Optimal Determination of Tower Height on a Continuous Transmission Line

The weight and span distance of the transmission line between the two towers of an overhead conductor induces sag. For the same level of elevation, the two towers stand symmetrically. Nonetheless, in many cases, these two towers have differences in the elevation afflicting the sag to curve to the lower tower height. This paper utilizes a parabolic model to obtain a conductor curve along with the span distance between the two towers. Besides, this method complies with the clearance distance standards of all objects (buildings, trees, or other infrastructures) under the overhead conductor. The outcome of this model is to generate the span distance and heights of the two towers. Summing up, this paper applied the model to a case study of 94 installed towers in South Kalimantan, Indonesia. It has accurately calculated the tower heights to optimize sag.