Method for measuring operating temperature of conductor connecting point in switch cabinet based on surface acoustic waves

A technology of operating temperature and surface acoustic wave, applied in the field of power switchgear, can solve the problems of low test efficiency, inability to use infrared temperature measurement method to measure temperature, and large investment, so as to improve measurement accuracy and efficiency, and improve the level of automatic processing , to ensure the effect of safety and reliability

Inactive Publication Date: 2014-08-13
STATE GRID CORP OF CHINA +1
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  • Description
  • Claims
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Problems solved by technology

The temperature measurement method inside the existing switchgear is mainly realized by the method of built-in wired temperature probe. This method requires a large investment and needs to be installed in the background of the local program, and the

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  • Method for measuring operating temperature of conductor connecting point in switch cabinet based on surface acoustic waves

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Embodiment Construction

[0017] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0018] A surface acoustic wave-based method for measuring the operating temperature of a conductor connection point in a switchgear is figure 1 implemented on the measurement setup shown. The operating temperature measurement of the conductor connection point in the switch cabinet includes a SAW temperature sensor installed on the conductor connection point in the switch cabinet and a temperature acquisition and processing device installed outside the switch cabinet. The device is connected and data transmission is carried out. The temperature acquisition and processing device includes a main controller, a transceiver controller, a transceiver switch, an amplifier, a demodulator, a radio frequency signal generator and a radio frequency signal amplifier, the main controller is connected with the transceiver controller, and the transceiver control ...

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Abstract

The invention relates to a method for measuring operating temperature of a conductor connecting point in a switch cabinet based on surface acoustic waves. The method is technically characterized by comprising the steps that an SAW temperature sensor is arranged on the conductor connecting point in the switch cabinet, and the operating temperature of the conductor connecting point is collected; the SAW temperature sensor sends temperature data of the conductor connecting point to a temperature collecting and processing device at a far end in a wireless radio frequency mode; the temperature collecting and processing device receives the temperature data, sent by the SAW temperature sensor, of the conductor connecting point in the wireless radio frequency mode; the temperature collecting and processing device analyzes and processes the received data to obtain the operating temperature of the conductor connecting point in the switch cabinet. The SAW sensing technology and the wireless communication technology are adopted for signal transmission and high-voltage isolation, the problem that the operating temperature of the conductor connecting point in the high-voltage switch cabinet is hard to measure is fundamentally solved, measurement precision and measurement efficiency are improved, the equipment maintenance frequency is reduced, and mounting and maintenance cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of electric switchgear, in particular to a method for measuring the operating temperature of a conductor connection point in a switchgear based on surface acoustic waves. Background technique [0002] During the operation of the power switchgear, overheating often occurs due to poor contact of conductor joints inside the switchgear. If the heating of the conductor joints is discovered in time, accidents can be effectively avoided and the stable operation of the equipment can be guaranteed. The temperature measurement method inside the existing switchgear is mainly realized by the method of built-in wired temperature probe. This method requires a large investment and needs to be installed in the background of the local program, and the test efficiency is low, and the test environment requirements are high. At the same time, due to the power switch The cabinet body is made of shielding material, therefore, th...

Claims

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Application Information

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IPC IPC(8): G01K11/26
Inventor 郗晓光李万超葛荣刚唐庆华满玉岩魏菊芳曹梦李琳李维博董艳唯
Owner STATE GRID CORP OF CHINA
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