Method performed by a differential relaying protection apparatus

A differential relaying protection apparatus, comprising:

• a clock module configured to create a first clock and a second clock, wherein the first clock and the second clock run independently;
• a transceiver module;
• and
• a processing module configured to:
• obtain a first plurality of sample data having a first plurality of sample counts, wherein the first plurality of sample counts are associated with the first clock;
• map the first plurality of sample data having the first plurality of sample counts to a second plurality of sample data having a second plurality of sample counts, wherein the second plurality of sample counts are associated with the second clock;
• receive, from one or more other differential relaying protection apparatuses, a plurality of sample data having the second plurality of sample counts;
• determine a differential current based on the second plurality of sample data and the plurality of sample data;
• and
• determine whether a circuit fault occurs based on a value of the differential current.

A differential relaying protection apparatus, comprising:

• a first clock module configured to create a first clock;
• a second clock module configured to create a second clock, wherein the first clock and the second clock run independently;
• a transceiver module;
• and
• a processing module configured to:
• obtain a first plurality of sample data having a first plurality of sample counts, wherein the first plurality of sample counts are associated with the first clock;
• map the first plurality of sample data having the first plurality of sample counts to a second plurality of sample data having a second plurality of sample counts, wherein the second plurality of sample counts are associated with the second clock in the differential relaying protection apparatus;
• receive, from one or more other differential relaying protection apparatuses, a plurality of sample data having the second plurality of sample counts;
• determine a differential current based on the second plurality of sample data and the plurality of sample data;
• and
• determine whether a circuit fault occurs based on a value of the differential current.