Battery Sizing 3 Trafo(Latest)

LARSEN & TOUBRO LIMITED ECC Division - EDRC (Electrical)

PROJECT

TITLE

:

33/11kV GIS S/S - AL AIN

Doc. No. : G1409--RL7370J552A PREPARED CHECKED APPROVED

:

BATTERY SIZING CALCULATIONS - TYPE B S/S (UMM GHAFA & MASAKIN) 1.0 DC System Details Type of Battery Nominal System Voltage (NSV) Highest System Voltage (HSV) Lowest System Voltage (LSV) Voltage per cell during float Charging (VPC) Minimum Operating Temperature End Cell Voltage

SA

= = = = = = =

2.0 Continous loads 2.1 33 kV System Relay/Eqpt. Ref

Continuous Load (CL in watts)

I Cable feeder:1) GIS Bay control unit

REF542plus

2) Control panel Alarm / Annunciator Semaphore Indicator (1) Multifunction meter 3) Relay panel Trip circuit relay (4*7) Receive repeat relay Dir O/C Dir E/F DC supply supervision relay Indication lamp

40

2.7 2.1 6

SPER1C1 B74 SPAS348C3 REJ527 REXSF1

28 1 10 4 2.6 2

Total load

98.4

II 33/11kV Trafo.feeder:1) GIS Bay control unit

REF542plus

2) Control panel Alarm / Annunciator Semaphore Indicator (1) Multifunction meter 3) Relay panel Differential relay O/C relay LV REF relay LV SBEF relay Trip circuit relay DC supply supervision relay Indication lamp

40

4.8 2.1 6

RET316*4 REJ525 SPAJ115C REJ521 SPER1C1 RXSF1

20 5 4 5 28 2.6 2

Total load

119.5

III Bus section, riser and measuring panel :1) GIS Bay control unit 2) Control panel Alarm / Annunciator

REF542plus

40

4.8

PAGE 1+1 OF 20+2

Ni - Cd 110 V DC ### V DC 99 V DC 1.45 V 10 °C 1.14 V

AKS

KR

LARSEN & TOUBRO LIMITED ECC Division - EDRC (Electrical)

PROJECT

TITLE

:

33/11kV GIS S/S - AL AIN

Doc. No. : G1409--RL7370J552A PREPARED CHECKED APPROVED

:

BATTERY SIZING CALCULATIONS - TYPE B S/S (UMM GHAFA & MASAKIN) Semaphore indicator 4.2 Synchro check relay SPAU140C 5

PAGE 2+1 OF 20+2

SA

AKS

KR

LARSEN & TOUBRO LIMITED ECC Division - EDRC (Electrical)

PROJECT

TITLE

:

:

33/11kV GIS S/S - AL AIN

Doc. No. : G1409--RL7370J552A PREPARED CHECKED APPROVED

BATTERY SIZING CALCULATIONS - TYPE B S/S (UMM GHAFA & MASAKIN)

3) Relay panel O/C & E/F relay Trip circuit relay DC supply supervision relay Indicating Lamp

REJ525 SPER1C1 RXSF1

SA

5 28 2.6 2

Total load

91.6

IV Busbar protection panel :Busbar differential protection relayREB500 Indicating Lamps Aux. relay

11 4 5

Total load

20

V Common alarm panel :Alarm / Annunciator

13

Total load

13

2.2 11 kV System I 33/11kV Trafo.incomer feeder:Bay control unit REF542plus Voltage supervision relay (2) Trip circuit supervision relay REF protection relay SPAJ 115C Misc.

24 6 3 6 20

Total load

59

II Bus riser and measuring panel :Voltage supervision relay (2)

6

Total load

6

III Bus section panel :Bay control unit Voltage supervision relay (2) Trip circuit supervision relay Misc.

REF542plus

24 6 3 10

Total load

43

IV Station aux. Transformer panel :Bay control unit REF542plus Voltage supervision relay (2) Trip circuit supervision relay Misc.

24 4 3 20

Total load

51

V Cable feeder panel :Bay control unit Voltage supervision relay (2)

REF542plus

24 6

PAGE 3+1 OF 20+2

AKS

KR

LARSEN & TOUBRO LIMITED ECC Division - EDRC (Electrical)

PROJECT

TITLE

:

33/11kV GIS S/S - AL AIN

Doc. No. : G1409--RL7370J552A PREPARED CHECKED APPROVED

:

BATTERY SIZING CALCULATIONS - TYPE B S/S (UMM GHAFA & MASAKIN) Trip circuit supervision relay 3 Misc. 20 Total load

53

PAGE 4+1 OF 20+2

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AKS

KR

LARSEN & TOUBRO LIMITED ECC Division - EDRC (Electrical)

PROJECT

TITLE

:

:

33/11kV GIS S/S - AL AIN

Doc. No. : G1409--RL7370J552A PREPARED CHECKED APPROVED

BATTERY SIZING CALCULATIONS - TYPE B S/S (UMM GHAFA & MASAKIN)

SA

VI Bus interconnector panel :Bay control unit REF542plus Misc.

24 10

Total load

34

VII Capacitor Bank panel :Bay control unit Voltage supervision relay (2) Trip circuit supervision relay Misc.

REF542plus

24 4 3 10

Total load

41

VIII Underfrequency Load shedding panel :Load shedding relay SPAF 340C3

60

Total load

60

2.3 DC System Battery charger & DCDB :Auxiliary relay Indicating lamp (3*2W) Total load

5 6 11

2.4 Trafo. OLTC AVR relay Indicating lamp (5*2W)

10 10

Total load

20

2.5 LVAC Panel Stand by Earthfault Relay (2nos.) Indicating lamp (3*2W)

10 6

Total load

16

THE DC LOADS OF LDC ARE MET BY THE 48V DC BATTERY.

PAGE 5+1 OF 20+2

AKS

KR

LARSEN & TOUBRO LIMITED ECC Division - EDRC (Electrical)

PROJECT

TITLE

:

:

33/11kV GIS S/S - AL AIN

Doc. No. : G1409--RL7370J552A PREPARED CHECKED APPROVED

BATTERY SIZING CALCULATIONS - TYPE B S/S (UMM GHAFA & MASAKIN)

PAGE 6+1 OF 20+2

SA

AKS

KR

LARSEN & TOUBRO LIMITED ECC Division - EDRC (Electrical)

PROJECT

TITLE

:

:

33/11kV GIS S/S - AL AIN

Doc. No. : G1409--RL7370J552A PREPARED CHECKED APPROVED

BATTERY SIZING CALCULATIONS - TYPE B S/S (UMM GHAFA & MASAKIN)

SA

AKS

KR

2.5 Continuous Load Summary S. No

Feeder

1

33 kV Cable Feeder

2

33/11 kV Trafo. Feeder (33 kV side)

3

33 kV Bus section , riser and measuring panel

4

Continuous Load per feeder (Watts)

No. of feeders

Total Load (Watts)

98.4

6

590.4

119.5

3

358.5

91.6

2

183.2

Busbar protection panel

20

1

20

5

Common Alarm panel

13

1

13

6

33 kV trafo. feeder (11 kV side)

59

3

177

7

11 kV Bus riser and measuring panel

6

3

18

8

11 kV Bus section panel

43

2

86

9

Station aux. trafo panel

51

2

102

10

11 kV cable feeder

53

17

901

11

11 kV Bus interconnector panel

34

2

68

12

11 kV Capacitor bank panel

41

3

123

13

11kV Underfrequency load shedding panel

60

1

60

14

DC System (Battery, Battery charger & DCDB)

11

2

22

15

Trafo OLTC

20

3

60

16

LVAC Panel

16

1

16

Total continuous load

= 2798.1

Continuous load in Amperes

= 2798.10 = 28.26

3.0 Momentary tripping load Momentary tripping load per 33kV CB

=

250

Maximum No. of breakers in 33kV busbar protection Zone

=

5

Momentary tripping load of one busbar protection zone

=

1250

Watts

Annunciation window load ( 2 Windows + 1 Hooter considered)

=

50

Watts

Total Tripping load

=

1300

Watts

PAGE 7+1 OF 20+2

Watts

LARSEN & TOUBRO LIMITED ECC Division - EDRC (Electrical)

PROJECT

TITLE

:

:

33/11kV GIS S/S - AL AIN

Doc. No. : G1409--RL7370J552A PREPARED CHECKED APPROVED

BATTERY SIZING CALCULATIONS - TYPE B S/S (UMM GHAFA & MASAKIN)

SA =

13.13

AKS

KR

A

Tripping time = 1 sec 1.

Since the operation of tripping relay and trip coil is serial, the maximum load among them (i.e trip coil load) is considered for calculation.

4.0 Momentary closing load Momentary closing load per 33kV CB .

=

250

= 2.53 One minute duration of this load is considered to account for closing operation of all breakers

Watts A

5.0 CB closing spring Charging Load CB Motor rating

=

180

Watts

Max.no. of CBs in one 33kV bus section

=

5

Total spring charging load

=

900

Watts

Spring Charging Duration

=

30

Sec.

Disconnector motor rating

=

180

Watts

Max.no. of disconnectors in one 33kV bus section

=

6

Total spring charging load

=

1080

Watts

Spring Charging Duration

=

30

Sec.

7.0 Emergency Lighting Load

=

1324

=

9.09

=

10.91

=

13.37

6.0 Disconnector closing spring Charging Load

Watts

8.0 Load Cycle Duration

Load description

Load in Amperes

1 second

CB Tripping load + Continuous load + Emergency lighting load

54.77

360 minutes

Continuous load + Emergency lighting load

41.64

240 minutes

Continuous load

28.26

1 minute

Continuous load + CB Closing load

30.79

30 seconds

Continuous load + CB closing Spring charging load

37.35

1 second

Continuous load + CB Tripping load

41.39

1 minute

Continuous load + CB Closing load

30.79

30 seconds

Continuous load + CB closing Spring charging load

37.35

1 second

Continuous load + CB Tripping load

41.39

30 seconds

Continuous load + Disconnector closing Spring charging load

39.17

PAGE 8+1 OF 20+2

LARSEN & TOUBRO LIMITED ECC Division - EDRC (Electrical)

PROJECT

TITLE

:

:

33/11kV GIS S/S - AL AIN

Doc. No. : G1409--RL7370J552A PREPARED CHECKED APPROVED

BATTERY SIZING CALCULATIONS - TYPE B S/S (UMM GHAFA & MASAKIN)

PAGE 9+1 OF 20+2

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DATE 21.04.2004

PAGE 10+1 OF 20+2

DATE 21.04.2004

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DATE 21.04.2004

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DATE 21.04.2004

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DATE 21.04.2004

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DATE 21.04.2004

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DATE 21.04.2004

Watts /99 A

PAGE 16+1 OF 20+2

DATE 21.04.2004

A

A

A

Load in Amperes

PAGE 17+1 OF 20+2

DATE 21.04.2004

PAGE 18+1 OF 20+2

LARSEN & TOUBRO LIMITED ECC Division - EDRC (Electrical)

PROJECT

: 33/11kV GIS S/S - AL AIN

Doc. No. : G1409--RL7370J552A PREPARED CHECKED APPROVED

TITLE

: BATTERY SIZING CALCULATIONS - TYPE B S/S (UMM GHAFA & MASAKIN)

Calculation carried out at temp.

Period

Section 1 1

Load (A)

ambient minimum maximum Changes in Load (A)

Duration of period (minutes)

KR

21.04.2004

End of Section (minute)

Kt Factor

Temp Derating factor Tf

Required sec. Size (amp*Kt*Tf)

First 1 Period only - if A2>A1, go to section 2- No A1 =

54.77

A1-0 =

54.77

M1

First 2 Periods only - if A3>A2, go to section 3- No A1 54.77 A1-0 54.77 M1 A2 41.64 A2-A1 -13.13 M2

Section 3 Section 4 Section 5 Section6 1 2 3 4 5 6

First 3 Periods only - if A4>A3, go to section 4- Yes First 4 Periods only - if A5>A4, go to section 5- Yes First 5 Periods only - if A6>A5, go to section 6- Yes First 5 Periods only - if A7>A6, go to section 7- No A1 54.77 A1-0 54.77 M1 A2 41.64 A2-A1 -13.13 M2 A3 28.26 A3-A2 -13.37 M3 A4 30.79 A4-A3 2.53 M4 A5 37.35 A5-A4 6.57 M5 A6 41.39 A6-A5 4.04 M6

Section10 1 2 3 4 5 6 7 8 9 10

AKS

22 deg.C 21 deg. C 23 deg. C

Section 2 1 2

Section7 Section8 Section9 1 2 3 4 5 6 7 8 9

SA

DATE

First 7 Periods only - if A8>A7, go to section 8- Yes First 8 Periods only - if A9>A8, go to section9- Yes First 9 Periods only - if A10>A9, go to section10- No A1 54.77 A1-0 54.77 M1 A2 41.64 A2-A1 -13.13 M2 A3 28.26 A3-A2 -13.37 M3 A4 30.79 A4-A3 2.53 M4 A5 37.35 A4-A3 6.57 M5 A6 41.39 A4-A3 4.04 M6 A7 30.79 A4-A3 -10.61 M7 A8 37.35 A4-A3 6.57 M8 A9 41.39 A4-A3 4.04 M9

0.02

0.02 360.00

0.02 360.00 240.00 1.00 0.50 0.02

0.02 360.00 240.00 1.00 0.50 0.02 1.00 0.50 0.02

First 10 Periods only - if A11>A10, go to section 11- No A1 54.77 A1-0 54.77 M1 0.02 A2 41.64 A2-A1 -13.13 M2 360.00 A3 28.26 A3-A2 -13.37 M3 240.00 A4 30.79 A4-A3 2.53 M4 1.00 A5 37.35 A4-A3 6.57 M5 0.50 A6 41.39 A4-A3 4.04 M6 0.02 A7 30.79 A4-A3 -10.61 M7 1.00 A8 37.35 A4-A3 6.57 M8 0.50 A9 41.39 A4-A3 4.04 M9 0.02 A10 39.17 A4-A3 -2.22 M10 0.50

M1+0

M1+M2 M2

M1+M2+.. M2+M3+… M3+M4+M… M4+M5+.. M5+M6 M6

M1+M2+.. M2+M3+… M3+M4+M… M4+M5+.. M5+M6+.. M6+M7+… M7+M8+.. M8+M9 M9

M1+M2+.. M2+M3+… M3+M4+M… M4+M5+.. M5+M6+.. M6+M7+… M7+M8+.. M8+M9+.. M9+M10 M10

0.02

360.02 360.00

601.54 601.52 241.52 1.52 0.52 0.02

603.06 603.04 243.04 3.04 2.04 1.54 1.52 0.52 0.02

603.56 603.54 243.54 3.54 2.54 2.04 2.02 1.02 0.52 0.50

0.52

6.26 6.26

10.32 10.32 4.57 0.98 0.81 0.52

10.35 10.35 4.59 1.11 1.02 0.98 0.98 0.81 0.52

10.35 10.35 4.59 1.15 1.06 1.02 1.02 0.94 0.81 0.81

Maximum Section size = Maximum section size + Random section size (0.0) = Uncorrected size = Ageing Factor (1.2) = PAGE 7 OF 7

1

28.48

TOTAL

28.48

1.00 1.00

342.85 -82.20

TOTAL

260.65

1.00 1.00 1.00 1.00 1.00 1.00

565.21 -135.52 -61.12 2.47 5.32 2.10

TOTAL

378.47

1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.42

566.86 -135.91 -61.39 2.80 6.70 3.96 -10.39 5.32 2.98

TOTAL

380.93

1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00

566.86 -135.91 -61.39 2.90 6.96 4.12 -10.82 6.17 3.27 -1.80

TOTAL

380.37

380.93 380.93 457.11

Ah Ah Ah

Including Spare Capacity (1.2) = Next Higher Standard Battery size available shall be selected.

PAGE 7 OF 7

548.54

Ah