Determining Health Index of Relay Protection at Substation on PLN UIT JBB Based on AHI, CHI, and Potential Failure as Combination Weighting

Asset management is essential in managing the life cycle of electrical equipment, including relay protection equipment at the Substation. For this reason, several tiered inspection results are needed, which are processed into a Health Index (HI) because HI is an indicator condition that can improve the decision-making process. At PLN UIT JBB, equipment performance (HI) is currently only seen from the value of the Asset Health Index (AHI), where AHI is an early warning system for equipment so that the determination of equipment replacement priorities is carried out in stages of evaluation with a long process. With the rapid development of technology, continuous progress in Substation maintenance is based on visual inspection and inspection, when energized and compiled with the results of equipment testing in off conditions. The results of secondary equipment maintenance at the Substation (both IL1, IL2, and IL3) can automatically produce a 5-level Health Index by combining the maximum quantitative AHI elements and elements of condition weighting (Condition Health Index (CHI) and Potential Failure). Furthermore, combining the results of AHI, CHI, and Potential Failure as a weighting of vulnerability at the Substation can provide Health Index results and solution recommendations for secondary equipment. So, With the value of AHI = 5, CHI = 2, and Potential Failure = 4, it is obtained that the HI value of the equipment is 5 (critical), so it is easy to determine the priority of repair and replacement of equipment on time before a Non-System Fault or blackout occurs.