Power transformer fault diagnosis device and method based on vibration signals

A technology of fault diagnosis device and power transformer, which is applied in the direction of adopting electrical devices, measuring devices, instruments, etc., can solve problems such as fault diagnosis, complicated operation, and various equipment, and achieve the effect of real-time monitoring accuracy and stability assurance

Pending Publication Date: 2021-11-16
SHENYANG POLYTECHNIC UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Existing fault diagnosis methods for power transformers: frequency response analysis method, short-circuit impedance method, oil chromatographic analysis method, etc. need to carry out core lifting operations on power transformers, with a large number of equipment and complicated operations
At present,

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  • Power transformer fault diagnosis device and method based on vibration signals
  • Power transformer fault diagnosis device and method based on vibration signals
  • Power transformer fault diagnosis device and method based on vibration signals

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Embodiment Construction

[0037] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] In this embodiment, a power transformer fault diagnosis device based on vibration signals, such as figure 1As shown, it includes a vibration signal acquisition module with multiple measuring points, a vibration signal optimization module connected to an external power supply, an online post-processing module for vibration signals, an abnormality display terminal and a fault alarm; the vibration signal acquisition module is arranged in the power transformer box Above, the vibration signal optimization module is connected with the vibration signal optimization module through the wire, the vibration signal optimization module is connected with the vibration signal onli...

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Abstract

The invention provides a power transformer fault diagnosis device and method based on vibration signals, and relates to the technical field of high-voltage power equipment. The device comprises a vibration signal acquisition module with multiple measuring points, a vibration signal optimization module internally connected with a power supply, a vibration signal online post-processing module, a normal and abnormal display end and a fault alarm. The vibration signal acquisition module uses a piezoelectric vibration sensor to measure a vibration signal of a transformer box body and transmits the vibration signal to the vibration signal optimization module, and the vibration signal optimization module optimizes the vibration signal and then transmits the vibration signal to the vibration signal online post-processing module. The vibration signal online post-processing module stores the processed vibration signal data, performs data visualization processing and data comparison analysis, and then transmits the processed vibration signal data to the frequent and abnormal display terminal and the fault alarm, the frequent and abnormal display terminal displays a vibration ripple diagram of the vibration signal, and the fault alarm performs voice broadcast on a fault state.

Description

technical field [0001] The invention relates to the technical field of high-voltage power equipment, in particular to a vibration signal-based power transformer fault diagnosis device and method. Background technique [0002] As an important equipment in high-voltage power equipment, power transformers play a vital role in the power transmission and transformation system. If the power transformer fails during operation, it will not only hinder its own operation, but also cause the power transmission and transformation system to fail. damage to the grid, affecting the stability, security, and economy of the power grid. Therefore, it is necessary to grasp the operating status of power transformers in real time and detect existing faults in time, so that operation and maintenance personnel can take corresponding measures in time to reduce the losses caused by accidents. [0003] Existing fault diagnosis methods for power transformers: frequency response analysis method, short-...

Claims

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Application Information

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IPC IPC(8): G01M13/00G01H11/08
CPCG01M13/00G01H11/08
Inventor 范一鸣徐建源林莘曹辰庚振新王宏升张显忠张帆黄茗昊王昕宇
Owner SHENYANG POLYTECHNIC UNIV
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