Amplitude Values of the Incident and Reflected Waves in a Double-Circuit Power Transmission Line

Abstract

The transmission of electric energy through the power transmission lines (PTL) is provided by the waves of the electromagnetic field. For a double-circuit PTL the transmission of electric power is provided by six pairs of waves of the electromagnetic field: six incident waves and six reflected ones. The amplitudes of these waves determine the magnitude of voltages and currents in the PTL. The scheme of the amplitude values distribution of the incident and reflected waves of the electromagnetic field on a linear wire of a homogeneous section of a double-circuit PTL has been formed. It indicates that the magnitudes of the amplitude values of the electromagnetic field waves determine the integration constants. Due to the distribution scheme of the wave amplitude values of the electromagnetic field on a linear wire of a double-circuit PTL it is clear that the magnitudes of stresses and currents in this wire are significantly influenced by the neighboring current-carrying parts. This scheme provides a real opportunity to determine the numerical values of integration constants. With the help of these magnitudes in case of the known constants of the electromagnetic waves propagation through the linear wires of the PTL and the corresponding wave resistances, it is possible to obtain an idea of the amplitude values of the incident and reflected waves through the entire PTL.