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

Claim 6:
7. A merging unit to obtain samples from an electric power delivery system and in communication with an intelligent electronic device (IED), 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 the 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;

a communication interface in communication with the IED for transmission of the created communication packet and receipt of the response communication from the IED.