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Detecting Grounding Grid Orientation: Transient Electromagnetic Approach

Department of Electrical and Computer Engineering, COMSATS University Islamabad, Wah Campus, Wah 47040, Pakistan
Department of High Voltage and Insulation Technology, Chongqing University, Chongqing 400044, China
College of Computer Science and Engineering, University of Ha’il, Ha’il 2440, Saudi Arabia
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(24), 5270;
Received: 7 November 2019 / Revised: 29 November 2019 / Accepted: 2 December 2019 / Published: 4 December 2019
The configuration is essential to diagnose the status of the grounding grid, but the orientation of the unknown grounding grid is ultimately required to diagnose its configuration explicitly. This paper presents a transient electromagnetic method (TEM) to determine grounding grid orientation without excavation. Unlike the existing pathological solutions, TEM does not enhance the surrounding electromagnetic environment. A secondary magnetic field as a consequence of induced eddy currents is subjected to inversion calculation. The orientation of the grounding grid is diagnosed from the equivalent resistivity distribution against the circle perimeter. High equivalent resistivity at a point on the circle implies the grounding grid conductor and vice versa. Furthermore, various mesh configurations including the presence of a diagonal branch and unequal mesh spacing are taken into account. Simulations are performed using COMSOL Multiphysics and MATLAB to verify the usefulness of the proposed method. View Full-Text
Keywords: grounding grid; magnetic field; orientation; transient electromagnetic method (TEM) grounding grid; magnetic field; orientation; transient electromagnetic method (TEM)
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MDPI and ACS Style

Qamar, A.; Ul Haq, I.; Alhaisoni, M.; Qadri, N.N. Detecting Grounding Grid Orientation: Transient Electromagnetic Approach. Appl. Sci. 2019, 9, 5270.

AMA Style

Qamar A, Ul Haq I, Alhaisoni M, Qadri NN. Detecting Grounding Grid Orientation: Transient Electromagnetic Approach. Applied Sciences. 2019; 9(24):5270.

Chicago/Turabian Style

Qamar, Aamir, Inzamam Ul Haq, Majed Alhaisoni, and Nadia N. Qadri. 2019. "Detecting Grounding Grid Orientation: Transient Electromagnetic Approach" Applied Sciences 9, no. 24: 5270.

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