KEPCO E&C is preparing to take a new leap forward in the Gimcheon new office building.

800MW

800MW Class USC Coal Fired Power Plant

800MW picture

KEPCO E&C has secured 800MW class high capacity highly efficient coal fired thermal power plant engineering technology from the A/E of Yeongheung Thermal Power Plant Units 1 & 2. This has opened a new chapter for high capacity, and environment-friendly power plants. 800MW class coal fired power plant has upgraded the maximum steam temperature from 538℃ of 500MW class standard coal fired power plants to 566℃ to increase heat efficiency by 2%. Starting from the design of the Yeongheung Thermal Power Plant Units 3 & 4, which are the follow-up models, reheating steam condition was upgraded to 593℃.

Furthermore, the top level new technology, such as highly efficient denitrification/desulfurization facilities, gas reheater with no leaks, and dry type super-low-temperature electrostatic precipitator.
We have applied the state-of-the-art environmental facilities to the design to emit sulfur oxides (SOx), nitrogen oxides (NOx) and dust much lower than the international environmental regulatory standards. The 800MW class Ultra Super-Critical Pressure coal fired engineering technology has been upgraded with the 1000MW class next generation coal fired thermal power plant engineering technology. Accordingly,

KEPCO E&C has secured the world’s top class competitiveness in high capacity, and clean coal fired thermal power. In the overseas market, we have successfully implemented technological support for the India’s TATA group’s 4,000MW Ultra Mega Power Project (UMPP, 800MW x 5).

Schematic Diagram of 800MW Class Coal Fired Power Plant

Schematic Diagram of 800MW Class Coal Fired  Power Plant

Major Design Features of Yeongheung Power Plant Units 1&2 and 3&4

Major Design Features of Yeongheung Power Plant Units 1 & 2 and 3 & 4
Category Units 1 & 2 Units 3 & 4

Power Capacity (MGR)

814MW X 2

886 MW X 2

Plant Efficiency

43.50%

43.54%

Vacuum Degree

38mmHga

38mmHga

Operation Mode

Base Load Operation (The Facilities are Equipped with Load Following Function for the Smooth System Operation)

Boiler

Type

Critical Pressure, Once Through, Single Reheating Type,
Balanced Draft

Critical Pressure, Once Through, Single Reheating Type,
Balanced Draft

Fuel Used

Bituminous Coal/Light Oil (When Starting Up)

Steam Condition

255kg/㎠g, 569℃/569℃

255kg/㎠g, 569℃/569℃

Efficiency

90.14%

90.14%

Turbine

Type

Tandem Compound, Single Glow HP, Double Flow IP & LP Turbine, Single Reheat, Regenerating and Condensing

Number of Rotations

3,600rpm

3,600rpm

Steam Condition

246kg/㎠g, 566℃/566℃

246kg/㎠g, 566℃/593℃

Efficiency

48.26%

48.42%

Generator

Cylindrical Rotor, Sealing Type, Hydrogen and Water Cooled, 3-Phase Synchronous

Main Transformer

Three(3) Single Phase, Two(2) Windings, FOA ee(3) Single Phase, Two(2) Windings, FOA

Main Control Unit

Distributed Digital Control (Integrated Control and Monitoring System)

Environmental Facility Engineering Standards

SOx

45ppm (6% O₂base)

25ppm (6% O₂base)

NOx

55ppm (6% O₂base)

15ppm (6% O₂base)

Dust

20㎎/s㎥ (6% O₂base)

5㎎/s㎥ (6% O₂base)

  • Category
    Power Capacity (MGR)
    Units 1&2
    814MW X 2
    Units 3&4
    886 MW X 2
  • Category
    Plant Efficiency
    Units 1&2
    43.50%
    Units 3&4
    43.54%
  • Category
    Vacuum Degree
    Units 1&2
    38mmHga
    Units 3&4
    38mmHga
  • Category
    Operation Mode
    Units 1&2
    Base Load Operation (The Facilities are Equipped with Load Following Function for the Smooth System Operation)
    Units 3&4
    Base Load Operation (The Facilities are Equipped with Load Following Function for the Smooth System Operation)
  • Category
    Boiler : Type
    Units 1&2
    Critical Pressure, Once Through, Single Reheating Type, Balanced Draft
    Units 3&4
    Critical Pressure, Once Through, Single Reheating Type, Balanced Draft
  • Category
    Boiler : Fuel Used
    Units 1&2
    Bituminous Coal/Light Oil (When Starting Up)
    Units 3&4
    Bituminous Coal/Light Oil (When Starting Up)
  • Category
    Boiler : Steam Condition
    Units 1&2
    255kg/㎠g, 569℃/569℃
    Units 3&4
    255kg/㎠g, 569℃/569℃
  • Category
    Boiler : Efficiency
    Units 1&2
    90.14%
    Units 3&4
    90.14%
  • Category
    Turbine : Type
    Units 1&2
    Tandem Compound, Single Glow HP, Double Flow IP & LP Turbine, Single Reheat, Regenerating and Condensing
    Units 3&4
    Tandem Compound, Single Glow HP, Double Flow IP & LP Turbine, Single Reheat, Regenerating and Condensing
  • Category
    Turbine : Number of Rotations
    Units 1&2
    3,600rpm
    Units 3&4
    3,600rpm
  • Category
    Turbine : Steam Condition
    Units 1&2
    246kg/㎠g, 566℃/566℃
    Units 3&4
    246kg/㎠g, 566℃/593℃
  • Category
    Turbine : Efficiency
    Units 1&2
    48.26%
    Units 3&4
    48.42%
  • Category
    Generator
    Units 1&2
    Cylindrical Rotor, Sealing Type, Hydrogen and Water Cooled, 3-Phase Synchronous
    Units 3&4
    Cylindrical Rotor, Sealing Type, Hydrogen and Water Cooled, 3-Phase Synchronous
  • Category
    Main Transformer
    Units 1&2
    Three(3) Single Phase, Two(2) Windings, FOA ee(3) Single Phase, Two(2) Windings, FOA
    Units 3&4
    Three(3) Single Phase, Two(2) Windings, FOA ee(3) Single Phase, Two(2) Windings, FOA
  • Category
    Main Control Unit
    Units 1&2
    Distributed Digital Control (Integrated Control and Monitoring System)
    Units 3&4
    Distributed Digital Control (Integrated Control and Monitoring System)
  • Category
    Environmental Facility Engineering Standards : SOx
    Units 1&2
    45ppm (6% O₂base)
    Units 3&4
    25ppm (6% O₂base)
  • Category
    Environmental Facility Engineering Standards : NOx
    Units 1&2
    55ppm (6% O₂base)
    Units 3&4
    15ppm (6% O₂base)
  • Category
    Environmental Facility Engineering Standards : Dust
    Units 1&2
    20㎎/s㎥ (6% O₂base)
    Units 3&4
    5㎎/s㎥ (6% O₂base)

The Characteristics of Yeongheung Thermal Power Plants

  • Drag Chain Conveyor and Fly-ash Refining Facility is applied to Ash Treatment Equipment: all the fly-ash generated during the plant operation can be recycled.
  • Dehydrated Reaction Byproducts (Plaster) generated from Desulfurization Facilities: dehydrate to 10% or less moisture content, and sell all of them as cement additives or raw ingredients for plaster boards.
  • Waste Water: treat with physicochemical method and electrodialysis method and then recycling it as water for desulfurization facilities, so there is no waste water discharging to outside of the plant.