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Wireless charge-based wireless vibration monitoring device of dry type transformer

A dry-type transformer, wireless vibration technology, used in measuring devices, instruments, measuring ultrasonic/sonic/infrasonic waves, etc.

Inactive Publication Date: 2014-12-10
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the current problem of vibration monitoring of resin cast dry-type transformers, the present invention proposes a wireless vibration monitoring device for dry-type transformers based on wireless charging, which monitors the vibration state of the transformer by installing it on the body of the dry-type transformer

Method used

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  • Wireless charge-based wireless vibration monitoring device of dry type transformer
  • Wireless charge-based wireless vibration monitoring device of dry type transformer
  • Wireless charge-based wireless vibration monitoring device of dry type transformer

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Embodiment Construction

[0021] Combine below figure 1 , figure 2 , image 3 The present invention is described in detail.

[0022] Such as figure 1 As shown, a dry-type transformer wireless vibration monitoring device based on wireless charging, the device includes: acceleration vibration sensor, charging control and protection circuit, rechargeable lithium battery, power receiving device, microprocessor unit, wireless data transmission unit .

[0023] Since the vibration signal of the dry-type transformer comes from a variety of vibration sources, and its frequency range is generally below 10kHz, ADXL001 is selected as the digital vibration sensor for the sensor. The ADXL001 can be selected between 3 dynamic ranges (±70g / ADXL001-70, ±250g / ADXL001-250, ±500g / ADXL001-500), all with a resonant frequency of 22kHz. The device operates from a 3.3V or 5V supply and requires no external charge pump circuitry. Moreover, ADXL001 also has a unique self-diagnosis mode, which can verify whether the device...

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Abstract

The invention relates to a wireless charge-based wireless vibration monitoring device of a dry type transformer. The wireless charge-based wireless vibration monitoring device comprises an acceleration vibration sensor, a charge controlling and protecting circuit, a rechargeable lithium battery, an electric energy receiving device, a micro-processor unit and a wireless data sending unit, wherein the electric energy receiving device comprises a receiving coil, a rectification filter module and a voltage stabilization module. The wireless charge-based wireless vibration monitoring device uses a wireless charge mode to charge the rechargeable lithium battery, and the vibration sensing device does not need to connect with a power line so that the power supply problem for the power transformer monitoring device is solved; the wireless charge-based wireless vibration monitoring device uses the wireless data sending unit to send the gathered transformer vibration information to the receiving device so that the data line arrangement problem of a high-voltage field is avoided; the wireless charge-based wireless vibration monitoring device has advantages of convenience and flexibility in mounting.

Description

technical field [0001] The invention relates to vibration monitoring of a dry-type transformer. Background technique [0002] In 1964, the German AEG Transformer Factory developed the first 20kV class, 400kVA copper wire winding epoxy resin cast transformer. After that, Dutch Smit Transformer Factory, Japan's Toshiba, Mitsubishi, Fuji, Osaka and other transformer factories successively produced this product in batches, and its insulation grade was raised from Class B to Class F and Class H. Due to a series of advantages of epoxy resin casting transformers, epoxy casting transformers account for about 70% of the output of dry-type transformers in Europe. In developed countries such as the United States, Germany, and Japan, the output of dry-type transformers has accounted for more than 20% of the output of distribution transformers. In complete substations, dry-type transformers account for 80-90%. Some countries have clearly stipulated that fire-proof transformers should ...

Claims

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Application Information

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IPC IPC(8): G01H17/00
Inventor 孙醒涛高圣伟张牧张奇云
Owner TIANJIN POLYTECHNIC UNIV
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