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NERC TEST ACTUAL EXAM WITH QUESTIONS AND
ANSWERS LATEST UPDATE 2025 /
According to Nerc Standards, an emergency interchange transaction can be exempt from tagging if it is less than 60 minutes A BA or LSE that requests an EEA 3 must complete and EEA 3 report and submit it to the RC within how many days 2 business days During restoration efforts load pick-ups should not exceed percentage of synchronized generation capacity 5% What are the two components that a system operator should be aware of for controlling frequency during a system restoration if they are in an islanded situation load and generation What system was put in place to provide RC's with a mechanism to handle energy deficiencies? Energy Emergency Alerts
If due to a reliability event, an interchange transaction must be modified, how long does the Sink Balancing Authority have to modify the tag? withing 60 minutes of the start of modification What is an example of a disturbance that has caused you system to become islanded? Frequency Fluctuations What is an instance is which you use manual load shedding? Continuous decline in frequency What actions should be implemented during a EEA 2 Schedule emergency assistance, recall all non-firm exports, start all available generation What would be an appropriate situation for a system operator to shed load? Transmission facility is overloaded, voltages are rapidly decaying, and no other situations are available If an RC issues you a directive to implement when should it be implemented? Without delay, within 30 minutes Each Operating Authority should periodically practice Simulated emergencies
Blackstart capabilities should be verified by periodic testing Synchroscopes should be calibrated in degrees What type of relay is relay 87? Differential relay If Ace is - 50 before a disturbance it must return to
- 50 The disturbance recovery period is minutes after the start of of a reportable disturbance. 15 What are the 3 types of AGC? and what is AGC? Constant Frequency, Constant Interchange, Tie-line Bias What type of relay is relay 21? Distance relay Each BA shall operate its AGC on?
Tie-line frequency bias What type of relay is relay 64 Ground relay If ACE is 50 before a disturbance it must return to 0 An is a contract between a PSE and another party to purchase or sell energy interchange the purpose of this to ensure that BA implement the interchange as agreed upon in the interchange confirmation process INT- 009 What are the types of relays? protective, auxiliary, monitoring, programming, regulating What are examples of protective relays? overcurrent, ground, differential, distance
EEA 1
Which EEA includes: public appeals, voltage reduction, interruption of non-firm EEA 2 A emergency means you're short on generation capacity In which EEA will you no longer provide customers expected energy; will not shed load EEA 2 What are interconnection "hot-lines" intended to be used for? For emergency or near emergency situations If a BA is unable to calculate ACE for more than minutes it shall notify its Reliability Coordinator 30 In which EEA is firm load interruption imminent or in progress EEA 3 a preliminary report for a system disturbance that meets NERC criteria for a report must be completed within
24 hours If you lost firm system demand for 15 minutes, and your peak load for the previous year was > 3000MW, what is the threshold for the reporting criteria to NERC? 300MW DOE requires a report for a sustained voltage reduction that is greater than 3% a final written report for a system disturbance that meets NERC criteria for reporting must be completed within 60 days NERC requires that they be notified if a BA area loses firm load above a certain amount (depend on the size of a BA area) for what duration of time? 15 minutes a system voltage excursion of or greater must be reported to the NERC 10% The threshold for the amount of firm load MW that can be shed for system reliability that requires a NERC and DOE report is 100MW
governor dead band Which of the following must BA's evaluate to determine if the Arranged Interchange should be confirmed? Energy Profile, Scheduled Path Connectivity, Generator Ramping Capability Which of the following is required to be in the metered boundaries of a BA area Generation, Load, Transmission A is the value that satisfies the most limiting of the prescribed operating criteria for a specified system configuration to ensure operation within acceptable reliability criteria System Operating Limit At what torque angle of operation does power typically begin to flow from the generator to the system? 10 degrees What is one of the criteria used to determine a System Operating Limit? Which relay uses a combination of CT and PT measurements and operates when the ratio of the PT measurements to CT measurements is below a certain limit for a given time period. Device 21
Each Generator Operator shall coordinate all new protective systems and all protective system changes with whom? Transmission Operator and Host BA What type of relay signals can be sent over various types of communication channels Pilot The is responsible for the Real-time monitoring and forecasting of solar and geophysical events that affect power grids and other technological systems. SWPC What is the interaction between electrically charged particles from the sun's surface and the Earth's magnetic field caused by the solar storms called? Geomagnetic Disturbance What are ground potential differences that can cause currents to flow through the Earth's surface? Geomagnetically Induced Current Each RC must review its neighboring RC's restoration plan to ensure there are no conflicts between its restoration plan and any of its neighbors. If a conflict is found, the conflict must be resolved within calendar days 30 What is a document that identifies a group of activities that may be used to achieve some goal?
targets are brief descriptions of what cause a relay to operate Relay What simple piece of equipment is used to monitor the three synchronizing variables? Synchroscope What is the form of the control system that is required to balance generation to load and maintain a constant frequency Automatic generation control What are units that receive and respond to AGC signals called? regulating units What mode of AGC is commonly used if there is only one BA? Constant Frequency Control What is a condition where a major portion or all of an electrical network is de-energized? Blackout A condition when the transmission network connections between a generating unit, or a geographic unit and the interconnection become weakened such that cascading events may occur Dynamic instability
The loss of a generating unit or plant after a close-in fault or short circuit that is not cleared quickly enough Transient instability In NERC priority order, which facilities have the highest priority following a widespread regional blackout? Bulk Electric System facilities
