Sub-health running status recognition method of electrical device

A technology of operating status and identification method, applied in the direction of measuring device, measuring electricity, fault location, etc., can solve the problems of burning components, equipment, electrical device loss, manpower and material resources, etc., to achieve high reliability and reduce losses , cost-saving effect

Inactive Publication Date: 2011-06-15
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional electrical devices do not have intelligent real-time monitoring means, and the maintenance of the device is realized through artificial periodic inspection, which consumes a lot of manpower and material resources, especially the remote maintenance of the device. The cost of periodic inspection of this device is very high , In addition, the method of repairing by technicians when there is a failure also has disadvantages, that is, once the electrical device fails, it may cause huge losses. % is caused by damage to key electronic components
[0003] The so-called "sub-health" refers to the normal operation of the equipment on the surface, but there is a problem with one or more components, but the problem is not enough to cause the equipment to fail, but the parameters of the component with the problem at this time are running Changes have occurred, such as changes in the voltage drop of the PN junction, changes in the leakage current of a pin, etc. At this time, it is the "sub-healthy" operating state. The "sub-healthy" operating state is relatively hidden and difficult to be noticed by the user. However, if the equipment continues to work in the "sub-healthy" state, it will appear in an "unhealthy" state, that is, a failure will not only burn components and equipment, but also indirectly cause other economic losses and lead to serious consequences.

Method used

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  • Sub-health running status recognition method of electrical device
  • Sub-health running status recognition method of electrical device
  • Sub-health running status recognition method of electrical device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The method of identifying the "sub-healthy" operating status of electrical devices uses the parameter measurement of the 27n80 field effect tube to illustrate the working principle. The microprocessor adopts PIC18F2550, supports multi-channel ten-digit precision A / D conversion, and integrates USB2 .0 communication module, M is Hall DC transformer, used to measure the current flowing through the two pins when the field effect tube is working normally, so as to obtain the resistance value of the PN junction, which is measured by the voltage drop between the field effect tube PN junction The change can determine whether the field effect tube is working normally, whether it is in the "pressure healthy" working state, that is, the fault critical state. There are three A / D monitoring points in the circuit, which are used to measure the gate conduction voltage and mutual inductance of the field effect tube. The sensor induces voltage and PN junction voltage drop.

[0026] Working...

Embodiment 2

[0032] The method for identifying the "sub-healthy" operating state of an electrical device described in Example 1, is based on the attached figure 1 , The data processing server is embedded in the device, and a cost-effective embedded system is used as the data processing server. The collected signals are transmitted to the data processing server through various methods. The server calculates the parameter change rate. If it exceeds the standard range, Pre-alarm in time, because there are fewer equipment, a cost-effective embedded system can meet the real-time requirements of data storage and computing.

Embodiment 3

[0034] The method for identifying the "sub-healthy" operating state of an electrical device described in embodiment 1 or 2, as attached figure 2 , The data processing server is remote, for example, the data processing server is located at a node on the Internet, and this server has high performance, can withstand a large amount of data storage, calculation work, this method is suitable for electrical device manufacturers, with a wide range of Customer groups and areas far away from the after-sales service can achieve unified detection and unified management of products bought all over the world in this way, so that a data measurement terminal and an Internet data transmission module can be added to the electrical device. The Internet data transmission module uploads the results of multiple data measurement terminals to the manufacturer’s data processing server for unified storage and management in batches and classifications. The data processing server regularly classifies and s...

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PUM

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Abstract

The invention discloses a method for identifying the 'sub-healthy' operating condition of an electrical device, aiming at the problem that the prior electrical device does not have an intelligent real time monitoring means, so the maintenance of the device is realized through the regular check by people which is costly in terms of labor and materials; particularly the remote maintenance of the device through regular check is too costly. The method of the invention comprises the following steps of: monitoring the status of the electrical device by a data processing server, a data measuring terminal and the electrical device, with the data processing server memorizing the historical records of the collection capacities of all malfunction key points of the corresponding electrical device through a database software, and with the data measuring terminal carrying out long term real time monitoring over the malfunction key points of the electrical device and uploading the collection capacities of the malfunction key points to the data processing server through various communication means; judging if the present state of the electrical device is the malfunction critical state through a forecasting algorithm; and then reminding a user or a technician to repair the malfunction point in time. The method of the invention is suited to examining electrical devices.

Description

Technical field: [0001] The invention relates to an identification method for intelligent real-time monitoring of the operating state of an electrical device. Background technique: [0002] Traditional electrical installations do not have intelligent real-time monitoring methods. The maintenance of the installations is achieved through man-made periodic inspections. The use of man-made periodic inspections consumes manpower and material resources, especially the remote maintenance of the devices. The cost of regular inspections for such devices is very high. In addition, the method of repairing by technicians in the event of a failure also has disadvantages. Once the electrical device fails, it may cause huge losses. For example, the power generation device of a power plant is damaged and the shutdown is caused. Among the reasons for the failure of the electrical device, 90 % Is caused by damage to key electronic components. [0003] The so-called "sub-health" refers to the operat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R31/02G01R31/08
Inventor 石广范闫广明王冠然
Owner HEILONGJIANG UNIV
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