CN205982523U - High -speed capture card suitable for GIS local discharge on -line monitoring - Google Patents
High -speed capture card suitable for GIS local discharge on -line monitoring Download PDFInfo
- Publication number
- CN205982523U CN205982523U CN201620836720.6U CN201620836720U CN205982523U CN 205982523 U CN205982523 U CN 205982523U CN 201620836720 U CN201620836720 U CN 201620836720U CN 205982523 U CN205982523 U CN 205982523U
- Authority
- CN
- China
- Prior art keywords
- line monitoring
- partial discharge
- collection card
- speed collection
- gis partial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 31
- 238000005070 sampling Methods 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 230000005501 phase interface Effects 0.000 claims abstract description 6
- 238000012546 transfer Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009432 framing Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- FNMKZDDKPDBYJM-UHFFFAOYSA-N 3-(1,3-benzodioxol-5-yl)-7-(3-methylbut-2-enoxy)chromen-4-one Chemical compound C1=C2OCOC2=CC(C2=COC=3C(C2=O)=CC=C(C=3)OCC=C(C)C)=C1 FNMKZDDKPDBYJM-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 229920000729 poly(L-lysine) polymer Polymers 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The utility model relates to a high -speed capture card suitable for GIS local discharge on -line monitoring, high -speed capture card is including the analog -to -digital conversion module, sampling control module and the sample data processing module that connect gradually, the sampling control module has the PT locking phase interface that is used for gathering PT voltage signal. The utility model discloses a sampling frequency of high -speed capture card is higher to set up PT locking phase interface in the sampling control module, can guarantee to have under higher sampling frequency's the prerequisite, can insert PT voltage signal again and demarcate in order to realize the phase place that comes from each sensor signal.
Description
Technical field
This utility model belongs to high pressure equipment intellectuality field and in particular to one kind is applied to GIS partial discharge supervises online
The high-speed collection card surveyed.
Background technology
Partial discharge monitoring is one of GIS intelligentized important technology field, can find the incipient fault of GIS in time,
There is provided data and reference for repair based on condition of component, be the important support of life period of an equipment management.The detection of GIS partial discharge signal
Method includes pulse current method, UHF hyperfrequency method, discharge energy method etc., and UHF hyperfrequency method becomes local due to strong interference immunity
The main method of On-line Discharge monitoring.
High-speed collection card has much on the market at present, but is applied to for power industry and is put based on the GIS local of UHF mode
The high-speed collection card species of electricity is very limited.Existing GIS partial discharge on-line monitoring capture card scheme mainly has two kinds：
(1) there is high sampling rate, carried out data transmission based on bus modes such as PCI or PXI, hardware circuit is complicated, by
Dma mode controls.The special process CPU of cooperation is generally required using such capture card, with high costs, and there is no PT locking phase
Interface, does not apply to GIS partial discharge on-line monitoring system and uses.
(2) sample rate is 256 points of every cycle or lower, and hardware circuit is simple.But bring because sample rate is not high
The attenuating of fault type recognition rate, popularization and practicality to GIS partial discharge on-line monitoring adversely affect.
For above-mentioned the deficiencies in the prior art, it is badly in need of proposing a kind of GIS partial discharge on-line monitoring capture card, to be applied to
GIS partial discharge on-line monitoring field based on UHF.
Utility model content
The utility model proposes a kind of high-speed collection card being applied to GIS partial discharge on-line monitoring, solve existing
The sample frequency of GIS partial discharge on-line monitoring high-speed collection card and voltage signal Phase synchronization can not take into account simultaneously lack
Fall into.
For solving above-mentioned technical problem, the high-speed collection card being applied to GIS partial discharge on-line monitoring of the present utility model
Including：The analog-to-digital conversion module, sampling control module and the sampled-data processing module that are sequentially connected are it is characterised in that described adopt
Sample control module is provided with the PT locking phase interface for gathering PT voltage signal.
Described analog-to-digital conversion module includes the analog-digital converter of two panels 4 Channel 12-Bit 65MSPS.
Described sampling control module is FPGA.
Described sampled-data processing module is ARM9 processor.
Described analog-to-digital conversion module is provided with SMB input interface.
Described analog-to-digital conversion module passes through difference serial ports and transmits digital signal to sampling control module.
Described sampling control module communicates to connect sampled-data processing module by spi bus.
It is provided with USB interface in described sampled-data processing module.
512M FLASH and 64M DDR2 memorizer are configured with described ARM9 processor.
Described high-speed collection card also includes the power transfer module for voltage conversion.
The sample frequency of high-speed collection card of the present utility model is higher, and it is synchronous to be provided with PT on sampling control module
Phase place interface, can have access to PT voltage signal to realize being derived from the premise of ensureing to have higher sample frequency again
The phase calibration of each sensor signal.
Analog-to-digital conversion module of the present utility model is the chip of the analog-digital converter composition of two panels 4 Channel 12-Bit 65MSPS,
It is simultaneously suitable for the occasion of external sensor and built-in sensor in GIS partial discharge on-line monitoring system, when using interior
When putting formula sensor, the acquisition channel all as UHF for the 8 road acquisition channels；When using external sensor, wherein 7 tunnel collections
GIS partial discharge signal, 1 tunnel collection ambient noise signal.High-speed collection card of the present utility model is applied to transformator, height presses off
The data high-speed collection of the high pressure apparatus local discharge on-line monitoring such as pass, electromotor, it is simple to realize circuit, communication mode and externally
Interface is friendly, and cost performance is high.
Brief description
Fig. 1 is the present embodiment GIS partial discharge on-line monitoring system structure chart；
Fig. 2 is the present embodiment GIS partial discharge on-line monitoring high-speed collection card system connection figure；
Fig. 3 is the synchronous circuit schematic diagram that the present embodiment produces PT voltage signal.
Specific embodiment
Below in conjunction with the accompanying drawings technology contents of the present utility model are described in further detail.
Introduce GIS partial discharge on-line monitoring system first, as shown in figure 1, this system include microwave treatment module,
Collection card module drawn game portion Discharge analysis processing module.Wherein, microwave treatment module and collection card module are entered by coaxial cable
Row data transfer, and gather card module and data interaction is carried out by tcp/ip communication agreement and shelf depreciation module.This system
Operation principle is：SMB is adopted after processing and amplifying that UHF signal carries out envelope detection through microwave treatment module, make an uproar in bandpass filtering, bottom
Interface transmits to collection card module through coaxial cable, and collection card module carries out sampling to the signal after processing, framing etc. is processed
Through TCP/IP, the data of collection and capture card parameter are interacted with Analysis of Partial Discharge processing module, at Analysis of Partial Discharge
Reason resume module obtains shelf depreciation type, then carries out the parameter that type and processing procedure are related to integrated monitoring system
Data interaction.
And the high-speed collection card in the present embodiment is exactly to be applied to the collection of above-mentioned GIS partial discharge on-line monitoring system
Card, concrete structure includes：Analog-to-digital conversion module, sampling control module and the sampled-data processing module being sequentially connected, described adopts
Sample control module has the PT locking phase interface for gathering PT voltage signal.
The high-speed sampling of capture card is mainly passed through high-speed AD, FPGA process etc. and is realized.The data of collection passes through LVDS difference
Communicate to FPGA, FPGA carries out the calculating of maximin of data, pulse statistics, detection etc. to the data of collection,
After detection, data is communicated with CPU in TCP/IP mode.
Wherein, analog-to-digital conversion module preferably employs two panels 4 Channel 12-Bit 65MSPS analog-digital converter ADS6422 so as to work
Make the chip in 60MSPS, 2Vpp input voltage range with serial LVDS output.Its temperature range is wide temperature：- 40 DEG C～85
℃.
The preferred fpga chip of sampling control module, mainly completes controlling of sampling, data prediction and the work(with ARM interface
Energy.FPGA performance will have more than 50 user I/O, an embedded RAM of more than 400 (kbits), and more than 20 embedded is taken advantage of
Musical instruments used in a Buddhist or Taoist mass, to above LVDS interface, AD data buffer storage is 64Kbits to more than 10000 logical blocks and 10, and ARM interface caches
For 16Kbits.As the EP4CE10E22C8N chip using altera corp, the basic parameter of this chip is as follows：User I/O:
91；Embedded RAM (kbits):414kbits；Embedded multiplier:23；Logical block:10320；PLLs:2；LVDS:
21；Encapsulation:EQPF144.
This sampling control module supports inter-sync triggering and outer synchronous triggering, and inter-sync triggering is realized using crystal oscillation fractional frequency,
Outer synchronous triggering is gathered this voltage signal by FPGA after being processed through voltage transmitter by access PT voltage signal and realizes
Phase calibration from each sensor signal.It is 57.7V～220V that PT accesses voltage range.
As shown in figure 3, the synchronous circuit the producing PT voltage signal voltage transformer that includes being sequentially connected, sluggishness are more electric
Road and peaker, the workflow of this synchronous circuit is：First city's signal of telecommunication PT signal or AC220V is through mutual induction of voltage
Device is transformed to the low pressure sinusoidal signal of 5V, and this sinusoidal signal becomes square-wave signal by hysteresis comparator circuit, and square-wave signal passes through
One peaker, the just jump of square wave is become zero crossing pulse along (rising edge) and is sent in FPGA, and FPGA is made with this signal
The feature it is ensured that consistent with mains frequency, to meet shelf depreciation phase correlation for the trigger for sampling.
Sampled-data processing module preferred ARM9 processor, the dominant frequency of this ARM9 processor is 400MHz or more, configuration
64MB DDR2 and 512MB FLASH memory, can embed (SuSE) Linux OS, complete parameter setting, Frame processes, externally
The functions such as interaction.
The capture card of the present embodiment is applied to GIS partial discharge on-line monitoring system, is suitable for what site was installed and used
Occasion, chip type selecting is necessary for technical grade width temperature chip.The sample rate of capture card is 60MSPS, 8 road UHF letters of simultaneously sampling
Number.Capture card is plug-in structure, can easily coordinate with power system standard PC case.Capture card power supply passes through backboard
Introduce, support the input range of 12V～24V.
The handling process of above-mentioned capture card is：Signal after microwaved is transmitted by coaxial cable using Sub-miniature B
To in modulus conversion chip, modulus conversion chip completes to deliver to FPGA core by difference string oral instructions after analog signal digital is processed
In piece, the data of sampling is processed on request.Fpga chip is interacted with arm processor by spi bus.ARM process
(SuSE) Linux OS transplanted by device, and the data of collection is carried out framing, receives the parameter setting life of Analysis of Partial Discharge processing module
Make and be sent in FPGA, by TCP/IP, the data of collection and capture card parameter are handed over Analysis of Partial Discharge processing module
Mutually.
FPGA gather initial data flow process be：When the data motor synchronizing signal rising edge that capture card AD is obtained arrives
Carve, the collection signal phase shift value time delay of foundation setting starts to gather corresponding cycle time, the data of one power frequency period of collection,
This data etc. is divided 640 parts, every part takes its maximum, obtains 640 data.Number of pulses in statistics 1s simultaneously.
If using external sensor, then FPGA needs initial data and noise channel to carry out data processing, filters and makes an uproar
Sound interference.Data b [i] (equally being processed with data channel, 640 parts of decile takes maximum) that noise channel is obtained, is multiplied by and makes an uproar
Sound coefficient k, adds noise offset amount b, asks with initial data a [i] and subtracts computing, obtains the data processing, noise coefficient and making an uproar
Sound side-play amount is sent to FPGA after arranging by ARM.
Its formula is as follows：
Y [i]=a [i]-b [i] × k+b
ARM accesses the initial data of FPGA collection by spi bus, data is carried out pass through TCP/IP and local after framing
Discharge analysis processing module carries out data interaction, simultaneously support Analysis of Partial Discharge processing module setting the step-by-step counting cycle,
The parameter setting functions such as pulse width, triggering higher limit, and be sent in FPGA module by spi bus.
It is presented above specific embodiment, but this utility model is not limited to described embodiment.This practicality
New basic ideas are above-mentioned basic scheme, for those of ordinary skill in the art, according to teaching of the present utility model,
Design the model of various modifications, formula, parameter do not need to spend creative work.Without departing from principle of the present utility model
Still fall within protection domain of the present utility model with the change in the case of spirit, embodiment being carried out, modification, replacement and modification
Interior.
Claims (10)
1. a kind of high-speed collection card being applied to GIS partial discharge on-line monitoring, described high-speed collection card includes being sequentially connected
Analog-to-digital conversion module, sampling control module and sampled-data processing module are it is characterised in that described sampling control module is provided with
For gathering the PT locking phase interface of PT voltage signal.
2. according to claim 1 a kind of high-speed collection card being applied to GIS partial discharge on-line monitoring it is characterised in that
Described analog-to-digital conversion module includes the analog-digital converter of two panels 4 Channel 12-Bit 65MSPS.
3. according to claim 1 a kind of high-speed collection card being applied to GIS partial discharge on-line monitoring it is characterised in that
Described sampling control module is FPGA.
4. according to claim 1 a kind of high-speed collection card being applied to GIS partial discharge on-line monitoring it is characterised in that
Described sampled-data processing module is ARM9 processor.
5. according to claim 1 a kind of high-speed collection card being applied to GIS partial discharge on-line monitoring it is characterised in that
Described analog-to-digital conversion module is provided with SMB input interface.
6. according to claim 1 a kind of high-speed collection card being applied to GIS partial discharge on-line monitoring it is characterised in that
Described analog-to-digital conversion module passes through difference serial ports and transmits digital signal to sampling control module.
7. according to claim 1 a kind of high-speed collection card being applied to GIS partial discharge on-line monitoring it is characterised in that
Described sampling control module communicates to connect sampled-data processing module by spi bus.
8. according to claim 1 a kind of high-speed collection card being applied to GIS partial discharge on-line monitoring it is characterised in that
It is provided with USB interface in described sampled-data processing module.
9. according to claim 4 a kind of high-speed collection card being applied to GIS partial discharge on-line monitoring it is characterised in that
512M FLASH and 64M DDR2 memorizer are configured with described ARM9 processor.
10., according to a kind of arbitrary described high-speed collection card being applied to GIS partial discharge on-line monitoring of claim 1-9, it is special
Levy and be, described high-speed collection card also includes the power transfer module for voltage conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836720.6U CN205982523U (en) | 2016-08-04 | 2016-08-04 | High -speed capture card suitable for GIS local discharge on -line monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836720.6U CN205982523U (en) | 2016-08-04 | 2016-08-04 | High -speed capture card suitable for GIS local discharge on -line monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205982523U true CN205982523U (en) | 2017-02-22 |
Family
ID=58028904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620836720.6U Expired - Fee Related CN205982523U (en) | 2016-08-04 | 2016-08-04 | High -speed capture card suitable for GIS local discharge on -line monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205982523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797033A (en) * | 2017-09-29 | 2018-03-13 | 广西电网有限责任公司电力科学研究院 | A kind of detection platform to analogue transformer partial discharge test |
-
2016
- 2016-08-04 CN CN201620836720.6U patent/CN205982523U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797033A (en) * | 2017-09-29 | 2018-03-13 | 广西电网有限责任公司电力科学研究院 | A kind of detection platform to analogue transformer partial discharge test |
| CN107797033B (en) * | 2017-09-29 | 2024-03-19 | 广西电网有限责任公司电力科学研究院 | Detection platform for simulating partial discharge test of transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204425298U (en) | A kind of faint AC signal amplitude lock-in amplifier | |
| CN103257295B (en) | Based on intelligent micro-grid detection system and the method for the Big Dipper-GPS dual-mode time service | |
| CN205982523U (en) | High -speed capture card suitable for GIS local discharge on -line monitoring | |
| CN101893695B (en) | Analog sampling and protocol generating devices | |
| CN203773266U (en) | Digital measurement and control device | |
| CN202084168U (en) | Energy consumption data acquisition device | |
| CN103258415B (en) | Low-consumption wireless sensing node device and method of work thereof | |
| CN204758693U (en) | A electrical measurement device for building intelligent electric system of using | |
| CN204556728U (en) | A kind of power panel three-phase ac signal phase detection device | |
| CN204556726U (en) | A kind of power panel three-phase ac signal frequency detecting device | |
| CN102681018B (en) | Transient electromagnetic instrument for mine and transient electromagnetic signal processing method | |
| CN107610441A (en) | A kind of meter reading terminal based on low-power consumption Internet of Things | |
| CN101282043A (en) | Novel electric power filter | |
| CN203949971U (en) | A kind of transmission line of electricity debugging wireless measuring system | |
| CN103605105B (en) | Calibration device for digital electric energy meter of intelligent substation | |
| CN106154955B (en) | A kind of two-way filtering temperature control detection switching signal collector | |
| CN204758803U (en) | Digital magnetometer based on PC computer | |
| CN207440998U (en) | A kind of meter reading terminal based on low-power consumption Internet of Things | |
| CN106355861A (en) | ARM (Advanced RISC Machine)-based multi-protocol multi-mode general smart data collection system | |
| CN202059410U (en) | Electrical network concentrator | |
| CN109471060B (en) | Device for monitoring metering accuracy of digital electric energy meter on line | |
| CN202735472U (en) | On-line high voltage cable partial discharge monitoring device for power tunnel | |
| CN104331010A (en) | Zigbee based electrical equipment online monitoring system | |
| CN212460026U (en) | Error correction system for digital electric energy meter | |
| CN205066950U (en) | Remote control intelligent thermometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20190804 |