Gaugaz, Francois
Krummenacher, Francois
Kayal, Maher
OTA-C based high-speed analog processing for real-time fault location in electrical power networks
Analog Integrated Circuits And Signal Processing
Analog Integrated Circuits And Signal Processing
Analog Integrated Circuits And Signal Processing
Analog Integrated Circuits And Signal Processing
7
89
1
Analog emulation
Transmission lines
Power network fault location
Electromagnetic time-reversal
2016
2016
This paper explores the potential and limitations of analog integrated circuit techniques for the simulation of low-loss or lossless 1D or 2D transmission mediums. In this approach, a transmission line is mapped into a ladder consisting of N identical LC elements, each modeling a finite length increment of the line. Inductors are then emulated by a gyrator-capacitor combination, yielding a classical transconductor-capacitor (gm-C) circuit, suitable for integration. The validity of this approximation is discussed in the context of fault location in power networks, an application based on the electromagnetic time-reversal method. Design constraints on gm-C circuits are derived and non-ideal effects such as finite open-loop gain and component mismatches are evaluated. It is shown that a simple analog implementation can locate the fault within 1 % accuracy with a significant speed advantage over classical computational methods, reducing the processing time to < 100 ms.
Springer Verlag
0925-1030
Analog Integrated Circuits And Signal Processing
Journal Articles
10.1007/s10470-016-0742-0