Category: Mitsubishi Power

Overview

In response to the need for modern monitoring and control systems in thermal power plants, the

Net IR-S infrared flame detector combines the proven IR-S type flame detector, which has been successfully installed in many power plants, with Mitsubishi Electric’s DIASYS Netmation control system.

The result is a flame detector product that can be used as a burner control system.

The Net IR-S has the same sensor unit as the conventional IR-S sensor and can be used with any of the following fuels: fuel oil, coal and natural gas.

In addition, the excellent detection reliability, maintainability and cost effectiveness of the IR-S sensor are maintained.

In addition, the decision circuitry is built as a module of DIASYS Netmation. It is used in conjunction with the upper layers of the Netmation to provide an easy-to-use interface.

The panel of the Net IR-S can be designed as a stand-alone flame detector system independent of the burner control system.

If you replace a conventional flame detector with this new flame detector, you can reuse your existing equipment.

Features

Highly sensitive design

High sensitivity to flame intensity enables stable detection of burner flames. Flames are detected through unlit areas.

Extended detection range

With 100 times the dynamic range of conventional products, this sensor enables stable detection of flames from slow burning to high intensity. No sensitivity adjustment of the sensor is required in the field.

Maintenance-free

A ball lens is used to eliminate the need to clean the sensor www.ge-drive.com window during normal boiler operation.

Long Life Sensor

No periodic replacement is required due to the use of long-life infrared semiconductor sensor elements.

Reduced number of panels

The detector unit is compact and utilizes a space-saving design that allows one panel to contain 40 corners.

Reuse of existing boiler facilities

The boiler itself does not need to be worked on when the flame detector is replaced.

Reuse of cables

There is no need to replace the cable between the sensor and the panel. (When UV type detection is used in an existing system)

System Configuration

Flame detector panel

OVERVIEW

The IR-S type infrared flame detector is an excellent high sensitivity type that excels in “detection reliability”, “maintainability” and “economy”.

It supports boiler fuel diversity and low NOx (nitrogen oxide) operation.

By detecting the “average value” and “variation” of the infrared intensity of the burner flame light transmitted to the infrared sensor (semiconductor element) via a light guide (optical fiber), the detector can distinguish between the flame and the light due to the furnace.

The detector distinguishes between flame and infrared light due to the red heat of the furnace wall and detects flame fluctuations in the burner’s ignition zone.

The IR-S type infrared flame detector has low brightness flame detection sensitivity and a www.ge-drive.com wide dynamic range, so it can be used for a variety of fuels such as natural gas, heavy oil, and coal.

Features

High sensitivity design

High sensitivity to flame intensity enables stable detection of burner flames. Flame is detected through unlit areas.

Extended detection range

With 100 times the dynamic range of conventional products, this sensor enables stable detection of flames from slow burning to high intensity. No sensitivity adjustment of the sensor is required in the field.

Easy Maintenance

A spherical lens is used to eliminate the need to clean the sensor window during normal boiler operation.

Long Life Sensor

No periodic replacement is required due to the use of long-life infrared semiconductor sensor elements.

Fewer panels

The detector unit is compact and features a space-saving design that allows one panel to cover up to 40 corners.

System Configuration

Flame Detector Panel

Flame detector main unit

For oil burners

The following examples apply to oil burners

Product Details

Mitsubishi PLC RJ71C24-R4 is a Mitsubishi iQ-R series network module (serial communication module) with 2-channel RS-422/485 interface.

RJ71C24-R4 Network Module (Serial Communication Module)

Product Details

【Interface

CH1:RS-422/485 standard (two-piece plug-in terminal block) CH2:RS-422/485 www.ge-drive.com standard (two-piece plug-in terminal block)

Communication mode

Line: full-duplex communication/half-duplex communication

mc protocol communication: half-duplex communication

Communication protocol communication: full-duplex communication/half-duplex communication

Non-sequential protocol communication: Full-duplex communication/half-duplex communication

Bidirectional protocol communication: full-duplex communication/half-duplex communication

Synchronization mode] Step synchronization mode

Transmission speed] 1200/2400/4800/9600/14400/19200/28800/38400/57600/115200/230400(bps)

[Data Format

Start bit:1

Data bit:7/8

Parity Pay:1(Vertical Parity)/None

◆Stop bit:1/2

[Access cycle

MC protocol communication: 1 request is processed during END processing of the CPU module of the C24 installation station.

Communication protocol communication:While sending and receiving. When a request is executed by a dedicated instruction (CPRTCL instruction).

Non-sequential/bidirectional protocol communication: Each request for transmission is executed at the time of transmission, and reception can be performed at any time.

[Connection line configuration (target device side: CPU module side)].

RS-422/485: 1:1. 1:n, n:1. m:n

[Data communication line configuration (target device side: CPU module side)]]

RS-422/485.

-MC protocol communication: 1:1. 1:n, m:n

Communication protocol communication: 1:1. n:1

Unordered protocol:1:1. 1:n, n:1

Bidirectional protocol communication: 1:1

Transmission distance (total long distance)] RS-422/485: Max. 1200m

Number of input/output points]: 32 points (I/0 allocation: intelligent 32 points)

External wiring connector] 9-pin D-sub (male) bolt-on type

DC5V internal current consumption] 0.42A

Dimensions H*W*D[mm]] 106*27.8*110Weight] 0.13kg

Independent gas turbine output

110 MW class

Combined cycle output

170 MW class/340 MW class/510 MW class

Fuel Diversity

Blast furnace gas (BFG) compatible

Gas turbine for 60 Hz power generation compatible with fuel diversity

In 1984. a 1.090 MW heat recovery combined cycle power plant powered by six 701D gas turbines began commercial operation.

This was the dawn of the current era of combined cycle power generation. the DA Series incorporates F-Class technology into the D Series to improve overall performance.

Features

Integral Design

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

Compressor shaft end drive reduces the effect of thermal expansion on alignment

Rotor with simple single-shaft double bearing support

Rotor construction with bolted discs, torque pins in the compressor section and CURVIC couplings in the turbine section to ensure stable torque transmission

Axial flow exhaust structure for advantages in combined cycle plant layouts

Horizontally split housing for on-site removal of the blades with the rotor in place

Compressors

The DA series utilizes high-efficiency compressors with a proven track record. The fixed vanes of the backstage are supported by vane rings to minimize tip clearance of the rotating vanes.

Variable inlet guide vanes ensure operational stability at start-up and enhance performance under partial loads in combined cycle operation.

Combustion chamber

Mitsubishi Power introduced the world’s first commercially available dry low NOx combustor to the D-Series gas turbine in 1984.

The premixed low NOx combustor consists of a pilot burner and eight main burners surrounding it. The combustion chamber has an air bypass mechanism to adjust the fuel-air ratio in the combustion zone.

Turbine

In response to the increase in turbine inlet temperature, the fixed blades of the first three stages and the rotor blades of the first two stages are air-cooled.

The rotor blades of the fourth www.ge-drive.com stage are equipped with Z-shaped shrouds to enhance the vibration strength of the blades.

The fixed blades are supported by blade rings that are independent of each stage to protect the turbine housing from thermal expansion.

OVERVIEW

The H-100 series units are the world’s largest twin-shaft gas turbines, based on extensive experience in manufacturing gas turbines and the achievements of the H-25 and H-15 series developments.

They achieve high efficiency as part of a combined cycle power plant with heat recovery boilers, cogeneration systems or other combined cycle power plants.

The H-100 series has a simple cycle gas turbine output of 105 MW to 116 MW and a combined cycle output range of 150 MW to 350 MW.

As twin-shaft gas turbines, they are suitable for mechanical drive applications.

Features

Heavy-duty design: Heavy-duty and highly reliable construction designed with ease of maintenance and long-term continuous operation in mind.

High efficiency: high performance in various power generation cycles (simple, combined and cogeneration)

Packaging type: easy to carry and install

The range is suitable not only for power generation but also for mechanical drives.

The world’s largest high-efficiency twin-shaft gas turbine

The H-100 series of gas turbines has been developed for utility and industrial customers in the 50 Hz and 60 Hz regions. The first unit went into commercial operation in 2010.

Mitsubishi Power then continued its efforts to improve the design of the H-100 series gas turbine.

While utilizing advanced elemental technologies and www.ge-drive.com material technologies proven in the H-series gas turbines, we continue to strive for improved performance.

H-100 Gas Turbine

Standalone Gas Turbine Output

100-120 MW class

Combined cycle output

150-170 MW / 300-350 MW class

Stand-alone gas turbine

Fast start-up within 10 minutes

Suitable for power generation and mechanical drive applications

Replacing worn gas turbines with H-100 Series gas turbines reduces nitrogen oxide (NOx) and carbon dioxide (CO2) emissions and lowers fuel consumption while improving plant efficiency.

Gas turbine replacement paves the way to fully utilize existing plant equipment, and it is applicable not only to simple cycle plants but also to combined cycle plants.

Example of replacement of an existing combined cycle system

Existing major equipment can be reused

Generator

Heat Recovery Steam Generator (HRSG)

Turbine

Electrical equipment

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Independent gas turbine output

40 MW class

Combined cycle output

60 MW / 120 MW class

Cogeneration efficiency

80% or more

High reliability

Over 6.3 million hours of total accumulated operating time

Highly Reliable Gas Turbines for Industrial Customers

The H-25 series gas turbine was developed www.ge-drive.com for utility and industrial customers in the 50 Hz and 60 Hz regions.

Its first unit went into commercial operation in 1988.

Mitsubishi Power then continued its efforts to improve the design of the H-25 series gas turbine.

While utilizing advanced elemental technologies and material technologies proven in the H-series gas turbines, we continue to strive for improved performance.

Replacing steam power plants with H-25 gas turbine cogeneration plants

Mitsubishi Power’s H-25 gas turbine is part of the decarbonization solution.

Replacing steam power plants with H-25 gas turbine cogeneration plants has the potential to reduce CO2 emissions and energy consumption.

OVERVIEW

The H-25 series gas turbines are a heavy-duty type with extensive experience in manufacturing gas engines that realize high efficiency.

They achieve high efficiency through heat recovery steam generators, cogeneration systems, or combined cycle power plants.

The H-25 series has a simple cycle gas turbine output of 41 MW and a combined cycle output of approximately 60 MW in a 1-to-1 configuration and approximately 120 MW in a 120-to-1 configuration.

They provide up to approximately 70 metric tons of steam per hour when used in cogeneration applications.

Features

Heavy-duty construction: Highly reliable construction with ease of maintenance and long hours of continuous operation in mind

High Efficiency: High performance in a variety of power generation cycles (simple, combined, and cogeneration)

Fuel flexibility: natural gas, waste gas, light oil, kerosene, bioethanol, etc.

Package type: easy to transport and install

Package design

The H-25 Series package design offers the following advantages:

Minimizes field installation effort and time

Flexible layout

Short lead times

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Mitsubishi Power’s gas turbines utilize many key cutting-edge technologies.

The gas turbine is the core component of a gas turbine combined cycle (GTCC) power plant. Mitsubishi Power has been working on the development of gas turbines for many years

Mitsubishi Power has been working on gas turbine development for many years and has integrated the latest aerodynamic, cooling design and material technologies to create a wide range of products that realize high efficiency and reliability.

Our state-of-the-art J-series gas turbine is a world leader in capacity and efficiency, with an inlet temperature of 1.600°C. The J-series gas turbine is the world’s most powerful and efficient gas turbine.

A comprehensive effort from development to manufacturing

Gas Turbines

Mitsubishi Dynamics is the only company in Japan that handles the entire production process from development, design, manufacturing, construction and commissioning to after-sales service using its own technology.

For thermal power plants that require advanced technology and reliability, we utilize our comprehensive www.ge-drive.com strengths to play an important role.

Research, Development and Design

Technology development and design based on world-leading technologies

Development of the latest design and analysis tools

New product development

Design using in-house technologies

Manufacturing

Manufacturing of high quality products

Manufacturing of major components in our own factories

Turbine blades and vanes

Combustion chambers

Rotors

Gutters, etc.

Validation

Overall validation prior to application in a real facility

One of the world’s largest turbine test facilities

A combined cycle power plant is installed at Mitsubishi Power’s own plant and is in verification operation as a practical facility.

History of Mitsubishi Power Gas Turbines

Mitsubishi Power has a wide range of gas turbines to meet the requirements of customers around the world.

The gas turbines utilize our own low NOx technology and comply with stringent environmental regulations.

To date, we have delivered more than 1.600 gas turbine power generation systems.

The equipment delivered has an excellent operational record and high reliability, resulting in satisfied and highly rated customers.

Mitsubishi Power designs and delivers highly efficient and environmentally friendly power generation facilities, including boilers, steam turbines, generators, air quality control systems, and other auxiliaries.

A steam power plant consists of a boiler, steam turbine and generator, and other auxiliaries. The boiler generates steam at high pressure and high temperature. The steam turbine converts the heat energy of steam into mechanical energy. The generator then converts the mechanical energy into electric power.

Our highly efficient and environmental friendly power plants will contribute to the stable supply of electrical power and reduction of environmental impact.

Large Capacity Power Plants

Applying ultra-supercritical pressure technology for highly efficient power generation

Our highly efficient and environmentally friendly power plants have an impressive track record in field of supercritical and ultra-supercritical pressure power plants and high level of trust in the market. We will contribute to the stable supply of electric power and to the reduction of environmental impact all around the world, based on our advanced technologies.

What is ultra-supercritical pressure?

Under normal atmospheric pressure [0.101 MPa], water boils at 100ºC. As pressure increases, the boiling temperature of water also increases. When the pressure is increased to 22.12 MPa, and at a temperature of 374ºC, water does not boil but is directly converted into steam. This is called the critical point, and the pressure above this critical point is called supercritical pressure. Supercritical pressure with a temperature equal to or more than 593ºC is called ultra-supercritical pressure.

Co-generation Plants

Paving the way for effective use of energy

Co-generation plant is a power plant to supply both electric power and heat (in most cases steam). Co-generation plants are applied as effective solution for industrial purpose power plants to factories. Utilization of surplus energy from the factory as fuel for the boiler will further enhance effective use of the available energy. Industrial purpose power plants are also functional as distributed generations. We will contribute to optimization of energy usage and to the reduction of environmental impact, based on our advanced technologies.

Engineering, Procurement and Construction (EPC) Services

Supplying power plants matching customers’ needs

We are not merely a manufacturer that designs and manufactures the equipment and devices required for thermal power plants. We also provide EPC services, including plant construction.Power plants are consisted by Main plant equipment, such as boilers, steam turbines and generators, and miscellaneous auxiliary equipment. Since we are capable both on main equipment supplier and EPC, we are capable to optimize design condition for boilers, steam turbines and generators,based on the required electrical power and heat output. One strength lies in our engagement in design, manufacturing and construction of optimal plants in an integrated manner to ensure requirement of customer, suitability to location, with the maximized performance of the major equipment.

World-class Power Generation Efficiency

At Least 64% (LHV)

Wide Output Range

30 to 1332 MW Class

Combined Cycle Power Plants

On Grid Facility for Verification Testing

CO2 Emissions Compared with Those of Conventional Coal-fired Thermal Power Generation

About 50% Lower

High efficiency energy through combined cycle power generation

Gas turbine combined cycle (GTCC) power plants use natural gas to deliver the cleanest and highest efficiency power generation.

Plants employing state-of-the-art gas turbines of Mitsubishi Power have a 20% higher power generation efficiency than conventional coal-fired thermal power generation systems and the world’s highest level of efficiency of more than 64%. That enables CO2 emissions an approximate 50% reduction.

What is GTCC?

In the power generation method characterized by the standalone operation of a gas turbine, known as the simple or open cycle, releases exhaust gas at temperatures of around 600℃ into the atmosphere.

Combined cycle power generation improves the general thermal efficiency of the plant by recovering this high temperature exhaust gas. Many combined cycle power generation plants adopt a waste heat recovery cycle in which exhaust gas from the gas turbine is led to the waste heat recovery boiler to generate steam using recovered heat to drive the steam turbine.

Advantages and Features that Make the GTCC the Mainstream for New Thermal Power Generation Facilities

High level of thermal efficiency

In comparison with thermal efficiency of about 40% in steam power generation, combined cycle power generation features a thermal efficiency of at least 60% (with both figures on the lower heating value basis).

Environmentally-friendly

Carbon dioxide (CO2) is released in smaller quantities into the atmosphere.

Nitrogen oxides (NOx) and sulfur oxides (SOx) are released in smaller quantities into the atmosphere.

High temperature wastewater is discharged in smaller quantities into the sea.

Our GTCC Business

In 1984. we delivered a combined cycle power plant to the Higashi-Niigata Thermal Power Station of Tohoku Electric Power Co., Inc. to achieve a revolutionary thermal efficiency over 44%, then the world’ s highest. It attained far greater energy efficiency than conventional thermal power plants.

In 1999. a combined cycle power plant incorporating the G-series gas turbine was constructed and delivered for the No. 4 Series for the same power station. The thermal efficiency of the plant exceeded 50%. In 2018. the combined cycle power plant with the J-series gas turbine reached a cumulative total operation time of 600.000 hours as a commercial system. A cumulative total operation time of more than 600.000 hours is a yardstick for the reliability of gas turbines in the power generation industry.

As Japan’ s one and only manufacturer engaging in design, manufacturing, civil engineering, installation, commissioning and after-sales services with its own technologies, we proudly hold a great track record.

For overseas markets, we have exported the combined cycle power plants to about 20 countries mainly in Southeast Asia, the Middle East, Europe, North America and South America.

Combined Cycle Power Generation

T-Point 2 is located at Takasago Machinery Works in Hyogo Prefecture, Japan.

It is the only commercially operating power plant in the world that was specifically built for validation of power solutions.

Its uniqueness is the robust long-term validation process that minimizes risk for customers and gives assurance of product performance and durability for subsequent units of the same frame.

Purposes of the T-Point 2

To validate gas turbine technologies newly applied to achieve higher efficiency, allow operations at elevated temperatures, and reduce NOx.

To validate the reliability through long-term commercial operations of the highly efficient and environmentally friendly combined-cycle power generation.

Development of T-Point

The original T-Point demonstration facility began operation in 1997 with M501G (60 Hz), which was upgraded to M501J in 2010 and M501JAC in 2015 with response to the power industry’s demand for large-scale, high-efficiency power generation.

Since the original T-Point can not satisfy the further requirement for larger capacity and higher efficiency, we made a decision to build T-Point 2.

T-Point 2 entered full commercial operation with an enhanced JAC gas turbine from July 2020.Validation of Next Generation

Combined Cycle Power Generation

With its combination of gas turbine and steam turbine,T-Point 2 is cutting edge combined cycle power plant validation facility.

By developing next-generation technologies and validating them in T-Point 2 GTCC facilities, Mitsubishi Power helps its customers world-wide attain a stable electricity supply.

Long term demonstration of off-site plant control at T-Point 2 is conducted from the Mitsubishi Power Takasago TOMONI HUB (Analytics and Performance Center). Validation operations are run to increase the reliability of the entire plant including the main equipment such as turbines as well as auxiliary equipment such as pumps and fans. In addition, various applications of a suite of intelligent solutions TOMONI™ that serve to shorten start-up time and automatically optimize operation parameters are installed in T-Point 2. Mitsubishi Power will also be training its AI applications, allowing T-Point 2 to eventually become the world’s first autonomous combined cycle power plant.