Today’s LiveWire Spotlight examines two NERC’s Lessons Learned where a hidden failure mechanism in a support system manifested itself unexpectedly and resulted in a threat to Bulk Electric System reliability. They address actual incidents that help the industry understand the effect that hidden defects in a substation or Control Center’s support infrastructure may have on Real-time operations.

The loss of multiple transmission facilities and Control Center situational awareness are two of NERC’s top reliability concerns. Severe penalties may be levied if an electric system outage occurs because a Facility Owner/Operator did not act upon these Lessons Learned.