The Experience of Inspection of a Technical Condition of the HV Equipment on Substation by a Method of Registration of the Own Electromagnetic Radiations

摘要

The perspective modern method of the early equipment diagnostics is the analysis of the own electromagnetic radiations (EMR) on the wide range of frequencies. The experience of application of the method is stated. The inspections of the HV equipment EMR were carried out in ranges of frequencies 40-460 MHz. On an offered technique more than 200 phases of the HV transformers of a class 110, 220, and 500 kV were surveyed. The examples of results of supervision of spectra are submitted in the three-dimensional image in coordinates: frequency - time of supervision - intensity of a spectrum. Simple criterion of a technical condition of units of equipment is the excess of a level own EMR above a level of a background EMR.