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NERC questions with correct answers
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Requirement for reviewing MSSC CORRECT ANSWER annually BAL default recovery period for recovery from MSSC CORRECT ANSWER 15 min BAL 2 methods of complying with DCS CORRECT ANSWER RSG ACE BA ACE BAL Contingency reserve restoration period is how long? CORRECT ANSWER 90 min BAL When does restoration period begin following a loss of MSSC? CORRECT ANSWER after the end of recovery period BAL DCS requirement CORRECT ANSWER 80% MSSC BAL ACE Equation CORRECT ANSWER ACE = (NIa-NIs)-10ß(fa-fs)-Ime frequency bias is validated by whom? CORRECT ANSWER ERO
During which condition do you modify your frequency bias settings to include combined BAAs? CORRECT ANSWER Overlap regulation service Governor droop is required for what units? CORRECT ANSWER Nameplate data
=10MW Minimum response for frequency deviations for governor droop? CORRECT ANSWER ±0.036Hz 5% droop is equal to how many hertz? CORRECT ANSWER 3 Hz droop contribution calculation CORRECT ANSWER 3 Hz/unit MW = frequency drop or raise/droop contribution generation change is proportional or inversely proportional to frequency? CORRECT ANSWER inversely proportional change in load is proportional or inversely proportional to frequency? CORRECT ANSWER proportional who can be a time monitor CORRECT ANSWER RC two methods of time correction CORRECT ANSWER frequency offset (0.02Hz) or net interchange schedule offset(20%* ß) If unable to provide regulation service who must the BA notify? CORRECT ANSWER Host BA and any intermediate BA
Each TOP shall inform who of actual or expected operation that could result in emergency conditions CORRECT ANSWER RC, impacted BAs, impacted TOPs Which equipment must a BA or TOP inform RC about if out for greater than 30 mins? CORRECT ANSWER Telemetering and control monitoring and assessment communications channels TOP TOP real time assessment is done every how many minutes? CORRECT ANSWER 30 min TOP TOP shall operate so that none of the following occur as a result of MSSC (3) CORRECT ANSWER instability uncontrolled separation cascading outages TOP how long does a TO have to restore if they enter an unknown operating state? CORRECT ANSWER 30 min TOP Each RC, TOP and BA shall monitor? CORRECT ANSWER Transmission line status Real and reactive power flows
Voltage Load tap changer settings Rotating and static reactive resource statuses System frequency TOP Each RC, TOP and BA shall provide? CORRECT ANSWER Info concerning protective relays Weather forecasts, past load patterns Important deviations in operating conditions Sufficient metering following a IROL violations TOP shall return system to within IROL in no more than how many minutes? CORRECT ANSWER 30 minutes RC shall report any IROL violation exceeding 30 minutes to RRO and NERC within how many hours? CORRECT ANSWER 72 hours BA must meet these four requirements CORRECT ANSWER instantaneous demand interchange schedule operating reserve reactive resource requirements overgeneration ACE is postive/negative? undergeneration ACE is positive/negative? CORRECT ANSWER positive negative
Slow clock Fast clock Corrected IAW NAESB time error correction procedure CORRECT ANSWER 60.02 Hz 59.98 Hz Rules for NAESB time correction CORRECT ANSWER start and end on hour or half-hour 60 min warning 1 hour minimum run time fast clock not between 0400-1100 CT Manual add can be used for what? CORRECT ANSWER compensate for meter error tie-line telemetry failures bilateral payback Operating reserves definition per NERC CORRECT ANSWER Capability above firm demand to provide for Regulation load forecasting error equipment forced and scheduled outages local area protection Spinning reserve CORRECT ANSWER two sources generation and demand-side management
regulating reserves CORRECT ANSWER generation on line that is unloaded and AGC responsive CPS1 is a how many month average CORRECT ANSWER 12 month Providing Overlap regulation CORRECT ANSWER evaluated on as a single area ACEs are combined frequency bias are combined Providing supplemental regulation service CORRECT ANSWER Dynamic transfer Own ACE What is sufficient operating reserves? CORRECT ANSWER Capacity required to met the CPS and DCS Operating reserve CORRECT ANSWER Capability above firm demand required to provide for regulation, load forecasting error, equipment forced and scheduled outages and local area protection Define operating reserve-spinning CORRECT ANSWER Gen synchronized to system and fully available to serve load with disturbance recovery period TOP BA shall have operating plans for the next day that address what? CORRECT ANSWER expected generation resource commitment and dispatch interchange scheduling demand patterns
GO shall provide the following to the TOP within 30 days of a request? CORRECT ANSWER gen step-up transformers and auxiliary transformers with primary voltage greater than generator terminal voltage tap settings available fixed tag ranges impedance data IRO Each RC shall have what kind of communications with TOPs, BAs and neighboring RCs CORRECT ANSWER multi-directional communications both voice and data exchange IRO each RC shall have adequate analysis tools such as? CORRECT ANSWER state estimation pre and post contingency analysis capabilities wide area overview displays IRO RC shall have a documented specification for data and information to build and maintain models to support (3) CORRECT ANSWER real-time monitoring operational planning analyses Real-time assessments. IRO How often do conference calls between adjacent RCs have to be? CORRECT ANSWER at least weekly
frequency response of a power system takes approximately how long? CORRECT ANSWER 10 to 20 seconds Unit's responsive spinning reserve definition? The amount of time it is fully available? CORRECT ANSWER The portion of spinning reserve that is responsive to governor commands 15 seconds EOP Each TOP shall update its restoration plan within how many days for which events? CORRECT ANSWER 90 days after identifying any unplanned permanent system mod Prior to implementing a planned BES mod, that would change the implementation of its restoration plan Black start units must be tested every how many years? CORRECT ANSWER every 3 years How long does a GOP have to tell a TOP of a change to black start resource? CORRECT ANSWER 24 hours EOP System-wide voltage reduction resulting from a BES emergency reporting criteria CORRECT ANSWER reduction of 3% or more EOP
Unplanned evacuation of its BES control center reportable criteria CORRECT ANSWER Unplanned evacuation of more than 30 continuous minutes EOP Complete loss of interpersonal communication reporting criteria CORRECT ANSWER complete loss of communication capability affecting staffed BES control center for 30 continuous minutes or more EOP Complete loss of monitoring or control capability reporting criteria CORRECT ANSWER complete loss of monitoring of staffed BES control center for 30 minutes or more EOP Interim provisions must be included if plan is expected to take longer than how long for a loss of primary control center CORRECT ANSWER 1 hour to implement EOP a backup facility is not required during? CORRECT ANSWER planned outages of primary or backup facilities of two weeks or less unplanned outages of primary or backup facilities EOP Each RC, BA and TOP shall review the operating plan for backup functionality how often? Update and approval of operating plan for backup functionality shall take place within how many days of any changes to any part of operating plan? CORRECT ANSWER annually
60 days EOP Annual test of backup facility must last how long? CORRECT ANSWER minimum of two continuous hours Imports are negative/positive values? Exports are negative/positive vaules? CORRECT ANSWER Imports negative Exports positive INT PSE must update dynamic schedule or Pseudo-tie for future hours if any one of the following occurs CORRECT ANSWER Confirmed interchange > 250 MW for last hour if actual hourly integrated value deviates by more than 10% Confirmed interchange <250 MW for last hour if actual hourly integrated value deviates by more than 25 MW INT If a BA losses resources that are covered by an energy sharing agreement they shall submit a what within how long of resource loss? CORRECT ANSWER A request for interchange (RIF) with 60 mins INT How long does the sink BA have to modify a interchange for actual or anticipated reliability-related reasons CORRECT ANSWER 60 mins
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RC, TOP and BAs shall test alternative interpersonal communication how often? How long do they have to repair or designate a replacement if it fails? CORRECT ANSWER Monthly 2 hours COM Each RC, TOP and BA shall notify entities within how long if interpersonal communication fails for longer than how long? CORRECT ANSWER 60 minutes for longer than 30 minutes IRO Each GO shall document interconnection requirements and make them available upon request within how many days? CORRECT ANSWER 45 days IRO Each Reliability Coordinator shall have data exchange capabilities with its Balancing Authorities and Transmission Operators, and with other entities it deems necessary, for it to perform what? CORRECT ANSWER Its Operational Planning Analyses, Real-time monitoring, and Realtime Assessments IRO Each Reliability Coordinator shall provide its System Operators with the authority to approve planned outages and maintenance of its? CORRECT ANSWER telecommunication, monitoring and analysis capabilities. IRO Each Reliability Coordinator shall have monitoring systems that provide information utilized by the Reliability Coordinator's operating personnel, giving
particular emphasis to what? CORRECT ANSWER alarm management and awareness systems, automated data transfers, and synchronized information systems, over a redundant infrastructure IRO Each Reliability Coordinator shall notify Who??? within its Reliability Coordinator Area, and other impacted Reliability Coordinators as indicated in its Operating Plan, when the results of a Realtime Assessment indicate an actual or expected condition that results in, or could result in, a System Operating Limit (SOL) or Interconnection Reliability Operating Limit (IROL) exceedance within its Wide Area. CORRECT ANSWER impacted Transmission Operators and Balancing Authorities EOP During an EEA 3 how often should the energy deficient entity update their RC? How often should the affected RC updated RCIS? CORRECT ANSWER minimum hourly as changes occur EOP When is the only time an RC can request a revaluation of IROL and SOL from TOP? CORRECT ANSWER EEA 3 EOP Energy deficient entity has how long to submit report to NERC after downgrade of EEA alert 3? CORRECT ANSWER 2 business days EOP
Each GOP shall have a minimum of how many hours of training for blackstart generation units CORRECT ANSWER Two hours every two calendar years EOP When does the RC area restoration plan start? When does the RC area restoration plan end? CORRECT ANSWER When Blackstart Resources are utilized to re-energize a shutdown area, or separation has occurred between neighboring Reliability Coordinators, or an energized island All its TOP are interconnected and RC area is connected to neighboring RC areas EOP How long does a RC have to distribute a revised restoration plan? Who is it distributed too? CORRECT ANSWER 30 calendar days of creation or revision TOP and neighboring RCs EOP How often does the RC review its restoration plan? CORRECT ANSWER Every 13 calendar months EOP If a neighboring RC has a conflict with a restoration plan how long do they have to provide written notification? CORRECT ANSWER 60 calendar days of receipt EOP How often must the RC have system restoration training? CORRECT ANSWER Annually
EOP
How often shall each RC conduct system restoration drills, exercises or simulations? CORRECT ANSWER Two per calender year EOP How long does the RC have to review a submitted TOP or RC regarding any reliability risks in operating plans CORRECT ANSWER 30 calendar days of receipt EOP Who needs to develop, maintain, and implement Operating Plans for emergencies? CORRECT ANSWER TOPs and BAs EOP What is included in a operating plan for emergencies? CORRECT ANSWER roles and responsibilities notifications to RC requesting EEA capability and availability fuel supply concerns fuel switching environmental constraints public appeals for load reductions requests to gov agencies reduction of internal utility energy use use of interruptible load,curtailable load or LR impacts of extreme weather conditions
