CN106405398A - GIS-used partial discharge signal attenuation characteristic test system and method - Google Patents
GIS-used partial discharge signal attenuation characteristic test system and method Download PDFInfo
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- CN106405398A CN106405398A CN201610783812.7A CN201610783812A CN106405398A CN 106405398 A CN106405398 A CN 106405398A CN 201610783812 A CN201610783812 A CN 201610783812A CN 106405398 A CN106405398 A CN 106405398A
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- electromagnetic wave
- gis
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- transmitting
- partial discharge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
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- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention provides a GIS partial discharge signal attenuation characteristic test system and method. The system comprises an electromagnetic wave generation device, an electromagnetic wave transmitting device, an electromagnetic wave receiving device and an upper computer. The electromagnetic wave transmitting device and the electromagnetic wave receiving device are respectively connected with the two ends of a GIS unit to be tested. Electromagnetic waves are transmitted by the electromagnetic wave transmitting device and then received by the electromagnetic wave receiving device through the GIS unit to be tested. The upper computer performs logical operation according to the received data so as to obtain the decrement of the tested GIS unit. The two ends of the GIS unit to be tested are respectively connected with the electromagnetic wave transmitting device and the electromagnetic wave receiving device, the electromagnetic waves of the specified frequency band are transmitted and then attenuated through the GIS unit, and the decrement of the GIS unit to be tested is obtained through logical operation.
Description
【Technical field】
The present invention relates to a kind of Cubicle Gas-Insulated Switchgear (GIS) uses local discharge signal attenuation characteristic to test
System.
【Background technology】
With the continuous development of extra-high voltage grid scale, it is particularly important that the safety of electrical network becomes, and extra-high voltage switch are set
The requirement also more and more higher of standby operational reliability.In the middle of the factor of impact switch reliability, shelf depreciation is that impact switch sets
One key factor of standby running quality, therefore with the development of intelligent grid, office puts monitoring technology and is more and more applied
To in switchgear.Wherein monitoring method is put because of its strong antijamming capability and effectiveness height in superfrequency office, in extra-high voltage switch equipment
In be most widely used.
And the feature of this monitoring method is to need to arrange that on switchgear sensor is put in superfrequency office, sets for gathering switch
Standby internal superfrequency Partial discharge signal.In placement sensor, high-density arrangement causes cost to waste, and low-density arrangement can cause
Point of discharge monitoring less than or None- identified, do not have the purpose of monitoring.How economical, reasonably arrange that biography is put in these superfrequency offices
Sensor, to ensure that office puts the effectiveness of monitoring system and accuracy it is necessary to carry out to the Partial discharge signal attenuation of GIS product
Test.
Put ultrahigh-frequency signal decay quantifier elimination with regard to switchgear office at present and be still in the exploratory stage, there is no unified survey
Test-object is accurate；There is very big diversity in the means of testing that each Ju Fang device fabrication producer proposes simultaneously, the time is difficult to reach again
Become common recognition；External switch drawn game puts some of the recommendations that equipment manufacturer then adopts CIGRE, using pulse current method and superfrequency
Method is demarcated, but the popularization of the method has difficulties.
In order to solve problem above, need the ultrahigh-frequency signal within switching devices to propagate, decay and change and ground
Study carefully, the invention provides a kind of Cubicle Gas-Insulated Switchgear (GIS) local discharge signal attenuation characteristic test system
System.
【Content of the invention】
The invention provides a kind of GIS Partial discharge signal attenuation characteristic test system and method, for the various type of GIS device
The measurement of state Partial discharge signal attenuation, in effectively solving GIS device, the problem of layouting of sensor is put in office.
For achieving the above object, the present invention employs the following technical solutions：
A kind of GIS Partial discharge signal attenuation characteristic measuring system, including electromagnetic wave generating device, electromagnetic wave launcher, electricity
Magnetic wave reception device, and host computer, wherein, electromagnetic wave launcher and electromagnetic receiving device are connected to GIS to be measured
The two ends of unit, electromagnetic wave, after electromagnetic wave launcher transmitting, through GIS unit to be measured, then passes through electromagnetic receiving device
Receive, host computer carries out logical operationss according to the data receiving, and obtains the attenuation of tested GIS unit.
Described electromagnetic wave launcher includes transmitting antenna, and described electromagnetic receiving device includes reception antenna, described
Penetrate antenna and reception antenna is sealed in the first and second confined spaces respectively.
Described first and second confined spaces are connected to GIS unit two ends to be measured by transitional cylinder respectively.
Described confined space is provided with absorbing material in one end end away from tested GIS unit.
If described absorbing material is absorbed a group or some groups of composite superpositions more than set very high frequency section by dried layer
Form.
Described electromagnetic wave launcher includes transmitting antenna, and described electromagnetic receiving device includes reception antenna, institute
State transmitting antenna and reception antenna pairing uses, same group of transmitting antenna is identical with reception antenna bandwidth, performance parameter phase
With.
Described electromagnetic wave launcher includes transmitting antenna, and described electromagnetic receiving device includes reception antenna, institute
State transmitting antenna and reception antenna is connected with electromagnetic wave generating device by coaxial cable respectively, the attenuation of described coaxial cable
Less than 0.2dB.
Described electromagnetic wave launcher includes transmitting antenna, and described electromagnetic receiving device includes reception antenna, institute
Stating transmitting antenna is for completing one of set very high frequency section electromagenetic wave radiation or one group of UHF-antenna, described reception sky
Line is for completing or the one group of UHF-antenna that set very high frequency section electromagnetic wave receives.
A kind of GIS Partial discharge signal attenuation characteristic measuring method, before starting test, is carried out to firing cable and reception cable
Calibration, after calibration, one end of firing cable is connected with transmitting antenna, the other end is connected with electromagnetic wave generating device, will receive
One end of cable is connected with reception antenna, and the other end is connected with electromagnetic wave generating device, and wherein, transmitting antenna and reception antenna divide
It is not connected to tested GIS unit two ends by launching attached storehouse and the attached storehouse of reception；When starting test, electromagnetic wave passes through emission port,
Continuously launch the electromagnetic wave of transmitting antenna allocated frequency band by firing cable, the electromagnetic wave signal of transmitting antenna transmitting passes through
GIS unit, after decay, is received and be input to by receiving cable by reception antenna the receiving port of electromagnetic wave generating device,
The information receiving is sent to host computer, host computer pair according to the corresponding relation of frequency and signal intensity by electromagnetic wave generating device
The data receiving carries out logical calculated, carries out attenuation calculating to the frequency range requiring, and show that tested GIS unit is demarcated in this antenna
Frequency range in attenuation.
The circular of attenuation is：For single-frequency, the transmission signal intensity receiving and received signal strength are asked
Difference, draws the attenuation of test product under this frequency；Then launch the signal of another frequency, repeat said method, obtain another
Attenuation under frequency；By repeated mode, the attenuation of all frequencies in frequency band required by acquisition, then to all frequencies
The attenuation of rate carries out mean value calculation, finally tries to achieve the attenuation meansigma methodss in this frequency band range.
Compared with prior art, the present invention at least has the advantages that：The present invention divides at GIS unit two ends to be measured
It is not connected with electromagnetic wave launcher and electromagnetic receiving device, by the electromagnetic wave of transmitting regulation frequency range, through GIS unit decay
Afterwards, the attenuation of GIS unit to be measured is obtained through logical calculated.
【Brief description】
Fig. 1 shows the structure chart of the local discharge signal attenuation characteristic method of testing of the present invention.
1st, standard signal device；2nd, firing cable；3rd, absorbing material；4th, transmitting antenna；5th, launch attached storehouse；6th, transitional cylinder；
7th, tested GIS unit；8th, receive attached storehouse；9th, reception antenna；10th, receive cable；11st, host computer.
【Specific embodiment】
It is an object of the invention to provide a kind of GIS local discharge signal attenuation characteristic test system, each for GIS device
Plant the measurement of kenel Partial discharge signal attenuation, in effectively solving GIS device, the problem of layouting of sensor is put in office.
Refer to shown in Fig. 1, a kind of GIS Partial discharge signal attenuation characteristic measuring system, this system is mainly launched single by signal
Unit, signal receiving unit, tested GIS unit and host computer composition.
Described tested GIS unit is the various GIS kenels needing test.
Described signal transmitter unit includes standard signal device 1 (being again electromagnetic wave generating device), coaxial cable, inhales ripple
Material 3, transmitting antenna 4 and the attached storehouse 5 of transmitting.Standard signal device completes the output of the electromagnetic wave of given frequency, intensity, launches sky
Line 4 completes the transmitting of known frequency bands electromagnetic wave.
Described signal receiving unit includes standard signal device 1 (being again electromagnetic wave generating device), coaxial cable, inhales ripple
Material 3, reception antenna 9 and the attached storehouse 8 of reception.Reception antenna 9 completes the reception of electromagnetic wave that decays, and standard signal device 1 completes
Know the reception of frequency electromagnetic and the measurement of electromagnetic wave signal intensity, and by the quantity of information receiving according to frequency and receipt signal
The corresponding relation of intensity, display, storage inside, output on the interface of device.
Described host computer, by its internal application program, carries out logic fortune to the attenuation of the test frequency range receiving
Calculate and show that tested kenel demarcates the average attenuation amount in band limits in antenna, host computer can be carried out according to test needs simultaneously
Calculate freely setting of frequency band.
Described logical operationss, are that host computer to single-frequency, ask by the transmission signal intensity receiving and received signal strength
Difference, draws the attenuation of test product under this frequency.Then standard signal device launches the signal of another frequency, and host computer passes through
Aforesaid way obtains the attenuation under another frequency again.Host computer by repeated mode, institute in frequency band required by acquisition
There is the attenuation of frequency, then mean value calculation is carried out to the attenuation of all frequencies, finally try to achieve declining in this frequency band range
Decrement meansigma methodss.
Described transmitting antenna 4 is or one group of superfrequency referring to complete set very high frequency section electromagenetic wave radiation
Antenna, and known to the performance parameter of this antenna and meet test request.
Described reception antenna 9 is or one group of superfrequency referring to complete that set very high frequency section electromagnetic wave receives
Antenna, and known to the performance parameter of this antenna and meet test request.
Described transmitting antenna 4 and reception antenna 9 pairing use, and same group of two antenna bandwidths are identical, and performance is joined
Number is identical and known.
Described standard signal device 1 is the outfan of the electromagnetic wave of given frequency, intensity, is given frequency electromagnetism again
The input of ripple, can complete to input the measurement of electromagnetic wave signal intensity simultaneously again.
If described absorbing material 3 can be absorbed a group or some groups of composite woods more than set very high frequency section by dried layer
Material is formed by stacking, and is fixed on the rear portion of transmitting antenna and reception antenna, plays the absorption to reflection electromagnetic wave and inhibitory reflex is made
With the surface configuration of absorbing material determines according to institute's frequency measurement bandwidth.
The attached storehouse of described transmitting 5 and the attached storehouse 8 of reception are used for FRPA-Fixed Radiation Pattern Antenna and reception antenna, connect tested GIS unit,
So that the electromagnetic wave in whole test loop is propagated in confined space, be easy to accurately measure the attenuation of electromagnetic wave.Institute
State and launch attached storehouse and receive two ends, one end of described transitional cylinder and the transmitting that attached storehouse is connected to tested GIS unit by transitional cylinder 6
Attached storehouse is bolted, and the other end and the attached storehouse of end are bolted.
Launch attached storehouse 5 before being connected with transitional cylinder 6, launch attached storehouse 5 bottom installing broad-band band absorbing material 3,
Transmitting antenna 4 is installed by the bottom centre launching attached storehouse 5, and the bottom of transmitting antenna 4 is connected with one end of transmitting cable 2.Emission lines
The other end of cable 2 is connected with the emission port of standard signal device 1.
Receive attached storehouse 8 before being connected with transitional cylinder 6, receive attached storehouse 8 bottom installing broad-band band absorbing material 3,
Reception antenna 9 is installed by the bottom centre receiving attached storehouse 8, and the bottom of reception antenna 9 is connected with one end of receiving cable 10.Receive line
The other end of cable 10 is connected with the receiving port of standard signal device 1.
Described coaxial cable is double shield RF cable, and length is less than 15 meters, and attenuation is less than 0.2dB.
Before starting test, by transmitting cable 2 and one end of being connected with antenna of receiving cable 10, by jack to jack adapter N connector
Docking, is calibrated to the attenuation of two sections of coaxial cables using standard signal device 1.Then again will be coaxial for two sections after calibration
Cable is connected with transmitting, reception antenna respectively.
When starting test, by the emission port of standard signal device 1, by launching cable 2, continuously launch transmitting antenna
The electromagnetic wave of the frequency band of 4 regulations, transmission signal intensity is 0dB.It is mono- that the electromagnetic wave signal of transmitting antenna 4 transmitting passes through tested GIS
Unit 7, after constant decay, is received and passes through, by reception antenna 9, the reception that receiving cable 10 is input to standard signal device 1
Port, standard signal device 1 by the quantity of information receiving according to frequency and signal intensity corresponding relation, at the interface of analyser
On as required form show, store.
The data-out port of standard signal device 1 is connected with host computer 11 by data wire, the application in host computer 11
Program, carries out logical operationss to the data receiving, the frequency range requiring is carried out with average attenuation amount calculating, you can draw tested GIS
Unit 7 demarcates the average attenuation amount in band limits in this antenna, and wherein host computer 11 can need to carry out frequency band according to test
Freely set.
Change transmitting antenna 4 and the reception antenna 9 of another set spot frequency section, retest, you can draw tested type
Attenuation in this group transducer calibration band limits for the state 7.Several groups of transmitting antennas 4 of set super high band will be covered and receive
After the completion of antenna 9 test, more several groups of attenuations are averaged, that is, drawn tested GIS unit 7 in set super high band
Average attenuation amount.
Above content is to describe in detail it is impossible to assert the reality of the present invention with reference to specific optimal way is made for the present invention
The mode of applying is only limitted to this, for general technical staff of the technical field of the invention, all according to spirit of the invention
Any simple modification made and equivalent structure transformation or modification, belong to the special of claims determination that the present invention is submitted to
Sharp protection domain.
Claims (10)
1. a kind of GIS Partial discharge signal attenuation characteristic measuring system it is characterised in that：Electromagnetic wave generating device, electromagnetic radiation dress
Put, electromagnetic receiving device, and host computer, wherein, electromagnetic wave launcher and electromagnetic receiving device are connected to and treat
Survey the two ends of GIS unit, electromagnetic wave, after electromagnetic wave launcher transmitting, through GIS unit to be measured, then is received by electromagnetic wave
Device receives, and host computer carries out logical operationss according to the data receiving, and obtains the attenuation of tested GIS unit.
2. a kind of GIS Partial discharge signal attenuation characteristic measuring system according to claim 1 it is characterised in that：Described electromagnetism
Wave transmitting device includes transmitting antenna (4), and described electromagnetic receiving device includes reception antenna (9), described transmitting antenna (4) and
Reception antenna is sealed in the first and second confined spaces respectively.
3. a kind of GIS Partial discharge signal attenuation characteristic measuring system according to claim 1 it is characterised in that：Described first
Respectively GIS unit two ends to be measured are connected to by transitional cylinder with the second confined space.
4. a kind of GIS Partial discharge signal attenuation characteristic measuring system according to claim 2 it is characterised in that：Described airtight
Space is provided with absorbing material in one end end away from tested GIS unit.
5. a kind of GIS Partial discharge signal attenuation characteristic measuring system according to claim 4 it is characterised in that：Described suction ripple
If material absorbs, by dried layer, be more than set very high frequency section one group or some groups of composites are formed by stacking.
6. a kind of GIS Partial discharge signal attenuation characteristic measuring system according to claim 1 it is characterised in that：Described electromagnetism
Wave transmitting device includes transmitting antenna, and described electromagnetic receiving device includes reception antenna, described transmitting antenna and reception
Antenna pair uses, and same group of transmitting antenna is identical with reception antenna bandwidth, and performance parameter is identical.
7. a kind of GIS Partial discharge signal attenuation characteristic measuring system according to claim 1 it is characterised in that：Described electromagnetism
Wave transmitting device includes transmitting antenna, and described electromagnetic receiving device includes reception antenna, described transmitting antenna and reception
Antenna is connected with electromagnetic wave generating device by coaxial cable respectively, and the attenuation of described coaxial cable is less than 0.2db.
8. a kind of GIS Partial discharge signal attenuation characteristic measuring system according to claim 1 it is characterised in that：Described electromagnetism
Wave transmitting device includes transmitting antenna, and described electromagnetic receiving device includes reception antenna, described transmitting antenna be for
Complete one or one group of UHF-antenna of set very high frequency section electromagenetic wave radiation, described reception antenna is set for completing
One or one group of UHF-antenna that very high frequency section electromagnetic wave receives.
9. a kind of GIS Partial discharge signal attenuation characteristic measuring method it is characterised in that：
Before starting test, firing cable and reception cable are calibrated, after calibration, by one end of firing cable and transmitting sky
Line connects, and the other end is connected with electromagnetic wave generating device, and one end of reception cable is connected with reception antenna, the other end and electromagnetism
Wave generating device connects, and wherein, transmitting antenna and reception antenna are connected to tested GIS by launching attached storehouse and the attached storehouse of reception respectively
Unit two ends；
When starting test, electromagnetic wave passes through emission port, continuously launches the electricity of transmitting antenna allocated frequency band by firing cable
Magnetic wave, the electromagnetic wave signal of transmitting antenna transmitting passes through GIS unit, after decay, is received and passed through by reception antenna to receive electricity
Cable is input to the receiving port of electromagnetic wave generating device, and electromagnetic wave generating device will be strong with signal according to frequency for the information receiving
The corresponding relation of degree is sent to host computer, and host computer carries out logical calculated to the data receiving, and the frequency range requiring is decayed
Amount calculates, and draws attenuation in the frequency range that this antenna is demarcated for the tested GIS unit.
10. a kind of GIS Partial discharge signal attenuation characteristic measuring method according to claim 9 it is characterised in that：Attenuation
Circular is：For single-frequency, the transmission signal intensity receiving and received signal strength ask poor, draw under this frequency
The attenuation of test product；Then launch the signal of another frequency, repeat said method, obtain the attenuation under another frequency；
By repeated mode, the attenuation of all frequencies in frequency band required by acquisition, then the attenuation of all frequencies is carried out
Mean value calculation, finally tries to achieve the attenuation meansigma methodss in this frequency band range.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610783812.7A CN106405398A (en) | 2016-08-30 | 2016-08-30 | GIS-used partial discharge signal attenuation characteristic test system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610783812.7A CN106405398A (en) | 2016-08-30 | 2016-08-30 | GIS-used partial discharge signal attenuation characteristic test system and method |
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| CN106405398A true CN106405398A (en) | 2017-02-15 |
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| CN201610783812.7A Pending CN106405398A (en) | 2016-08-30 | 2016-08-30 | GIS-used partial discharge signal attenuation characteristic test system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231518A (en) * | 2019-07-17 | 2019-09-13 | 中国人民解放军陆军工程大学 | Medium electrification experimental device and testing method |
| CN110687413A (en) * | 2019-11-01 | 2020-01-14 | 云南电网有限责任公司电力科学研究院 | Partial discharge electromagnetic wave attenuation characteristic test device |
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| CN103197212A (en) * | 2013-03-29 | 2013-07-10 | 国家电网公司 | Global information system (GIS) partial discharge on-line monitoring calibration instrument and configuration authentication method thereof |
| EP2802892A1 (en) * | 2012-01-11 | 2014-11-19 | UTILX Corporation | System for analyzing and locating partial discharges |
| CN105703853A (en) * | 2015-12-30 | 2016-06-22 | 国网智能电网研究院 | Broadband wireless channel attenuation test system used for transformer station site |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2802892A1 (en) * | 2012-01-11 | 2014-11-19 | UTILX Corporation | System for analyzing and locating partial discharges |
| CN103076546A (en) * | 2013-01-11 | 2013-05-01 | 湖北省电力公司电力科学研究院 | Testing device and method for electromagnetic wave propagation characteristics in gas insulated switchgear (GIS) |
| CN203012025U (en) * | 2013-01-11 | 2013-06-19 | 湖北省电力公司电力科学研究院 | Field test device for ultrahigh frequency signal attenuation characteristics of GIS (gas insulated switchgear) partial discharge |
| CN103197212A (en) * | 2013-03-29 | 2013-07-10 | 国家电网公司 | Global information system (GIS) partial discharge on-line monitoring calibration instrument and configuration authentication method thereof |
| CN105703853A (en) * | 2015-12-30 | 2016-06-22 | 国网智能电网研究院 | Broadband wireless channel attenuation test system used for transformer station site |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231518A (en) * | 2019-07-17 | 2019-09-13 | 中国人民解放军陆军工程大学 | Medium electrification experimental device and testing method |
| CN110687413A (en) * | 2019-11-01 | 2020-01-14 | 云南电网有限责任公司电力科学研究院 | Partial discharge electromagnetic wave attenuation characteristic test device |
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Application publication date: 20170215 |