A synchronized current-comparator-based power bridge for calibrating analog merging units

Auteur	Rechercher : Djokic, Branislav¹; Rechercher : Parks, Harold¹
Affiliation	Conseil national de recherches du Canada. Science des mesures et étalons
Format	Texte, Article
Conférence	Conference on Precision Electromagnetic Measurements, July 8-13, 2018, Paris, France
Sujet	instrument transformers; merging unit; calibration; power bridge; current comparator; measurement uncertainty
Résumé	A synchronized current-comparator-based power bridge for calibrating analog merging units at power frequencies of 60 Hz and 50 Hz is described. Analog merging units take analog signals from instrument transformers, convert them into digital form, pack the sampled values into Ethernet frames conforming to the IEC 61850-9-2 LE specification and stream the frames to other equipment in a digital substation for further processing. Since the sampled values are used for protection and metering, the merging units need to be calibrated. The expanded uncertainties (k=2) of the described calibration system are estimated to be better than 30 11A/A for magnitude and 60 µrad for phase.
Date de publication	2018-07
Maison d’édition	The Conference
Dans	CPEM 2018.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro NPARC	23004094
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	55e21d30-0dda-4908-b8b3-66aa0c764d22
Enregistrement créé	2018-09-27
Enregistrement modifié	2021-01-21