Partial discharge counter for diagnosis of gas insulated...

Details Partial discharge counter for diagnosis of gas insulated... Partial discharge counter for diagnosis of gas insulated...

2011-08-30

2011-08-30

Hartman, Jr., Ronald (Department: 2121)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Electrical power generation or distribution system

C700S293000, C700S294000, C324S520000, C324S522000, C324S523000, C324S533000, C324S536000

Reexamination Certificate

active

08010239

ABSTRACT:
The present invention relates generally to a partial discharge counter for the diagnosis of a GIS. The partial discharge counter includes a partial discharge detection sensor for detecting a partial discharge. A first surge inflow prevention circuit separates a surge signal from an output terminal of the partial discharge detection sensor. A channel 1 frequency conversion module forms a low-frequency signal. A noise detection sensor detects noise. A second surge inflow prevention circuit separates a surge signal from an output terminal of the noise detection sensor. A channel 2 frequency conversion module forms a low-frequency signal. An ADC circuit generates partial discharge data and noise data. A synchronization device enables the partial discharge data and the noise data to be output in synchronization with frequency of the phase voltage. A digital signal processing unit counts a number of times the partial discharge occurs. Counting units display a count value.

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