METHOD AND DEVICE FOR THE PROTECTION OF ELECTRICAL BREAKDOWN OF ELECTRICAL EQUIPMENT with an insulating gap and the electrode surface ISOLATED EACH OTHER liquid dielectrics

摘要

1. A method for protecting from electrical breakdown of electrical equipment having an insulating gap and the electrode surfaces are isolated between dielectric liquid, characterized in that, in order to simplify the process and to ensure efficiency in the decision to disconnect equipment from the load voltage, using a continuous monitoring of the phenomena predprobivnymi occurring immediately before the electric breakdown on the electrode surface in the form of gas bubbles, and arrayed microstreams aryazhennyh moles (micelles - "dark entities"), upon occurrence of which generates a command for reduction of the load voltage or disabling equipment. ! 2. A method for protecting from electrical breakdown of electrical equipment according to claim 1, characterized in that for the detection of the moment of formation predprobivnyh phenomena continuously scan the surface of the electrodes of the laser beam, the frequency and power of the radiation which recorded the occurrence and growth of gas bubbles and "dark markings" on the electrode surface a layer of dielectric fluid, the signals of reflected laser beams in a raster form a current image, it is compared with a reference way, which is calculated by averaging each group preceding the current image. ! 3. A method for protecting from electrical breakdown of electrical equipment according to claim 1, characterized in that, to ensure continuous validation facts indicate the occurrence of phenomena predprobivnyh use electrode-reference surface which is placed within the raster of the laser beam and is connected to the working electrode