Enveloping Transmission Tower Conductor Line 150 kV Siantan-Sei Raya Kalimantan Using Rubber Silicon
Prasetyo Adi Wibowo1, , Rasgianti 2 , and Bernaded Oka A3

1,2,3PLN Reaserch Institute, 102 Duren tiga Street Jakarta, Indonesia

Abstract

This study aims to determine the feasibility of the tower structure against the enveloping of silicon rubber. The analysis was done by modeling using MS Tower software, by comparing the stress ratio of the existing conditions with the addition of silicon rubber. Tower geometry data is taken based on field measurements because as built drawings are not available. Load combinations simulated with conditions; a) Normal conditions (service conditions); b) Variation of two broken lead wires; and c) normal combination with wind. Wind loads speeds of 10 mph, 15 mph and 20 mph and are simulated from different directions. The results modeling on MS tower, The addition of silicon rubber obtained an increase in the stress ratio on the tower structure by 0.035 compared to before the addition (existing conditions). The greatest stress ratio is obtained when normal load conditions are combined with wind. At a wind speed of 10 mph the tower condition is safe because it is still far from the permit voltage limit. Furthermore, when the wind speed is 15 mph, the voltage ratio that occurs begins to approach the value of 1 (almost close to the permit voltage). While at a wind load of 20 mph, an indication of failure on the tower begins, which is shown from the results of the analysis having a voltage ratio> 1. Based on these results, the enveloping of silicon rubber can be carried out with wind conditions smaller than 20 mph.

Keywords: transmission tower, silicon rubber, MS Tower

Topic: Civil Engineering