Method of diagnosing partial discharge in gas-insulated apparatus and partial discharge diagnosing syatem for carrying out the same

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.

Description

[0001] The present invention is a divisional application of the No. 00101178.2 patent application filed on January 28, 2000, entitled "Partial Discharge Diagnosis Method and Partial Discharge Diagnosis System in Gas Insulated Devices". technical field [0002] The invention relates to a method for diagnosing partial discharges in gas-insulated installations and a system for diagnosing partial discharges for carrying out such a method. In particular, the present invention relates to a method of diagnosing partial discharge in a gas-insulated device by detecting a partial discharge signal and passing the partial discharge signal through a plurality of stages of conditional transfer for diagnosis, and a partial discharge diagnosis system implementing the method . Background technique [0003] A gas-insulated device, such as a gas-insulated switchgear installed on the main distribution device, generates partial discharges when abnormal insulation conditions occur in the device. ...

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Problems solved by technology

However, since the input layer 41 and the output layer 43 each have a lot of nodes, this makes the internal structure of the neural network structure complex, so it appears that the learning of known data is difficult to converge, local minimum values ​​are easy to appear, and require a particularly long learning time. The problem

In particular, it is difficult to achieve a practically acceptable accuracy for diagnosing

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