Electricity In Our Lives (student preso)

1,042 views

Published on

student presentation
general physics
28 nov 2009

Published in: Education, Business, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,042
On SlideShare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Electricity In Our Lives (student preso)

  1. 1. Electricity in our lives<br />Pawat<br />Sahapat<br />Pat<br />Sirirat<br />
  2. 2. How electricity reaches our homes?<br />
  3. 3. 1.1 Power Plant<br />There are many types of power station. They are classify into two main groups: fuel and prime mover.<br />Fuel: nuclear, fossil fuel, geothermal and solar thermal<br />Prime mover: Steam turbine, wind turbine and gas turbine <br />In power station, fuel is often used to produce heat energy which turn the turbine. Thus, generating electricity.<br />
  4. 4. 1.2 High-Voltage Switchyard <br /><ul><li>Voltage of the electrical supply is raised.
  5. 5. Higher Voltage, lower current. With high current, more heat is produce.
  6. 6. Lower current, less energy is loss through heat
  7. 7. Consists of step-up transformers, circuit brakers, disconnector, current and voltage transformers.</li></li></ul><li>1.25 Transmission Lines <br /><ul><li>Transmission lines are path for electric power transmission.
  8. 8. Low resistance metal and larger cross-sectional area of wire is used to reduce resistance. Thus, reduce power loss
  9. 9. Limitation is the high cost</li></li></ul><li>1.3 Distribution Station <br /><ul><li>Step-down transformer
  10. 10. Decrease voltage, increase current
  11. 11. Make it usable for consumer
  12. 12. Distribute to domestic and commercial</li></ul>If we don’t convert<br />
  13. 13. 1.4 Residential Customer<br /><ul><li>Electricity that enter our homes is of alternating current (A/C)
  14. 14. Electrical appliances convert A/C to direct current (D/C) using transformers</li></ul>Ready to use!<br />
  15. 15. References<br />http://www.ehvpower.com/index.php?option=com_content&view=article&id=37&Itemid=16<br />http://pepei.pennnet.com/display_article/189159/6/ARTCL/none/none/1/Switchyard-Transformers-Overlooked-in-Power-Quality-Equation/<br />http://en.wikipedia.org/wiki/Power_plant<br />http://en.wikipedia.org/wiki/Transformer<br />
  16. 16. Task<br />Patt – researcher and pp.<br />Tar-researcher and pp.<br />Sirirat-researcher and pp.<br />Sonny-presenter.<br />

×