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Introduction

The turbine generator converts the energy of the steam produced in the steam generators into mechanical shaft power and then into electrical energy.
3D View of Turbine Generator example images
Introduction
Turbine
Number
1 double flow High Pressure (HP) turbine,
3 double flow Low Pressure (LP) turbine
Type of Turbine
Tandem-compound
Turbine Speed
1,800rpm
Output
1,455MWe
Last Stage Blade
52-inch LSB
Generator
Number
1
Type
Direct driven (conductor cooled)
Voltage
24kV, 3Phase
Frequency
60Hz

Specifications

Specifications
Description APR1400 OPR1000 Remarks
Rated output (MWe)
1,455
1,053
Increased 38.2%
Speed (RPM)
1,800
1,800
 
Configuration
TC-6F
TC-6F
 
Last Stage Bucket (inch/mm)
52/1320.8
43/1092.2
Increased 21%
Throttle pressure (kg/cm2)
67.6
72.8
 
Throttle temperature (deg C)
282.2
287.1
 
Throttle flow (Ton/hr)
7,785
5,493
 
Back pressure (inch)
1.5
1.5
 
No. of stages
7, 7, 7, 7
7, 7, 7, 7
 
Length of complete T/G (mm)
69,990
60,496
Increased 9.5m
Generator rating (MVA)
1,690
1,219.6
 
Power factor
0.9
0.9
 
Rated Voltage (kV)
24
22
 
Excitation system
EX-2100
EX-2100
 
Specifications
Thermal reactor output
4,000 MWth
Condenser pressure
38.1mmHg abs.
HP throttle pressure
67.6kg/cm2 abs.
No. of feed-water heaters
7
HP throttle temperature
282°C
Last stage bucket
1,321mm

High Pressure Turbine Design Features

  • Double flow, 7 stage design
  • Nozzle box inlet with AERO designed flow splitter
  • Largest nuclear HP IRD (1,600mm)
  • Increased energy in 1st stage (highest reaction level in a nuclear HP)
  • Complete mono-block rotor
  • Integral cover buckets
  • Multi-tooth tip spill seals

Low Pressure Turbine Design Features

  • 6 flows, 7 stage design
  • New Last Stage Bucket (LSB) design
  • Integral cover buckets
  • 3D aero steam path
  • Updated moisture removal features