Poso Booklet ENG 3 Apr Print

8/17/2019 Poso Booklet ENG 3 Apr Print

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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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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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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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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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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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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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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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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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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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Weir & Intake

Headpond

Project Gallery


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Headpond & Penstock

Penstock

Penstock


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Stator Generator

Rotor


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Generator

Control Room

Panel Room

Monitoring Unit


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Intake

Transmission from Poso to Palopo (209 KM)


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Construction


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Documents

Poso Booklet ENG 3 Apr Print