Book Details

HVAC & DC Transmission

HVAC & DC Transmission

Published by uLektz

Course Code:RT41022

Author:uLektz

University: JNTU Kakinada

Regulation:2013

Categories:Electrical & Electronics

Format : ico_bookePUB3 (DRM Protected)

Type :eBook

Rs.199 Rs.30 Rs.85% off

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Description :HVAC & DC Transmission of RT41022 covers the latest syllabus prescribed by JNTU Kakinada for regulation 2013. Author: uLektz, Published by uLektz Learning Solutions Private Limited.

Note : No printed book. Only ebook. Access eBook using uLektz apps for Android, iOS and Windows Desktop PC.

Topics
UNIT – I INTRODUCTION OF EHV AC TRANSMISSION

1.1 Necessity of EHV AC transmission – Advantages and problems

1.2 Power handling capacity and line losses – Mechanical considerations - Resistance of conductors

1.3 Electrostatics – Field of sphere gap – Field of line charges and properties

1.4 Charge ~ potential relations for multi–conductors – Surface voltage gradient on conductors

1.5 Bundle spacing and bundle radius – Examples

1.6 Distribution of voltage gradient on sub conductors of bundle – Examples

UNIT – II CORONA EFFECTS

2.1 Power loss and audible noise (AN) – Corona loss formulae

2.2 Charge voltage diagram – Generation – Characteristics – Limits and measurements of AN

2.3 Relation between 1–phase and 3–phase AN levels – Examples

2.4 Radio interference (RI) – Corona pulses generation – Properties and limits

2.5 Frequency spectrum – Modes of propagation – Excitation function – Measurement of RI, RIV and excitation functions – Examples.

UNIT – III BASIC CONCEPTS OF DC TRANSMISSION

3.1 Economics & Terminal equipment of HVDC transmission systems:Types of HVDC Links – Apparatus required for HVDC Systems

3.2 Comparison of AC &DC transmission – Application of DC Transmission System

3.3 Planning & Modern trends in DC transmission.

UNIT – IV ANALYSIS OF HVDC CONVERTERS AND SYSTEM CONTROL

4.1 Choice of Converter configuration – Analysis of Graetz

4.2 Characteristics of 6 Pulse & 12 Pulse converters

4.3 Cases of two 3 phase converters in star – Star mode and their performance

4.4 Principal of DC Link Control – Converters Control Characteristics – Firing angle control – Current and extinction angle control

4.5 Effect of source inductance on the system – Starting and stopping of DC link – Power Control.

UNIT–V REACTIVE POWER CONTROL IN HVDC

5.1 Reactive Power Requirements in steady state - Conventional control strategies –Alternate control strategies sources of reactive power

5.2 AC Filters – Shunt capacitors – Synchronous condensers

UNIT – VI HARMONICS AND FILTERS

6.1 Generation of Harmonics – Characteristics harmonics – Calculation of AC Harmonics – Non–Characteristics harmonics

6.2 Adverse effects of harmonics – Calculation of voltage & current harmonics – Effect of Pulse number on harmonics

6.3 Types of AC filters, Design of Single tuned filters – Design of High pass filters

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