CN203811760U - Partial discharge source positioning device - Google Patents
Partial discharge source positioning device Download PDFInfo
- Publication number
- CN203811760U CN203811760U CN201420162261.9U CN201420162261U CN203811760U CN 203811760 U CN203811760 U CN 203811760U CN 201420162261 U CN201420162261 U CN 201420162261U CN 203811760 U CN203811760 U CN 203811760U
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- uhf
- filter assembly
- partial discharge
- sensor
- optional filter
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Abstract
A partial discharge source positioning device is composed of a UHF sensor (11), a second UHF sensor (12), a UHF signal conditioning unit (2), a first selectable filter assembly (31), a second selectable filter assembly (32), and a data acquisition unit (4). The data acquisition unit (4) is connected with the output terminal of the UHF signal conditioning unit (2) through the first selectable filter assembly (31) and the second selectable filter assembly (32). The input terminal of the UHF signal conditioning unit (2) is connected with the UHF sensor (11) and the second UHF sensor (12). The device is applicable to positioning of partial discharge sources in high-voltage electrical equipment, such as high-voltage switch cabinets, transformers, power cables, and GIS equipment.
Description
Technical field
The utility model relates to a kind of high voltage electric equipment shelf depreciation (abbreviation office puts) source locating device, belongs to high voltage electric equipment operation maintenance service technique field.
Background technology
High voltage electric equipment often showed as progressively development and the enhancing of shelf depreciation (abbreviation office puts) before generation insulating medium punctures, and the insulation fault usually office of originating from is put the insulation degradation causing.It is that deteriorated important sign occurs in insulation that office puts, and the degradation of insulation is higher, and office lets live moving stronger; Putting with the current political situation is also to cause further deteriorated major reason of insulation.Therefore need a kind of effective means to put row into high voltage electric equipment inside office and detect and locate, to put forward equipment operational reliability.
Put source in order to locate the inner office of charged high voltage electric equipment, generally adopt ultrasonic method, sound-electric (ultrasound wave-electric pulse) integrated processes, but that the ultrasonic signal decay of generation is put in office is very fast, ultrasonic method sensitivity and positioning precision are lower; High-tension switch cabinet, GIS(Gas Insulated Switchgear) etc. equipment High Frequency Current Sensor cannot be installed, limited the application of sound-electric combination method.The utility model adopts double-H groove weld HF(Ultra High Frequency, superfrequency) sensor, the UHF signal of generation is put in office of acceptance, and the signal time that arrives two-way UHF sensor by the comparison office source of putting is poor, thereby source position is put in definite office, and its locating speed is fast, precision is high.
Summary of the invention
The purpose of this utility model is, puts positioning precision and the location efficiency in source in order to improve the inner office of high voltage electric equipment, the utility model discloses the fast position of a kind of Partial Discharge Sources based on double-H groove weld HF sensor device.
The technical solution of the utility model is, a kind of Portable PD On-Line locating device of the utility model, is made up of a UHF sensor, the 2nd UHF sensor, UHF signal condition unit, the first optional filter assembly, the second optional filter assembly and data acquisition unit.Data acquisition unit is connected respectively the output terminal of UHF signal condition unit with the second optional filter assembly by the first optional filter assembly; The input end of UHF signal condition unit connects respectively a UHF sensor and the 2nd UHF sensor.
The one UHF sensor and the 2nd UHF sensor, be placed on high-tension switch cabinet casing gap, view window, transformer box edge seam, GIS equipment disc insulator etc. and locate, to accept to put from device interior office the UHF signal of generation; UHF sensor adopts the UHF sensor of 0.3GHz～1.5GHz frequency band.
UHF signal condition unit, carries out pre-process to UHF signal, UHF signal is carried out to the rear signals of pre-service output conditioning such as bandpass filtering, logarithmic amplification; UHF signal condition unit is made up of the bandpass filter linking together and logarithmic amplifier.
The first optional filter assembly and the second optional filter assembly, according to background scene undesired signal feature, carry out optional high pass, low pass or bandpass filtering to nursing one's health rear signal, disturbs to suppress on-the-spot, exports signal to be collected; Optional filter assembly is three submodules, and being respectively cutoff frequency is the high-pass filtering assembly of 0.6Ghz, the low-pass filtering assembly that cutoff frequency is 0.45GHz, the bandpass filtering assembly that band connection frequency is 1.3GHz～1.5GHz; , the selection of two-way filter assembly should be identical when the location.
Data acquisition unit, carries out mould/number conversion to described signal to be collected, and signal to be collected is converted to digital signal with high fidelity, obtains signal integrity waveform, and human-computer interaction interface is provided, and shows, analyzes, stores; The highest sampling rate of data acquisition unit is 4GSa/s, and bandwidth is 1.5GHz, and mould/number conversion resolution 12bit, can obtain UHF signal waveform with high fidelity, to read the initial edge of waveform; Possess USB interface and preserve signal by exterior storage.
The principle of work that UHF signal framing device is put in portable office is, be arranged on UHF sensor that high-tension switch cabinet casing gap, view window, transformer box edge seam, GIS equipment disc insulator etc. locate and the Partial discharge signal collecting delivered to the input end of UHF signal condition unit, UHF signal is carried out to pre-process, UHF signal is carried out to the rear signals of pre-service output conditioning such as bandpass filtering, logarithmic amplification; The rear signal of conditioning is delivered to optional filter assembly and is carried out optional high pass, low pass or bandpass filtering, disturbs to suppress on-the-spot, exports signal to be collected to data acquisition unit; Data acquisition unit is treated collection signal and is carried out mould/number conversion, and signal to be collected is converted to digital signal with high fidelity, obtains signal integrity waveform, and human-computer interaction interface is provided, and shows, analyzes, stores.
The beneficial effects of the utility model are, the utility model Portable PD On-Line locating device have detection sensitivity high, be not subject to the advantages such as plant machinery vibration interference, positioning precision is high, locating speed is fast completely, and layout is simple, rig-site utilization is convenient, and reliability is high.
The utility model is applicable to the high-voltage electrical apparatus device interior offices such as high-tension switch cabinet, transformer, power cable, GIS equipment puts the location in source.
Brief description of the drawings
Fig. 1 is according to the utility model Portable PD On-Line locating device schematic diagram;
Picture in picture number: the 2nd, UHF signal condition unit; The 4th, data acquisition unit; The 5th, source is put in office; The 7th, ground; 11 is UHF sensors; 12 is the 2nd UHF sensors; 31 is first optional filter assemblies; 32 is second optional filter assemblies.
Embodiment
Embodiment of the present utility model as shown in Figure 5.
The Portable PD On-Line locating device of the utility model embodiment, is made up of a UHF sensor 11, the 2nd UHF sensor 12, UHF signal condition unit 2, the first optional filter assembly 31, the second optional filter assembly 32 and data acquisition unit 4.Data acquisition unit 4 is connected respectively the output terminal of UHF signal condition unit 2 with the second optional filter assembly 32 by the first optional filter assembly 31; The input end of UHF signal condition unit 2 connects respectively a UHF sensor 11 and the 2nd UHF sensor 12.
When the utility model uses, by sensor, be placed on high-tension switch cabinet casing gap, view window, transformer box edge seam, GIS equipment disc insulator etc. and locate, to accept to put from device interior office the UHF signal of generation, position according to method of operating of the present utility model.
Claims (3)
1. a Partial Discharge Sources locating device, it is characterized in that, described device is made up of a UHF sensor (11), the 2nd UHF sensor (12), UHF signal condition unit (2), the first optional filter assembly (31), the second optional filter assembly (32) and data acquisition unit (4); Data acquisition unit (4) is connected respectively the output terminal of UHF signal condition unit (2) with the second optional filter assembly (32) by the first optional filter assembly (31); The input end of UHF signal condition unit (2) connects respectively a UHF sensor (11) and the 2nd UHF sensor (12).
2. a kind of Partial Discharge Sources locating device according to claim 1, is characterized in that, described UHF signal condition unit comprises the bandpass filter, the logarithmic amplifier that connect successively.
3. a kind of Partial Discharge Sources locating device according to claim 1, it is characterized in that, described optional filter assembly comprises three submodules, and being respectively cutoff frequency is the high-pass filtering assembly of 0.6GHz, the low-pass filtering assembly that cutoff frequency is 0.45GHz, the bandpass filtering assembly that band connection frequency is 1.3GHz～1.5GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162261.9U CN203811760U (en) | 2014-04-04 | 2014-04-04 | Partial discharge source positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162261.9U CN203811760U (en) | 2014-04-04 | 2014-04-04 | Partial discharge source positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811760U true CN203811760U (en) | 2014-09-03 |
Family
ID=51450493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420162261.9U Expired - Fee Related CN203811760U (en) | 2014-04-04 | 2014-04-04 | Partial discharge source positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103513A (en) * | 2019-12-02 | 2020-05-05 | 国网吉林省电力有限公司吉林供电公司 | GIS partial discharge online detector based on high-frequency sensing |
-
2014
- 2014-04-04 CN CN201420162261.9U patent/CN203811760U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103513A (en) * | 2019-12-02 | 2020-05-05 | 国网吉林省电力有限公司吉林供电公司 | GIS partial discharge online detector based on high-frequency sensing |
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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: 20140903 |