Abstract: The present specification relates to a power grid electric transient detector, a method of detecting a power grid electric transient, and an electric provisioning system detecting the power grid electric load. The power grid electric transient is estimated by receiving an electric parameter for electricity received from a power grid at a consuming facility. A digital filter extracts transient of the electric parameter. A processor analyzes the transients of the electric parameter and generates a power grid performance index based on the analyzed transient of the electric parameter.
Type:
Grant
Filed:
May 3, 2018
Date of Patent:
February 16, 2021
Assignees:
3R VALO LIMITED PARTNERSHIP, HYDRO QUEBEC
Abstract: The present system and method allow non-intrusive estimation of a number of electronic thermostats in an area, where each electronic thermostat controls at least one thermal load. The system comprises a power sampler, an analog/digital converter and a processing unit. The power sampler collects, at one electric entry for the area, a finite sequence of samples of aggregated electric power consumed by the area. The analog/digital converter converts the samples of aggregated electric power into discrete-time samples. The processing unit converts the finite sequence of discrete-time samples of aggregated electric power into a discrete-frequency representation using a Discrete Fourier Transform (DFT) to identify dominant frequency components and analyze the dominant frequency components to estimate a commutating frequency of the electronic thermostats.