2K6EE 506 : POWER SYSTEMS- I
Module I (12 hours)
Economic considerations in power generation: Classification of generation costs-interest and depreciationmethods of providing depreciation-load curves-terms associated with generation-significance of load and diversity factors-base load and peak load plants. Tariff-types, Power factor-causes of low power factor-disadvantagesmethods of power factor improvement-most economical power factor economical comparison of the two methods of increasing power supplied.
Module II (15 hours)
Design of transmission lines: Main components of overhead lines- Conductors-materials-configuration-spacing and clearances-supports-span length-calculation of sag and tension- effect of wind and ice-supports at unequal heights – sag template-equivalent span -vibration and dampers-Insulators-materials-types-causes of failure of insulatorsdistribution of potential over a string of insulators-string efficiency-methods of improving string efficiencyformation of corona-disruptive and visual critical voltages-factors affecting corona-advantages and disadvantagescorona power loss-methods of reducing corona effects-underground cables-general construction-classificationinsulation resistance-capacitance of 1-core cable-dielectric stress-grading methods-capacitance of 3-core cables-laying of cables-heating of cables.
Module III (13 hours)
Characteristics and performance of transmission lines: Constants of transmission lines-resistance-inductance and capacitance of 1-Φ,2 wire lines-composite conductors-GMD and GMR-inductance and capacitance of 3-Φ linestransposition-double circuit lines-bundled conductors-classification of lines short lines-voltage regulation and efficiency-medium lines-nominal T and Π configurations-ABCD constants- long lines- rigorous solutioninterpretation of long line equation-Ferranti effect- tuned power lines-power flow through lines-methods of voltage control.
Module IV (12 hours)
Power distribution: -Feeders, distributors and service mains- types of distribution systems -design of feedersKelvin’s law-current distribution and voltage drop calculations in DC distributors with concentrated loading and uniform loading-AC distributors with concentrated loading-radial and ring systems-AC interconnected systems, Improvement of existing distribution system-LT capacitor installation-size, connection and specifications.
1. Nagarth J & Kothari D P, Power system Engineering, TMH
2 J B Gupta, A course in electrical power, S K Kataria & Sons
1. Stevenson Jr, Elements of power system analysis, TMH
2. Pabla A S, Electric power distribution systems, TMH
3. Wadhwa C L, Electric power systems, Wiley eastern LTD
4. Gupta B R power system analysis and design, Wheeler publishing & co.