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1. US20210231716 - APPARATUS, METHODS AND COMPUTER-READABLE MEDIUM FOR EFFICIENT ELECTRICAL GRID MEASUREMENTS

Office
United States of America
Application Number 16744805
Application Date 16.01.2020
Publication Number 20210231716
Publication Date 29.07.2021
Publication Kind A1
IPC
G01R 23/02
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
23Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
02Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
CPC
G01R 23/02
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
23Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
02Arrangements for measuring frequency, e.g. pulse repetition rate
Applicants University of Tennessee Research Foundation
UT-Battelle (ORNL)
Inventors Lingwei Zhan
Bailu Xiao
He Yin
Fuhua Li
Wenxuan Yao
Zhi Li
Thomas King
Yilu Liu
Title
(EN) APPARATUS, METHODS AND COMPUTER-READABLE MEDIUM FOR EFFICIENT ELECTRICAL GRID MEASUREMENTS
Abstract
(EN)

Respective phasor values are recursively computed from respective ones of a series of signal samples for a node of a power system such that each phasor value is computed from a previously computed phasor value. Frequency values are recursively computed from the phasor values for respective ones of the signal samples. Recursive computing of frequency values may include computing respective phase angle values from respective ones of the phasor values, recursively computing coefficient values for a polynomial that fits the phase angle values, and recursively computing the frequency values from the coefficient values. The samples may be generated at a sampling rate and the phasor values and the frequency values may be produced at a rate that is the same as the sampling rate. Embodiments may provide methods, apparatus and computer readable media that implement such operations.

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