نتایج جستجو برای: Partial discharges

تعداد نتایج: 242908  

Journal: :IEEE Transactions on Electrical Insulation 1993

Journal: :IEEE Transactions on Dielectrics and Electrical Insulation 1995

Journal: :Balkan Journal of Electrical and Computer Engineering 2017

Journal: :IEEE Access 2021

In this paper, the results obtained from lab tests on twisted pairs subjected to different voltage waveforms and atmospheric conditions are used propose how modify IEC Std. 60034-18-41. The goal is make standard suitable for More Electrical Aircraft (MEA). show that it initially necessary screen out materials through simple tests. enhancement factors temperature can be modified consider reduced...

2005
Cecilia Forssén Hans Edin

Partial discharges are localized electric discharges that do not bridge the electrodes. For high voltage components measurements of partial discharges are commonly used to diagnose the condition of the insulation system. Traditionally partial discharges are measured at a single frequency of the applied voltage. However the rather newly developed technique of Variable Frequency Phase Resolved Pa...

2005
CECILIA FORSSÉN Cecilia Forssén Hans Edin

Measurements of partial discharges are commonly used to diagnose the insulation system in high voltage components. Traditionally a single fixed frequency of the applied voltage is used for such measurements as in the Phase Resolved Partial Discharge Analysis (PRPDA) technique. With the Variable Frequency Phase Resolved Partial Discharge Analysis (VF-PRPDA) technique the frequency of the applied...

2010
Prasanta Kundu

Insulation used in transformer is mostly oil pressboard insulation. Insulation failure is one of the major causes of catastrophic failure of transformers. It is established that partial discharges (PD) cause insulation degradation and premature failure of insulation. Online monitoring of PDs can reduce the risk of catastrophic failure of transformers. There are different techniques of partial d...

1995
A. Krivda

In this work an overview of automated recognition of partial discharges (PD) is given. The selection of PD patterns, extraction of relevant information for PD recognition and the structure of a data base for PD recognition are discussed. Mathematical methods useful for the design of the data base are examined. Classification methods are interpreted from a geometrical point of view. Some problem...

Journal: :Journal of Physics D: Applied Physics 2014

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