About This Metric
Total Automatic AC Transmission Outages Initiated by Failed Protection System Equipment data set are derived from TADS definitions and are limited only to 200kV and above AC Transmission Circuits and Transformers with 200 kV and above low-side voltage. This metric provides an indication of the relative protection system equipment performance, specifically the AC Transmission Element outage rate for both momentary and sustained outages initiated by Failed Protection System Equipment.
Total Automatic AC Transmission Outages Initiated by Human Error as well is derived from TADS definitions and are limited only to 200kV and above AC Transmission Circuits and Transformers with 200 kV and above low-side voltage. It provides an indication of the relative human factor performance, specifically the AC Transmission Element outage rate for momentary and sustained outages initiated by Human Error. Both; Failed Protection System Equipment and Human Error are the leading causes for initiating automatic transmission system outages.
Metric Definition Document
