This project involves design of compact 220 kV double circuit transmission towers using optimised conductor arrangements to reduce right of way requirements and environmental impact. The initial vertical formation design required two vertical interphase spacings per circuit, resulting in larger structural envelopes.

An alternative delta formation was developed to reduce interphase spacing to one per circuit. Intermediate tie members were introduced at X arms to achieve optimal conductor clearances while maintaining electrical safety. The revised configuration significantly reduced structural quantities and footprint.

The compact design was particularly suited for environmentally sensitive areas, including mangrove filled regions, where minimising land disturbance and forest clearance was critical.

TCE's Scope