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: 2021-03-09
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
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[0028] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0029] Such as figure 1 As shown, the temperature measurement diagram of the temperature field inside the transformer of the present invention is shown. An infrared light-transmitting window 3 is installed on the transformer cabinet 1, and an infrared temperature-measuring optical fiber 4 is fixed on the surface of the infrared-transmitting window 3, and the infrared temperature-measuring optical fiber 4 is sequentially connected with the industrial computer 2 and the remote communication system.
[0030] A transformer fault diagnosis method based on "CT" technology of the present invention, comprising:
[0031] (1) Obtain the "slice" temperature field of the transformer in three directions: h...
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The invention discloses a transformer fault diagnosis method based on "CT" technology, which includes: obtaining the "slice" temperature field of the transformer in the three directions of transverse, vertical and horizontal directions during normal operation; using numerical simulation method, through the control equation Calculate with the regression equation to construct a standard temperature field; obtain the temperature field under different load states in the actual operation process, compare the actual temperature field with the standard temperature field, obtain information on abnormal temperature areas, and pre-judge accidents and failures. The present invention tests and analyzes the "sliced" temperature field in three directions of the transformer from the horizontal, vertical and horizontal directions, and then obtains the normal and abnormal states of the internal temperature field of the transformer, so as to achieve the purpose of diagnosing the fault of the transformer. Simple, high diagnostic efficiency and accuracy.
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 operating 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 affecting the insulation life of the winding. However, due to the temperature rise of the transformer winding and the hot spot temperature The failure of the transformer is very common, so monitoring the transformer winding and its temperature rise is very important to ensure the normal operation and life of the transformer. At present, transformer fault diagnosis methods are relatively complicated, with low diagnosis efficiency and prone to errors. Computed tomography (Computed Tomograph, CT for short), also known as to...
Claims
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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