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1. 401068
ELECTRICAL SUPPLY
CHAPTER 1: OVERVIEW OF THE POWER SUPPLY
SYSTEM
TON DUC THANG UNIVERSITY
Tran Dinh Cuong, MSc
FACULTY OF ELECTRICAL AND
ELECTRONICS ENGINEERING

2. CHAPTER 1: OVERVIEW OF THE
POWER SUPPLY SYSTEM
1.1 The features of the power system
(generation, transmission – distribution
process and consumption)
1.2 Components of modern power system
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3. OBJECTIVES
 Understand about the power generation,
transmission - distribution process and
consumption
 Understand about components of modern
power system: generators, electrical
network, electrical loads
 Understand about Vietnam power system
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4. OUTCOMES
 Explain the basic components and functions,
parameters of equipment, wires,
characteristic of electrical loads, calculation
formulae in electrical field
 Evaluate the suitability of diagrams to design
the circuits in the low voltage system
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5. 1.1 THE FEATURES OF THE
POWER SYSTEM
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1.1.1 The power generation
 The power plant produces electricity
 A power plant can be of several types depending
mainly on the type of fuel used:
 Thermal power plant
 Hydro electric plant
 Solar, wind … power plant

6. 1.1 THE FEATURES OF THE
POWER SYSTEM
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1.1.2 The transmission - distribution process
 The purpose of the electric transmission system is
the interconnection of the electric-energy-producing
power plants or generating stations with the loads
 The transmission network that in turn serves any
number of distribution substations
 A typical distribution substation will serve from 1 to as
many as 10 feeder circuits.
 A typical feeder circuit may serve numerous loads of all
types

7. 1.1 THE FEATURES OF THE
POWER SYSTEM
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8. 1.1 THE FEATURES OF THE
POWER SYSTEM
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1.1.3 The consumption
 Load classification includes:
 The residential load
 The commercial load
 The industrial load
 and others

9. 1.1 THE FEATURES OF THE
POWER SYSTEM
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~
Generation
process
Transmission & Distribution
process
Consumption
process
Transformers Transformers

10. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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1.2.1 The generator:
 The thermal power plant:

11. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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1.2.1 The generator:
 The hydro electric plant

12. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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1.2.1 The generator:
 The nuclear plant
 The wind power plant
 Solar power plant

13. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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1.2.2 The electrical network:

14. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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15. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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1.2.3 Classification of electricity consumers:
 Class I
 Class II
 Class III

16. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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1.2.4 The characteristics of the power system
 Process manufacturing and power consumption
occur simultaneously
 Electrical energy storage
 Protective systems
 Trend of the research and development
 …

17. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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 Safety:

18. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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 Protective low voltage systems:
 TT system
 TN system
 IT system

19. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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 TT system:

20. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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 TN system:

21. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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 IT system:

22. 1.2 COMPONENTS OF MODERN
POWER SYSTEM
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1.2.5 Viet Nam power system:
 Refer: http://www.evn.com.vn

23. SUMMARY AND ASSIGNMENTS
 In this chapter, we have learnt:
 The features of the power generation, transmission
- distribution process and consumption
 Components of modern power system
 Vietnam power system
 ASSIGNMENTS:
 Refer : [3]: (1.1) – (8.1)
 Write a report
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24. EXERCISES
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1/ Write a report as required by lecturers
2/ Do some research on renewable energy
sources