Research On Warning Methods Of Capacitance Equipments Based On Matter Element Analysis

Capacitance equipments are the important power transmission and transformation equipment, its ability to secure stable operation concerning people’s livelihood. Currently, applied capacitance equipments fault diagnosis system cannot predict fault development way and speed for the equipment, which has no malfunctions or inconspicuous fault symptoms, so the study of capacitance equipment fault warning has theoretical significance and practical value. In this paper, we take CT for example research capacitive equipments common damp fault and other fault. And the extension diagnosis method of capacitive equipment’s faults based on matter-element model was advanced. The method was proved to be successful by experiment.According to capacitance equipments fault characteristic monitoring needs, this paper, based on virtual instrument technique, developed a set of high-precision capacitance equipments insulating properties test system. This testing system, used the harmonic analysis method to calculate the dielectric dissipation factor; through test and running, the system was confirmed that it was reliable, stable and had an accurate data collection. And using this measuring system, different types of current transformer were used for experiment in high voltage laboratory. Through experiments we get same data about dielectric dissipation factor, leakage current, Capacitance,resistive current and so on. The experimental data are processed, so as to establish different moisture level damp of matter element model and comprehensive early warning model. And the extension diagnosis method of capacitive equipment’s faults based on matter-element model was advanced. The method was proved to be successful by experiment. It’s turn out that the model can conveniently and accurately used for capacitance equipments early warning. Early warning method is convenient and fast, warning result is true and reliable.