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System and method of diagnosing GIS (Gas Insulated Switchgear) mechanical defects based on independent component analysis denoising

An independent component analysis and mechanical defect technology, which is applied in the direction of measuring devices, machine/structural component testing, instruments, etc., can solve the problems of the influence of the accuracy of the detection results, the inability of the ultra-high frequency sensor to suppress interference, etc., and achieve the goal of ensuring reliable operation Effect

Inactive Publication Date: 2016-06-01
STATE GRID ANHUI ELECTRIC POWER +1
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Problems solved by technology

[0010] Fault diagnosis can be carried out according to the waveform characteristics of the discharge pulse and the frequency characteristics of the UHF signal, which has good detection sensitivity, but the structural design of the UHF sensor itself cannot suppress the interference from the high-frequency band in the substation, which makes the accuracy of the detection results severely affected

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  • System and method of diagnosing GIS (Gas Insulated Switchgear) mechanical defects based on independent component analysis denoising
  • System and method of diagnosing GIS (Gas Insulated Switchgear) mechanical defects based on independent component analysis denoising
  • System and method of diagnosing GIS (Gas Insulated Switchgear) mechanical defects based on independent component analysis denoising

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Embodiment Construction

[0049] The present invention is described in detail below in conjunction with accompanying drawing:

[0050] Such as figure 1 As shown, the vibration signal of the GIS shell is mainly transmitted by the vibration of its internal power transmission equipment. These power transmission equipment include circuit breakers, disconnectors, transformers, and busbars. Therefore, the vibration signals on the shell have the vibration signals of these equipment. vibration characteristics. figure 1 Among them, 1. indicates vibration caused by partial discharge, 2. indicates vibration caused by foreign objects, 3. indicates vibration caused by electromagnetic force and magnetostriction, 4. indicates vibration caused by electrostatic force, 5. indicates vibration caused by operation, and 6. indicates vibration Vibration caused by a short circuit to ground.

[0051] Vibration caused by partial discharges.

[0052] Since the foreign matter is too small compared to the shell, the effect of f...

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Abstract

The invention discloses a system and a method of diagnosing GIS (Gas Insulated Switchgear) mechanical defects based on independent component analysis denoising. An acceleration sensor is fixed at the position of a measurement point on the surface of the GIS shell, and the acceleration sensor, a charge amplifier, a data acquisition unit and a data processing device are serially connected in sequence; after the data processing device carries out denoising on measured vibration signals, a spectrum for vibration signals at each measurement point is obtained finally; and through analyzing the signal component of each frequency range of the spectrum, the GIS mechanical fault type is determined. The system and the method of the invention have the beneficial effects that the GIS diagnosis technology research based on abnormal vibration analysis provides an important and feasible detection means for discovering GIS mechanical defects or hidden fault, and an important role is played in ensuring reliable operation of the GIS.

Description

technical field [0001] The invention relates to the technical field of mechanical fault diagnosis, in particular to a GIS mechanical defect diagnosis system and method based on independent component analysis and denoising. Background technique [0002] Gas-insulated metal-enclosed switchgear (GasInsulatedSwitchgear, GIS) is widely used in substations of various voltage levels, and has many advantages, such as small footprint, long maintenance cycle, all components are sealed from environmental interference, high operational reliability, and advanced technology And the economy is superior. Although GIS has many advantages, there are also some problems. For example, because all components of GIS are packaged in metal boxes, the structure is compact, and there are many internal electrical components, it is difficult to find and accurately locate the fault in time; Its complex structure is not easy to disassemble, and it is difficult to realize on-site maintenance. In case of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
CPCG01M99/004H01H11/0062H01H33/02H01H2300/052
Inventor 郑浩朱胜龙欧阳昱
Owner STATE GRID ANHUI ELECTRIC POWER
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