5.1

  1. When may an operator place a station on local control and perform necessary switching without first contacting the
    Load Dispatcher
    1. To avoid personal injuries or additional personal injuries to any person who may be in contact with or in proximity to an energized conductor, or who is in immediate hazard from any other source.

    2. To de-energize faulty equipment for the time necessary to isolate it when failure to do so would allow hazardous conditions to exist
  2. When is it necessary to manually shed load
    When automatic under frequency load shedding fails, and the system frequency remains at or below 57.0 hertz, take the station on local and shed load one section at time until the system recovers
  3. True/False

    If a transmission circuit (a circuit at 69kV or above) relays or becomes de-energized for any reason other than planned switching, Contact the Load Dispatcher immediately
    True
  4. If a transmission circuit internal to the DWP system relays and
    becomes or remains energized from the remote end, take the station on local control and reclosed the circuit if all of the following exist
    • 1. The circuit is internal to the DWP power system
    • 2. An OK TO WORK HOT WITH A HOLD IN CASE OF RELAY
    • is not in effect on the circuit.
    • 3. The circuit is in synchronism.
  5. When the synchroscope is stationary and indicates an angular displacement of less than 18 degrees.
    synchronism
  6. True/False

    You may perform emergency switching if switchboard instruments indicate the failure of relay protection or
    other equipment to clear a sustained fault on a circuit or equipment
    True
  7. If you are the Operator at the de-energized radially fed station, you are authorized to:
    Call the Operator having control of the high-side CBs of the de-energized and available circuit and transformer. If the controlling station is unattended, call the OCC and request an Operator for the controlling station. Re-energize the de-energized station and restore service
Author
Benjammincash
ID
355397
Card Set
5.1
Description
Emergency Switching and Reporting
Updated