US 12,078,548 B2
Electrical apparatus thermal monitoring
Venanzio Ferraro, Grenoble (FR); Massimo Secci, Savona (IT); and Diego Alberto, Corenc (FR)
Assigned to Schneider Electric Industries SAS, Rueil Malmaison (FR)
Filed by Schneider Electric Industries SAS, Rueil-Malmaison (FR)
Filed on May 6, 2021, as Appl. No. 17/313,290.
Claims priority of application No. 20174518 (EP), filed on May 13, 2020.
Prior Publication US 2021/0356328 A1, Nov. 18, 2021
Int. Cl. G01K 1/02 (2021.01); G01K 1/024 (2021.01); G01K 1/14 (2021.01); G06N 5/02 (2023.01); H02J 13/00 (2006.01)
CPC G01K 1/02 (2013.01) [G01K 1/024 (2013.01); G01K 1/14 (2013.01); G06N 5/02 (2013.01); H02J 13/00002 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A method for monitoring the condition of an electrical apparatus based on an estimated temperature of a conductor in the electrical apparatus, the method comprising:
receiving a measured temperature value from a first thermal sensor disposed in the electrical apparatus and configured to sense temperature at a location separated from the conductor by an insulator, wherein the first thermal sensor is embedded in a bushing;
generating an estimated conductor temperature value based on applying a non-linear model to the measured temperature value, the estimated conductor measurement value being representative of the temperature of the conductor; and
monitoring the condition of the electrical apparatus based on the estimated conductor temperature.