What are the main components in a combined cycle power plant?

What are the main components in a combined cycle power plant?

The major components of a combined cycle plant are a gas turbine, a heat recovery steam generator, a steam turbine, and balance of plant systems.

What are the equipments used in power plant?

Power Plant Equipment

• Gas turbines.
• Steam Turbines.
• Generators.
• Boiler.
• Air Pollution Control.
• Plant Instrument Control System.
• BOP, Balance of Plant.

Which types of turbines are used in a combined cycle power plant?

Combined cycle power plant: how it works A combined-cycle power plant uses both a gas and a steam turbine together to produce up to 50\% more electricity from the same fuel than a traditional simple-cycle plant. The waste heat from the gas turbine is routed to the nearby steam turbine, which generates extra power.

What are the examples of combined power plants?

The most common type of combined cycle power plant utilizes gas turbines and is called a combined cycle gas turbine (CCGT) plant. Because gas turbines have low efficiency in simple cycle operation, the output produced by the steam turbine accounts for about half of the CCGT plant output.

What is duct firing in combined cycle?

In the case of duct firing, injection of fuel is utilized to increase the temperature and mass flow rate of the exhaust gases. Supplementary (Duct) firing may be used in combined cycles in the HRSG – raising the exhaust temperatures from about 1112F (600 °C) at GT exhaust to about 1472F (800°C) or even 1832F (1000 °C).

What are the substation equipment?

The following equipment are installed in distribution substations:

• Distribution Transformer.
• Circuit breaker.
• Lightning Arrester.
• Air Break (AB) switches / Isolator.
• Insulator.
• Busbar.
• Capacitor Bank.
• Earthing.

Which one is an electrical equipment of thermal power plant?

Electrical equipment used in thermal power plant : Alternators. Transformers. Switchgear. Exciter.

How a combined cycle plant works?

In a two-on-one combined cycle system, two combustion turbine generators work in conjunction with two heat-recovery steam generators and a steam turbine generator. The steam spins an additional turbine generator to produce more electricity. The steam is then condensed back to water and recycled.

How does a combined cycle generator work?

What is a combined heat and power plant?

Combined heat and power (CHP), also known as cogeneration, is: A suite of technologies that can use a variety of fuels to generate electricity or power at the point of use, allowing the heat that would normally be lost in the power generation process to be recovered to provide needed heating and/or cooling.

How does a combined-cycle power plant improve the overall efficiency of a thermal power plant?

Combining two or more thermodynamic cycles improves overall efficiency, which reduces fuel costs. The principle is that after completing its cycle in the first engine, the working fluid (the exhaust) is still hot enough that a second subsequent heat engine can extract energy from the heat in the exhaust.

How does a combined cycle power plant work?

The HRSG creates steam from the gas turbine exhaust heat and delivers it to the steam turbine. The steam turbine sends its energy to the generator drive shaft, where it is converted into additional electricity. Want to learn more about how combined cycle power plants work?

How to increase the power system efficiency of the combined cycle?

To increase the power system efficiency, it is necessary to optimize the HRSG, which serves as the critical link between the gas turbine cycle and the steam turbine cycle with the objective of increasing the steam turbine output. HRSG performance has a large impact on the overall performance of the combined cycle power plant.

What is the combined cycle used for?

A combination of the Brayton and Rankine cycles, often known as the combined cycle, has been found to obtain efficiencies as high as 60\% and consequently is now used extensively worldwide as the main source of power.

What is topping and bottoming cycle in power plant?

The cycle 1-2-3-4-1 which is the gas turbine power plant cycle is the topping cycle. It depicts the heat and work transfer process taking place in high temperature region. The cycle a-b-c-d-e-f-a which is the Rankine steam cycle takes place at a low temperature and is known as the bottoming cycle.