Results 1 to 10 of about 4,260,299 (284)

An innovative approach to partial discharge measurement and analysis in DC insulation systems during voltage transient and in steady state

open access: yesHigh Voltage, 2021
Measuring partial discharges in DC insulation systems is an issue due to the lack of a reference relating the voltage waveform to the physics of discharge phenomena.
Gian Carlo Montanari, Riddhi Ghosh
doaj   +2 more sources

Non-Contact High Voltage Measurement in the Online Partial Discharge Monitoring System

open access: yesEnergies, 2021
The article presents an innovative system for non-contact high voltage (HV) measurement, which extends the measurement capabilities of a portable partial discharges (PD) monitoring system intended for diagnostics of power transformers.
Krzysztof Walczak, Wojciech Sikorski
doaj   +3 more sources

A Review of Online Partial Discharge Measurement of Large Generators

open access: yesEnergies, 2017
Online partial discharge (PD) measurements have long been used as an effective means to assess the condition of the stator windings of large generators.
Yuanlin Luo, Zhaohui Li, Hong Wang
doaj   +3 more sources

Trichel Pulse Analysis: Physical Calculation and Validation by Using Broadband Measurements

open access: yesEnergies, 2021
Partial discharge measurement is part of the monitoring of equipment in power engineering systems. It provides important information about the condition of the equipment and in particular the condition of the insulation components.
Kerstin Friebe, Frank Jenau
doaj   +1 more source

Partial discharge detection and identification at low air pressure in noisy environment

open access: yesHigh Voltage, 2021
Increasing demand for electric power in more electric aircraft requires a higher operating voltage for the power system that leads to higher electric stress on the insulation system.
Ali Nasr Esfahani   +2 more
doaj   +1 more source

Robust on-line partial discharge measurement of 35-kV cables in wind farms via dual sensors

open access: yesEnergy Reports, 2023
Condition-based maintenance of cables in wind farms is critical for their operation reliability and stability. A promising solution to this task is to carry out on-line partial discharge measurement on the cables.
Yuan Yan, Peng Huo, Hongjie Li
doaj   +1 more source

Partial Discharge Ultrasonic Detection Method and Frequency Characteristics at Oil-filled Cable Terminal

open access: yesZhejiang dianli, 2022
In order to effectively detect latent insulation faults at oil-filled cable terminals, the finite element analysis method of acoustic field is used to study the characteristics of partial discharge acoustic field distribution at oil-filled cable ...
DU Liang   +5 more
doaj   +1 more source

Spiral Antenna Design and Analysis As a Tool to Measure Partial Discharge in High Voltage Equipment [PDF]

open access: yesE3S Web of Conferences, 2021
The high-voltage equipment often experiences disturbances caused by the age of the equipment, installation errors, partial discharge disturbances. Of these kinds of disturbances, partial discharge is one of the most common disturbances in high-voltage ...
Laksono Deni Tri   +2 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

open access: yesIET 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   +3 more
doaj   +1 more source

Research on equivalent height compensation measurement method of UHF partial dispenser based on GTEM cell

open access: yesEnergy Reports, 2020
Based on the GTEM chamber for the equivalent height detection method of UHF partial discharge tester, this paper simulates the electric field at the top of the GTEM window. The results show that the electric field strength changes significantly along the
Weiwei Zhang   +4 more
doaj   +1 more source

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