This document provides an overview of basic electrical engineering concepts including: - An introduction covering India's electrical energy scenario, power system layout, transmission methods, energy sources and electrical safety. - The importance of electricity including its bulk production capabilities, transportability, ease of control, speed and potential for conversion and storage. - Key details on India's electrical energy scenario such as total installed capacity, consumption levels in agriculture, and generation sources. - A breakdown of India's power system layout from generation stations to transmission lines to substations and distribution lines.

1. BASIC ELECTRICAL ENGINEERING
Dr. P. K. Sahu
Associate Professor
SCHOOL OF ELECTRICAL ENGG
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2. INTRODUCTION
• Electrical energy scenario in India
• Power system layout
• Comparison of overhead transmission lines and underground
cables
• Classification of sources of energy
• Types of generating stations
• Electrical safety rules
• Components of LT Switch gear
• Different electric wiring technique
• Necessity of earthing and fuses
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3. ESSENCE OF ELECTRICITY
• Need for Electricity
• Why Electricity/ not other forms.
i. Possibility of bulk Production and is transportability over long distances
ii. It is silent
iii. Ease of control
iv. It is very fast
v. Convertible to other forms
v. Convertible to other forms
vi. Possibility of storage
• The electrification of Kolkata city took place in 1879.
• Electrical Utility : CESU (Central Electricity Supply
Utility of Orissa Limited)
• Board of Trades Unit (kWhr)
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4. ELECTRICAL ENERGY SCENARIO IN INDIA
• Total installed capacity of power stations in India stood at 356
Giga watt (GW) as of May 31, 2019
• India is the world's third largest producer and fourth largest
consumer of electricity.
• Electric energy consumption in agriculture was recorded
• Electric energy consumption in agriculture was recorded
highest (17.89%) in 2015-16 among all countries.
• The per capita electricity consumption is low compared to
many countries despite cheaper electricity tariff in India.
• Power in (MW) from Thermal: 218,330, Nuclear: 6780,
Hydro: 44,478, other renewable: 57,260.
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5. ELECTRICAL ENERGY SCENARIO IN INDIA
• Total installed capacity: 356.8 GW
• Gross electricity generated: 1486.5 Twh
Type of Power
station
% of installed
capacity
% of power
generation
May 31st, 2019
(2017-18)
Coal 56.2% 75.9%
Large hydro 12.7% 9.7%
Small hydro 1.3% 0.4%
Wind 10% 4%
Solar 8% 2%
Nuclear 1.9% 2.9%
Gas 7% 3.9%
Bio mass 2.6% 1.2%

6. POWER SYSTEM LAYOUT
POWER SYSTEM LAYOUT
• The power station
• A set of transformers to raise the
generated power to the high
voltages used on the transmission
lines
• The transmission lines
• The substations at which the
• The substations at which the
power is stepped down to the
voltage on the distribution lines
• The distribution lines
• The transformers that lower the
distribution voltage to the level
used by the consumer's
equipment.
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