SOS NERC PREP – RELIABILITY Latest Exam
(QUESTIONS WITH VERIFIED ANSWERS) A+
GRADED
The Reliability Coordinator just informed you of a slow time error correction which will begin at the top
of the next hour. Your EMS system will not let you change your scheduled frequency. Your Frequency
Bias Setting is -100 MW/.1Hz. What action should you take?
A) Increase Net Interchange Schedule by 20 MWs.
B) Inform the Reliability Coordinator that you cannot participate in the time error correction.
C) Decrease Net Interchange Schedule by 20 MWs.
D) Increase Net Interchange Schedule by 10 MWs.
A) Increase Net Interchange Schedule by 20 MWs.
A Balancing Authority has a sudden loss of a large block of load in its area. This loss will be seen
instantaneously in the change of which of the following values?
1. Actual Net Interchange
2. Scheduled Frequency
3. Scheduled Net Interchange
4. Area Control Error
,SCORE MORE
A) 4 only
B) 1 & 3
C) 1 & 4
D) 3 & 4
C) 1 & 4
Metered Data included in the calculation of ACE are: dynamic schedules, pseudo ties, actual frequency,
and all __________.
A) Tie lines readings
B) Generators output
C) Scheduled frequency indications
D) Transformer load
A) Tie lines readings
Balancing Authority A is currently reading a system frequency of 60.00 Hz. Its Net Actual Interchange is
+100 MW and its Net Scheduled Interchange is +200 MW. If Balancing Authority A's frequency bias
setting is 100 MW/0.1 Hz, what is ACE?
A) -100
B) 0
C) 10
D) 100
A) -100
,SCORE MORE
A Balancing Authority has a Net Interchange Schedule of -250 MWs from 1200 to 1600 on a summer
day. The Net Interchange Actual for those same hours respectively were -230 MW, -275 MW, -250 MW
and -270 MW. What was the Balancing Authority's Inadvertent Interchange for the 4-hour period?
A) 6 MWs out
B) 25 MWs in
C) 25 MWs out
D) 6 MWs in
B) 25 MWs in
For the ACE equation to work properly, dynamic schedules, pseudo ties, frequency, and all
________________ must be metered.
A) Generation
B) Communications
C) Transformers
D) Tie lines
D) Tie lines
If the frequency bias setting is set to a less negative value than the frequency response of a Balancing
Authority and a frequency increase is caused by a sudden loss of load in an external balancing area,
what will be the result?
A) The ACE will be zero and will take no AGC action
B) The ACE will be a negative value and AGC will increase generation
C) The ACE will be a positive value and AGC will lower generation
, SCORE MORE
D)This will not affect the ACE
B) The ACE will be a negative value and AGC will increase generation
If the frequency bias setting is less negative than the frequency response of a Balancing Authority and a
frequency decline is caused by a sudden loss of generation in an external balancing area, what will be
the result?
A) The ACE will be a negative value and AGC will increase generation.
B) This will not affect the ACE.
C) The ACE will be a positive value and AGC will lower generation.
D) The ACE will be zero and will take no AGC action.
C) The ACE will be a positive value and AGC will lower generation.
It is the responsibility of which entity/entities to develop, maintain, and implement load shedding plans?
A) Transmission Operators and Balancing Authorities
B) Reliability Coordinator
C) Load Serving Entities
D) Balancing Authority
A) Transmission Operators and Balancing Authorities
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TOPMARKSOLUTIONS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $25.49. You're not tied to anything after your purchase.