Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Should SEL relays be polled using SEL Fast Meter protocol or DNP3?

April 26, 2017dnp3 fast meter Polled Protocol relays SeL

0

Posted

Should SEL relays be polled using SEL Fast Meter protocol or DNP3?

1 Answer

0

Posted

The SMP Gateway supports both protocols and each has its advantages and disadvantages. The primary advantage of DNP3 is that it is a standard protocol, and that millisecond time tags are available for events. However, a DNP port cannot be used as a standard relay maintenance port and a second connection is required for that purpose. The main advantage of Fast Meter is that it is possible to interleave maintenance (ASCII) and Fast Meter activities on the same port. However, on most SEL relays it is impossible to obtain detailed event time-tag information using the Fast Meter protocol.