Transformer ignition point monitoring and fire extinguishing method and system based on infrared technology

Abstract

The invention discloses a transformer ignition point monitoring and extinguishing method and system based on infrared technology. Each surface of a transformer can be monitored in real time through aninfrared thermal imager, so that the problem that a traditional point-type sensor can only be used for controlling the position of a key point is solved; the histogram variance of the infrared thermal image is calculated and compared with a set threshold value, so that a suspected flame or an electric spark can be found; and the image is subjected to histogram equalization, the suspected target area can be found by marking the communication, edge extraction is carried out on each suspected target region, the extracted edge contour is recognized through a fisher classifier, the target ignitionpoint can be found, and then a fire extinguishing device can be used for extinguishing fire to the target ignition point. According to the method and the system, external heating faults of the transformer can be monitored through the infrared monitoring transformer, and the condition that the surface of the equipment is continuously and stably heated due to internal heating faults is avoided, theglobal temperature can be well controlled, and meanwhile accurate fire extinguishing can be achieved through a fire extinguishing device on the corresponding side of the transformer.

Description

technical field [0001] The invention relates to the field of transformer safety control, and in particular provides a transformer ignition point monitoring and fire extinguishing method and system based on infrared technology. Background technique [0002] With the continuous rapid development of China's economy, the demand for electricity continues to grow rapidly, and the accident rate of transformers operating on the network is also on the rise, threatening the security of the power grid. In the prior art, there are a lot of studies on fire extinguishing during the working process of transformers, but most of them use point temperature detection methods to detect the temperature of transformers, and when extinguishing fires, the transformers are also extinguished in all directions. [0003] Existing methods have at least the following disadvantages: [0004] 1. Using point sensors to monitor the temperature of the transformer can only control the position of key points, ...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the object of the present invention is to provide a transformer ignition point monitoring and fire extinguishing method and system based on infrared technology, to at least solve the problems existing in the existing method