OVERVIEW OF NTPC POWER PLANT

PRESENTED BY :-JAIDEEP VERMA 5TH - AMECHANICAL ENGG.

CONTENTS

INTRODUCTIONBOILER AND ITS COMPONENTSTURBINEGENERATORSWITCHYARD

INTRODUCTION

NTPC is India’s largest energy power plant which was established in 7 Nov. 1975 to generates power development in India.

There are total 7 units in plant in which 4 units are of 500MW and 3 units are of 200MW power produce.

Total consumption of coal for producing 2600MW is about 48000 tons of coal per day.

BOILER

A boiler is closed vessel in which water is converted into steam by utilizing the heat of coal combustion.

Steam boilers are broadly classified into following two types:-

(a) Water tube boilers ,(b) Fire tube boilers.

WATER TUBE BOILER

In a water tube boiler, water flows through the tubes and the hot gases of combustion flow over these tubes. Water-tube boilers are used for high-pressure boilers.  

TURBINE

A turbine  is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. In which there are THREE types of turbine used in NTPC power plant are as follows:-

High pressure turbine(HP). Intermediate pressure turbine(IP). Low pressure turbine(LP).

HP TURBINE

HP turbine is a high pressure turbine the steam comes through the boiler first goes into HP turbine and it is a unidirectional turbine.

IP TURBINE

In IP turbine the steam of HP turbine goes into the air preheater for reheating and after this steam flows into a IP turbine.

Intermediate pressure turbine is a bi-direction.

LP TURBINE

The steam of IP turbine directly goes into a LP turbine for further expands the steam generating more energy.

LP turbine is large in size as compare to IP because it requires to handle the steam flow.

GENERATOR

Generator is a device which converts mechanical energy of steam comes through the turbine into electrical energy.

Generating capacity of 500MW is 21KV O/P voltage. Existing speed of generator is 3000 rpm.

GENERATOR TRANSFORMER

Generator transformer is used to store the power(ELECTRICITY) which is generated by the generator.

SWITCHYARD

It is the protective part of the whole power system.

Switch yard is also most essential part for transmission, distribution, and collection.

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