US 12,316,112 B2
Breaker control units and related systems and methods
Ritwik Chowdhury, Charlotte, NC (US); Dale S. Finney, Little Bras D'or (CA); and Normann Fischer, Colfax, WA (US)
Assigned to Schweitzer Engineering Laboratories, Inc., Pullman, WA (US)
Filed by Schweitzer Engineering Laboratories, Inc., Pullman, WA (US)
Filed on Jul. 12, 2022, as Appl. No. 17/812,041.
Prior Publication US 2024/0022112 A1, Jan. 18, 2024
Int. Cl. H02J 13/00 (2006.01); H02H 1/00 (2006.01)
CPC H02J 13/00036 (2020.01) [H02H 1/0061 (2013.01); H02J 13/00002 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A distributed supervisory system to monitor an electric power system, the distributed supervisory system comprising:
a breaker control unit (BCU) configured, the BCU comprising:
a circuit breaker (CB) output;
an electrical parameter interface to monitor at least one electrical parameter of the electric power system;
a remote input;
wherein the BCU is configured:
to be located in a breaker cabinet, and
to coordinate switching of the CB through the CB output to correspond to a predetermined point-on-wave value at a time of switching based on a signal received via the remote input; and
an intelligent electronic device (IED) configured to communicate with the BCU via the remote input, the IED configured:
to calculate an estimate of at least one of trapped charge and residual flux,
generate the signal to cause the CB to switch at a specific point-on-wave value,
transmit the signal to the BCU via the remote input.