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Transformer fault diagnosis method based on CT technology

A technology for transformer faults and diagnosis methods, which is applied in the fields of instruments, measurement of electrical variables, CAD numerical modeling, etc., can solve the problems of prone to errors, low diagnosis efficiency, complex transformer diagnosis methods, etc., and achieves simple methods, diagnosis efficiency and accuracy. high rate effect

Inactive Publication Date: 2020-07-14
JIANGSU FRONTIER ELECTRIC TECH
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Problems solved by technology

At present, the transformer fault diagnosis method is relatively complicated, the diagnosis efficiency is low, and errors are prone to occur

Method used

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  • Transformer fault diagnosis method based on CT technology
  • Transformer fault diagnosis method based on CT technology
  • Transformer fault diagnosis method based on CT technology

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to explain the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0029] Such as figure 1 As shown, the temperature measurement diagram of the internal temperature field of the transformer of the present invention. An infrared transparent window 3 is installed on the transformer cabinet 1, an infrared temperature measuring optical fiber 4 is fixed on the surface of the infrared transparent window 3, and the infrared temperature measuring optical fiber 4 is sequentially connected to the industrial computer 2 and the remote communication system.

[0030] The invention provides a transformer fault diagnosis method based on "CT" technology, including:

[0031] (1) Obtain the "slice" temperature field of the transformer in the horizontal, vertical and horizontal directio...

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Abstract

The invention discloses a transformer fault diagnosis method based on a CT technology, and the method comprises the steps: obtaining slice temperature fields of a transformer in a transverse direction, a longitudinal direction and a horizontal direction during normal operation; adopting a numerical simulation method, and constructing a standard temperature field through calculation of a control equation and a regression equation; acquiring temperature fields in different load states in an actual operation process, comparing the actual temperature fields with a standard temperature field to acquire temperature abnormal region information, and pre-judging accidents and faults. According to the method, slice temperature fields in the transformer in the transverse direction, the longitudinal direction and the horizontal direction are tested and analyzed, then the normal and abnormal states of the temperature fields in the transformer are obtained, the diagnosis purpose of pre-judging transformer faults is achieved, the method is simple, and the diagnosis efficiency and accuracy are high.

Description

Technical field [0001] The invention relates to a transformer fault diagnosis method, in particular to a transformer fault diagnosis method based on "CT" technology. Background technique [0002] The power transformer is one of the most important equipment in the power system. The operation status of the transformer is directly related to the stability of the distribution network system. The hot spot temperature of the transformer winding is the main reason that affects the insulation life of the winding, and it is caused by the temperature rise of the transformer winding and the hot spot temperature. The faults are very common, so monitoring the transformer winding and its temperature rise is very important to ensure the normal operation and life of the transformer. The current transformer fault diagnosis method is relatively complicated, the diagnosis efficiency is low, and errors are prone to occur. Computed tomograph (CT technology for short), also known as tomography techno...

Claims

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Application Information

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IPC IPC(8): G01R31/00G06F30/20G06F111/10
CPCG01R31/00
Inventor 张卫庆王成亮徐洪高爱民于国强殳建军
Owner JIANGSU FRONTIER ELECTRIC TECH
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