A Full-Scale Experimental Validation of Electromagnetic Time Reversal Applied to Locate Disturbances in Overhead Power Distribution Lines

Zhaoyang Wang, Shaoyin He, Qi Li, Buying Liu, Reza Razzaghi, Mario Paolone, Yanzhao Xie, Marcos Rubinstein, Farhad Rachidi

Research output: Contribution to journalArticleResearchpeer-review

Abstract

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.

LanguageEnglish
Number of pages9
JournalIEEE Transactions on Electromagnetic Compatibility
Issue number99
DOIs
StateAccepted/In press - 2017

Keywords

  • Distribution lines
  • disturbance location
  • electromagnetic time reversal (EMTR)
  • electromagnetic transients (EMTs)
  • power system protection

Cite this

Wang, Zhaoyang ; He, Shaoyin ; Li, Qi ; Liu, Buying ; Razzaghi, Reza ; Paolone, Mario ; Xie, Yanzhao ; Rubinstein, Marcos ; Rachidi, Farhad. / A Full-Scale Experimental Validation of Electromagnetic Time Reversal Applied to Locate Disturbances in Overhead Power Distribution Lines. In: IEEE Transactions on Electromagnetic Compatibility. 2017 ; No. 99.
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A Full-Scale Experimental Validation of Electromagnetic Time Reversal Applied to Locate Disturbances in Overhead Power Distribution Lines. / Wang, Zhaoyang; He, Shaoyin; Li, Qi; Liu, Buying; Razzaghi, Reza; Paolone, Mario; Xie, Yanzhao; Rubinstein, Marcos; Rachidi, Farhad.

In: IEEE Transactions on Electromagnetic Compatibility, No. 99, 2017.

Research output: Contribution to journalArticleResearchpeer-review

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