Results 1 to 10 of about 75,526 (309)

Influence of Insulating Material Properties on Partial Discharges at DC Voltage

Energies, 2020
Understanding a partial discharge mechanism at direct current (DC) is an actual research topic that requires both modeling, simulations and measurements.
Marek Florkowski
doaj   +4 more sources

A Comparison of Inductive Sensors in the Characterization of Partial Discharges and Electrical Noise Using the Chromatic Technique

Sensors, 2018
Partial discharges (PDs) are one of the most important classes of ageing processes that occur within electrical insulation. PD detection is a standardized technique to qualify the state of the insulation in electric assets such as machines and power ...
Jorge Alfredo Ardila-Rey, Johny Montaña, Bruno Albuquerque de Castro, Roger Schurch, José Alfredo Covolan Ulson, Firdaus Muhammad-Sukki, Nurul Aini Bani   +6 more
doaj   +4 more sources

Robust Condition Assessment of Electrical Equipment with One Class Support Vector Machines Based on the Measurement of Partial Discharges

Energies, 2018
This paper presents a system for the detection of partial discharges (PD) in industrial applications based on One Class Support Vector Machines (OCSVM).
Emilio Parrado-Hernández, Guillermo Robles, Jorge Alfredo Ardila-Rey, Juan Manuel Martínez-Tarifa   +3 more
doaj   +2 more sources

Impact of DC Voltage Enhancement on Partial Discharges in Medium Voltage Cables—An Empirical Study with Defects at Semicon-Dielectric Interface

Energies, 2017
A scientific consensus is emerging on the benefits of direct current (DC) distribution in medium voltage (MV) power systems of ships and cities. At least 50% space savings and increased power transfer capacity are estimated with enhanced voltage DC ...
Aditya Shekhar, Xianyong Feng, Angelo Gattozzi, Robert Hebner, Douglas Wardell, Shannon Strank, Armando Rodrigo-Mor, Laura Ramírez-Elizondo, Pavol Bauer   +8 more
doaj   +3 more sources

Separation of Radio-Frequency Sources and Localization of Partial Discharges in Noisy Environments

Sensors, 2015
The detection of partial discharges (PD) can help in early-warning detection systems to protect critical assets in power systems. The radio-frequency emission of these events can be measured with antennas even when the equipment is in service which ...
JOSÉ Manuel Fresno De Marcos, Juan Manuel Martinez, Guillermo Robles   +2 more
exaly   +2 more sources

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, Thiruvelmurugan Janani, Anbuselvan Shanmathi   +2 more
doaj   +1 more source

Partial discharges characteristics study in XLPE cable insulation with multiple defects [PDF]

Омский научный вестник, 2021
The paper simulates the electric field intensity picture in the cable with one and several defects. Modeling has shown that the presence of several closely spaced defects does not lead to an increase in the electric field intensity in comparison with
I. V. Komarov, D. A. Polyakov, K. I. Nikitin   +2 more
doaj   +1 more source

Monitoring of Partial Discharges in Cable Insulation and Cable Head Using Acoustic Method [PDF]

Archives of Acoustics, 2022
The article presents the application of Acoustic Emission (AE) method for detection and registration of partial discharges (PD) generated in medium voltage (MV) cable isolation and MV cable head.
Zbigniew Ranachowski, Krzysztof Wieczorek, Przemysław Ranachowski, Tomasz Dębowski   +3 more
doaj   +1 more source

Study power of partial discharges to voltage intensity in XLPE-insulated cables [PDF]

Омский научный вестник, 2020
The article investigates partial discharges (PD) as a mechanism of insulation destruction. Some of the known mathematical models of insulation aging take into account the effect of partial discharges. These models are based on the dependence of partial
D. A. Polyakov, K. I. Nikitin, N. A. Tereschenko, I. V. Komarov, U. V. Polyakova   +4 more
doaj   +1 more source

Partial Discharge Analysis and Simulation Using the Consecutive Pulses Correlation Method

Energies, 2021
The behaviour of partial discharge as consequences of an alternating current (AC) is already well defined. AC partial discharges have completely different behaviour, background physics and parameters than partial discharges (PD) under direct current (DC)
Ondřej Kozák, Josef Pihera
doaj   +1 more source