Rafha- Battery&Battery Charger 05.11.04 Cal
Short Description
Battery and Battery charger sizing...
Description
TCE CONSULTING ENGINEERS LIMITED SHEET i OF i
30421008-3CL00017-P0A
125V DC STATION BATTERY AND BATTERY CHARGER SIZING REPORT
SAUDI ELECTRICITY COMPANY EASTERN OPERATING AREA Dammam, Saudi Arabia GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
DESIGN BASIS FOR 125V DC STATION BATTERY & BATTERY CHARGER SIZING
DOCUMENT NO : 30421008-3CL-00017-P0A NOVEMBER 2004
ENGINEERING CONSULTANT TCE CONSULTING ENGINEERS LIMITED 73/1, ST.MARK'S ROAD BANGALORE 560001 INDIA
CONTRACTOR: AL-TOUKHI COMPANY FOR INDUSTRY & TRADING P.O.BOX 497, RIYADH 11411, KINGDOM OF SAUDI ARABIA TEL.00966-1-4633660 : FAX.00966-1-4631150
P0A 05.11.2004
MP
SR
REV NO. DATE
PREPARED BY
CHECKED BY
275176448.xls SECTION :cover sheeet
CLEARED BY
APPROVED BY
SHEET 1 OF 26
REV NO. DATE
275176448.xls SECTION :cover sheeet
PREPARED BY
CHECKED BY
CLEARED BY
APPROVED BY
SHEET 2 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT
DOCUMENT NO. 30421008-3CL-00017-P0A.
SIZING CALCULATION FOR STATION 125V DC SYSTEM
CONTENTS
SECTION
DESCRIPTION
1.0
PURPOSE
2.0
STANDARDS & REFERENCES
3.0
SIZING CRITERIA
4.0
BATTERY LOAD CYCLE.
5.0
CONSIDERATIONS
6.0
DETERMINATION OF NO. OF CELLS
7.0
CORRECTION FACTORS FOR BATTERY SIZING
8.0
DUTY CYCLE (LOAD PROFILE)
9.0
BATTERY AND CHARGER SIZING CALCULATIONS.
10.0
DC LOAD ESTIMATION
11.0
CONCLUSION
275176448.xls SECTION :Index
SHEET 3 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
275176448.xls SECTION :Index
SHEET 4 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00) CALCULATION DOCUMENT
DOCUMENT NO. 30421008-3CL-00017-P0A
1.0 PURPOSE: The purpose of this calculation is to determine the sizes of the 125V DC battery and battery charger for the Station DC System of GTG#1 and GTG#2 of RAFHA Central Power Station. 2.0 STANDARDS & REFERENCES 2.1
SCECO Engineering Standard SES-P-103.02 - Revision-3 : Storage Battery selection and capacity determination.
2.2
SCECO Engineering Standard SES-P-103.03 - Revision-3 : Battery Charger sizing.
2.3
IEEE-485 - IEEE Recommended Practice for Sizing of Large Lead Acid Storage Batteries for Generating stations and Sub Stations.
2.4
Key One Line Diagram for Rafha Plant Drawing No:KA-6667481,Rev-P0D SHEET 1 OF 1
3.0 SIZING CRITERIA 3.1
The battery has been sized to meet the Station DC loads, namely the switchgear control supplies and the Lighting load in the event of black out, for a period twelve (12) hours.The DC Loads pertaining to Gas turbine and Generator Auxiliaries are not considered as part of these calculation.Since these loads would be catered by unit DC system.
3.2
The Type of battery selected is Vented Type Lead Acid Battery as per cl no 3.03-26(a), page 42 of 331 of PTS-1024
3.3
The End cell voltage is considered as 1.75V as per SES-P-103.02.
3.4
Design marigin factor of 1.1 has been considered as per cl.no.4.4.2 of SES-P-103.02
3.5
Ageing factor of 1.25 has been considered as per cl.no.4.4.3 of SES-P-103.02
3.6
The Battery room temperature is considered as 25 deg C and the temperature correction factor of 1.19 based on inside room temperature of 10 Deg C in case of power failure is considered as per cl.no 2.2 of SES-P-103.02. Page 17 of 35
3.7
Capacity correction factors and Temperature correction factors are based on SCECO engineering standard SES-P-103.02.
275176448.xls SECTION :Writeup
SHEET 5 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00) CALCULATION DOCUMENT 4.0 4.0.1
DOCUMENT NO. 30421008-3CL-00017-P0A.
BATTERY LOAD CYCLE Prior to blackout the following plant configurations are considered: As a worst case,Incomer & Feeder Breakers of 33 kV switchgear,4.16kV Switchgear, Unit LV Switchgear and Station LV Switchgear are considered as closed. On loss of power in the plant, all the above referred circuit breakers will trip.This load is considered as 1 minute load at starting of duty cycle.
4.0.2
On return of normal power supply, simultaneous closing of one incomer & one outgoing feeder, tripping of one breaker if fault persists, starting of one spring charging motor and running of one spring charging motor are considered as per c.l.no.2.3(b) of SES-P-103.02. page no 18 of 35. This load is considered as 1 minute load prior to end of duty cycle.
4.0.3
Starting current of spring charging motor is taken as 5 times the normal current as per cl.no 2.4 SES-P103.02.
4.0.4
Continuous loads corresponding to remote control/annunciation panels, OLTC panels of Generator Transformer, Station Transformers,indications on switchgear for a period of 12 hours.
4.0.5
DC Emergency lighting load for 3 hours which will be switched on within 3 hours of power failure in accordance with cl.no. 2.6 of SES-P-103.03
5.0 5.1.1
CONSIDERATIONS The following types of indication lamps and transducers have been condsidered for the MV breakers (a) Indication Lamps for i) Breaker -ON ii) R phase -ON iii)Y phase -ON iv) B phase -ON v) Trip circuit healthy -ON
5.1.2
(b) Transducers for i) Voltage(V) Transducer ii) Ammeter(A) Transducer iii) Watt (W) Transducer iv) Power Factor(PF) Transducer v) VAR Transducer
The following type of Indication Lamps & Annunciations have been condsidered for Remote control/ Annunciation Panel. (a) Indication Lamps for i) Breaker -ON ii) R phase -ON iii)Y phase -ON iv) B phase -ON v) Trip circuit healthy -ON
275176448.xls SECTION :Notes for Sizing
(b) Annunciations for i) Transformer Winding Temperature high ii) Transformer Winding Temperature very high. iii)Transformer oil temperarue high iv) Transformer oil temperature very high v) Buchholz relay for transformer and OLTC vi) Pressure relief valve vii) DC supply supervision relay viii) Trip circuit supervision relay ix) O/C & E/F protection x) REF protection xi) Differential protection xii) Overall Differential protection xiii) Lockout relay xiv) Under Voltage Relay xv) AC trip coil healthy xvi) Motor Protection Relay
SHEET 6 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
275176448.xls SECTION :Notes for Sizing
SHEET 7 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00) CALCULATION DOCUMENT
6.0
DOCUMENT NO.30421008-3CL-00017-P0A
DETERMINATION OF NUMBER OF CELLS Nominal cell voltage
:
2 volts
Nominal battery voltage
:
125 volts
as per cl.no 2.0 of SES-P-103.02
Float voltage
:
2.2 volts
as per cl.no 2.0 of SES-P-103.02
End cell voltage
:
1.75 volts
Minimum permitted Voltage
:
101.5 volts
as per cl.no 2.0 of SES-P-103.02
Maximum Permitted Voltage
:
136.3 volts
as per cl.no 2.0 of SES-P-103.02
as per cl.no 4.1.2(d) of SES-P-103.02
Number of cells required considering the minimum system voltage and end cell voltage = 101.5/1.75
=
58.00
……..(i)
Number of cells required considering the maximum system voltage and float voltage = 136.3/2.2
=
61.95
……..(ii)
Number of cells chosen is lower of the above 2 values =
58.00
Maximum system voltage considering 58cells and float voltage of 2.2 volts is 58 * 2.2 = <
127.6 136.3
volts volts
Hence the maximum voltage developed during float charging is less than the maximum permissible system voltage. Hence, selection of 58 cells is justified. 7.0
CORRECTION FACTORS FOR BATTERY SIZING For arriving at the battery Amp-Hr. capacity, the following correction factors have been considered: a) Temperature derating factor, Tt (as per SES-P-103.02) b) Capacity Factor (KT) as per SES-P-103.02
275176448.xls SECTION :Cell Number
SHEET 8 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00) CALCULATION DOCUMENT 8.0
DOCUMENT NO30421008-3CL-00017-P0A
D U TY CYC LE ( D C L OAD PR O F I LE )
L O A D I N A5 A M P S
A1 A3
A4
A2 0
1
180
360
719
720
MINUTES SKETCH (Not to Scale)
NOTE: Refer CL.No: 10.0: DC Load Estimation for calculation of load currents A1 to A5
275176448.xls SECTION :DUTY CYCLE
SHEET 9 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
275176448.xls SECTION :DUTY CYCLE
SHEET 10 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00) DOCUMENT NO30421008-3CL-00017-P0A
CALCULATION DOCUMENT 9.0
BATTERY & CHARGER SIZING CALCULATION End Cell Voltage 1.75 volts Minimum Site Temperature : (-5) Deg. Cent. Battery Room Temp - 25 deg C 1
2
Period
Load
3 Change in Load
4
Battery Nominal Voltage: 125 V Total Duration: 720 Min. Load in Amps A1= A4= 5
Duration Of Period
Time End of Section
Nominal cell voltage = 2.0volts per cell A2= A5= 6
A3= 7
8
Capacity Temperatur Factor at t e Derating Min. rate ( KT) Factor for t Min.( Tt)
Reqd. Section Size)
Pos. Values Section 1: First Period Only - if A2 is greater than A1, go to Section 2 1 A1 A1= A1-0= M1=1
t=M1=1
0.7700
(3)*(6)*(7) = Rated Amp. Hrs.
Neg. Values
1.19
Section 1
0.19
0.00 AH
Section 2: First Two Periods Only- If A3 is greater than A2, go to Section 3 1 A1
A1=
A1-0=
M1= 1
t= M1 + M2 =180
3.7000
1.19
2 A2
A2=
A2-A1=
M2 = 179
t= M2 = 179
3.6800
1.19
Section 2
Sub. Total Total
0.00 0.00 AH
0.00
Sub. Total
0.00
0.00
Total
0.00 AH
Section 3 : First Three Periods Only - if A4 is greater than A3, go to Section 4 1 A1
A1=
A1-0=
M1 = 1
t= M1 + M2 + M3 = 360
6.2900
1.19
2 A2
A2=
A2-A1=
M2=179
t=M2 + M3 = 359
6.2700
1.19
3 A3
A3=
A3-A2=
M3=180
t = M3 = 180
3.7000
1.19
Section 3
275176448.xls SECTION :Battery&ChargerSizing
SHEET 11 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00) DOCUMENT NO30421008-3CL-00017-P0A
CALCULATION DOCUMENT Section 4 : First Four Periods Only - if A5 is greater than A4, go to Section 5 1 A1
A1=
A1-0=
M1 = 1
t= M1 + M2 + M3+M4 = 719
10.7400
1.19
2 A2
A2=
A2-A1=
M2=179
t=M2 + M3+M4 = 718
10.7200
1.19
3 A3
A3=
A3-A2=
M3=180
t = M3+M4 = 539
7.7100
1.19
4 A4
A4=
A4-A3=
M4=359
t = M4 = 359
6.2700
1.19
Section 4
Sub. Total
0.00
Total
0.00 AH
0.00
Section 5 : First Five Periods Only - if A6 is greater than A5, go to Section 6 1 A1
A1=
A1-0=
M1 = 1
t= M1 + M2 + M3 + M4+M5= 720
10.7600
1.19
2 A2
A2=
A2-A1=
M2=179
t= M2 + M3 + M4+M5= 719
10.7400
1.19
3 A3
A3=
A3-A2=
M3=180
t= M3 + M4+M5= 540
7.7300
1.19
3 A4
A4=
A4-A3=
M3=359
t= M4+M5= 360
6.2900
1.19
3 A5
A5=
A5-A4=
M3=1
t = M3 = 1
0.7700
1.19
Section 5 Uncorrected Cell Size = Maximum Section Size Design Margin = Aging Factor = Cell Size =
(Uncorrected Cell Size) * (Design Margin) * (Aging Factor)
Cell Size selected is
275176448.xls SECTION :Battery&ChargerSizing
Sub. Total
0.00
Total
0.00 AH
0.00
10% 1.25 AH
AH
SHEET 12 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00) DOCUMENT NO30421008-3CL-00017-P0A
CALCULATION DOCUMENT
Battery Charger rating BIF X AHR Battery charger rating =
SF X L +
RT
Where, SF
= Service Factor
L
= continuous DC load
BIF
= Battery Inefficiency Factor
=
1.1
=
1.1
AHR =
Ampere Hours removed from the battery
=
RT
Recharging time
=
=
275176448.xls SECTION :Battery&ChargerSizing
as per cl.no 2.0 of SES-P-103.03 of page 3 of 6
as per cl.no 2.0 of SES-P-103.03 AH
16
Hrs
as per cl.no 4.3 of SES-P-103.02
SHEET 13 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
Load Description
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
A. 1
33kV Switchgear Indication lamps
C
45
2
Protective Relays
C
9
3
Auxiliary relays
C
45
4
Transducers
C
45
5 6
Multifunction Meter Tripping coil
C M
9 20
7
Closing coil
M
4
One. incomer and one feeder breakers will be closed on return of normal power from each bus section.
8
Spring Charging Motor starting
M
2
One no. breaker spring will be charged on closing of breaker and the starting current is taken 5 times the normal current. From each bus section.
9
Spring Charging Motor running
M
2
One no of spring charge motor on running from each bus section.
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Unit Loads for Protective relays are assumed values. 5 nos of Aux Relays are considered for each breaker.
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Unit Loads for Protective relays are assumed values. 5 nos of Aux Relays are considered for each breaker. Transducers are considered for VX, AX, WX, PFX,VARX 10 nos of Breakers trip on loss of normal power and One no breaker will be tripped on restoration period from each bus section.
Sub Total Load : in Watts B. 1
4.16kV Switchgear Indication lamps
C
35
2
Protective Relays
C
7
3
Auxiliary relays
C
35
275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 14 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
Load Description
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts) Transducers are considered for VX, AX, WX, PFX,VARX
4
Transducers
C
35
5 6
Multifunction Meter Tripping coil
C M
7 14
7
Closing coil
M
4
One. incomer and one feeder breakers will be closed on return of normal power from each bus section
8
Spring Charging Motor staring
M
2
One no. breaker spring will be charged on closing of breaker and the starting current is taken 5 times the normal current from each bus section.
9
Spring Charging Motor running
M
2
One no of spring charge motor on running from each bus section.
Seven no. Breakers trip on loss of normal power and One no breaker will be tripped on restoration period from each bus section.
Sub Total Load : in Watts
275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 15 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
Load Description
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
C. 1
480V Station Switchgear Indication lamps
C
50
2
Protective Relays
C
10
3
Auxiliary relays
C
50
4
Transducers
C
50
5 6
Multifunction Meter Tripping coil
C M
10 10
7
Closing coil
M
4
8
Spring Charging Motor starting
M
2
9
Spring Charging Motor running
M
2
One no of spring charge motor on running
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Unit Loads for Protective relays are assumed values. 5 nos of Aux Relays are considered for each breaker. Transducers are considered for VX, AX, WX, PFX,VARX
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Unit Loads for Protective relays are assumed values. 5 nos of Aux Relays are considered for each breaker. Transducers are considered for VX, AX, WX, PFX,VARX 10 nos of incomer Breakers trip on loss of normal power and one no of breaker will be tripped on restoration period One. incomer breaker will be closed on return of normal power One no. breaker spring will be charged on closing of breaker and the satrting current is taken 5 times the normal current.
Sub Total Load : in Watts D. 1
480V Unit Switchgear-1 Indication lamps
C
15
2
Protective Relays
C
3
3
Auxiliary relays
C
15
4
Transducers
C
15
5
Multifunction Meter
C
3
275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 16 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
Load Description
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
6
Tripping coil
M
4
4 nos of Breakers trip on loss of normal power and one breaker will be tripped on restoration period
7
Closing coil
M
2
One. Incomer and one feeder breaker will be closed on return of normal power
8
Spring Charging Motor starting
M
1
One no. breaker spring will be charged on closing of breaker and the starting current is taken as 5 times the normal current.
9
Spring Charging Motor running
M
1
One no of spring charge motor on running
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Unit Loads for Protective relays are assumed values. 5 nos of Aux Relays are considered for each breaker. Transducers are considered for VX, AX, WX, PFX,VARX
Sub Total Load : in Watts E. 1
480V Unit Switchgear-2 Indication lamps
C
15
2
Protective Relays
C
3
3
Auxiliary relays
C
15
4
Transducers
C
15
5 6
Multifunction Meter Tripping coil
C M
3 4
7
Closing coil
M
2
One. Incomer and one feeder breaker will be closed on return of normal power
8
Spring Charging Motor starting
M
1
One no. breaker spring will be charged on closing of breaker and the starting current is taken as 5 times the normal current.
9
Spring Charging Motor running
M
1
One no of spring charge motor on running
275176448.xls SECTION :DC LOAD ESTIMATION
4 nos of Breakers trip on loss of normal power and one breaker will be tripped on restoration period
SHEET 17 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
Load Description
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
Sub Total Load : in Watts F. 1
480V Unit Switchgear(future) Indication lamps
C
15
2
Protective Relays
C
3
3
Auxiliary relays
C
15
4
Transducers
C
15
5 6
Multifunction Meter Tripping coil
C M
3 4
7
Closing coil
M
2
One. Incomer and one feeder breaker will be closed on return of normal power
8
Spring Charging Motor starting
M
1
One no. breaker spring will be charged on closing of breaker and the starting current is taken as 5 times the normal current.
9
Spring Charging Motor running
M
1
One no of spring charge motor on running
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Unit Loads for Protective relays are assumed values. 5 nos of Aux Relays are considered for each breaker. Transducers are considered for VX, AX, WX, PFX,VARX 4 nos of Breakers trip on loss of normal power and one breaker will be tripped on restoration period
Sub Total Load : in Watts G.
Relay Panel for Generator Transformer of GTG#1(SET-1 Protections)
1
Transformer Relay Panel
Sub Total Load : in Watts H
Relay Panel for Generator Transformer of GTG#1(SET-2 Protections)
275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 18 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
1
Load Description
Transformer Relay Panel
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
Sub Total Load : in Watts
I
Relay Panel for Generator Transformer of GTG#2 (SET-1 Protections)
1
Transformer Relay Panel
Sub Total Load : in Watts J
Relay Panel for Generator Transformer of GTG#2 (SET-2 Protections)
1
Transformer Relay Panel
K
Sub Total Load : in Watts Relay Panel for Generator Transformer of Future GTG(SET-1 Protections)
1
Transformer Relay Panel
Sub Total Load : in Watts L
Relay Panel for Generator Transformer of Future GTG(SET-2 Protections)
1
Transformer Relay Panel
Sub Total Load : in Watts
275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 19 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
Load Description
M
Relay Panel for Interbus Transformer T601(SET-1 & SET-2 Protections)
1
InterbusTransformer Relay Panel
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
Sub Total Load : in Watts N
Relay Panel for Interbus Transformer T602(SET-1 & SET-2 Protections)
1
InterbusTransformer Relay Panel
Sub Total Load : in Watts O
Relay Panel for Interbus Transformer T603(SET-1 & SET-2 Protections)
1
InterbusTransformer Relay Panel
Sub Total Load : in Watts P
Relay Panel for Interbus Transformer spare feeder (SET-1 & SET-2 Protections)
1
InterbusTransformer Relay Panel
Sub Total Load : in Watts Q
Relay Panel for Station Transformer T401(SET-1 & SET-2 Protections)
1
Station Transformer Relay Panel
275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 20 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
Load Description
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
Sub Total Load : in Watts R
Relay Panel for Station Transformer T402(SET-1 & SET-2 Protections)
1
Station Transformer Relay Panel
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for Relay panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for OLTC panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for OLTC panel unit loads
Sub Total Load : in Watts S
33kV switchgear Tie feeder Relay panel
1
33kV Switchgear Relay Panel
Sub Total Load : in Watts T 1
33kV switchgear Buscoupler feeder Relay panel 33kV Switchgear Relay Panel
Sub Total Load : in Watts U
OLTC Remote Tap Changer Panel for Genrator Transformer of GTG#1
1
Transformer OLTC Panel
Sub Total Load : in Watts
V
OLTC Remote Tap Changer Panel for Genrator Transformer of GTG#2
1
Transformer OLTC Panel
275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 21 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
Load Description
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
Sub Total Load : in Watts W
OLTC Remote Tap Changer Panel for Genrator Transformer of future GTG
1
Transformer OLTC Panel
C
1
Refer SES-P-103.02 page 20 of 35 for OLTC panel unit loads
Sub Total Load : in Watts
275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 22 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
Load Description
X
OLTC Remote Tap Changer Panel for Station Transformer-1
1
Transformer OLTC Panel
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
C
1
Refer SES-P-103.02 page 20 of 35 for OLTC panel unit loads
C
1
Refer SES-P-103.02 page 20 of 35 for OLTC panel unit loads
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Refer Cl.no. 5.1.3
Sub Total Load : in Watts Y
OLTC Remote Tap Changer Panel for Station Transformer-2
1
Transformer OLTC Panel
Sub Total Load : in Watts
Z
Remote Control & Annunciation PANEL for 33kV SWGR
1
Remote Controls
C
15
2
Annunciation
C
48
Sub Total Load : in Watts AA
Remote Control & Annunciation PANEL for 4.16kV SWGR
1
Remote Control
C
15
2
Annunciation
C
48
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Refer Cl.no. 5.1.3
Sub Total Load : in Watts 275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 23 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
BB
Load Description
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
Remote Control & Annunciation PANEL for 480V Station SWGR
1
Remote Control Indication lamps
C
15
2
Annunciation
C
48
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Refer Cl.no. 5.1.3
Sub Total Load : in Watts
CC
Remote Control & Annunciation PANEL for 480V Unit Switchgear-1
1
Remote Control Indication lamps
C
15
2
Annunciation
C
48
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Refer Cl.no. 5.1.3
Sub Total Load : in Watts DD
Remote Control & Annunciation PANEL for 480V Unit Switchgear-2
1
Remote Control Indication lamps
C
15
2
Annunciation
C
48
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Refer Cl.no. 5.1.3
Sub Total Load : in Watts
275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 24 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00)
CALCULATION DOCUMENT 10.0 DC LOAD ESTIMATION
SL. No.
EE
Load Description
DOCUMENT NO30421008-3CL-00017-P0A
A1 A2 Qty 0-1 minute 1-180 minute Type Unit of Load load load Load (Watts) (watts) (watts)
A3 A4 A5 180-360 360-719 719-720 minute load minute load minute (watts) (watts) load(watts)
Continuous Remarks Load on Charger (watts)
Remote Control & Annunciation PANEL for 480V Unit Switchgear future
1
Remote Control Indication lamps
C
15
2
Annunciation
C
48
Indication lamps considered for 1) Breaker- ON , 2) 'R' Phase-ON, 3) 'Y' Phase-ON, 4) 'B' Phase ON, 5)Trip Circuit Healthy-ON Refer Cl.no. 5.1.3
Sub Total Load : in Watts FF
DC Lighting Sub Total Load : in Watts
Lot
TOTAL LOAD IN WATTS TOTAL LOAD IN AMPS
275176448.xls SECTION :DC LOAD ESTIMATION
SHEET 25 OF 26
GENERATION EXPANSION OF RAFHA POWER PLANT (CONTRACT NO : 30421008/00) CALCULATION DOCUMENT
DOCUMENT NO. 30421008-3CL-00017-P0A.
11.0 CONCLUSION (a) Recommended minimum battery size for the station DC system of GTG#1 and GTG#2 including one future GTG of RAFHA Power station on 12 hours duration basis would be calculated as per the above procedure.
(b) A battery charger rating would be provided as per the above procedure.
275176448.xls SECTION :Conclusion
SHEET 26 OF 26
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