Diagnosis system of high-voltage switch cabinet partial discharge signal

Abstract

The invention provides a diagnosis system of a high-voltage switch cabinet partial discharge signal, and belongs to the technical field of the electrical testing. The problem that the existing methodhas large subjectivity and boundedness and is unreliable. Each detection sensor group is connected with a signal input end of a signal preprocessing module, the signal output end of the signal preprocessing module is connected with the signal input end of an ADC processing module; the signal output end of the ADC processing module is connected with the signal input end of a first wireless transceiving module; the first wireless transceiving module is wirelessly connected with the second wireless transceiving module, the signal output end of the second wireless transceiving module is connectedwith the signal input end of a processing module; a first signal output end of the processing module is connected with a first signal input end of a display module; a second signal output end of the processing module is connected with the signal input end of a storage module, a third signal output end of the processing module is connected with the signal input end of a diagnosis module, the signaloutput end of the diagnosis module is connected with the second signal input end of the display module, and a fifth signal output end of the processing module is connected with the signal input end of an alarm module.

Description

technical field [0001] The invention relates to the technical field of electric power testing, in particular to a diagnostic system for partial discharge signals of a high-voltage switch cabinet. Background technique [0002] High-voltage switchgear is a direct device that supplies power to distribution networks or users, and is widely used in power systems. Because it is directly related to the power supply, the economic loss and social loss caused by the power outage caused by the failure of the high-voltage switchgear are very large. Due to the narrow space, many parts, complex structure and small insulation distance in the high-voltage switchgear, defects are more likely to occur, which brings hidden dangers to the safe operation of the high-voltage switchgear. Long-term operation of high-voltage switchgear, the components in the cabinet are affected by strong electric fields and thermal effects, which will cause insulation performance to decline or even deteriorate, re...

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Problems solved by technology

[0003] At present, when diagnosing the partial discharge signal of the high-voltage switchgear, it is realized by experienced staff. Specifically, the staff use a single partial discharge detection device to detect the partial discharge of the switchgear, and use a single partial discharge signal to detect Judging the insulation quality of high-voltage switchgear and obtaining the type of partial discharge signal, this method not only has great subjectivity and limitations, but also has no reliability

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