CN110006527A - High-voltage switch gear cabinet and its unreasonable design extraordinary noise diagnostic method, system and medium - Google Patents

High-voltage switch gear cabinet and its unreasonable design extraordinary noise diagnostic method, system and medium Download PDF

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Publication number
CN110006527A
CN110006527A CN201910293730.8A CN201910293730A CN110006527A CN 110006527 A CN110006527 A CN 110006527A CN 201910293730 A CN201910293730 A CN 201910293730A CN 110006527 A CN110006527 A CN 110006527A
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CN
China
Prior art keywords
tension switch
vibration
switch cabinet
cabinet
detected
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Pending
Application number
CN201910293730.8A
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Chinese (zh)
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
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd
State Grid Hunan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd
State Grid Hunan Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd, State Grid Hunan Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201910293730.8A priority Critical patent/CN110006527A/en
Publication of CN110006527A publication Critical patent/CN110006527A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups

Abstract

The invention discloses a kind of high-voltage switch gear cabinet and its unreasonable design extraordinary noise diagnostic method, system and medium, diagnostic method of the present invention includes the vibration signal that the vibration measuring point for being detected high-tension switch cabinet is acquired when being detected high-tension switch cabinet noise exception;Spectrum analysis is carried out to vibration signal and obtains vibration signals spectrograph;By vibration signals spectrograph, be detected high-tension switch cabinet noise it is normal when vibration signal vibration signals spectrograph compare judgement be detected high-tension switch cabinet extraordinary noise producing cause whether be unreasonable structure design defect.The present invention can have found the potential operational defect for leading to high-tension switch cabinet extraordinary noise in advance, has the advantages that at low cost, highly-safe, convenient test, without changing the high-tension switch cabinet method of operation, it can be used in the detection of high-tension switch cabinet running gear, improve the safety operation level of high-tension switch cabinet.

Description

High-voltage switch gear cabinet and its unreasonable design extraordinary noise diagnostic method, system and Medium
Technical field
The present invention relates to high voltage switch cabinet fault diagnostic fields, and in particular to a kind of high-voltage switch gear cabinet and its unreasonable Design extraordinary noise diagnostic method, system and medium.
Background technique
High-tension switch cabinet is the key equipment for connecting transformer and user, will lead to large-area power-cuts thing once breaking down Therefore cause serious economic loss and social influence.
Due to electrodynamic effect, high-tension switch cabinet generates vibration and noise in the process of running.When load current is higher, When load harmonic content is heavier, switch cabinet structure design is unreasonable, inner structure part loosens, high-tension switch cabinet vibration and noise Exception will occur.If high-tension switch cabinet keeps abnormal vibrations to run for a long time, be easy to cause its internal part loosen, contact cracking with And the major defects such as shelf depreciation, seriously threaten the safe operation of electric system.
Currently, mainly detecting switchgear failure using infrared measurement of temperature, detection method for local discharge, it is mainly used for examining The problems such as disconnected switchgear interior contact is bad, insulation is impaired, but switchgear operating status is more disliked when above problem generation Bad, defect has been formed at this time.Therefore, there are certain hysteresis qualitys for above-mentioned detection method, cannot form early detection in defect. In addition to this, above-mentioned detection method equipment cost is higher, and mesomerism caused by being difficult to find because of switchgear design defect is asked Topic, can not effectively differentiate resonant position, frequency, reason.
Summary of the invention
The technical problem to be solved in the present invention: in view of the above problems in the prior art, a kind of high-voltage switch gear cabinet is provided And its unreasonable design extraordinary noise diagnostic method, system and medium, the present invention by detection high-tension switch cabinet noise normally with Vibration signal when abnormal can find to lead to high-tension switch cabinet in advance according to frequency spectrum variance analysis extraordinary noise producing cause The potential operational defect of extraordinary noise has at low cost, highly-safe, convenient test, without changing high-tension switch cabinet operation side The advantages of formula, can be used in the detection of high-tension switch cabinet running gear, improve the safety operation level of high-tension switch cabinet.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet, implementation steps include:
1) vibration signal for being detected the vibration measuring point of high-tension switch cabinet is acquired when being detected high-tension switch cabinet noise exception;
2) spectrum analysis is carried out to vibration signal and obtains vibration signals spectrograph;
3) by vibration signals spectrograph, detected high-tension switch cabinet noise, the vibration signals spectrograph of vibration signal is compared when normal Judge to be detected whether high-tension switch cabinet extraordinary noise producing cause is unreasonable structure design defect.
Preferably, the vibration measuring point that high-tension switch cabinet is detected in step 1) is located at high-tension switch cabinet three-phase bus row and wears Sleeve-board pipe corresponding position.
Preferably, sample frequency is higher than 40kHz when vibration signal in step 1).
Preferably, vibration signals spectrograph is obtained to vibration signal progress spectrum analysis in step 2 to specifically refer to using in Fu Leaf transformation method carries out spectrum analysis to vibration signal and obtains vibration signals spectrograph.
Preferably, when the detailed step of step 3) includes: that vibration signals spectrograph, detected high-tension switch cabinet noise is normal Each frequency component amplitude of the vibration signals spectrograph of vibration signal is compared with changes in distribution, if occurring within the scope of 12kHz 50Hz and its entirety of integral multiple harmonic frequency components amplitude greatly improve, and have no that the frequency content other than 50Hz frequency multiplication then determines Being detected high-tension switch cabinet extraordinary noise producing cause is unreasonable structure design defect.
Preferably, in step 3) be detected high-tension switch cabinet noise it is normal when vibration signal vibration signals spectrograph calibration Step includes: the vibration letter that the vibration measuring point for being detected high-tension switch cabinet is acquired when detected high-tension switch cabinet noise is normal Number, to vibration signal carry out spectrum analysis obtain be detected high-tension switch cabinet noise it is normal when vibration signal vibration signal frequency.
Preferably, judge that detected high-tension switch cabinet extraordinary noise producing cause designs as unreasonable structure in step 3) to lack After falling into, high-tension switch cabinet extraordinary noise producing cause is detected in judgement to further include in the case where unreasonable structure design defect The step of carrying out finite element analysis verifying for detected high-tension switch cabinet, detailed step includes:
S1) finite element numerical analysis model is established for detected high-tension switch cabinet;
S2) by finite element numerical analysis model carry out finite element analysis obtain switchgear vibration distribution situation, by apply with The identical boundary condition of actual motion load current is calculated detected height under different harmonic currents and combinations thereof effect and presses off Close each vibration frequency components amplitude and changes in distribution of cabinet;
S3) by each vibration frequency components amplitude of detected high-tension switch cabinet and changes in distribution, step 2 to vibration signal into Each vibration frequency components amplitude that line frequency spectrum analysis obtains vibration signals spectrograph is compared with changes in distribution, if the two one It is unreasonable structure design defect that cause, which then verifies judgement and is detected high-tension switch cabinet extraordinary noise producing cause,.
The present invention also provides a kind of unreasonable design extraordinary noise diagnostic systems of high-voltage switch gear cabinet, including computer to set Standby, which is programmed to perform the aforementioned unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet of the present invention The step of.
The present invention also provides a kind of unreasonable design extraordinary noise diagnostic systems of high-voltage switch gear cabinet, including computer to set It is standby, it is stored on the storage medium of the computer equipment and is programmed to perform that the aforementioned high-voltage switch gear cabinet of the present invention is unreasonable to be set Count the computer program of extraordinary noise diagnostic method.
The present invention also provides a kind of computer readable storage medium, it is stored with and is programmed on the computer readable storage medium To execute the computer program of the unreasonable design extraordinary noise diagnostic method of the aforementioned high-voltage switch gear cabinet of the present invention.
The present invention also provides a kind of high-tension switch cabinets, including high-tension switch cabinet ontology, further include computer equipment, the height It compresses switch and accelerometer is installed on cabinet ontology, the output end of the accelerometer is connected with computer equipment, which sets Standby the step of being programmed to perform the aforementioned high-voltage switch gear cabinet of the present invention unreasonable design extraordinary noise diagnostic method;Or it should It is stored with that be programmed to perform the unreasonable design of the aforementioned high-voltage switch gear cabinet of the present invention different on the storage medium of computer equipment The computer program of normal noise diagnostics method.
Compared to the prior art, the present invention have an advantage that the present invention by detection high-tension switch cabinet noise normally with Vibration signal when abnormal can find to lead to high-tension switch cabinet in advance according to frequency spectrum variance analysis extraordinary noise producing cause The potential operational defect of extraordinary noise has at low cost, highly-safe, convenient test, without changing high-tension switch cabinet operation side The advantages of formula, can be used in the detection of high-tension switch cabinet running gear, improve the safety operation level of high-tension switch cabinet.
Detailed description of the invention
Fig. 1 is the basic procedure schematic diagram of present invention method.
Fig. 2 is that present invention method switchgear vibrates point layout schematic diagram.
Fig. 3 is vibration signals spectrograph figure when present invention method switchgear noise is normal.
Vibration signals spectrograph figure when Fig. 4 is present invention method switchgear noise exception.
Fig. 5 be present invention method switchgear noise normally with vibration signals spectrograph comparison diagram when exception.
Specific embodiment
As shown in Figure 1, the implementation steps of the unreasonable design extraordinary noise diagnostic method of the present embodiment high-voltage switch gear cabinet Include:
1) vibration signal for being detected the vibration measuring point of high-tension switch cabinet is acquired when being detected high-tension switch cabinet noise exception;
2) spectrum analysis is carried out to vibration signal and obtains vibration signals spectrograph;
3) by vibration signals spectrograph, detected high-tension switch cabinet noise, the vibration signals spectrograph of vibration signal is compared when normal Judge to be detected whether high-tension switch cabinet extraordinary noise producing cause is unreasonable structure design defect.
In the present embodiment, the vibration measuring point that high-tension switch cabinet is detected in step 1) is located at high-tension switch cabinet three-phase bus row With threading casing corresponding position, it is close with threading casing corresponding position magnetic flux that reason is that switch board housing surface is arranged with three-phase bus Spend relatively large, the electric power induced is most strong, herein the sensitivity highest of vibration signal.As shown in Fig. 2, in the present embodiment, Step 1) selection arranges 5 vibrations in high-tension switch cabinet three-phase bus row and threading casing (as shown in label 6 in Fig. 2) corresponding position Dynamic measuring point (as shown in label 1~5 in Fig. 2) can select wherein some vibration measuring point as needed.
Sample frequency when acquiring the vibration signal for being detected the vibration measuring point of high-tension switch cabinet in the present embodiment, in step 1) Higher than 40kHz.Since audible sound range is located at 20~20kHz, in order to restore high-frequency vibration signal, data acquisition module Sample frequency cannot be below 40kHz.
In the present embodiment, vibration signals spectrograph is obtained to vibration signal progress spectrum analysis in step 2 and specifically refers to use Fourier transformation method carries out spectrum analysis to vibration signal and obtains vibration signals spectrograph.
For the ease of comparing vibration signals spectrograph, use Fourier transformation method to high-tension switch cabinet noise in the present embodiment Normally carry out spectrum analysis with vibration signal when exception, and the frequency resolution in frequency spectrum is identical, switchgear noise normally with Vibration signals spectrograph distribution when abnormal is as shown in Figure 3 and Figure 4 respectively.
Under normal circumstances, vibration acceleration maximum value is located at No. 4 measuring points, numerical value 2.22m/s2;No. 3 measuring point acceleration values Minimum, numerical value 0.98m/s2.Switchgear vibration frequency is more single, is concentrated mainly on 100Hz, containing a small amount of 200Hz, The 50Hz even-multiple frequency content such as 300Hz.Relative to normal condition, abnormal vibrations time domain waveform is more irregular, periodically not Obviously.Spectrum distribution is the results show that abnormal vibrations frequency is predominantly located at 50Hz and its integral multiple harmonic frequency components within the scope of 12kHz On, no longer using simple 100Hz as main frequency, all harmonic frequency components amplitudes are produced relative to greatly improving under normal circumstances The higher 50Hz odd-multiple harmonic frequency components of a large amount of amplitudes, spectrum complex degree significantly improves, but has no the frequency other than 50Hz frequency multiplication Ingredient.In the present embodiment, the detailed step of step 3) includes: that vibration signals spectrograph, detected high-tension switch cabinet noise is normal When vibration signal each frequency component amplitude of vibration signals spectrograph compared with changes in distribution, if there is 12kHz range The entirety of interior 50Hz and its integral multiple harmonic frequency components amplitude greatly improve, and have no that the frequency content other than 50Hz frequency multiplication is then sentenced Surely being detected high-tension switch cabinet extraordinary noise producing cause is unreasonable structure design defect.Wherein, it integrally greatly improves specific Refer to that the difference of the amplitude average value of vibration signals spectrograph is greater than preset threshold." there is the 50Hz and its integral multiple within the scope of 12kHz The entirety of harmonic frequency components amplitude greatly improves, and has no the frequency other than 50Hz frequency multiplication " it is for judging that unreasonable structure designs Defect or discharge defect or the key for loosening defect.
By taking switchgear vibrates measuring point 1 as an example, acceleration is normally as shown in Figure 5 with abnormal spectral contrast.By that can be seen in figure Out, normally and under the conditions of abnormal vibrations, switchgear vibration frequency is based on 50Hz integer multiple frequency, under exceptional condition, each frequency Rate ingredient amplitude greatly improves, but distribution situation is substantially similar.In general, electric discharge shows broadband with defect is loosened Frequency distribution characteristic, and non-50Hz harmonic frequency components amplitude is higher.Due in noise and vibration signal without different other than 50Hz frequency multiplication Normal frequency generates, and all 50Hz harmonic frequency components amplitudes are significantly increased as load current improves in addition, therefore, preliminary to exclude A possibility that electric discharge is with busbar bolt looseness, suspects inside switch cabinet body and threading casing separator due to inductive loop and three-phase Busbar generates the electric power of interaction.Due to, there are certain harmonic components, being inspired other than 100Hz in load current 50Hz frequency multiplication active force.With significantly rising for load current, the active force that harmonic wave generates in electric current is gradually obvious, and with open Closing cabinet, inherently frequency is close, thus produces mesomerism phenomenon.Therefore, it is former to judge that high-tension switch cabinet extraordinary noise generates Because of mesomerism caused by induced electromotive force.
Be detected in the present embodiment, in step 3) high-tension switch cabinet noise it is normal when vibration signal vibration signals spectrograph Demarcating steps include: that the vibration for the vibration measuring point for being detected high-tension switch cabinet is acquired when detected high-tension switch cabinet noise is normal Signal, to vibration signal carry out spectrum analysis obtain be detected high-tension switch cabinet noise it is normal when vibration signal vibration signal Frequently.Its vibration measuring point used acquires the mode of vibration signal, and carries out spectrum analysis to vibration signal and obtain with step 3) The vibration signals spectrograph of vibration signal is identical when the detected high-tension switch cabinet noise exception arrived, and details are not described herein.
Judge that be detected high-tension switch cabinet extraordinary noise producing cause sets as unreasonable structure in the present embodiment, in step 3) After counting defect, high-tension switch cabinet extraordinary noise producing cause is detected in judgement to go back in the case where unreasonable structure design defect Include the steps that carrying out finite element analysis verifying for detected high-tension switch cabinet, detailed step includes:
S1) finite element numerical analysis model is established for detected high-tension switch cabinet;
S2) by finite element numerical analysis model carry out finite element analysis obtain switchgear vibration distribution situation, by apply with The identical boundary condition of actual motion load current is calculated detected height under different harmonic currents and combinations thereof effect and presses off Close each vibration frequency components amplitude and changes in distribution of cabinet;
S3) by each vibration frequency components amplitude of detected high-tension switch cabinet and changes in distribution, step 2 to vibration signal into Each vibration frequency components amplitude that line frequency spectrum analysis obtains vibration signals spectrograph is compared with changes in distribution, if the two one It is unreasonable structure design defect that cause, which then verifies judgement and is detected high-tension switch cabinet extraordinary noise producing cause,.
High-tension switch cabinet extraordinary noise producing cause is detected in judgement to go back in the case where unreasonable structure design defect Include the steps that further increase the present embodiment height for high-tension switch cabinet progress finite element analysis verifying is detected and pressing off The accuracy of the unreasonable design extraordinary noise diagnostic method of cabinet is closed, and then extraordinary noise producing cause can be carried out as needed Verifying, and targetedly control measure can be proposed accordingly.
In conclusion the unreasonable design extraordinary noise diagnosis of the present embodiment high-voltage switch gear cabinet passes through selection high-voltage switch gear Cabinet vibrates measuring point;Vibration signal when detection high-tension switch cabinet noise is normal;Detect vibration when high-tension switch cabinet noise exception Signal;Vibration signal when to vibration signal of noise when normal and noise exception carries out spectrum analysis respectively;Analyze noise just Vibration signals spectrograph when often and vibration signals spectrograph difference when noise exception, generate according to frequency spectrum variance analysis extraordinary noise Reason;Switchgear extraordinary noise producing cause is verified using finite element numerical computational methods.The present embodiment high-voltage switch gear The diagnosis of cabinet unreasonable design extraordinary noise by with high security, convenient test, without changing high-tension switch cabinet operation The advantages of mode, can find the potential operational defect of high-tension switch cabinet in advance, improve the safety operation level of high-tension switch cabinet.
In addition, the present embodiment also provides a kind of unreasonable design extraordinary noise diagnostic system of high-voltage switch gear cabinet, including Computer equipment, the computer equipment are programmed to perform the unreasonable design of the aforementioned high-voltage switch gear cabinet of the present embodiment and make an uproar extremely The step of audio clinic method.In addition, the present embodiment also provides a kind of unreasonable design extraordinary noise diagnosis of high-voltage switch gear cabinet System, including computer equipment are stored on the storage medium of the computer equipment and are programmed to perform the aforementioned height of the present embodiment The computer program of the unreasonable design extraordinary noise diagnostic method of the cabinet that compresses switch.In addition, the present embodiment also provides a kind of meter Calculation machine readable storage medium storing program for executing is stored on the computer readable storage medium and is programmed to perform the aforementioned high-voltage switch gear of the present embodiment The computer program of the unreasonable design extraordinary noise diagnostic method of cabinet.In addition, the present embodiment also provides a kind of high-voltage switch gear Cabinet, including high-tension switch cabinet ontology, further include computer equipment, are equipped with accelerometer on the high-tension switch cabinet ontology, institute The output end for stating accelerometer is connected with computer equipment, which is programmed to perform the aforementioned height of the present embodiment and presses off The step of closing cabinet unreasonable design extraordinary noise diagnostic method;Or be stored on the storage medium of the computer equipment by It is programmed to carry out the computer program of the unreasonable design extraordinary noise diagnostic method of the aforementioned high-voltage switch gear cabinet of the present embodiment.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram. These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices work in a specific way In the computer-readable memory of work, so that it includes command device that instruction stored in the computer readable memory, which generates, Manufacture, the command device are realized in one or more flows of the flowchart and/or one or more blocks of the block diagram In specify function.These computer program instructions also can be loaded onto a computer or other programmable data processing device, and make It obtains and executes series of operation steps on a computer or other programmable device to generate computer implemented processing, thus counting The instruction executed on calculation machine or other programmable devices is provided for realizing in one or more flows of the flowchart and/or side The step of function of being specified in block diagram one box or multiple boxes.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet, it is characterised in that implementation steps include:
1) vibration signal for being detected the vibration measuring point of high-tension switch cabinet is acquired when being detected high-tension switch cabinet noise exception;
2) spectrum analysis is carried out to vibration signal and obtains vibration signals spectrograph;
3) by vibration signals spectrograph, detected high-tension switch cabinet noise, the vibration signals spectrograph of vibration signal is compared when normal Judge to be detected whether high-tension switch cabinet extraordinary noise producing cause is unreasonable structure design defect.
2. the unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet according to claim 1, which is characterized in that The vibration measuring point that high-tension switch cabinet is detected in step 1) is located at high-tension switch cabinet three-phase bus row and threading casing corresponding position.
3. the unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet according to claim 1, which is characterized in that Sample frequency is higher than 40kHz when vibration signal in step 1).
4. the unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet according to claim 1, which is characterized in that Vibration signals spectrograph is obtained to vibration signal progress spectrum analysis in step 2 to specifically refer to using Fourier transformation method to vibration Dynamic signal carries out spectrum analysis and obtains vibration signals spectrograph.
5. the unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet according to claim 1, which is characterized in that The detailed step of step 3) includes: by the vibration of vibration signals spectrograph, detected high-tension switch cabinet noise vibration signal when normal Each frequency component amplitude of signal spectrum is compared with changes in distribution, if there is the 50Hz and its integer within the scope of 12kHz The entirety of times harmonic frequency components amplitude greatly improves, and has no that the frequency content other than 50Hz frequency multiplication then determines to be detected high-voltage switch gear Cabinet extraordinary noise producing cause is unreasonable structure design defect.
6. the unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet according to claim 1, which is characterized in that Be detected in step 3) high-tension switch cabinet noise it is normal when vibration signal the demarcating steps of vibration signals spectrograph include: tested The vibration signal for being detected the vibration measuring point of high-tension switch cabinet is acquired when survey high-tension switch cabinet noise is normal, and vibration signal is carried out Spectrum analysis obtain be detected high-tension switch cabinet noise it is normal when vibration signal vibration signal frequency.
7. the unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet according to claim 1, which is characterized in that After judging to be detected high-tension switch cabinet extraordinary noise producing cause in step 3) as unreasonable structure design defect, determining to be detected It further include for detected high pressure in the case where high-tension switch cabinet extraordinary noise producing cause is surveyed as unreasonable structure design defect Switchgear carries out the step of finite element analysis verifying, and detailed step includes:
S1) finite element numerical analysis model is established for detected high-tension switch cabinet;
S2) by finite element numerical analysis model carry out finite element analysis obtain switchgear vibration distribution situation, by apply with The identical boundary condition of actual motion load current is calculated detected height under different harmonic currents and combinations thereof effect and presses off Close each vibration frequency components amplitude and changes in distribution of cabinet;
S3) by each vibration frequency components amplitude of detected high-tension switch cabinet and changes in distribution, step 2 to vibration signal into Each vibration frequency components amplitude that line frequency spectrum analysis obtains vibration signals spectrograph is compared with changes in distribution, if the two one It is unreasonable structure design defect that cause, which then verifies judgement and is detected high-tension switch cabinet extraordinary noise producing cause,.
8. a kind of unreasonable design extraordinary noise diagnostic system of high-voltage switch gear cabinet, including computer equipment, which is characterized in that It is different that the computer equipment is programmed to perform the unreasonable design of high-voltage switch gear cabinet described in any one of claim 1~7 It is stored on the storage medium of the step of normal noise diagnostics method or the computer equipment and is programmed to perform claim 1 The computer program of the unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet described in any one of~7.
9. a kind of computer readable storage medium, which is characterized in that be stored with and be programmed on the computer readable storage medium The calculating of the unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet described in any one of perform claim requirement 1~7 Machine program.
10. a kind of high-tension switch cabinet, including high-tension switch cabinet ontology, which is characterized in that it further include computer equipment, the high pressure Accelerometer is installed, the output end of the accelerometer is connected with computer equipment, the computer equipment in switch cabinet body It is programmed to perform the unreasonable design extraordinary noise diagnosis side of high-voltage switch gear cabinet described in any one of claim 1~7 The step of method;Or it is stored on the storage medium of the computer equipment and is programmed to perform any one of claim 1~7 The computer program of the unreasonable design extraordinary noise diagnostic method of high-voltage switch gear cabinet.
CN201910293730.8A 2019-04-12 2019-04-12 High-voltage switch gear cabinet and its unreasonable design extraordinary noise diagnostic method, system and medium Pending CN110006527A (en)

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Publication number Priority date Publication date Assignee Title
US8849587B1 (en) * 2011-03-14 2014-09-30 Neal Fredrick Lightle System and method for remotely monitoring the health of a transformer
CN108169583A (en) * 2017-11-17 2018-06-15 国网湖南省电力有限公司 Auto-transformer D.C. magnetic biasing method of discrimination and system of the neutral point through capacity earth
CN108693437A (en) * 2018-03-22 2018-10-23 国网湖南省电力有限公司 A kind of method and system judging deformation of transformer winding

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Application publication date: 20190712