Evaluation of Lightning Induced Voltage due to the Effect of Design Parameters on Medium Voltage Distribution Line

Abstract

This paper investigates the effect of design parameters on the induced voltages on a distribution power line. This investigation is based on perfect ground conductivity, single stroke lightning and lightning without branches. The design of the parameters includes, d, the striking distance of the lightning, h, the height of the conductor, and r, the diameter of the conductor, all of which are elements that produce the variations in the induced voltage on a distribution power line with respect to a vertical or an inclined lightning channel. Thus, the outcome of this investigation can act as a guide for utility companies or other power engineers in order to plan an appropriate protection scheme for a distribution power line.

Influence of Lightning Current Parameters and Earthing System Designs on Tower Footing Impedance of 500 kV Lines

“…Up to the authors' knowledge, despite the fact that numerous researchers have proposed solutions to these problems, there are not many analyses available based on the actual design and implementation at 500 kV towers, which are significantly different in terms of topography, types of soil, earthing arrangements including the number of electrodes and how the impact of earthing design varies in different soil conditions on earthing system behaviour during a high current. In general there are numerous guidelines and technical materials on lightning performance studies available for both transmission [34][35][36][37][38] and distribution lines [39][40][41]. In fact, the issues of tower earthing systems and their effect on the line's lightning performance i.e., low frequency versus high frequency responses, soil ionisation and the frequency dependence of soil parameters, were among the points of discussion in the newly published CIGRE TB 839 [42], that require more studies based on real measurements and data to be carried out.…”

Impact of Earthing System Designs and Soil Characteristics on Tower Footing Impedance and Ground Potential Rise: A Modelling Approach for Sustainable Power Operation

“…The proposed method by Pappas et al [19] based on the autoregressive moving average (ARMA) model, via off-line fitting on the actual data using the corrected Akaike information criterion (CAIC), for instance, provided the solution to deal with variation of the earthing resistances. In general, many guidelines and technical documents on lightning performance studies are available both for the transmission [9,11,[50][51][52] and distribution lines [53,54]. Therefore, this paper intends to complement and focus on the following:…”

On the Lightning Induced Voltage Along Overhead Power Distribution Line

“…For the direct effect, the lightning directly strikes the power network while for the indirect effect the lightning strikes the surface of the ground or any object around a power line, and the lightning induces a voltage due to coupling between the lightning electromagnetic fields and the power line. In this paper, the indirect effect of lightning is studied when the lightning strikes the ground around a power line [6][7][8][9]. Several studies have been undertaken to evaluate the effect of the lightning induced voltage on power networks which is dependent on the wave shape of the current at different heights along the lightning channel, the lightning field components and the coupling model applied [8,[10][11][12][13][14][15][16][17].…”