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PJM Generation Dispatcher Exam Practice Questions, Study Guides, Projects, Research of Power Electronics

Virginia State University (VSU)Power Electronics

A comprehensive set of practice questions for the pjm generation dispatcher exam. It covers a wide range of topics related to power system operation, including voltage regulation, synchronization, emergency procedures, and reactive power management. The questions are designed to test the candidate's understanding of key concepts and their ability to apply them in real-world scenarios.

Typology: Study Guides, Projects, Research

2024/2025

Available from 03/17/2025

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PJM Generation Dispatcher Exam Practice
1. An EXCITER on a traditional generator does what?: Voltage regulation (AVR) if you change the
excitation current, you change the voltage.
2. ECO Min, ECO Max, and EMERG Max are generator .: -
Limits
3. When synchronizing to the interconnection, what needs to be synchro- nized?: Frequency,
Voltage, and phase angle.
4. GMD (GeoMagnetic Disturbance) procedure is implemented when?: 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.
5. What are the 2 types of National Terrorism Advisory Alerts?: Elevated and Imminent.
6. What action does PJM take for a terrorist attack, fuel delivery emergency, or GMD's?: Conservative
Operations
7. What does PJM put the most emphasis on during a terrorist/sabotage event?: Operations
and Communications
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Download PJM Generation Dispatcher Exam Practice Questions and more Study Guides, Projects, Research Power Electronics in PDF only on Docsity!

PJM Generation Dispatcher Exam Practice

1. An EXCITER on a traditional generator does what?: Voltage regulation (AVR) if you change the

excitation current, you change the voltage.

2. ECO Min, ECO Max, and EMERG Max are generator .: -

Limits

3. When synchronizing to the interconnection, what needs to be synchro- nized?: Frequency,

Voltage, and phase angle.

4. GMD (GeoMagnetic Disturbance) procedure is implemented when?: 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.

5. What are the 2 types of National Terrorism Advisory Alerts?: Elevated and Imminent.

6. What action does PJM take for a terrorist attack, fuel delivery emergency, or GMD's?: Conservative

Operations

7. What does PJM put the most emphasis on during a terrorist/sabotage event?: Operations

and Communications

8. What does PJM request during a low voltage alert?: RRC - reactive reserve check

9. PJM issues a Heavy Load Voltage Warning how many hours prior to imple- mentation?: 4 hours

10. What should generation owners/operators do during a High System Volt- age Action?: Operate

at the lower bandwidth of the voltage schedule.

11. How many hours do you have to report a 24-hr reportable NERC distur- bance?: 6 hours

12. What report is generated during a Max Emergency Gen Alert?: SSR - Supplementary Status

Report

13. What part of the SSR is the Fuel Limited Resources accounted for?: Part G Resource Limited

Units which are units that are not able to run at max capacity for more than 72 hours.

14. What kind of Emergency Procedures occur during real time operating hours?: Actions

15. What is the per Unit (p.u.) for a 345 kV nominal voltage that is currently at 348 kV?: 348/345 =

1.008 pu

16. What is the Emergency Reducible Generation (ERG) if the Eco Min is 100 and the Emergency

Min is 75?: Eco Min - Emerg Min = 25MW

17. How many Black Start units are required for critical load/TO zone?: 2 Black Start units

18. What is the minimum amount of hours for fuel supply for Black Start units?: 10 hours,

must notify PJM when it reaches that level.

19. Regulation must be attainable within how many minutes?: 5

.: Limits

32. What time is the rebidding period for the DA market?: 4 - 6 pm

33. Who specifies the voltage/reactive power schedule?: TO - transmission owner

34. PJM requires generators that are greater than what level to follow a voltage schedule?: 20 MVA or

aggregated 75 MVA

35. PJM sends what signals to Market Operation Centers?: ACE, Regulation, and Dispatch

36. PJM instructs your Generator to come online. From what time to the time it is running?:

Notification time + Time to start

37. Operating reserves consists of what?: Synchronized reserves, non-synchro- nized reserves (quick

start), and supplemental reserves (secondary)

38. Regulating units (demand response resources) provide a variable amount of generation under

automatic control to provide what?: Correction for small deviations in load.

39. Where's the ideal point for regulation to operate?: Midpoint

40. What type of outage may be deferred to beyond the next weekend or can be postponed to the

following Mon morning at 0800?: Maintenance outage

41. How long is a maintenance outage during PPM- Peak Period Maintenance?-

: 9 days

42. How long is a maintenance outage during non-Peak Period Maintenance?-

: Unlimited

43. When ambient temperatures are low, what happens to CT operation?: MW increased as

temperature decreases.

44. What is the maximum amount of reactive power increments put onto the grid during a reactive

power capability test at one time?: 100 MVAR

45. Who can authorize a voltage schedule change?: TO - Transmission Owner

46. How many days prior must you put in for a reactive capability test request in eDart?: No later

than 3 business days prior to the test.

47. What size generators are required to perform reactive capability tests?: >= 20 MW >= 75MW

48. What black start generation is restored before request for customer load?-

: Cranking power for combustion turbines.

49. How often are Black Start units tested?: Yearly/annualy

50. Black start unit must be able to close onto a dead bus in how many hours?: 3

51. Who has to fill out restoration forms?: Generator and Transmission owners

52. How often does a generator owner need to report restoration information via restoration form?:

Hourly

53. What information is included in a restoration form for Generation?: Units online and future

54. How often does transmission owner need to report restoration informa- tion?: Every 30 min or

10 lines restored