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1. (CA2613440) AUTOMATED PRECISION ALIGNMENT OF DATA IN A UTILITY MONITORING SYSTEM

Office : Canada
Application Number: 2613440 Application Date: 28.06.2006
Publication Number: 2613440 Publication Date: 11.01.2007
Publication Kind : A1
Prior PCT appl.: Application Number:US2006025445 ; Publication Number: Click to see the data
IPC:
H02J 13/00
G01R 19/00
H02J 3/00
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
13
Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3
Circuit arrangements for ac mains or ac distribution networks
CPC:
H02J 13/0006
Y02E 60/74
Y04S 10/30
Applicants: SQUARE D COMPANY
Inventors: BICKEL, JON A.
CARTER, RONALD W.
CURTIS, LARRY E
Priority Data: 11/174,099 01.07.2005 US
Title: (EN) AUTOMATED PRECISION ALIGNMENT OF DATA IN A UTILITY MONITORING SYSTEM
(FR) ALIGNEMENT PRECIS AUTOMATISE DE DONNEES DANS UN SYSTEME DE CONTROLE UTILITAIRE
Abstract:
(EN) A data alignment algorithm that automatically aligns data from multiple monitoring devices to the same zero-crossings at the same point in time. Cycle- by-cycle frequency data is received from each monitoring device and a cross- correlation algorithm is performed to determine a correlation coefficient between a reference monitoring device and another monitoring device. The data of the other monitoring device is shifted by one cycle and another correlation coefficient is calculated by the cross-correlation algorithm. The data of the two monitoring devices is aligned at the point at which the maximum correlation coefficient is calculated or the point at which the correlation coefficient exceeds a threshold value. The clocks of the monitoring devices can also be synchronized at the same point of alignment.


Also published as:
EP1900076CN101213718ES2711960WO/2007/005548