ABB KUC755AE105 3BHB005243R0105 drive unit

ABB KUC755AE105 3BHB005243R0105 drive unit

Soft start of water pump turbine

If a reversible turbine/generator is used, the turbine can also operate as a pump. They can

Water is pumped into the elevated reservoir to achieve energy storage and meet the demand during peak electricity periods.

In the working mode of the water pump, the generator is used as a motor. Due to the fact that this type of generator/motor is typically

It has a high rated power, so it is almost impossible to start directly online - even if not

Carrying a load.

Using ABB's MEGADRIVE LCI soft starter to start large synchronous generators/electricity

The machine is not a problem at all. Starting the generator in motor mode, the water pump turbine is unloaded,

Usually, the required power is less than 10% of the rated power of the turbine. MEGADRIVE LCI Soft

The starter will continuously increase the voltage and frequency of the motor, and smoothly reduce the turbine speed from zero

Accelerate to the speed synchronized with the power grid. This will minimize the impact on the power grid to the greatest extent possible

The impact, such as voltage drop caused by high starting current. In addition, it can also reduce the impact on

The mechanical and thermal stresses of the turbine/generator reduce maintenance costs and extend the lifespan of the equipment

service life.

Frequency converters are used for gas turbine starters and pumped storage power plants

The direct online starting of large synchronous motors can cause high starting current and sudden voltage fluctuations in the power supply network

Reduce and generate thermal stress on the motor and mechanical stress on the shaft system.

advantage

- Reduce the impact of starting on the power supply network and mechanical components

- Extend the service life of equipment

- The starting current is limited to the rated current or less

Using a MEGADRIVE LCI soft starter to sequentially start multiple machines - even

- Machines with different rated powers

- No need for speed detection device and rotor position detection device

Gas turbine starter

Gas turbines often need to be started in a short period of time and quickly started up. The MEGADRIVE LCI gas turbine starter uses a generator as an electric motor to operate above the gas turbine

The ignition speed. Then, the gas turbine can take over and independently accelerate the generator's operation

Speed, reach the rated speed, and synchronize it with the power grid.

Grosskrafttwerke Mannheim, Germany (GKM)

Malarenergi, Sweden

ABB refurbishes 280MW boiler for Unit 6 of GKM thermal power plant located in Mannheim, Germany

ABB is a municipal power and central heating provider headquartered in Westerros, Sweden

The project has supplied multiple medium voltage frequency converters. Two thirds of the 5.8MW boiler feedwater pumps are added

M ä larenergi has supplied multiple sets of medium voltage frequency converter systems. Energy audit conducted by ABB

Installed a frequency converter and replaced the inefficient hydraulic coupling.

Indicating that upgrading centralized heating pumps through the use of frequency converters can bring significant energy savings

Potential. Four resistors and a slip ring motor are taken from a frequency converter with a rated power of 1765 kW

After replacement, it is estimated that 12 million kilowatt hours of energy can be saved annually, and carbon dioxide emissions can be reduced by approximately 1% annually

Dai.

Ten thousand tons.

This greatly reduces the heat loss caused by flow control methods, while also increasing the annual electricity production

Helsinki Energy, Finland

Increased by 35 million degrees.

ABB supplies medium voltage frequency converter systems to Helsinki Energy. Helsinki Energy is

One of the largest energy companies in Finland dedicated to power generation, distribution, and centralized heating. Helsinki

University of Illinois, USA

The boiler feedwater pump of Energy Combined Heat and Power (CHP) power plants used to be powered by slip energy

ABB supplied multiple frequency converters to Abbott power plants owned by the University of Illinois in the United States. hair

The winding rotor motor of the control system is controlled using a rated power of 4500kW

The power plant is equipped with a turbocharger fan controlled by imported guide vanes, using a rated power of 750 kW

Upgrade the four sets of frequency converter systems.

The frequency converter has been upgraded.

After the upgrade, the efficiency of the power plant has been greatly improved and maintenance costs have been effectively reduced.

By upgrading, an annual energy savings of $63000 can be achieved, and carbon dioxide emissions can be reduced annually

Approximately 730000 kilograms of carbon, reducing maintenance costs by $10000 annually.