1.2 power plant module2 batch3
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EDC POWER PLANT FACILITIES
EDC Geothermal Power Plant Projects
Leyte
Total = 1,199 MW
Ormoc /Kananga. Leyte
EDC Owned• 125 MW Upper Mahiao• 232.5 MW Malitbog• 180 MW Mahanagdong• 50.9 MW Optimization
NPC- Owned (with SSA)• 112.5 MW Tongonan I
Albay and Sorsogon
EDC-Owned• 110 MW Bacman I• 40 MW Bacman II
Valencia, Negros Oriental
EDC-Owned• 112.5 MW Palinpinon I• 80 MW Palinpinon II
Kidapawan, Cotabato
BOT• 52 MW Mindanao 1• 54 MW Mindanao 2
Bago City, Negros Occidental
EDC- Owned• 49.4 MW Northern Negros
ED
C P
LAN
TS
200 MW cap
100 MW cap
100 MW cap
100 MW100 MW
NEGROS
Cap (MW) 185
Demand (H) 184
Surplus 1
C360 MWC360 MW
C85 MWC85 MW LEYTE-SAMAR
Cap (MW) 561
Demand 160
Surplus 401
CEBU
Cap (MW) 151
Demand (H) 402
Deficit (251)
THE VISAYAS GRID (2008 PEAK)
PANAY
Cap (MW) 93
Demand (H) 122
Deficit (29)
BOHOL
Cap (MW) 6
Demand 42.3
Deficit (36.3)C90 MWC90 MW
C50 MWC50 MW
NNGPFNNGPF
SNGPFSNGPF
LGPFLGPF
440 MW SubmarineCable to Luzon
200 MW
The power plant has a combined gross capacity of 131.86 MW and designed to operate at base load conditions. It comprises four GCCUs (Geothermal Combined Cycle Unit) with 31.8 MW capacity each and one brine Ormat Energy Converter (OEC) binary unit with 4.6 MW capacity. Each GCCU consists of one 20.3 MW GE non-condensing steam turbine that exhausts to three OEC binary cycle turbines with a rated capacity of 3.8 MW each.
Brief Description
Upper Mahiao Geothermal Power Plant
UMPP STG Bottoming OECs Brine OEC
MW net 118.5 4 units 12 units 1 unit
Steam Pressure ksca 11 11Steam Flow Rate TPH 1019 254.75 1267 TPH BrineCapacity MW 20.6 MW x 1 2.5 MW x 2 3 MW x 2
TypeReaction, Noncondensing Axial Impulse Axial Impulse
Capacity MVA 28.07 MVA x 1 5.625 MVA x 1 6.875 MVA x 1Voltage kV 13.8 13.8 13.8Type GE Kato KatoNo. of cells 3 x 9 21Type Crossflow. Induced draftVacuum ksca 8.43 8.43CapacityType
Kananga, Leyte
Jun-96
Turbine
Generator
Air Cooled Condensers
Gas Extraction
Power Station
Facilities
UnitLocationContracted CapacityCommisioned Date
Technical Description
Upper Mahiao Geothermal Power Plant
Process Diagram - UMPP
Single Flash Binary Cycle
Brief Description
Malitbog Geothermal Power Plant
The power plant has a combined gross capacity of 232.5 MW and designed to operate at base load conditions. It consists of three 77.5 MW Fuji conventional steam turbines with direct contact condensers and uses high pressure steam (10 kg/cm2) for power generation.
Technical Description
Malitbog Geothermal Power Plant Malitbog Main Malitbog Bottoming
MW net 216 13.35July-96 December-97
Steam Pressure ksca 11.0 5.96Steam Flow Rate TPH 1585.29 109.08Capacity MW 77.5 MW x 3 14.56 MW x 1
TypeReaction, Double flow, Condensing
Impulse, Condensing
Capacity MVA 94.1 MVA x 3 20 MVA x 1Voltage kV 13.8 13.8TypeNo. of cells 3 x 8 3TypeVacuum mmHg abs 88.9 74.98Type Direct contact Surface typeCapacity 3x50% SJE 1 x 100% SJEType Three stage Two stage
UnitLocationContracted CapacityCommisioned Date
Gas Extraction
Power Station
FacilitiesSynchonous, brushless, PMG exciter
Counterflow. Induced draftCooling Tower
Condenser
Kananga, Leyte
Turbine
Generator
Process Diagram - MBPP
Double Flash – Conventional with Bottoming Cycle
Brief Description
Mahanagdong A & B Geothermal Power Plant
These base load power plants have a combined gross capacity of 180 MW consisting of three 60 MW Toshiba conventional steam turbines with shell-and-tube type condensers and uses low pressure steam (5 kg/cm2) for power generation.
SITE A
SITE B
Technical Description
Mahanagdong A & B Geothermal Power Plant Mahanagdong Main Mahanagdong Topping
MW netvaries fr 164.77 to 152.88
6.225 MW x 2 + 6.25 MW x 1
July-97 September-97Steam Pressure ksca 5.9 10.96Steam Flow Rate TPH 1506.173 1227.6Capacity MW 60 MW x 3 3.175 MW x 2 x 3
TypeImpulse-reaction, Double flow, Condensing Impulse, Backpressure
Capacity MVA 77.7 MVA x 3 8.24 MVA x 3Voltage kV 13.8 13.8TypeNo. of cells 7 cells x 2, 8 cells x1
TypeCounterflow. Induced draft
Vacuum mmHg abs 65Type Shell and tube
Capacity 5 x 20% SJE, Hybrid Type Two stage SJE, hybrid
Ormoc City, Leyte
Turbine
Generator
Gas Extraction
Power Station
FacilitiesSynchonous, brushless, PMG exciter
Cooling Tower
Condenser
UnitLocation
Contracted CapacityCommisioned Date
Process Diagram - MGAPP
Double Flash – Conventional with Topping Cycle
Process Diagram - MGBPP
Single Flash – Conventional with Topping Cycle
Brief Description
Leyte Optimization Power Plants
The Leyte Optimization Power Plant consists of three topping cycle plants (Mahanagdong A & B and Tongonan 1) and one bottoming cycle plant (Malitbog). The topping plants consist of OEC non-condensing steam turbines that produce power while reducing the steam high pressure to the conditions required by the main plants. The bottoming plant consists of a GE conventional steam turbine and condensing cycle unit that uses low pressure steam from the “second flash” of Malitbog brine for power generation.
BOTTOMING PLANT
TOPPING PLANT
Technical Description
Leyte Optimization Power PlantsTongonan - I Topping
Mahanagdong Topping
Malitbog Bottoming
Kananga, Leyte Ormoc City, Leyte Kananga, Leyte
MW net 5.65 MW x 36.225 MW x 2 + 6.25 MW x 1 13.35
September-97 September-97 December-97Steam Pressure ksca 11.32 10.96 5.96Steam Flow Rate TPH 1008 1227.6 109.08Capacity MW 2.875 MW x 2 x 3 3.175 MW x 2 x 3 14.56 MW x 1
TypeImpulse, Backpressure
Impulse, Backpressure
Impulse, Condensing
Capacity MVA 7.7 MVA x 3 8.24 MVA x 3 20 MVA x 1Voltage kV 13.8 13.8 13.8TypeNo. of cells 3
TypeCounterflow, Induced draft
Vacuum mmHg abs 74.98Type Surface typeCapacity 1 x 100% SJEType Two stage
Synchonous, brushless
UnitLocation
Contracted CapacityCommisioned Date
Power Station
FacilitiesCooling Tower
Condenser
Turbine
Generator
Gas Extraction
Process Diagram – Leyte Optimization
TURBINE-GENERATOR
CONDENSER
COOLING TOWER
TURBINE-GENERATOR
CONDENSER
COOLING TOWER
ROCK MUFFLER
ROCK MUFFLER
BRINE LINE
BRINE LINE
STEAM LINE
BOTTOMING CYCLE AND MAIN PLANT CONFIGURATION
PRODUCTION WELL
2 PH. LINE
RE-INJECTION WELL
RE-INJECTION WELL
FLASH VESSEL
MAIN PLANT
BOTTOMING PLANT
SEPARATOR VESSEL
Process Diagram – Leyte Optimization
STEAM LINE
BRINE LINE
PRODUCTION WELL
2 PH. LINE
FLASH VESSEL
TURBINE-GENERATORROCK MUFFLER
TURBINE-GENERATOR
CONDENSER
COOLING TOWER
TOPPING PLANT
RE-INJECTION WELL
SEPARATOR VESSEL
BRINE LINE
SPCV
TOPPING CYCLE AND MAIN PLANT CONFIGURATION
MAIN PLANT
The Mindanao I and II Geothermal Plant, a plant with dual-flow, impulse reaction, condensing turbine, a wet cooling tower, and the latter being a double-flash and with a net generation of 47MW and 48.25MW, respectively. High pressure and low pressure steam are used. Both utilizes Mitsubishi turbine.
Brief Description
Mindanao Geothermal Power Plant
Technical Description
Mindanao Geothermal Power Plant M1GPP M2GPP
MW net 47 48.25March-97 June-99
Hectares 2 1.8Steam Pressure ksca 7.0 7.0/3.31Steam Flow Rate TPH 385 343/47.4Capacity MW 52.3 50.93
Single Pressure Dual Pressure
Capacity MVA 67.8 67.8Voltage kV 13.8 13.8TypeNo. of cells 5 5TypeVacuum mmHg abs 71.4 73.492Type
Capacity2x50% SJE, 1x100% LRVP
1x60%/1x40% SJE, 1x100% LRVP
Type
Kidapawan, North Cotabato
Impulse-Reaction, Double flow, Condensing
Turbine
Generator
Land Area
Gas ExtractionTwo stage steam jet ejector, 3rd stage
vacuum pump
Power Station Facilities
Synchonous, brushless, PMG exciter
Type
Counterflow. Induced draftCooling Tower
Spray type, direct contactCondenser
UnitLocationContracted CapacityCommisioned Date
Brief Description
Northern Negros Geothermal Power Plant The power plant is located at the western flank of Canlaon Volcano in the island of Negros Occidental. It is a conventional geothermal power generating plant, which utilizes both the high pressure and low pressure geothermal steam for power generation. The plant has a Gross Capacity of 49.33 MW. It exports the generated power from the 138 KV switchyard , via the 138 KV cross-country Transmission Line and TransCo Bacolod Substation, and finally into the TransCo power system and PNOC-EDC customers.
Technical Description
Net Capacity : 43.77 MW (High Pressure Steam + Low Pressure Steam) High Pressure Steam Flow: 94.4 kg/s
Interface Pressure: 5.0 kg/cm2gNon-Condensable Gases: 4.0 % w/w
Brine Flow : 178 kg/s
Gross Capacity : 49.37 MW (High Pressure Steam + Low Pressure Steam)
Brine Supply
Brine Pressure: 5.3 kg/cm2gBrine Inlet Temperature: 160 deg. C
Guaranteed Net Plant Steam Rate (100% Load)1st – 2nd year = 2.133 kg/MW-s3rd – 5th year = 2.144 kg/MW-s
(Expected amount of flashed steam if above conditions are met: 13.88 kg/s)
Return Condensate: Flow=20 kg/s; pH=4.5-7.5
Northern Negros Geothermal Power Plant
Process Diagram - NNGP
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• Palinpinon Geothermal Power plant I (Pal-I) located at Barrio Puhagan, Valencia, Negros Oriental is approximately twenty one (21) kms. south-west of Dumaguete city. The plant covers an area of 2.7 hectares at an elevation of 696 meters above sea level.
• Pal-I can generate a total of 112.5 MW from three (3) 37.5 MW turbine generator units. All equipment was supplied by Fuji Electric Co. as a full turnkey project. Commercial operation started in June, July and September, 1983 for units 1,2 and 3 respectively.
• Palinpinon Geothermal Power plant II (Pal II) is composed of three (3) modular plants, Nasuji, Okoy-5 and Sogongon. The modular plants were constructed in response to the increasing demand of the Cebu-Negros-Panay grid. The total capacity is 80 MW from four units. Commercial operation of Nasuji and Okoy-5 started in January 31,1994 and December 22, 1994 respectively. Sogongon units 1 and 2 started commercial operation in February 18, 1995 and April 5, 1995 respectively.
Technical Description
Palinpinon Geothermal Power Plant
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• The Tongonan Geothermal Power Plant (later renamed Leyte Geothermal Power Plant – I by NPC) started commercial operation in July, 1983. It has 3 turbine-generator units with a total installed capacity of 112.5 MW. Electricity produced is mainly supplied to the provinces of Leyte and Samar. The largest costumer is the Leyte Industrial Complex in Isabel.
Technical Description
Tongonan Geothermal Power Plant
27
• Bac-Man I Power Plant utilizes geothermal energy from wells drilled in the geothermal fields of Manito, Albay and the city of Sorsogon. The plant consists of two (2) 55 MW units installed on a single power station. Units 1 and 2 were synchronized to the Luzon Grid on September 10, 1993 and December 12, 1993, respectively.
• Bac-Man II is composed of two (2) Units (20 MW per unit) modular generating power plant designed to utilize geothermal steam supplied by EDC from wells drilled in Bacon-Manito Geothermal Field. The Cawayan Plant (Unit 3) and the Botong Plant (Unit 4) started operation in March 15, 1994 and April 27, 1998, respectively.
Technical Description
BacMan Geothermal Power Plant
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Performance MetricsSteam rate = Main+Auxiliary Steam
Plant Gross OutputAvailability factor = Period Hours – (SOH+FOH) * 100%
Period Hours
Reliability factor = 1 - FOH _
(Period Hours – (FOH+SOH))Capacity factor = Actual Generation ___ *
100%
(Gross Capacity * Period Hours)
SOH = Scheduled Outage Hours
FOH = Forced Outage Hours
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VARIOUS ENERGY CONVERSION SYSTEMS: Temperatures in the range of 85 to 170°C are the values at which the binary system can be designed to operate through the selection of appropriate working fluid.
Summary of Energy conversion systems.
GEOFLUID TEMP. °C
ENERGY CONVERSION SYSTEM
WORKING FLUID
COOLING SYSTEM
100 Basic binary R134a Evaporative condenser
150 Advanced Binary Isobutane Air
200 Binary or Single Flash
Isobutane or steam
Air or water
Source: Impact of Enhanced Geothermal Systems (EGS) on the United States in the 21st Century
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EXAM III
• A 75MW geothermal power plant receives 600 TPH of steam at full load. For the past year, the plant has undergone 24-day PMS and incurred an outage of 10 hours for the first half and 4.5 hours for the second half of the year. Considering that the plant has delivered 550,000,000 kWh of energy, compute for the steam rate (kg/s / MW) at full load, reliability, and availability and capacity factors. Assume that there are 365 days in a year.
End of PresentationThank You!