Wire antenna versus modified transmission line approach to the transient analysis of grounding grid

Cavka, Damir; Harrat, Basma; Poljak, Dragan; Nekhoul, Bachir; Kerroum, Kamal; Drissi, Khalil El Khamlichi

doi:10.1016/j.enganabound.2011.05.002

Cited by 19 publications

(18 citation statements)

References 12 publications

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“…Transient analysis of grounding systems has been extensively studied using the electric circuit models [3], the transmission line (TL) models [4] - [7] and the antenna theory [8] - [12]. The circuit theory approaches do not predict surge propagation delay and are considered over simplified to limit the accuracy of analysis.…”

Section: Introductionmentioning

confidence: 99%

Break-Point Diagnosis of Grounding Grids Using Transient Electromagnetic Apparent Resistivity Imaging

Hou

et al. 2015

IEEE Trans. Power Delivery

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Faults in the grounding grid are hidden danger to the safety of power system and cause significant economic loss every year. This paper presents a new means to locate faults in grounding grids using the transient electromagnetic imaging method. The method compares the distribution characteristics of the equivalent resistivity of underground covered by grids for no fault case and those with break points. We describe why and how the proposed method can be used for break point diagnosis of grounding grids. Simulation was performed using Ansoft FEM package, and a field experiment was conducted to verify the effectiveness of the proposed method. This study provides a practical means for break point diagnosis with no requirement of power shut down or soil excavation. Moreover, the proposed method does not require the design drawings of grounding grids.

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Section: Introductionmentioning

confidence: 99%

Break-Point Diagnosis of Grounding Grids Using Transient Electromagnetic Apparent Resistivity Imaging

Hou

et al. 2015

IEEE Trans. Power Delivery

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“…The treatment of wire junctions is related to the Kirchhoff's current law forcing the continuity of currents and charges at the junction [4]. The input impedance of the grounding system is given by: …”

Section: Bem Procedures For Pocklington Equation For Buried Wiresmentioning

confidence: 99%

“…Note that the current source excitation I g is taken into account as a forced boundary condition at a certain node i of the grounding system [4,7]:…”

Section: Bem Procedures For Pocklington Equation For Buried Wiresmentioning

confidence: 99%

“…If one deals with the frequency domain formulation the related transient response is evaluated via the Inverse Fourier Transform (IFT). An important feature of the integral equation approach is the use of isoparametric elements for an efficient treatment of curved wires, which is not readily the case with a transmission line approximation [4]. On the other hand, the most serious drawback of the antenna theory is relatively long computational time required for the analysis of complex structures [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Such a formulation is usually based on a corresponding set of the Pocklington integral equations [3,4]. If one deals with the frequency domain formulation the related transient response is evaluated via the Inverse Fourier Transform (IFT).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the use of isoparametric elements for BEM modeling of arbitrarily shaped thin wires in electromagnetic compatibility applications

Poljak

Dorić

Cavka

2012

WIT Transactions on Modelling and Simulation

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The paper deals with the frequency domain Galerkin-Bubnov scheme of the Indirect Boundary Element Method (GB-IBEM) for the solution of the Pocklington integral equations for arbitrary thin wire configurations. The presence of a lossy media is taken into account by using both the reflection coefficient approximation and the rigorous Sommerfeld integral formulation. Some illustrative computational examples related to power line communication systems (PLC) and grounding systems are presented.

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Transient Analysis of Grounding Systems

2018

Computational Method in Electromagnetic Compatibility

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Wire antenna versus modified transmission line approach to the transient analysis of grounding grid

Cited by 19 publications

References 12 publications

Break-Point Diagnosis of Grounding Grids Using Transient Electromagnetic Apparent Resistivity Imaging

Break-Point Diagnosis of Grounding Grids Using Transient Electromagnetic Apparent Resistivity Imaging

On the use of isoparametric elements for BEM modeling of arbitrarily shaped thin wires in electromagnetic compatibility applications

Transient Analysis of Grounding Systems

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