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Ferro resonance failure diagnosis expert system

A ferromagnetic resonance and fault diagnosis technology, applied in fault locations, measuring devices, instruments, etc., can solve problems such as equipment waste, and achieve the effect of realizing early warning function, increasing accident samples, and simple warning function

Inactive Publication Date: 2009-06-10
CHINA NERIN ENG
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

This method has a certain degree of blindness, which can easily cause waste of equipment.

Method used

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  • Ferro resonance failure diagnosis expert system
  • Ferro resonance failure diagnosis expert system

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Embodiment Construction

[0010] The software structure of the present invention includes operation monitoring, parameter setting and history database management. The database adopts Microsoft SQL2000 database. The program flow is:

[0011] ①Check whether a resonance fault occurs, if yes, go to the next step; if not, go to step 7;

[0012] ② Read the system self-inspection results within the specified time before the failure;

[0013] ③Whether there is repeated failure or action of the same equipment during this period, if so, select the last failure or action information;

[0014] ④ Find out the fault and action information of the matching rules as the cause of the resonance;

[0015] ⑤ Save this analysis result as a sample, and calculate the probability of the sample appearing in the existing samples;

[0016] ⑥ Propose the operator resonance fault information and sample probability, and prompt the corresponding harmonic elimination measures, and the diagnosis and analysis are completed;

[0017...

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Abstract

The invention discloses a ferro resonance fault diagnosis expert system, used for fault diagnosis of ferro resonance caused by supersaturation of an electromagnetic voltage transformer, comprising a databank, a knowledge base and an inference engine. The databank is composed of configuration king industrial universal configuration softwares and microsoft databank softwares. Through the communication network, the configuration king configuration softwares receive electrical data transmitted by each detection device, and upload the electrical data required by the fault diagnosis to the upper layer databank system; the knowledge base adopts knowledge representation based on epsilon production. The invention judges generation of ferro resonance fault and the reason through the general detection device, and adds accident sample through managing the history bank, thereby realizing simple early-warning.

Description

technical field [0001] The invention relates to a ferromagnetic resonance fault diagnosis expert system, in particular to a ferromagnetic resonance fault diagnosis expert system. The invention relates to a ferromagnetic resonance fault diagnosis method, in particular to a ferromagnetic resonance fault diagnosis expert system. Background technique [0002] Electromagnetic voltage transformer is an iron-core inductance element. If there is some kind of large disturbance or operation, its nonlinear iron core may be saturated, thus forming a special single-phase or three-phase resonance circuit with the ground capacitance of the line and equipment. The ferroresonant overvoltage with a higher amplitude is excited continuously, which threatens the safe operation of the power grid. Since there are many causes of ferromagnetic resonance, its analysis requires a certain amount of investment in hardware equipment. Therefore, most companies do not conduct in-depth analysis of the cause...

Claims

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Application Information

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IPC IPC(8): G01R31/08G01R31/02
Inventor 殷铭宏欧阳伟沈力军
Owner CHINA NERIN ENG
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