NERC EXAM ANSWER KEY
ACE equation (NIA-NIS)-10B(fa-fs)-IME
Net Interchange sum of all interchange schedules
Scheduled (NIS)
Net Interchange Schedule sum of all interchange schedules
(NIS)
multiplier for frequency 10
bias is _______
represented as a negative number in ACE Calculation
and reflects area natural response to frequency
changes (Inertia, governor & load). Is at least 1% of
frequency bias (B) peak load for areas with native load & 1% if peak
generation output of area with no load.
30 mins
If unable to calculate ACE
for ________ contact the
RC.
Frequency and ACE drop and tie-line flows increase
what happens when you into your system
have internal generation
lost?
what happens with Frequency Drop with no change in ACE and net ti-line
external generation lost? flows increase out of your system.
Internal loss of load Frequency and ACE increase
External loss of load Frequency increases with no change in ACE
Frequency Actual (fa)
normally 60HZ except for time corrections +/- .02HZ
Frequency Schedule (fs)
tie-line data is unavailable/ islanded situations
Flat Frequency (Constant
Frequency) is used when
frequency data is unavailable - restoration
Flat Tie-Line (Constant
Frequency) is used when
sum of all tie-line values
Net Interchange Actual
(NIA)
, NERC EXAM ANSWER KEY
sum of all tie-line values
Net Interchange Actual
(NIA)
10
Multiplier for frequency
Bias
for both tie-line and frequency data and used at all
Tie-Line Bias (Tie-Line
Frequency Bias) is used times unless detrimental to operation of system.
EEA 1
Under what EEA is all
available resources in
service and concern with
maintaining reserves.
Requiring actions to
attempt to boost supply,
bring In generation,
reduce non-firm exports
and purchase
interchange?
EEA 2
What EEA includes
anticipating the lack of
ability to meet demand,
attempt to reduce
obligation, voltage
reduction & public appeal?
EEA 3
Under what EEA is the
interruption of firm load
imminent?
EEA 3
Under what EEA includes
shedding load?
generation increases or load decreases
Frequency increases
when
generation decreases or load increases
Frequency decreases
when
1 hr
Time error correction must
be run for a min of
_______ once started
ACE equation (NIA-NIS)-10B(fa-fs)-IME
Net Interchange sum of all interchange schedules
Scheduled (NIS)
Net Interchange Schedule sum of all interchange schedules
(NIS)
multiplier for frequency 10
bias is _______
represented as a negative number in ACE Calculation
and reflects area natural response to frequency
changes (Inertia, governor & load). Is at least 1% of
frequency bias (B) peak load for areas with native load & 1% if peak
generation output of area with no load.
30 mins
If unable to calculate ACE
for ________ contact the
RC.
Frequency and ACE drop and tie-line flows increase
what happens when you into your system
have internal generation
lost?
what happens with Frequency Drop with no change in ACE and net ti-line
external generation lost? flows increase out of your system.
Internal loss of load Frequency and ACE increase
External loss of load Frequency increases with no change in ACE
Frequency Actual (fa)
normally 60HZ except for time corrections +/- .02HZ
Frequency Schedule (fs)
tie-line data is unavailable/ islanded situations
Flat Frequency (Constant
Frequency) is used when
frequency data is unavailable - restoration
Flat Tie-Line (Constant
Frequency) is used when
sum of all tie-line values
Net Interchange Actual
(NIA)
, NERC EXAM ANSWER KEY
sum of all tie-line values
Net Interchange Actual
(NIA)
10
Multiplier for frequency
Bias
for both tie-line and frequency data and used at all
Tie-Line Bias (Tie-Line
Frequency Bias) is used times unless detrimental to operation of system.
EEA 1
Under what EEA is all
available resources in
service and concern with
maintaining reserves.
Requiring actions to
attempt to boost supply,
bring In generation,
reduce non-firm exports
and purchase
interchange?
EEA 2
What EEA includes
anticipating the lack of
ability to meet demand,
attempt to reduce
obligation, voltage
reduction & public appeal?
EEA 3
Under what EEA is the
interruption of firm load
imminent?
EEA 3
Under what EEA includes
shedding load?
generation increases or load decreases
Frequency increases
when
generation decreases or load increases
Frequency decreases
when
1 hr
Time error correction must
be run for a min of
_______ once started
