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  • Entire Electrical Balance of Plant supplied by ABB
  • Large Power Transformers (2*130MVA and 1*140 MVA)
  • Unit and Aux Power Transformers
  • Medium Voltage system
  • Low voltage system

  • Mechanical draft cooling towers are used in this power plant.
  • Cooling Towers : 2
  • Each one has 4 cells & 4 cooling fans.
  • Drift Eliminator: Drift eliminators are designed to capture large water droplets caught in the cooling tower air stream.

THANK YOU!

  • Transformers of the plant

Main Power Transformers

  • Brand - ABB
  • 14.5KV Step-up to 220KV
  • Primary Winding Delta
  • Secondary winding Star
  • Vector Group - YNd11

  • Steam Turbine
  • Sea water intake system

Presentation Outline

  • Capacity: 1400 m3/h
  • 400m away from the shore.
  • Filtration & pumping of sea water from 1km distance from the plant
  • Addition of chlorine

SC5 Impulse type Dual Pressure ST by GE, USA

  • Impulse/Reaction Type
  • Two Pressure Stages with Extraction-100bar & 7 bar
  • Speed of 3000rpm
  • 100MW Power Output
  • Consists with 20 stages

15 HP Stages

5 LP Stages

  • HP Steam Admission : 1st stage
  • LP Steam Admission : 16th stage
  • HP steam

Pressure 90 bar

500 Celsius

  • LP steam

Pressure 7 bar

230 Celsius

Major Equipments

Flow Process of the power plant

  • Plant description
  • Electrical System
  • Plant Process
  • Major Equipments
  • Transformers of plant
  • Seawater intake
  • Cooling tower
  • Gas Turbine – 2

Electrical System

  • HFO with Sulfur content less than 2 % is used
  • Fuel Supply & delivery by CPC
  • Initially by trucks & from December 2010 though pipe line from CPC Muthurajawela Terminals
  • Cheapest CCPP
  • Generation Voltage 14.5 kV,
  • Transmission Voltage: 220kV
  • Process Water & Service Water: Desalinated sea water is used
  • Cooling Medium: Sea Water
  • Net Efficiency : 46.13%

General Electrics (GE) of France and USA, 9E model

  • Model Series : 9001E
  • Ambient Temperature : 30 C
  • Fuel Temperature : 125 C
  • Output : 100 MW
  • Exhaust Flow : 1450.1*103 kg/hr
  • Exhaust Temperature : 520 C
  • Consists with 20 stages.

17 stages for Compressor

3 stages for Turbine

  • Function : Combust liquid fuel & mix with air. Then rotate the shaft of the generator to generate electricity.

  • Cooling Tower

Plant Description

Medium Voltage Transformers

  • 02 Nos.
  • 13.5 MVA
  • 14.5KV Step down to 6KV
  • 02 Nos. 6KV Bus bars (BBA & BBB)
  • Heat Recovery Steam Generator (HRSG)
  • Supplied by NEM Netherland – 2

Low Voltage Transformers

  • 3.5MVA rated transformers
  • and 2.5MVA rated transformers
  • 6kV step down to 400V

  • Type : Water tube Boiler
  • Stack : Diameter 5m, & Height 80m
  • 5 heat exchanger bundles & LP and HP drums
  • Generates 510C & 100 bar HP steam and 230C & 7 bar LP steam
  • HP Drum- Capacity-23m3
  • LP Drum-Capacity-57 m3

  • Open Cycle 11th Nov. 2008 and Combined Cycle 10th May 2010
  • 300 MW of Power
  • 2 GTs, 2 HRSGs, and 1 ST
  • 100 MW*2 + 100 MW = 300MW
  • Multi-fuel capability (Tri-fuel machine)
  • Main fuel: HFO (Heavy Fuel Oil),
  • Alternate Fuels: Auto Diesel (LFO) and LNG (Liquefied Natural Gas)
  • First Heavy Fuel Oil operated Combined Cycle Power Plant in Sri Lanka

YUGADANAVI COMBINED CYCLE POWER PLANT

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