A detachable built-in infrared temperature measuring device for gis

Abstract

The invention provides a detachable internally-arranged infrared temperature measuring device for the GIS. The detachable internally-arranged infrared temperature measuring device for the GIS comprises an infrared perspective window, an infrared temperature measurement sensor body, a fully-sealed shell, a first installation flange, a second installation flange, a circuit protective shell and a signal amplifying and processing circuit. The infrared perspective window is connected with the infrared temperature measurement sensor body. The infrared temperature measurement sensor body is located inside the fully-sealed shell. One end of the fully-sealed shell is fixed to the GIS through the first installation flange and the other end of the fully-sealed shell and the circuit protective shell are connected through the second installation flange. The signal amplifying and processing circuit is located inside the circuit protective shell. The detachable internally-arranged infrared temperature measuring device for the GIS is flexible and detachable, the infrared temperature measurement sensor body and the fully-sealed shell are safe and independent, the sealing performance and the voltage resistant performance are good, and the infrared temperature measurement sensor body and the fully-sealed shell are installed outside a GIS air chamber, so that verification, maintenance and replacement which are conducted by an infrared temperature sensing system are facilitated under the condition that the GIS is operated; the device can be detached under the condition that normal operation of the GIS is not influenced, an internal electric field structure of the GIS is not influenced, and the requirement for the sealing performance of the GIS is satisfied.

Description

technical field [0001] The invention relates to a temperature measuring device, in particular to a detachable built-in infrared temperature measuring device for GIS. Background technique [0002] Gas-insulated metal-enclosed switchgear (GIS) is more and more used in power systems due to its advantages such as less maintenance workload, small footprint, and high reliability. However, once a failure occurs, the maintenance cost is high and the period Long, seriously affecting the normal operation of the power grid, temperature monitoring as an important means of power system fault diagnosis, is conducive to discovering the initial fault of GIS equipment, preventing the expansion of the accident, and providing further guarantee for the normal operation of GIS equipment. Excessive GIS load current, loose connection parts, improper closing of the switch or wear of the contacts may cause the temperature rise of the conductive contact part to be too high. Real-time monitoring of th...

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Problems solved by technology

Since GIS is a fully enclosed device, it is limited by its internal insulation requirements, the sealing performance of the lead-out part, and the service life of the embedded internal sensors, so that ordinary temperature measurement methods, fiber Bragg grating temperature measurement methods and conventional wireless temperature measurement methods cannot be applied. As far as the online temperature measurement of the internal conductor contact of GIS is concerned, scholars at home and abroad have only done research on infrared radiation detection technology and infrared thermal diagnosis technology, and have not yet applied it in the field. in-depth study

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