High-voltage switch cabinet structure, unreasonable design abnormal noise diagnosis method and system thereof, and medium
A high-voltage switchgear, reasonably designed technology, applied in the measurement of ultrasonic/sonic/infrasonic waves, measuring devices, instruments, etc., can solve the problems of unreasonably designed abnormal noise diagnosis methods, etc., to improve the level of safe operation, low cost, and convenient testing Effect
Inactive Publication Date: 2019-07-12
STATE GRID HUNAN ELECTRIC POWER +2
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Problems solved by technology
[0005] Technical problem to be solved by the present invention: Aiming at the above-mentioned problems of the prior art, a high-voltage switchgear structure and its unreasonable design abnormal noise diagnosis method, system and medium are provided. The present invention detects the normal and abnormal noise of the high-voltage switchgear Vibration signal, analyzing the cause of abnormal noise according to the difference in frequency spectrum, can detect potential operating defects that cause abnormal noise in high-voltage switchgear in advance, and has the advantages of low cost, high safety, convenient testing, and no need to change the operation mode of high-voltage switchgear. High-voltage switchgear operating device detection to improve the safe operation level of high-voltage switchgear
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[0030] Such as figure 1 As shown, the implementation steps of the abnormal noise diagnosis method for the unreasonable design of the structure of the high-voltage switchgear in this embodiment include:
[0031] 1) When the noise of the detected high-voltage switchgear is abnormal, the vibration signal of the vibration measuring point of the detected high-voltage switchgear is collected;
[0032] 2) Perform spectrum analysis on the vibration signal to obtain the vibration signal spectrum;
[0033] 3) Compare the vibration signal spectrum and the vibration signal spectrum of the vibration signal when the noise of the detected high-voltage switchgear is normal to determine whether the cause of the abnormal noise of the detected high-voltage switchgear is an unreasonable structural design defect.
[0034] In this embodiment, the vibration measuring point of the detected high-voltage switchgear in step 1) is located at the corresponding position of the three-phase busbar and the t...
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The invention discloses a high-voltage switch cabinet structure, an unreasonable design abnormal noise diagnosis method and system thereof and a medium. The diagnosis method comprises the steps that when noise of a detected high-voltage switch cabinet is abnormal, collecting a vibration signal of a vibration measuring point of the detected high-voltage switch cabinet; performing frequency spectrumanalysis on the vibration signal to obtain a vibration signal frequency spectrum; and comparing the vibration signal frequency spectrum with the vibration signal frequency spectrum of the vibration signal when the noise of the detected high-voltage switch cabinet is normal to judge whether the abnormal noise generation reason of the detected high-voltage switch cabinet is the unreasonable structure design defect. The method can find potential operation defects causing abnormal noise of the high-voltage switch cabinet in advance, has the advantages of being low in cost, high in safety, convenient to test and free of changing the operation mode of the high-voltage switch cabinet, can be used for detecting the operation device of the high-voltage switch cabinet, and improves the safe operation level of the high-voltage switch cabinet.
Description
technical field [0001] The invention relates to the field of fault diagnosis of a high-voltage switchgear, in particular to a high-voltage switchgear structure and an unreasonable design abnormal noise diagnosis method, system and medium. Background technique [0002] High-voltage switchgear is the key equipment connecting transformers and users. Once a fault occurs, it will cause a large-scale power outage, causing serious economic losses and social impact. [0003] Due to the action of electrodynamic force, high voltage switchgear generates vibration and noise during operation. When the load current is high, the load harmonic content is heavy, the structural design of the switchgear is unreasonable, and the internal structural components are loose, the vibration and noise of the high-voltage switchgear will be abnormal. If the high-voltage switchgear maintains abnormal vibration operation for a long time, it will easily lead to serious defects such as loose internal parts...
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Login to View More IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 吴晓文卢铃曹浩胡胜彭继文周年光吕建红黄韬周卫华叶会生
Owner STATE GRID HUNAN ELECTRIC POWER