Implementation of a Method for Monitoring High-Voltage Suspended Insulation Based on Electromagnetic Registration of Partial Discharge Signals

the insulation of electrical equipment mainly determines the long-term and cost-effective operation of the electrical system. Therefore, the diagnosis of high-voltage dielectric elements is an urgent task for energy companies. The paper proposes a method for diagnosing dielectric elements based on the dynamic registration of electromagnetic radiation. The method involves the periodic measurement of a set of diagnostic parameters necessary for a reliable assessment of the operating state of high-voltage dielectric equipment and their comparison with reference values. The proposed method for diagnosing high-voltage dielectric elements has been tested in the diagnosis of high-voltage insulators. We have developed non-contact remote devices installed on each phase wire, measuring diagnostic parameters with subsequent computer processing of the accumulated information signals. The analysis of the set of necessary parameters allows us to draw a conclusion about the degree of operability of dielectric elements. A comprehensive monitoring system for high-voltage dielectric elements does not require the decommissioning of insulators. The processing of partial discharge signals ends with constructing the following characteristics: the amplitudes and the number of pulses in each phase interval and the distribution of the number of pulses over the amplitudes. The method allows one to control the technical condition of high-voltage dielectric elements without stopping the technological process of electric power transmission.