Practice Test Geeks(SOPD) System Operator/Power Dispatching Practice Test
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Power System Operations Flashcards

7 cards from real SOPD practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Power System Operations flashcards as text

  1. What is the primary purpose of Automatic Generation Control (AGC) in an interconnected power system?

    Answer: To balance generation and load while maintaining scheduled tie-line flows

    AGC continuously adjusts generator output to match load changes and maintain scheduled interchange with neighboring control areas.

  2. A power system operator observes that the Area Control Error (ACE) is persistently positive. What corrective action should be taken?

    Answer: Decrease generation output within the control area

    Positive ACE indicates the area is generating more than scheduled, so generation must be reduced to restore balance.

  3. Which NERC reliability standard governs the Control Performance Standard (CPS) requirements for balancing authorities?

    Answer: BAL-001

    BAL-001 establishes the real power balancing requirements including CPS compliance for balancing authorities.

  4. During an N-1 contingency analysis, what does the 'N' represent?

    Answer: The normal pre-contingency system state with all elements in service

    N represents the intact system with all components in service, and N-1 means the loss of any single element.

  5. What is the function of a phase angle regulator (PAR) in transmission system operations?

    Answer: To control real power flow on a transmission line by introducing a phase angle shift

    A PAR inserts a controllable phase angle difference between its terminals to regulate active power flow on parallel paths.

  6. When a transmission line is de-energized for maintenance, what is the correct sequence for a safe outage?

    Answer: Open the breakers, apply grounds, issue clearance

    The correct sequence is to open and lock the breakers first, then apply protective grounds, and then issue the clearance to the maintenance crew.

  7. What is 'reactive power scheduling' primarily intended to accomplish in a high-voltage transmission system?

    Answer: Maintain acceptable voltage profiles across the transmission network

    Reactive power scheduling coordinates VAR sources and sinks to keep bus voltages within acceptable operating limits throughout the network.