Transmission And Distribution
Technical Publications, Jan 1, 2008 - 640 pages
Structure of electric power system: Various levels such as generation, Transmission and Distribution; HVDC and EHV AC transmission: Comparison of economics of transmission, Technical performance and Reliability, Application of HVDC transmission system. FACTS (qualitative treatment only): TCSC, SVC, STATCOM, UPFC.Transmission Line ParametersParameters of Single and Three phase transmission lines with Single and Double circuits: Resistance, Inductance and Capacitance of solid, Stranded and Bundled conductors: Symmetrical and Unsymmetrical spacing and Transposition: application of Self and Mutual GMD; Skin and Proximity effects; Interference with neighbouring communication circuits. Typical configuration, Conductor types and Electrical parameters of 400, 220, 110, 66 and 33 kV lines. Modelling and Performance of Transmission LinesClassification of lines: Short line, Medium line and Long line; Equivalent circuits, Attenuation constant, Phase constant, Surge impedance; Transmission efficiency and Voltage regulation; Real and Reactive power flow in lines: Power-angle diagram : Surge-impedance Loading, loadability limits based on thermal loading. Angle and Voltage stability considerations; Shunt and Series compensation; Ferranti effect and Corona loss.Insulators and CablesInsulators: Types, voltage distribution in insulator string and grading, Improvement of string efficiency. Underground cables: Constructional features of LT and HT cables, Capacitance, Dielectric stress and Grading, Thermal characteristics.Substation, Grounding System and Distribution SystemTypes of substations; Bus-bar arrangements; Substation bus schemes: Single bus scheme, Double bus with Double breaker, Double bus with Single breaker, Main and Transfer Bus, Ring Bus, Breaker-and-a-Half with Two main buses, Double bus-bar with Bypass isolators.Resistance of grounding systems: Resistance of driven rods, Resistance of grounding point electrode, Grounding grids; Design principles of substation grounding system; Neutral grounding.Radial and Ring-main distributors; Interconnectors; AC distribution: AC distributor with Concentrated load; Three-phase four-wire distribution system; Sub-mains; Stepped and Tapered mains.
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18D C Distributor with Distributed Load 1
Chapter2 Transmission Line Parameters 21 to 294
Chapter 3 Performance of Jransmission Lines 31 to 3 132
Examples with Solutions 3 96
Review Questions 3 130
Review Questions 568
Chapter 8 Mechanical Design of Transmission Lines 8 1 to 8
Other editions - View all
angle bus bar Calculate charging current circuit breakers clearance connected constant copper loss copper required corona loss dielectric disruptive voltage distance distributor earth electrical equation Example fault current Ferranti effect flux linkages given gmax ground Hence high voltage HVDC impedance increases intersheath kg/m km long kV/cm lead sheath length line conductor line voltage load current Marks method minimum potential mutual capacitance neutral overhead line overhead transmission line p.f. lagging phase transmission line phasor phasor diagram Power delivered power factor radius reactive power receiving end voltage Refer section sending end voltage series capacitor shown single core cable single phase skin effect Solution STATCOM strands string efficiency substation supply temperature tension thyristors towers transformer transmission and distribution Transmission efficiency transmission line transmission system voltage drop voltage level voltage regulation volts volume of copper wire d.c. system