A method for detecting physical and chemical properties of transformer oil
A technology of transformer oil and physical and chemical properties, applied in the direction of chemical property prediction, neural learning methods, instruments, etc., can solve the problems of cumbersome detection process, long test cycle, and many links, achieve high detection accuracy, shorten the detection cycle, and simplify detection The effect of steps
Active Publication Date: 2021-06-25
SHANGHAI JIAOTONG UNIV +2
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Problems solved by technology
[0027] 2.1 Traditional aging test method
[0032] Gas chromatography can reflect the fault condition of the transformer very well, but this detection method can only diagnose the fault that has occurred inside the transformer, and it is difficult to predict the potential fault of the transformer
Moreover, this detection method has many links, the detection process is relatively cumbersome, and the test cycle is long, which inevitably introduces large errors, cannot detect fast-growing faults in time, and is difficult to fully exert its role.
Method used
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[0095] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0096] First, some related terms and principles are explained, as follows:
[0097] IALO: Improved antlion optimization algorithm;
[0098] MFU: Multi-Frequence Ultrasound, multi-frequency ultrasonic, refers to a technology that uses ultrasonic waves containing multiple center frequency points to detect transformer oil.
[0099] WNN, namely wavelet neural network, is a feed-forward neural network that combines wave transform and BP neural network. IALO-WNN is a wavelet neural network optimized by usin...
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The invention discloses a method for detecting physical and chemical properties of transformer oil, including: S1: establishing a physical and chemical performance detection system for transformer oil, including: a host computer, a main control microprocessor, a data acquisition card, and several ultrasonic transceiver circuits; S2: The upper computer sends control instructions to the main control microprocessor; S3: the main control microprocessor receives the control instructions and sends pulse signals to the ultrasonic transceiver circuit; S4: the ultrasonic transceiver circuit receives pulse signals and sends out ultrasonic waves; after the ultrasonic waves enter the transformer oil and propagate Become the ultrasonic echo; S5: The ultrasonic transceiver circuit receives the ultrasonic echo and sends it back to the main control microprocessor after processing; S6: The data acquisition card collects the processed echo signal through the main control microprocessor and sends it to To the host computer; S7: The host computer receives the data, and uses the IALO-WNN model to calculate the data, and quickly and accurately obtain the physical and chemical properties of the transformer oil.
Description
technical field [0001] The invention relates to transformer oil detection technology, in particular to a method for detecting physical and chemical properties of transformer oil. Background technique [0002] The power transformer is an important equipment in the power system. As the insulating medium in the transformer, the transformer oil has important functions such as insulation, cooling, and arc suppression. During the transportation, installation and operation of the transformer, the transformer oil will inevitably be mixed with moisture and particles to make it polluted, which will lead to the deterioration of physical and chemical properties such as oil viscosity, breakdown voltage and acid value. Therefore, only by timely and effectively testing the physical and chemical properties of transformer oil can the safe and stable operation of transformers be guaranteed. [0003] The performance of transformer oil can be expressed by various parameters of the oil. Over t...
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IPC IPC(8): G01N29/024G01N11/00G06N3/08G16C20/30G16C20/70
CPCG01N11/00G01N29/024G01N2291/0226G06N3/084G06N3/086G16C20/30G16C20/70
Inventor 王昕曹令军王永翔张昕唐术公杨威
Owner SHANGHAI JIAOTONG UNIV