2009-09-10 The Transmission of Electric Energy Part I

2009-09-10 The Transmission of Electric Energy Part I - The...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
The Transmission of Electric Energy Part I Jovan Ilić ECE 18-418 Fall 2009
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The Transmission of Electric Energy • Networked generation/demand vs local – Geographically distributed demand – Transportation vehicles • Advantages of interconnected systems – Total installed power less than total demand – Improved reliability – Smaller frequency deviations – Peak demands at different times – Wheeling and dealing power
Background image of page 2
• Interconnection disadvantages – Transmission limits – Power losses • Transmission • Distribution – Parallel paths, loops, etc. – Technical and non-technical overhead – Power flow path difficult to control • Ideal power supply – Interconnected with backup capability
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Generation Transmission Sub-transmission Feeder Service/Secondary 3 – Phase “network” < 30 kV 115 kV 765 kV 3 – Phase “network” 34.5 kV 230 kV 1, 2 and 3 – Phase “radial” 4.2 kV 34.5 kV 1, 2 and 3 Phase 120/240 V Switching Substation Service TR Step-up TR Generation < 30 kV Step-up TR Transmission and Distribution Network
Background image of page 4
Electrical Power System Essentials Voltage levels in the Dutch System Note: This looks like a radial network but it is not
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electrical Power System Essentials Rated voltage for AC power system
Background image of page 6
Electrical Power System Essentials Network Structures Radial structure Loop structure Multi-loop structure
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
• Radial structure – Cheaper – No plan B for faults • Loop structure – More expensive
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/20/2010 for the course ECE 18418 taught by Professor Illic during the Fall '09 term at Carnegie Mellon.

Page1 / 26

2009-09-10 The Transmission of Electric Energy Part I - The...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online