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Note for Transmission and Distribution System - TDS By ajit sahu

  • Transmission and Distribution System - TDS
  • Note
  • Govt polytechnic balangir - GpBlgr
  • Electrical Engineering
  • 10 Topics
  • 707 Views
  • 9 Offline Downloads
  • Uploaded 3 months ago
Ajit Sahu
Ajit Sahu
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Text from page-1

CONTENT GENERATION UNDER EDUSAT PROGRAMME GENERATION TRANSMISSION & DISTRIBUTION (EET-403) Contributors:1. Sri S.R. Mohanty, Lect. (Elect), G. P. Kendrapara. 2. Sri Prasanjit Das, Lect. (Elect), B.O.S.E., Cuttack. 3. Smt. Snehalata Samal, Lect. (Elect), B.O.S.E., Cuttack.

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INDEX SL. NO. 1 TOPICS PAGE NO. GENERATION OF ELECTRICITY 1 to 14 2 TRANSMISSION OF ELECTRIC POWER 15 to 20 3 OVER HEAD LINE 21 to 29 4 PERFORMANCE OF SHORT & MEDIUM LINES 30 to 41 5 EHV TRANSMISSION 42 to 46 6 DISTRIBUTION SYSTEM 47 to 55 7 UNDERGROUND CABLE 56 to 66 8 ECONOMICS ASPECTS 67 to 78 9 TYPES OF TARIFF 79 to 82 10 SUBSTATION 83 to 87

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CHAPTER-1 GENERATION OF ELECTRICITY HYDRO ELECTRIC POWER PLANT Hydro Electric Power – The power obtained from Energy of Falling water is Known as hydro Electric Power. HYDRO ELECTRIC POWER PLANT: The power Plant Which generates Electrical Energy by utilizing the potential energy of water at high level called hydro electric power plant i.e. the potential energy stored in water is converted to kinetic energy again that Kinetic Energy is converted to Mechanical energy by allowing water through hydraulic turbine runner & finally mechanical energy is used to run generators OR alternator, Which coupled with turbine shaft . Mathematically Electric power (P) = WQHŋ x 9.81x10-3 KW W= Sp. Weight of water in Kg/m3 Q= Rate of flow of water m3/Sec H= Height or head in meter ŋ= Efficiency of power plant HYDROLOGICAL CYCLE: The process by which moistures from the surface of water bodies covering the earth surface transferred to the land & back to the water bodies again called hydrological cycle. HYDROLOGY: The study of hydrological cycle is called hydrology i.e. Hydrology deals with occurrence & distribution of water over & under the earth surface.

Text from page-4

Some definition a. Precipitation It may be defined as the total condensesation of the moisture that reach the earth surface in any from i.e. ice, hail. Sleet dew & forestation etc. b. Evaporation The process by which all the rainfall is return to the atmosphere from the land & water surfaces called evaporation. Evaporation includes evaporation from land & water surfaces. Evaporation by transmission & atmospheric evaporation c. Runoff It may be defined as the pat of precipitation which is available as stream flow i.e. Runoff =Total precipitation – Total evaporation HYDRO GRAPH: It is graphical representation of discharge or flow with the time. Here flow is in ordinates in height number of m3/sec X km3 or K.Watt. & time as abscissa In hour ,day, week, month or year. FLOW DURATION CURVE: It is the graph between flows & length of time during which they are available.

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