Results 101 to 110 of about 177 (121)

Wavelet-based arcing signal source localization algorithm using a compact multi-square microstrip antenna. [PDF]

Sci Rep
Amirruddin M, Adzman MR, Mohd Affendi NA, Isa M, Idris MH, Abd Halim S, Lehtonen M.   +6 more
europepmc   +1 more source

Application of Pathfinding Algorithms in Partial Discharge Localization in Power Transformers. [PDF]

Sensors (Basel)
Beura CP, Wolters J, Tenbohlen S.
europepmc   +1 more source

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Comparison of Sensitivity Between UHF Method and IEC 60270 for Onsite Calibration in Various GIS

IEEE Transactions on Power Delivery, 2006
It is more important to obtain the sensitivity line, which is defined as a correlation between the ultra-high-frequency (UHF) signal (mV) and apparent charge (pC), for onsite calibration regarding partial discharge (PD). Synchronous measurement of the UHF method and IEC 60270 enables us to obtain the sensitivity line and to estimate the apparent charge
T Hoshino, M Hanai
exaly   +2 more sources

Fundamental differences of the PD measurement according to IEC 60270 and in UHF range

2008 International Conference on Condition Monitoring and Diagnosis, 2008
PD measurements in the UHF frequency range are an important tool for diagnostic at GIS. A general correlation between the measurement according to IEC standard 60270 and measurements in the UHF range is not possible. By the use of a ldquosensitivity checkrdquo the quality of the UHF measuring system is verified at GIS.
Stefan Tenbohlen
exaly   +2 more sources

Comparative study of IEC 60270 compliant instruments for partial discharge pattern acquisition

2016 Petroleum and Chemical Industry Technical Conference (PCIC), 2016
The petrochemical industry considers offline partial discharge (PD) measurement an important quality assessment for new medium voltage motor and generator stator windings. A recent edition of API 541 requires an instrument compliant with IEC 60270 for the measurement of PD on sacrificial stator coils, and proposes 100 pC (pico-Coulombs) for guidance on
Saeed Ul Haq, Meredith K. W. Stranges, Barry Wood   +2 more
exaly   +2 more sources

What can go wrong during stator coil partial discharge measurements according to IEC 60270?

2014 Petroleum and Chemical Industry Conference Europe, 2014
The available literature on partial discharge (PD) analysis suggests that measurements should be performed at higher frequency bandwidth than the conventional IEC 60270 methods, to enhance capability for detection of stator coil defects. In an energized test object, electrical disturbances or noise can strongly influence the observed PD magnitude ...
Saeed Ul Haq, Luis H. A. Teran, Meredith K. W. Stranges, William Veerkamp   +3 more
exaly   +2 more sources

Comparison of IEC 60270 and RF partial discharge detection in an electromagnetic noise-free environment at differing pressures

2012 IEEE International Symposium on Electrical Insulation, 2012
Measuring partial discharge according to IEC60270 is a well established and widely accepted method. Unfortunately it presents some limitations especially when it is necessary to monitor the system under load conditions and when the localization of the discharge sources is demanded. To overcome these problems, other techniques have been developed in the
Ian Cotton
exaly   +2 more sources

Review of IEC 60270 Regarding PD Measurements Under DC Voltage

2024 10th International Conference on Condition Monitoring and Diagnosis (CMD)
Uwe Schichler
exaly   +2 more sources

Apparent Charge Measurement According to IEC 60270. How is it Done?

IEEE Electrical Insulation Magazine
Mathieu Lachance
exaly   +2 more sources

Guide to Changes Made in Edition 4 of IEC 60270, Charge-Based Partial Discharge Measurements

IEEE Electrical Insulation Magazine
Glenn Behrmann, Michael Muhr
exaly   +2 more sources