附录：外文资料翻译
外文资料原文：
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APSakisMeliopoulosa
dGeorgeJCokki
ides
AbstractProtectiverelayi
gisafu
dame
taldiscipli
eofpowersysteme
gi
eeri
gAtGeorgiaTechweofferthreecoursesthatcoverprotectiverelayi
ga
u
dergraduatecoursethatdevoteso
ethirdofthesemestero
relayi
gagraduatecoursee
titled“PowerSystemProtectio
”a
dathreea
datheco
ceptstheorya
dtech
ologyassociatedwithprotectiverelayi
gweavirtuale
viro
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tThevirtuale
viro
me
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cludesaapowersystemsimulatorbasimulatorofi
strume
tatio
forprotectiverelayi
gwithvisualizatio
a
da
imatio
modulescspecificprotectiverelaymodelswithvisualizatio
a
da
imatio
modulesa
ddi
terfacestobeperformedWerefertothissetofsoftwareasthe“virtualpowersystem”Thevirtualpowersystempermitsthei
depthcoverageoftheprotectiverelayi
gco
ceptsi
mi
imumtimea
dmaximizesstude
tu
dersta
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gThetoolis
otusedi
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ctio
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gforspecificdisturba
cesetcThepaperdescribesthevirtualpowersystemorga
izatio
a
d“e
gi
es”suchassolvervisualizatio
a
da
imatio
ofprotectiverelaysetcItalsodiscussestheutilizatio
ofthistooli
thecoursesviaspecificapplicatio
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tassig
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tsI
dexTermsAlgebraiccompa
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forma
imatio
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visualizatio
IINTRODUCTIONRELAYINGthesecuritya
dreliabilityofelectricpowersystemsAsthetech
ologyadva
cesrelayi
gofthesystemItisi
disputablethatrelayi
gthesafetyofsystemsa
dprotectio
ofequipme
tYetbecauseofthecomplexityofthesystema
dmultiplicityofcompeti
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eDespitealloftheadva
cesi
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i
te
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smisoperatio
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ticipatedsystemco
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ticipateallpossible
fco
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desirableoperatio
sPractici
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eersutilizeatwostepproceduretomi
imizethepossibilityofsucheve
tsFirsti
thedesig
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alysesareutilizedtodetermi
ethebestrelayi
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gsSeco
difsucha
eve
toccursa
exhaustivepostmortema
alysisisperformedtorevealtherootcauseoftheeve
ta
dwhat“wasmissed”i
thedesig
phaseThepostmortema
alysisoftheseeve
tsisfacilitatedwiththeexisti
gtech
ologyofdisturba
cerecordi
gsviafaultdisturba
cerecordersorembeddedi
umericalrelaysThisprocessresultsi
accumulatio
or