interconeksi.ppt
TRANSCRIPT
WASTE TO ENERGY IN POMsINTERCONNECTION
TO GRID PLN
BY DIDIK NOTOSUDJONO RESERCHER BPP.TEKNOLOGILECTURER FT.UNIV.PAKUAN
WASTE TO ENERGY IN POMsINTERCONNECTION
• The mill has an installed capacity of 2 x 45 tons FFB/hour
• The mill processes FFB at an average of 1200 tons/day
• Operates for 300 days a year • The total annual FFB volume of about
360,000 tons • The POM generates EFB at an average of
22% FFB • incinerates about 70% of the EFB• The mill produces fibers of about 8% of FFB
from which 70% of it is sent into boiler • Shells of about 6.5% FFB are used as fuel
for the boiler • The POM uses about 20,000 liters of diesel
purchased at industrial rate • A 600 kVA generating set is supplemented
for electricity generation. • Total electricity required for mill operation
and domestic use is in the range 1300 to 1400 kWe.
TECHNICAL APPROPRIATENESS
• It is estimated that approximately 10-30% of electric energy generated from the POM can be exported to PLN
• The power generation unit is 1x1000 kWe and 1x 1850kWe
• The POM has a 1x20 tons/hr, 21 bar.g Vickers Hoskins boiler and a 1x45 tons/hr, 21 bar.g
• The total monthly diesel consumption of the POM is 20,000 liters and the power generated by its turbine is about 1850 kWe. The POM itself and the housing estate near the POM require average power of 1400 kWe.
BASIC DESIGN • An interconnection system
to PLN will include step up transformers 0.4/20kV
• The transformer would be sized to cater for the black start requirement of at least 650kVA
• All the interconnection equipment can be procured locally
• The interconnection capacity designed specifically to import power to displace the diesel black start is higher than the normal export potential from the POM to the PLN 20kV grid
• The basic design assumptions for the low voltage interconnection system
ELECTRICITY EXPORT TO PLN Energy Potential for Energy saving
Energy Potential for Energy Saving
Capacity Turbine 1000 Kwe
Installed 1000 kWe
Units 1
Power Factor 1
Normally for factory 800 kWe
Export to electricity 200 kWe
Operation
Days 288 days
hours 20 hours
Annual 5760 hours
Monthly electricity production 30000 kWh
Diesel consumption 10000 l/mo
Annual 360000 USD
Diesel avoided Cost Diesel cost USD/l 0.6 USD
Avoided cost 72000 USD
Operational for Electricity Export 1800 hour
Price of electricity to PLN 0.04 USD
Total Energy sold 792,000.00 kWh
Total Income from energy sales 31680 USD
ELECTRICITY EXPORT TO PLN
Capacity Turbine 1600 Kwe
Installed 1800 kWe
Units 1
Power Factor 1
Normally for factory 800 kWe
For Housing 200 kWe
Export to electricity 600 kWe
Operation
Days 300 days
hours 20 h
Annual 6000 hours
Monthly electricity production 60000 kWh
Diesel consumption 20000 l/mo
Annual 720000 kWh
Diesel avoided Cost Diesel cost USD/l 0.545
Avoided cost 130800 USD
Operational for Electricity Export 1200 h
Price of electricity to PLN 0.04
Total Energy sold 2,880,000.00 kWh
Total Income from energy sales 115200 USD
Investment of Electrical Interconnection
Equipment
No Equipment Unit Price (US $)
Total (US $)
1 Transformator merck Unindo 750 kVA 0.4/20KV 1 28300 28300
2Cubicle inc SM6 + LB 5. 630 A + Earthing switch & Interlocking switch
1 4800 4800
3 Cubicle out going SM 6 – Qm + Fuse 32 A 1 7500 7500
4Cubicle metering with (Amp meter .Volt meter .kWh meter)
1 4700 4700
5 Cable for low Voltage NYFGBY
3x (4 x 240 mm).per meter US $ 226/m 500 226 113000
6Cable 20 kV for N2XSEBY 2x(3x240mm) per meter US $ 253
50 253 12650
7 Cable 20 kV 3x35 mm per meter US $ 34 10 34 340
8 Capacitor Bank 400kVAR 67500 67500
9 Synchronizer with Protection and Circuit Breaker 31000 31000
Total 269790
Sensitivity Analysis of Interconnection System
Export of electricity to PLN (kWe) 600 400 300 250 200 125
IRR (%) 83 65 56 51 46 39
Payback (years) 1.20 1.52 1.76 1.91 2.09 2.42
Sensitivity Analysis for Interconnection
system
0
10
20
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1 2 3 4 5 6
IRR (%)
Payback (years)
SINGLE LINE DIAGRAM INTERCONECTION TO GRID PLNOUT GOING CUBICLE
OUT GOING CUBICLE
THANK YOU
EFBEFB FiberFiber ShellShell