SOS NERC Prep - RElIABILITY Exam Questions and
Answers
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. ,.Y
our ,.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. ,.- ,.(correct ,.answer) ,.-
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 ,.see
n ,.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
A) ,.4 ,.only
B) ,.1 ,.& ,.3
,C) ,.1 ,.& ,.4
D) ,.3 ,.& ,.4 ,.- ,.(correct ,.answer) ,.-C) ,.1 ,.& ,.4
Metered ,.Data ,.included ,.in ,.the ,.calculation ,.of ,.ACE ,.are: ,.dynamic ,.schedules, ,.pseudo ,.ties, ,.actual ,.freq
uency, ,.and ,.all ,.__________.
A) ,.Tie ,.lines ,.readings
B) ,.Generators ,.output
C) ,.Scheduled ,.frequency ,.indications
D) ,.Transformer ,.load ,.- ,.(correct ,.answer) ,.-A) ,.Tie ,.lines ,.readings
Balancing ,.Authority ,.A ,.is ,.currently ,.reading ,.a ,.system ,.frequency ,.of ,.60.00 ,.Hz. ,.Its ,.Net ,.Actual ,.Interch
ange ,.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 ,.- ,.(correct ,.answer) ,.-A) ,.-100
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 ,.hou
rs ,.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 ,.- ,.(correct ,.answer) ,.-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 ,.- ,.(correct ,.answer) ,.-D) ,.Tie ,.lines
If ,.the ,.frequency ,.bias ,.setting ,.is ,.set ,.to ,.a ,.less ,.negative ,.value ,.than ,.the ,.frequency ,.response ,.of ,.a ,.Bal
ancing ,.Authority ,.and ,.a ,.frequency ,.increase ,.is ,.caused ,.by ,.a ,.sudden ,.loss ,.of ,.load ,.in ,.an ,.external ,.bala
ncing ,.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
D)This ,.will ,.not ,.affect ,.the ,.ACE ,.- ,.(correct ,.answer) ,.-
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 ,.Authorit
y ,.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. ,.- ,.(correct ,.answer) ,.-
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 ,.- ,.(correct ,.answer) ,.-A) ,.Transmission ,.Operators ,.and ,.Balancing ,.Authorities
A ,.Transmission ,.line ,.is ,.loaded ,.25% ,.above ,.its ,.SOL. ,.A ,.parallel ,.line ,.is ,.out ,.for ,.routine ,.maintenance ,.a
nd ,.can ,.be ,.placed ,.in ,.service ,.in ,.10 ,.minutes. ,.What ,.is ,.the ,.first ,.step ,.the ,.Operator ,.should ,.take ,.to ,.re
duce ,.the ,.line ,.loading?
A)Shed ,.load ,.at ,.the ,.downstream ,.bus.
B) ,.Open ,.the ,.line.
C) ,.Re-Dispatch ,.Generation.
D) ,.Initiate ,.the ,.restoration ,.of ,.the ,.parallel ,.line. ,.- ,.(correct ,.answer) ,.-
D) ,.Initiate ,.the ,.restoration ,.of ,.the ,.parallel ,.line.
As ,.a ,.Transmission ,.Operator, ,.you ,.realize ,.that ,.the ,.voltage ,.level ,.is ,.starting ,.to ,.decline ,.in ,.the ,.North ,.
West ,.part ,.of ,.the ,.system. ,.Which ,.of ,.the ,.following ,.devices ,.should ,.you, ,.as ,.a ,.Transmission ,.Operator,
,.be ,.able ,.to ,.operate, ,
.and/or ,.have ,.another ,.entity ,.operate ,.to ,.raise ,.the ,.voltage ,.level ,.back ,.to ,.normal ,.in ,.the ,.North ,.West ,
.part ,.of ,.the ,.system?
Answers
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. ,.Y
our ,.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. ,.- ,.(correct ,.answer) ,.-
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 ,.see
n ,.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
A) ,.4 ,.only
B) ,.1 ,.& ,.3
,C) ,.1 ,.& ,.4
D) ,.3 ,.& ,.4 ,.- ,.(correct ,.answer) ,.-C) ,.1 ,.& ,.4
Metered ,.Data ,.included ,.in ,.the ,.calculation ,.of ,.ACE ,.are: ,.dynamic ,.schedules, ,.pseudo ,.ties, ,.actual ,.freq
uency, ,.and ,.all ,.__________.
A) ,.Tie ,.lines ,.readings
B) ,.Generators ,.output
C) ,.Scheduled ,.frequency ,.indications
D) ,.Transformer ,.load ,.- ,.(correct ,.answer) ,.-A) ,.Tie ,.lines ,.readings
Balancing ,.Authority ,.A ,.is ,.currently ,.reading ,.a ,.system ,.frequency ,.of ,.60.00 ,.Hz. ,.Its ,.Net ,.Actual ,.Interch
ange ,.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 ,.- ,.(correct ,.answer) ,.-A) ,.-100
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 ,.hou
rs ,.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 ,.- ,.(correct ,.answer) ,.-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 ,.- ,.(correct ,.answer) ,.-D) ,.Tie ,.lines
If ,.the ,.frequency ,.bias ,.setting ,.is ,.set ,.to ,.a ,.less ,.negative ,.value ,.than ,.the ,.frequency ,.response ,.of ,.a ,.Bal
ancing ,.Authority ,.and ,.a ,.frequency ,.increase ,.is ,.caused ,.by ,.a ,.sudden ,.loss ,.of ,.load ,.in ,.an ,.external ,.bala
ncing ,.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
D)This ,.will ,.not ,.affect ,.the ,.ACE ,.- ,.(correct ,.answer) ,.-
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 ,.Authorit
y ,.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. ,.- ,.(correct ,.answer) ,.-
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 ,.- ,.(correct ,.answer) ,.-A) ,.Transmission ,.Operators ,.and ,.Balancing ,.Authorities
A ,.Transmission ,.line ,.is ,.loaded ,.25% ,.above ,.its ,.SOL. ,.A ,.parallel ,.line ,.is ,.out ,.for ,.routine ,.maintenance ,.a
nd ,.can ,.be ,.placed ,.in ,.service ,.in ,.10 ,.minutes. ,.What ,.is ,.the ,.first ,.step ,.the ,.Operator ,.should ,.take ,.to ,.re
duce ,.the ,.line ,.loading?
A)Shed ,.load ,.at ,.the ,.downstream ,.bus.
B) ,.Open ,.the ,.line.
C) ,.Re-Dispatch ,.Generation.
D) ,.Initiate ,.the ,.restoration ,.of ,.the ,.parallel ,.line. ,.- ,.(correct ,.answer) ,.-
D) ,.Initiate ,.the ,.restoration ,.of ,.the ,.parallel ,.line.
As ,.a ,.Transmission ,.Operator, ,.you ,.realize ,.that ,.the ,.voltage ,.level ,.is ,.starting ,.to ,.decline ,.in ,.the ,.North ,.
West ,.part ,.of ,.the ,.system. ,.Which ,.of ,.the ,.following ,.devices ,.should ,.you, ,.as ,.a ,.Transmission ,.Operator,
,.be ,.able ,.to ,.operate, ,
.and/or ,.have ,.another ,.entity ,.operate ,.to ,.raise ,.the ,.voltage ,.level ,.back ,.to ,.normal ,.in ,.the ,.North ,.West ,
.part ,.of ,.the ,.system?
