CN208654277U - A kind of high-tension switch cabinet local discharge on-line monitoring device - Google Patents
A kind of high-tension switch cabinet local discharge on-line monitoring device Download PDFInfo
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- CN208654277U CN208654277U CN201821362885.XU CN201821362885U CN208654277U CN 208654277 U CN208654277 U CN 208654277U CN 201821362885 U CN201821362885 U CN 201821362885U CN 208654277 U CN208654277 U CN 208654277U
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- switch cabinet
- sensor
- tension switch
- line monitoring
- monitoring device
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Abstract
The utility model relates to a kind of high-tension switch cabinet local discharge on-line monitoring devices, comprising: device host, data collecting card, alarm module, wireless communication module, combined type TEV-AE sensor, filter, amplifier, wave detector, coaxial cable and built-in, external type UHF sensor and electronic display.Combined type TEV-AE sensor is connected through amplifier and coaxial cable with data collecting card, built-in, external type UHF sensor is connected through filter, amplifier, wave detector and coaxial cable with data collecting card, and data collecting card, alarm module, wireless communication module and electronic display are connected with device host.The combined type TEV-AE sensor of the utility model is easy for installation, and multiple sensors measure shelf depreciation, and signal detection coverage area is wide, improves the accuracy of partial discharge monitoring；Coaxial cable transmission provides stronger sensitivity and anti-interference ability；Wave detector has ensured that data collecting card detects uhf band signal validity.
Description
Technical field
The invention belongs to high voltage power distribution technical fields, specifically, being related to a kind of high-tension switch cabinet partial discharge monitoring
Device.
Background technique
Important foundation unit of the high-tension switch cabinet as system for distribution network of power network, operating condition affect entire electric power
The reliability of system, therefore guarantee that its reliable and stable operation is particularly significant.According to statistics discovery in recent years, high-tension switch cabinet accident master
If shelf depreciation occurs the sign before insulation fault, the part of high-tension switch cabinet as equipment as caused by insulation fault
Electric discharge monitoring can find the insulation fault of switchgear in time, and then reduce the failure accident of high-tension switch cabinet.Height is pressed off at present
The measurement of cabinet partial discharge is closed, mostly uses the methods of transient earth voltage measurement, ultrasonic measurement and hyperfrequency measurement, and typically cabinet greatly
External pelivimetry, and high-tension switch cabinet operation spot jamming resource is more, and measurement result can be made by certain interference, in addition cabinet external pelivimetry
When, the effect for receiving signal is also poor with respect in cabinet, and measurement parameter is relatively single, and to also result in measurement result accuracy not high.
Summary of the invention
The utility model is in view of the above-mentioned problems, provide a kind of high-tension switch cabinet local discharge on-line monitoring device, the monitoring
Device measures Partial discharge signal simultaneously out of cabinet and outside cabinet respectively, on the one hand improves the reliability of measurement result, on the other hand adopts
It is more convenient in installation with combined type TEV-AE sensor, and the deficiency of single signal measurement is overcome, in a variety of letters
On the basis of number comprehensive analysis, keep the differentiation of high-tension switch cabinet partial discharge situation more accurate.
To achieve the above object, the utility model adopts the technical scheme that a kind of high-tension switch cabinet shelf depreciation exists
Line monitoring device, it is characterised in that: including device host, data collecting card, alarm module, wireless communication module, combined type
TEV-AE sensor, built-in type UHF sensor, external type UHF sensor, filter, amplifier, wave detector, electronic display and same
Shaft cable.Combined type TEV-AE sensor is connected by amplifier and coaxial cable with data collecting card, and built-in, external UHF is passed
Sensor passes through filter, amplifier, wave detector and coaxial cable respectively and is connected with data collecting card, data collecting card and device
Host is connected, and alarm module, wireless communication module, electronic display are connected with device host.
The device host uses the built-in industrial control machine of high-performance CPU, is handled using Intel Intel Core i5 or more
Device, dominant frequency are 2.7GHz or more.
The data collecting card is HS6DIFF-200 high-speed data acquisition card, meets USB3.0 interface standard, has 4
Road synchronously simulating amount input channel, 4 Channel Synchronous sample frequencys up to 50MS/s, using BNC socket connector respectively with sensing
Device connection, is connect using the 4 line USB cables with shielding with device host.Data collecting card acquisition combined type TEV-AE sensor,
Built-in type UHF sensor and the transformed Partial discharge signal of external type UHF sensor, and it is transferred to device host.
The alarm module is buzzer siren.If device Host Detection is exceeded to partial discharge degree, alarm module is connect
Receiving apparatus host command issues buzzing alarming sound.
The wireless communication module is DW-M1F wireless receiver, using metal shell, anti-electromagnetic interference capability
By force, it is very suitable to Long-range Data Transmission, interface supports RS232 and RS485 serial line interface transmission standard.Wireless communication module with
Device host is connected.
The combined type TEV-AE sensor model number is TWTA-01, has been internally integrated TEV signal detector and ultrasound letter
Number detector, can easily realize the detection and positioning to Partial discharge signal.Combined type TEV-AE sensor by filter and
Coaxial cable is connected with data collecting card.
The built-in type UHF sensor uses butterfly antenna, with small in size, broadband properties and planar structure and surely
Fixed feature is very suitable to be placed in the narrow inner space of high-tension switch cabinet.Built-in type UHF sensor passes sequentially through filtering
Device, amplifier, wave detector are connected with data collecting card.
The external type UHF sensor uses Archimedian spiral antenna, and with broadband, size is small, high-efficient
Characteristic, the partial discharge superfrequency suitable for more gas insulated metal enclosed swit chgear detect.External type UHF sensor pass sequentially through filter,
Amplifier, wave detector are connected with data collecting card.
The filter is microstrip bandpass filter, can pass through 500MHz~1500MHz signal.
The amplifier has many advantages, such as that transmission frequency is high, noise is low, high gain, working frequency be able to satisfy 400MHz~
3GHz, gain amplifier reach 20dB or more.
The wave detector is highly sensitive zero offset Schottky diode envelope detector, mainly low by diode and RC
Bandpass filter composition can export the frequency electromagnetic waves that partial discharge generates for the lower pulse envelope of frequency.
The coaxial cable is RG316 radio frequency line, and characteristic impedance is 50 Ω.
The electronic display is 6 inch liquid crystal colorful display screens, is connected with device host by liquid crystal winding displacement, works as inspection
When measuring partial discharge of switchgear generation, prompt information is exported in electrical screen.
The good effect of the utility model: (1) discharge signal is simultaneously measured by built-in, outer sensor, improves office
The reliability of discharge signal capture, avoids detection leakage phenomenon in monitoring.(2) more convenient using compound transducer installation, and overcome
The single-sensor deficiency sensitive to signal specific, while being transmitted using coaxial cable, anti-interference ability is stronger.(3) device
Host synchronization acquires 4 channel signals, using more than two channels alarms statistics alarm method, avoids false alarm and fails to report police, mention
High partial discharge of switchgear discriminant accuracy.
Detailed description of the invention
Fig. 1 is a kind of high-tension switch cabinet on-Line Monitor Device connection schematic diagram of this example.
Wherein, 1. device host, 2. data collecting cards, 3. alarm modules, 4. wireless communication modules, 5. combined type TEV-AE
Sensor, type UHF sensor built in 6., 7. external type UHF sensors, 8. amplifiers, 9. filters, 10. wave detectors, 11. electronic displays
Display screen, 12. coaxial cables.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
A kind of high-tension switch cabinet local discharge on-line monitoring device, by the combined type TEV-AE for being mounted on switchgear surface
Sensor, built-in and external type UHF sensor acquire the transient earth voltage signal of partial discharge generation, ultrasonic signal and extra-high respectively
Frequency electromagnetic waves signal enters amplifier through coaxial cable and is then fed into data collecting card, or successively passes through along coaxial cable
Filter, amplifier, wave detector are sent into capture card indirectly, and collected various Partial discharge signals are transferred to device master by capture card
Machine, the signal that device host process is collected into calculate the degree of partial discharge and judge the position of partial discharge, if partial discharge degree is super
Preset value is crossed, device host sends instructions to alarm module, and alarm module issues buzzing warning, and exports in electrical screen
Prompt information, and notify that operation maintenance personnel is overhauled by wireless communication module.
As shown in Figure 1, the device of the utility model includes: device host 1, data collecting card 2, alarm module 3, channel radio
Interrogate module 4, combined type TEV-AE sensor 5, built-in type UHF sensor 6, external type UHF sensor 7, amplifier 8, filter 9, inspection
Wave device 10, electronic display 11, coaxial cable 12.
The combined type TEV-AE sensor model number is TWTA-01, has been internally integrated TEV signal detector and ultrasound letter
Number detector, can easily realize the detection and positioning to partial discharge.Combined type TEV-AE sensor detects high-tension switch cabinet office
The transient earth voltage signal and ultrasonic signal for putting generation are sent directly into data after the amplification of amplifier noise reduction along coaxial cable and adopt
Truck.
The built-in type UHF sensor uses butterfly antenna, with small in size, broadband properties and planar structure and surely
Fixed feature is very suitable to be placed in the narrow inner space of high-tension switch cabinet.Built-in type UHF sensor detection height presses off in cabinet
The partial discharge ultra-high frequency signal of side passes sequentially through filter, amplifier, wave detector along coaxial cable and is sent into data collecting card.
The external type UHF sensor uses Archimedian spiral antenna, and with broadband, size is small, high-efficient
Characteristic, the partial discharge superfrequency suitable for more gas insulated metal enclosed swit chgear detect.Outside external type UHF sensor detection high-tension switch cabinet
The super partial discharge high-frequency signal of side passes sequentially through filter, amplifier, wave detector along coaxial cable and is sent into data collecting card phase
Even.
The filter is microstrip bandpass filter, can pass through 500MHz~1500MHz signal.
The amplifier has many advantages, such as that transmission frequency is high, noise is low, high gain, working frequency be able to satisfy 400MHz~
3GHz, gain amplifier reach 20dB or more.
The wave detector is highly sensitive zero offset Schottky diode envelope detector, mainly low by diode and RC
The frequency electromagnetic waves that partial discharge generates can be exported as the lower pulse envelope of frequency, make sample frequency 50MS/ by bandpass filter composition
The data collecting card of s can detect uhf band local discharge signal.
The data collecting card is HS6DIFF-200 high-speed data acquisition card, has the input of 4 road synchronously simulating amounts logical
Road, 4 Channel Synchronous sample frequencys are connect with sensor respectively using BNC socket connector up to 50MS/s, analog quantity, are used
USB3.0 standard is connect with device host.Collected various Partial discharge signals are transferred to device host according to capture card.
The device host uses high-performance CPU built-in industrial control machine, using Intel Intel Core i5 and the above processor,
Dominant frequency is 2.7GHz or more.Device host controls HS6DIFF-200 capture card using external trigger mode, when sensor exports
Analog quantity, which is greater than, to be preset threshold value and then starts high-speed data acquisition process, and the width of four input channels acquisition signals is then compared
Value and spike appearance position, if threshold value is exceeded to be determined as that shelf depreciation occurs there are two being exceeded with upper channel appearance；According to putting
Electric signal amplitude and frequency statistics result calculate the severity that partial discharge occurs for high-tension switch cabinet, and confirmation can after shelf depreciation occurs
To show on the electronic display screen as a result, and exporting alarm signal using alarm module.
The alarm module is buzzer siren.If device Host Detection is exceeded to partial discharge degree, alarm module is connect
Receiving apparatus host command issues buzzing alarming sound.
The wireless communication module is DW-M1F wireless receiver, using metal shell, anti-electromagnetic interference capability
By force, it is very suitable to Long-range Data Transmission, interface supports RS232 and RS485 serial line interface transmission standard.If device Host Detection
It is exceeded to partial discharge degree, then inform that operation maintenance personnel repairs by wireless communication module.
The coaxial cable is RG316 radio frequency line, and characteristic impedance is 50 Ω.
The electronic display is 6 inch liquid crystal colorful display screens, is connected with device host by liquid crystal winding displacement, is detected
Information warning is provided when exceeded to switch cabinet partial discharge on the screen, informs that operator on duty arranges maintenance.
Claims (10)
1. a kind of high-tension switch cabinet local discharge on-line monitoring device, it is characterised in that: including device host, data collecting card,
Alarm module, wireless communication module, combined type TEV-AE sensor, built-in type UHF sensor, external type UHF sensor, filter,
Amplifier, wave detector, electronic display and coaxial cable；Combined type TEV-AE sensor passes through amplifier and coaxial cable and number
It is connected according to capture card, built-in, external type UHF sensor passes through filter, amplifier, wave detector and coaxial cable and data respectively
Capture card is connected, and data collecting card is connected with device host, alarm module, wireless communication module, electronic display and device master
Machine is connected.
2. a kind of high-tension switch cabinet local discharge on-line monitoring device according to claim 1, it is characterised in that: described
Device host uses high-performance CPU built-in industrial control machine, using Intel Intel Core i5 and the above processor, dominant frequency be 2.7GHz and
More than；Device host has the multiple sensor signals of synchronous acquisition, control electronic display, driving alarm and radio alarm information
The function of transmission；Differentiate that shelf depreciation uses two channels or more that partial discharge, alarm mode after statistical disposition occur simultaneously.
3. a kind of high-tension switch cabinet local discharge on-line monitoring device according to claim 1, it is characterised in that: described
Data collecting card is HS6DIFF-200 high-speed data acquisition card, has 4 road synchronously simulating amount input channels, the sampling of 4 Channel Synchronous
Frequency is connect with sensor up to 50MS/s using BNC socket connector respectively, using USB3.0 standard interface and device host
Connection.
4. a kind of high-tension switch cabinet local discharge on-line monitoring device according to claim 1, it is characterised in that: described
Wireless communication module is DW-M1F wireless receiver, and using metal shell, anti-electromagnetic interference capability is strong, is very suitable to long distance
It is transmitted from data, interface supports RS232 and RS485 serial line interface transmission standard.
5. a kind of high-tension switch cabinet local discharge on-line monitoring device according to claim 1, it is characterised in that: described
Combined type TEV-AE sensor model number is TWTA-01, has been internally integrated TEV signal detector and ultrasonic signal detector, energy
Enough convenient detections and positioning realized to Partial discharge signal.
6. a kind of high-tension switch cabinet local discharge on-line monitoring device according to claim 1, it is characterised in that: described
Built-in type UHF sensor uses butterfly antenna, has the characteristics that small in size, broadband properties and planar structure and stable, very
It is suitble to be placed in the narrow inner space of high-tension switch cabinet.
7. a kind of high-tension switch cabinet local discharge on-line monitoring device according to claim 1, it is characterised in that: described
External type UHF sensor use Archimedian spiral antenna, with broadband, size is small, high-efficient characteristic, suitable for compared with
It is detected for the partial discharge superfrequency of gas insulated metal enclosed swit chgear.
8. a kind of high-tension switch cabinet local discharge on-line monitoring device according to claim 1, it is characterised in that: described
Filter is microstrip bandpass filter, can pass through 500MHz~1500MHz signal.
9. a kind of high-tension switch cabinet local discharge on-line monitoring device according to claim 1, it is characterised in that: described
Amplifier has many advantages, such as that transmission frequency is high, noise is low, high gain, and working frequency is able to satisfy 400MHz~3GHz, gain amplifier
Reach 20dB or more.
10. a kind of high-tension switch cabinet local discharge on-line monitoring device according to claim 1, it is characterised in that: described
Wave detector be highly sensitive zero offset Schottky diode envelope detector, mainly by diode and RC low-pass filter group
At the frequency electromagnetic waves that partial discharge generates can be exported as the lower pulse envelope of frequency, make the data collecting card of rate 50MS/s
It can detect uhf band local discharge signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821362885.XU CN208654277U (en) | 2018-08-23 | 2018-08-23 | A kind of high-tension switch cabinet local discharge on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821362885.XU CN208654277U (en) | 2018-08-23 | 2018-08-23 | A kind of high-tension switch cabinet local discharge on-line monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN208654277U true CN208654277U (en) | 2019-03-26 |
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ID=65791177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821362885.XU Expired - Fee Related CN208654277U (en) | 2018-08-23 | 2018-08-23 | A kind of high-tension switch cabinet local discharge on-line monitoring device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095716A (en) * | 2019-05-21 | 2019-08-06 | 国网山西省电力公司电力科学研究院 | High-voltage switch gear characteristic non-contact testing system and test method based on radiofrequency signal feature |
| CN110187248A (en) * | 2019-06-20 | 2019-08-30 | 上海格鲁布科技有限公司 | A kind of open type substation wide area partial discharge monitoring internet of things sensors and its monitoring method |
| CN110286304A (en) * | 2019-07-15 | 2019-09-27 | 哈尔滨理工大学 | A kind of ring network cabinet local discharge on-line monitoring device |
| CN110554285A (en) * | 2019-09-02 | 2019-12-10 | 中铁工程设计咨询集团有限公司 | self-adaptive environmental noise suppression partial discharge monitoring method |
| CN110888051A (en) * | 2019-11-16 | 2020-03-17 | 国网辽宁省电力有限公司电力科学研究院 | Novel detect double antenna electromagnetic wave collection of circuit breaker arc extinguishing characteristic device |
| CN111856224A (en) * | 2020-06-29 | 2020-10-30 | 国网河南省电力公司周口供电公司 | Partial discharge multi-source fusion detection system and method for high-voltage switch cabinet |
| CN113281586A (en) * | 2021-04-25 | 2021-08-20 | 武汉伊莱维特电力科技有限公司 | Real-time monitoring device for electrical equipment partial discharge detection equipment |
-
2018
- 2018-08-23 CN CN201821362885.XU patent/CN208654277U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095716A (en) * | 2019-05-21 | 2019-08-06 | 国网山西省电力公司电力科学研究院 | High-voltage switch gear characteristic non-contact testing system and test method based on radiofrequency signal feature |
| CN110187248A (en) * | 2019-06-20 | 2019-08-30 | 上海格鲁布科技有限公司 | A kind of open type substation wide area partial discharge monitoring internet of things sensors and its monitoring method |
| CN110286304A (en) * | 2019-07-15 | 2019-09-27 | 哈尔滨理工大学 | A kind of ring network cabinet local discharge on-line monitoring device |
| CN110554285A (en) * | 2019-09-02 | 2019-12-10 | 中铁工程设计咨询集团有限公司 | self-adaptive environmental noise suppression partial discharge monitoring method |
| CN110888051A (en) * | 2019-11-16 | 2020-03-17 | 国网辽宁省电力有限公司电力科学研究院 | Novel detect double antenna electromagnetic wave collection of circuit breaker arc extinguishing characteristic device |
| CN111856224A (en) * | 2020-06-29 | 2020-10-30 | 国网河南省电力公司周口供电公司 | Partial discharge multi-source fusion detection system and method for high-voltage switch cabinet |
| CN113281586A (en) * | 2021-04-25 | 2021-08-20 | 武汉伊莱维特电力科技有限公司 | Real-time monitoring device for electrical equipment partial discharge detection equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190326 Termination date: 20210823 |
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| CF01 | Termination of patent right due to non-payment of annual fee |