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Reactor iron core loosening fault diagnosis method, device and equipment

A technology of fault diagnosis and reactors, which is applied in the direction of using electrical devices, measuring devices, instruments, etc., can solve problems such as loose fastening structures and difficult detection, and achieve fast speed, high precision, good generalization ability and expression ability Effect

Pending Publication Date: 2021-11-30
STATE GRID SHAANXI ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a reactor core loose fault diagnosis method, device and equipment, which solves the technical problem that it is difficult to detect abnormalities after the fastening structure is inevitably loosened during the long-term operation of a high-voltage shunt reactor

Method used

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  • Reactor iron core loosening fault diagnosis method, device and equipment
  • Reactor iron core loosening fault diagnosis method, device and equipment
  • Reactor iron core loosening fault diagnosis method, device and equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0040] refer to figure 1 , a reactor core loose fault diagnosis method based on gradient boosting decision tree algorithm, including the following steps:

[0041] 1. Use the vibration sensor to collect the source signal of the high-voltage shunt reactor in the working state, and transmit the collected signal to the terminal to perform Fast Fourier Transform (FFT) and wavelet denoising to smooth the vibration signal The preprocessing of filtering and denoising is mainly to suppress unnecessary components, extract key data features according to spectrum analysis, and select distinctive features for analysis.

[0042] 2. Use the processed data as the training set to train the prediction model built by the GBDT algorithm. The model built by the GBDT algorithm is composed of multiple weak learners serially superimposed and weighted to form a strong learner. The steps are as follows:

[0043] (a) Initialize the threshold and weight of a weak learner;

[0044] (b) Establish M class...

Embodiment 2

[0053] refer to Figure 4 , a reactor iron core loose fault diagnosis device, comprising a vibration sensor connected in sequence, an acquisition card and a terminal, the vibration sensor is used to measure the vibration source signal of the reactor, the acquisition card, the acquisition card is used to collect the vibration source signal And transmitted to the terminal, the terminal is used to judge whether the reactor is under the nut loose fault according to the vibration source signal, and predict the degree of looseness of the reactor.

Embodiment 3

[0055] A kind of computer equipment provided by the present invention, such as Figure 5 As shown, it includes an electrically connected memory and a processor, wherein the memory stores a calculation program that can run on the processor, and when the processor executes the calculation program, the steps of the above-mentioned fault diagnosis method are realized.

[0056] The computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to implement the present invention.

[0057] The terminal device may be computing devices such as desktop computers, notebooks, palmtop computers, and cloud servers. The terminal device may include, but not limited to, a processor and a memory.

[0058] The processor can be a central processing unit (Central Processing Unit, CPU), and can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (A...

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Abstract

The invention discloses a reactor core loosening fault diagnosis method, device and equipment, and the method comprises the steps: carrying out the collection of a vibration signal of a high-voltage shunt reactor through a vibration measurement device, selecting the surface of a reactor oil tank as a measurement position, carrying out the preprocessing of the collected signal, carrying out the model prediction of the preprocessed vibration signal, and therefore, whether the reactor iron core is loosened or not is detected. According to the method, the collected vibration signals are effectively classified to proper labels by adopting a GBDT classification algorithm, the classification speed is high, the classification precision is high, and the requirements on the vibration position and the load size are not high when the signals are collected, so that the occurrence of the looseness fault of the nut of the high-voltage shunt reactor can be preliminarily judged, and the looseness degree can be predicted.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis of circuit equipment, and in particular relates to a reactor core fault diagnosis method, device and equipment. Background technique [0002] In the current environment of continuous improvement of voltage level and rapid development of market economy, power companies have increased the requirements for safe and economical operation of power transmission and transformation equipment. High-voltage shunt reactors are a key link in power systems. If they are reliable The fluctuation of power characteristics will directly affect the security and stability of the power system. According to statistical data, due to the high voltage level and large capacity of high-voltage shunt reactors, the vibration of long-term operation is likely to cause problems such as loosening of structural parts. Among them, the fastening clamps that restrain the iron core are parts that are prone to loosening. Due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G01H11/08
CPCG01H11/08G06F18/285G06F18/24323
Inventor 吴经锋王文森张璐丁彬韩彦华吴昊王南尚宇毛辰唐露甜王辰曦
Owner STATE GRID SHAANXI ELECTRIC POWER RES INST
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