Transformer winding and iron core surface vibration signal detecting system and method

Abstract

The invention discloses a transformer winding and iron core surface vibration signal detecting system. The transformer winding and iron core surface vibration signal detecting system comprises a laser vibration measurer, a data acquisition card, a computer and a support used for supporting the laser vibration measurer, wherein the laser vibration measurer is fixed to the support, the included angle theta is formed between laser light emitted by the laser vibration measurer and the plane perpendicular to the transformer winding and iron core surface to be measured, the output end of the laser vibration measurer is connected with the input end of the data acquisition card, and the output end of the data acquisition card is connected with the input end of the computer. The invention further provides a transformer winding and iron core surface vibration signal detecting method. The transformer winding and iron core surface vibration signal detecting system and method can accurately measure vibration signals of to-be-measured positions of the transformer winding and iron core surface.

Description

technical field [0001] The invention relates to a detection system for vibration speed, in particular to a detection system and method for vibration signals of transformer windings and iron core surfaces. Background technique [0002] In recent years, with the rapid expansion of power demand for my country's economic development, the power grid has continued to develop in the direction of high voltage and large capacity, which poses greater challenges to the safe and reliable operation of the power system. As one of the most critical power equipment in the power system, the normal operation of the power transformer plays a decisive role in the reliable transmission, flexible distribution, and safe and reliable use of electric energy. popular research directions. [0003] According to the transformer theory, when the transformer is running stably, the vibration of the iron core is mainly generated by the magnetostrictive effect of the silicon steel sheet and the electromagne...

AI Technical Summary

Problems solved by technology

Scholars at home and abroad generally use the vibration measurement system based on the piezoelectric acceleration sensor when measuring the vibration signal on the surface of the transformer. When the system is implemented, the sensor needs to be directly adsorbed on the surface of the vibration source by using a magnetic base. Therefore, if the internal structure of the transformer ( Iron core and winding) surface vibration signals are tested. In order to ensure the safety of personnel and the accuracy of the fixed point, during the process of fixing the sensor and changing the measurement position, the equipment must be powered off and then manually operated, and the surface of the winding and iron core often has There is a very high voltage (tens of kilovolts to hundreds of kilovolts), and the piezoelectric acceleration sensor itself is made of metal, which may lead to high voltage and cause casualties. Therefore, the vibration of the traditional piezoelectric acceleration sensor is used. It is not feasible for the test system to obtain vibration signals on the surface of the transformer core and windings

In the study of transformer vibration theory, the most important point is the transmission process of the vibration signal of the transformer winding and the iron core body. Therefore, the research on the vibration signal of the iron core and winding surface is indispensable, but the existing technology does not target Introduction to Surface Vibration Signal Acquisition

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