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Course Detail

Course Name Electrical Energy Systems I
Course Code 15EEE312
Program B. Tech. in Electrical and Electronics Engineering
Semester Sixth
Credits Campus: Bengaluru, Coimbatore, Amritapuri
Year Taught 2015
Year Taught 2016
Year Taught 2017
Year Taught 2018


Unit 1

Structure of electric power system, General layout of power system, Methods of electric power generation – Grid systems advantages – EHV AC and HVDC transmission – Variable load on power stations – Load curve and load duration curve – Power factor improvement – Tariff-Transmission line parameters – Skin effect and proximity effect – Inductance of single phase and three phase transmission line single and double circuit lines – symmetrical and unsymmetrical spacing.

Unit 2

Capacitance of three phase transmission line – single and double circuit lines – symmetrical and unsymmetrical spacing – bundled conductors -Performance of transmission lines – Efficiency and regulation – Short, medium and long lines – ABCD constants – Ferranti effect – surge impedance – Real and reactive power flow in transmission lines – shunt and series compensation – corona loss. Cables – Construction and characteristics of single and three core cables – Insulation resistance and capacitance of a single core cable, most economical conductor size -Grading of cables.

Unit 3

Insulators – types – voltage distribution in suspension type insulators – string efficiency – Grading of insulators – Mechanical design of transmission lines – sag and span – supports at same level and different levels – sag template and stringing chart – Substations – types, general layout, Neutral grounding, Distribution systems: comparison of distribution systems – radial and ring – two wire dc, ac single phase and three phase systems – current and voltage calculations in distributors with concentrated and distributed loads.

Text Books

  • Kothari D. P. and Nagrath I. J., “Modern Power System Analysis” Tata McGraw Hill Publishing Company, 2003.


  • Wadhwa C L, “Electrical Power System”, Wiley Eastern Limited, India, 2007.
  • Hadi Saadat, “Power System Analysis” McGraw Hill Publishing Company, 2003.
  • B. R. Gupta, “Power System Analysis and Design”, Third Edition, S. Chand & Company Ltd., 2004.
  • Grigsby. L. L, “Electrical Power Engineering Handbook”, IEEE Press, 2001.

‘Electrical Energy Systems I’ is a course offered in the sixth semester of B. Tech. in Electrical and Electronics Engineering program at School of Engineering, Amrita Vishwa Vidyapeetham.

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