Method of diagnosing partial discharge in gas-insulated apparatus and partial discharge diagnosing syatem for carrying out the same
First Claim
1. A partial discharge diagnosing system for diagnosing a partial discharge produced in a gas-insulated apparatus, said partial discharge diagnosing system comprising:
- a partial discharge signal detector for detecting a partial discharge signal representing a partial discharge produced by the gas-insulated apparatus;
a signal analyzer for receiving the partial discharge signal detected by the partial discharge detector and analyzing the partial discharge signal;
a diagnostic unit for determining a cause of said partial discharge on the basis of results of analysis made by said signal analyzer, provided with a diagnostic means for multiple conditional branching; and
a display unit for displaying said results of diagnosis;
wherein a diagnostic means of said diagnostic unit makes conditional branching to one of a plurality of second diagnostic means according to result of diagnosis made by a first diagnostic means, and obtains a result of diagnosis made by the second diagnostic means.
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Abstract
The present invention provides a method of diagnosing a partial discharge in a gas-insulated apparatus and a partial discharge diagnosing system for carrying out the same to achieve highly accurate diagnosis through the detection of a partial discharge signal and diagnosing the partial discharge signal through multiple conditional branching. The partial discharge diagnosing system of the present invention comprises: a partial discharge signal detector for detecting a partial discharge signal representing a partial discharge produced in the gas-insulated apparatus, a signal analyzer for receiving the partial discharge signal detected by the partial discharge detector and analyzing the partial discharge signal, a diagnostic unit for determining a cause of the partial discharge on the basis of results of analysis made by the signal analyzer, and a display unit for displaying results of diagnosis. The diagnostic unit is provided with a diagnostic means to make multiple conditional branching to a plurality of second diagnostic means according to result of diagnosis made by a first diagnostic means, and obtains a result of diagnosis made by the second diagnostic means, thereby achieving highly accurate diagnosis by detecting the partial discharge signal and subjecting the partial discharge signal to multiple conditional branching.
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Citations
13 Claims
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1. A partial discharge diagnosing system for diagnosing a partial discharge produced in a gas-insulated apparatus, said partial discharge diagnosing system comprising:
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a partial discharge signal detector for detecting a partial discharge signal representing a partial discharge produced by the gas-insulated apparatus;
a signal analyzer for receiving the partial discharge signal detected by the partial discharge detector and analyzing the partial discharge signal;
a diagnostic unit for determining a cause of said partial discharge on the basis of results of analysis made by said signal analyzer, provided with a diagnostic means for multiple conditional branching; and
a display unit for displaying said results of diagnosis;
wherein a diagnostic means of said diagnostic unit makes conditional branching to one of a plurality of second diagnostic means according to result of diagnosis made by a first diagnostic means, and obtains a result of diagnosis made by the second diagnostic means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of diagnosing a partial discharge produced in a gas-insulated apparatus, said method comprising the steps of:
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detecting a partial discharge signal representing a partial discharge produced by the gas-insulated apparatus by a partial discharge signal detector;
receiving said partial discharge signal detected by the partial discharge detector and analyzing the partial discharge signal by a signal analyzer;
determining a cause of the partial discharge on the basis of results of analysis made by said signal analyzer; and
displaying results of diagnosis on a display unit;
wherein the diagnostic unit is provided with diagnostic means that carries out multiple conditional branching, said diagnostic means makes conditional branching to one of a plurality of second diagnostic means according to the result of diagnosis made by a first diagnostic means, and obtains results of diagnosis sequentially made by said second diagnostic means, said diagnostic means executes first a diagnostic operation for discriminating the partial discharge signal detected by the partial discharge signal detector between the partial discharge signal produced in said gas-insulated apparatus and external noise signal. - View Dependent Claims (13)
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Specification