Switchgear thermal defect monitoring system, analysis method and comprehensive measuring control device thereof

Abstract

The invention discloses a switchgear thermal defect monitoring system, an analysis method and a comprehensive measuring control device thereof. The system comprises an information detecting module, acommunication module and a data processing module, wherein the information detecting module comprises a plurality of data acquisition units at a low-voltage side. The data processing units are respectively mounted in switchgears which are connected with the same bus. The data acquisition unit comprises at least four air temperature detecting loops and at least one current detecting loop. A first air temperature detecting loop is used for an ambient temperature outside the switchgear. A second air temperature detecting loop, a third air temperature detecting loop and a fourth air temperature detecting loop are used for detecting the air temperature of each compartment of the corresponding switchgear. The current detecting loop is used for detecting the load current of the switchgear. Detected data are transmitted to the data processing module through the communication module. The data processing module determines whether a thermal defect of the switchgear exists based on the data transmitted from the communication module. The system can further used for monitoring multiple defects of the switchgear.

Description

technical field [0001] The invention relates to the field of on-line monitoring of switch cabinets, in particular to the discovery and monitoring of thermal defects that may cause accidents due to overheating of switch cabinets due to poor contact. Background technique [0002] High-voltage switchgear is commonly used equipment in power supply systems. Its structure usually includes: busbar room, circuit breaker room, cable room, secondary room and its internal components. Due to manufacturing quality and equipment aging, various defects and failures will appear inside the switchgear during operation, such as overheating, insulation aging, discharge, flashover, mechanical jamming, action failure and other defects. These defects often end up developing into serious switchgear accidents. Among the various defects of the switchgear, the overheating caused by the thermal defect of poor contact is the most troublesome problem in the power field. At present, there are very few a...

AI Technical Summary

Problems solved by technology

[0007] This (invention) provides a thermal defect monitoring device with a simple structure suitable for popularization, which can avoid the risk of temperature and current measurement in a high-voltage environment, and solve problems such as incorrect monitoring results that may be caused by the prior art

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