Study on the Effect of Void Geometry and Location on Electric Field Distribution and Partial Discharges in HVDC Cables [PDF]
E3S Web of Conferences, 2023 Nowadays HVDC transmission systems are preferred over HVAC systems because of their less power loss and high reliability. In the HVDC cable transmission system, there is a problem of Partial Discharges (PD) occurring due to cavities of the dielectrics in
Subramaniam Sundaramahalingam +2 more
doaj +1 more source
Towards the text compression based feature extraction in high impedance fault detection [PDF]
, 2019 High impedance faults of medium voltage overhead lines with covered conductors can be identified by the presence of partial discharges. Despite it is a subject of research for more than 60 years, online partial discharges detection is always a challenge,
Fulneček, Jan +4 more
core +1 more source
Modelling of Electrical Discharge Processes for Optimization of Corona-Protection System of High Voltage Rotating Machines Insulation [PDF]
Problems of the Regional Energetics, 2020 The aim of this work is to study the influence of technological defects in stator windings electri-cal insulation system on the inception of partial discharges in the stator slot of air-cooled electric rotating machines.
Andreev A.M. +5 more
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Orbitofrontal epilepsy: Electroclinical analysis of surgical cases and literature review [PDF]
, 2004 Clinical and electrographic data were reviewed on 2 of our patients with orbitofrontal epilepsy who were seizure free at 5-year follow-up, and on 2 similar patients from the literature.
King, Don W. +4 more
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Application of Image Sensors to Detect and Locate Electrical Discharges: A Review
Sensors, 2022 Today, there are many attempts to introduce the Internet of Things (IoT) in high-voltage systems, where partial discharges are a focus of concern since they degrade the insulation.
Jordi-Roger Riba
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Partial discharges in power transformers [PDF]
E3S Web of ConferencesTansformers are among the most responsible and expensive elements of the power system, therefore monitoring the technical condition of the transformer is an important and urgent task.
Lopatchenko Gleb +4 more
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Analyses of partial discharges in dielectric samples under DC excitation [PDF]
, 2015 The main focus of the paper is to develop a better understanding of partial discharges under DC excitation. Partial discharges studied will initially be limited to discharges from well-defined discharge sites. These include corona, surface discharges and
Corr, Edward, Siew, W.H.
core +1 more source
High Voltage, 2022 In order to improve the sensitivity and accuracy of oil‐paper insulation partial discharge detection by the fibre‐optic Fabry–Perot (FP) ultrasonic sensor, this work studied the ultrasonic signal’s frequency characteristics of typical oil‐paper ...
Zhixian Zhang +6 more
doaj +1 more source
Classification of Superimposed Partial Discharge Patterns [PDF]
Energies, 2021 Phase resolved partial discharge patterns (PRPD) are routinely used to assess the condition of power transformers. In the past, classification systems have been developed in order to automate the fault identification task. Most of those systems work with the assumption that only one source is active.
Benjamin Adam, Stefan Tenbohlen
openaire +4 more sources
Analysis of Partial Discharge Activity for Evaluation of the State of High Power Electric Generators Stator Windings [PDF]
Problems of the Regional Energetics, 2016 The paper shows the importance of trending of partial discharge activity in assessing the insulation condition. It is presented the principle of the measurement method and the quantities that characterize partial discharges and also the criteria utilized
Dumitrescu Sorin
doaj