NERC SOS Quiz – Quiz Questions with Answers

NERC SOS quiz Questions & Answer key


Regulation of other services related to control performance

If a Balancing Authority
does not comply with the
Control Performance
Standard, the Balancing
Authority is not permitted to
provide which of the
following for any other
Balancing Authority entities?



Burden
1. It is the obligation of each
Balancing Authority to fulfill
its commitment to the
Interconnection and not
________ the other
balancing Authorities in the
Interconnection


The Balancing Authority's Frequency Bias Setting shall be
modified to reflect the combined Frequency Bias Setting of
both Balancing Areas.
A Balancing Authority is
performing Overlap
Regulation Service for
another Balancing Authority.
Which of the following
statements applies to the
Balancing Authority
providing this service?

, NERC SOS quiz Questions & Answer key
Increase MW output


Balancing Authority A is
currently reading a system
frequency of 59.95 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,
Balancing Authority A's
AGC is pulsing its
generators to do what?




BAAL
Which of the following is a
Real-time measurement of a
Balancing Authority's
control performance

Control performance
Each Balancing Authority
shall monitor which of the
following against two
standards: CPS1 and BAAL?


Negative ACE when frequency is high,
In the calculating of CPS1, positive ACE when frequency is low.
which of the below
conditions would contribute
to ta favorable score?


A- The ACE will be a negative value and AGC will
increase generation
If the frequency bias setting
is a higher value than the
frequency response of a
Balancing Authority and a
frequency decline is caused
by a sudden loss of
generation is an external
balancing area, what will be
the result?

, NERC SOS quiz Questions & Answer key
The Responsible Entity shall operate such that its CPS1 is
Which statement best greater than or equal to 100% for the preceding 12 month
describes the CPS1 period.
requirement?

CPS1 greater than or equal to 100% and ACE does not
exceed the BAAL more than 30 consecutive minutes
To be in compliance with the
BAL-001 requirements, a
Balancing Authority must
have which of the following?


The BA is helping the Interconnection Frequency.

Actual System Frequency
(FA) is 60.03 Hz, a
Balancing Authority is
under-generating slightly to
prepare for an upcoming
interchange transaction.
What is the Balancing
Authority doing?



10B (FA-FS)




You are a Balancing
Authority Operator. A
neighboring Balancing
Authority in the
Interconnection suddenly
had a 500 MW generator to
trip off line by generator
differential. What part of the
ACE equation,
ACE = (NIA-NIS) - 10B
(FA-FS) - IME, allows you
and other Balancing
Authorities in the
Interconnection to contribute
to the stabilization of the
Interconnection frequency
error?

, NERC SOS quiz Questions & Answer key
120 MW



In your Interconnection, a
generator tripped that was
large enough to reduce the
frequency from 60.000 Hz to
59.940 Hz. Your Balancing
Authority's Frequency Bias
is 200 MW/0.1 Hz. How
many MW would your
system initially contribute to
frequency support?




Represent flow of a tie line with an out of service meter.
Which of the following
would be a use of the IME
portion of the ACE equation?


The limit gets more restrictive.
What happens to the
Balancing Authority ACE
Limit (BAAL) when
frequency moves farther
away from scheduled
frequency?


By adding the individual FRO's of each member.
How is the Frequency
Response Obligation (FRO)
of a Frequency Response
Sharing Group determined?


No
A Balancing Authority has
an ACE reading of -100MWs
and frequency is 60.12 Hz. Is
the BA exceeding the
BAAL?