Results 1 to 10 of about 80,385 (313)

Overview and Partial Discharge Analysis of Power Transformers: A Literature Review

IEEE Access, 2021
The high voltage power transformer is the critical element of the power system, which requires continuous monitoring to prevent sudden catastrophic failures and to ensure an uninterrupted power supply.
Md Rashid Hussain, Shady S. Refaat, Haitham Abu-Rub   +2 more
doaj   +3 more sources

An Evaluation Method for Partial Discharge in Generator Stator Bar Insulation Based on Fiber-Optic Acoustic Detection [PDF]

Sensors
Partial-discharge (PD) monitoring is essential for assessing the insulation condition of generator stator bars. Conventional methods are susceptible to electromagnetic interference and are difficult to deploy in confined stator geometries.
Jianlin Hu, Jiapeng Yang, Peiyu Qin, Xingliang Jiang, Wentao Luo   +4 more
doaj   +2 more sources

A Partial Discharge Detection Approach in Distribution Cabinets Using a Mach–Zehnder Interferometer [PDF]

Sensors
Distribution cabinets are of paramount importance in power supply systems. Internal partial discharge may result in power interruption or even the outbreak of fire.
Junliang Wang, Ying Zhang, Xiang Gu
doaj   +2 more sources

In-depth exploration of partial discharge modelling methods within insulations

Cleaner Engineering and Technology, 2022
Partial discharge (PD) activities are the essential contributor of insulation failure, which constitute more than 60% for damaging high voltage equipment.
Hadi Nabipour Afrouzi, Ateeb Hassan, Daphne Tay Ye Chee, Kamyar Mehranzamir, Zulkurnain Abdul Malek, Saeed Vahabi Mashak, Jubaer Ahmed   +6 more
doaj   +1 more source

Investigation on the partial discharge characteristics of eco‐friendly nanofluid insulation of corn oil nanofluid

IET Nanodielectrics, 2021
The suitability of corn oil nanofluid as an insulation material is studied herein by analysing the partial discharge characteristics. Experiments are conducted on nano‐silica modified corn oil at 0.01, 0.05, and 0.1 wt.% mass fractions.
Shantha Kumar M, Kasi Viswanathan P, Shree Kumar H   +2 more
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

Simulation Analysis on Partial Discharge Signals Produced by Multiple Insulation Defects in GIS [PDF]

E3S Web of Conferences, 2020
In this paper, the simulation analysis on partial discharge (PD) signals produced by multiple insulation defects in gas insulated substation (GIS) has been researched by the simulation software of electromagnetic field (XFDTD).
Yun Yuxin, Xu Guangke, Zhang Weiwei, Li Xing, Chen Lingying   +4 more
doaj   +1 more source

Evaluation of a calibration technique in measuring partial discharges inside mineral oils with a high‐frequency current transformer (HFCT) sensor: A case study

IET Generation, Transmission & Distribution, 2023
Partial discharge is one of the main reasons for insulation degradation in high‐voltage apparatuses. Partial discharge is an ineluctable phenomenon that happens when a high electrical field is adjacent to an insulator. High‐frequency current transformers
Hamidreza Besharatifard, Saeed Hasanzadeh, S M Muyeen, Innocent Kamwa   +3 more
doaj   +1 more source

Identifying Prognostic Indicators for Electrical Treeing in Solid Insulation through PD Analysis [PDF]

, 2013
This paper presents early results from an experimental study of electrical treeing on commercially available pre-formed silicone samples. A needle-plane test arrangement was set up using hypodermic needles.
Binti Ab Aziz, Nur Hakimah, Catterson, Victoria, Judd, Martin   +2 more
core   +5 more sources

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