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PJM Exam Questions and Answers 100% Solved | Graded A+

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PJM Exam Questions and Answers 100% Solved | Graded A+ Leading phase when current is ... - Capacitive What is the minimum passing score for a unit regulation test? - 75% compliance with the test signal What generation is available within 10 minutes for offline reserves? - Quick-start How doe...

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  • November 1, 2024
  • 47
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Pjm
  • Pjm
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©NINJANERD 2024/2025. YEAR PUBLISHED 2024.
PJM Exam Questions and Answers 100%

Solved | Graded A+


Leading phase when current is ... - ✔✔Capacitive

What is the minimum passing score for a unit regulation test? - ✔✔75%

compliance with the test signal

What generation is available within 10 minutes for offline reserves? -

✔✔Quick-start

How does PJM avoid dealing with economic issues during transmission

related constraints? - ✔✔Cost (offer) capping generation

Which balancing control mode is used by PJM under normal operations? -

✔✔Tie-line bias

Three modes of control available to PJM dispatcher (ACE control modes) -

✔✔Flat Frequency Control, Flat Tie Line Control, Tie Line Bias Control

What is flat frequency control? - ✔✔Utilizes only power system frequency

as the controlling parameter; only responds to frequency deviations; only

,©NINJANERD 2024/2025. YEAR PUBLISHED 2024.
applicable when PJM balancing area is isolated from the Eastern

Interconnection

What is flat tie line control? - ✔✔Utilizes only interconnection tie line flow as

the controlling parameter; only responds to net tie flow deviations & does

not adjust operation for any frequency deviations; limited to special

circumstances

What is tie line bias control? - ✔✔most widely used mode of control for

multi-balancing area power systems; responds to both frequency & net tie

line flow deviations

In order to lower system voltage, what must be done with MVAR to

decrease MW? - ✔✔Decrease MVAR

What is PJM's regulation requirement during a system restoration? - ✔✔2%

of current load

What frequency causes a system black out? - ✔✔57.5 Hz or lower

What is the threshold to be considered part of the BES? - ✔✔100 kV or

greater

What is the Bulk Electric System (BES)? - ✔✔The electrical generation

resources, transmission lines, interconnections with neighboring systems,

& associated equipment generally operated at voltages 100 kV or higher

,©NINJANERD 2024/2025. YEAR PUBLISHED 2024.
What are the limits that must be submitted to PJM for generating units? -

✔✔Eco min, Eco max, Emergency Max

During severe geomagnetic activity (>10 amperes at Missouri Ave or

Meadowbrook facility) what should be immediately implemented? -

✔✔Conservative operation

What are additional triggers for conservative operations? - ✔✔fuel delivery

issues, forest/brush fires, environmental alerts, bad weather, terrorist or

sabotage threats against the BES, actual attacks against critical assets,

PJM entering an "unknown operating state"

What is conservative operations? - ✔✔PJM must implement additional

actions under certain events, conditions, or circumstances to ensure the

BES remains reliable in the face of threats

What problems usually occur during minimum generation conditions? -

✔✔Excess generation online & high voltage

When is a unit cost capped? - ✔✔During transmission related constraints

What is cost capping? - ✔✔Principles used by PJM when considering cost

containment provisions; all offers (cost & price) capped at $1,000/MWh by

default and offers over will need verification

, ©NINJANERD 2024/2025. YEAR PUBLISHED 2024.
If SCADA and ICCP go down, where should data be updated? - ✔✔EMS

(Energy Management System)

How often is reactive testing completed? - ✔✔Every 5 years

What mechanical device controls deviations in voltage? - ✔✔Load tap

changer

If a generator cannot maintain its voltage schedule, who has the authority

to approve a replacement schedule? - ✔✔Transmission Owner

What two elements does PJM use to consider for load forecasting? -

✔✔Weather & day of the week

During system restoration, a generator should not be loaded above what

level? - ✔✔Dynamic Reserve

What is the dynamic reserve? - ✔✔the amount of reserve that is available

to preserve the system during a frequency disturbance; consists of reserve

on generators & load with underfrequency relaying

What unit is allowed to set LMP? - ✔✔A unit that is dispatched for

constraint control

At what fuel limit must PJM be notified for a black start unit? - ✔✔10 hours

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