A full-scale experimental validation of electromagnetic time reversal applied to locate disturbances in overhead power distribution lines

Wang, Zhaoyang (Electromagnetic Compatibility Laboratory and the Distributed Electrical Systems Laboratory, Swiss Federal Institute of Technology Lausanne, Lausanne 1015, Switzerland) ; He, Shaoyin (State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China) ; Li, Qi (Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China) ; Liu, Buying (State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China) ; Razzaghi, Reza (Department of Electrical and Computer Systems Engineering, Monash University, Melbourne, N.S.W. 3800, Australia) ; Paolone, Mario (Electromagnetic Compatibility Laboratory and the Distributed Electrical Systems Laboratory, Swiss Federal Institute of Technology Lausanne, Lausanne 1015, Switzerland) ; Xie, Yanzhao (State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China) ; Rubinstein, Marcos (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Rachidi, Farhad (Electromagnetic Compatibility Laboratory and the Distributed Electrical Systems Laboratory, Swiss Federal Institute of Technology Lausanne, Lausanne 1015, Switzerland)

Electromagnetic time reversal (EMTR) has emerged as a promising technique to locate disturbances in power grids, thanks to its location accuracy and robustness against parameters uncertainties. Furthermore, in a reflective medium, like the one of a power network, it has been shown that the method requires no more than one single observation point. In this paper, we present an experimental validation of EMTR to locate disturbances in real power networks. The validation is performed on a full-scale unenergized 677-m-long, double-circuit 10-kV overhead distribution line. The disturbance is emulated by a voltage pulse injected between one of the line conductors and the ground using a high-voltage pulse generator. The frequency spectrum of the injected voltage pulse is specified such that the originated electromagnetic transients are compatible with those of power line faults, lightning, and conducted intentional electromagnetic interferences. The transient currents generated by the emulated disturbance are measured at one end of the line, considering two different line configurations. According to the EMTR technique, the measured signals are time reversed and back injected into the system that, in our case, is a simulated model of the considered distribution line. More specifically, it is represented by a constant-parameter line model implemented within the EMTP-RV simulation environment. For both cases, the disturbance is accurately located, and the phase of the circuit at which the pulse was injected is also identified.


Keywords:
Article Type:
scientifique
Faculty:
Ingénierie et Architecture
School:
HEIG-VD
Institute:
IICT - Institut des Technologies de l'Information et de la Communication
Subject(s):
Ingénierie
Date:
2018
Pagination:
9 pages
Published in:
IEEE Transactions on Electromagnetic Compatibility
Numeration (vol. no.):
pp. 1-9
DOI:
ISSN:
0018-9375
Appears in Collection:

Note: The status of this file is: restricted


 Record created 2018-05-29, last modified 2018-12-20

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