Patent ID: 11949222
Assignee: SCHWEITZER ENGINEERING LABORATORIES, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A system for electric power delivery system monitoring, comprising:
a merging unit comprising:
a sampling circuit in electrical communication with the electric power delivery system for obtaining electric power system samples;
a processor operably coupled to the sampling circuit, wherein the processor is configured to:
obtain a sample of the electric power delivery system at a sampling time;
determine a sample time offset value related to a latency between sampling the electric power delivery system and receipt of a communication from the merging unit to an intelligent electronic device (IED);
create a communication packet including the sample and the sample time offset value;
determine a receipt of a response communication from the IED; and,
calculate a communication delay using the receipt of the response communication from the IED; and,

a communication interface in operable communication with the processor for transmission of the created communication packet to the IED; and,

an IED in communication with the merging unit for monitoring the electric power delivery system, comprising:
a communication interface in communication with the merging unit for receiving the created communication packet and transmitting the response communication;
a time alignment module for aligning electric power system samples using sample time offset values associated with the samples; and
a protective action module for determining a protective action for the electric power delivery system using the time aligned electric power system samples.