Topology Considerations in Transmission Line Design: India's hilly terrain illustrates the necessity of determining phase conductor spacing at the design stage

摘要

Normally, the horizontal and vertical spacing between the phase conductors on a transmission line is decided by the minimum clearances required between the conductors and the supporting towers. In practice, for insulator strings installed on suspension towers and the jumper loops used on the tension towers, two different swing angles with corresponding conductor-tower clearances are normally specified. Additionally, phase conductor spacing is also affected by the following factors.