Self-energy-taking transformer vibration monitoring method and device based on micro-electro-mechanical technology

Abstract

The invention discloses a self-energy-taking transformer vibration monitoring method and device based on a micro-electro-mechanical technology, relates to the field of transformer vibration monitoring. The structure is simple, design is reasonable, use is convenient, and transformer vibration can be monitored in a low-power-consumption low-cost and convenient-deployment way. The device comprises a sealed shell, a vibration energy collector fixed on the side wall of the sealed shell, an energy storage unit fixedly arranged in the sealed shell, a power supply conditioning PCB and a vibration monitoring PCB, wherein the power supply conditioning PCB and the vibration monitoring PCB are arranged in parallel; a chip type MEMS accelerometer is mounted on the vibration monitoring PCB, and the vibration monitoring PCB is perpendicular to the vibration energy collector; and the MEMS accelerometer is used for transformer vibration monitoring, the power supply end is sequentially connected with the power supply conditioning PCB and the energy storage unit, and the input end of the energy storage unit is connected with the vibration energy collector.

Description

technical field [0001] The invention relates to the field of transformer vibration monitoring, in particular to a micro-electromechanical technology-based self-energy transformer vibration monitoring method and device. Background technique [0002] The main transformer is the main noise source of the 110kV indoor substation. The iron core of the main transformer in operation generates periodic vibration due to the influence of magnetostriction, and the vibration is transmitted to the shell and radiates noise outward. Reducing the noise of the main transformer body is the most effective means of substation noise control. However, due to the coupling relationship between shell vibration and noise and load changes, the design cost of the low-noise main transformer is high and the construction is difficult. [0003] At the same time, the winding is the most faulty part of the transformer, so many scholars have studied the mechanism of transformer vibration. Winding vibration i...

AI Technical Summary

Problems solved by technology

However, the piezoelectric sensor is difficult to accurately respond to low-frequency vibration characteristics, consumes a lot of power, and can only be deployed in a wired form, resulting in inconvenient installation

At the same time, since each piezoelectric sensor has to be calibrated one by one when it leaves the factory, it is also difficult to reduce costs in mass production

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