| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform high-precision diagnosis by detecting a partial discharge signal, branching the signal into multiplex stages conditionally and performing diagnosis. SOLUTION: In a partial discharge diagnosing apparatus for gas-insulated switchgears composed of partial discharge signal detectors 4a, 4b, 4c for detecting partial discharge signals generated by gas insulators, a signal analyzer 7 which receives the detection signals of the signal detectors and analyzing partial discharge signals, a diagnosing apparatus 8 which receives the analysis result of the analyzer and diagnoses the cause of generation of a partial discharge, and a display 9 for displaying the diagnosis result, the diagnosing apparatus is provided with diagnosing means which are conditionally branched into multiple stages. Conditional branching into one out of a plurality of second diagnosing means is performed according to the diagnosis result of a first diagnosing means, and a diagnosis result by the second diagnosing means is obtained.</p> |
