CN103336266A - Portable transformer substation noise imaging positioning detection device - Google Patents
Portable transformer substation noise imaging positioning detection device Download PDFInfo
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- CN103336266A CN103336266A CN201310264141XA CN201310264141A CN103336266A CN 103336266 A CN103336266 A CN 103336266A CN 201310264141X A CN201310264141X A CN 201310264141XA CN 201310264141 A CN201310264141 A CN 201310264141A CN 103336266 A CN103336266 A CN 103336266A
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Abstract
The invention discloses a portable transformer substation noise imaging positioning detection device which comprises an imaging displaying mechanism and a noise detection mechanism which are connected via a coaxial cable, the noise detection mechanism comprises a noise sensor of which a matrix is arranged on a quadratic surface structure and a signal pre-treatment circuit; the imaging display mechanism comprises a display, a processor and a data memory connected with the processor; the processor is provided with a sound intensity mapping processing module for driving and displaying a sound intensity mapping figure to quickly judge a noise resource. According to the position of equipment to be detected in a transformer substation, a cubic data module of a quadratic surface is established, a three-dimensional coordinate system is established on the basis of the cubic data module, and pre-treatment and pre-displaying of a relative noise signal are performed, spurious imaging information is used for noise imaging, and quick fault positioning is achieved by analyzing a color ring band. The portable transformer substation noise imaging positioning detection device effectively improves the efficiency of overhauling and maintaining the transformer substation, is simple, convenient and practical, and has very high promotion and application values.
Description
Technical field
The present invention relates to the acoustic positioning equipment technical field, particularly a kind of portable transformer station noise imaging locating and detecting device.
Background technology
Along with Management of Electrical Enterprise becomes more meticulous, serves the standardization of hommization, data, the periodic test of the running status of electric equipment and odd test are required more and more higher, more and more thinner, traditional listening argues that the position has been difficult to solve up hill and dale a site technology problem; Discover that any electrical equipment is in operation, owing to be subjected to the effect of exchange current, all various sound and vibration can take place, these sound and vibration are that operational outfit is peculiar, are a kind of features of indication equipment running status.For example, mostly transformer station is to be in an environment that multiple noise is arranged, and is the power frequency acoustical signal mostly wherein, when equipment breaks down, will inevitably supervene noise signal, and these noises and power frequency acoustical signal are mingled in the environment sound.But, transformer station is again a place that environment is more special simultaneously, be not allow the close equipment of people under the substation operation state, belong to the hazardous location, duration of work forbids that personnel approach, therefore, equipment failure can't be predicted, can't locate after the equipment failure, and is very difficult to the detection of its accident defect.And between regular turn(a)round, the breakthrough that never is resolved of the phenomenon of the failure the when technician can't reappear high pressure again, this problem, can only manually infer by rule of thumb, large tracts of land is exchange device more, but for the location of abnormal sound, only is difficult to accomplish with ear.Just seem particularly important so how under noisy environment, to carry out auditory localization, and also have using value in other industry.At present, the intelligent degree of the lookup method in the extraordinary noise source of transformer station is very low, can't search noise source fast and accurately, fix a breakdown, and reduces the massive losses that equipment failure brings transformer station with this.Machine science and technical journal in June, 2008, the 27 volume the 6th phase " design of the remote vibration signal detection system of ultrasound wave " record: in the plant equipment condition monitoring and fault diagnosis, vibration signal is an important state parameter, article is at piezoelectric type, vibration measurement method and the limitation of instrument in particular surroundings that current vortex sensor etc. are conventional, proposed based on hyperacoustic non-contact detection method, research has also designed system detecting device, this pick-up unit is mainly by ultrasound wave generation module, ultrasound wave receiver module and go to 3 parts of reason to form based on the data acquisition of L abV IEW utilizes this device to carry out telemeasurement to vibrating object.But above-mentioned detection device need utilize vibration to receive carrying out signal again after the ultrasonic signal modulation to vibration object emission ultrasonic signal, handles the localization of faults, the structure relative complex.CN 101865789 A disclose failure detector and the detection method thereof of the near field acoustic holography sound image pattern-recognition in a kind of industrial detection field, comprise microphone array, scanning support, reference source, prop up floor, exciting source and data acquisition system (DAS) admittedly.Utilize machinery normal with malfunction under the variation of sound pressure amplitude and distribution, use for reference the diagnostic imaging technology in the application of other field, the processing of employing image, feature extraction and mode identification technology are handled the near field acoustic holography image.But bigger for the signals collecting amount, data are handled trouble, and accuracy rate is lower, for having relatively high expectations of installing, are not easy to promote the use of simultaneously.
Summary of the invention
The objective of the invention is to address the above problem, the portable transformer station noise imaging locating and detecting device of a kind of convenient observation, handling safety is provided.
For achieving the above object, the technical solution adopted in the present invention is: a kind of portable transformer station noise imaging locating and detecting device, comprise the imaging indication mechanism and the noise detection mechanism that link to each other by concentric cable, described noise detection mechanism comprises that arranged in matrix is in the structural noise transducer of quadric surface and signal pre-processing circuit.
Described imaging indication mechanism comprises display, processor and the data-carrier store that is connected with described processor; Described processor input end connects the output terminal of noise detection mechanism, and the output terminal of described processor connects described display.
Described processor arranges sound intensity mapping processing module, the sound intensity mapping graph passing threshold circuit that described sound intensity mapping processing module generates shows at the pixel of described display with different colours, and the colour circle band that described same color pixel is formed represents identical sound intensity threshold value.
The structural noise transducer quantity of described quadric surface is set to 16 or 32 or 64.
Described signal pre-processing circuit comprises self-adaptation amplifying circuit, low-pass filter circuit, branch frame circuit and windowing circuit, and described minute frame circuit arranges frame and move and be 10ms.
Described noise transducer comprises that shell body, mandrel, inner cover, inner cap, circuit board, piezoelectric ceramics sheet and base constitute, described circuit board is equipped with the impedance conversion amplifying circuit that contains two natural frequency ω n piezoelectric ceramic chip inequality, described inner cover is fixed on the described shell body, described base is fixedlyed connected with described inner cover by mandrel, described piezoelectric ceramic piece is installed on the mandrel, described inner cap is fixed on the inner cover, described circuit board is fixed on and covers in described, and described impedance conversion amplifying circuit connects described signal pre-processing circuit outward.
Described quadric surface structure cambered surface front end circumferentially arranges the tubaeform leading note plate that protracts.
Described quadric surface structure below arranges bracing frame, and the support frame as described above bottom arranges universal wheel, and lift component is set on the support frame as described above.
Described processor connects warning device, and described warning device comprises sound and flash alarm.
The present invention includes the imaging indication mechanism and the noise detection mechanism that link to each other by concentric cable, described noise detection mechanism comprises that arranged in matrix is in the structural noise transducer of quadric surface and signal pre-processing circuit; Described imaging indication mechanism comprises display, processor and the data-carrier store that is connected with described processor; Described processor input end connects the output terminal of noise detection mechanism, and the output terminal of described processor connects described display; Gather the spherical wave signal of described vibration noise source signal by the structural noise transducer of described quadric surface, utilize its spatial structure to position, the binding signal pre-process circuit, determine noise source information and carry out post-processed and demonstration, make things convenient for fault diagnosis and early warning analysis, improve the transformer substation system safe operation;
Described processor arranges sound intensity mapping processing module, described sound intensity mapping graph passing threshold circuit shows at the pixel of described display with different colours, the colour circle band that described same color pixel is formed represents identical sound intensity threshold value, show that the result is clear, be user-friendly for and observe and analyze, have significant meaning for rapid failure diagnosis;
The structural noise transducer quantity of described quadric surface is set to 16 or 32 or 64, not only is convenient to the data of gathering are carried out the scale-of-two Treatment Analysis, and arranges standard;
Described signal pre-processing circuit comprises self-adaptation amplifying circuit, low-pass filter circuit, branch frame circuit and windowing circuit, by signal is amplified, low-pass filtering filtering high frequency and multiple frequence signal then, reduce the interference of high frequency and frequency-doubled signal, alleviate the data analysis difficulty, and be that data are carried out quantitative analysis and demonstration with minute frame circuit and windowing circuit to collection, be convenient to form the basic data information of sound intensity mapping graph;
Described noise transducer comprises shell body, mandrel, inner cover, inner cap, circuit board, piezoelectric ceramics sheet and base constitute, described circuit board is equipped with the impedance conversion amplifying circuit that contains two natural frequency ω n piezoelectric ceramic chip inequality, described inner cover is fixed on the described shell body, described base is fixedlyed connected with described inner cover by mandrel, described piezoelectric ceramic piece is installed on the mandrel, described inner cap is fixed on the inner cover, described circuit board is fixed on and covers in described, described impedance conversion amplifying circuit connects described signal pre-processing circuit outward, frequency response range than the pickup head of piezoelectric ceramics sheet class is wideer, reference frequency output than single piezoelectric patches probe can increase to about 2 times, it receives that energy is big, mechanical activation amplitude is strong, so piezoelectric ceramic piece produces stronger electric signal, has improved the high sensitivity to signals collecting; Its interference to sound in the air simultaneously can improve 15～25 decibels;
Described quadric surface structure cambered surface front end circumferentially arranges the tubaeform leading note plate that protracts, and not only can improve the accuracy of collecting signal, also can reduce the stack of other noise signals in the non-sensing range and disturb accuracy and reliability that influence is judged;
Described quadric surface structure below arranges bracing frame, and the support frame as described above bottom arranges universal wheel, the distance of adjustment and detected object when can conveniently use, and transportation, easy to carry; Lift component is set on the support frame as described above, can tentatively adjusts according to the height at detected position, improve detection accuracy;
Described processor connects warning device, described warning device comprises sound and flash alarm, at processor signal being handled the back is analyzed in conjunction with the data message in the data-carrier store, preliminary early warning failure message the good basis condition that provides accurately is provided for follow-up information according to sound intensity mapping graph.
Noise signal being obtained and handled separately of novelty of the present invention, characteristics such as that system front end noise signal acquisition component has is portable, accurate positioning, pre-service are rapid are handled, display unit has feature richness, it is detailed to show, early warning functional advantage timely.The portable transformer station of the present invention noise imaging locating and detecting device has fundamentally solved the accurately early warning of substation equipment fault, abort situation such as can not accurately judge at a difficult problem, can provide technical guarantee in time grasping substation equipment ruuning situation, for the accurate judgement of equipment failure point provides theoretical foundation.This detecting system also has following characteristics:
1) gathers and handle separately, guaranteed the accuracy of noise source location;
2) time of arrival, acquisition module adopted the devices at full hardware circuit to realize, had guaranteed data information transfer processing reliability and locating accuracy;
3) clock and timing are carried out clock alignment with center-side, guarantee the accuracy of clock;
4) can store information, the action status information of being convenient to post analysis and print record is as noise source position coordinates, noise source time of occurrence, noise source rack information of living in etc.;
5) making of equipment set device is small and exquisite, exquisite, and on-the-spot installation wiring is simpler, convenient.
The present invention is according to transformer station Devices to test position, set up quadric cube model metadata, set up three-dimensional system of coordinate based on this model, at at least 16 noise transducers of each fixed position setting of this model, and correlated noise signal is carried out pre-service handle with showing, utilize pseudo-image information to carry out imaging, obtain simulation panorama noise signal and also realize the noise imaging, and utilize the colour circle band to make analysis easy, can realize quick localization of fault.Checking draws transformer station's static object and the noise respective objects of detection and coincide noise image-forming information fiduciary level height mutually.The present invention is by being beneficial to the ultrasonic listening location, and described imaging indication mechanism and noise detection mechanism are set to the structure of one, having solved people's ear effectively can't consciousness and the transformer station abnormal vibrations of location, guarantee that equipment operates under the normal state, before operation troubles appears in equipment, find problem and solution to fall, prevent trouble before it happens, effectively improved the work efficiency of transformer station's repair and maintenance, the simple and practical efficient height of the present invention has the excellent popularization using value.
Description of drawings
The present invention is described further below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of portable transformer station noise imaging locating and detecting device among the present invention;
Fig. 2 is that the signal of portable transformer station noise imaging locating and detecting device among the present invention is handled block diagram.
Embodiment
Specific embodiment one
As depicted in figs. 1 and 2, a kind of portable transformer station noise imaging locating and detecting device, comprise the imaging indication mechanism and the noise detection mechanism that link to each other by concentric cable, described noise detection mechanism comprises noise transducer 12 and the signal pre-processing circuit of arranged in matrix on quadric surface structure 1, and described noise transducer 2 quantity are set to 32.
Described imaging indication mechanism comprises display 2, processor 3 and the data-carrier store 4 that is connected with described processor 3; Described processor 3 input ends connect the output terminal of noise detection mechanism, and the output terminal of described processor 3 connects described display 2.
Described processor 3 arranges sound intensity mapping processing module 5, the sound intensity mapping graph passing threshold circuit that described sound intensity mapping processing module 5 generates shows at the pixel of described display 2 with different colours, the identical sound intensity threshold value of colour circle band 6 representatives that described same color pixel is formed.
Described signal pre-processing circuit comprises self-adaptation amplifying circuit, low-pass filter circuit, branch frame circuit and windowing circuit, and described minute frame circuit arranges frame and move and be 10ms.
Described noise transducer 12 comprises that shell body, mandrel, inner cover, inner cap, circuit board, piezoelectric ceramics sheet and base constitute, described circuit board is equipped with the impedance conversion amplifying circuit that contains two natural frequency ω n piezoelectric ceramic chip inequality, described inner cover is fixed on the described shell body, described base is fixedlyed connected with described inner cover by mandrel, described piezoelectric ceramic piece is installed on the mandrel, described inner cap is fixed on the inner cover, described circuit board is fixed on and covers in described, and described impedance conversion amplifying circuit connects described signal pre-processing circuit outward.
The cambered surface front end of described quadric surface structure 1 circumferentially arranges the tubaeform leading note plate 7 that protracts.
Described quadric surface structure 1 below arranges bracing frame 8, and support frame as described above 8 bottoms arrange universal wheel 9, and lift component 10 is set on the support frame as described above 8.
Described processor 3 connects warning device 11, and described warning device 11 comprises sound and flash alarm.
Specific embodiment two
Only be with specific embodiment one difference: noise transducer 2 quantity on the described quadric surface structure 1 are set to 16 or 64.
In above-described embodiment, the present invention includes the imaging indication mechanism and the noise detection mechanism that link to each other by concentric cable, described noise detection mechanism comprises noise transducer 12 and the signal pre-processing circuit of arranged in matrix on quadric surface structure 1; Described imaging indication mechanism comprises display 2, processor 3 and the data-carrier store 4 that is connected with described processor 3; Described processor 3 input ends connect the output terminal of noise detection mechanism, and the output terminal of described processor 3 connects described display 2; Gather the spherical wave signal of described vibration noise source signal by the noise transducer 12 on the described quadric surface structure 1, utilize its spatial structure to position, the binding signal pre-process circuit, determine noise source information and carry out post-processed and demonstration, make things convenient for fault diagnosis and early warning analysis, improve the transformer substation system safe operation;
Described processor 3 arranges sound intensity mapping processing module 5, described sound intensity mapping graph passing threshold circuit shows at the pixel of described display 2 with different colours, the identical sound intensity threshold value of colour circle band 6 representatives that described same color pixel is formed, show that the result is clear, be user-friendly for and observe and analyze, have significant meaning for rapid failure diagnosis;
Described signal pre-processing circuit comprises self-adaptation amplifying circuit, low-pass filter circuit, branch frame circuit and windowing circuit, by signal is amplified, low-pass filtering filtering high frequency and multiple frequence signal then, reduce the interference of high frequency and frequency-doubled signal, alleviate the data analysis difficulty, and be that data are carried out quantitative analysis and demonstration with minute frame circuit and windowing circuit to collection, be convenient to form the basic data information of sound intensity mapping graph;
Described noise transducer 12 comprises shell body, mandrel, inner cover, inner cap, circuit board, piezoelectric ceramics sheet and base constitute, described circuit board is equipped with the impedance conversion amplifying circuit that contains two natural frequency ω n piezoelectric ceramic chip inequality, described inner cover is fixed on the described shell body, described base is fixedlyed connected with described inner cover by mandrel, described piezoelectric ceramic piece is installed on the mandrel, described inner cap is fixed on the inner cover, described circuit board is fixed on and covers in described, described impedance conversion amplifying circuit connects described signal pre-processing circuit outward, frequency response range than the pickup head of piezoelectric ceramics sheet class is wideer, reference frequency output than single piezoelectric patches probe can increase to about 2 times, it receives that energy is big, mechanical activation amplitude is strong, so piezoelectric ceramic piece produces stronger electric signal, has improved the high sensitivity to signals collecting; Its interference to sound in the air simultaneously can improve 15～25 decibels;
Described quadric surface structure 1 cambered surface front end circumferentially arranges the tubaeform leading note plate 7 that protracts, and not only can improve the accuracy of collecting signal, also can reduce the stack of other noise signals in the non-sensing range and disturb accuracy and reliability that influence is judged;
Described quadric surface structure 1 below arranges bracing frame 8, and support frame as described above 8 bottoms arrange universal wheel 9, the distance of adjustment and detected object when can conveniently use, and transportation, easy to carry; Lift component 10 is set on the support frame as described above 8, can tentatively adjusts according to the height at detected position, improve detection accuracy;
Described processor 3 connects warning device 11, described warning device 11 comprises sound and flash alarm, handling the back at 3 pairs of signals of processor is analyzed in conjunction with the data message in the data-carrier store 4, preliminary early warning failure message the good basis condition that provides accurately is provided for follow-up information according to sound intensity mapping graph.
Noise signal being obtained and handled separately of novelty of the present invention, characteristics such as that system front end noise signal acquisition component has is portable, accurate positioning, pre-service are rapid are handled, display unit has feature richness, it is detailed to show, early warning functional advantage timely.The portable transformer station of the present invention noise imaging locating and detecting device has fundamentally solved the accurately early warning of substation equipment fault, abort situation such as can not accurately judge at a difficult problem, can provide technical guarantee in time grasping substation equipment ruuning situation, for the accurate judgement of equipment failure point provides theoretical foundation.This detecting system also has following characteristics:
1) gathers and handle separately, guaranteed the accuracy of noise source location;
2) time of arrival, acquisition module adopted the devices at full hardware circuit to realize, had guaranteed data information transfer processing reliability and locating accuracy;
3) clock and timing are carried out clock alignment with center-side, guarantee the accuracy of clock;
4) can store information, the action status information of being convenient to post analysis and print record is as noise source position coordinates, noise source time of occurrence, noise source rack information of living in etc.;
5) making of equipment set device is small and exquisite, exquisite, and on-the-spot installation wiring is simpler, convenient.
The present invention is according to transformer station Devices to test position, set up quadric cube model metadata, set up three-dimensional system of coordinate based on this model, at at least 16 noise transducers of each fixed position setting of this model 12, and correlated noise signal is carried out pre-service handle with showing, utilize pseudo-image information to carry out imaging, obtain simulation panorama noise signal and also realize the noise imaging, and utilize colour circle band 6 to make analysis easy, can realize quick localization of fault.Checking draws transformer station's static object and the noise respective objects of detection and coincide noise image-forming information fiduciary level height mutually.The present invention is by being beneficial to the ultrasonic listening location, and described imaging indication mechanism and noise detection mechanism are set to the structure of one, having solved people's ear effectively can't consciousness and the transformer station abnormal vibrations of location, guarantee that equipment operates under the normal state, before operation troubles appears in equipment, find problem and solution to fall, prevent trouble before it happens, effectively improved the work efficiency of transformer station's repair and maintenance, the simple and practical efficient height of the present invention has the excellent popularization using value.
Claims (8)
1. portable transformer station noise imaging locating and detecting device, it is characterized in that: comprise the noise detection mechanism and the imaging indication mechanism that link to each other by concentric cable, described noise detection mechanism comprises that arranged in matrix is in the structural noise transducer of quadric surface and signal pre-processing circuit; Described imaging indication mechanism comprises display, processor and the data-carrier store that is connected with described processor, and described processor input end connects the output terminal of noise detection mechanism, and the output terminal of described processor connects described display.
2. portable transformer station noise imaging locating and detecting device according to claim 1, it is characterized in that: described processor arranges sound intensity mapping processing module, the sound intensity mapping graph passing threshold circuit that described sound intensity mapping processing module generates shows at the pixel of described display with different colours, and the colour circle band that described same color pixel is formed represents identical sound intensity threshold value.
3. portable transformer station noise imaging locating and detecting device according to claim 1, it is characterized in that: the structural noise transducer quantity of described quadric surface is set to 16 or 32 or 64.
4. portable transformer station noise imaging locating and detecting device according to claim 1, it is characterized in that: described signal pre-processing circuit comprises self-adaptation amplifying circuit, low-pass filter circuit, branch frame circuit and windowing circuit, and described minute frame circuit arranges frame and move and be 10ms.
5. portable transformer station noise imaging locating and detecting device according to claim 1, it is characterized in that: described noise transducer comprises shell body, mandrel, inner cover, inner cap, circuit board, piezoelectric ceramics sheet and base constitute, described circuit board is equipped with the impedance conversion amplifying circuit that contains two natural frequency ω n piezoelectric ceramic chip inequality, described inner cover is fixed on the described shell body, described base is fixedlyed connected with described inner cover by mandrel, described piezoelectric ceramic piece is installed on the mandrel, described inner cap is fixed on the inner cover, described circuit board is fixed on and covers in described, and described impedance conversion amplifying circuit connects described signal pre-processing circuit outward.
6. portable transformer station noise imaging locating and detecting device as described in arbitrary as claim 1-5 is characterized in that: described quadric surface structure cambered surface front end circumferentially arranges the tubaeform leading note plate that protracts.
7. portable transformer station noise imaging locating and detecting device as described in arbitrary as claim 1-5 is characterized in that: described quadric surface structure below arranges bracing frame, and the support frame as described above bottom arranges universal wheel, and lift component is set on the support frame as described above.
8. portable transformer station noise imaging locating and detecting device as described in arbitrary as claim 1-5 is characterized in that: described processor connects warning device, and described warning device comprises sound and flash alarm.
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| CN104457972A (en) * | 2014-11-28 | 2015-03-25 | 长城汽车股份有限公司 | Noise detecting method and system of air conditioner for car and car |
| CN108716948A (en) * | 2018-06-27 | 2018-10-30 | 西安输变电工程环境影响控制技术中心有限公司 | A kind of substation's noise synthesis cloud atlas test device |
| CN108760034A (en) * | 2018-05-21 | 2018-11-06 | 广西电网有限责任公司电力科学研究院 | A kind of transformer vibration noise source positioning system and method |
| CN109141619A (en) * | 2017-06-27 | 2019-01-04 | 株洲中车时代电气股份有限公司 | A kind of noise measuring method for rail traffic current transformer |
| CN111397727A (en) * | 2020-03-23 | 2020-07-10 | 深圳供电局有限公司 | Vehicle-mounted detection equipment for measuring sound field of transformer |
| CN111579074A (en) * | 2020-06-20 | 2020-08-25 | 孔洁 | Electronic information combination equipment |
| CN117310320A (en) * | 2023-09-25 | 2023-12-29 | 国网山东省电力公司莘县供电公司 | Portable high-voltage equipment fault sound inspection device and fault detection method |
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Cited By (8)
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| CN111397727A (en) * | 2020-03-23 | 2020-07-10 | 深圳供电局有限公司 | Vehicle-mounted detection equipment for measuring sound field of transformer |
| CN111579074A (en) * | 2020-06-20 | 2020-08-25 | 孔洁 | Electronic information combination equipment |
| CN117310320A (en) * | 2023-09-25 | 2023-12-29 | 国网山东省电力公司莘县供电公司 | Portable high-voltage equipment fault sound inspection device and fault detection method |
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Application publication date: 20131002 |