Design,Supply,Installation,Testing Commissioning of 400/230/33kV Aminbazar Grid Substation

DC LOAD CALCULATION

Power
No. Feeder Type Function Model Manufacturer Remarks
Consumption (W)
1 400kV Control Diameter Panel
Control
1.1 Bay Control Unit (Main) REC 670 ABB 50x3=150 Fed from DC BUS 1
Diameter-1
Bay Control Mimic (Backup) BCM 800 ABB 5 Fed from DC BUS 1
Multifunction Meter Elite 440 SECURE 2x10=20 Fed from DC BUS 1
KV Meter 10 Fed from DC BUS 1
Ammeter RESHAB 3x5.5=16.5 Fed from DC BUS 1
Fed from DC BUS 1 & 2
Controlled Switch (PSD) PSD02 Siemens 15x3=45
(Change-over)

DC BUS 1 246.5
Total
DC BUS 2 45

Control
1.2 Bay Control Unit (Main) REC 670 ABB 50x3=150 Fed from DC BUS 1
Diameter-2
Bay Control Mimic (Backup) BCM 800 ABB 5 Fed from DC BUS 1
Multifunction Meter Elite 440 SECURE 2x10=20 Fed from DC BUS 1
KV Meter 10 Fed from DC BUS 1
Ammeter RESHAB 3x5.5=16.5 Fed from DC BUS 1
Fed from DC BUS 1 & 2
Controlled Switch (PSD) PSD02 Siemens 15x3=45
(Change-over)

DC BUS 1 246.5
Total
DC BUS 2 45

Control
1.3 Bay Control Unit (Main) REC 670 ABB 50x3=150 Fed from DC BUS 1
Diameter-3
Bay Control Mimic (Backup) BCM 800 ABB 5 Fed from DC BUS 1
Multifunction Meter Elite 440 SECURE 2x10=20 Fed from DC BUS 1
KV Meter 10 Fed from DC BUS 1
Ammeter RESHAB 3x5.5=16.5 Fed from DC BUS 1
Fed from DC BUS 1 & 2
Controlled Switch (PSD) PSD02 Siemens 15x3=45
(Change-over)

DC BUS 1 246.5
Total
DC BUS 2 45

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Design,Supply,Installation,Testing Commissioning of 400/230/33kV Aminbazar Grid Substation

Control
1.4 Bay Control Unit (Main) REC 670 ABB 50x3=150 Fed from DC BUS 1
Diameter-4
Bay Control Mimic (Backup) BCM 800 ABB 5 Fed from DC BUS 1
Multifunction Meter Elite 440 SECURE 2x10=20 Fed from DC BUS 1
KV Meter 10 Fed from DC BUS 1
Ammeter RESHAB 3x5.5=16.5 Fed from DC BUS 1
Fed from DC BUS 1 & 2
Controlled Switch (PSD) PSD02 Siemens 15x3=45
(Change-over)

DC BUS 1 246.5
Total
DC BUS 2 45

2 400kV Line Protection Panel

2.1 Gopalganj-1 Distance Protection (Main-1) REL 670 ABB 50 Fed from DC BUS 1
Differential Protection (Main-2) REL 670 ABB 50 Fed from DC BUS 2
Trip Coil Supervision 1 TSG 930 JUCKER 9.6 Fed from DC BUS 1
Trip Coil Supervision 2 TSG 930 JUCKER 9.6 Fed from DC BUS 2

DC BUS 1 59.6
Total
DC BUS 2 59.6

2.2 Gopalganj-2 Distance Protection (Main-1) REL 670 ABB 50 Fed from DC BUS 1
Differential Protection (Main-2) REL 670 ABB 50 Fed from DC BUS 2
Trip Coil Supervision 1 TSG 930 JUCKER 9.6 Fed from DC BUS 1
Trip Coil Supervision 2 TSG 930 JUCKER 9.6 Fed from DC BUS 2

DC BUS 1 59.6
Total
DC BUS 2 59.6

2.3 Meghnaghat-1 Distance Protection (Main-1) REL 670 ABB 50 Fed from DC BUS 1
Differential Protection (Main-2) REL 670 ABB 50 Fed from DC BUS 2
Trip Coil Supervision 1 TSG 930 JUCKER 9.6 Fed from DC BUS 1
Trip Coil Supervision 2 TSG 930 JUCKER 9.6 Fed from DC BUS 2

DC BUS 1 59.6
Total
DC BUS 2 59.6

2.4 Meghnaghat-2 Distance Protection (Main-1) REL 670 ABB 50 Fed from DC BUS 1
Differential Protection (Main-2) REL 670 ABB 50 Fed from DC BUS 2
Trip Coil Supervision 1 TSG 930 JUCKER 9.6 Fed from DC BUS 1
Trip Coil Supervision 2 TSG 930 JUCKER 9.6 Fed from DC BUS 2

DC BUS 1 59.6
Total
DC BUS 2 59.6

DC BUS 1 59.6
2.5 Future T/L Total
DC BUS 2 59.6

3 400kV Transformer Bays

400/230/33kV Transformer Biased Differential Protection
3.1 RET 670 ABB 50 Fed from DC BUS 1
ATR-1 (Main-1)
Transformer Biased Differential & REF
RET 670 ABB 50 Fed from DC BUS 2
Protection (Main-2)
Automatic Voltage Regarding Relay REG sys A-Eberle 15 Fed from DC BUS 1
Trip Coil Supervision 1 TSG 930 JUCKER 9.6 Fed from DC BUS 1
Trip Coil Supervision 2 TSG 930 JUCKER 9.6 Fed from DC BUS 2

DC BUS 1 74.6
Total
DC BUS 2 59.6

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Design,Supply,Installation,Testing Commissioning of 400/230/33kV Aminbazar Grid Substation

400/230/33kV Transformer Biased Differential Protection

3.2 RET 670 ABB 50 Fed from DC BUS 1
ATR-2 (Main-1)
Transformer Biased Differential & REF
RET 670 ABB 50 Fed from DC BUS 2
Protection (Main-2)
Automatic Voltage Regarding Relay REG sys A-Eberle 15 Fed from DC BUS 1
Trip Coil Supervision 1 TSG 930 JUCKER 9.6 Fed from DC BUS 1
Trip Coil Supervision 2 TSG 930 JUCKER 9.6 Fed from DC BUS 2

DC BUS 1 74.6
Total
DC BUS 2 59.6

400/230/33kV Transformer Biased Differential Protection

3.3 RET 670 ABB 50 Fed from DC BUS 1
ATR-3 (Main-1)
Transformer Biased Differential & REF
RET 670 ABB 50 Fed from DC BUS 2
Protection (Main-2)
Automatic Voltage Regarding Relay REG sys A-Eberle 15 Fed from DC BUS 1
Trip Coil Supervision 1 TSG 930 JUCKER 9.6 Fed from DC BUS 1
Trip Coil Supervision 2 TSG 930 JUCKER 9.6 Fed from DC BUS 2

DC BUS 1 74.6
Total
DC BUS 2 59.6

4 400kV BBP Panel

Fed from DC BUS 1 & 2
4.1 Main Panel Busbar protection central unit REB500CU ABB 100
(Change-over)
Fed from DC BUS 1 & 2
Station Protection Unit REB500BU ABB 12x11=132
(Change-over)

DC BUS 1 232
Total
DC BUS 2 232

Fed from DC BUS 1 & 2

4.2 Redundant Panel Busbar protection central unit REB500CU ABB 100
(Change-over)
Fed from DC BUS 1 & 2
Station Protection Unit REB500BU ABB 12x11=132
(Change-over)

DC BUS 1 232
Total
DC BUS 2 232

5 400kV Tariff Meter Panel

Tariff Meter
5.1 Gopalganj-1 Main Meter CEWE 7
Panel-Main
Gopalganj-2 Main Meter CEWE 7
Meghnaghat-1 Main Meter CEWE 7 Fed from DC BUS 1 & 2
Meghnaghat-2 Main Meter CEWE 7 (Change-over)
400/230/33kV ATR-1 Main Meter CEWE 7
400/230/33kV ATR-2 Main Meter CEWE 7
400/230/33kV ATR-3 Main Meter CEWE 7

DC BUS 1 49
Total
DC BUS 2 49

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Design,Supply,Installation,Testing Commissioning of 400/230/33kV Aminbazar Grid Substation

Tariff Meter
5.2 Gopalganj-1 Meter-Check Elster 7
Panel-Check
Gopalganj-2 Meter-Check Elster 7
Meghnaghat-1 Meter-Check Elster 7 Fed from DC BUS 1 & 2
Meghnaghat-2 Meter-Check Elster 7 (Change-over)
400/230/33kV ATR-1 Meter -Check Elster 7
400/230/33kV ATR-2 Meter -Check Elster 7
400/230/33kV ATR-3 Meter- Check Elster 7

DC BUS 1 49
Total
DC BUS 2 49

6 33kV Control & Protection Panel

33kV Control &
6.1 Protection Panel- Bay Control Unit 50 Fed from DC BUS 1
1
Bay Control Mimic BCM 800 ABB 5 Fed from DC BUS 1
Fed from DC BUS 1 & 2
Control and Protection Main Unit REF 615 ABB 12
(Change-over)
Fed from DC BUS 1 & 2
Earth fault protection (For 415V) REB611 ABB 12
(Change-over)

DC BUS 1 79
Total
DC BUS 2 24

33kV Control &

6.2 Protection Panel- Bay Control Unit 50 Fed from DC BUS 1
2
Bay Control Mimic 5 Fed from DC BUS 1
Fed from DC BUS 1 & 2
Control and Protection Main Unit REF 615 ABB 12
(Change-over)
Fed from DC BUS 1 & 2
Earth fault protection (For 415V) REB611 ABB 12
(Change-over)

DC BUS 1 79
Total
DC BUS 2 24

7 0.415kV Control & Protection Panel

Fed from DC BUS 1 & 2
Control Unit 25
(Change-over)
Fed from DC BUS 1 & 2
Protection Unit 15
(Change-over)

DC BUS 1 35
Total
DC BUS 2 35

8 Others
Fed from DC BUS 1 & 2
8.1 Emergency Light Main Control Room + SPR1 + SPR2 120+120=120=360
(Change-over)

8.2 Fire Alarm Fed from DC BUS 1 & 2

System 50
(Change-over)
Fed from DC BUS 1 & 2
2500
8.3 UPS (Change-over)

DC BUS 1
Total
DC BUS 2

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Design,Supply,Installation,Testing Commissioning of 400/230/33kV Aminbazar Grid Substation

AC LOAD CALCULATION

1 . AC load for 400kV bays 110V battery charger-1,2

1)Battery charger rating 2x120 A

2)AC load
(𝐶ℎ𝑎𝑟𝑔𝑒𝑟 𝐼𝑛𝑝𝑢𝑡 𝑙𝑜𝑎𝑑)/
AC LOAD (𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦
= ×𝑃𝑜𝑤𝑒𝑟 𝐹𝑎𝑐𝑡𝑜𝑟)

= 38.824 kVA
Here, Charger Input Current, I= 240
Charger Input Voltage, V= 110
Power Factor, Cosθ= 0.85
Efficiency, ŋ= 0.8

2 . AC load for 48V battery charger-1,2

1)Battery charger rating 2x90 A

2)AC load
(𝐶ℎ𝑎𝑟𝑔𝑒𝑟 𝐼𝑛𝑝𝑢𝑡 𝑙𝑜𝑎𝑑)/
AC LOAD (𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦
= ×𝑃𝑜𝑤𝑒𝑟 𝐹𝑎𝑐𝑡𝑜𝑟)

= 12.706 kVA
Here, Charger Input Current, I= 180
Charger Input Voltage, V= 48
Power Factor, Cosθ= 0.85
Efficiency, ŋ= 0.8

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Design,Supply,Installation,Testing Commissioning of 400/230/33kV Aminbazar Grid Substation

3 . AC LOAD FOR 400/235/33kV 520MVA ATR-1

Load[VA]
Description Voltage [V] Current [A] Q'ty
Unit Total
3-Phase AC load for motor (AC 415V)
Cooling Fan 415 0.9 48 646.155 31015.4

1-Phase AC load for motor (AC 240V)

Receptacle 240 10.00 1 2400.0 2400.0

Space Heater 240 0.43 1 103.2 103.2

Fluorescent Lamp 240 0.10 1 24.0 24.0

Local Control Panel 240 1.02 1 244.8 244.8

Total 33787.4

4 . AC LOAD FOR 400/235/33kV 520MVA ATR-2

Load[VA]
Description Voltage [V] Current [A] Q'ty
Unit Total
3-Phase AC load for motor (AC 415V)
Cooling Fan 415 0.9 48 646.155 31015.4

1-Phase AC load for motor (AC 240V)

Receptacle 240 10.00 1 2400.0 2400.0

Space Heater 240 0.43 1 103.2 103.2

Fluorescent Lamp 240 0.10 1 24.0 24.0

Local Control Panel 240 1.02 1 244.8 244.8

Total 33787.4

5 . AC LOAD FOR 400/235/33kV 520MVA ATR-3

Load[VA]
Description Voltage [V] Current [A] Q'ty
Unit Total
3-Phase AC load for motor (AC 415V)
Cooling Fan 415 0.9 48 646.155 31015.44

1-Phase AC load for motor (AC 240V)

Receptacle 240 10.00 1 2400.0 2400.0

Space Heater 240 0.43 1 103.2 103.2

Fluorescent Lamp 240 0.10 1 24.0 24.0

Local Control Panel 240 1.02 1 244.8 244.8

Total 33787.4

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Design,Supply,Installation,Testing Commissioning of 400/230/33kV Aminbazar Grid Substation

6 . LOAD LIST FED FROM MAIN Sub-ACDB 1

LOAD[W] DEMAND FACTOR POWER FACTOR TOTAL LOAD
No. LOAD DESCRIPTION Q'ty
C I C I C I [VA]
1 SPR-1 Lighting & Sockets 1 3000 1.00 0.85 3529

2 Air conditioner for SPR-1 2 1285 1.00 0.85 3024

3 Transformer-1 OLTC & Cooling 1 33787.4

4 Transformer-2 OLTC & Cooling 1 33787.4

5 Diameter-1 CP Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

6 Diameter-2 CP Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

7 Line-1 Protection Panel Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

8 Line-2 Protection Panel Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

9 ATR-1 Protection Panel Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

10 ATR-2 Protection Panel Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

11 DFDR Panel Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

12 Sub-DCDB 1 1 104
Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4

13 BBP Aux. Supply (Main) 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

14 BBP Aux. Supply (Redundant) 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

15 Aux. Power for MK Panel(CB Motor) 6 6120 0.3 0.85 12960

16 Aux. Power for MK Panel(CB Aux.) 6 100 0.5 0.85 353

17 Aux. Power for MK Panel(DS& ES Motor) 18 2238 0.3 0.85 14218

18 Aux. Power for MK Panel(DS& ES Aux) 18 100 0.5 0.85 1059

GRAND TOTAL FROM SUB-ACDB 1 [VA] 103757.9

NOTE: 1) C= Continuous, I=Intermittent
2) Demand factor is assumed to be 0.3 since all the intermittent loads are not envisaged to be operated simultaneously.
3) Power consumption of power socket in panels is not considered since socket outlets.

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Design,Supply,Installation,Testing Commissioning of 400/230/33kV Aminbazar Grid Substation

7 . LOAD LIST FED FROM MAIN Sub-ACDB 2

LOAD[W] DEMAND FACTOR POWER FACTOR TOTAL LOAD
No. LOAD DESCRIPTION Q'ty
C I C I C I [VA]
1 SPR-2 Lighting & Sockets 1 3000 1.00 0.85 3529

2 Air conditioner for SPR-2 2 1285 1.00 0.85 3024

3 Transformer-3 OLTC & Cooling 1 33787.4

4 Diameter-3 CP Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

5 Diameter-4 CP Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

6 Line-3 Protection Panel Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

7 Line-4 Protection Panel Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

8 ATR-3 Protection Panel Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

9 Metering Panel (Main) Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4

10 Metering Panel (Check) Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4

11 33kV CRP-1 Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

12 33kV CRP-2 Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

13 Sub-DCDB 2 1 104
Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4

14 Aux. Power for MK Panel(CB Motor) 6 6120 0.3 0.85 12960

15 Aux. Power for MK Panel(CB Aux.) 6 100 0.5 0.85 353

16 Aux. Power for MK Panel(DS& ES Motor) 18 2238 0.3 0.85 14218

17 Aux. Power for MK Panel(DS& ES Aux) 18 100 0.5 0.85 1059

GRAND TOTAL FROM SUB-ACDB 2 [VA] 69970.4

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Design,Supply,Installation,Testing Commissioning of 400/230/33kV Aminbazar Grid Substation

NOTE: 1) C= Continuous, I=Intermittent

2) Demand factor is assumed to be 0.3 since all the intermittent loads are not envisaged to be operated simultaneously.
3) Power consumption of power socket in panels is not considered since socket outlets.

8 . LOAD LIST FED FROM MAIN ACDB-1

LOAD[W] DEMAND FACTOR POWER FACTOR
TOTAL LOAD
No. LOAD DESCRIPTION Q'ty
[VA]
C I C I C I
1 Sub-ACDB 1 1 103757.9

2 Transformer-1 Oil Filteration 1 100630

3 Transformer-2 Oil Filteration 1 100630

4 110V DC Charger-1 1 19411.8

5 48V DC Charger-1 1 6352.9

6 Fire Fighting Pump-1 1 5000

7 Control House Lighting & Sockets 1 3000 1.00 0.85 3529

8 SAS Panel 1&2 2 4513

Equipments 1 1830 1.00 0.85 2153
Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4

9 110V DCDB 1&2 Aux. Supply 2 208

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4

10 48V DCDB 1&2 Aux. Supply 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4

10 Guard House 1 5040

TOTAL 349176.6
NOTE: 1) Fire pump & oil treatment equipment will not be operatedat the same time

9 . LOAD LIST FED FROM MAIN ACDB-2

LOAD[W] DEMAND FACTOR POWER FACTOR
TOTAL LOAD
No. LOAD DESCRIPTION Q'ty
[VA]
C I C I C I
1 Sub-ACDB 2 1 69970.4

2 Transformer-3 Oil Filteration 1 100630

3 110V DC Charger-2 1 19411.8

4 48V DC Charger-2 1 6352.9

5 Fire Fighting Pump-2 1 5000

6 Air conditioner for Control House 2 1285 1.00 0.85 3024

7 UPS 1 2809
Equipments 1 2300 1.00 0.85 2706
Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4

8 Telecom Panel 1 104

Space Heater 1 200 0.50 1 100
Lamp 1 10 0.3 0.85 4
Power Socket 1 3600 0 0.85 0

9 Water Pump 1 5000

TOTAL 212302.1
NOTE: 1) Fire pump & oil treatment equipment will not be operatedat the same time

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Design,Supply,Installation,Testing Commissioning of 400/230/33kV Aminbazar Grid Substation

No. DESCRIPTION Q'ty

LOAD [KVA]
1) Load fed from Main ACDB-1 1 349.17658588
2) Load fed from Main ACDB-2 1 212.30214588

TOTAL 561.47873176

(𝑆𝑢𝑚 𝑜𝑓 𝑙𝑜𝑎𝑑𝑠 𝑓𝑒𝑑 𝑓𝑟𝑜𝑚 𝑀𝑎𝑖𝑛 𝐴𝐶𝐷𝐵 1 & 2)/

Total Load =
(𝐷𝑖𝑣𝑒𝑟𝑠𝑖𝑡𝑦 𝐹𝑎𝑐𝑡𝑜𝑟)

= 510.44 KVA

Page 10 of 10