SCHEMATIC ARRANGMENT OF STEAM POWER PLANT

Operation of Steam Power Plant Based on a clear Schematic:

Steam Power Plant basically operates on the Rankine cycle.

Schematic Arrangement of Steam Power Plant

Coal is burnt in a Boiler,which converts water into steam.
The Steam is expanded in a Turbine,which produces Mechanical Power driving the Generator coupled to the Turbine.
The steam after expansion in Prime mover is usually condensed in a Condenser to be fed into the Boiler again.
In practise,however,a large number of modifications and improvements have been made so as to effect economy and improve the Thermal Efficiency of the plant.
The working of a modern Coal-fired Steam Power Plant ca be studied conveniently with the help of various Cycles.
Main Constituents of a Steam Power Plant are.

1.Boiler.

2.Boiler Furnace

3.Super heater and Re heater.

4.Economiser and Air Preheater.

5.Condenser.

6.Prime Mover.

7.Spray Ponds and Cooling Tower.

8.Coal Handling Plant.

9.Pulverising Plant.

10.Draft System.

11.Ash Handling Plant.

12.Control Room.

13.Switch Yard.

Schematic arrangement of the Modern Steam Power plant is show above for a better Idea.

Comments

GENERATOR

GENERATOR: A Generator is a machine which converts Mechanical energy into Electrical energy.These are widely used inside the Power plants for the generation of Power. Generator In general the Generator we see in a Thermal power plant gains its mechanical energy from the Turbine connected to it and this mechanical energy is thus converted into the required Electrical energy by the Generator.I myself experienced a 15 days of internship in a Thermal power plant and the Generator was about the size of a lager hall both in its length and breadth and the output Electrical energy is thus achieved by the use of a Generator.

SWITCHING TRANSIENTS IN TRANSFORMER

Switching Transients: The word Transients is always very Scary for me but not any more hahaaa...........what about you???? Well coming to the point...why do these Switching Transients occur in a Transformer. When the switch is closed when the voltage is maximum...then the flux required by the core is zero and the available flux in the core is also zero and hence NORMAL OPERATION is sufficient When the switch is closed when the voltage is crossing zero...then the flux required by the core is maximum but here the avaliable flux in the core is zero and hence TRANSIENT OPERATION is required Here when the Transient operation takes place then the flux doubles gradually and this is known as Doubling Effect of Transformer.This Doubling Effect causes magnetic in rush current and Damage in the insulation. Using Secondary Harmonic Restraining Coil can reduce all these Drawbacks.

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