NERC Electric Power Sector Reform (EPSR) Practice Exam

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• What type of generation response is expected from a 5% governor droop when frequency drops by 0.15 Hz?
• What could be a consequence of running generators under-excited?
• Who is responsible for developing procedures to ensure transmission reliability?
• Which historical data is best to use for predicting line loading on a hot day?
• What is essential for maintaining system reliability during load balancing?
• What measurement is used for power flow data between balancing authorities?
• How often should restoration services for critical telecommunication channels be available?
• What effect does a lightly loaded 500kV transmission line have?
• What is the primary goal during a capacity emergency according to NERC standards?
• How frequently should testing of control center communication capabilities occur?
• What is the term used when an open-ended transmission line experiences high voltage due to its inductance?
• What does Net Actual Interchange minus Net Scheduled Interchange represent?
• What is the normal and recommended mode of the AGC?
• What threshold must a Reliability Coordinator monitor related to ACE errors?
• What term is used to indicate the remaining transfer capability on a transmission network for further commercial activity?
• What should a Responsible Entity do if failure of communication capabilities lasts longer than the specified time?
• Who is responsible for arranging interchange transactions?
• To demonstrate compliance with Requirement R1, each non-FRSG member BA must achieve an annual FRM that is:
• Once the TOP has developed a system restoration plan, what should be done with the plan?
• If a nuclear plant is uprated from 1200 MW to 1300 MW, how much must the spinning reserve portion of a contingency reserve increase to accommodate this?
• Before resynchronization of an isolated area to the interconnection, what are three important power system parameters that must be within acceptable limits?
• When does the contingency reserve restoration period begin for a Balancing Authority or Reserve Sharing Group?
• To increase MVAR output from a generator, what parameter is adjusted?
• Which of the following activities is NOT typically included in transmission reliability procedures?
• What is a full-time data network used for sharing operational security information?
• What type of relaying operates by comparing incoming and outgoing currents within a protected zone?
• Automatic load shedding settings should not be based on which of the following?
• What should a system operator in a known weak area do first if voltage is declining?
• Who is responsible for obtaining transmission services for an interchange transaction?
• In an emergency situation, who has the priority when allocating resources?
• What voltage level operation supports maximum system reliability?
• What is one of the core responsibilities of a balancing authority?
• What is the power factor of the Roxboro-Milburnie Black 230kV line with energy flows of 80 MW and 60 MVAR?
• What is the compliance percentage of reportable disturbances according to DCS?
• What is the purpose of the voltage schedule provided by the TOP?
• Which of the following is NOT considered a reactive resource?
• What should be prioritized to enhance safety during system restoration?
• What should be monitored to ensure efficient operation of electrical systems?
• What is a requirement for a BES Cyber System regarding communication capabilities?
• If underfrequency generator protection is set at 58.3 Hz, what should the setpoint for load shedding be to maintain system stability?
• When there is a frequency dip, what is the outcome of a 5% drop characteristic on connected generators?
• A BA that is part of a multiple BA Interconnection and not receiving Overlap Regulation Service must maintain a B that is:
• Which compliance percentage is associated with CPS1?
• If a test of interpersonal communication capability is unsuccessful, the responsible entity must act to repair it within how long?
• What does the term 'leading' or 'lagging' refer to in relation to generators?
• BES stands for what in the context of electric power?
• How often should electric system security data be updated for it to remain valid?
• If the RTU signal for power flow over a tie-line is significantly in error, what should the system operator of BA ABC do?
• Which of the following best describes 'overexcited' generators?
• When possible, a Transmission Operator (TOP) should try to use which of the following to energize high voltage transmission lines?
• In which operation mode should the generator be maintained unless notified otherwise?
• Which of the following is not classified as a controllable demand side management (DSM) program?
• In a situation where ABC BA cannot meet its native load and regulating requirements, it will request that its RC issue a?
• What must occur if the issue regarding the AVR status change is resolved within the specified time frame?
• What component is necessary for implementing effective system restoration strategies?
• Which document governs the operating procedures for interchange transactions?
• To whom may a request for information about an interchange transaction NOT be given?
• All electronic interchange schedule communications are to be in which time zone?
• For what purpose shall data received over the Interregional Security Network (ISN) be used?
• How quickly must a GOP notify the associated TOP of a status change on the AVR or alternative voltage controlling device?
• After a disturbance, what action should be taken if 40% of the load is intact but frequency is declining?
• Which interchange transaction does not need to be tagged before it starts?
• The Generator Operator shall maintain the generator voltage or reactive power schedule as provided by its ______________.
• How should the voltage or reactive power schedule be specified by the Transmission Operator (TOP)?
• During a system restoration, col load pick up can involve inrush currents that are how large?
• In the case of an inadvertent accumulation of 240 MWh over generation, which scheduling would work if 50% is on peak?
• What action should the RC take during an area-wide disturbance when there is a possibility of losing a major tie line?
• A 100 MW generator with a 5% governor droop responds to a -0.15 Hz frequency deviation. How much will it output?
• How often shall the RC perform real-time assessments?
• Which step is most appropriate if a system disturbance causes a BA to lose frequency meters?
• What is the primary consideration when planning the interconnected transmission system?
• What action should BA A take when endangered by remaining interconnected with a declining frequency?
• A frequency dip is caused by a single control area's disturbance, stabilizing at 59.85 Hz. How much load should be shed to restore frequency to 60 Hz?
• On what basis must a Balancing Authority approve or deny an interchange transaction?
• What can prevent imminent separation from the interconnection?
• On a hot summer day with planned generation maintenance, what should you do if there's a forecasted energy emergency during system peak loading?
• You are noticing a voltage decline in a weak area of your system. After exhausting reactive resources, what should you do?
• How often should tags relating to interchange transactions be updated?
• Which components are categorized as dynamic reactive resources?
• What must BAs that are not members of a FRSG achieve regarding their annual FRM?
• Who is responsible for confirming the interchange schedule with the sending Balancing Authority?
• What equipment shall each Balancing Authority (BA) have available to assist the system operator in maintaining voltage within established limits?
• Which process ensures that a system remains within operational limits following a disturbance?
• How often shall each RC, TOP, and BA test its alternative interpersonal communication capability?
• When managing reactive resources, which bank is used to counteract high voltage conditions?
• To predict the near-term load pattern, a system operator must consider which factor?
• During extreme low load conditions, what are the primary system conditions the system operator works to alleviate?
• What is the significance of the 'Contingency Reserve Restoration Period'?
• What is likely to happen after a severe disturbance on the interconnection when frequency oscillation occurs?
• Energy and capacity emergency plans should include consideration for which aspect?
• What minimum load is often set for transactions to ensure they are profitable?
• Which of the following options does not qualify as a contingency reserve?
• Which of the following are considered dynamic reactive resources?
• How often do NERC Reliability Standards require a BA to perform control error checks using tie-line MWh meters?
• What is critical in the planning of future expansion of transmission systems?
• In terms of power reserves, what does the acronym MSSC stand for?
• You have a transaction request of 100 MW on a scheduled path with an ATC of 95 MW. What should you do?
• What happens if a TOP enters an unknown operating state?
• If a generator's loading is reduced by 100 MW, what is the new loading for Line A-B and Line C-D if originally Line A-B is at 300 MW and Line C-D at 100 MW with participation factors of 0.4 and 0.2 respectively?
• Which of the following is an example of Electric system security data that is not requested to be updated at least every 10 minutes?
• Following an area blackout, what must the TOP ensure when re-energizing transmission lines?
• When can you re-use a tag number?
• What role does communication play among Regional Coordinators (RCs) during emergencies?
• What is a common tool used to assess the interchange between balancing authorities?
• What role does the Transmission Service Provider serve during an interchange transaction?
• Which condition is the system operator typically trying to prevent during periods of low generation?
• When shall the Reliability Coordinator share its next day analysis with Transmission Operators and Balancing Authorities?
• If you have 40% of your load intact, an ACE near zero, and frequency increasing from 59.5 Hz, what should you do?
• How does load shedding affect system stability in terms of reactive power?
• Which standard measures a Balancing Authority's ability to maintain adequate operating reserves?
• What should a TOP do if it is in imminent danger of violating an IROL?
• If a system disturbance causes a generator to be out of step, what does this mean?
• What is the actual VARS delivered by a 60 MVAR shunt capacitor bank at 0.9 p.u. voltage?
• What must the transmission owner provide to the generator owner?
• During a system restoration, load block additions should be limited to what percentage of the online generation availability?
• Before disconnecting an affected facility due to overload, NERC reliability standards require what action?
• If a capacity emergency is anticipated during peak loading, what action should be taken regarding maintenance?
• What type of resources must be included in the assets considered by each Responsible Entity?
• Which network is used for sharing operational security information?
• During an operating capacity emergency, BA ABC shall balance its schedules and generation to its load without regard to?
• During which scenario would you expect 'Ferranti Voltage Rise Effect'?
• Who has the authority to shed load in a capacity emergency?
• A 200 MW transaction starts at the top of the hour and is terminated 30 minutes later. If a ten minute ramp is used, what is the integrated MWh for this transaction?
• What is the time period required for a Balancing Authority to return ACE to zero according to the DCS?
• To maximize system reliability, which practice should be employed?
• What is the term for generators supplying VARs to support voltage and operating in that mode?
• If an IROL violation cannot be avoided, what must the RC do?
• If the voltage at substation A is 235kV and at substation B is 230kV, how does the reactive power (MVARs) flow?
• In the case of large ACE errors affecting frequency, what action should the Reliability Coordinator take?
• Which asset rating falls under the medium impact rating category?
• In case of critical conditions, what does manual load shedding specifically aim to achieve?
• After detecting a failure of interpersonal communication capability lasting 30 minutes or more, entities must be notified within what timeframe?
• What does an Energy Emergency Alert (EEA) indicate within the context of Reliability Standards?
• All telecommunicated channels shall be periodically tested or monitored how?
• What is the responsibility of the generator owner regarding tap settings and impedance data?
• How quickly must each Primary Scheduling Entity with title to an interchange transaction arrange personnel for notification of changes?
• Protection systems on major transmission lines should be coordinated with whom?
• What is a critical step in the system restoration process?
• System restoration plans shall be coordinated with whom?
• What is the purpose of Emergency Event Actions (EEAs)?
• When a line is VAR neutral, the loading at which this occurs is known as what?
• Which entity is primarily concerned with the oversight of transmission reliability in a region?
• Which of the following is essential for the timely approval of interchange transactions by a Balancing Authority?
• By what time shall each Generator Operator (GOP) and Transmission Operator (TOP) provide its outage information daily?
• In the event of an IROL violation, how should the RC act?
• Reportable disturbances are contingencies that meet or exceed what percentage of the most severe single contingency?
• What is the key focus of the DCS requirement for Balancing Authorities?
• Upon telemetry failure of a generator's output, what is the most likely change you would expect?
• Which of the following is NOT a NERC disturbance reporting requirement for a 1000 MW system?
• What should a BA anticipate if an operating capacity emergency occurs?
• What action is recommended if voltage is declining in a known weak area after exhausting reactive resources?
• Which factor should not influence transmission line ratings?
• Is the statement about Geo-magnetic disturbances (GMD) and RCs valid?
• If MVAR flows are high across transmission lines in a weak area, which action is preferable?
• In a scenario where generation is insufficient and voltage is decaying, what must the system operator do?
• Each TOP must provide a copy of the voltage schedule to its ______________ and ______________ operators within ____________ days of request.
• A system in the process of restoration has 1000MW of synchronized generation and 700 MW of connected load. What amount of load should be shed to raise the frequency by 0.5 Hz?
• How should the AGC system be operated after losing tie-line RTUs with a neighboring BA?
• How often shall each Reliability Coordinator (RC) perform a real-time assessment of IROLs?
• Where should voltage reduction for load reduction be performed?
• By what time must BA ABC act to eliminate an IROL violation discovered at 12:30 on July 1?
• If a BA performed a 5% voltage reduction but has not shed firm load, in what level of Emergency Event Actions (EEA) is this BA categorized?
• How is inadvertent interchange commonly addressed between control areas?
• What is the default ramp time for the eastern interconnect?
• If a radial line delivers 60 MVAR with a total loading of 100 MVA, what is the active power delivered?
• Where should voltage reduction for load reduction be performed?
• What type of relay uses a combination of CT measurements and PT measurements?
• What is the ramp duration given for starting an interchange transaction at 0755?
• When referring to transmission lines, what standard should neighboring systems use?
• When arranging an interchange transaction, which entity cannot disclose information to unconnected PSEs?
• What type of generation is primarily used to support VAR absorption?
• What is the term used for generators operating to absorb VARs in order to lower system voltage?
• What does blackstart capability refer to?
• Which of the following statements regarding asset categorization is true?
• What is a key benefit of having a planned blackstart process?
• If an external BA with a frequency bias of 20MW/0.1Hz sees a frequency of 60.02 Hz due to a loss of load, approximately how much generation change would the BA experience?
• What happens when a generator is under excited?
• One of the benefits of periodic blackstart testing is what?
• What is the default contingency reserve restoration period?
• What factor is NOT typically included in capacity emergency planning?
• What results from Net Scheduled Interchange being greater than Net Actual Interchange?
• A proper operating protective relay scheme should normally operate for what conditions?
• In the context of emergency operations, what is a critical factor for communication systems?
• What type of generation usually does not count towards a Balancing Authority's contingency reserve?
• The Balancing Authority must keep enough contingency reserve to address which of the following?
• What is the purpose of a generator capability curve?
• When a Reliability Coordinator (RC) curtails an interchange transaction for TLR purposes, who must they notify?
• How many consecutive clock-minutes can a BA's average Reporting ACE exceed its clock-minute BA ACE limit?
• What is the primary purpose of a backup control center?
• What might cause an alarm on SCADA indicating a bus breaker is closed while the bus appears de-energized?
• Which of the following is vital for maintaining transmission voltage during system restoration?
• How does a BA maintain compliance when frequency varies significantly from 60 Hz?
• How many MWh should be shown in the MWh field of a 60 MW energy profile starting at 0800 and stopping at 1800?
• What should be the prime consideration of a system operator when an operating emergency occurs?
• How can voltage reduction be implemented for load relief?
• A generator's capability for system restoration purposes is determined by what?
• Which of the following is not classified as a reactive resource?
• In terms of system operations, why is it crucial to manage voltage in weak areas?
• Which organization does the TOP need to share its voltage schedule with?
• What is the purpose of using high speed relays and high speed circuit breakers?
• Can a BES Cyber System be defined as a grouping of critical cyber assets?
• If the voltage at substation A is higher than at substation B, how is the reactive power (MVAR) flow indicated?
• What category includes all the necessary assets a Responsible Entity must implement a process for?
• What action is typically taken to address an impending energy emergency?
• If a transmission line rated at 400 MVA carries a load of 300 MW and 200 MVAR, is it operating above its rating?
• What should be done to ensure reliability during a transmission system overload?
• Which of the following is not considered to be electric system security data?
• What does ATC stand for in the context of transmission capability?
• In a case where a transformer bank protection panel shows an 87T target, what type of initial relay operation triggered the lockout?
• After completing a load forecast, generating units should be assigned for which of the following?
• When planning a load shedding scheme, which parameter should be excluded from consideration?
• BAs can share interchange transaction information with whom?
• Which one of the following is an example of a controllable DSM program?
• What is the most suitable equipment for reactive reserve response to a contingency?
• When must personnel for interchange notifications be available?
• What is the resultant loading of line A-B and line C-D after a 150 MW reduction on a generator with initial loads of 200 MW and 100 MW, respectively?
• Who is responsible for transitioning arranged interchange to confirmed interchange?
• What is not a function of a generator capability curve?
• How should the effectiveness of reactive power support be evaluated after an event?
• Thermal limits for transmission line power transfers are based on what?