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NERC RC Exam Prep
NERC RC Exam Prep — Comprehensive certification preparation resource designed to help candidates prepare for the North American Electric Reliability Corporation (NERC) Reliability Coordinator (RC) exam. Covers key topics including power system operations, reliability standards, transmission operations, emergency procedures, contingency analysis, voltage control, balancing authority responsibilities, and system restoration practices. Includes practice questions, scenario-based learning, and concept reviews aimed at strengthening operational decision-making, technical knowledge, and exam readiness for reliability coordination professionals
A Balancing Authority is slightly undergenerating its Actual System Frequency (FA) is 60.03 Hz. What is the result of the Balancing Authority's action?
A. The Balancing Authority is helping the Interconnection Frequency. B. The Balancing Authority is in CPS1 violation. C. The Balancing Authority is hurting the Interconnection Frequency. D. The Balancing Authority is in BAAL violation
A. The Balancing Authority is helping the Interconnection Frequency
Which of the following terms applies to the Western Interconnection only, and the addition of a component to the ACE equation that modifies the control point for the purpose of continuously paying back Primary Inadvertent Interchange to correct accumulated time error?
A. Reporting ACE B. Automatic Time Error Correction C. Reserve Sharing Group Reporting ACE D. Regulation Reserve Sharing Group
B. Automatic Time Error Correction
You are a Balancing Authority Operator. A neighboring Balancing Authority in the Interconnection suddenly has a 500 MW generator trip due to a generator ground. What part of the ACE equation, ACE = (NIA-NIS) - 10B (FA-FS) - IME, allows you and other Balancing Authorities in the Interconnection to help stabilize the Interconnection frequency error?
A. (FA- FS) - IME B. NIA - NIS C. 10B (FA-FS) D. 4 IME
C. 10B (FA-FS)
Which of the following elements is NOT included in the ACE equations frequency component?
A. Actual Frequency (FA) B. Scheduled Frequency (FS) C. Frequency Bias Setting (B) D. Meter Error (IME)
D. Meter Error (IME)
When does the Contingency Reserve Restoration Period begin?
A. At the top of the hour after the Reportable Disturbance B. At the start of the Reportable Disturbance C. At the end of the Disturbance Recovery Period D. When all Contingency Reserve has been exhausted
C. At the end of the Disturbance Recovery Period
A Balancing Authority's CPS1 calculation is computed using its clock- minute average of two values. What are those two values?
A. Reporting ACE and Frequency Error B. Actual and Scheduled Net Interchange NIA and NIS. C. L10 and Reporting ACE D. Actual and Scheduled Frequency (FA and FS)
A. Reporting ACE and Frequency Error
To conform to CPS requirements, a Balancing Authority must have which of the following?
A. CPS1 greater than or equal to 90% or BAAL greater than or equal to 100%. B. CPS1 greater than or equal to 100% and ACE does not exceed BAAL more than 15 consecutive minutes. C. CPS1 greater than or equal to 100% and ACE does not exceed BAAL more than 30 consecutive minutes. D. CPS1 greater than or equal to 90% and ACE does not exceed BAAL more than 30 consecutive minutes.
C. CPS1 greater than or equal to 100% and ACE does not exceed BAAL more than 30 consecutive minutes.
Which of the following is a potential source of Contingency Reserve?
- Offline generation that takes 10 minutes to start and ramp to full output
- Online generation at full load
- Controllable load resources
- Voltage reductions
A. 3 and 4 B. 2 and 3 C. 1 and 3 D. 1 and 2
C. 1 and 3
In an Interconnection, which of the following is required to be in the metered boundaries of a Balancing Authority Area?
A. Generation B. Transmission C. Load D. All are required to be within the metered boundaries of a Balancing Authority.
D. All are required to be within the metered boundaries of a Balancing Authority.
A Balancing Authority has a normal load of around 8500 MW. Its most severe single contingency is a 700 MW coal-fired steam unit. At 0810, the ACE value was at -55 MW when a 600 MW generator in the Balancing Authority's northern area tripped off line due to a generator differential. This event resulted in a large negative ACE for the Balancing Authority. What value must ACE return to and in what time frame to avoid a DCS violation?
A. -55 MW ACE in 15 minutes B. Zero ACE in 10 minutes C. -55 MW ACE in 10 minutes D. Zero ACE in 15 minutes
A. -55 MW ACE in 15 minutes
If a Reserve Sharing Group member has experienced a Reportable Disturbance condition but does not call for reserve activation from other members, the entire group is considered to be in a disturbance condition.
A. True B. False
B. False
Automatic Generation Control uses the ACE equation to ________.
A. Minimize Inadvertent Interchange among Balancing Authority areas B. Provide frequency support for the Interconnection C. Both answers are correct D. Neither answer is correct
C. Both answers are correct
Which part of the ACE equation reflects Pseudo-Ties values?
A. Scheduled Net Interchange component, NIS B. Actual Net Interchange component, NIA C. Frequency component, FA - FS D. Pseudo-Ties are not included in the ACE equation.
B. Actual Net Interchange component, NIA
