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Journal of Technology and Policy in Energy and Electric PowerJournal of Technology and Policy in Energy and Electric Power

The transmission system plays a crucial role in connecting generation centers with population growth centers. In the operation of the transmission system, disturbances and anomalies can damage the reliability of electricity distribution. Hotspots are temperature abnormalities occurring at connection points, causing energy losses and potential equipment damage. This study focuses on repairing hotspots on the 500kV South Bandung – Mandirancan transmission line T.168, specifically at a link adjuster, an unusual location for a hotspot. The OhmStick Plus, a tool for measuring current and resistance, was used to identify the problem and justify normal conditions after repair. Using the live-line maintenance method (PDKB) eliminates the need for scheduled power outages, especially in emergency situations.

The study successfully utilized the OhmStick Plus to identify and address a hotspot anomaly on the 500kV South Bandung – Mandirancan transmission line.The hotspot was found to be caused by current diversion due to resistance differences in jumper clamps, leading to heating in the link isolator.By cleaning and tightening the jumper clamps, the resistance was balanced, eliminating the hotspot and restoring normal operating conditions.This approach demonstrates the effectiveness of live-line maintenance methods in preventing potential equipment failure and maintaining reliable power transmission.

Further research should investigate the long-term effectiveness of the PDKB method in preventing hotspot recurrence, considering various environmental factors and load conditions. A study could be conducted to develop a predictive maintenance model using machine learning algorithms, analyzing thermovision data and electrical parameters to identify potential hotspots before they develop into critical issues. Additionally, research is needed to optimize the design of jumper clamps and link adjusters to minimize resistance and current diversion, thereby reducing the likelihood of hotspot formation and enhancing the overall reliability of high-voltage transmission lines. These investigations will contribute to improved asset management strategies and a more resilient power grid.

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