In e na ional Jou nal o Cu en Science Resea ch and Re iew
ISSN: 2581-8341
Volume 08 Issue 11 No embe 2025
DOI: 10.47191/ijcs /V8-i11-35, Impac Fac o : 8.048
IJCSRR @ 2025
www.ijcs .o g
5788 *Co esponding Au ho : Rizky Ap ylian o Susilo Volume 08 Issue 11 No embe 2025
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Analysis o OCR and GFR Coo dina ion on he 20 kV Cubicle a Mosad
O ice Towe Sama inda
Masing1, Syamsul Rizal Fadhil2, Onglan Nainggolan3, Rizky Ap ylian o Susilo4, Wahyu Se iawan5
1,2,3,4,5 Depa men o Elec ical Enginee ing, Sama inda S a e Poly echnic
ABSTRACT: The dis ibu ion sys em is a componen o he elec ic powe sys em esponsible o deli e ing elec ici y om he
ansmission ne wo k o consume s. This sys em gene ally u ilizes medium ol age le els, which a e mo e suscep ible o aul s
compa ed o ansmission sys ems. To mi iga e dis u bances in he dis ibu ion ne wo k, p o ec ion equipmen is employed.
Commonly used p o ec ion de ices include he O e cu en Relay (OCR) and he G ound Faul Relay (GFR). Coo dina ion be ween
he OCR and GFR is essen ial o ensu e he p o ec ion sys em unc ions op imally, possesses adequa e selec i i y and sensi i i y,
and main ains he con inui y o elec ici y supply. This pape discusses he coo dina ion se ings o he o e cu en and g ound aul
elays. Simula ions we e conduc ed using ETAP 19.0.1 so wa e based on ield da a. Calcula ion esul s on he eede indica e an
OCR g ading ime o 0.489 seconds, whe eas he ield da a shows 0.4 seconds. Fo he GFR, he g ading ime on he eede is 0.297
seconds, compa ed o 0.4 seconds om he ield da a. These alues indica e ha he p o ec ion coo dina ion wi hin his sys em can
be conside ed ideal.
KEYWORDS: G ound aul elay, O e cu en elay, P o ec ion coo dina ion, ETAP 19.0.1
I. INTRODUCTION
The elec ical ene gy dis ibu ion sys em is a c i ical componen o he powe sys em, esponsible o deli e ing elec ici y om
gene a ion sou ces o consume s. As he popula ion g ows and he numbe o elec ici y use s inc eases annually, he isk o aul s
occu ing wi hin he dis ibu ion sys em also ises [1].
Wi h he inc easing demand o elec ici y, powe sys ems ha e become inc easingly complex, equi ing e ec i e con ol o ensu e
e icien ene gy dis ibu ion. The dis ibu ion sys em plays a pi o al ole in ansmi ing elec ici y om subs a ions o consume s
ia Medium Vol age O e head Lines (SUTM) and Medium Vol age Unde g ound Cables (SKTM). Suppo ing equipmen , such as
medium ol age cubicles, is equi ed o unc ion as connec o s, b eake s, di ide s, and con olle s o he powe low. Consequen ly,
dis ibu ion ne wo ks mus be me iculously designed and suppo ed by adequa e in es men and high-quali y equipmen o ensu e
u u e eliabili y [2].
One common issue in elec ical dis ibu ion ne wo ks is sho -ci cui aul s, occu ing ei he be ween phases o be ween a phase and
he g ound. These aul s can be caused by insula ion ailu e, echnical e o s, pollu ion, o en i onmen al condi ions su ounding
he ne wo k. To add ess hese issues, a p o ec ion sys em comp ising Cu en T ans o me s (CT), Po en ial T ans o me s (PT),
ci cui b eake s, connec ing cables, and p o ec ion elays wo king in an in eg a ed manne is employed. Among hese componen s,
he p o ec ion elay plays a i al ole in de ec ing and esponding o sys em aul s [3].
The mos equen aul s in dis ibu ion sys ems a e sho ci cui s, including h ee-phase, phase- o-phase, and phase- o-g ound aul s.
To de ec hese, O e cu en Relays (OCR) and G ound Faul Relays (GFR) a e u ilized. The p ima y p o ec ion is designed o
ope a e i s a he loca ion nea es o he aul , while backup p o ec ion will ope a e should he p ima y p o ec ion ail [4].
P o ec ion sys em coo dina ion aims o de e mine he p ecise ope a ing ime se ings du ing a aul e en . This is achie ed by
adjus ing p o ec ion alues app op ia ely so ha each de ice unc ions e ec i ely. P ope coo dina ion is necessa y o isola e he
aul a ea and minimize he esul ing impac [1].
II. RESEARCH METHODOLOGY
A. Resea ch Loca ion and Du a ion
This esea ch was conduc ed a he Mosad O ice Towe Sama inda, loca ed a Jalan Cip o Mangun Kusumo, Sungai Keledang,
Sama inda Sebe ang Dis ic , Sama inda Ci y, Eas Kaliman an. The esea ch commenced in Janua y and con inued un il he s udy
was decla ed comple e.
In e na ional Jou nal o Cu en Science Resea ch and Re iew
ISSN: 2581-8341
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DOI: 10.47191/ijcs /V8-i11-35, Impac Fac o : 8.048
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B. Da a Types and Sou ces
This esea ch employs a quali a i e me hod u ilizing a di ec obse a ion app oach. The s udy commences wi h ield da a collec ion,
which is subsequen ly analyzed o add ess he p oblem o mula ion. The da a sou ces in his s udy consis o bo h p ima y and
seconda y da a. P ima y da a was ob ained h ough in e iews and discussions wi h ele an on-si e pe sonnel as well as academic
supe iso s. Meanwhile, seconda y da a was de i ed om documen s, epo s, li e a u e, scien i ic jou nals, books, websi es, and
manu ac u e in o ma ion suppo ing he hesis compila ion.
C. Resea ch Flowcha
The esea ch lowcha se es as a isual ep esen a ion illus a ing he sys ema ic s ages o he esea ch p ocess. This diag am
depic s he wo k low, o igina ing om p oblem iden i ica ion, objec i e de ini ion, and da a collec ion and analysis, o he
o mula ion o conclusions and he epo ing o esul s. The u iliza ion o a lowcha ensu es he esea ch p ocess emains s uc u ed
and easily comp ehensible.
1) Resea ch Concep Flowcha
The esea ch concep lowcha is a sys ema ic ep esen a ion o he esea che 's hough p ocess, linking key componen s wi hin
he s udy, anging om he scope and p oblem limi a ions o he inal objec i e. This en i e p ocess is s uc u ed in he o m o a
diag am o cla i y he di ec ion and s ages o he esea ch, as shown in Figu e 1 below.
Figu e 1. Resea ch Concep Flowcha
Modeling
and
Simula ion
S age
O e cu en
aul s mus no
a ec o he
ne wo ks.
G ound aul s mus
be p ope ly clea ed
a he aul poin ..
Coo dina ion
Pe o mance
La ge Signal
In e e ence
Powe Sys em
S abili y
O e Cu en
Relay (OCR)
G ound
Faul Relay
(GFR)
P o ec ion
agains
g ound aul s
P o ec ion
agains
o e cu en
aul s
De e mine
cu en se ings
and ideal
ope a ing imes
o OCR and
GFR
Implemen a
ion and
Pe o manc
e S age
P o ec ion
Requi emen s
OCR and
GFR
P o ec ion
Pe o man
ce
Analysis Tool
Elec ic
Powe
Sys em
Ne wo k
ETAP
So wa e
Ope a ion
Relay
Coo dina i
on
Gene a ion and
Load
In e connec ion
Powe dis ibu ion
om he subs a ion
o he 20 kV
dis ibu ion
ne wo k
In e na ional Jou nal o Cu en Science Resea ch and Re iew
ISSN: 2581-8341
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2) Ope a ional Resea ch Flowcha
The esea ch commences wi h a p elimina y s udy, which encompasses heo e ical da a collec ion h ough a li e a u e e iew and
an assessmen o ield condi ions ia a case s udy. This s age se es as he ounda ion o comp ehending he ope a ing p inciples
o elays and he p o ec ion coo dina ion concep s ha will be analyzed subsequen ly.
Figu e 2. Ope a ional Resea ch Flowcha
III. RESULT AND DISCUSSION
A. Ha apan Ba u Subs a ion Sou ce Impedance
The sho -ci cui capaci y on he p ima y side bus o he ans o me (150 kV) a Ka ang Joang Subs a ion was eco ded a 133,307.3
MVA. Based on his alue, calcula ions we e pe o med o de e mine he sou ce impedance (Xs) on he p ima y side, yielding a
alue o 0.17Omega. This alue ep esen s he o al sys em impedance opposing aul cu en s on he high- ol age side.
Subsequen ly, his impedance was e e ed o he ans o me 's seconda y side—speci ically he 20 kV bus— aking in o accoun
he ans o ma ion a io and equipmen cha ac e is ics, esul ing in an impedance alue o 0.003Omega. This signi ican ly lowe
impedance alue on he seconda y side indica es ha he p ospec i e aul cu en on he lowe ol age side will be much highe .
The e o e, his mus be add essed h ough p ecise p o ec ion sys em se ings o ensu e he eliabili y and sa e y o dis ibu ion
ne wo k ope a ions.
Da a Resea ch :
•Re e ence Da a
•Da a
START
P elimina y Resea ch:
•Li e a u e Re iew
• Li e a u e S udy
P og ams (So wa e)
Li e a u e
S udy Resul s
Mic oso O ice:
Mic oso O ice Visio:
E ap:
Da a P ocessing:
•Da a Ve i ica ion
•Da a Analysis
Coo dina ion
Func ion
Resea ch
Resul s
Sys em
Modeling
Sys em
Tes
Resul s
Is OCR and
GFR
Coo dina ion
Sys em
Resul s and
Discussion
Simula i
on
END
NO
YES
In e na ional Jou nal o Cu en Science Resea ch and Re iew
ISSN: 2581-8341
Volume 08 Issue 11 No embe 2025
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B. T ans o me Impedance
The ans o me ins alled a he Mosad O ice Towe has an impedance o 4.5%. Based on his da a, he posi i e and nega i e
sequence eac ance alues (X_{ 1} = X_{ 2}) o he ans o me a e 22.5 Omega. This ans o me is u ilized o supply he eede
and ea u es a YNyn0+d connec ion con igu a ion, which includes a del a winding. Due o he p esence o his del a winding, he
ze o-sequence eac ance alue (X_{ 0}) is 225Omega.
C. Dis ibu ion Ne wo k Impedance
Based on he da a ob ained, he eede u ilizes an AAAC (All Aluminum Alloy Conduc o ) ype wi h a c oss-sec ional a ea o 150
mm². The leng h o he HRB 6 eede is 4.8 km. Assuming ha aul s occu a speci ic poin s along he eede —speci ically a
dis ances o 0%, 20%, 40%, 60%, 80%, and 100% o he o al eede leng h— he impedance alues o he HRB 6 eede can be
calcula ed based on hese aul loca ions, as p esen ed in Table 1 and Table 2.
Table 1. Posi i e and Nega i e Sequence Feede Impedance
% Feede
Leng h
Z1= Z2
(/km)
To al Leng h
0
0 x 4,8 x (0,2162 + j
0,3305)
0
25
0,25 x 4,8 x (0,2162 + j
0,3305)
0,26 + j 0,396
50
0,50 x 4,8 x (0,2162 + j
0,3305)
0,518 + j 0,793
75
0,75 x 4,8 x (0,2162 + j
0,3305)
0,778 + j 1,189
100
1 x 4,8 x (0,2162 + j
0,3305)
1,037 + j 1,586
Table 2. Ze o-Sequence Feede Impedance
% Feede
Leng h
Z0
(/km)
To al Leng h
0
0 x 4,8 x (0,3631 + j
1,6180)
0
25
0,25 x 4,8 x (0,3631 + j
1,6180)
0,435 + j 1,941
50
0,50 x 4,8 x (0,3631 + j
1,6180)
0,871 + j
3,883
75
0,75 x 4,8 x (0,3631 + j
1,6180)
1,307 + j 5,854
100
1 x 4,8 x (0,3631 + j
1,6180)
1,742 + j
7,766
D. Equi alen Feede Impedance
The equi alen impedances u ilized in his analysis encompass he posi i e-sequence equi alen impedance (Z_{1eq}), nega i e-
sequence equi alen impedance (Z_{2eq}), and ze o-sequence equi alen impedance (Z_{0eq}). Calcula ions o each ype o
equi alen impedance we e conduc ed a dis ances o 0%, 20%, 40%, 60%, 80%, and 100% o he eede leng h. The esul s o hese
calcula ions a e p esen ed in Table 3 and Table 4 below.
In e na ional Jou nal o Cu en Science Resea ch and Re iew
ISSN: 2581-8341
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Table 3. HRB6 Feede Equi alen Impedance (Z_1 & Z_2)
Table 4. HRB 6 Feede Ze o-Sequence Equi alen Impedance
Ne wo k
Leng h (%)
Leng h
(km)
Z0 ek
To al
0%
0
j225 + ( 3 x 0 ) + 0
0 + j 255
25%
1,2
j225 + ( 3 x 0 ) +
(0,435 + j 1,941)
0,435 +
j
226,941
50%
2,4
j225 + ( 3 x 0 ) +
(0,871 + j 3,883)
0,871 +
j
228,883
75%
3,6
j225 + ( 3 x 0 ) +
(1,307 + j 5,854)
1,307 +
j
230,854
100%
4,8
j225 + ( 3 x 0 ) +
(1,742 + j 7,766)
1,742 +
j
232,766
E. Sho -Ci cui Cu en Calcula ion
Sho -ci cui aul cu en s in elec ical dis ibu ion sys ems can be calcula ed by applying Ohm's law; howe e , he equi alen
impedance alues u ilized in hese calcula ions a y depending on he speci ic ype o aul encoun e ed. ypically, he aul ypes
analyzed include h ee-phase sho -ci cui aul s, which gene ally yield he highes aul cu en s, and single-phase- o-g ound aul s,
which a e equen ly encoun e ed in dis ibu ion sys ems.
Fo he HRB 6 eede , sho -ci cui cu en calcula ions based on hese wo aul ypes we e conduc ed by accoun ing o he
impedance o each sys em componen . A summa y o hese calcula ion esul s is p esen ed in Table 5 o se e as a e e ence o
de e mining p ecise and eliable p o ec ion se ings.
Table 5. Calcula ion Resul s o Sho -Ci cui Faul Cu en s o HRB 6 Feede
Sho -Ci cui
Faul Type
Calcula ion Resul s
ETAP Simula ion
Resul s
1 Phase
0,143713 kA
0,142 kA
3 Phase
0,51320 kA
0,513 kA
Ne wo k
Leng h
(%)
Leng h
(km)
Z1 ek = Z2 ek
To al
0%
0
j0,003 + 22,5 + 0
22,5 + j
0,003
25%
1,2
j0,003 + 22,5 +
(0,26 + j 0,396)
22,76 +
j 0,399
50%
2,4
j0,003 + 22,5 +
(0,518 + j 0,793)
23,018 +
j 0,796
75%
3,6
j0,003 + 22,5 +
(0,778 + j 1,189)
23,278 +
j 1,192
100%
4,8
j0,003 + 22,5 +
(1,037 + j 1,586)
23,537 +
j 1,589
In e na ional Jou nal o Cu en Science Resea ch and Re iew
ISSN: 2581-8341
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F. OCR and GFR Se ing Calcula ions
On he HRB 6 eede a Ha apan Ba u Subs a ion, a cu en ans o me (CT) wi h a a io o 300:5 A is ins alled, se ing as he
e e ence o calcula ing he pick-up le el and Time Mul iple Se ing (TMS). Based on he calcula ion esul s p esen ed in Table 10
and Table 11, he HRB 6 eede —cha ac e ized by a o al load o 800 kW and a line leng h o 4.8 km— equi es an OCR cu en
se ing o 22 A wi h a TMS o 0.040 seconds on he eede side. Con e sely, he incoming side is con igu ed wi h a cu en se ing
o 5.5 A and a TMS o 0.044 seconds. Rega ding he GFR se ings o he HRB 6 eede , he incoming side is adjus ed o a cu en
o 0.21 A wi h a TMS o 0.2 seconds. Meanwhile, he eede side u ilizes he same cu en se ing o 0.21 A bu wi h a lowe TMS
o 0.1 seconds. This con igu a ion is in ended o ensu e e ec i e and selec i e p o ec ion coo dina ion agains po en ial aul s wi hin
he dis ibu ion ne wo k.
Table 6. OCR And GFR Se ing Resul s o HRB 6 Feede
Relay Type
Relay
Loca ion
Ise
(A)
TMS
Time
(seconds)
G ading
Time
O e cu en
Relay (OCR)
Incoming
5,5
0,044
0,631
0,489
Feede
22
0,040
0,142
G ound Faul
Relay (GFR)
Incoming
0,21
0,2
0,594
0,297
Feede
0,21
0,1
0,297
G. OCR and GFR Coo dina ion
Based on he simula ion esul s p esen ed in he igu e abo e, i is obse ed ha he GFR—being he elay closes o he aul
loca ion—ope a es i s when a aul occu s. Consequen ly, he Ci cui B eake (CB) associa ed wi h he GFR will clea he aul
cu en . Meanwhile, he OCR se es as backup p o ec ion and will ope a e should he GFR ail o unc ion. The ope a ing imes o
bo h elays a e displayed in he coo dina ion cu es in Figu e 3 and Figu e 4 as ollows.
Figu e 3. Relay ime selec i i y cu e esul s on he eede side wi h g id lines
Relay GFR - 51
OC1
0,142 kA @ 20 kV
Relay GFR - 50
OC1
0,142 kA @ 20 kV
1: 0,297 s
Relay OCR - 51
OC1
0,142 kA @ 20 kV
1: 0,322 s
Relay OCR - 50
OC1
0,142 kA @ 20 kV
No malized (shi ed) TCC
3-Phase (Sym) aul : 0,142kA @ 20kV
Adj Bus: Bus Beban
Connec o : CT7 - CB GFR
SQOP File: Un i led
Da a Re : Base
Con igu a ion: No mal
Da e: 07-20-2025
100,005 ,01 ,1 110,03 ,05 ,3 ,5 3 5 30 50
Pe Uni
100,005 ,01 ,1 110,03 ,05 ,3 ,5 3 5 30 50
Pe Uni
480,8,024 ,1 110 100,05 ,3 ,5 3 5 30 50 300
Pe Uni
1K
,01
,1
1
10
100
,03
,05
,3
,5
3
5
30
50
300
500
Seconds
1K
,01
,1
1
10
100
,03
,05
,3
,5
3
5
30
50
300
500
Seconds
ETA P S a 19.0.1C
S a 32
P ojec :
Loca ion:
Con ac :
E nginee :
Filename: D: ETAP1901 REV REV.OTI
Da e: 07-20-2025
SN:
Re : Base
Faul : Phase(No malized)
±
I >
I >
±
Bus Beb an
CB G FR
CB OC R
Relay G FR
Relay OCR
Relay GFR - 51
OC1
0,142 kA @ 20 kV
Relay GFR - 50
OC1
0,142 kA @ 20 kV
1: 0,297 s
Relay OCR - 51
OC1
0,142 kA @ 20 kV
1: 0,322 s
Relay OCR - 50
OC1
0,142 kA @ 20 kV
No malized (shi ed) TCC
3-Phase (Sym) aul : 0,142kA @ 20kV
Adj Bus: Bus Beban
Connec o : CT7 - CB GFR
SQOP File: Un i led
Da a Re : Base
Con igu a ion: No mal
Da e: 07-20-2025
100,005 ,01 ,1 110,03 ,05 ,3 ,5 3 5 30 50
Pe Uni
100,005 ,01 ,1 110,03 ,05 ,3 ,5 3 5 30 50
Pe Uni
480,8,024 ,1 110 100,05 ,3 ,5 3 5 30 50 300
Pe Uni
1K
,01
,1
1
10
100
,03
,05
,3
,5
3
5
30
50
300
500
Seconds
1K
,01
,1
1
10
100
,03
,05
,3
,5
3
5
30
50
300
500
Seconds
ETA P S a 19.0.1C
S a 32
P ojec :
Loca ion:
Con ac :
E nginee :
Filename: D: ETAP1901 REV REV.OTI
Da e: 07-20-2025
SN:
Re : Base
Faul : Phase(No malized)
±
I >
I >
±
Bus Beb an
CB G FR
CB OC R
Relay G FR
Relay OCR
In e na ional Jou nal o Cu en Science Resea ch and Re iew
ISSN: 2581-8341
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Figu e 4. Relay ime selec i i y cu e esul s on he eede side
In he coo dina ion cu e ob ained om he simula ion on he eede side, i is obse ed ha he GFR—ac ing as he elay closes
o he aul poin —ope a es i s wi h an ope a ing ime o 0.297 seconds. Meanwhile, he OCR unc ions as backup p o ec ion and
will ope a e a 0.631 seconds should he GFR ail o ope a e.
IV. CONCLUSION
Manual calcula ions yielded a h ee-phase sho -ci cui cu en o 0.51320 kA, whe eas he ETAP 19.0.1 simula ion indica ed 0.513
kA. Fo he single-phase- o-g ound aul , alues o 0.143713 kA and 0.142 kA we e ob ained om manual calcula ions and he
simula ion, espec i ely. This sligh disc epancy is a ibu ed o a ia ions in sys em assump ions and pa ame e s; howe e , bo h
emain consis en in ep esen ing he aul cu en magni ude. Calcula ion esul s indica e an OCR ope a ing ime o 0.631 seconds
and a GFR ope a ing ime o 0.594 seconds. The OCR p io i izes he esponse o phase aul s, while he GFR add esses g ound
aul s. This dis inc ion ensu es selec i e and eliable p o ec ion coo dina ion. Fu he mo e, ega ding he elay ope a ing ime
se ings on he eede side, he OCR ope a ing ime was de e mined o be 0.142 seconds, and he GFR ope a ing ime was 0.297
seconds. This demons a es ha he eede elay is designed o espond apidly o aul s, whe he phase o g ound- ela ed.
REFERENCES
1. R. Adzin, "Coo dina ion Analysis o O e cu en Relay (OCR) and G ound Faul Relay (GFR) in 20 kV Medium Vol age
Powe Dis ibu ion Sys ems (Case S udy a PT. PLN (Pe se o) ULP Sida eja)," Uni e si as Pe adaban Lib a y, 2022.
Accessed: No . 01, 2024.
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Relay (GFR) on he 20 kV Dis ibu ion Sys em: A Case S udy a PT. PLN (Pe se o) ULP Sida eja,
Relay GFR - 51
OC1
0,142 kA @ 20 kV
Relay GFR - 50
OC1
0,142 kA @ 20 kV
1: 0,297 s
Relay OCR - 51
OC1
0,142 kA @ 20 kV
1: 0,322 s
Relay OCR - 50
OC1
0,142 kA @ 20 kV
No malized (shi ed) TCC
3-Phase (Sym) aul : 0,142kA @ 20kV
Adj Bus: Bus Beban
Connec o : CT7 - CB GFR
SQOP File: Un i led
Da a Re : Base
Con igu a ion: No mal
Da e: 07-20-2025
100,005 ,01 ,1 110,03 ,05 ,3 ,5 3 5 30 50
Pe Uni
100,005 ,01 ,1 110,03 ,05 ,3 ,5 3 5 30 50
Pe Uni
480,8,024 ,1 110 100,05 ,3 ,5 3 5 30 50 300
Pe Uni
1K
,01
,1
1
10
100
,03
,05
,3
,5
3
5
30
50
300
500
Seconds
1K
,01
,1
1
10
100
,03
,05
,3
,5
3
5
30
50
300
500
Seconds
ETAP S a 19.0.1C
S a 32
P ojec :
Loca ion:
Con ac :
E nginee :
Filename: D: ETAP1901 REV REV.OTI
Da e: 07-20-2025
SN:
Re : Base
Faul : Phase(No malized)
±
I >
I >
±
Bus Beb an
CB G FR
CB OC R
Rela y GFR
Relay OCR
Relay GFR - 51
OC1
0,142 kA @ 20 kV
Relay GFR - 50
OC1
0,142 kA @ 20 kV
1: 0,297 s
Relay OCR - 51
OC1
0,142 kA @ 20 kV
1: 0,322 s
Relay OCR - 50
OC1
0,142 kA @ 20 kV
No malized (shi ed) TCC
3-Phase (Sym) aul : 0,142kA @ 20kV
Adj Bus: Bus Beban
Connec o : CT7 - CB GFR
SQOP File: Un i led
Da a Re : Base
Con igu a ion: No mal
Da e: 07-20-2025
100,005 ,01 ,1 110,03 ,05 ,3 ,5 3 5 30 50
Pe Uni
100,005 ,01 ,1 110,03 ,05 ,3 ,5 3 5 30 50
Pe Uni
480,8,024 ,1 110 100,05 ,3 ,5 3 5 30 50 300
Pe Uni
1K
,01
,1
1
10
100
,03
,05
,3
,5
3
5
30
50
300
500
Seconds
1K
,01
,1
1
10
100
,03
,05
,3
,5
3
5
30
50
300
500
Seconds
ETAP S a 19.0.1C
S a 32
P ojec :
Loca ion:
Con ac :
E nginee :
Filename: D: ETAP1901 REV REV.OTI
Da e: 07-20-2025
SN:
Re : Base
Faul : Phase(No malized)
±
I >
I >
±
Bus Beb an
CB G FR
CB OC R
Rela y GFR
Relay OCR
In e na ional Jou nal o Cu en Science Resea ch and Re iew
ISSN: 2581-8341
Volume 08 Issue 11 No embe 2025
DOI: 10.47191/ijcs /V8-i11-35, Impac Fac o : 8.048
IJCSRR @ 2025
www.ijcs .o g
5795 *Co esponding Au ho : Rizky Ap ylian o Susilo Volume 08 Issue 11 No embe 2025
A ailable a : www.ijcs .o g
Page No. 5788-5795
5. J. M. Sibu ian, T. Siahaan, and J. Sinaga, "Analysis o 20 kV Dis ibu ion Ne wo k Pe o mance Imp o emen Using
The mo ision Me hod on he Ne wo k o PT. PLN (Pe se o) ULP Medan Ba u," Uda Ene gy Technology Jou nal: Jou nal
o Elec ical Enginee ing, ol. 9, no. 1, pp. 8–19, 2020. Accessed: No . 18, 2024. [Online].
6. H. D. Pamin o and A. Kiswan ono, "Simula ion Design o O e cu en Relay Sys em on 20 kV Dis ibu ion Ne wo ks,"
Aisyah Jou nal o In o ma ics and Elec ical Enginee ing (A J I E E), ol. 3, no. 1, pp. 45–49, Feb. 2021.
7. M. Y. Imanuddin and F. Achmad, "Design o Powe Dis ibu ion P o ec ion Sys em o he Kyo Apa men P ojec a PT.
Alkonusa Teknik In e kon," Jou nal o Educa ion and Counseling (JPDK), ol. 5, no. 1, pp. 1633–1639, 2023.
8. W. Sa imun N., Technical Se ices Pocke Book, 2nd ed. Depok, Indonesia: Ga amond, 2011.
Ci e his A icle: Masing, Fadhil, S.R., Nainggolan, O., Susilo, R.A., Se iawan, W. (2025). Analysis o OCR and GFR
Coo dina ion on he 20 kV Cubicle a Mosad O ice Towe Sama inda. In e na ional Jou nal o Cu en Science Resea ch and
Re iew, 8(11), pp. 5788-5795. DOI: h ps://doi.o g/10.47191/ijcs /V8-i11-35
