Endowing a configurable and computationally light underground cable temperature prediction algorithm with real-time rating capabilities

A computationally light temperature prediction algorithm for underground cables utilizing a thermal circuit for the cable in its installed environment was developed some years ago. The algorithm lacked rating abilities, however, and this paper indicates how this particular algorithm and more significantly, a dramatic simplification of the algorithm, can be so endowed. Without temperature measurement in or on the cable of concern the extension is trivial, but with temperature measurement, the methodology succeeds in accounting for variation in ambient temperature, which can include the effect of external heat sources, and goes some way towards accounting for moisture content variation and moisture migration.