PJM Generation Dispatcher Exam
Practice Questions And Answers
An EXCITER on a traditional generator does what? - (Correct Answer)
Voltage regulation (AVR) if you change the excitation current, you change
the voltage.
ECO Min, ECO Max, and EMERG Max are genrator _________________. -
(Correct Answer) Limits
When synchronizing to the interconnection, what needs to be
synchronized? - (Correct Answer) Frequency, Voltage, and phase angle.
GMD (GeoMagnetic Disturbance) procedure is implemented when? -
(Correct Answer) 10A 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? - (Correct
Answer) Elevated and Imminent.
What action does PJM take for a terrorist attack, fuel delivery emergency,
or GMD's? - (Correct Answer) Conservative Operations
What does PJM put the most emphasis on during a terrorist/sabotage
event? - (Correct Answer) Operations and Communications
What does PJM request during a low voltage alert? - (Correct Answer) RRC
- reactive reserve check
PJM issues a Heavy Load Voltage Warning how many hours prior to
implementation? - (Correct Answer) 4 hours
What should generation owners/operators do during a High System
Voltage Action? - (Correct Answer) Operate at the lower bandwidth of the
voltage schedule.
How many hours do you have to report a 24-hr reportable NERC
disturbance? - (Correct Answer) 6 hours
, What report is generated during a Max Emergency Gen Alert? - (Correct
Answer) SSR - Supplementary Status Report
What part of the SSR is the Fuel Limited Resources accounted for? -
(Correct Answer) Part 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? - (Correct Answer) Actions
What is the per Unit (p.u.) for a 345 kV nominal voltage that is currently at
348 kV? - (Correct Answer) 348/345 = 1.008 pu
What is the Emergency Reducible Generation (ERG) if the Eco Min is 100
and the Emergency Min is 75? - (Correct Answer) Eco Min - Emerg Min =
25MW
How many Black Start units are required for critical load/TO zone? -
(Correct Answer) 2 Black Start units
What is the minimum amount of hours for fuel supply for Black Start
units? - (Correct Answer) 10 hours, must notify PJM when it reaches that
level.
Regulation must be attainable within how many minutes? - (Correct
Answer) 5
ACE - Area Control Error is used to balance what 2 things? - (Correct
Answer) Generation and Load
If your ACE in your control area is -1500, what would you do? - (Correct
Answer) 100% spinning (synchronized) reserves
Synchronized reserves is generation output from a synchronized resource
that can be increased w/in 10 min or? - (Correct Answer) Reduction 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? - (Correct Answer) Manual Dispatch
The satellite phone test is required of generator operating control centers
with one or more units totaling how many MW's? - (Correct Answer) 500
MW
What is the maximum overall inaccuracy allowed for data exchange? -
(Correct Answer) 2%
Practice Questions And Answers
An EXCITER on a traditional generator does what? - (Correct Answer)
Voltage regulation (AVR) if you change the excitation current, you change
the voltage.
ECO Min, ECO Max, and EMERG Max are genrator _________________. -
(Correct Answer) Limits
When synchronizing to the interconnection, what needs to be
synchronized? - (Correct Answer) Frequency, Voltage, and phase angle.
GMD (GeoMagnetic Disturbance) procedure is implemented when? -
(Correct Answer) 10A 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? - (Correct
Answer) Elevated and Imminent.
What action does PJM take for a terrorist attack, fuel delivery emergency,
or GMD's? - (Correct Answer) Conservative Operations
What does PJM put the most emphasis on during a terrorist/sabotage
event? - (Correct Answer) Operations and Communications
What does PJM request during a low voltage alert? - (Correct Answer) RRC
- reactive reserve check
PJM issues a Heavy Load Voltage Warning how many hours prior to
implementation? - (Correct Answer) 4 hours
What should generation owners/operators do during a High System
Voltage Action? - (Correct Answer) Operate at the lower bandwidth of the
voltage schedule.
How many hours do you have to report a 24-hr reportable NERC
disturbance? - (Correct Answer) 6 hours
, What report is generated during a Max Emergency Gen Alert? - (Correct
Answer) SSR - Supplementary Status Report
What part of the SSR is the Fuel Limited Resources accounted for? -
(Correct Answer) Part 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? - (Correct Answer) Actions
What is the per Unit (p.u.) for a 345 kV nominal voltage that is currently at
348 kV? - (Correct Answer) 348/345 = 1.008 pu
What is the Emergency Reducible Generation (ERG) if the Eco Min is 100
and the Emergency Min is 75? - (Correct Answer) Eco Min - Emerg Min =
25MW
How many Black Start units are required for critical load/TO zone? -
(Correct Answer) 2 Black Start units
What is the minimum amount of hours for fuel supply for Black Start
units? - (Correct Answer) 10 hours, must notify PJM when it reaches that
level.
Regulation must be attainable within how many minutes? - (Correct
Answer) 5
ACE - Area Control Error is used to balance what 2 things? - (Correct
Answer) Generation and Load
If your ACE in your control area is -1500, what would you do? - (Correct
Answer) 100% spinning (synchronized) reserves
Synchronized reserves is generation output from a synchronized resource
that can be increased w/in 10 min or? - (Correct Answer) Reduction 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? - (Correct Answer) Manual Dispatch
The satellite phone test is required of generator operating control centers
with one or more units totaling how many MW's? - (Correct Answer) 500
MW
What is the maximum overall inaccuracy allowed for data exchange? -
(Correct Answer) 2%
