The Identification of Travelling Waves in a Voltage Sensor Signal in a Medium Voltage Grid Using the Short-Time Matrix Pencil Method

Piotr Łukaszewski, Łukasz Nogal and Artur Łukaszewski
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Piotr Łukaszewski: Institute of Electrical Power Engineering, Warsaw University of Technology, 75 Koszykowa St., 00-662 Warsaw, Poland
Łukasz Nogal: Institute of Electrical Power Engineering, Warsaw University of Technology, 75 Koszykowa St., 00-662 Warsaw, Poland
Artur Łukaszewski: Institute of Electrical Power Engineering, Warsaw University of Technology, 75 Koszykowa St., 00-662 Warsaw, Poland

Energies, 2022, vol. 15, issue 12, 1-16

Abstract: Most of the fault wave localization methods are based on the analysis of line current transformed by current transformers and are limited to high voltage grids. Fault wave localization in medium voltage grids is still being developed. This paper presents a new real-time algorithm for the identification of travelling waves in a distribution grid using voltage signal and the short-time matrix pencil method. To obtain the secondary side voltage waveforms at substation, the model of a resistive voltage sensor based on the broadband measurements from 10 Hz to 20 MHz was developed. The tested sensor amplifies the frequencies associated with travelling waves more than utility frequency allowing for the identification. Short-circuit simulations on the IEEE 34-bus feeder was performed to test the algorithm. The developed method can detect even the waves of low amplitude.

Keywords: voltage sensor; travelling waves; instrument transformer; travelling wave fault location; medium voltage; short-time matrix pencil method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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