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  4. Switched-capacitor high-speed emulator for real-time fault location in electrical power systems
 
research article

Switched-capacitor high-speed emulator for real-time fault location in electrical power systems

Gaugaz, Francois  
•
Krummenacher, Francois  
•
Kayal, Maher  
December 1, 2018
Analog Integrated Circuits And Signal Processing

This research presents a discrete-time transmission line model based on the propagation of travelling waves. In this approach, the transmission line is emulated by means of many interconnected unit delay cells implemented with switched-capacitor (SC) circuits. The accuracy and limitations of this method is compared to existing transconductance-capacitor solutions and is evaluated in the frame of a novel power network fault location method based on the electromagnetic time-reversal principle. The impact of the non-ideal effects associated to analog CMOS SC circuits, such as amplifier finite gain, offset and switch charge injection is evaluated in the same context. A possible application of the model for the simulation of interconnected or multi-conductor lines is also discussed. After an AMS 0.35 mu m process implementation, it is shown that the present method allows a fault location within 1% resolution and is a hundred times faster than nowadays digital solutions. This speed improvement allows a fault location within 160 ms, making thus real-time applications realistic.

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Type
research article
DOI
10.1007/s10470-018-1226-1
Web of Science ID

WOS:000449492500007

Author(s)
Gaugaz, Francois  
•
Krummenacher, Francois  
•
Kayal, Maher  
Date Issued

2018-12-01

Publisher

SPRINGER

Published in
Analog Integrated Circuits And Signal Processing
Volume

97

Issue

3

Start page

449

End page

456

Subjects

Computer Science, Hardware & Architecture

•

Engineering, Electrical & Electronic

•

Computer Science

•

Engineering

•

switched-capacitor circuits

•

analog emulation

•

transmission line emulation

•

power network fault location

•

electromagnetic time-reversal

•

circuits

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
GR-KA  
Available on Infoscience
December 13, 2018
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/151813
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