A real-time prediction procedure of the state of an electrical distribution system

An innovative digital procedure for real-time prediction of the state of an electrical distribution system is described. The method can promptly identify any change in the impedance values of distribution networks. When changes are slow, diagnostic processes will be carried out, whereas when very quick changes occur protection processes will be activated. The diagnostic process can be usefully adopted to schedule effective, economic maintenance. The proposed method is able to detect a number of anomalies, even though this paper is especially targeted at the check of phase-to-phase insulation levels.