The NAGF is actively engaged in a number of tactical and strategic activities with FERC and NERC which provide the opportunity to convey the technical capabilities, technical constraints, and economic impacts of Reliability Standards and proposed regulatory changes on the generator sector.
2025
LL20250901: IBR Control Interactions and Oscillatory Events
2024
LL20240501: Incorrect IBR Primary Frequency Response Logic Caused Negative ACE
2023
LL20231102: Wind Turbine Generation Loss due to Unexpected and Insufficient Ride-through Performance
LL20230701: Weathering the Storm – System Hardening
LL20230401: Combustion Turbine Anti-Icing Control Strategy
2022
LL20220701: Forecasted High Winds
LL20220402: Islanding and Insufficient Primary Frequency Response Resulted in Unintended UFLS
LL20220401: Distributed Energy Resource Performance Characteristics during a Disturbance
2021
LL20210501: Interconnection Oscillation Disturbances
LL20210401: Controlled Islanding due to Wildfire Event
2019
LL20191201: Moisture Intrusion in Hermetically Sealed Metering Current Transformer
LL20190202: Substation Fires – Working with First Responders
LL20190201: Current Drone Usage
2018
LL20181203: Cascading Analysis Identifies Need for Pre-Contingent Load Shed
2017
LL20170701: Loss of Wind Turbines due to Transient Voltage Disturbances on the Bulk Transmission System
LL20170601: Generator Trip While Performing Frequency Response
LL20170401: Dispatched Reduction in Generation Output Causes Frequency Deviation
2015
LL20151203: Human Error Leads to Evacuation of Primary Control Room
LL20150602: Generator Distributed Control System Impact on Automatic Voltage Regulators
2014
LL20141203: Loss of Multiple Generators Due to Control Air Problems
LL20140301: Turbine Combustor Lean Blowout on Large-Frame Combustion Turbines
LL20140202: A Generating Station Ground Mat Problem Led to the Trip of Two Generating Units (2000 MW)
2013
LL20130402: Lack of Separation for Critical Control Power Supply Leads to loss of Multiple Units at a Power Station
2012
LL20120903: Winter Storm Inlet Air Duct Icing
LL20120606: Alarm Interpretation Leads to Generator Stator Coil Failure
2011
LL20111002: Plant Fuel Switching and Cold Weather
LL20111001: Plant Instrument and Sensing Equipment Freezing Due to Heat Trace and Insulation Failures
LL20110903: Generating Unit Temperature Design Parameters and Extreme Winter Conditions
LL20110902: Adequate Maintenance and Inspection of Generator Freeze Protection
LL20110705: Sub-Synchronous Interaction
LL20110503: Area Control Error Event
LL20110502: Generator Plant Gas Supply – Event #2
LL20110501: Generator Plant Gas Supply – Event #1
2010
LL20101203: Protection Shields for Generator Step-up Transformers
LL20101201: Generating Station Auxiliary Power Bus Undervoltage
LL20100601: Control Labeling of Generator Voltage Regulators
