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Lessons Learned Series

image_The only mistake in life is the lesson not learned. - Albert EinsteinThis series of modules is used to help System Operators learn from the errors, mistakes and miscommunications that may transpire during the day-to-day operations. These Lessons were reported by companies to help identify and correct problems that may be identified in all aspects of system operations. The contents of this module were derived from the North American Electric Reliability Corporations Event Analysis Reports.

The Lessons Learned that are reported or submitted to NERC are broken down into the following categories:

  • Training and Personnel
  • Transmission Facilities
  • Relaying and Protection Systems
  • Generation Facilities
  • Communications
  • Bulk-Power System Operations
  • Procedural Controls
  • Facilities, Design, Commission, and Maintenance

Each lesson learned module includes the following elements associated with the system event:
  • Identifies the applicable NERC Functions
  • Describes the Event
  • Corrective Actions Taken
  • Lessons Learned
  • Thinking for the Future



Lessons Learned Series 1

Each lesson learned module includes all of the following elements: image_Your best teacher is your last mistake.

The Series 1 module covers the following lessons learned events:

  • Backup Control Center Operation and Training
  • Failover Configuration Leads to Loss of EMS
  • Human Error Leads to Evacuation of Primary Control Room
  • Severe Flooding Damages Transformer Substations
  • Tie Line Relay Coordination

NERC Continuing Education Hours:

TOTAL: 1.5 CEHs
Standards: 0.0 CEHs
Ops Topics: 1.5 CEHs
Sim: 0.0 CEHs

Course Overview || Registration


Registration Fees: $45.00




Lessons Learned Series 2

Each lesson learned module includes all of the following elements:image_Lessons Learned: recognize mistakes, observe what works, document them, share them

  • Identifies the applicable NERC Functions
  • Describes the Event
  • Corrective Actions Taken
  • Lessons Learned
  • Thinking for the Future

The Series 2 module covers the following lessons learned events:

  • Transmission Relaying – Relay Setting Issue
  • Dispatched Reduction in Generation Output Causes Frequency Deviation
  • Loss of SCADA Operating and Monitoring Ability
  • Slow Circuit Breaker Operation Due to Lubrication Issues

NERC Continuing Education Hours:

TOTAL: 1.5 CEHs
Standards: 0.0 CEHs
Ops Topics: 1.5 CEHs
Sim: 0.0 CEHs

Course Overview || Registration


Registration Fees: $45.00




Lessons Learned Series 3

Each lesson learned module includes all of the following elements: image_Those who do not learn from history are doomed to repeat it. - George Santayana

  • Identifies the applicable NERC Functions
  • Describes the Event
  • Corrective Actions Taken
  • Lessons Learned
  • Thinking for the Future

The Series 3 module covers the following lessons learned events:

  • Generator Trip While Performing Frequency Response
  • Loss of Wind Turbines due to Transient Voltage Disturbances
  • Auxiliary Power Loss to STATCOM Leads to UVLS Operation
  • Inadequate Battery Configuration Management Damaged a Generating Station and Tripped an HVDC Conversion Station

NERC Continuing Education Hours:

TOTAL: 1.5 CEHs
Standards: 0.0 CEHs
Ops Topics: 1.5 CEHs
Sim: 0.0 CEHs

Course Overview || Registration


Registration Fees: $45.00