Results 1 to 10 of about 9,820 (150)

New Synthetic Partial Discharge Calibrator for Qualification of Partial Discharge Analyzers for Insulation Diagnosis of HVDC and HVAC Grids [PDF]

Sensors, 2023
A synthetic partial discharge (PD) calibrator has been developed to qualify PD analyzers used for insulation diagnosis of HVAC and HVDC grids including cable systems, AIS, GIS, GIL, power transformers, and HVDC converters.
Abderrahim Khamlichi, Fernando Garnacho, Pascual Simón   +2 more
doaj   +2 more sources

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

Partial discharge calibrator of a cavity inside high-voltage insulator

Open Engineering, 2022
This article displayed the method of partial discharge (PD) measurement in high-voltage insulator and calibrating the effective element (capacitor) to enhance the PD signal.
Hamoodi Ali N., Hamoodi Safwan A., Mohammed Rasha A.   +2 more
doaj   +1 more source

Precise calibration of LIGO test mass actuators using photon radiation pressure [PDF]

, 1994
Precise calibration of kilometer-scale interferometric gravitational wave detectors is crucial for source localization and waveform reconstruction. A technique that uses the radiation pressure of a power-modulated auxiliary laser to induce calibrated ...
Goetz, E., Kalmus, P., Erickson, S., Savage Jr., R. L., Gonzalez, G., Kawabe, K., Landry, M., Marka, S., O'Reilly, B., Riles, K., Sigg, D., Willems, P.   +11 more
core   +2 more sources

Setup of standard PD calibrator and its uncertainties [PDF]

Journal of Electrical Engineering and Technology, 2011
The present paper describes the setup of standard partial discharge calibrator for measuring partial discharge and estimating uncertainties. The standard PD calibrator was designed and set up, consisting of a digital pulse generator, capacitor modules, and a digital oscilloscope controlled by software developed in the laboratory.
Kwang-Hwa Kim, Sang-Hwa Yi, Heun-Jin Lee, Dong-Sik Kang   +3 more
openaire   +1 more source

Partial discharge pulse propagation in power cable and partial discharge monitoring system [PDF]

, 2014
Partial discharge (PD) based condition monitoring has been widely applied to power cables. However, difficulties in interpretation of measurement results (location and criticality) remain to be tackled.
Dong, Xiang, Hepburn, Donald, Peers, Graham, Sheng, Bojie, Tang, Zeyang, Wenjun, Zhou, Zhou, Chengke   +6 more
core   +1 more source

Blazars in the Fermi Era: The OVRO 40-m Telescope Monitoring Program [PDF]

, 2010
The Large Area Telescope (LAT) aboard the Fermi Gamma-ray Space Telescope provides an unprecedented opportunity to study gamma-ray blazars. To capitalize on this opportunity, beginning in late 2007, about a year before the start of LAT science operations,
Abdo, Abdo, Abdo, Acciari, Aharonian, Aller, Aller, Angelakis, Anthony C. S. Readhead, Atwood, Baars, Blandford, Blandford, Blandford, Dennett-Thorpe, Dermer, Diana M. Worrall, Edelson, Emmanouil Angelakis, Fuhrmann, Garret Cotter, Gregory B. Taylor, Górski, Healey, J. Anton Zensus, Jauncey, Jorstad, Joseph L. Richards, Katy Lancaster, Kedziora-Chudczer, Keith Grainge, Lars Fuhrmann, Lawrence C. Weintraub, Lovell, Mannheim, Mark Birkinshaw, Martin C. Shepherd, Matthew A. Stevenson, Michael S. Shaw, Oliver G. King, Ricardo Bustos, Rickett, Rodrigo Reeves, Roger W. Romani, Rohlfs, Stephen E. Healey, Timothy J. Pearson, Vasiliki Pavlidou, Venters, Walter Max-Moerbeck   +49 more
core   +2 more sources

A Physical Calibrator for Partial Discharge Meters

Energies, 2019
This article offers an alternative method of calibrating partial discharge meters for research and teaching purposes. Most current modern calibrators are implemented as precise voltage pulse sources with a coupling capacitor.
Michal Krbal, Ludek Pelikan, Jaroslav Stepanek, Jaroslava Orsagova, Iraida Kolcunova   +4 more
doaj   +1 more source

The Palomar Testbed Interferometer Calibrator Catalog [PDF]

, 2007
The Palomar Testbed Interferometer (PTI) archive of observations between 1998 and 2005 is examined for objects appropriate for calibration of optical long-baseline interferometer observations - stars that are predictably point-like and single ...
A. F. Boden, Alcaino G., Allen D. A., Appenzeller I., Ardeberg A., Arellano Ferro A., Argue A. N., Argue A. N., B. F. Lane, Baize P., Bartkevicius A., Bartkowiak A., Bertaud C., Blaauw A., Blanco C., Bouigue R., Bouigue R., Bouigue R., Burnichon M. L., Cameron R. C., Celis S., L., Cousins A. W. J., Cousins A. W. J., Cousins A. W. J., Cousins A. W. J., Cousins A. W. J., Cousins A. W. J., Cousins A. W. J., Cousins A. W. J., Cousins A. W. J., Cousins A. W. J., Cousins A. W. J., Cousins A. W. J., Crawford D. L., D. R. Ciardi, Danziger I. J., Duflot M., Duquennoy A., Echevarria J., Eggen O. J., Epps E. A., Erro B. I., Evans D. S., Fabregat J., Fernie J. D., Franco G. A. P., G. T. van Belle, G. van Belle, Garmany C. D., Gascoigne S. C. B., Glass I. S., Glass I. S., Glebocki R., Gray R. O., Gronbech B., Gronbech B., Gutierrez-Moreno A., Haggkvist L., Haggkvist L., Haggkvist L., Haggkvist L., Haggkvist L., Harmanec P., Haug U., Haug U., Haupt H. F., Heck A., Heck A., Henden A. A., Hilditch R. W., Hill G., Hoag A. A., Hogg A. R., Iriarte B., Iriarte B., Iriarte B., J. Coyne, Jennens P. A., Jerzykiewicz M., Johansen K. T., Johnson H. L., Johnson H. L., Johnson H. L., Jones D. H. P., Jordi C., K. M. Rykoski, Kilkenny D., Kilkenny D., Kilkenny D., Knude J. K., Knude J. K., Kornilov V. G., Kozok J. R., Kubiak M., Kubinec W. R., Lake R., Lake R., Lake R., Lake R., Lake R., Lindgren H., Ljunggren B., Ljunggren B., Ljunggren B., Loden K., M. J. Creech‐Eakman, Malmquist K. G., Manfroid J., Marsakov V. A., Marsakov V. A., Mendoza E. E., Mendoza E. E., Mendoza E. E., Mendoza E. E., Mendoza E. E., Mendoza E. E., Millis R. L., Moreno H., Nakagiri M., Neckel H., Nekrasova S. V., Nicolet B., Niconov V. B., Nikrasova V., Oblak E., Oblak E., Oja T., Oja T., Oja T., Oja T., Oja T., Oja T., Olsen E. H., Olsen E. H., Olsen E. H., Olsen E. H., Olsen E. H., Olsen E. H., Oosterhoff P. T., Pena J. H., Penston M. J., Perryman M. A. C., Pfleiderer J., Piirola V., Przybylski A., R. L. Akeson, R. R. Thompson, Reglero V., Reglero V., Rufener F., Rybka E., Schuster W. J., Schuster W. J., Schuster W. J., Serkowski K., Shobbrook R. R., Sjogren U., Stobie R. S., Stokes N. R., Stokes N. R., Stoy R. H., Szabados L., Szabados L., The PTI Collaboration, Tifft W. G., Turon C., Wesselink T., Westerlund B. E., Westin T. N. G., Wickramasinghe D. T., Wramdemark S., Zdanavicius K.   +171 more
core   +3 more sources

A dual output polarimeter devoted to the study of the Cosmic Microwave Background [PDF]

, 2003
We have developed a correlation radiometer at 33 GHz devoted to the search for residual polarization of the Cosmic Microwave Background (CMB). The two instruments`s outputs are linear combination of two Stokes Parameters (Q and U or U and V).
Boella, G., Cavaliere, F., Gervasi, M., Grossetti, G., Passerini, A., Sironi, G., Tartari, A., Zannoni, M.   +7 more
core   +4 more sources