L2 introduction to power system
- 1. Introduction to the course
- 2. Electric Power System ELE 101 / 102 Dept of E & E Engg, MIT Manipal 21 Branch of Electrical Engineering which deal with the Technology of Generation,Generation, Transmission andTransmission and DistributionDistribution DC Power system Pearl Street Station in New York City, 1882 “Illuminating Companies” by Thomas A. Edison Three phase AC Power System, 1896 2 Generators & Transmission line @ 25 Hz
- 3. Power System Structure S U B T R A N S M I S S I O N N E T W O R K E H V A C : 7 6 5 k V , 4 0 0 k V H V A C : 2 2 0 k V H V D C : ± 5 0 0 k V 1 3 2 k V , 1 1 0 k V , 6 6 k V , 3 3 k V T R A N S M I S S I O N N E T W O R K G E N E R A T I O N T O O T H E R P O O L M E M B E R T O O T H E R P O O L M E M B E R V e r y l a r g e C u s t o m e r s L a r g e C u s t o m e r s M e d i u m C u s t o m e r s S m a l l C u s t o m e r s ( 3 P h a s e 4 1 5 V / 1 P h a s e , 2 4 0 V ) D I S T R I B U T I O N N E T W O R K 1 1 k V 4 1 5 V P r i m a r y S e c o n d a r y 3 P h a s e , 5 0 H z 1 1 k V t o 2 2 k V ELE 101 / 102 Dept of E & E Engg, MIT Manipal 3
- 4. Components of Power System ELE 101 / 102 Dept of E & E Engg, MIT Manipal 4 Generators: Alternators, 3 phase, AC, 50 Hz, 11 – 22 KV Transformers: Voltage level conversion without changing frequency and power Ex: 11KV to 220KV, 22KV to 132KV, 110KV to 11KV, 11 KV to 415V Substations: Control centre for Distribution network Loads: Electrical Load: Motors, household appliances, lighting Mechanical Load: Pulleys, Fans, Flooring machine, blowers, etc.
- 5. Transmission & Distribution Voltage Levels ELE 101 / 102 Dept of E & E Engg, MIT Manipal 5 Transmission Networks – EHV AC or HVDC Operates @ 765 kV/ 400 kV/ 220 kV AC or ± 500 kV DC AC Sub-Transmission Networks Operates @ 132 kV/ 110 kV/ 66 kV/ 33 KV AC Distribution Network Primary side: 11 kV Secondary side: 415 V, 4 wire AC Household 230 V, 50 Hz, Single phase
- 6. Transmission & Distribution Voltage Levels ELE 101 / 102 Dept of E & E Engg, MIT Manipal 5 Transmission Networks – EHV AC or HVDC Operates @ 765 kV/ 400 kV/ 220 kV AC or ± 500 kV DC AC Sub-Transmission Networks Operates @ 132 kV/ 110 kV/ 66 kV/ 33 KV AC Distribution Network Primary side: 11 kV Secondary side: 415 V, 4 wire AC Household 230 V, 50 Hz, Single phase