Partial discharge monitoring system for switch cabinet

Abstract

The invention relates to a partial discharge monitoring system for a switch cabinet. The system comprises a plurality of field testing modules, a monitoring center module and a plurality of remote terminals; each field testing module comprises an ultrasonic measuring unit, a transient state ground radio wave measuring unit, a microprocessor and a field data server, wherein the ultrasonic measuringunit, the transient state ground radio wave measuring unit and the field data server are connected with the microprocessor; the monitoring center module comprises a database server and a WEB server,the database server is connected with the WEB server, the database server is in communication connection with the field data servers, and the WEB server is in communication connection with the multiple remote terminals. On the basis of the ultrasonic and transient state ground radio wave principle, partial discharge detection of the switch cabinet is achieved, due to the fact that the measuring units are placed inside the switch cabinet, a sensor is slightly disturbed externally, the abnormal condition inside the reaction cabinet can be truly reflected, secondly, monitoring display, analysis pre-warning and unified management of equipment are achieved, and workers can find and handle problems in time conveniently.

Description

technical field [0001] The invention relates to a switch cabinet detection technology, in particular to a switch cabinet partial discharge monitoring system. Background technique [0002] High-voltage switchgear is the most widely used and most numerous switchgear. Due to different degrees of problems in design, manufacturing, installation, operation and maintenance, etc., the accident rate is relatively high. In many types of switch cabinet accidents, insulation accidents mostly occur at voltage levels of 10 kV and above, resulting in consequences Also serious. In particular, the trolley-type switchgear has a higher insulation accident rate, and often an accident occurs in one switchgear, which affects the neighboring cabinets more prominently. Therefore, there is an urgent need to implement condition-based maintenance of switchgear, real-time online monitoring of equipment operating conditions, and determine the maintenance time and measures according to the operating st...

AI Technical Summary

Problems solved by technology

[0004] At present, the detection of partial discharge in switchgear is mainly based on the principle of electric pulse of power failure pressure type and the principle of non-contact ultrasonic wave and transient ground wave. The live detection of switchgear determines that the traditional pulse principle cannot achieve the purpose of efficient detection. , and the non-contact principle also faces the problems of detection efficiency and reliability. Secondly, due to the huge number of switchgears and their wide distribution, how to manage the switchgears in a unified way has always been a difficult problem.

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