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Transformer expansion tank oil level estimation system and method

A technology of transformer oil and oil level, which is applied in the field of infrared thermal imaging, can solve the problems of consuming workload and achieve the effect of reducing workload

Pending Publication Date: 2022-06-03
JIANGSU HONGYUAN ELECTRIC
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] Purpose of the invention: To provide a system and method for estimating the oil level of a transformer oil conservator, which is used to solve the problem of labor-consuming judgment of the oil level of the oil conservator by manual analysis, and can realize automatic estimation of the oil level of the oil conservator

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  • Transformer expansion tank oil level estimation system and method
  • Transformer expansion tank oil level estimation system and method
  • Transformer expansion tank oil level estimation system and method

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Embodiment Construction

[0065] The technical solutions provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0066] like figure 1 As shown in FIG. 4 , the transformer oil pillow oil level estimation system provided by the present invention includes: an identification module, a processing module, a fitting module, and an oil level curve acquisition module. The identification module is used to identify the infrared thermal image of the transformer oil pillow, mark the graphic range on the side of the oil pillow, and obtain a temperature matrix P; the processing module is used to perform grayscale processing on the temperature matrix P to obtain a grayscale matrix G, and is used to filter and binarize the grayscale matrix G to obtain a binary matrix W, to remove the background image; the fitting module is used to extract the boundary of the side of the oil pillow according to the binary matrix W, and use the Huo The points belonging to the el...

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Abstract

The invention provides a transformer oil conservator oil level estimation system and method, and the system comprises a recognition module which is used for recognizing an infrared thermogram of a transformer oil conservator, marking the graphic range of the side surface of the oil conservator, and obtaining a temperature matrix P; the processing module is used for carrying out gray processing on the temperature matrix P to obtain a gray matrix G; carrying out filtering and binarization calculation on the gray matrix G to obtain a binary matrix W; the fitting module is used for acquiring the boundary of the side surface of the oil conservator according to the binary matrix W, acquiring points belonging to an ellipse on the boundary of the side surface of the oil conservator by adopting Hough transform, and fitting an elliptic equation by adopting a least square method; the gradient calculation module is used for carrying out gradient calculation on the elliptic equation region and fitting an oil level line equation; and the oil level curve obtaining module is used for obtaining the oil level position according to the elliptic equation and the oil level line equation.

Description

technical field [0001] The invention relates to the technical field of external infrared thermal imaging, in particular to a system and method for estimating the oil level of a transformer oil pillow. Background technique [0002] Transformer oil needs to have insulation and cooling functions, high quality requirements, and direct contact with air is not allowed during operation. The power transformer oil pillow is used to create conditions for the thermal expansion and contraction of the transformer oil to ensure that the transformer oil tank is often filled with oil. If the oil level of the oil pillow is too high, the oil will overflow when the transformer is fully loaded or overloaded. If it is fully sealed, it will increase the pressure in the oil tank; Discharge in the tube, causing an accident. Therefore, the oil level of the transformer needs to be controlled within a certain range. [0003] The internal structure of the oil pillow is generally divided into oil fil...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T5/30G01F23/292G01F23/80
CPCG06T7/0004G06T5/30G01F23/292G06T2207/10048G06T2207/20061Y04S10/50
Inventor 张勇徐洪海王浩刘文松胡飞潘尚举
Owner JIANGSU HONGYUAN ELECTRIC