CN203849366U - Portable partial discharge detection device - Google Patents
Portable partial discharge detection device Download PDFInfo
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- CN203849366U CN203849366U CN201420262510.1U CN201420262510U CN203849366U CN 203849366 U CN203849366 U CN 203849366U CN 201420262510 U CN201420262510 U CN 201420262510U CN 203849366 U CN203849366 U CN 203849366U
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Abstract
The utility model belongs to a detection monitoring field and relates to a portable partial discharge detection device. The portable partial discharge detection device comprises a UHF sensor, a signal converter and a signal display receiving analyzer; the UHF sensor is connected with the signal converter through a coaxial cable; and the signal converter is connected with the signal display receiving analyzer through a wireless network. According to the portable partial discharge detection device of the utility model, FHSS (Frequency-Hopping Spread Spectrum) technologies are adopted to perform filtering so as to realize signal high-precision acquisition; and a mobile device is adopted to install application software to realize data real-time monitoring. The portable partial discharge detection device has the advantages of reasonable structure and complete functions, and can simplify on-site operation and conform to on-site operation habits, and is sued for GIS equipment insulation condition detection.
Description
Technical field
The utility model relates to detection monitoring field, refers to especially a kind of Portable PD On-Line pick-up unit.
Background technology
Gas-insulated provision for sealing GIS is that transmission of electricity and power transformation field have extensively and the power equipment of important application.Because whole elements of GIS are all enclosed in betal can, its initial failure is compared with the more difficult discovery of conventional substation, and the loss that fault causes is also larger.In order to understand exactly GIS running status, find in time and eliminate potential faults, it is necessary that high pressure GIS is carried out to state-detection.It is the basis of realizing GIS repair based on condition of component that GIS is carried out to state-detection, can reduce the loss causing because of periodic maintenance and the automatization level that improves transformer station.
Partial Discharge Detecting Technology is to find that high-tension apparatus potential insulation defect is the sensitiveest, a UHF online measuring technique most effectively, be that in local detection method, application has successful one most, detection is put in the office that is widely used in the high voltage electric equipments such as power transformer, GIS, power cable.
Describe as an example of GIS example, superfrequency method, measurement bandwidth, between 300MHz-1500MHz, has the features such as antijamming capability is strong, sensitivity is high, and this not contact for secondary device and
Testing staff is safer, and system architecture is simple.A large amount of GIS inherent vice cases have been found by the online detection of superfrequency and live testing in all parts of the country in recent years, become the most important detection means of the online detection field of current GIS.
Frequency hopping (Frequency-Hopping Spread Spectrum; FHSS)
At the beginning of the 90's, there is the frequency hopping pattern generator based on fuzzy (Fuzzy) rule.In this system, jointly decided the output sequence of system by fuzzy rule, starting condition and sampling pattern.As long as listener-in does not know fuzzy rule, starting condition, sampling pattern three any one, with regard to the unpredictable output frequency to system, just improve thus anti-eavesdropping capability and the antijamming capability of system.The frequency hopping code sequence that fuzzy frequency hopping provides is more even compared with traditional frequency hopping code sequence, also more difficult prediction.
There is the end of the nineties people to propose chaos (chaotic) frequency hop sequences.Its basic thought is to generate frequency hop sequences by the symbol sebolic addressing of chaos system.In this chaos system, to determine nonlinear mapping relations, starting condition and chaos rule, the unique definite output sequence of three.Definite Chaotic FH Sequence has embodied good homogeneity thus, low probability of intercept, good Hamming correlation property and have the desirable range of linearity.
In existing DS/CDMA system, near-far interference is a very large problem.Because high-power signal only produces near-far interference in certain frequency, unaffected in the time that carrier frequency jumps to another frequency, therefore frequency-hopping system does not have obvious near-far interference, and this makes it easy in mobile communication
In being applied and developing.In digital cellular mobile communication systems, if adopt mutually orthogonal frequency hopping pattern synchronising frequency hopping between link, or the asynchronous frequency hopping of the frequency hopping pattern that adopts low simple crosscorrelation, can make the interference between link eliminate completely or substantially eliminate, significant to the capacity of raising system.In addition, frequency hopping is instantaneous narrowband systems, and its frequency is distributed and had very large dirigibility, and under the very crowded condition of existing frequency resource, this point is significant.
The multiple access performance of frequency hopping has very important significance for networking.Laval university of Canada has proposed to apply fast frequency hopping technology in fiber optic network.This system utilizes Bragg grating to substitute the frequency synthesizer in traditional frequency-hopping system, and hop rate reaches the 10G order of magnitude.System is 30 users, and under the condition that bit error rate is 10-9, data rate is 500Mb/s.Compared with adopting the fiber optic network of incoherent DS/CDMA technology, while having the user of equal number to use, the bit error rate of FFH/CDMA system is obviously better than DS/CDMA system simultaneously.
The local discharge detection device using at present, detection speed is slow, take that human resources are large, on-the-spot test professional, complicacy is high, line is complicated, signal attenuation is large, interference is strong, site work personal security coefficient is low, cannot regulate the frequency range of frequency range amplifilter, have certain difficulty so carry out voluntarily Site Detection for operation department.
Following patent describes
1. application publication number (CN103605061) adopts antenna to coordinate with alignment sensor by signal processing unit processes finally by LCD display screen demonstration discharge signal.Its shortcoming is that system can not carry out signal analysis and and the many decay of early warning processing, signal converting are large, detection speed is slow to discharge signal.
2. application publication number (CN102628916A) system comprises superfrequency receiving antenna, superfrequency receiving antenna is connected with bandpass filter by concentric cable, bandpass filter is connected with amplifier, amplifier connects digital oscilloscope, digital oscilloscope is connected with industrial computer, in industrial computer, be provided with monitoring system processing module, for detection of, show in real time, calculate partial discharge position and save historical data.Shortcoming is: connecting line and joint are too much, signal attenuation is large, uses oscillograph cost higher, and uses inconvenient.
Summary of the invention
The utility model provides a kind of local discharge detection device, by GIS equipment (9) is carried out to Partial Discharge Detection, finds in advance the insulation defect of GIS inside, avoids the generation of the major accident causing because of insulation degradation.
The utility model provides a kind of Portable PD On-Line pick-up unit, comprises for detection of the UHF sensor of the insulation defect of GIS device interior, for signal is amplified, the signal conversion unit of filtering, IED system unit; UHF sensor output terminal is connected with signal conversion unit input end by coaxial cable, and signal conversion unit output terminal is connected by wireless network with IED system unit input end, and described UHF installation of sensors is in the apparatus insulated son of GIS place.
Described signal conversion unit comprises: amplifier, bounce frequency filter, high speed data acquisition system, microcontroller, radio receiving transmitting module, described amplifier out is electrically connected with bounce frequency filter input end, bounce frequency filter output terminal is electrically connected with high speed data acquisition system input end, high speed data acquisition system output terminal is electrically connected with microcontroller input end, and microcontroller output terminal is electrically connected with radio receiving transmitting module input end; Described IED system unit comprises: radio receiving transmitting module, receiver, processor, LED display, and described radio receiving transmitting module output terminal is electrically connected with receiver inlet, and receiver output terminal is electrically connected with LED display input end.Radio receiving transmitting module output terminal is electrically connected with processor, and processor is electrically connected with the input end of receiver, and the output terminal of receiver is electrically connected with LED display input end.
Described signal conversion unit carries out segmentation filtering by FHSS technology and realizes signals collecting.
Signal after processing gathers is connected with IED system unit by wireless network by signal conversion unit.
Described wireless network is one of them in bluetooth, Wifi, frequency hopping communication three.
Described IED system unit is connected with warning device.
Described warning device comprises voice guard, visual alarm, active relay, passive relay.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is use constitutional diagram of the present utility model.
In figure 1, UHF sensor;
2, signal conversion unit;
3, IED system unit;
4, shell;
5, high-pressure conductor;
6, insulator;
7, free conducting particle;
8, metal protrusion;
9, GIS equipment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, GIS equipment 9 insulation status pick-up units are by comprising UHF sensor 1, and signal converter 2, signal show receiving and analyzing device 3 three part compositions.
Described signal conversion unit 2 comprises: amplifier, bounce frequency filter, high speed data acquisition system, microcontroller, radio receiving transmitting module, described in
iED system unit 3 wrapsdraw together: radio receiving transmitting module, receiver, LED display, processor,
Between described amplifier, bounce frequency filter, high speed data acquisition system, microcontroller, radio receiving transmitting module, be electrically connected radio receiving transmitting module, receiver, LED display electrical connection.
By FHSS(Frequency-Hopping Spread Spectrum frequency hopping) technology carries out segmentation filtering and realizes signal high precision collection.
Signal after processing gathers sends signal by converter to by wireless network and shows that receiving and analyzing device comprehensively judges.
Described wireless network comprises: bluetooth, Wifi, frequency hopping communication.
Described signal shows that receiving and analyzing device detects when definite signal reaches the threshold value of setting and exports early warning signal the data that signal converter gathered, gathers, and shows that by signal the processor in receiving and analyzing device provides assessment report.
Described processor mainly manages GIS checkout equipment, and play a game and put data and collect, analyze, manage, carry out communication by putting checkout equipment with office, detection data are put in the office of obtaining online, and can graphically show various data, provide Data Comparison, historical data to check, warning information is checked, parameter configuration and data derive.
Described signal shows that receiving and analyzing device, the insulation status of GIS equipment 9 is made before assessment, early warning, needs first decision signal to show that receiving and analyzing device reaches the threshold value of setting.
Data processing method is, by processor, the discharge signal detecting is carried out to data analysis and electric discharge type processing.
Described device data processing method, sets up typical discharge data storehouse by simulating typical shelf depreciation, and processor compares to analyze data and electric discharge type processing to the discharge signal detecting and typical discharge data storehouse.
Carry out early warning by sound, optical, electrical, wireless network/mobile network and computer applied algorithm.
Show that by signal receiving and analyzing device is uploaded to service end by discharge information and accomplishes to consult in real time by APP application software being installed at mobile device.
Described pass through, at mobile device, APP application software is installed and accomplish to consult in real time, consult content difference according to different its of user's rank.
As shown in Figure 2, UHF sensor 1 is installed on GIS equipment 9 insulator 6 places, be used for monitoring GIS equipment 9 built-in electrical insulation state variation, the signal that UHF sensor 1 detects sends signal converter to by coaxial cable, signal converter to signal by FHSS(Frequency-Hopping Spread Spectrum frequency hopping) technology carries out filtering, after amplification to high speed data acquisition system, after signal being gathered by microcontroller, give signal by wireless network and show that receiving and analyzing device comprehensively judges, makes assessment, early warning to the insulation status of GIS equipment 9.
It should be noted that, the content such as information interaction, implementation between said apparatus and intrasystem each unit, module, due to the utility model embodiment of the method based on same design, particular content can, referring to the narration in this utility model law embodiment, repeat no more herein.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is can carry out the hardware that instruction is relevant by program to complete, this program can be stored in computer-readable recording medium, storage medium can comprise: ROM (read-only memory) (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
A kind of local discharge detection device above the utility model embodiment being provided is described in detail, applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.
Claims (7)
1. a Portable PD On-Line pick-up unit, is characterized in that: comprise the UHF sensor (1) of the insulation defect inner for detection of GIS equipment (9), for signal is amplified, the signal conversion unit (2) of filtering, IED system unit (3); UHF sensor output terminal (1) is connected with signal conversion unit (2) input end by coaxial cable, signal conversion unit (2) output terminal is connected by wireless network with IED system unit (3) input end, and described UHF sensor (1) is installed on the apparatus insulated son of GIS (6) and locates.
2. a kind of Portable PD On-Line pick-up unit according to claim 1, it is characterized in that: described signal conversion unit (2) comprising: amplifier, bounce frequency filter, high speed data acquisition system, microcontroller, radio receiving transmitting module, described amplifier out is electrically connected with bounce frequency filter input end, bounce frequency filter output terminal is electrically connected with high speed data acquisition system input end, high speed data acquisition system output terminal is electrically connected with microcontroller input end, and microcontroller output terminal is electrically connected with radio receiving transmitting module input end; Described IED system unit (3) comprising: radio receiving transmitting module, receiver, processor, LED display, described radio receiving transmitting module output terminal is electrically connected with receiver inlet, receiver output terminal is electrically connected with LED display input end, radio receiving transmitting module output terminal is electrically connected with processor, processor is electrically connected with the input end of receiver, and the output terminal of receiver is electrically connected with LED display input end.
3. a kind of Portable PD On-Line pick-up unit according to claim 1, is characterized in that: described signal conversion unit (2) carries out segmentation filtering by FHSS technology and realizes signals collecting.
4. a kind of Portable PD On-Line pick-up unit according to claim 1, is characterized in that: the signal of processing after gathering is connected with IED system unit (3) by wireless network by signal conversion unit (2).
5. a kind of Portable PD On-Line pick-up unit according to claim 4, is characterized in that: described wireless network is one of them in bluetooth, Wifi, frequency hopping communication three.
6. a kind of Portable PD On-Line pick-up unit according to claim 1, is characterized in that: described IED system unit (3) is connected with warning device.
7. a kind of Portable PD On-Line pick-up unit according to claim 6, is characterized in that: described warning device comprises voice guard, visual alarm, active relay, passive relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262510.1U CN203849366U (en) | 2014-05-22 | 2014-05-22 | Portable partial discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262510.1U CN203849366U (en) | 2014-05-22 | 2014-05-22 | Portable partial discharge detection device |
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| Publication Number | Publication Date |
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| CN203849366U true CN203849366U (en) | 2014-09-24 |
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| CN201420262510.1U Expired - Fee Related CN203849366U (en) | 2014-05-22 | 2014-05-22 | Portable partial discharge detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391234A (en) * | 2014-12-04 | 2015-03-04 | 国家电网公司 | Intermittent servicing partial discharge online monitoring system |
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2014
- 2014-05-22 CN CN201420262510.1U patent/CN203849366U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391234A (en) * | 2014-12-04 | 2015-03-04 | 国家电网公司 | Intermittent servicing partial discharge online monitoring system |
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| 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: 20140924 Termination date: 20180522 |