Key Operation-Maintenance Indicators for HV XLPE Cable Aging

With the widespread application of high-voltage cross-linking polyethylene (XLPE) cables in power systems, the issue of cable aging has become increasingly prominent, posing a direct threat to the safe and stable operation of the power grid. This paper proposes a method for constructing a strongly correlated operation and maintenance index system to address the problem of high-voltage cable aging. Firstly, cable online monitoring and operation data were extracted from the lean management platform as evaluation indicators, including service life, load current, grounding current, fault history, infrared thermography, appearance, and laying methods. Secondly, quantitative and descriptive indicators were analyzed using the fuzzy evaluation method and expert scoring method. Finally, based on correlation analysis, feature parameters strongly correlated with cable aging were selected to construct a strongly correlated operation-maintenance index system for high-voltage cable aging. This system provides a scientific basis for refined operation and maintenance of high-voltage cables, thereby enhancing reliability and extending service life.