METHOD FOR DIAGNOSING ELECTRIC SWITCHING DEVICE Russian patent published in 2016 - IPC G01R31/00 

FIELD: measuring equipment.

SUBSTANCE: invention can be used for control of serviceability of electric switching devices, mainly of high-voltage automatic circuit breakers. Disclosed is a diagnostic technique for electric switching device based on measuring function of the movable contact during connection and/or disconnection of the diagnosed and deciding on the state of the apparatus. Movable contact is taken dependence of acceleration time are selected on the dependence of high-frequency component to generate several frequency bands change of high-frequency component. From the obtained frequency bands using neural networks-“analysers” and informative parameter K_q is separated as diagnostic signs of the most informative frequency bands. Then the obtained values of the selected frequency ranges of the measured acceleration function of time of the movable contact, the most informative diagnostic features, is fed to the input of the neural network-“expert”, which decides on the character of failure of switching device.

EFFECT: technical result consists in possibility of automatic diagnostics of high-voltage breakers with indication of cause of failure.

1 cl, 5 dwg