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1. (WO2019048537) METHOD AND APPARATUS FOR CURRENT MEASUREMENT IN POLYPHASE ELECTRICITY SUPPLY
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Pub. No.: WO/2019/048537 International Application No.: PCT/EP2018/073984
Publication Date: 14.03.2019 International Filing Date: 06.09.2018
IPC:
G01R 35/04 (2006.01) ,G01R 21/133 (2006.01) ,G01R 35/02 (2006.01) ,G01R 19/25 (2006.01) ,G01R 15/20 (2006.01) ,G01R 19/00 (2006.01) ,G01R 21/14 (2006.01) ,G01R 19/32 (2006.01)
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
35
Testing or calibrating of apparatus covered by the other groups of this subclass
04
of instruments for measuring time integral of power or current
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
21
Arrangements for measuring electric power or power factor
133
by using digital technique
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
35
Testing or calibrating of apparatus covered by the other groups of this subclass
02
of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
19
Arrangements for measuring currents or voltages or for indicating presence or sign thereof
25
using digital measurement techniques
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
15
Details of measuring arrangements of the types provided for in groups G01R17/-G01R29/, G01R33/-G01R33/26176
14
Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
20
using galvano-magnetic devices, e.g. Hall-effect devices
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
19
Arrangements for measuring currents or voltages or for indicating presence or sign thereof
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
21
Arrangements for measuring electric power or power factor
14
Compensating for temperature change
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
19
Arrangements for measuring currents or voltages or for indicating presence or sign thereof
32
Compensating for temperature change
Applicants:
ANALOG DEVICES GLOBAL UNLIMITED COMPANY; 3rd Floor Par La Ville Place 14 Par La Ville Road Hamilton, BM
Inventors:
HURWITZ, Jonathan; GB
HOLLAND, William; GB
DANESH, Seyed; GB
Agent:
WITHERS & ROGERS LLP; 4 More London Riverside London Greater London SE1 2AU, GB
HORLER, Philip; GB
Priority Data:
15/700,86711.09.2017US
Title (EN) METHOD AND APPARATUS FOR CURRENT MEASUREMENT IN POLYPHASE ELECTRICITY SUPPLY
(FR) PROCÉDÉ ET APPAREIL DE MESURE DE COURANT DANS UNE ALIMENTATION ÉLECTRIQUE POLYPHASÉE
Abstract:
(EN) A measurement circuit is arranged to make several measurements, either at different times or in respect of different frequency components of currents measured by current sensors in respective phases of a multiphase supply system. The measurments are then used to correct for discrepencies in the transfer function of the sensors.
(FR) Un circuit de mesure est conçu pour effectuer plusieurs mesures, soit à des instants différents, soit par rapport à différentes composantes de fréquence de courants mesurés par des capteurs de courant dans des phases respectives d'un système d'alimentation polyphasé. Les mesures sont ensuite utilisées pour corriger des écarts dans la fonction de transfert des capteurs.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)