Method and device for liquid level detection of porcelain sleeve, computer device, and storage medium

Abstract

The invention relates to a method and a device for liquid level detection of a porcelain sleeve, a computer device, and a storage medium. The method comprises: sending an ultrasonic excitation signalto an ultrasonic probe, the ultrasonic excitation signal being used to control the ultrasonic probe to emit corresponding ultrasonic waves to a porcelain sleeve in a cable terminal; receiving reflected waves generated by propagation of the ultrasonic waves in the porcelain sleeve, and extracting to obtain reflected wave data according to the reflected waves; according to the reflected wave data, calculating propagation attenuation rate of the ultrasonic waves in the porcelain sleeve, according to the attenuation rate, compensating the reflected waves, extracting feature information of compensated reflected waves; according to the reflected wave feature information, determining a liquid level position in the porcelain sleeve, to obtain a determination result. Through calculating the attenuation rate of the ultrasonic waves in a transmission process, the reflected waves are compensated according to the attenuation rate. The liquid level position is determined by the compensated reflectedwave feature information, and a problem of reflected wave attenuation caused by uneven wall thickness of the porcelain sleeve is effectively prevented, and the liquid level position in the porcelainsleeve is accurately determined.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a method, a device, a computer device and a storage medium for detecting liquid level of a porcelain sleeve type terminal. Background technique [0002] High-voltage cable outdoor porcelain sleeve terminal is a terminal form commonly used in the power cable industry. The high-voltage cable outdoor porcelain sleeve terminal uses a porcelain sleeve as the outer insulation, and insulating oil is generally filled between the porcelain sleeve and the stress cone as insulating oil. , It plays the role of insulation, heat dissipation and cooling, arc extinguishing, buffering and shock absorption. However, during the use of the porcelain sleeve type terminal, there may be problems of uneven temperature distribution and abnormal local heating. This phenomenon is caused by the loss or leakage of the filling medium insulating oil in the terminal. Energy accumulation due to loss or lea...

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Problems solved by technology

[0003] The traditional detection method uses ultrasonic signals to detect the insulating oil level in the porcelain bushing from the outer wall of the porcelain bushing. However, due to the uneven wall thickness of the porcelain bushing, the detection by the traditional method will lead to inaccurate measurement and low detection reliability.

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