poso booklet eng 3 apr print
TRANSCRIPT
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POSO HYDROPOWER PLANT 1
Indonesia is world’s fifth most populated country at 240 million people
and eleventh biggest by area. It comprises over 1,000 races speaking over
700 languages, spawning across 5,000 km of 13,800 islands. It is the world’s
20th largest economy. Indonesia expanded 6.17 percent in the third quarterof 2012 over the same quarter of the previous year.
The country’s power needs are insatiable, and unfortunately, scarcely fulfilled.
Its power consumption remain the lowest in the region at 65% electrification,
and an even lower 30% for its eastern half, with only the state-owned PLN
constructing power plants until recent years. To alleviate it, the government
has launched two accelerated programs of producing new power capacity
of 10,000 MW each. It also stated its commitment towards renewable
energy when 60% of the second 10,000 MW program comes from hydro
and geothermal energy.
The hydro power industry in Indonesia is still in its infancy. Of the estimated
potential of 70,000 MW, a mere 3,648 MW has been constructed and
operational, constituting only 15% of the nation’s electricity supply. However,
it recently received much boost from the government, amongst them
a presidential decree No. 31 Year 2009. It states that PLN is obliged to
purchase renewable energy of < 10 MW at a fixed price of 7,7 US cents/
kWh in Java and 9,2 US cents/kWh outside Java. Power purchases for big
hydropower plants are individually negotiated, although it also enjoys very
good rates of not much less than the mini hydropower plants. Noting that
in tropical countries water is available throughout the year, this makes hydro
power in Indonesia an extremely enticing prospect.
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2 POSO HYDROPOWER PLANT
Indonesia’s insateiable appetite or electricity spurs strong growth in the development of power
plants. Amongst its biggest power potentials is hydro power, of which an estimate of 75,000 MWH
of potentials, only about 7,000 MW have been built. With recent focus in renewable and clean
energy, coupled with favourable regulations, hydroelectric business in Indonesia is experiencing anunprecented growth.
The Poso lake is indonesia’s third largest lake, stretching 32 km in length and 16 km in width. Its depth
reaches up to 510 meter. At average elevation of 501 meter above sea level, its surface area covers
32,000 hectares. Its water is crystal clear, with no trace no sulphur, and negligible sediments; a result
of having a water catchment area of almost all virgin jungle. With an average discharge of 148 m3 per
second, its energy potential is enormous. PT Poso Energy, among its portfolio, owns 3 hydropower
concessions in the river totalling 600 MW, of which the first plant of 195 MW has been constructed andis now operasional. Throughout Indonesia, Kalla Group owns a total portfolio of over 1,500 MW.
The Poso Hydroelectric complex is part of Hadji Kalla Group’s vision and commitment to provide
the infrastructure that will hopefully become the driver of economic growth in Sulawesi and Eastern
Indonesia.
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POSO HYDROPOWER PLANT 3
Location
Danau Poso
Average surface area of the lake : 360.000.000 m2Minimum water level : EL+508.00 m
Flood water level : EL+511.00 m
Average discharge through Poso River : 125.80 m3/s
Note: Lake Poso have only one outlet of
Poso River
Palu
Ujung Pandang
Manado
Poso
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4 POSO HYDROPOWER PLANT
Poso Hydropower Scheme
RiverWeir and Intake
Full supply level
+452.00m
Weir regulating gate
3 units slide gate
8m x 8m
Length of spilway
47m
Intake gate
4 Units slide gate
8m x 3m
Waterway Headpond Penstock
Type
Open Channel
Full supply level
+452.00 m
Size
44m width
18,4m depth
Type
Exposed
Unit x Diameter
3 x 3.6m
Discharge/unit
150m3/sec
Size
350 m length
40m width
6m depth
Length of spilway
47m
Length
1000 m
Material
Steel JIS SS400 SS490
Weir and Intake Headpond
Waterway Penstock
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POSO HYDROPOWER PLANT 5
Powerhouse
Turbine
3 Units
Pamona 275/150 KV
Tailrace
Type
Open Channel
Dimension Size
(LxWxH) : 170 m x 30 m x
5.35 m
Substation
Transmission
275 KV
Length
208 KM
Construction
Steel Tower
Unit
538 towers
Powerhouse Substation
Tailrace Transmission
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6 POSO HYDROPOWER PLANT
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POSO HYDROPOWER PLANT 7
The Plant
Installed Capacity
Discharge Of The Plant
Elevation
Annual Energy
Head
Number of Units : 3
Installed Capacity : 3 x 65 MW
Nominal Rated Capacity : 3 x 65 MW
Rated discharge : 147.15 (3x49.05) (m3/sec)
Centre Line of Spiral Case Level : EL+290.500 m
Tail Water level :
• Level for all turbines : EL+294. 000 m
• Flood Water Level : EL+300.000 m
Average Total Annual Energy : 1243 GWh
Exclusive Committed Energy : 845.52 GWh
Max. Gross Head : 158 m
Min. Gross Head : 146 m
Rated Net Head : 150 m
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8 POSO HYDROPOWER PLANT
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POSO HYDROPOWER PLANT 9
Turbine Specification
Turbine type
D1 of Runner
Design Rated Head
Rated Output
Maximum Output
Rated Speed
Runaway speed
Efficiency at rated output under rated net head
Maximum efficiency
Rated discharge
Suction Head
: Francis
: 3200mm
: 150m
: 66.66MW
: 73.33MW
: 250rpm
: 488 rpm
: 92.7%
: 93.34%
: 49.03 m3/s
: - 3.5m
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12 POSO HYDROPOWER PLANT
Governor Specification
Type
Working pressure
Dia. Of Main distribution valve
: Hydraulic redundant Proportional valve with Redundant PLC
Electronic Controller
: 6.3Mpa
: 80mm
GOVERNOR
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POSO HYDROPOWER PLANT 13
Exitation & Avr Specification
Specially design for the generator with output capacity up to 72MW, 11kV, rated current at 3790,7A
Rated excitation voltage
Rated excitation current
Initial excitation voltage
Initial excitation current
Excitation capacity
: 216V
: 1011A
: 10V
: 30A
: 250KVA
EXITATION & AVR SPECIFICATION
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POSO HYDROPOWER PLANT 15
Step Up Main Transformer Specification
Number Units
Type
Frequency
Capacity (continuous rating)
Rated Voltage Phases Three
Tap changing
Power frequency withstand volt-
age
Secondary neutral
: 3
: Oil immersed, Outdoor Used, three phase separate tank.
: Hz 50
: KVA 80,000
a. Primary : KV 11
b. Secondary : KV 275
a. Type : off-load tap change
b. Tap voltage range : R - KV 302.5-288.75-275 -261.25-247.5
c. Number of tap position : 5
a. Primary (LV) : KV 28
b. Secondary (HV) : KV 504
c. Secondary neutral : KV 38
a. Primary (LV) : KV 75
b. Secondary (HV) : KV 1192
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16 POSO HYDROPOWER PLANT
Weir & Intake
Headpond
Project Gallery
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POSO HYDROPOWER PLANT 17
Headpond & Penstock
Penstock
Penstock
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Stator Generator
Rotor
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POSO HYDROPOWER PLANT 19
Generator
Control Room
Panel Room
Monitoring Unit
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Intake
Transmission from Poso to Palopo (209 KM)
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POSO HYDROPOWER PLANT 21
Construction
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POSO HYDROPOWER PLANT 23
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