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Method for measuring pressure of arc extinguish chamber of high-voltage circuit breaker based on acoustic surface waves

A high-voltage circuit breaker, surface acoustic wave technology, applied in the electromechanical field, can solve problems such as no monitoring

Inactive Publication Date: 2014-07-02
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0002] In the power system, the arc extinguishing chamber of the high voltage circuit breaker is a fully enclosed structure. In order to ensure the arc extinguishing performance during operation, the arc extinguishing chamber of the high voltage circuit breaker must have a certain pressure to ensure the arc extinguishing ability. The pressure is monitored, but because the arc extinguishing chamber is a fully enclosed structure, there has been no effective means to achieve monitoring

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  • Method for measuring pressure of arc extinguish chamber of high-voltage circuit breaker based on acoustic surface waves

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Embodiment Construction

[0016] The implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0017] A method for measuring the pressure of the arc extinguishing chamber of a high-voltage circuit breaker based on surface acoustic waves, such as figure 1 As shown, the method is to effectively measure the pressure in the arc extinguishing chamber of the high-voltage circuit breaker with a fully enclosed structure, and the steps of the method include:

[0018] (1) Place the surface acoustic wave sensor label in the arc extinguishing chamber, the surface acoustic wave sensor label is fixed on the inner wall of the arc extinguishing chamber, and its position corresponds to the position of the surface acoustic wave receiver placed outside the arc extinguishing chamber;

[0019] (2) Start the surface acoustic ...

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Abstract

The invention relates to a method for measuring the pressure of an arc extinguish chamber of a high-voltage circuit breaker based on acoustic surface waves. The method comprises the steps that (1) an acoustic surface wave sensor tag is placed in the arc extinguish chamber; (2) an acoustic surface wave receiver is started, so that the acoustic surface wave receiver transmits an electromagnetic pulse signal towards the acoustic surface wave sensor tag; (3) after the acoustic surface wave sensor tag receives the electromagnetic pulse signal, the signal is converted into the acoustic surface waves through an interdigital transducer, after the acoustic surface waves encounter with a reflection strip, echoes are generated, and the echoes are converted into electromagnetic waves through the interdigital transducer to be transmitted out through an antenna; (4) the acoustic surface wave receiver receives a signal transmitted out by the antenna; (5) the electromagnetic pulse signals transmitted out and received by the acoustic surface wave receiver are compared to obtain the internal pressure value of the arc extinguish chamber. According to the method, the pressure change condition in the arc extinguish chamber can be monitored, and the major breakthrough is achieved in the technological means.

Description

technical field [0001] The invention belongs to the field of electromechanical technology, in particular to a method for measuring the pressure of an arc extinguishing chamber of a high-voltage circuit breaker based on surface acoustic waves. Background technique [0002] In the power system, the arc extinguishing chamber of the high voltage circuit breaker is a fully enclosed structure. In order to ensure the arc extinguishing performance during operation, the arc extinguishing chamber of the high voltage circuit breaker must have a certain pressure to ensure the arc extinguishing ability. The pressure is monitored, but because the arc extinguishing chamber is a fully enclosed structure, there has been no effective means to achieve monitoring. Contents of the invention [0003] The object of the present invention is to propose a method for measuring the pressure of an arc extinguishing chamber of a high-voltage circuit breaker based on surface acoustic waves. [0004] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/53G01L11/04
Inventor 满玉岩张东斐唐庆华郗晓光张弛
Owner STATE GRID CORP OF CHINA
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