PJM Generation Operation Exam 2025
Latest Update
Control center facilities must have a minimum of how many days of fuel for the backup
generator? - ANSWER 5 days
If PJM ACE shows overgeneration, actual imports are: - ANSWER Less than scheduled
Who should a generator contact at PJM to clear an outage ticket? - ANSWER Master
Coordinator
To correct for a slow or fast clock, system frequency schedules are offset by: -
ANSWER +/-.02 Hz
What frequency would PJM set to correct for fast-time error? - ANSWER 59.98Hz
What frequency would PJM set to correct for slow-time error? - ANSWER 60.02Hz
What info is on an instantaneous reserve check? - ANSWER synchronized (regulating
and non-regulating), quick start, secondary and beyond secondary reserves
Generators must provide PJM with a realistic Reactive Capability Curve. This curve
must have no less than __ points, and no more than __ points. - ANSWER No less than
2 and no more than 8 points
A classic indicator of voltage instability is when system voltages change greatly when...
- ANSWER system loads change by a small amount
Above the line of a D-curve... - ANSWER Lagging (pushing VARs). Generators will be
set there during high-load/low voltage conditions.
Below the line of a D-curve... - ANSWER Leading (absorbing VARs). Generators will be
set there during low load/high voltage conditions.
MWs and MVARs have what kind of relationship? - ANSWER Inverse (increase in MW
= decrease in MVARs)
How often do generators need to test reactive power capability? - ANSWER Every 5
years
The computer hardware and software at each control center shall achieve an availability
level of what for those reliability functions directly affect the successful operation of
PJM? - ANSWER 99.95%
, What is EHV? - ANSWER Extra high voltage. Classified as 345kv and above
Any generator that is a PJM generation capacity resource that has an RPM Resource
Commitment: - ANSWER 1. Must submit an offer schedule into the DA market even if it
is self-scheduled or unavailable due to outage
2. Generation capacity resources shall submit:
-A schedule of availability for the next seven days
-May submit non-binding offer prices for the days beyond the next Operating Day
What time period is the Market Participant Bid/Offer Period? - ANSWER 0800-1100
What time are DA Market results posted? - ANSWER 1330
What time period is the re-bid period? - ANSWER 1330-1415
What is the maximum for a generation capacity resource offer? - ANSWER $2000/MWh
What is the cap for price-based offers? - ANSWER Price-based offers will be capped at
the lower of $2000/MWh or the corresponding cost-based offer when costs are above
$1000/MWh
Example:
If a unit's cost is $1500, the price offer can be no higher than $1500
If $800, price offer can be no higher than $1000
If $2200, price offer can be no higher than $2000
What are the real-time data requirements for a Mixed Technology Facility that is directly
connected to PJM transmission and has a Maximum Facility Output of 75MW or
greater, or otherwise is a BES generator? - ANSWER MW and MVAR must be
measured at the high-side of the generator step-up transformer. If the transformer is
modeled in the PJM EMS (e.g., for units 20MW and greater), MW and MVAR must also
be measured at the low-side of the generator step-up transformer
If a unit's commit status is set to Must Run it indicates that the generating unit is... -
ANSWER self-scheduling. The unit must be committed.
When is the DA market rebid period? - ANSWER 1330-1415
Resources that are opted-in to intraday offers may make changes beginning... -
ANSWER at 1830 the previous day up to 65 minutes before the operating hour
What time is the deadline for participants to submit bids and offers in the DA Energy
Market? - ANSWER 1100
Latest Update
Control center facilities must have a minimum of how many days of fuel for the backup
generator? - ANSWER 5 days
If PJM ACE shows overgeneration, actual imports are: - ANSWER Less than scheduled
Who should a generator contact at PJM to clear an outage ticket? - ANSWER Master
Coordinator
To correct for a slow or fast clock, system frequency schedules are offset by: -
ANSWER +/-.02 Hz
What frequency would PJM set to correct for fast-time error? - ANSWER 59.98Hz
What frequency would PJM set to correct for slow-time error? - ANSWER 60.02Hz
What info is on an instantaneous reserve check? - ANSWER synchronized (regulating
and non-regulating), quick start, secondary and beyond secondary reserves
Generators must provide PJM with a realistic Reactive Capability Curve. This curve
must have no less than __ points, and no more than __ points. - ANSWER No less than
2 and no more than 8 points
A classic indicator of voltage instability is when system voltages change greatly when...
- ANSWER system loads change by a small amount
Above the line of a D-curve... - ANSWER Lagging (pushing VARs). Generators will be
set there during high-load/low voltage conditions.
Below the line of a D-curve... - ANSWER Leading (absorbing VARs). Generators will be
set there during low load/high voltage conditions.
MWs and MVARs have what kind of relationship? - ANSWER Inverse (increase in MW
= decrease in MVARs)
How often do generators need to test reactive power capability? - ANSWER Every 5
years
The computer hardware and software at each control center shall achieve an availability
level of what for those reliability functions directly affect the successful operation of
PJM? - ANSWER 99.95%
, What is EHV? - ANSWER Extra high voltage. Classified as 345kv and above
Any generator that is a PJM generation capacity resource that has an RPM Resource
Commitment: - ANSWER 1. Must submit an offer schedule into the DA market even if it
is self-scheduled or unavailable due to outage
2. Generation capacity resources shall submit:
-A schedule of availability for the next seven days
-May submit non-binding offer prices for the days beyond the next Operating Day
What time period is the Market Participant Bid/Offer Period? - ANSWER 0800-1100
What time are DA Market results posted? - ANSWER 1330
What time period is the re-bid period? - ANSWER 1330-1415
What is the maximum for a generation capacity resource offer? - ANSWER $2000/MWh
What is the cap for price-based offers? - ANSWER Price-based offers will be capped at
the lower of $2000/MWh or the corresponding cost-based offer when costs are above
$1000/MWh
Example:
If a unit's cost is $1500, the price offer can be no higher than $1500
If $800, price offer can be no higher than $1000
If $2200, price offer can be no higher than $2000
What are the real-time data requirements for a Mixed Technology Facility that is directly
connected to PJM transmission and has a Maximum Facility Output of 75MW or
greater, or otherwise is a BES generator? - ANSWER MW and MVAR must be
measured at the high-side of the generator step-up transformer. If the transformer is
modeled in the PJM EMS (e.g., for units 20MW and greater), MW and MVAR must also
be measured at the low-side of the generator step-up transformer
If a unit's commit status is set to Must Run it indicates that the generating unit is... -
ANSWER self-scheduling. The unit must be committed.
When is the DA market rebid period? - ANSWER 1330-1415
Resources that are opted-in to intraday offers may make changes beginning... -
ANSWER at 1830 the previous day up to 65 minutes before the operating hour
What time is the deadline for participants to submit bids and offers in the DA Energy
Market? - ANSWER 1100
