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Gas TurbinesM701F Series

  • Standalone Gas Turbine Output

    380 MW class

  • Combined Cycle Output

    570 MW class / 1,130 MW class

  • Combined Cycle Efficiency

    62% or more

  • Attaining High Performance and High Operability

    Application of J-Series technologies

High-efficiency high-operability gas turbines for 50 Hz power generation
incorporating J-Series technologies

In 1991, MHPS developed the M501F Series gas turbines for 60 Hz power generation. In the following year, it developed the M701F Series for 50 Hz power generation as a series with similar design.

Since then, MHPS has continued to improve the design of F Series gas turbines. While introducing advanced elemental technologies and material technologies verified with the G Series with a proven track record, the F Series attains continuous performance enhancement.

Overall Design

The gas turbine unit is based on the basic structure adopted in the early 1970s that has accumulated a track record of at least 40 years. Its main features are as follows:

  • A compressor shaft end drive reduces the effect of thermal expansion on alignment
  • A rotor with simple single-shaft two-bearing support
  • A rotor structure has bolt-connected discs with the torque pins in the compressor section and CURVIC couplings in the turbine section to ensure stable torque transmission
  • An axial flow exhaust structure advantageous in combined cycle plant layouts
  • Horizontally split casings that facilitate field removal of the blades with the rotor in place

Compressor

Variable inlet guide vanes ensure operational stability at the start-up and enhanced performance at partial load in combined cycle operation.

Combustor

A premixing low NOx combustor is composed of one pilot burner and eight main burners that surround it. The compressor has an air bypass mechanism that enables fuel-air ratio regulation in the combustion region.

Turbine

Rotating Blades at the first two stages are free-standing, while those at the third and fourth stages are integral shroud blades.
Stationary vanes are supported by blade rings that are independent at individual stages to prevent turbine casings from being affected by thermal expansion.

Configuration

  M701F
Compressor Number of Stages 17
Combustor Number of Cans 20
Cooling Method Air Cooled
Turbine Number of Stages 4
Rotor Number of Rotors 1
Output Shaft Cold End
Rated Speed 3,000 rpm
Gas Turbine Approx. L × W × H 14.3 × 5.8 × 6.1 m
Approx. Weight 415 ton

Simple Cycle Performance

  M701F
Frequency 50 Hz
ISO Base Rating 385 MW
Efficiency 41.9 %LHV
LHV Heat Rate 8,592 kJ/kWh
8,144 Btu/kWh
Exhaust Flow 748 kg/s
1,650 lb/s
Exhaust Temperature 630 °C
1,167 °F
Exhaust Emission NOx 25 ppm @15%O2
CO 10 ppm @15%O2
Turn Down Load 45 %
Ramp Rate 38 MW/min
Starting Time 30 minutes

Combined Cycle Performance

  M701F
1 on 1 Plant Output 566 MW
Plant Efficiency 62.0 %LHV
2 on 1 Plant Output 1,135 MW
Plant Efficiency 62.2 %LHV
Starting Time 45 minutes

Performance Correction Curves

Effects of Compressor Inlet Temperature on Gas Turbine Performance (Typical)

Effects of Barometric Pressure on Gas Turbine Performance (Typical)

Typical Plant Layout - 1 on 1 configuration, single-shaft

  1. Gas Turbines
  2. Steam Turbines
  3. Generators
  4. Inlet Air Filter
  5. Heat Recovery Steam Generator (HRSG)
  6. Electrical / Control Package
  7. Main Transformer
  8. Condenser

Typical Plant Layout - 2 on 1 configuration

  1. Gas Turbines
  2. GT Generator
  3. Steam Turbines
  4. ST Generator
  5. Inlet Air Filter
  6. Heat Recovery Steam Generator (HRSG)
  7. Electrical / Control Package
  8. GT Main Transformer
  9. ST Main Transformer
  10. Condenser

Main Delivery Records

Shimar Power Plant, Azerenerji (Azerbaijan)
400 MW, 1 x M701F
Sendai Thermal Power Station Unit 4, Tohoku Electric Power Co., Inc. (Japan)
446 MW, 1 x M701F
Muara Karang Power Plant, PT. PLN (Indonesia)
700 MW, 2 x M701F
Nuon Magnum Power Plan, Nuon N.V. (The Netherlands)
1,300 MW, 3 x M701F

Recent Orders

  Number of units x Series Year of start of operation Plant specifications
Tanjung Priok Power Plant, PT. PLN (Indonesia) 2 × M701F 2018 Combined cycle
Bibiyana-III Power Plant, Bangladesh Power Development Board (BPDB) (Bangladesh) 1 × M701F 2018 Combined cycle
Sirajganj Power Plant, North-West Power Generation Company Limited (NWPGCL) (Bangladesh) 1 × M701F 2018 Combined cycle
Navoi 2 Power Plant, Uzbekenergo (Uzbekistan) 1 × M701F 2019 Combined cycle
Muara Karang Power Plant, PT. PLN (Indonesia) 1 × M701F 2019 Combined cycle
Lamma Power Station, The Hongkong Electric Company (HEC) (Hong Kong) 1 × M701F 2020 Combined cycle
Nakoso IGCC Power GK (Japan) 1 × M701F 2020 Integrated Coal Gasification Combined Cycle (IGCC)
Fukushima Natural Gas Power Plant, Fukushima Gas Power Co., Ltd. (Japan) 2 × M701F 2020 Combined cycle
Hirono IGCC Power GK (Japan) 1 × M701F 2021 Integrated Coal Gasification Combined Cycle (IGCC)

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