Why multiple turbines drive a single generator

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SUMMARY

Multiple turbines can effectively drive a single generator, particularly in systems utilizing steam turbines, which often consist of high pressure, intermediate, and low pressure turbines acting on the same shaft. This configuration is favored for its cost efficiency and reduced internal losses associated with multiple generators. In some cases, cross compound turbines with multiple shafts and generators exist, but they are less common. The KISS principle supports the use of a single turbogenerator with a multistage turbine for simplicity and efficiency.

PREREQUISITES
  • Understanding of steam turbine mechanics
  • Familiarity with gas turbine operations
  • Knowledge of power generation systems
  • Basic principles of the KISS (Keep It Simple, Stupid) principle
NEXT STEPS
  • Research the design and operation of multistage steam turbines
  • Explore the principles of combined cycle power plants
  • Learn about the KISS principle in engineering design
  • Investigate the differences between cross compound and single shaft turbine systems
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Engineers, power plant operators, and students in mechanical engineering or energy systems who are interested in turbine technology and power generation efficiency.

saadsarfraz
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A common sense questions. Can anyone care to provide their insights?
 
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saadsarfraz said:
A common sense question.

really ??
haven't seen that before, do you have an example ?
 
In my opinion, it is an usual system: what we call “ a steam turbine” are 3 turbines acting on the same shaft: high pressure, intermediate and low pressure. A gas turbine could be two in series-in combined cycle power plant.
 
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Can it be because having a single generator is less costly and would be more efficient as multiple generators would lead to some type of internal losses due to resistance or friction...
 
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Those multiple turbines are probably connected to the same shaft. Even though they have several sections, we call them collectively "a turbine"

Sometimes we have cross compound turbines with multiple shafts and multiple generators but one steam path. That's rare today.
 
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What type of turbine? Steam, gas, ? Is this a Co-gen with Heat Recovery Steam Gen?
 
saadsarfraz said:
A common sense questions.
Are you speaking of central power station equipment?
Common sense ? Look up KISS principle. One turbogenerator with multistage turbine of course .

turbogenerator.jpg


all on one shaft...
 
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