CN209356622U - MDS type switchgear fault detection alarm device - Google Patents
MDS type switchgear fault detection alarm device Download PDFInfo
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- CN209356622U CN209356622U CN201822232196.3U CN201822232196U CN209356622U CN 209356622 U CN209356622 U CN 209356622U CN 201822232196 U CN201822232196 U CN 201822232196U CN 209356622 U CN209356622 U CN 209356622U
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- mds
- fault detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
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- 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
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Abstract
The utility model 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 utility model 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 utility model 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
The technical problem to be solved by the present invention is to provide one kind can go up installation condition real-time diagnosis switch cabinet state for this
And the MDS type switchgear fault detection alarm device alerted in time.
In order to solve the above technical problems, the utility model includes MDS type switchgear, it is structurally characterized in that the MDS type is opened
It closes and ultrasonic sensor, ultrahigh frequency partial discharge sensor, infrared temperature probe is installed in cabinet, the ultrasonic sensor surpasses
High frequency partial discharge sensor, infrared temperature probe signal output end be electrically connected respectively with on-Line Monitor Device, the online inspection
The signal output end for surveying device 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 temperature probe uses vanadium oxide crystal,
Its thermometric 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, infrared measurement of temperature, Partial Discharge Detection three are used in the utility model simultaneously
Kind means, 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, is arranged related personnel to go to in-situ processing in time, is compared hand-held people
Work detection, accident judges more accurate, and status monitoring is more efficient.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and detailed description:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the work flow diagram of the utility model；
Fig. 3 is on-line measuring device flow chart of data processing figure.
Specific embodiment
As depicted in figs. 1 and 2, which includes MDS type switchgear 1, and MDS type is opened
It closes and is equipped with the cable vault 2 positioned at lower part, superposed bus-bar room 3, relay instrument room 4, handcart room 5 in cabinet, in switchgear
Ultrasonic sensor 6, ultrahigh frequency partial discharge sensor 7, infrared temperature probe 8 are installed, each sensor is according in switchgear
The difference of equipment is alternatively provided at suitable position, ultrasonic sensor, ultrahigh frequency partial discharge sensor, infrared temperature probe
Signal 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, which are all made of, in the utility model is based on dividing
The Partial Discharge Detection localization method of sensor array signal time delay is dissipated, sensor is mounted on MDS type inside switch cabinet, can be entirely square
The associated components such as contact, voltage transformer, bus and arrester in the detection switch cabinet of position, and can will test data by cable with
Electric signal transmission is sentenced to on-line measuring device, on-line measuring device by more physical quantity synchronous acquisitions, aggregation of data processing, analysis
It is disconnected, health status is run according to the system parameter assessment equipment of setting, and will be after the failures trace such as fever, electric discharge is uploaded in time
Platform 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 utility model simultaneously, and is utilized
Line detector comprehensive analysis processing carries out real-time diagnosis, can judge in time MDS type inside switch cabinet whether occur generating heat or
Spark tracking arranges related personnel to go to in-situ processing in time once there is accident sign, compares hand-held artificial detection, and accident is sentenced
Break more accurate, status monitoring is more efficient.
In conclusion the utility model is not limited to above-mentioned specific embodiment.Those skilled in the art are not departing from this reality
Under the premise of with new technique scheme, several changes or modification can be done, above-mentioned change or modification each fall within the guarantor of the utility model
Protect range.
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 temperature probe 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822232196.3U CN209356622U (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 |
|---|---|---|---|
| CN201822232196.3U CN209356622U (en) | 2018-12-28 | 2018-12-28 | MDS type switchgear fault detection alarm device |
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| CN209356622U true CN209356622U (en) | 2019-09-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507556A (en) * | 2018-12-28 | 2019-03-22 | 国网山东省电力公司高密市供电公司 | MDS type switchgear fault detection alarm device |
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2018
- 2018-12-28 CN CN201822232196.3U patent/CN209356622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507556A (en) * | 2018-12-28 | 2019-03-22 | 国网山东省电力公司高密市供电公司 | MDS type switchgear fault detection alarm device |
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