ups sizing presentation (uninterruptible power supply)
DESCRIPTION
This is the easy way to know about UPS Sizing.TRANSCRIPT
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UPS SIZING
OLEH:
BAGUS PRAHORO TRISTANTIO
ELECTRICAL DIVISION
INDUSTRIAL PLANT DEPARTMENT
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TUJUAN
Memilih komponen yang sesuai dengan
ratingnya. Adapun komponen yang akan
digunakan adalah rectifier, battery banks, dan
inverter.
Menjamin ketersediaan daya baik untuk
beban-beban sensitive maupun beban-beban
kritis.
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UPS
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BATTERY CHARGER
Dropper diode
Battery bank
Rectifier
(Charger)
Input
Switching
device
Dist.
board
Blocking diode
Output
Switching
device
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Apa saja yang dibutuhkan?
UPS loads that need to be supported
Input / Output AC voltage
Autonomy time(s) Battery type
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Langkah-langkah Sizing
Mengumpulkan beban-beban yang akan
disupply oleh UPS system
Membuat load profile dan menentukan
kapasitas dari UPS system
Menentukan kapasitas baterai yang akan
digunakan
Menentukan kapasitas inverter, rectifier, dan
static switch.
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LANGKAH 1
Menentukan beban beban yang akan disupply.Beban-beban yang akan disupply biasanyamerupakan beban instrument dan control.
1. Instrumen dan control yang meliputi DCS,ESD, F&D, dan H2S Syatem
2. Telecom and communication system
3. PLC Package
4. Control and monitoring facilities sepertiSCADA, PMS dan lain sebagainya.
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LANGKAH 2
Menentukan load profile dengan
mengutamakan design load dan juga design
energy yang akan digunakan.
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LANGKAH 3
Battery sizing dilakukan dengan langkah-
langkah sebagai berikut :
1. Menentukan DC output dari battery
2. Menentukan DC input voltage dari inverter
3. Menentukan jumlah cell yang akan
digunakan4. Menentukan DC link current
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Rumus-rumus umum
Mengacu pada IEEE std 485 (1997 rev2003)
dan IEEE std 1115 (2000 rev2005)
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RUMUS JUMLAH CELL
Nmaxis the maximum number of battery cells
Nminis the minimum number of battery cells
Vdcis the nominal battery / DC link voltage (Vdc)
Vi,maxis the inverter maximum input voltage tolerance (%)Vi,minis the inverter minimum input voltage tolerance (%)
Vfis the nominal cell float (or boost) voltage (Vdc)
Veodis the cell end of discharge voltage (Vdc)
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Kapasitas Baterai
is the minimum battery capacity (Ah)
is the design energy over the autonomy time (VAh)
is the nominal battery voltage (Vdc)
is a battery ageing factor (%)is a temperature correction factor (%)
is a capacity rating factor (%)
is the maximum depth of discharge (%)
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CORRECTION FACTOR
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Rectifier Sizing
DC load current
IL,dcis the design DC load current(full load) (A)
Sis the selected UPS rating (kVA)
Vdcis the nominal battery / DC linkvoltage (Vdc)
Maximum battery charger
Icis the maximum DC charge current (A)
Cis the selected battery capacity (Ah)
klis the battery recharge efficiency / lossfactor (typically 1.1) (pu)
tcis the minimum battery recharge time(hours)
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Inverter Sizing
Three Phase
ILis the design AC load current (full
load) (A)
Sis the selected UPS rating (kVA)
Vois the nominal output voltage (line-
to-line voltage for a three phase UPS)
(Vac)
Single Phase