Superconducting magnet quenching detection system based on active power

A detection system, superconducting magnet technology, applied in the direction of electric power measurement, improvement of basic electrical components, and measurement of electricity through the use of electromagnetic effect devices, can solve problems such as difficulty in implementation, interference, and noise interference, and ensure safe and stable operation , The effect of improving the detection sensitivity

Inactive Publication Date: 2011-02-16
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Application Information

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Problems solved by technology

However, this method is susceptible to interference from external electromagnetic fields, and requires an additional set of ultrasonic generating and receiving devices, which is difficult to implement on site.
Both the voltage detection method and the bridge circuit detection method have the problem of noise interference

Method used

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  • Superconducting magnet quenching detection system based on active power
  • Superconducting magnet quenching detection system based on active power
  • Superconducting magnet quenching detection system based on active power

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing:

[0019] The invention as figure 1 shown. figure 1 A block diagram of the quench signal detection system is given, which consists of eight parts: superconducting coil, voltage sensor circuit, differential operational amplifier, absolute value circuit, analog multiplication circuit, low-pass filter circuit, comparison circuit and output signal. Its working process is: the voltage on the superconducting coils L1 and L2 passes through the voltage sensor circuit and is used as the input of the differential operation amplifier circuit. This circuit takes the difference of the input voltage signal and can amplify it. The output signal is K (u 1 -u 2 ), the absolute value circuit takes its absolute value, and realizes the active power detection P=K(u 1 -u 2 )*i, the size of K is determined by the specific parameters in the circuit. According to the improved active power detect...

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Abstract

The invention relates to a superconducting magnet quenching detection system based on active power, comprising a first superconducting coil, a second superconducting coil, a voltage sensor circuit, a differential operational amplifier, an absolute value circuit, an analog multiplication circuit, a low-pass filter circuit, a comparison circuit, an output signal, and the like. A voltage on the superconducting coils passes by the voltage sensor circuit, is used as the input of a differential operational amplifying circuit, is calculated for a difference value and amplified by the circuit, an absolute value of the output signal K(u1-u2) is calculated by the absolute value circuit, and the active power is detected through the analog multiplication circuit, wherein P=K(u1-u2)*i. The signal P passes by the low-pass filter circuit and the comparison circuit, and the output signal is converted into a high level or a low level according to the detected P value. When superconducting coil is not quenched, the P value is smaller than a patriarch voltage, and the output signal is at a high level. When the superconducting coil is quenched, the P value is larger than the patriarch voltage, and the output signal is at a lower level so as to judge whether superconducting is quenched or not according to the output signal.

Description

【Technical field】 [0001] The invention relates to a superconducting magnet quench detection system and detection method based on photoacoustic technology, and belongs to the field of electrical technology. 【Background technique】 [0002] Due to the rapid development of my country's economy and the unbalanced distribution of power resources, my country's power system has the characteristics of large, complex and interconnected systems. A series of challenges and problems then arise. Such as: increasing cable transmission capacity, reducing power grid loss, complexity of power load, increasingly prominent safety issues of power grid, improvement of power quality, etc. The combination of superconducting technology and electric power technology forms superconducting electric power technology, which can fundamentally meet the above-mentioned challenges and solve the above-mentioned problems. Use superconducting power technology to increase the capacity of a single unit and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/20G01R31/00G01R21/08
Inventor 周雪松权博马幼捷宋代春李圣明陈浩刘思佳梁芳田程文
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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