Electrical Parameters

Compaction of overhead power lines influences, inter alia, the surface gradient of the conductor, resulting in corona-related effects. These include Audible Noise (AN) and the Radio Interference (RI). The Electric Field (EF) and Magnetic Field (MF) at ground level are also impacted. The regulatory limits for these parameters can become the governing factor for a compact line design. Additionally, for AC overhead power lines, compaction also affects the Surge Impedance Loading which impacts the ability of the line to transmit power. This chapter analyses how the design decision (e.g. conductor size, bundle configuration, phase to phase spacing, height, etc.) influence the electrical parameters that can affect the design limits and the power flow in AC lines.