Download presentation
Presentation is loading. Please wait.
Published byKelley Lucas Modified over 9 years ago
1
17-1 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Chapter 17 Electric Utility Applications These applications are growing rapidly
2
17-2 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications HVDC Transmission There are many such systems all over the world
3
17-3 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications HVDC Poles Each pole consists of 12-pulse converters
4
17-4 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications HVDC Transmission: 12-Pulse Waveforms Idealized waveforms
5
17-5 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications HVDC Transmission: Converters Inverter mode of operation
6
17-6 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Control of HVDC Transmission System Inverter is operated at the minimum extinction angle and the rectifier in the current-control mode
7
17-7 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications HVDC Transmission: DC-Side Filters Tuned for the lowest (12 th harmonic) frequency
8
17-8 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications HVDC Transmission: AC-Side Filters Tuned for the lowest (11 th and the 13 th harmonic) frequencies
9
17-9 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Effect of Reactive Power on Voltage Magnitude Illustration of the basic principle
10
17-10 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Thyristor-Controlled Inductor (TCI) Increasing the delay angle reduces the reactive power drawn by the TCI
11
17-11 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Thyristor-Switched Capacitors (TSCs) Transient current at switching must be minimized
12
17-12 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Instantaneous VAR Controller (SATCOM) Can be considered as a reactive current source
13
17-13 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Characteristics of Solar Cells The maximum power point is at the knee of the characteristics
14
17-14 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Photovoltaic Interface This scheme uses a thyristor inverter
15
17-15 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Harnessing of Wing Energy A switch-mode inverter may be needed on the wind generator side also
16
17-16 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Interface with 3-Phase Utility Grid Uses a thyristor inverter
17
17-17 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Interface of SMES Can be used for utility load leveling
18
17-18 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 17 Electric Utility Applications Active Filters for Harmonic Elimination Active filters inject a nullifying current so that the current drawn from the utility is nearly sinusoidal
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.