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Embed Size px. Start on. Show related SlideShares at end. WordPress Shortcode. Published in: Engineering. Full Name Comment goes here. Are you sure you want to Yes No. Jayne Wyatt Want to preview some of our plans? I can't believe how simple your reconditioning steps are! My old and once dead car batteries, cell phone battery, drill battery, camera battery and tons of other batteries are all reconditioned and working great again! Discover the "secret language" the Universes uses to send us guided messages and watch as your greatest desires manifest before your eyes.

Claim your free report. Show More. Sydeesh Yadav Jenugu. Varun Kumar. Naresh Chinna. Sadam Ansari. No Downloads. Views Total views. Actions Shares. Embeds 0 No embeds. No notes for slide. Ee eeguc 1. Signature of the Author Name: K. Kumar is of adequate quality. He has referred more than five books among them minimum one is from aborad author. Generation of electrical power by conventional and non—conventional methods.

Electrical energy conservation, energy auditing and power quality. Principle and design of illumination systems and methods of heating and welding. Electric traction systems and their performance. Industrial applications of electric drives. Non-conventional methods of power generation — fuel cells - tidalwaves — wind — geothermal — solar - bio-mass - municipal waste.

Effect of distributed generation on power system operation. Economics of power factorimprovement — power capacitors — power quality.

Importance of electrical energy conservation — methods — energy efficient equipments. Introduction to energy auditing. Brief introduction to electric welding — welding generator, welding transformer and the characteristics. Ltd, Kataria and Sons, Emphasis is given to create a clear mental picture of a power system to a beginner of the course Electrical Technology. As consumers, we use electricity for various purposes such as: 1.

Lighting, heating, cooling and other domestic electrical appliances used in home. Street lighting, flood lighting of sporting arena, office building lighting, powering PCs etc. Irrigating wast agricultural lands using pumps and operating cold storages for various agricultural products. Running motors, furnaces of various kinds, in industries. Running locomotives electric trains of railways.

Although complicated in construction, D. C generators were developed first to generate power in bulk. However, due to limitation of the D. C machine to generate voltage beyond few hundred volts, it was not economical to transmit large amount of power over a long distance. Thus generation, transmission and distribution of d.

Therefore, area specific generating stations along with its distribution networks had to be used. Review of conventional methods: 1.

A turbine is used to rotate the generator. Turbine may be of two types, namely steam turbine and water turbine. In a thermal power station coal is burnt to produce steam which in turn, drives the steam turbine hence the generator turbo set the elementary features of a thermal power plant is shown. In a thermal power plant coil is burnt to produce high temperature and high pressure steam in a boiler.

The steam is passed through a steam turbine to produce rotational motion. The generator, mechanically coupled to the turbine, thus rotates producing electricity. Chemical energy stored in coal after a couple of transformations produces electrical energy at the generator terminals as depicted in the figure. Thus proximity of a generating station nearer to a coal reserve and water sources will be most economical as the cost of transporting coal gets reduced.

In our country coal is available in abundance and naturally thermal power plants are most popular. However, these plants pollute the atmosphere because of burning of coals. A large amount of ash is produced every day in a thermal plant and effective handling of the ash adds to the running cost of the plant. The speed of alternator used in thermal plants is rpm which means 2-pole alternators are used in such plants. Water head may be available in hilly region naturally in the form of water reservoir lakes etc.

The potential energy of water can be used to drive the turbo generator set installed at the base of the hills through piping called penstock Water head may also be created artificially by constructing dams on a suitable river. In contrast to a thermal plant, hydel power plants are eco-friendly, neat and clean as no fuel is to be burnt to produce electricity. While running cost of such plants is low, the initial installation cost is rather high compared to thermal plants due to massive civil construction necessary.

Also sites to be selected for such plants depend upon natural availability of water reservoirs at hill tops or availability of suitable rivers for constructing dams. Water turbines generally operate at low rpm, so number of poles of the alternator is high. For example a pole alternator the rpm of the turbine is only rpm. It is estimated that within next 30 to 40 years, coal reserve will exhaust if it is consumed at the present rate. Nuclear power plants are thought to be the solution for bulk power generation.

At present the installed capacity of nuclear power plant is about MW and expected to expand further in our country. The present day atomic power plants work on the principle of nuclear fission of U. In the natural uranium, U constitutes only 0.

When U is bombarded by neutrons a lot of heat energy along with additional neutrons is produced. These new neutrons further bombard producing more heat and more neutrons. However this reaction is allowed to take place in a controlled manner inside a closed chamber called nuclear reactor. To ensure sustainable chain reaction, moderator and control rods are used. Moderators such as heavy water deuterium or very pure carbon C are used to reduce the speed of neutrons. To control the number neutrons, control rods made of cadmium or boron steel are inserted inside the reactor.

The control rods can absorb neutrons. If we want to decrease the number neutrons, the control rods are lowered down further and vice versa.

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