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Emergency Response & System Restoration Procedures 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 Emergency Response & System Restoration Procedures flashcards as text

  1. What does 'load shedding' accomplish during a generation deficiency emergency?

    Answer: It reduces system demand to balance generation and arrest frequency decline

    Load shedding reduces total system demand to match available generation, stabilizing frequency and preventing a complete system collapse.

  2. A 'sectionalizing' switch used during emergency restoration is operated to:

    Answer: Isolate a faulted section and restore supply to unfaulted portions of the feeder

    Sectionalizing switches allow operators to isolate the faulted segment of a circuit and then re-energize the healthy sections from alternate supply points.

  3. NERC EOP-006 addresses:

    Answer: Restoration coordination between Transmission Operators and Balancing Authorities

    EOP-006 defines the roles and coordination requirements between Transmission Operators and Balancing Authorities during system restoration activities.

  4. During high system stress, a Transmission Operator observes voltage collapse beginning in one area. The most effective short-term corrective action is:

    Answer: Rapidly increase reactive support (generators, SVCs, capacitors) in the affected area and reduce reactive-consuming load

    Voltage collapse is driven by reactive power deficit; immediate injection of reactive support arrests the collapse before it propagates.

  5. A 'generation trip' event causing sudden loss of 1,200 MW will cause system frequency to:

    Answer: Drop immediately as the generation-load balance is upset

    Loss of generation causes an immediate frequency drop as the remaining inertia decelerates trying to supply the unchanged load.

  6. Which document defines the specific cranking path and load pickup steps a Balancing Authority must follow during system restoration?

    Answer: System Restoration Plan (SRP) required by EOP-005

    NERC EOP-005 requires each Transmission Operator and Balancing Authority to maintain a documented System Restoration Plan detailing cranking paths, black start resources, and load pickup sequences.

  7. What is the primary hazard of energizing a long unloaded EHV transmission line during restoration?

    Answer: Ferranti effect causing receiving-end voltage to rise dangerously above sending-end voltage

    The Ferranti effect occurs on long lightly-loaded lines where the distributed capacitance charges from the source and can raise remote-end voltage significantly above the sending-end voltage.