Alternate current/direct current (AC/DC) superimposed system for detecting particles in gas insulated switchgear (GIS)
An AC/DC and microparticle technology, which is applied in the analysis of materials, instruments, etc., can solve the problems that metal particles are not well resolved, metal particles jumping phenomenon, etc.
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[0013] See figure 1 , a system for superimposing AC and DC to detect particles in GIS, the present invention is characterized in that: the system includes three parts of DC voltage doubler cylinder 1, AC voltage generator 2 and ultrasonic partial discharge testing device 3, and its connection structure is:
[0014] The DC voltage doubler cylinder 1 is composed of a high-voltage silicon stack for the DC voltage doubler cylinder, a voltage doubler capacitor 14, a filter capacitor 15, a voltage regulator 4 for the DC voltage doubler cylinder, and a step-up transformer 5 for the DC voltage doubler cylinder; The silicon stack A 13 end is connected to the water resistor A16 and one way is connected to the lead sleeve 20 through the DC conversion switch 17, and the other way is connected to the water resistance B 19 through the AC conversion switch 18, and the water resistance B 19 is connected to the AC voltage generator 2; The lead bushing 20 is connected to the high-voltage conduc...
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