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A new frequency-dependent surge impedance calculation method for high-voltage towers

Harid, Noureddine ORCID:, Griffiths, Huw and Haddad, Abderrahmane ORCID: 2006. A new frequency-dependent surge impedance calculation method for high-voltage towers. IEEE Transactions on Power Delivery 21 (3) , pp. 1430-1437. 10.1109/TPWRD.2005.864066

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A new technique for the calculation of the surge impedance of high-voltage towers is presented. The tower is represented by a four-terminal network for which the surge characteristics are determined by solving the transmission-line equations. The boundary conditions of voltage at the top and base of the tower are determined using a numerical solution of the electromagnetic field on a physical model of the tower. The physical model is a multiconductor geometrical model incorporating the conductors forming the main body, the slanted conductors, and the horizontal cross-arms where necessary. In the process of computing the terminal voltages and currents, soil resistivity effects are also taken into account. Surge impedance values obtained using this method are in good agreement with both published analytical formulae and field experiments.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: Boundary conditions, Conductors, Equations, Frequency, Impedance, Poles and towers, Solid modeling, Surges, Transmission lines, Voltage multiconductor transmission lines, poles and towers, transmission network calculations, electromagnetic fields, four-terminal network, frequency-dependent surge impedance calculation method, high-voltage towers, multiconductor geometrical model, transmission line equations, Characteristic impedance, impulse current, surge impedance, transmission lines, transmission towers
Publisher: IEEE Power & Energy Society
ISSN: 0885-8977
Last Modified: 01 Dec 2022 10:25

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