Results 21 to 30 of about 24,259 (317)

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   +1 more source

Acoustic emission partial discharge detection technique applied to fault diagnosis: Case studies of generator transformers [PDF]

Serbian Journal of Electrical Engineering, 2016
In power transformers, locating the partial discharge (PD) source is as important as identifying it. Acoustic Emission (AE) sensing offers a good solution for both PD detection and PD source location identification.
Shanker Tangella Bhavani, Nagamani Hebbale Narasimhaiah, Punekar Gururaj Sudhindra   +2 more
doaj   +1 more source

Partial Discharge-Originated Deterioration of Insulating Material Investigated by Surface-Resistance and Potential Mapping

Energies, 2023
The endurance of medium- and high-voltage electrical insulation is a key reliability element in a broad spectrum of applications that cover transmission and distribution levels, the transportation segment, the industrial environment, and power ...
Marek Florkowski, Maciej Kuniewski
doaj   +1 more source

Frequency Resolved Partial Discharges Based on Spectral Pulse Counting

Energies, 2021
A partial discharge (PD) classification methodology based counting PD pulses in the spectral domain is proposed and presented in this paper. The spectral counting data are processed using the proposed PD Spectral Pulse Counting Mapping technique (PD-SPCM)
Anderson J. C. Sena, Rodrigo M. S. de Oliveira, Júlio A. S. do Nascimento   +2 more
doaj   +1 more source

A Building Block to the Design of Partial Discharge Free HV and MV Cables: Modeling Defects and Discharge Inception Voltage

IEEE Access
It is well assessed that partial discharges, PD, are one of the major causes of MV and HV cable system breakdown, thus investigating partial discharge phenomenology and harmfulness is a key topic in relation to electric asset component reliability ...
Gian Carlo Montanari, Muhammad Shafiq, Sukesh Babu Myneni   +2 more
doaj   +1 more source

Experimental investigation of different cavity arrangements in the high voltage solid insulation systems

Yanbu Journal of Engineering and Science, 2022
The partial discharge (PD) test is a widely used technique for evaluating the performance of the insulations in the high voltage (HV) plant. Electrical sparks, or PD, can deteriorate the insulation of HV equipment.
Abdullahi Mas'ud
doaj   +1 more source

Partial Discharge Inception Modelling of Insulating Materials and Systems: Contribution of Electrodes to Electric Field Profile Calculation

Applied Sciences, 2023
Partial discharge inception modeling is a powerful tool for material investigation and insulation system design in order to achieve the objective of PD-free operation of insulation systems.
Giovanni Gardan, Gian Carlo Montanari
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, Hrbáč, Roman, Mišák, Stanislav, Prílepok, Michal, Vantuch, Tomáš   +4 more
core   +1 more source

Effects of shorter phase-resolved partial discharge duration on PD classification accuracy

International Journal of Power Electronics and Drive Systems (IJPEDS), 2020
<span>Partial discharge (PD) pattern recognition is useful to diagnose insulation condition. PD measurement data is commonly represented in phase-resolved partial discharge (PRPD) format. PRPD is useful as it provides a visible pattern for different PD source and various features can be extracted for PD pattern recognition.
Xin, Chong Wan, Raymond, Wong Jee Keen, Illias, Hazlee Azil, Kin, Lai Weng, Haur, Yiauw Kah   +4 more
openaire   +3 more sources

NEW METHOD OF DETERMINING SIZE AND PROVISION OF DEFECTS IN THE INSULATION OF WINDINGS OF STATOR OF TURBOGENERATORS AT MEASUREMENT OF PARTIAL DISCHARGES IN THEM

Известия высших учебных заведений: Проблемы энергетики, 2018
The paper provides a new method for determining the dimensions and position of defects in the insulation of the stator windings of turbogenerators when partial discharges (PD) are measured in them.
A. M. Baboraik, A. Е. Usachev, R. G. Ildarkhanov, A. Y. Kubarev   +3 more
doaj   +1 more source