Transformer online monitoring device and transformer online monitoring method based on instantaneous acceleration characteristics

Abstract

The invention discloses a transformer online monitoring device and a transformer online monitoring method based on instantaneous acceleration characteristics. The device comprises an instantaneous acceleration characteristics measurement module, a signal conditioning and acquisition module and a digital processing and analyzing module; the instantaneous acceleration characteristics measurement module is connected with the signal conditioning and acquisition module, and the signal conditioning and acquisition module is connected with the digital processing and analyzing module. With the methodand the device provided by the invention, instantaneous acceleration characteristics information of a plurality of measurement points of a transformer oil tank main body is obtained in real time, an action acceleration value representing vibration amplitude of the transformer main body is calculated, and by comparison with an over vibration threshold value and a quasi over vibration threshold value, whether the measured transformer has main body abnormal over vibration is judged. The device provided by the invention is independent from a power network, and has the advantages of being simple and easy to realize, reliable and accurate, and so on. Application of the method and the device provided by the invention is helpful for transformer operating workers to accurately and reliably acquireinstantaneous acceleration data of the transformer main body in real time.

Description

technical field [0001] The invention belongs to the field of power systems, and relates to a transformer online monitoring device and method based on transient acceleration characteristics, which are used for measuring, recording and analyzing the transient acceleration characteristics of an oil-immersed power transformer body, and evaluating the operating state of the transformer. Background technique [0002] As a key main power equipment, the transformer plays a pivotal role in the power system, and its stable operation is an important prerequisite to ensure the reliable transmission, flexible distribution and safe use of electric energy in the entire power system. With the continuous improvement of power system capacity and voltage level, higher requirements are put forward for the reliability and safety of power transformers. However, during the peak period of electricity consumption in summer, explosion and fire accidents of the transformer body caused by internal faul...

AI Technical Summary

Problems solved by technology

However, during the peak period of electricity consumption in summer, explosions and fire accidents of the transformer body caused by internal faults occur from time to time

Especially for high-voltage level, large-capacity hub transformers, due to their high cost, complex structure, and large loads, once they explode and catch fire, they will cause serious economic losses.

In addition, large transformers contain dozens of tons of flammable insulating oil inside. Explosion and fire will inevitably lead to hot oil splashing and flames, which seriously threaten the safety of the operators in the station and the lives and property of the surrounding residents, and seriously affect social stability.

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