Results 21 to 30 of about 24,806 (164)
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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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
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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
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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
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Partial discharge in liquid nitrogen
Electrical Engineering in Japan, 1976 Results are presented of experiments on partial discharge in liquid nitrogen, including insulation breakdown characteristics of liquid nitrogen, partial discharge characteristics of composite insulation systems, lifetime of polymer films, impulse breakdown of polymer films in liquid nitrogen, etc.
Masamitsu Kosaki +3 more
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Partial Discharge Monitoring in Power Transformers Using Low-Cost Piezoelectric Sensors
Sensors, 2016 Power transformers are crucial in an electric power system. Failures in transformers can affect the quality and cause interruptions in the power supply.
Bruno Castro +6 more
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Partial discharges measurement by UHF method [PDF]
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2020 The unconventional UHF (Ultra High Frequency) method of measuring partial discharges (PD) is based on measuring electromagnetic waves (EM) in the UHF frequency band (300-3000) MHz, using appropriate antennas.
Malešević Nevena +3 more
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Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2022 Partial discharges can occur in different types of electric equipment and cause progressive insulation deterioration, so there is interest in monitoring partial discharges for assessing the state of the isolation of an electric system and to predict ...
Luís Victor Muller Fabris +1 more
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Известия высших учебных заведений: Проблемы энергетики, 2023 THE PURPOSE of the article is to discuss an updated survey of the technical condition of porcelain high-voltage insulators of the type IOS 110/400, which had defects with partial discharge intensities above 4 nC, at Tatenergo substations. The experiments
V. A. Golenishchev-Kutuzov +5 more
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