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PJM Generation Dispatcher Exam Practice Questions and Answers 2024
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PJM Generation Dispatcher Exam Practice
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PJM Generation Dispatcher ExamPractice
An EXCITER on a traditional generator does what? - answerVoltage regulation (AVR) if
you change the excitation current, you change the voltage.
ECO Min, ECO Max, and EMERG Max are genrator _________________. -
answerLimits
When synchronizing to the interconnection, what needs to be synchronized? -
answerFrequency, Voltage, and phase angle.
GMD (GeoMagnetic Disturbance) procedure is implemented when? - answer10A or
greater is measured by special equipment at Missouri Ave or Meadowbrook and the
measurement is confirmed by one of the following other sources: Excess transformer
current @ Meadowbrook, Beddington, Donbs, or Black Oak, high MVAR requirements
on transformers @ Hopw Creek or Salem nuclear subs, or high DC measurements @
Limerick or Peach Bottom.
What are the 2 types of National Terrorism Advisory Alerts? - answerElevated and
Imminent.
What action does PJM take for a terrorist attack, fuel delivery emergency, or GMD's? -
answerConservative Operations
What does PJM put the most emphasis on during a terrorist/sabotage event? -
answerOperations and Communications
What does PJM request during a low voltage alert? - answerRRC - reactive reserve
check
PJM issues a Heavy Load Voltage Warning how many hours prior to implementation? -
answer4 hours
What should generation owners/operators do during a High System Voltage Action? -
answerOperate at the lower bandwidth of the voltage schedule.
How many hours do you have to report a 24-hr reportable NERC disturbance? -
answer6 hours
, What report is generated during a Max Emergency Gen Alert? - answerSSR -
Supplementary Status Report
What part of the SSR is the Fuel Limited Resources accounted for? - answerPart G
Resource Limited Units which are units that are not able to run at max capacity for more
than 72 hours.
What kind of Emergency Procedures occur during real time operating hours? -
answerActions
What is the per Unit (p.u.) for a 345 kV nominal voltage that is currently at 348 kV? -
answer348/345 = 1.008 pu
What is the Emergency Reducible Generation (ERG) if the Eco Min is 100 and the
Emergency Min is 75? - answerEco Min - Emerg Min = 25MW
How many Black Start units are required for critical load/TO zone? - answer2 Black
Start units
What is the minimum amount of hours for fuel supply for Black Start units? - answer10
hours, must notify PJM when it reaches that level.
Regulation must be attainable within how many minutes? - answer5
ACE - Area Control Error is used to balance what 2 things? - answerGeneration and
Load
If your ACE in your control area is -1500, what would you do? - answer100% spinning
(synchronized) reserves
Synchronized reserves is generation output from a synchronized resource that can be
increased w/in 10 min or? - answerReduction in load from a synchronized resource w/in
10 min.
When data exchange between PJM and Member Company is not available what will
PJM do? - answerManual Dispatch
The satellite phone test is required of generator operating control centers with one or
more units totaling how many MW's? - answer500 MW
What is the maximum overall inaccuracy allowed for data exchange? - answer2%
What size generating units must provide instantaneous power and reactive flow data? -
answer10 MW and above
How often must PJM be updated for manually entered data? - answer30 min
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