SAW temperature measurement system for switch cabinet

Abstract

The invention discloses an SAW temperature measurement system for a switch cabinet. The SAW temperature measurement system structurally comprises SAW temperature sensors 1, an SAW receiving and transmitting antenna 7, a feeder line 9 and a controller. The SAW temperature measurement system has the advantages that the purposes of high-voltage isolation, sensor power supply, wiring isolation and the like are achieved; the small SAW temperature sensors are directly arranged at heating points, the real-time temperature of each contact is directly displayed on the controller, setting and search of various perimeters can be carried out, and the small SAW temperature sensors are extremely high in safety, stable and reliable in performance and small in size, are directly installed on the plum-blossom-shaped contacts in the switch cabinet to achieve real-time monitoring of the temperature of the heating points, carry out wireless data transmission with the controller and can be conveniently and flexibly installed without being influenced by the structure or the space of the switch cabinet. Contact fingers closely attached to the plum-blossom-shaped contacts are adopted in a fixture, and therefore the fixture can work on high-voltage, high-current, high-magnetic-field, flammable and combustible, corrosive and dusty application occasions and other poor application occasions to carry out temperature measurement; the SAW temperature measurement system supports open communication interfaces and easily-realized system integration.

Description

technical field [0001] The invention relates to a surface acoustic wave (SAW) temperature measurement system used for temperature measurement of a switchgear, and belongs to the technical field of surface acoustic wave monitoring. Background technique [0002] During the long-term operation of the switchgear in the power system, the plum blossom contacts of the circuit breaker handcart often have problems such as surface oxidation and aging of the electric contact point, resulting in overheating of the equipment and even serious accidents. The switchgear is a closed device with a small space. General manual inspection is more troublesome, and real-time temperature measurement is impossible. The solution of contact temperature measurement is especially important. There are mainly two types of existing solutions: [0003] 1. Wireless temperature measurement solution [0004] a) Inductive power acquisition method Inductive power acquisition method is relatively large in size...

AI Technical Summary

Problems solved by technology

It solves the passive wireless of the temperature measurement system, the direct measurement of the hot spot of the plum blossom contact on the circuit breaker handcart, and the difficult headlight problem of the later upgrade and transformation of the switchgear, which will greatly improve the safety of the system in the high-voltage and high-current environment. Surface acoustic wave and data transmission technology can measure temperature in high voltage, high current, high magnetic field, flammable and explosive environments, and can be used in fields such as electric power, chemical industry and tunnels

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