Abstract
The paper presents measured results of corona wave-deformation on an 1/4. 4 scaled-down test line of a 77 kV system with various boundary conditions corresponding to a substation. The measured results have shown an increase of the phasewire voltage at the receiving-end under a certain boundary condition, while the ground-wire voltage is always decreased by the corona wave-deformation. The phenomenon is theoretically investigated, and it has been made clear that the increase is, in principle, caused by heavier attenuation of a traveling-wave on a ground wire than that on a phase wire, and negative reflection of the traveling-wave from the ground wire to the phase wire. The condition of the voltage increase has been theoretically derived.
