Power Generation and Plant Operation

1. INTRODUCTION

2. Introduction to Power System
Generation ,Transmission ,Distribution overview
Prediction of load
Types of load
Load forecasting
Conventional and non conventional resources of energy
Steam Power Plant
Boilers, Types of Boiler
According to Flow
Boiler performance
Efficiency of Boiler

3. Gas Turbine Power Plant
Operation and control of Gas Turbine
Combined cycle Power Plant
Diesel Electric Power Plant
Hydro Electric Power Plant
Working Principle of Hydro Electric Power Plant
Types of Hydro Electric Power Plant
Turbine Characteristics
Nuclear Power Plant
Nuclear Reactor
Operating mechanism Of Nuclear Power Plant

4.  Combination of generation considering the economic
dispatch
 Economic Dispatch and Unit Commitment
 Renewable energy
 Resources of Renewable energy
 Brief description of Renewable energy resources i.e Wind
Energy
 Solar energy
 Biomas energy
 Geothermal
 Tidal energy
 Ocean energy
 04Quizzes and 04 Assignments

5.  Elements of electrical power station design”
by M. V. DeshPanday
 Electric Power Generation by Muhammad
Naeem Arbab

6. Main parts of power system
 Generation :
 Transmission :
 Distribution :

7.  Power station is a factory
 Converts one form of energy to electrical
energy
 Three phase AC system is almost universal
 Main advantage of AC is to easily step up and
step down the voltage

8.  High voltage transmission is the second
important part of power system
 Large bulk of power transmission over a long
distance
 For transmission , the best thing to see is :
Transmission efficiency , regulation and
economy.

9.  The energy supplied to consumer on low
voltage level.
 Feeders are conductors which carry power
from transmission substation to various
distribution substation.
 Feeders are not tapped for direct power
consumption.

10.  What are the various types of load?
 How to select the type of power station ?
 How much power is to be obtained in the
power station ?
 How can load be shared economically between
various power stations in power system ?

11.  How to choose the capacity of transformers
and location of substations ?
 How to determine the voltage and size of
transmission ?

12.  Demand factor :
Ratio of maximum demand to connected load
 Load factor :
Ratio of average load to maximum load
OR
ratio of energy consumed during a given period to
the energy used if the maximum demand maintained
throughout the period.
Diversity Factor:
Sum of individual Max demand to Max Demand on
power station.

13.  A residential consumer has 10 lamps of 4o
watts each connected at its premises , his
demand is as follows ;
From 12 midnight to 5am = 40 W
From 5am to 6pm = no load
From 6pm to 7pm = 320 W
From 7pm to 9pm = 360 W
From 9pm to 12 midnight = 160 W

14.  Plot Load curve.
 Find average load.
 Find maximum load.
 Find Load factor.
 Find electric energy consumed during the day.
 Find demand factor.

15.  Residential load :
 Consists of lights,fans,heaters , refrigerators , air
conditions.
 Load varies time to time
 If load curve plotted , generally load factor is very
low it may be 10% - 12%

16.  Mainly lightening of shops , advertisements etc
 Same load like residential but at larger scale
 Spread more hours of the day
 Load factor may be 25% - 30%
 Not as large as industrial load

17. It is subdivided into sections depending on power
range.
 SMALL SCALE : takes upto 25kW
 MEDIUM SCALE : takes load upto 25kW – 100kW
 LARGE SCALE : takes 100 – 500 kW
 HEAVY INDUSTRIES : require more than 500kW
demand factor = 85-90 %
L.F 70-80%
 CHEMICAL INDUSTRIES, TEXTILE MILLS ,
LARGE SCALE MANUFACTURING .

18.  Classified as a separate type
 Special working conditions
 Example : Defiance factories

19.  Most common lighting load
load depends on authorities
 Practically load remains constant during dark
hours
 Demand factor = 100%
Load factor on 24h basis = 20 – 25%
 Second municipal load is water supply and
drainage
 system, mostly used in off peak hours .

20.  Type of load for supplying water for fields , by
means of suitable time and season .
 MINING LOAD
 Mining load major at day time

21.  Large metropolitan electric traction is important
load
 Tramcar has 4 motor normally 40kW each
 Trollybus needs 75 - -100kW
 Suburban train 100 – 125kW of 4 motors
 Some passenger trains also used electric

22. `
 Load requirement is studied and determined in
individual cases
 Instead of generating its own power
 It takes power from large power company

23.  Essential part of power project design
 Load requirment of particular area or region
 Forecast based on
 1- past development of power requirement of region
 2- application received from various prospective consumers
 3- trends in the development of industries and other potential
or development of load

24.  STATISTICAL METHOD :
1- study of data collected from past records
2-Load demand curve variation
3- Mainly annaul increase is 7 - 8 %

25.  After visiting the area load is forecasting takes
place
 After seeking information of agriculture
commercial and industrial development
 The person investigating this method should
be a good sales engineer

26.  In typical survey of growth of power load , a
number of factors need carefully analysis
 General geographical region and the
subdivisions of the region where power is to be
sold
 Topography and climate of the region

27.  Population distribution
 Availability of labour
 Natural resources
agriculture timber minerals and raw material
for manufacturing industries
Economic activities
 Income per person

28.  Use of electric power and energy , the existing
use and existing rate of consumption of
electrical energy
 Relative cost electric and other form of energy
availabale in region

29.  The distribution losses varies from 10 – 15%
 After prediction of load , the next problem is to
determine the type of generation
 Which type of generating plant is easily
feasible and suitable condition.

30.  REAL TIME/CRITICAL SHORT TERM
Seconds to Hours
 SHORT TERM LOAD FORECASTING
Hours to Days
 MEDIUM TERM LOAD FORECASTING
Days to Months
 LONG TERM LOAD FORECASTING
Months to Years