Today’s LiveWire Spotlight evaluates two NERC Lessons Learned providing “teachable moments” where a substation component or system failed unexpectedly and resulted in a threat to Bulk Electric System reliability. The documents examine actual events that help the industry understand the effect that device defects may have on a substation, even if all other systems are functioning perfectly.

Substation losses or the inability to monitor them are among NERC’s top reliability concerns. Severe penalties may be levied if an electric system outage occurs, and it is found that an Operator did not act upon these Lessons Learned.