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Rapid fault diagnosis system for high voltage capacitive equipment

A capacitive equipment, rapid diagnosis technology, applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve the problems of lack of predictability and fault identification ability, shortening equipment life, single characteristic parameters, etc., to achieve high failure hidden danger prediction Capability, high sensitivity, wide application effect

Active Publication Date: 2018-02-23
STATE GRID CORP OF CHINA +2
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AI Technical Summary

Problems solved by technology

[0003] For high-voltage capacitive equipment that has been put into operation for a long period of time, the withstand voltage test will inevitably damage the insulation of the equipment, which has the disadvantage of reducing the life of the equipment
In addition, the characteristic parameters observed in the conventional withstand voltage test are single, which does not have the ability to predict and identify faults and defects, and the withstand voltage device is usually relatively bulky, which affects the efficiency of on-site work

Method used

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  • Rapid fault diagnosis system for high voltage capacitive equipment
  • Rapid fault diagnosis system for high voltage capacitive equipment
  • Rapid fault diagnosis system for high voltage capacitive equipment

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0034] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

[0035] Such as figure 1 As shown, the present invention provides a high-voltage capacitive equipment defect rapid diagnosis system, including:

[0036] High frequency square wave generator, generating high frequency square wave above 1kHz;

[0037] High-frequency square-wave power amplifier, which amplifies the power of the square wave generated by the high-frequency square-wave generator, not less than 20VA;

[0038] The high-frequency square-wave secondary boosting device performs secondary boost to the square wave output by the high-frequency square-wave power amplifier, mai...

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Abstract

The invention relates to a rapid fault diagnosis system for high voltage capacitive equipment. The device is formed by a high frequency square wave generator, a high frequency square wave power amplifier, a high frequency square wave secondary boost device, a phase tracking device, an acquisition system, display equipment, control keyboard and a control system. The control system analyzes the capacitance change of a representative characteristic branch by a current absorption situation corresponding to a specific frequency point obtained by the acquisition system and establishes a frequency spectrum curve according to current absorption situations corresponding to different specific frequency points, and the fault development trends of the same type of high-voltage capacitive equipment orthe same high-voltage capacitive equipment at different times are diagnosed according to the comparison with a reference curve of the same type of high-voltage capacitive equipment. The invention provides non-destructive testing equipment for primary capacitive equipment.

Description

technical field [0001] The invention relates to a high-voltage capacitive equipment defect rapid diagnosis system. The device diagnoses the high-voltage capacitive equipment defect by analyzing high-frequency capacitance changes caused by high-temperature aging, wear, rupture, and poor winding characteristics of the high-voltage equipment. Background technique [0002] With the development and application of smart grid technology, a large number of non-destructive technical means have been applied to the regular inspection of on-site equipment. In the power system, high-voltage capacitive electrical equipment refers to the equipment whose insulation structure can be regarded as a group of series capacitors, including high-voltage capacitive bushings, current transformers (CTs), capacitive voltage transformers (CVTs) and coupling capacitors (OY ), etc., accounting for about 40% to 50% of the total number of substation equipment. Capacitive equipment plays an important role i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1227
Inventor 任赟郭润生史小飞马晓明强中一
Owner STATE GRID CORP OF CHINA
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