recognition of partial discharges (PD) is given. The selection of PD patterns, extraction of relevant information for PD recognition and the structure of a data base for PD recognition are discussed. Mathematical methods useful for the design of the data base are examined.
openaire   +3 more sources

Clinical Characteristics of Parkinsonism in HTLV‐1‐Associated Myelopathy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Human T‐lymphotropic virus type 1 (HTLV‐1)‐associated myelopathy/tropical spastic paraparesis (HAM/TSP) is the classic neurological manifestation of HTLV‐1 infection; however, this virus has also been associated with other neurological disorders. Concurrent parkinsonism is relatively rare and presents diagnostic challenges.
Mika Dozono   +8 more
wiley   +1 more source

Longitudinal Relationship Between Pain and Depression in People With Inflammatory Arthritis: A Narrative Review

open access: yesArthritis Care &Research, EarlyView.
As many patients with inflammatory arthritis (IA) have chronic pain, understanding how to best assess and manage pain in IA is a priority. Comorbid depression is prevalent in adults with IA, affecting 15% to 39% of people. Although pain and depression are thought to be associated in IA, this concept is largely based on cross‐sectional data.
Natasha Cox   +3 more
wiley   +1 more source

An optimized method of partial discharge data retrieval technique for phase resolved pattern [PDF]

open access: yes, 2016
The measurement of phase resolved partial discharge requires a gigantic memory capacity to store all the waves of the PD test results. This limitation eventually hinders the testing.
Abral, H.   +5 more
core   +3 more sources

Partial Discharge Fault Detection of Substation GIS Based on CEEMDAN Fusion Processing Algorithm of Multi‐Frequency Signals

open access: yesEngineering Reports
Partial discharge is a common fault mode of GIS equipment, and timely and accurate detection of its status is of great significance for ensuring the safe operation of the power system.
Yuan Sun, Hao Xie, Li Chang
doaj   +1 more source

Avoidable Hospitalizations in Persons With Rheumatoid Arthritis: A Population‐Based Study Using Administrative Data

open access: yesArthritis Care &Research, EarlyView.
Objective We estimated incidence rates of avoidable hospitalizations by persons with rheumatoid arthritis (RA) relative to the general population. Methods We identified individuals meeting a validated case definition for RA based on International Classification of Diseases, Ninth Revision, Clinical Modification (ICD‐9‐CM) and ICD‐10‐CA codes in years ...
Dani G. Contreras   +6 more
wiley   +1 more source

Monitoring insulator contamination level under dry condition with a microwave reflectometer [PDF]

open access: yes, 2015
—Build-up of surface contamination on high voltage insulators can lead to an increase in leakage current and partial discharge, which may eventually develop into flashover. Conventional contamination level monitoring systems based on leakage current,
Jiang, Yan   +5 more
core   +1 more source

Circuit simulation of partial discharge aspects

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2017
The DC motors are used in most production processes of oil, mining, coal and other industries. Reliability of their operation largely depends on the state of insulation such as enamel wire insulation and the main insulation of large electrical machines ...
Vyacheslav Vladimirovich Strugov   +1 more
doaj   +2 more sources

Stator Insulation Partial Discharge Test and Reliability Evaluation of Traction Motor

open access: yes机车电传动, 2021
Aiming at the local defects of traction motor stator insulation, based on the partial discharge pulse current method, a scheme for evaluating the reliability of traction motor stator insulation was proposed. First, discharge models were established based
Yuenan LIU   +4 more
doaj  

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