NERC Timing Requirements Flashcards
BA - CPS 1
Annual (rolling) average of the clock-minute averages
BA - CPS 2
Monthly clock ten-minute periods
BA - Disturbance Recovery Period
15 minutes (ACE)
BA - Contingency Reserve qualification requirement
Deployable (responds) within 10 minutes
BA - Contingency Reserve Recovery Period
90 minutes
BA - Governor not in Service
30 minutes of discovery
BA - shall calculate Primary Inadvertent Interchange hourly, accumulative
50 minutes after each hour
BA - that is unable to calculate ACE
More than 30 minutes it shall notify its Reliability Coordinator
BA - DCS source data
For a time period of two minutes prior to thirty minutes after the identified Disturbance
BA - Restoration of Operating Reserve (WECC)
60 minutes
TOP and BA - BES Cyber Asset
Would cause an impact to reliability within 15 minutes
Responsible Entity - has an alert for unauthorized access to Physical Access Control Systems
Alerts within 15 minutes
RC, TOP and BA - Failure of Interpersonal Communication capability
Shall notify within 60 minutes of the detection of a failure of its Interpersonal Communication capability that lasts 30 minutes or longer.
BA - Loss of resources covered by an energy agreement shall ensure that a Request for Interchange (RFI) is submitted no more than ____________ beyond the resource loss
60 minutes
RC - Shall have clear decision-making authority to act and to direct actions to preserve integrity and reliability without delay, but no longer than _________.
30 Minutes
Relieve IROL violations in no longer than _____________. (ERCOT)
30 minutes
RC - Shall approve or deny a request within __________ of receiving the request for unscheduled flow transmission relief from the Transmission Operator of a Qualified Transfer Path (WECC)
5 minutes
RC - Shall perform a Real-Time Assessment at least once every _____________.
30 minutes
TOP - Triggered record lengths of at least three minutes for off nominal frequency trigger set at: (1/3)
Eastern Interconnection: <59.75 Hz >61.0 Hz
Western Interconnection: <59.55 Hz >61.0 Hz
ERCOT Interconnection: <59.35 Hz >61.0 Hz
Hydro-Quebec Interconnection: <58.55Hz. >61.5 Hz
TOP - Under-voltage trigger set no lower than 85 percent of normal operating voltage for a duration of ___________. (3/3)
5 seconds
TOP - Set relays to allow the transformer to be operated at an overload level of at least 150% of the maximum applicable nameplate rating, or 115% of the highest operator established emergency transformer rating, whichever is greater, for at least _________ to allow an operator to respond.
15 minutes
TOP and BA - shall notify its Reliability Coordinator and known impacted interconnected entities of all planned outages, and unplanned outages of 30 ____________ or more, for telemetering and control equipment, monitoring and assessment capabilities, and associated communication channels between the affected entities.
30 minutes
TOP - Shall ensure that a Real-time Assessment is performed at least once every ____________.
30 minutes
TOP - enters an unknown operating state (i.e. any state for which valid operating limits have not been determined). It will be considered to be in an emergency and shall restore operations to respect proven reliable power system limits within ____________.
30 minutes
