Closed Form Formulas for ELF Inductive Coupling Between Finite Length Wires with Earth Return
Journal Title: Carpathian Journal of Electrical Engineering - Year 2018, Vol 12, Issue 1
Abstract
This paper deals with the evaluation of the inductive coupling between an overhead finite length wire circuit and a buried wire circuit, both with earth return, in the range of Extremely Low Frequencies (ELF). In particular, the attention is focused on the key parameter for this kind of problems i.e. the per unit length (p.u.l.) mutual impedance between the two circuits. Starting from the exact formula involving a Sommerfeld’s integral, two new approximated analytical formulas, having different levels of approximation, are derived; the advantage of these formulas is that, in such a way, the p.u.l. mutual impedance is expressed only by means of elementary functions so avoiding numerical calculations of the Sommerfeld’s integral. Finally, a comparison between the two proposed formulas is made.
Authors and Affiliations
Giovanni Lucca
Keywords
Related Articles
- EP ID EP473448
- DOI -
- Views 69
- Downloads 0
Metrics for Energy Efficiency in Logistics of Freight Distribution
The paper is a study on the energy efficiency indicators that can be used for the activities in logistics of freight distribution, at the company level, as well as at macroeconomic level. There are highlighted also some...
Closed Form Formulas for ELF Inductive Coupling Between Finite Length Wires with Earth Return
This paper deals with the evaluation of the inductive coupling between an overhead finite length wire circuit and a buried wire circuit, both with earth return, in the range of Extremely Low Frequencies (ELF). In particu...
Image Steganograpfhy Tailored to Objects Contours
This article proposes a steganography method that uses all three components of an image in the RGB color space to store secret data. The order in which the image pixels are processed is not given by their position within...
Electricity Conservation and Safety Awareness Among Senior High School Students
Awareness of conservation and safety issues regarding electrical energy use among students is critical. This study has determined the level of electricity conservation and safety awareness among senior high school studen...
Structural Monitoring of Wind Turbines using Sensors Connected via UTP Cable
Unpredicted faults that may occur at the wind generators elements affect their economic operation. A promising approach that avoids these faults is the real-time vibrations monitoring. Data measured by the sensors can be...