M701F Series
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Standalone Gas Turbine Output
380 MW class
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Combined Cycle Output
570 MW class / 1,130 MW class
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Combined Cycle Efficiency
62% or more
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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, Mitsubishi Power 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, Mitsubishi Power 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
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Effects of Compressor Inlet Temperature on Gas Turbine Performance (Typical)
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Effects of Barometric Pressure on Gas Turbine Performance (Typical)
Typical Plant Layout - 1 on 1 configuration, single-shaft
- Gas Turbines
- Steam Turbines
- Generators
- Inlet Air Filter
- Heat Recovery Steam Generator (HRSG)
- Electrical / Control Package
- Main Transformer
- Condenser
Typical Plant Layout - 2 on 1 configuration
- Gas Turbines
- GT Generator
- Steam Turbines
- ST Generator
- Inlet Air Filter
- Heat Recovery Steam Generator (HRSG)
- Electrical / Control Package
- GT Main Transformer
- ST Main Transformer
- 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) |