If the dashboard is not displaying correctly please open this page in Chrome or Microsoft Edge
About This Metric
These metrics evolved from the original ALR4-1 metric for correct protection system operations and now illustrate a normalized count on a per element basis of AC transmission element outages. Shown here are the metric ALR6-13 for outages that were initiated by Failed AC Substation Equipment and the metric ALR6-14 for outages that were initiated by Failed AC Circuit Equipment. The ALR6-13 metric covers automatic outages caused by the failure of AC substation equipment that are inside the substation perimeter including transformers and circuit breakers but excluding protection system equipment. The ALR6-14 metric covers automatic outages related to the failure of AC circuit equipment such as overhead or underground equipment outside the substation perimeter. These metrics are all related to the non-weather related initiating cause codes for automatic outages of AC circuits and transformers operated 200 kV and above.
home | account log-in/register | legal and privacy/trademark policy | site map | careers | contact us
Atlanta Office | 3353 Peachtree Road NE, Suite 600 North Tower, Atlanta, GA 30326 | 404-446-2560 Washington Office | 1325 G Street NW, Suite 600, Washington, DC 20005| 202-400-3000
Copyright 2021 North American Electric Reliability Corporation. All rights reserved.