Industrial battery sizing calculation sheet with all formulas and proceduresFull description
This can be referred
Battery and Charger Sizing Calculation IEEE 485Full description
Full description
Battery, Sizing, Calculation
Battery Sizing. MS Excell Format.Full description
Full description
FOR BATTERY SIZINGFull description
To Size the required ampere hour capacity of the battery and current rating of battery charger in large substations.Full description
Full description
UPS Sizing calculation for Design Electrical EngineersFull description
UPS sizing calculationFull description
power plantFull description
Full description
This document describes the steps to follow to size a UPS battery, considerations to take and quick calculations to make. These notes are aimed to sales personnel.Full description
Design basis consideration for Battery sizing a document by TCE.Full description
Trafo calc.Full description
Cable sizingFull description
Motor Sizing CalculationFull description
Full description
Cable sizingFull description
091135-PVG-EC-004
CALCULATION
PAGE: COVER
TITLE : UPS SYSTEM CALCULATION
PROJECT NAME
: LPG REFRIGERATED STORAGE
CLIENT
: PETROVIETNAM GAS CORPORATION
DEC PROJECT NO. : 090366
REV. NO.
REV. NO.
DATE PREPARATION DEPT.
DESCRIPTION
PREPARATION
PREP'N
REVIEW
REVIEW
DEC APPROVAL
DEC
PVGAS
APPROVAL APPROVAL PVGAS APPROVAL
NGOC N.T A
PVE-EL 30 Oct 2010
This document is the property of Daewoo Engineering Company. Therefore, it shall not be released to any third party without permission of authorized person of Daewoo Engineering Company.
LPG REFRIGERATED STORAGE PROJECT
091135-PVG-EC-004
CALCULATION
PAGE: 2 of 7
CONTENTS
1 PURPOSE............................................................................................................3 2 STANDARDS AND CODES..............................................................................3 2.1. Standard and code.......................................................................................3 2.2. Calculation condition...................................................................................3 2.3. Calculation data...........................................................................................3 2.4. Abbreviations..............................................................................................3 3 CALCULATION.................................................................................................4 3.1. Calculation due to normal loads (P0)..........................................................4 3.2. UPS capacity selected (P) ...........................................................................4 3.3. Capacity of Battery (AH/4HR)....................................................................4
PVC-DEC CONSORTIUM
LPG REFRIGERATED STORAGE PROJECT
091135-PVG-EC-004
CALCULATION
1
PAGE: 3 of 7
PURPOSE This calculation is provided to determine the rating of the UPS to supply the critical loads for electrical system for the LPG REFRIGERATED STORAGE PROJECT at BA RIA – VUNG TAU, VIETNAM.
2
STANDARDS AND CODES
2.1.
Standard and code
2.2.
-
IEEE 485 - 1997, Recommended Practice for Sizing Lead-Acid Batteries for Stationary Applications
-
IEC60896: Stationary lead-acid batteries.
-
Other relevant standards.
Calculation condition Input & Output of UPS shall be as follows.
2.3.
-
AC input
: 3 ph, 4 wires, 50 Hz, 400 VAC
-
DC Input
: supplied from Batteries with Back-up time: 4 hour
-
AC output
: 1 ph, 3 wires (2 + E), 50 Hz, 110 VAC
Calculation data UPS loads, Refer to the following documents:
2.4.
-
Appendix 1 “Instrument loads Estimation”
-
Attachment - UPS load analysis
Abbreviations UPS
Uninterruptable Power Supply
AC
Alternative Current
DC
Direct Current
VAC
Voltage of Alternative Current
kVA
Kilo-Volt-Ampere
PVC-DEC CONSORTIUM
LPG REFRIGERATED STORAGE PROJECT
091135-PVG-EC-004
CALCULATION
3
CALCULATION
3.1.
Calculation due to normal loads (P0)
PAGE: 4 of 7
UPS capacity P ≥ P0 Normal loads: -
P0 = 15.09 kVA
-
Q0 = 9.35 kVAr
(Refer to “Attachment - UPS load Analysis”, this value considered to the efficiency of loads.) 3.2.
UPS capacity selected (P) Current wave height is higher than normal wave height because of the harmonic currents generated by rectifier loads Therefore: Design contingency Capacity allowance of 10 % is considered. UPS Capacity -
P = 15.09 kW x 1.1 = 16.6 kW
-
Q = 9.35kVAr x 1.1 = 10.29kVAr
-
S = 19.53kVA
From the above calculation, 20 kVA of UPS would be selected 3.3.
Capacity of Battery (AH/4HR) Capacity of Battery Bank required: C = Idc x K x L Where: -
Idc: Discharge current of Battery bank in ( A ) I DC [A] = 1.2 x (S [kVA] x 1000) / UDC [V] S: Load demand in KVA (S = 20 kVA) PVC-DEC CONSORTIUM
LPG REFRIGERATED STORAGE PROJECT
091135-PVG-EC-004
CALCULATION
PAGE: 5 of 7
UDC: Average discharge voltage of battery bank in (V) UDC = 0.86 x Ubat = 0.86 x 110 = 95 V DC Value 1.2 expressed 20% margin IDC= 1.2 x (20 x 1000) / 95 = 252.6 A -
K: Battery back-up time required (HR), (4 HR )
-
L: Aging factor, ( 1.25 ) C = 252.6 x 4 x 1.25 = 1263 AH / 4HR
Capacity of Battery bank shall be 1263 AH / 4 HR
PVC-DEC CONSORTIUM
LPG REFRIGERATED STORAGE PROJECT
091135-PVG-EC-004
CALCULATION
Service Description
Rated voltage V
High voltage switchgear (Control circuit No.1) High voltage switchgear (Control circuit No.2) Low voltage switchboard (Control circuit No.1) Low voltage switchboard (Control circuit No.2) GCB Lighting Panel for Flare - DCS -F&G - Operation - Printers (2 units) - Telecommunication system - Paging system - LAN network - CCTV system - Tank gauging Control Panel 1 (Computer). - Tank gauging Control Panel 2 (Computer). - Flow computer control panel No.1 - Flow computer control panel No.2 - Analyser TOTAL LOAD
