ACCC Conductors for Reconductoring 150 kV Transmission Line in East Kalimantan to Support Indonesia's New Capital Infrastructure

Many industries and economic centers will emerge in East Kalimantan as a candidate for the prospective new capital city. To support this, the current-carrying value in the Mahakam System has to accommodate it. There are several transmission lines in the backbone lines that still use a single ACSR 240 mm2. One of them is the Harapan Baru-Bukuan. The most cost-effective solution is to increase the thermal power transfer capacity by adopting the Aluminum Conductor Composite Core (ACCC). This study aims to analyze the use of the ACCC Lisbon in East Kalimantan. In addition to helping the development of the electric network in East Kalimantan instead of constructing a new transmission line, the ACCC Lisbon has good performance in responding to the influence of temperature rise and wind pressure. The sagging value is better than ACSR 240 mm2 with an average difference of 2.4 meters, so that the clearance area can be fulfilled properly. Furthermore, based on the tower structural analysis, the existing tower can still support the ACCC Lisbon load because the tensile strength of the conductor is smaller than the maximum working tensile of the tower and the difference in vertical load is not significant. The reconducting process's success also depends on the handling method. Proper handling is organized from storage to stringing so that the ACCC Lisbon failures can be avoided. The doubling of current capacity with restringing conductors on existing towers can be accomplished to support the construction of the prospective new capital of Indonesia.