Detailed design of an EPZ 315 kV tower and on-site testing

Design of a rigid double-drop tower model never seen before in Quebec.

Hydro-Québec wished to develop a 315 kV double-drop tower that could be used in areas where space is limited. Prior solutions that involved using three towers based on a specific configuration were not suitable for some projects with space constraints. CIMA+ was tasked with producing the detailed design of this type of tower that had never been used in the province of Quebec.

The new tower is comprised of a total of 12 cross-arms and a set of 6 vertical cables used to connect the two primary circuit conductors to the double-drop circuit conductors, either at the lower or upper cross-arm level. Furthermore, analysis also covered all cables attached to the tower, in order to include their impact on the distribution of internal forces.

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