Nerc Test | Actual Questions and Answers Latest Updated 2024/2025 (Graded A+), Exams of Communication

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Nerc Test | Actual Questions and Answers Latest Updated 2024/2025 (Graded

A+)

60 minutes - ✔✔According to Nerc Standards, an emergency interchange transaction can be exempt from tagging if it is less than_________________ 2 business days - ✔✔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 5% - ✔✔During restoration efforts load pick-ups should not exceed_____________ percentage of synchronized generation capacity load and generation - ✔✔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 Energy Emergency Alerts - ✔✔What system was put in place to provide RC's with a mechanism to handle energy deficiencies? withing 60 minutes of the start of modification - ✔✔If due to a reliability event, an interchange transaction must be modified, how long does the Sink Balancing Authority have to modify the tag? Frequency Fluctuations - ✔✔What is an example of a disturbance that has caused you system to become islanded? Continuous decline in frequency - ✔✔What is an instance is which you use manual load shedding? Schedule emergency assistance, recall all non-firm exports, start all available generation - ✔✔What actions should be implemented during a EEA 2

Transmission facility is overloaded, voltages are rapidly decaying, and no other situations are available - ✔✔What would be an appropriate situation for a system operator to shed load? Without delay, within 30 minutes - ✔✔If an RC issues you a directive to implement when should it be implemented? Simulated emergencies - ✔✔Each Operating Authority should periodically practice________________ Its RC and any other potentially affected Transmission Operators - ✔✔If a Transmission Operator has an anticipated emergency condition, it shall inform_________________ Annually - ✔✔How often shall the Transmission Operator and BA review and update each emergency plan___________ 60 - ✔✔According to Nerc Standards, emergency plans must include interim provisions if it is expected to take more than how many minutes to implement the contingency plan for loss of primary control facility EEA 2 - ✔✔Which EEA is used to announce the change in transmission service priority? Reliability Coordinator - ✔✔Who is the only entity that can declare an EEA? No one - ✔✔Who must a system operator receive approval from to manually shed load? frequency, the rate of frequency decay, the rate of voltage decay - ✔✔Automatic load shedding schemes should consider the following 3 things........ periodic testing - ✔✔Blackstart capabilities should be verified by______________ degrees - ✔✔Synchroscopes should be calibrated in_____________

Differential relay - ✔✔What type of relay is relay 87?

• 50 - ✔✔If Ace is - 50 before a disturbance it must return to____________ 15 - ✔✔The disturbance recovery period is__________ minutes after the start of of a reportable disturbance. Constant Frequency, Constant Interchange, Tie-line Bias - ✔✔What are the 3 types of AGC? and what is AGC? Distance relay - ✔✔What type of relay is relay 21? Tie-line frequency bias - ✔✔Each BA shall operate its AGC on? Ground relay - ✔✔What type of relay is relay 64 0 - ✔✔If ACE is 50 before a disturbance it must return to______________ interchange - ✔✔An_____________is a contract between a PSE and another party to purchase or sell energy INT- 009 - ✔✔the purpose of this to ensure that BA implement the interchange as agreed upon in the interchange confirmation process protective, auxiliary, monitoring, programming, regulating - ✔✔What are the types of relays? overcurrent, ground, differential, distance - ✔✔What are examples of protective relays?

INT- 004 - ✔✔the purpose is to ensure dynamic schedule and psedo-ties are communicated and accounted for appropriately in congestion management procedures tripping, lockout, timers, re-closing - ✔✔What are types of auxiliary relays? protection system schemes - ✔✔The purpose of the______________is to detect abnormal system conditions and isolate fault condition to maintain reliability INT- 006 - ✔✔the purpose is to ensure that responsible entities conduct a reliability assessment of each arranged interchange before it is implemented When more power is leaving the transformer - ✔✔How do you know when a fault is on the line? transmission data, generation data, operating reserves, balancing area demand, interchange, ACE&frequency - ✔✔Which 6 things are updated every 10 minutes? EEA 1 - ✔✔Which EEA is a warning, and that you may be getting ready to put yourself in a situation. (no sales will be made) EEA 2 - ✔✔Which EEA includes: public appeals, voltage reduction, interruption of non-firm capacity - ✔✔A___________emergency means you're short on generation EEA 2 - ✔✔In which EEA will you no longer provide customers expected energy; will not shed load For emergency or near emergency situations - ✔✔What are interconnection "hot-lines" intended to be used for? 30 - ✔✔If a BA is unable to calculate ACE for more than________minutes it shall notify its Reliability Coordinator

EEA 3 - ✔✔In which EEA is firm load interruption imminent or in progress 24 hours - ✔✔a preliminary report for a system disturbance that meets NERC criteria for a report must be completed within___________ 300MW - ✔✔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? 3% - ✔✔DOE requires a report for a sustained voltage reduction that is greater than_____ 60 days - ✔✔a final written report for a system disturbance that meets NERC criteria for reporting must be completed within____________ 15 minutes - ✔✔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? 10% - ✔✔a system voltage excursion of__________or greater must be reported to the NERC 100MW - ✔✔The threshold for the amount of firm load MW that can be shed for system reliability that requires a NERC and DOE report is To prevent uncontrolled system seperation - ✔✔What is the purpose of automatic load shedding? Synchroscopes - ✔✔When tying islands together during a system restoration, what element should be present on the facilities creating the tie? 30 minutes - ✔✔Load reduction plans have to able to be implemented in what time frame?

15 minutes - ✔✔The DCS specifies that the ACE must return to zero or its pre-disturbance level within_________following the start of a disturbance unilateral payback - ✔✔Inadvertent interchange accumulation paid back by controlling to a target of nonzero ACE and limited by the BA's L10 is known as________________ Purchase Selling Entity - ✔✔Who is responsible for submitting and updating the Request for Interchange associated with a Dynamic Transfer governor dead band - ✔✔The amount of frequency change that occurs before the governor starts to respond Energy Profile, Scheduled Path Connectivity, Generator Ramping Capability - ✔✔Which of the following must BA's evaluate to determine if the Arranged Interchange should be confirmed? Generation, Load, Transmission - ✔✔Which of the following is required to be in the metered boundaries of a BA area System Operating Limit - ✔✔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 10 degrees - ✔✔At what torque angle of operation does power typically begin to flow from the generator to the system?

• ✔✔What is one of the criteria used to determine a System Operating Limit? Device 21 - ✔✔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. Transmission Operator and Host BA - ✔✔Each Generator Operator shall coordinate all new protective systems and all protective system changes with whom?

Pilot - ✔✔What type of relay signals can be sent over various types of communication channels SWPC - ✔✔The__________is responsible for the Real-time monitoring and forecasting of solar and geophysical events that affect power grids and other technological systems. Geomagnetic Disturbance - ✔✔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? Geomagnetically Induced Current - ✔✔What are ground potential differences that can cause currents to flow through the Earth's surface? 30 - ✔✔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 Operating Plan - ✔✔What is a document that identifies a group of activities that may be used to achieve some goal? Primary and Backup Control Room - ✔✔RC's are required to keep a copy of their Restoration Plan, as well as, copies of each of their Transmission Operator's approved plans, in their______________. Monitor restoration progress, coordinate restoration activities, restore the BES frequency within acceptable operating limits - ✔✔What is the role of the RC in the system restoration process? Control Center - ✔✔One or more facilities hosting operating personnel that monitor and control the BES in real-time to perform the reliability task is called a? Operating Procedure - ✔✔What is a document that identifies specific steps or tasks that should be taken by one or more specific operating positions to achieve specific operating goals Operating Process - ✔✔A document that identifies general steps for achieving a generic operating goal

Annually - ✔✔How often must a System Restoration Plan be viewed? Relay - ✔✔___________targets are brief descriptions of what cause a relay to operate Synchroscope - ✔✔What simple piece of equipment is used to monitor the three synchronizing variables? Automatic generation control - ✔✔What is the form of the control system that is required to balance generation to load and maintain a constant frequency regulating units - ✔✔What are units that receive and respond to AGC signals called? Constant Frequency Control - ✔✔What mode of AGC is commonly used if there is only one BA? Blackout - ✔✔What is a condition where a major portion or all of an electrical network is de-energized? Dynamic instability - ✔✔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 Transient instability - ✔✔The loss of a generating unit or plant after a close-in fault or short circuit that is not cleared quickly enough Bulk Electric System facilities - ✔✔In NERC priority order, which facilities have the highest priority following a widespread regional blackout?