Protection Coordination Report Owner
JANKI CORPN LTD
Project:
JANKI CORPN LTD., STEEL DIVISION ,SIDIGINAMOLA VILLAGE,BELLARY VILLAGE,BELLARYI
Compiled by
Interface Electronics Pvt Ltd,Chennai Email:
[email protected] website:www.ifepwrana.com
on en s Sl.No Descriptiion
Page No
1
Executive Su Summary
3
2
Reference Do Documents
4
3
Single Line Diagram
5
4
Short circu rcuit Report Gri Grid
7
5
Device Details
11
6
Tran Transf sfor orme merr Rela Relay y Set Setti ting ng Calc Calcul ulat atio ions ns
12
7
Sett Settin ing g Det Detai ails ls for for Rela Relay y and and Cont Contro roll Pane Panell
24
8
Sett Settin ing g Det Detai ails ls for for 11 11 kV kV HT HT Swi Switc tch h Boa Board rd
32
9
Sett Settin ing g Deta Detail ils s for for 6.6 6.6
57
10
Sett Settin ing g Deta Detail ils s for for LT LT PCC PCC// MCC MCC
89
11
Time Time Cur Curre rent nt Cha Chara ract cter eris isti tic c Curv Curves es
102
12
Obs Observ ervatio ation n and and Co Commen mments ts
109
kV HT Swit Switch ch Boar Board d
on en s Sl.No Descriptiion
Page No
1
Executive Su Summary
3
2
Reference Do Documents
4
3
Single Line Diagram
5
4
Short circu rcuit Report Gri Grid
7
5
Device Details
11
6
Tran Transf sfor orme merr Rela Relay y Set Setti ting ng Calc Calcul ulat atio ions ns
12
7
Sett Settin ing g Det Detai ails ls for for Rela Relay y and and Cont Contro roll Pane Panell
24
8
Sett Settin ing g Det Detai ails ls for for 11 11 kV kV HT HT Swi Switc tch h Boa Board rd
32
9
Sett Settin ing g Deta Detail ils s for for 6.6 6.6
57
10
Sett Settin ing g Deta Detail ils s for for LT LT PCC PCC// MCC MCC
89
11
Time Time Cur Curre rent nt Cha Chara ract cter eris isti tic c Curv Curves es
102
12
Obs Observ ervatio ation n and and Co Commen mments ts
109
kV HT Swit Switch ch Boar Board d
xecu xecu ve
ummar mmary y
Introduction Project: Owner: ElectricalDistribution System
1x 15 MW Captive Power Plant at Janki Corpn Ltd,Bellary JCL
Janki Corpn Ltd Steel Divn,Madpiya Chordia,Chittor Road,Bhilwara-
311001,Rajasthan 11 kV Power Generation ion,6.6 kV Station ion Service ice and 6.6 kV for Unit Auxiliar iary system 110 kV for Transmission Transmission and Distribution and distribution at 0.415 kV
Power System Data Max Source Fault level 5000 MVA sec at 110 kV (assumed) Min Source Fault level (assumed) 10000 MVA sec at 400 kV Tools used:
Paladin Design Base 5- an Electrical Design software
Protection Coordination The The shor shortt circ circui uitt curr curren ents ts at vari variou ouss busb busbar arss are are calc calcul ulat ated ed base based d on the the abov above e assumptions. Calculated Short Short circuit currents are shown in the SLD. Sele Select ctiv ivit ity y of rela elays and circu ircuit it brea break kers ers were ere worke orked d out out based sed on the cable able size and flow of short circuit currents. currents. Time current characterstic curves are generated for every path and verified .
Conclusion e
ngs
or eac
ev ce ce,s or
c rc rcu
curren s a
every
us ars, e a e
calc calcul ulat atio ions ns for for the the sett settin ings gs are are give given n in the the foll follow owin ing g page pages. s. Whil While e doin doing g this this exercise certain discrepencies were noticed and these are brought out seperately under heading 'Comments and Observations'.
Reference Documents/D Documents/Drawings rawings Sl.No
File name
Title of the Document
Document/drawing No
1
JCLSLD.DWG
OVERALL SINGLE LINE DIAGRAM FOR 15 MW,3.5MW &
JCL-CPP-ELE-0001
2 3 4 5
RELAYS IN JCL.DOCX 2600KW HT motor test report.pdf 211218 ID fan 1000KW.jpg 803448 AHF -1 315KW.jpg
Single Line diagram for 110 kV Switch Yard Extension TEST CERTIFICATE ON 2600kW MOTOR TEST CERTIFICATE ON 1000kW MOTOR TEST CERTIFICATE ON 315kW MOTOR
6 7 8 9
2000KVA transformer.pdf 20 MVA TR 1.jpg 1250 kVA TR 1.jpg 1600 kVA TR 1.jpg
TECHNICAL PARTICULARS ON TRANSFORMERS TECHNICAL PARTICULARS ON TRANSFORMERS 20 MVA TECHNICAL PARTICULARS ON TRANSFORMERS 1250kVA TECHNICAL PARTICULARS ON TRANSFORMERS 1600kVA
10 11 12 13
1000 kVA TR 1.jpg 3.5 TG 1.jpg 16 TG 1.jpg 15 MVA TR 1.jpg
TECHNICAL PARTICULARS ON TRANSFORMERS 1000kVA TECHNICAL PARTICULARS ON TRANSFORMERS 3.5 MW TECHNICAL PARTICULARS ON TRANSFORMERS 16 MW TG TECHNICAL PARTICULARS ON TRANSFORMERS 15 MVA
14
750 kVA TR 1.jpg
TECHNICAL PARTICULARS ON TRANSFORMERS 750 kVA
IN
LE LINE DIA
RAM
SHORT CIRCUIT CURRENTS-GRID 2500 MVASEC
SHORT CIRCUIT CURRENTS-GRID 5000 MVASEC
Details of Devices Transformers To
From
Primary Secondar Rating Volt y Volt in kVA
11 kV Switch Board GRID 110000 FDR 07 LBSS-1 6.6 kV LBSS-1 SWBD FDR 4 11 kV SWBD 11000 Screening MCC LHS AH11 HV distribution 6600 Screening MCC RHS AH10 HV distribution 6600 TG MCC RHS AH16 HV distribution 6600 TG MCC LHS AH17 HV distribution 6600 BALLING SYSTEM LHS AH15 HV distribution 6600 BALLING SYSTEM RHS AH14 HV distribution 6600 PROPORTION & MIXING MCC LHS AH13 HV distribution 6600 PROPORTION & MIXING MCC RHS AH12 HV distribution 6600 ORE CRUSHING GRINDING SYSTEM LHS LCSS-2 FDR 02 6.6 kV LBBSS-1 SWBD 6600 ORE CRUSHING GRINDING SYSTEM RHS LCSS-1 FDR 15 6.6 kV LBBSS-1 SWBD 6600 CPP LCSS-1 FDR 5 11 kV SWBD 11000 CPP LCSS-1 FDR12 11 kV SWBD 11000 KILN 1&2 FDR 3 11 kV SWBD 11000 AFBC FEEDER LHS FDR 6 11 kV SWBD 11000 AFBC FEEDER RHS FDR 16 11 kV SWBD 11000 RMP3 FDR 13 11 kV SWBD 11000 KILN 3,4&5 FDR 14 11 kV SWBD 11000 STP FEEDER FDR 15 11 kV SWBD 11000
11000 6900 433 433 433 433 433 433 433 433 433 433 433 433 433 433 433 433 433 433
20000 15000 1000 1000 1600 1600 1600 1600 1000 1000 1250 1250 2000 2000 1250 750 750 1000 2500 750
HV STAR DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA
LV DELTA STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR
HV LV RATED RATED CURRENT CURRENT 10 ONAN/ONAF 104.98 1049.76 8.35 ONAN/ONAF 787.32 1255.15 5 ONAN 87.48 1333.38 5 ONAN 87.48 1333.38 5 ONAN 139.96 2133 5 ONAN 139.96 2133 5 ONAN 139.96 2133 5 ONAN 139.96 2133 5 ONAN 87.48 1333.38 5 ONAN 87.48 1333.38 5 ONAN 109.35 1666.76 5 ONAN 109.35 1666.76 6.25 ONAN 104.98 2666.82 6.25 ONAN 104.98 2666.82 5 ONAN 65.61 1666.76 5 ONAN 39.37 1000.06 5 ONAN 39.37 1000.06 5.16 . ONAN 52.49 . 1333.38 . 6.5 ONAN 131.22 3333.53 5 ONAN 39.37 1000.06
Vector Z in % Group YNd1 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11
Type of Cooling
Details of Devices Transformers To
From
Primary Secondar Rating Volt y Volt in kVA
11 kV Switch Board GRID 110000 FDR 07 LBSS-1 6.6 kV LBSS-1 SWBD FDR 4 11 kV SWBD 11000 Screening MCC LHS AH11 HV distribution 6600 Screening MCC RHS AH10 HV distribution 6600 TG MCC RHS AH16 HV distribution 6600 TG MCC LHS AH17 HV distribution 6600 BALLING SYSTEM LHS AH15 HV distribution 6600 BALLING SYSTEM RHS AH14 HV distribution 6600 PROPORTION & MIXING MCC LHS AH13 HV distribution 6600 PROPORTION & MIXING MCC RHS AH12 HV distribution 6600 ORE CRUSHING GRINDING SYSTEM LHS LCSS-2 FDR 02 6.6 kV LBBSS-1 SWBD 6600 ORE CRUSHING GRINDING SYSTEM RHS LCSS-1 FDR 15 6.6 kV LBBSS-1 SWBD 6600 CPP LCSS-1 FDR 5 11 kV SWBD 11000 CPP LCSS-1 FDR12 11 kV SWBD 11000 KILN 1&2 FDR 3 11 kV SWBD 11000 AFBC FEEDER LHS FDR 6 11 kV SWBD 11000 AFBC FEEDER RHS FDR 16 11 kV SWBD 11000 RMP3 FDR 13 11 kV SWBD 11000 KILN 3,4&5 FDR 14 11 kV SWBD 11000 STP FEEDER FDR 15 11 kV SWBD 11000
11000 6900 433 433 433 433 433 433 433 433 433 433 433 433 433 433 433 433 433 433
20000 15000 1000 1000 1600 1600 1600 1600 1000 1000 1250 1250 2000 2000 1250 750 750 1000 2500 750
HV STAR DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA DELTA
LV DELTA STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR STAR
HV LV RATED RATED CURRENT CURRENT 10 ONAN/ONAF 104.98 1049.76 8.35 ONAN/ONAF 787.32 1255.15 5 ONAN 87.48 1333.38 5 ONAN 87.48 1333.38 5 ONAN 139.96 2133 5 ONAN 139.96 2133 5 ONAN 139.96 2133 5 ONAN 139.96 2133 5 ONAN 87.48 1333.38 5 ONAN 87.48 1333.38 5 ONAN 109.35 1666.76 5 ONAN 109.35 1666.76 6.25 ONAN 104.98 2666.82 6.25 ONAN 104.98 2666.82 5 ONAN 65.61 1666.76 5 ONAN 39.37 1000.06 5 ONAN 39.37 1000.06 5.16 . ONAN 52.49 . 1333.38 . 6.5 ONAN 131.22 3333.53 5 ONAN 39.37 1000.06
Vector Z in % Group YNd1 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11 Dyn11
Type of Cooling
SETTING CALCULATIONS FOR TRANSFORMERS
Setting Calculation for Distribution Transformers 2 MVA
433 V
11 3200
125/1 2000 kVA Transformer capacity
PT
2000
kVA
Primary Voltage
Vp
11
kV
Secondary Voltage
Vs
0.433
kV
Transformer HV side CT details CTHV Turns Ratio
125/1 CTRP 125
Transformer LV side ACB CT details Percentage Impedance of Transformer
3200 Z
6.25%
Through Fault current at 0.415 kV Bus
33337
Amps
Transformer HV side current as per name plate
104.98
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x 104.98/0.95 121.55
Transformer HV side CT Secondary Pick up Current
Isfl
0.97
IDMT setting at 11 kV side
1
Setting proposed on HV side Ip
1
Curve
Extreme Inverse
Transformer LV side current as per name plate
2666.82
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio =1.1 x 2666.82/0.95 3087.90
Transformer LV side CT Secondary Pick up Current
=3087.90/3200
Relay setting for over current
1
Setting proposed on LV side Ip
1
Through Fault current at 0.415kV Bus
Amps
HV side current due to fault at 0.415 kV bus
33337.00 1312.27
HV side CT Secondary current due to fault at 0.415kV bus
10.50
Amps
Setting proposed on HV side relay I>>
13.00 6
Amps
Setting proposed on LV side relay I>>
Amps
Setting Calculation for Distribution Transformers 1 MVA
433 V
11
1600 A
75/ 1000 kVA Transformer capacity
PT
1000
kVA
Primary Voltage
Vp
11
kV
Secondary Voltage
Vs
0.433
kV
Transformer HV side CT details CTHV Turns Ratio
75/1 CTRP 75
Transformer LV side ACB Rating Percentage Impedance of Transformer
1600 Z
5.16%
Through Fault current at 0.415 kV Bus
23208.00
Amps
Transformer HV side current as per name plate
52.49
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x 52.49/0.95 60.78
Transformer HV side CT Secondary Pick up Current
Isfl
0.81
IDMT setting at 11 kV side
0.8
Setting proposed on HV side Ip
0.8
Curve
Extremel Inverse
Transformer LV side current as per name plate
1333.41
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio =1.1 x1333.41/0.95 1543.95
Transformer LV side CT Secondary Pick up Current
=1543.95/1600
ACB setting for over current
0.96496875
Setting proposal on ACB
1
Through Fault current at 0.415kV Bus
Amps
HV side current due to fault at 0.415 kV bus
23208.00 913.55
HV side CT Secondary current due to fault at 0.415kV bus
12.18
Amps
Setting proposed on HV side relay I>>
14.00 6.00
Amps
Setting proposed on LV sideACB I>>
Amps
Setting Calculation for Distribution Transformers 2.5 MVA
11
433 V 4000 A
800/1 2500 kVA Transformer capacity
PT
2500
kVA
Primary Voltage
Vp
11
kV
Secondary Voltage
Vs
0.433
kV
Transformer HV side CT details CTHV Turns Ratio
150/1 CTRP 150
Transformer LV side ACB Rating Percentage Impedance of Transformer
4000 Z
6.50%
Through Fault current at 0.415 kV Bus as per report
36209
Amps
Transformer HV side current as per name plate
131.22
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x 131.22/0.95 151.94
Transformer HV side CT Secondary Pick up Current
Isfl
1.01
IDMT setting at 11 kV side
1
Setting proposed on HV side Ip
1
Curve
Extreme Inverse
Transformer LV side current as per name plate
3333.53
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio =1.1 x 3333.53/0.95 3859.88
Transformer LV side CT Secondary Pick up Current
=3859.88/4000
ACB setting for over current
1
Setting proposed on LV side Ip
1
Through Fault current at 0.415kV Bus
Amps
HV side current due to fault at 0.415 kV bus
36209.00 1425.32
HV side CT Secondary current due to fault at 0.415kV bus
9.50
Amps
Setting proposed on HV side relay I>>
12.00 6
Amps
Setting proposed on LV side relay I>>
Amps
Setting Calculation for Distribution Transformers 1.25 MVA
433 V
11
2000 A
75/ 1250 kVA Transformer capacity
PT
1250
kVA
Primary Voltage
Vp
11
kV
Secondary Voltage
Vs
0.433
kV
Transformer HV side CT details CTHV Turns Ratio
100/1 CTRP 100
Transformer LV side ACB Rating Percentage Impedance of Transformer
2000 Z
5.00%
Fault current at 0.415 kV Bus as per report
25029.00
Amps
Transformer HV side current as per name plate
65.61
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x65.61/0.95 75.97
Transformer HV side CT Secondary Pick up Current
Isfl
0.76
IDMT setting at 11 kV side
0.75
Setting proposed on HV side Ip
0.75
Curve
Extreme l Inverse
Transformer LV side current as per name plate
1666.76
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio =1.1 x1666.76/0.95 1929.93
Transformer LV side CT Secondary Pick up Current
=1929.93/2000
ACB setting for over current
0.964615
Setting proposed on LV side Ip
1
Through Fault current at 0.415kV Bus
Amps
HV side current due to fault at 0.415 kV bus
25029.00 985.23
HV side CT Secondary current due to fault at 0.415kV bus
9.85
Amps
Setting proposed on HV side relay I>>
12.00 6
Amps
Setting proposed on LV side relay I>>
Amps
Setting Calculation for Transformers 0.75 MVA
433 V
11
1250 A
100/1 750 kVA Transformer capacity
PT
750
kVA
Primary Voltage
Vp
11
kV
Secondary Voltage
Vs
0.433
kV
Transformer HV side CT details CTHV Turns Ratio
100/1 CTRP 100
Transformer LV side ACB Rating Percentage Impedance of Transformer
1250 Z
5.00%
Through Fault current at 0.433 kV Bus
18303.00
Amps
Transformer HV side current as per name plate
39.37
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x39.37/0.95 45.59
Transformer HV side CT Secondary Pick up Current
Isfl
0.46
IDMT setting at 11 kV side
0.5
Setting proposed on HV side Ip
0.5
Curve
Extreme Inverse
Transformer LV side current as per name plate
1000.06
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio =1.1 x1000.06/0.95 1157.96
Transformer LV side CT Secondary Pick up Current
=1157/1250
ACB setting for over current
0.925616
Setting proposed onLV side Ip
0.95
Through Fault current at 0.415 kV Bus
Amps
HV side current due to fault at 0.415 kV bus
18303.00 720.47
HV side CT Secondary current due to fault at 0.415 kV bus
7.20
Amps
Setting proposed on HV side relay I>>
9.00 6
Amps
Setting proposed on LV side relay I>>
Amps
Setting Calculation for Transformers 1 MVA Feeding Screening MCC
433 V
6.6kV 150/5
1600 A 1000 kVA
Transformer capacity
PT
1000
kVA
Primary Voltage
Vp
6.6
kV
Secondary Voltage
Vs
0.433
kV
Transformer HV side CT details CTHV Turns Ratio
150/5 CTRP 30
Transformer LV side ACB Rating Percentage Impedance of Transformer
1600 Z
5.00%
Through Fault current at 0.415 kV Bus
23208
Amps
Transformer HV side current as per name plate
87.48
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x 87.48/0.95 101.29
Transformer HV side CT Secondary Pick up Current
Isfl
3.38
IDMT setting at 6.6 kV side
0.675283281
Setting proposed on HV side Ip
0.7
Curve
Extremel Inverse
Transformer LV side current as per name plate
1333.41
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio
Amps
=1.1 x1333.41/0.95 1543.95 Transformer LV side CT Secondary Pick up Current
=1543.95/1600
ACB setting for over current
0.96496875
Setting proposal on ACB
1
Through Fault current at 0.415kV Bus
Amps
HV side current due to fault at 0.415 kV bus
23208.00 1522.59
HV side CT Secondary current due to fault at 0.415kV bus
50.75
Amps
Setting proposed on HV side relay I>>
60 (12) 6.00
Amps
Setting proposed on LV sideACB I>>
Amps
Setting Calculation for Transformers 1 MVA Feeding Proportion Mixing MCC
433 V
6.6kV
1600 A
300/5 1000 kVA Transformer capacity
PT
1000
kVA
Primary Voltage
Vp
6.6
kV
Secondary Voltage
Vs
0.433
kV
Transformer HV side CT details CTHV Turns Ratio
300/5 CTRP 60
Transformer LV side ACB Rating Percentage Impedance of Transformer
1600 Z
5.00%
Through Fault current at 0.415 kV Bus
21210
Amps
Transformer HV side current as per name plate
87.48
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x 87.48/0.95 101.29
Transformer HV side CT Secondary Pick up Current
Isfl
1.69
IDMT setting at 6.6 kV side
0.337641641
Setting proposed on HV side Ip
0.35
Curve
Extremel Inverse
Transformer LV side current as per name plate
1333.41
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio
Amps
=1.1 x1333.41/0.95 1543.95 Transformer LV side CT Secondary Pick up Current
=1543.95/1600
ACB setting for over current
0.96496875
Setting proposal on ACB
1
Through Fault current at 0.415kV Bus
Amps
HV side current due to fault at 0.415 kV bus
21210.00 1391.50
HV side CT Secondary current due to fault at 0.415kV bus
23.19
Amps
Setting proposed on HV side relay I>>
28(5.5) 6.00
Amps
Setting proposed on LV sideACB I>>
Amps
Setting Calculation for Transformers 1.6 MVA Feeding TG/BALLING SYSTEM MCC
433 V
6.6kV 200/5
2500 A 1600 kVA
Transformer capacity
PT
1600
kVA
Primary Voltage
Vp
6.6
kV
Secondary Voltage
Vs
0.433
kV
Transformer HV side CT details CTHV Turns Ratio
200/5 CTRP 40
Transformer LV side ACB Rating Percentage Impedance of Transformer
2500 Z
5.00%
Through Fault current at 0.415 kV Bus
25244.00
Amps
Transformer HV side current as per name plate
139.97
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x139.97/0.95 162.07
Transformer HV side CT Secondary Pick up Current
Isfl
4.05
IDMT setting at 6.6 kV side
0.810339938
Setting proposed on HV side Ip
0.85
Curve
Extremel Inverse
Transformer LV side current as per name plate
2133.46
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio
Amps
=1.1 x2133.46/0.95 2470.32 Transformer LV side CT Secondary Pick up Current
=2470/2500
ACB setting for over current
0.988128146
Setting proposal on ACB
1
Through Fault current at 0.415kV Bus
Amps
HV side current due to fault at 0.415 kV bus
25244.00 1656.16
HV side CT Secondary current due to fault at 0.415kV bus
41.40
Amps
Setting proposed on HV side relay I>>
50(10) 6.00
Amps
Setting proposed on LV sideACB I>>
Amps
Setting Calculation for Transformers 1.25 MVA Feeding ORE C.SYSTEM MCC
433 V
6.6kV 200/5
2000 A 1250 kVA
Transformer capacity
PT
1250
kVA
Primary Voltage
Vp
6.6
kV
Secondary Voltage
Vs
0.433
kV
Transformer HV side CT details CTHV Turns Ratio
125/1 CTRP 125
Transformer LV side ACB Rating Percentage Impedance of Transformer
2500 Z
5.00%
Through Fault current at 0.415 kV Bus
28226.00
Amps
Transformer HV side current as per name plate
109.35
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x109.35/0.95 126.62
Transformer HV side CT Secondary Pick up Current
Isfl
1.01
IDMT setting at 6.6 kV side
1
Setting proposed on HV side Ip
1
Curve
Extremel Inverse
Transformer LV side current as per name plate
1666.76
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio
Amps
=1.1 x1666.76/0.95 1929.94 Transformer LV side CT Secondary Pick up Current
=1929/2500
ACB setting for over current
0.771975114
Setting proposal on ACB
0.8
Through Fault current at 0.415kV Bus
Amps
HV side current due to fault at 0.415 kV bus
28226.00 1851.80
HV side CT Secondary current due to fault at 0.415kV bus
14.81
Amps
Setting proposed on HV side relay I>>
17.00 4.00
Amps
Setting proposed on LV sideACB I>>
Amps
Setting Calculation for Transformers 15 MVA
11
6.9kV 800/1
1500/1 15000 kVA
Transformer capacity
PT
15000
kVA
Primary Voltage
Vp
11
kV
Secondary Voltage
Vs
6.9
kV
Transformer HV side CT details CTHV Turns Ratio
800/1 CTRP 800
TransformerLV side CT details CTLV
1500/1
Turns Ratio
1500
Percentage Impedance of Transformer
Z
8.35%
Fault current at 6.6 kV Bus as per report
4915.00
Amps
Transformer HV side current as per name plate
787.32
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x 787.32/0.95 911.63
Transformer HV side CT Secondary Pick up Current
Isfl
1.14
IDMT setting at 11kV side
1.15
Setting proposed on HV side Ip
1.15
Curve
Normal Inverse
Transformer LV side current as per name plate
1255.15
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio =1.1 x1255.15/0.95 1453.33
Transformer LV side CT Secondary Pick up Current
=1453/1500
ACB setting for over current
0.968884708
Setting proposed onLV side Ip
1
Curve
Normal Inverse
Fault current at 6.6 kV Bus as per report,for MINIMUM SOURCE Fa 4915.00 HV side current due to fault at 6.6 kV bus 3083.05 HV side CT Secondary current due to fault at 6.6 kV bus
3.85
Setting proposed on HV side relay I>>
5.00 6
Setting proposed on LV side relay I>>
Amps Amps Amps
Setting Calculation for Transformer 20 MVA
110 kV
11 kV 125/1
1250/1 20000 kVA
Transformer capacity
PT
20000
kVA
Primary Voltage
Vp
110
kV
Secondary Voltage
Vs
11
kV
Transformer HV side CT details CTHV Turns Ratio
125/1 CTRP 125
TransformerLV side CT details CTLV
1250/1
Turns Ratio
1250
Percentage Impedance of Transformer
Z
10.00%
Fault current at 11 kV Bus as per report
9996
Amps
Transformer HV side current as per name plate
104.98
Amps
Relay drop off Ratio
0.95
HV Pick up Current
1.1 x HV Currrent/ Drop off ratio =1.1 x104.98/0.95 121.55
Transformer HV side CT Secondary Pick up Current
Isfl
0.97
IDMT setting at 110kV side
1
Setting proposed on HV side Ip
1
Curve
Normal Inverse
Transformer LV side current as per name plate
1049.76
Relay drop off Ratio
0.95
LV Pick up Current
1.1 x LV Currrent/ Drop off ratio =1.1 x1049.76/0.95 1212.04
Transformer LV side CT Secondary Pick up Current
=1212.04/1250
ACB setting for over current
0.969632
Setting proposed onLV side Ip
1
Curve
Normal Inverse
Through Fault current at 11 kV Bus
Amps
HV side current due to fault at 11 kV bus
9996.00 999.60
HV side CT Secondary current due to fault at 11 kV bus
8.00
Amps
Setting proposed on HV side relay I>>
10.00 3
Setting proposed on LV side relay I>>
Amps
ETTIN
DETAIL
F
R
RELAY CONTROL PANEL
110kV SwitchYard -Relay & Control Panel Line Circuit Breaker Relay type Siemens Reyrolle 7SA610
1 SYSTEM CONFIG Description System Frequency Selects the Power System Frequency from 50 or 60 Hz
Range 50, 60
Setting 50Hz
Enabled, Disabled
Enabled
Range
Setting
Prime
CT rated primary
10..50000 A
150A
CT rated secondary
1A/5A
1A
PT rated primary
0~132000 V
11000 V
PT rated Secondary
110…230
110
3 FUNCTION CONFIG Description Phase Overcurrent 50/51
Range Enabled, Disabled
Setting Enabled
Prime
Derived E/F 50N/51N
Enabled, Disabled
Enabled
4 CURRENT PROTECTION 4.1 51-1 Description 51-1 Element Selects whether the 51-1 IDMTL Overcurrent element is enabled
Range Enabled, Disabled
Setting Enabled
51-1 Setting (Ip) Pickup level
0.1..4.00 A STEP 0.1
1
51-1 Char Selects characteristic curve to be IEC or ANSI IDMTL or DTL
Normal Inverse ,Very Normal Inverse ,Extremely Inverse-IEC Inverse ,Long Inverse
51-1 Time Mult (IEC/ANSI) (Tp) Time multiplier (applicable to IEC and ANSI curves but not DTL selection)
0.05..3.20 s, oo
1
Range Enabled, Disabled
Setting Enabled
Setting Dependencies When enabled only active settings are displayed and all others hidden
Prime
2 CT/VT CONFIG Description CTs
PTs
4.2 50-1 Description 50-1 Element Selects whether the INST/DTL Overcurrent element is enabled 50-1 Setting (I>>) Pickup level
0.1..25.00 A STEP 0.1 10
50-1 Delay (T-I>>) Sets operate delay time
0.00..60.00 s
1.05
Prime
150
Prime
1500
5 DERIVED E/F 5.1 51N-1 Description 51N-1 Element Selects whether the 51N-1 IDMTL derived Earth Fault element is enabled
Range Enabled, Disabled
Setting Enabled
51N-1 Setting (IEp) Pickup level
0.05..4.00 A STEP 0.01
0.125
51N-1 Char Selects characteristic curve to be IEC or ANSI IDMTL or DTL
Normal Inverse ,Very Normal Inverse Inverse ,Extremely Inverse ,Long Inverse
51N-1 Time Mult (IEC/ANSI) (TEp) Time multiplier (applicable to IEC and ANSI curves but not DTL selection)
0.05..3.20 s, oo
0.5
Range Enabled, Disabled
Setting Enabled
50N-1 Setting (IE>>) Pickup level
0.05..25.00 A STEP 0.01
1.1
50N-1 Delay (TE>>) Sets operate delay time
0.00..60.00 s
1.45
Description
Range
Setting
67 Element
Enabled, Disabled
Enabled
5.2 50N-1 Description 50N-1 Element Selects whether the DTL derived Earth fault element is enabled
Prime
18.75
Prime
165
6 Directional Current Protection :67
Prime
Selects whether the 51-1 IDMTL Overcurrent element is enabled
67 Setting Pickup level
0.05, 0.06 ... 2.49, 2.5 0.7
67 Char Selects characteristic curve to be IEC or ANSI IDMTL or DTL
DTL, IEC-NI, IEC-VI, IEC-EI, IEC-LTI, ANSIMI, ANSI-VI, ANSI-EI IEC-NI IEC-NI
67 Time Mult (IEC/ANSI) Time multiplier (applicable to IEC and ANSI curves but not DTL selection)
0.025, 0.05 ... 1.575, 1 0.1
Characteristic Angle
-179….180 deg
IEC-NI
-45
105
6.2 67N-1 Description
Range
Setting
67N-1 Element Selects whether the DTL derived Earth fault element is
Enabled, Disabled
Enabled
67N-1 Setting Pickup level
0.05, 0.06 ... 49.5, 50 0.06X In
Gn 67N-1 Delay Sets operate delay time
0, 0.01 ... 14300, 1440 0.65
Characteristic Angle
-179….180 deg
Prime
9
-45
7 Breaker failure Protection -CB Fail Supervision : 50LBB Setting name Range
Setting
50BF Element
Diasabled/Enabled
Enabled
50BF Setting
0.05..2
0.2 x In
50BF-1 delay
20..60000
100ms
50BF-2 delay
20..60000
250 ms
Parameter
Value (Range)
Settings
Unom PRIMARY
1.0 .. 1200.0 kV
110 kV
Unom Secondary
80..125
110 V
CT Primary
10~5000
150 A
CT Secondary SystemStarpoint
1A/5A Solid Earthed Peterson-Coil
Uph / Udelta
0.10 .. 9.99
Rated Frequency
50/60 Hz
Phase Seq
L1 L2 L3L1 L3 L2
Distance Unit
km/Miles
km
Full scale volt
1.0~1200
110 kV
Full scale Current
10~5000
150 A
Line Angle
10~89 deg
P,Q sign
Not reversedReversed not reversed
8
30
Distance Protection setting 21
R1 Conductor in ohms per km @ 85 deg C
Unit
1A Solid Earthed 1.73 50 Hz L1 L2 L3
67.38 deg 0.16 ohms/km
X1 Conductor in ohms per km
0.0050~9.5
0.39 ohms/km
c'
0.0~100
0.01 mfd / km
Z1 Moose conductor in ohms per km @ 85 deg C R0 Zero seq.Moose conductor in ohms per km @ 85 deg C . X0 zero seq.Moose conductor in ohms per km
0.42 ohms/km . o ms m ~ .
Z0 Moose conductor in ohms per km @ 85 deg C Line length Adj short line Adj Long line Line Positive Sequence impedance (mag)
0.1~1000
.
o ms m
.
o ms m 5 km
5.22 km 16.23 km . ms
.
Line Positive Sequence impedance (Phase angle ) Line Positive Sequence impedance (mag) sec LineZero Sequence impedance (mag)
0.32 0.0050~9.5
Line zero Sequence impedance (Phase angle ) LineZero Sequence impedance (mag)sec
eg
6.70 Ohms 76.60 deg
0.0050~9.5
Zone 1 reach impedance setting (mag)
1.01 1.68 Ohms
Zone 1 reach impedance setting (Phase angle)
67.38 deg
Zone 1 reach impedance setting (mag) sec
0.25 Ohms
Zone 1 reach impedance setting (Phase angle)
67.38 deg
Time delay Zone 1
0 sec
CT ratio/VT ratio for impedance Conversion
0.15
Zone 2 reach impedance setting (mag)
1.10 Ohms
Zone 2 reach impedance setting (Phase angle)
67.38 deg
Zone 2 reach impedance setting (mag) sec
0.16 Ohms
Zone2 reach impedance setting (Phase angle)
67.38 deg
Zone 3 reach impedance setting (mag)
6.83 Ohms
Zone 3 reach impedance setting (Phase angle)
79.46 deg
Zone 3 reach impedance setting (mag) sec
1.02 Ohms
Zone3 reach impedance setting (Phase angle)
79.46 deg
Time delay Zone 2
0.5 sec
Time delay Zone 3 Re/R1
1 sec 0.31
Xe/X1
0.79
Ko
0.73 .
Xm/Xi
0.59
R1 Phase-Phase
0.70
X1 Phase-Phase
0.23
R2 Phase-Phase
0.79
X2 Phase-Phase
0.44
R3 Phase-Phase
1.12
X3 Phase-Phase
1.24
Reverse Resistive reach
0.05
Reverse Reactive Reach
0.12
Vector Surge Protection Vector Surge Relay CSPC make MRG2 Function Connection of the input V.T.s Vector surge logic ΔΘ Voltage theshold for vector surge measuring
Range Setting Y/DELT Y 1Ph / 3Ph 3Ph 2°...22° (EXIT) 6° U N = 100 V: 5...100 80 V U N = 230 V: 12...230 V U N = 400
Units
deg V
110kV SwitchYard -Relay & Control Panel Transformer Circuit Breaker Relay type Siemens Reyrolle 7UT612
1 SYSTEM CONFIG Description System Frequency Selects the Power System Frequency from 50 or 60 Hz
Range 50, 60
Setting 50Hz
Enabled, Disabled
Enabled
Range
Setting
Prime
CT rated primary
10..50000 A
125A
CT rated secondary
1A/5A
1A
PT rated primary
0~132000 V
11000 V
PT rated Secondary
110…230
110
3 FUNCTION CONFIG Description Phase Overcurrent 50/51
Range Enabled, Disabled
Setting Enabled
Prime
Derived E/F 50N/51N
Enabled, Disabled
Enabled
4 CURRENT PROTECTION 4.1 51-1 escr pt on 51-1 Element Selects whether the 51-1 IDMTL Overcurrent element is enabled
ange Enabled, Disabled
ett ng Enabled
51-1 Setting (Ip) Pickup level
0.1..4.00 A STEP 0.1
1
51-1 Char Selects characteristic curve to be IEC or ANSI IDMTL or DTL
Normal Inverse ,Very Normal Inverse ,Extremely Inverse-IEC Inverse ,Long Inverse
51-1 Time Mult (IEC/ANSI) (Tp) Time multiplier (applicable to IEC and ANSI curves but not DTL selection)
0.05..3.20 s, oo
1
Range Enabled, Disabled
Setting Enabled
Setting Dependencies When enabled only active settings are displayed and all others hidden
Prime
2 CT/VT CONFIG Description CTs
PTs
4.2 50-1 Description 50-1 Element Selects whether the INST/DTL Overcurrent element is enabled 50-1 Setting (I>>) Pickup level
0.1..25.00 A STEP 0.1 10
50-1 Delay (T-I>>) Sets operate delay time
0.00..60.00 s
0.9
r me
125
Prime
1250
