US 11,867,763 B2
Method for monitoring circuit breaker and apparatus and internet of things using the same
Jiayang Ruan, Beijing (CN); Niya Chen, Beijing (CN); and Rongrong Yu, Beijing (CN)
Assigned to ABB SCHWEIZ AG, Baden (CH)
Filed by ABB Schweiz AG, Baden (CH)
Filed on Dec. 29, 2020, as Appl. No. 17/136,116.
Application 17/136,116 is a continuation of application No. PCT/CN2018/099534, filed on Aug. 9, 2018.
Prior Publication US 2021/0116504 A1, Apr. 22, 2021
Int. Cl. G01R 31/327 (2006.01)
CPC G01R 31/3275 (2013.01) 11 Claims
OG exemplary drawing
 
11. A system, including:
a fleet of circuit breakers;
at least one sensor, being configured to measure at least one type of operating condition related signal for each respective circuit breaker in the fleet of circuit breakers during their operation, wherein the measuring of the at least one type of operating condition related signal for each respective circuit breaker in the fleet of circuit breakers are substantially synchronously performed;
a controller, being configured to:
obtain a set of feature data corresponding to data extracted from circuit breakers in the fleet of circuit breakers representing the respective measurements of operating condition related signals for the fleet of circuit breakers,
perform cluster analysis of the set of feature data obtained from the fleet of circuit breakers based on grouping the fleet of circuit breakers into one or more clusters and based on a similarity threshold,
identify an abnormally operating circuit breaker from the other circuit breakers in the fleet of circuit breakers based on the cluster analysis,
wherein the abnormally operating circuit breaker is identified by comparing the feature data of the abnormal circuit breaker with the feature data of the other circuit breakers in a cluster of the one or more clusters; and
generate a signal indicating a condition of the fleet of circuit breakers based on a cluster number resulted from the performance of a cluster analysis on the fleet of circuit breakers,
wherein the signal indicates an abnormal condition of the fleet of circuit breakers where the cluster number is above one, and wherein the signal's indication of the abnormal condition includes identifying the abnormally operating circuit breaker as abnormal where the set of feature data representing its operating condition related signal was grouped in a cluster having a less number of feature data than at least one of a rest of the one or more clusters; and
a server, being configured to receive the signal indicating the condition of the fleet of circuit breakers;
wherein the cluster number is representative of the number of feature data in the set of feature data;
wherein the at least one type of operating condition related signal is selected from the group consisting of a travel curve signal, a vibration signal, a coil current signal, a motor current signal, and a PD signal of the respective circuit breaker.