CN109507556A - MDS type switchgear fault detection alarm device - Google Patents
MDS type switchgear fault detection alarm device Download PDFInfo
- Publication number
- CN109507556A CN109507556A CN201811622702.8A CN201811622702A CN109507556A CN 109507556 A CN109507556 A CN 109507556A CN 201811622702 A CN201811622702 A CN 201811622702A CN 109507556 A CN109507556 A CN 109507556A
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- type switchgear
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- fault detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 239000000523 sample Substances 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910001935 vanadium oxide Inorganic materials 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 230000036413 temperature sense Effects 0.000 claims 2
- 238000012545 processing Methods 0.000 abstract description 9
- 238000003745 diagnosis Methods 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 abstract description 4
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000002604 ultrasonography Methods 0.000 abstract description 3
- 208000028659 discharge Diseases 0.000 description 29
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Relating To Insulation (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Locating Faults (AREA)
Abstract
The invention discloses a kind of MDS type switchgear fault detection alarm devices, including MDS type switchgear, ultrasonic sensor, ultrahigh frequency partial discharge sensor, infrared temperature probe are installed in MDS type switchgear, ultrasonic sensor, ultrahigh frequency partial discharge sensor, infrared temperature probe signal output end be electrically connected respectively with on-Line Monitor Device, the signal output end of on-line measuring device is electrically connected with backstage warning system.Ultrasound examination, three kinds of infrared measurement of temperature, Partial Discharge Detection means are used in the present invention simultaneously, and real-time diagnosis is carried out using on-line measuring device comprehensive analysis processing, can judge whether MDS type inside switch cabinet occurs generating heat or spark tracking in time, once there is accident sign, related personnel is arranged to go to in-situ processing in time, compared to hand-held artificial detection, accident judges more accurate, and status monitoring is more efficient.
Description
Technical field
The present invention relates to a kind of MDS type switchgear fault detection alarm devices.
Background technique
Become in substation MDS type switchgear the facilities such as arrester, voltage transformer because poor sealing, high temperature dampness reason are easy
Discharge short, hyperthermia and superheating defect occurs.Current transformer substation high-tension switch cabinet is there is not yet the states such as installation partial discharge detection are examined
Disconnected device, especially MDS type switchgear do not consider the application of live detection means, and the model switchs because the date of manufacture is more early
Internal discharge accident easily occurs for cabinet, influences serious.Currently employed hand-held type local-discharge tester or infrared tester carry out band electric-examination
Survey, there is following items drawback: first is that higher to personnel specialty competency profiling, various live detection method study are at high cost；Second is that
Height is required to tour vacuum phase, only high-frequency tour could find the accident defaults such as internal discharge or overheat in time；Third is that every
Secondary make an inspection tour detects that one time consuming time is long to all switchgears, and detection efficiency is low, easy test leakage.
Summary of the invention
This technical problem to be solved in the present invention is to provide one kind can go up installation condition real-time diagnosis switch cabinet state and and
When the MDS type switchgear fault detection alarm device that alerts.
In order to solve the above technical problems, the present invention includes MDS type switchgear, it is structurally characterized in that the MDS type switchgear
Ultrasonic sensor, ultrahigh frequency partial discharge sensor, infrared temperature probe, the ultrasonic sensor, hyperfrequency are inside installed
Partial discharge sensor, infrared temperature probe signal output end be electrically connected respectively with on-Line Monitor Device, on-line checking dress
The signal output end set is electrically connected with backstage warning system.
The ultrasonic sensor, ultrahigh frequency partial discharge sensor, infrared temperature probe are respectively equipped with signal condition list
Member.
The array number of the ultrasonic sensor is 7, and array element centre distance is 5mm, the length and width phase of the array element
Deng.
The ultrasonic sensor is close to setting, the MDS type switchgear on the inside of MDS type switchgear and is made of steel plate, institute
It states ultrasonic sensor and passes through magnet fastening on MDS type switchgear.
The resonance frequency of the ultrahigh frequency partial discharge sensor is 20-180kHz, and sensitivity is 85 [- 75] V (m/s) [V/
Ubar] (dB), output signal is differential signal.
The ultrahigh frequency partial discharge sensor uses the type UHF sensor array of bandspreading.
The back side and side of the ultrahigh frequency partial discharge sensor are made using metal material.
The infrared temperature probe service band is 8~12 μm, and the infrared detector uses vanadium oxide crystal, is surveyed
Warm ken MFOV is 1.
The infrared temperature probe uses thermopile infrared sensor TS118-1.
The shell of the on-line measuring device is made by aluminum alloy materials.
After adopting the above structure, ultrasound examination, three kinds of infrared measurement of temperature, Partial Discharge Detection hands are used in the present invention simultaneously
Section, and real-time diagnosis is carried out using on-line measuring device comprehensive analysis processing, MDS type inside switch cabinet can be judged in time whether
Appearance is generated heat or spark tracking, once there is accident sign, arranges related personnel to go to in-situ processing in time, manually examines compared to hand-held
It surveys, accident judges more accurate, and status monitoring is more efficient.
Detailed description of the invention
Invention is further described in detail with reference to the accompanying drawings and detailed description:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is work flow diagram of the invention；
Fig. 3 is on-line measuring device flow chart of data processing figure.
Specific embodiment
As depicted in figs. 1 and 2, MDS type switchgear fault detection alarm device includes MDS type switchgear 1, MDS type switch
The cable vault 2 positioned at lower part, superposed bus-bar room 3, relay instrument room 4, handcart room 5, peace in switchgear are equipped in cabinet
Equipped with ultrasonic sensor 6, ultrahigh frequency partial discharge sensor 7, infrared temperature probe 8, each sensor in switchgear according to setting
Standby difference is alternatively provided at suitable position, ultrasonic sensor, ultrahigh frequency partial discharge sensor, infrared temperature probe letter
Number output end is electrically connected with on-Line Monitor Device respectively, and signal output end and the backstage warning system of on-line measuring device are electrically connected
It connects.
Ultrasonic sensor includes rectangular piezoelectric chip planar array, sound absorption backing, acoustic matching layer, contact conductor, shell
Deng.The array number of ultrasonic sensor is 7, and array element centre distance is 5mm, to guarantee sensor in length direction and width direction
Consistency, the length and width of array element is equal.Ultrasonic sensor is close to setting, MDS type switchgear on the inside of MDS type switchgear
It is made of steel plate, ultrasonic sensor passes through magnet fastening on MDS type switchgear, to guarantee sensor array and steel plate outer wall
Between coupling it is good.
Shelf depreciation and generated acoustic emission signal have certain randomness, the acoustic signals frequency of each shelf depreciation
Spectrum is different, but the frequency distribution range of entire partial discharge acoustic wave signal is little, is substantially at 20-110kHz frequency range, because
The selection of ultrahigh frequency partial discharge sensor resonant frequency is in 30kHz, maximum width 20-180kHz, sensitivity in this present embodiment
For 85 [- 75] V (m/s) [V/ubar] (dB), output signal is differential signal, strong antijamming capability.Ultrahigh frequency partial discharge sensor
Using the type UHF sensor array of bandspreading, meet electric discharge diagnosis to accuracy, practicability and the requirement of safety.It is effective
The electromagnetic wave signal that insulator leaks out is received, the ultrahigh frequency partial discharge sensor back side and side are made using metal material and are shielded
It covers to inhibit extraneous interference.
Infrared temperature probe service band is 8~12 μm, and infrared detector uses vanadium oxide crystal, the thermometric ken
MFOV is 1, and temperature is accurate to 1 pixel when measuring.The temperature stability of vanadium oxide infrared detector is good, the service life is long, temperature
It drifts about small, measurement range is 0 ° -150 °；Temperature measurement accuracy is ± 1.8%；Response time 250ms.Infrared measurement of temperature passes in the present embodiment
Sensor selects thermopile infrared sensor TS118-1.Thermopile infrared sensor TS118-1 detection object in a non-contact manner
The infrared energy emitted, and corresponding voltage signal output is converted thereof into, STC12C5616AD single-chip microcontroller is used,
The single-chip microcontroller not only has the characteristics that completely compatible traditional 8051 single-chip microcontroller of code, arithmetic speed are fast, but also there are also biggish
The A/D conversion function of RAM, ROM Space and 10,8 tunnels.Therefore, it can reduce the complexity of design and saves component.
Ultrasonic sensor, ultrahigh frequency partial discharge sensor, infrared temperature probe are all made of in the present invention is passed based on dispersion
Feel the Partial Discharge Detection localization method of array signal time delay, sensor is mounted on MDS type inside switch cabinet, comprehensive can examine
The associated components such as contact, voltage transformer, bus and arrester in switchgear are surveyed, and data can be will test by cable with telecommunications
Number be transferred to on-line measuring device, on-line measuring device by more physical quantity synchronous acquisitions, aggregation of data processing, analyze and determine,
Health status is run according to the system parameter assessment equipment of setting, and the failures traces such as fever, electric discharge are uploaded to backstage in time
Machine passes through backstage reporting fault signal.Specific data flowchart is shown in Fig. 3.
Ultrasonic sensor, ultrahigh frequency partial discharge sensor, infrared temperature probe are respectively equipped with signal conditioning unit.It is super
High-frequency signal accesses ultrahigh speed Channels Synchronous Data Acquisition System (sample rate 100M/s), and ultrasonic signal and power frequency component access low speed
Synchronous (sample rate highest 2.5M/s).The acquisition of ultra-high frequency signal is by detecting ultrahigh frequency pulses signal from touching
Hair, while the trigger signal is transferred to multi-path low speed acquisition system, to realize ultrahigh speed acquisition system and low speed acquisition system
Synchronous acquisition.
The shell of on-line measuring device is made by aluminum alloy materials, and high-frequency pulse signal is selected to be transferred to low speed acquisition system
And signal conditioning circuit, signal analysis and processing is carried out using many algorithms.On-line measuring device is by feature extraction to improve office
The accuracy of type identification is put, the characteristic parameter of selection includes impulse-equivalent time-frequency characteristics, pulse multi-dimension line frequency modulation feature, arteries and veins
Characteristics of amplitude distribution, statistical nature etc. are rushed, and by various feature selection approach to reduce feature space dimension, improves mode and knows
Other efficiency.Since the mechanism of various partial discharges is different, partial discharge source range sensor position is different, signal is coupled with route of transmission not
Together, this system obtains the feature video parameter of Partial discharge signal by analytical calculation, and is clustered on this basis, by multi-source office
Discharge signal and interference signal are separated.And fault alarm signal is uploaded to by backstage, O&M based on IEC61850 communication protocol
The defects of personnel have found equipment discharge superheat in MDS type switchgear by backstage alarm signal in time is handled in time.
Ultrasound examination, three kinds of infrared measurement of temperature, Partial Discharge Detection means are used in the present invention simultaneously, and utilizes online inspection
It surveys device comprehensive analysis processing and carries out real-time diagnosis, can judge whether MDS type inside switch cabinet occurs generating heat or discharging in time
Trace arranges related personnel to go to in-situ processing in time once there is accident sign, compares hand-held artificial detection, and accident judges more
Add precisely, status monitoring is more efficient.
In conclusion the present invention is not limited to above-mentioned specific embodiments.Those skilled in the art are not departing from skill of the present invention
Under the premise of art scheme, several changes or modification can be done, above-mentioned change or modification each fall within protection scope of the present invention.
Claims (10)
1. a kind of MDS type switchgear fault detection alarm device, including MDS type switchgear, it is characterized in that the MDS type switchgear
Ultrasonic sensor, ultrahigh frequency partial discharge sensor, infrared temperature probe, the ultrasonic sensor, hyperfrequency are inside installed
Partial discharge sensor, infrared temperature probe signal output end be electrically connected respectively with on-Line Monitor Device, on-line checking dress
The signal output end set is electrically connected with backstage warning system.
2. MDS type switchgear fault detection alarm device according to claim 1, it is characterized in that the supersonic sensing
Device, ultrahigh frequency partial discharge sensor, infrared temperature probe are respectively equipped with signal conditioning unit.
3. MDS type switchgear fault detection alarm device according to claim 1, it is characterized in that the ultrasonic sensor
Array number be 7, array element centre distance is 5mm, and the length and width of the array element is equal.
4. MDS type switchgear fault detection alarm device according to claim 1, it is characterized in that the ultrasonic sensor
It is close to setting, the MDS type switchgear on the inside of MDS type switchgear to be made of steel plate, the ultrasonic sensor is tight by magnet
Gu on MDS type switchgear.
5. MDS type switchgear fault detection alarm device according to claim 1, it is characterized in that the ultrahigh frequency partial discharge passes
The resonance frequency of sensor is 20-180kHz, and sensitivity is 85 [- 75] V (m/s) [V/ubar] (dB), and output signal is difference letter
Number.
6. MDS type switchgear fault detection alarm device according to claim 1, it is characterized in that the ultrahigh frequency partial discharge passes
Sensor uses the type UHF sensor array of bandspreading.
7. MDS type switchgear fault detection alarm device according to claim 6, it is characterized in that the ultrahigh frequency partial discharge passes
The back side and side of sensor are made using metal material.
8. MDS type switchgear fault detection alarm device according to claim 1, it is characterized in that the infrared measurement of temperature senses
Device service band is 8~12 μm, and the infrared detector uses vanadium oxide crystal, and thermometric ken MFOV is 1.
9. MDS type switchgear fault detection alarm device according to claim 8, it is characterized in that the infrared measurement of temperature senses
Device uses thermopile infrared sensor TS118-1.
10. MDS type switchgear fault detection alarm device according to any one of claim 1 to 9, it is characterized in that described
The shell of on-line measuring device is made by aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811622702.8A CN109507556A (en) | 2018-12-28 | 2018-12-28 | MDS type switchgear fault detection alarm device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811622702.8A CN109507556A (en) | 2018-12-28 | 2018-12-28 | MDS type switchgear fault detection alarm device |
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| CN201811622702.8A Pending CN109507556A (en) | 2018-12-28 | 2018-12-28 | MDS type switchgear fault detection alarm device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174600A (en) * | 2019-07-03 | 2019-08-27 | 云南电网有限责任公司电力科学研究院 | GIS detection device and application based on μ PMT combining ultrasonic sensor |
| CN110187244A (en) * | 2019-04-30 | 2019-08-30 | 国网山西省电力公司电力科学研究院 | A kind of fault detection means and method for switchgear |
| CN111507579A (en) * | 2020-03-26 | 2020-08-07 | 国网四川省电力公司电力科学研究院 | Clustering-method-based full-class voltage transformer operation performance evaluation method |
| CN112684293A (en) * | 2020-12-25 | 2021-04-20 | 国网青海省电力公司 | Power distribution system insulation fault diagnosis device |
| CN114113880A (en) * | 2021-11-05 | 2022-03-01 | 国网青海省电力公司检修公司 | Detection method for positioning local discharge fault of high-voltage switch cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110187244A (en) * | 2019-04-30 | 2019-08-30 | 国网山西省电力公司电力科学研究院 | A kind of fault detection means and method for switchgear |
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| CN111507579A (en) * | 2020-03-26 | 2020-08-07 | 国网四川省电力公司电力科学研究院 | Clustering-method-based full-class voltage transformer operation performance evaluation method |
| CN112684293A (en) * | 2020-12-25 | 2021-04-20 | 国网青海省电力公司 | Power distribution system insulation fault diagnosis device |
| CN114113880A (en) * | 2021-11-05 | 2022-03-01 | 国网青海省电力公司检修公司 | Detection method for positioning local discharge fault of high-voltage switch cabinet |
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