New aging model for 15kV XLPE distribution cables

This paper proposes a new easy to use aging model for 15 kV cross linked polyethylene (XLPE) insulated distribution cables, particularly for desert conditions. The model has been designed, based on laboratory experiments and real-time conditions of cable insulation. Two parameters, namely area of FTIR spectrum (certain wave number group) and electrical breakdown strength using needle plane geometry are used. The model is validated with the help of multiple field aged samples. The difference in sensitivity of the identified parameters for different ages complement each other and give a rough estimate of the remaining life of the cable.