Overhead line design
Overhead lines (OHLs) comprise one of the major power engineering technologies, and although the basic principles of OHL design were mostly established at the dawn of electrical power systems, it is a technology that is subject to ongoing development and change. Within this context, the construction of a new OHL remains both complex and challenging. This chapter will examine and summarise salient requirements of OHL design covering the following: 1. OHL design over-view 2. Tower, pole and foundation design 3. Conductor system design 4. insulators and OHL fittings design 5. Tower earth-wires and earth resistance 6. Conductor tension and sag 7. Tower height and spacing 8. OHL design philosophy 9. Routing and siting design 10. OHL asset replacement.
Overhead line design, Page 1 of 2
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