Patent ID: 11927610
Assignee: SCHWEITZER ENGINEERING LABORATORIES, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC G

Claim 0:
1. A system, comprising:
a memory; and
a processor operatively coupled to the memory, wherein the processor is configured to:
obtain electrical measurements of a power system;
determine a scaled energy value of a first set of the electrical measurements that is scaled with respect to a second set of electrical measurements;
determine that a potential ringdown event occurred by comparing the scaled energy value of the first set of electrical measurements to a threshold energy value;
determining a scaled error value by comparing the electrical measurements to a ringdown model;
determine that the potential ringdown event is a confirmed ringdown event by comparing the scaled error value to a threshold error value;
generate one or more mode estimates from the confirmed ringdown event; and
send a signal indicating the one or more mode estimates; and

a device to receive the mode estimates to determine that the power system has exceeded a reliability threshold and to open a circuit breaker to disconnect a portion of the power system.