CN110082658A - Superfrequency-optical signal uniformity test unit and method in GIS - Google Patents
Superfrequency-optical signal uniformity test unit and method in GIS Download PDFInfo
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- CN110082658A CN110082658A CN201910465372.4A CN201910465372A CN110082658A CN 110082658 A CN110082658 A CN 110082658A CN 201910465372 A CN201910465372 A CN 201910465372A CN 110082658 A CN110082658 A CN 110082658A
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- superfrequency
- light source
- optical signal
- sensor
- photomultiplier tube
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
Abstract
The present invention relates to a kind of superfrequency in GIS-optical signal uniformity test equipment, device and method, wherein equipment includes impulse generator, light source controller, switch, test cavity, superfrequency emission sensor, light source, superfrequency receiving sensor, photomultiplier tube and oscillograph, the input terminal of switch is separately connected impulse generator and light source controller, output end is separately connected superfrequency emission sensor and light source, superfrequency receiving sensor and photomultiplier tube are connect with oscillograph, superfrequency emission sensor and light source are placed in the intracorporal one end of test cavity, superfrequency receiving sensor and photomultiplier tube are placed in the intracorporal other end of test cavity, the accommodation groove for placing barrier is equipped in test cavity body, the accommodation groove is between light source and photomultiplier tube, and it is located at superfrequency emission sensor and superfrequency receiving sensor Between.Compared with prior art, the present invention can test all kinds of barriers to the affecting laws of discharge generated light, ultrahigh-frequency signal consistency.
Description
Technical field
The present invention relates to electrical equipment fields of measurement, more particularly, to a kind of superfrequency in GIS-optical signal uniformity test
Unit and method.
Background technique
Large-scale power transformer and gas-insulating and fully-enclosed formula combined electrical apparatus (Gas-insulated metal-enclosed
Switchgear, GIS) it is that most important equipment, operational reliability are directly related to network system in current electric system
Safety and stability.Inside GIS, the defects of metal tip, floating potential, happens occasionally, and puts once generating defect and will will lead to part
The generation of electricity.Relatively broad application has been obtained using the detection that superfrequency method carries out GIS internal flaw shelf depreciation, to the greatest extent
Pipe superfrequency method itself has strong anti-interference ability, but there are still from external empty in on-site test and laboratory research
Between all kinds of interference, be difficult to differentiate the Partial discharge signal of interference signal sometimes.It is carried out using optical signal caused by GIS internal flaw
The detection of partial discharge is gradually carried out at present, carries out the measurement pair of superfrequency and optical signal simultaneously in particular with photoelectric sensor
In improving anti-interference ability, accurately identifies defect and play an important role.But due to optical signal and ultrahigh-frequency signal propagation characteristic
With very big difference, especially optical signal, there are fluctuation and two kinds of propagation characteristics of particle, therefore how to obtain this two classes signal
Consistency is a current problem.In view of this, the present invention provides a kind of superfrequency in GIS-optical signal uniformity tests to set
It is standby, it can get in GIS various parts to the affecting laws of two class signal propagation characteristics, and then obtain its consistency rule.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide superfrequencies-in a kind of GIS
Optical signal uniformity test unit and method.
The purpose of the present invention can be achieved through the following technical solutions:
Superfrequency-optical signal uniformity test equipment in a kind of GIS, including impulse generator, light source controller, switch,
Cavity, superfrequency emission sensor, light source, superfrequency receiving sensor, photomultiplier tube and oscillograph are tested, the switch
Input terminal is separately connected impulse generator and light source controller, and output end is separately connected superfrequency emission sensor and light source, institute
It states superfrequency receiving sensor and photomultiplier tube is connect with oscillograph, the superfrequency emission sensor and light source are placed in examination
The intracorporal one end of chamber is tested, the superfrequency receiving sensor and photomultiplier tube are placed in the intracorporal other end of test cavity, the examination
The accommodation groove being equipped with for placing barrier is tested in cavity, which is located at spy between light source and photomultiplier tube
Between high-frequency emission sensor and superfrequency receiving sensor.
The light source is LED light source.
All cross-sectional areas of the accommodation groove are equal, wherein the cross section and ultrahigh-frequency signal and optical signal
Propagation path is vertical.
The type of the barrier includes at least guide rod, disconnecting switch and disc insulator.
The light source is located at the center of superfrequency emission sensor.
Superfrequency-optical signal consistency test device in a kind of GIS, including test cavity, superfrequency emission sensor, light
Source, superfrequency receiving sensor and photomultiplier tube, the superfrequency emission sensor and light source are placed in test cavity intracorporal one
End, the superfrequency receiving sensor and photomultiplier tube are placed in the intracorporal other end of test cavity, are equipped in the test cavity body
For placing the accommodation groove of barrier, which is located at superfrequency transmitting sensing between light source and photomultiplier tube
Between device and superfrequency receiving sensor.
It is a kind of such as superfrequency-optical signal uniformity test equipment test method in above-mentioned GIS, comprising:
Step S1: barrier is filled in accommodation groove；
Step S2: closure switch, the impulse generator excitation superfrequency emission sensor excite the extra-high of setpoint frequency
Frequency electromagnetic waves signal, the light-source controller controls radiation of light source go out to set the optical signal of wavelength, and the superfrequency receives sensing
The signal that device and photomultiplier tube receive by oscilloscope display, and record barrier type and corresponding waveform；
Step S3: replacing the type of barrier, and return step S2, until completing the detection of all target obstacles.
The frequency range of the ultrahigh frequency electromagnetic wave signal is 300MHz-3GHz, and the wave-length coverage of the optical signal is
200-800 nanometers.
Compared with prior art, the invention has the following advantages:
1, all kinds of barriers inside GIS can be tested to the ultrahigh-frequency signal consistency of optical signal caused by shelf depreciation
Affecting laws provide foundation for the Photoelectric Detection of GIS partial discharge.
2, using LED light source, it is easy to control frequency；
3, light source is located at the center of superfrequency emission sensor, so that the position of transmitting terminal is as unified as possible.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Wherein: 1, impulse generator, 2, light source controller, 3, switch, 4, superfrequency emission sensor, 5, light source, 6, spy
High-frequency reception sensor, 7, photomultiplier tube, 8, oscillograph, 9, test cavity, 10, accommodation groove.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
Superfrequency-optical signal uniformity test equipment in a kind of GIS, as shown in Figure 1, including impulse generator 1, light source control
Device 2 processed, switch 3, test cavity 9, superfrequency emission sensor 4, light source 5, superfrequency receiving sensor 6,7 and of photomultiplier tube
Oscillograph 8, the input terminal of switch 3 are separately connected impulse generator 1 and light source controller 2, and output end is separately connected extra-high take place frequently
Sensor 4 and light source 5 are penetrated, superfrequency receiving sensor 6 and photomultiplier tube 7 are connect with oscillograph 8, superfrequency transmitting sensing
Device 4 and light source 5 are placed in one end in test cavity 9, and superfrequency receiving sensor 6 and photomultiplier tube 7 are placed in test cavity 9
The other end, be equipped with accommodation groove 10 for placing barrier in test cavity 9, which is located at light source 5 and photoelectricity again
Increase between pipe 7, and between superfrequency emission sensor 4 and superfrequency receiving sensor 6.
Preferably, light source 5 is LED light source.All cross-sectional areas of accommodation groove 10 are equal, wherein cross section with it is extra-high
The propagation path of frequency signal and optical signal is vertical.The type of barrier includes at least guide rod, disconnecting switch and disc insulator.Light
Source 5 is located at the center of superfrequency emission sensor 4.
Further, it is also possible to obtain superfrequency-optical signal consistency test device in a kind of GIS, including it is test cavity 9, special
High-frequency emission sensor 4, light source 5, superfrequency receiving sensor 6 and photomultiplier tube 7, superfrequency emission sensor 4 and light source 5
It is placed in one end in test cavity 9, superfrequency receiving sensor 6 and photomultiplier tube 7 are placed in the other end in test cavity 9,
Test and be equipped with accommodation groove 10 for placing barrier in cavity 9, the accommodation groove 10 between light source 5 and photomultiplier tube 7,
And between superfrequency emission sensor 4 and superfrequency receiving sensor 6.
It is a kind of such as superfrequency-optical signal uniformity test equipment test method in above-mentioned GIS, comprising:
Step S1: barrier is filled in accommodation groove 10；
Step S2: the superfrequency that fast pulse generator is input to inside test cavity 9 is emitted by the control of switch 3
Sensor 4 and control LED light source 5 are lighted, and ultrahigh-frequency signal and optical signal are carried out while being exported, wherein impulse generator 1
Fast pulse of the forward position less than 1 nanosecond can be generated, superfrequency emission sensor 4 can be excited to launch within the scope of 300MHz-3GHz
Ultrahigh frequency electromagnetic wave signal, LED light source then it is radiation-curable go out wave-length coverage 200-800 nanometers of optical signal, LED light source 5 is put
It sets in superfrequency sensor center position, two class signals is carried out while being emitted using switch 3, in the other end of test cavity 9
The reception of superfrequency and optical signal is carried out by superfrequency receiving sensor 6 and photomultiplier tube 7, and is sent into the progress of oscillograph 8
Display, wherein the frequency range of ultrahigh frequency electromagnetic wave signal is 300MHz-3GHz, and the wave-length coverage of optical signal is received for 200-800
Rice；
Step S3: replacing the type of barrier, and return step S2, until completing the detection of all target obstacles.
Wherein testing the parameters such as size, the length of cavity 9 can be special in testing according to any adjusting of difference of voltage class
High frequency electromagnetic wave signal and the propagation characteristic of optical signal are different, and which results in two kinds received when there are different barriers
The consistency of signal is different, and all kinds of barriers in the inside GIS can be then tested by this measuring system to light caused by shelf depreciation
The affecting laws of the ultrahigh-frequency signal consistency of signal provide foundation for the Photoelectric Detection of GIS partial discharge.
Claims (10)
1. superfrequency-optical signal uniformity test equipment in a kind of GIS, which is characterized in that including impulse generator (1), light source
Controller (2), switch (3), test cavity (9), superfrequency emission sensor (4), light source (5), superfrequency receiving sensor
(6), the input terminal of photomultiplier tube (7) and oscillograph (8), the switch (3) is separately connected impulse generator (1) and light source control
Device (2) processed, output end are separately connected superfrequency emission sensor (4) and light source (5), the superfrequency receiving sensor (6) and
Photomultiplier tube (7) is connect with oscillograph (8), and the superfrequency emission sensor (4) and light source (5) are placed in test cavity
(9) one end in, the superfrequency receiving sensor (6) and photomultiplier tube (7) are placed in the other end in test cavity (9),
The accommodation groove (10) for placing barrier is equipped in test cavity (9), which is located at light source (5) and photoelectricity
Between multiplier tube (7), and between superfrequency emission sensor (4) and superfrequency receiving sensor (6).
2. superfrequency-optical signal uniformity test equipment in a kind of GIS according to claim 1, which is characterized in that described
Light source (5) is LED light source.
3. superfrequency-optical signal uniformity test equipment in a kind of GIS according to claim 1, which is characterized in that described
All cross-sectional areas of accommodation groove (10) are equal, wherein the propagation path of the cross section and ultrahigh-frequency signal and optical signal
Vertically.
4. superfrequency-optical signal uniformity test equipment in a kind of GIS according to claim 1, which is characterized in that described
The type of barrier includes at least guide rod, disconnecting switch and disc insulator.
5. superfrequency-optical signal uniformity test equipment in a kind of GIS according to claim 1, which is characterized in that described
Light source (5) is located at the center of superfrequency emission sensor (4).
6. superfrequency-optical signal consistency test device in a kind of GIS, which is characterized in that including testing cavity (9), superfrequency
Emission sensor (4), light source (5), superfrequency receiving sensor (6) and photomultiplier tube (7), the superfrequency emission sensor
(4) and light source (5) is placed in one end in test cavity (9), and the superfrequency receiving sensor (6) and photomultiplier tube (7) are set
The other end in test cavity (9), the interior accommodation groove (10) being equipped with for placing barrier of test cavity (9), the appearance
It sets slot (10) to be located between light source (5) and photomultiplier tube (7), and is located at superfrequency emission sensor (4) and superfrequency reception
Between sensor (6).
7. superfrequency-optical signal consistency test device in a kind of GIS according to claim 6, which is characterized in that described
Light source (5) is LED light source.
8. superfrequency-optical signal consistency test device in a kind of GIS according to claim 6, which is characterized in that described
Light source (5) is located at the center of superfrequency emission sensor (4).
9. a kind of superfrequency-optical signal uniformity test equipment test method in GIS as described in claim 1-5 is any,
It is characterized in that, comprising:
Step S1: barrier is filled in accommodation groove (10)；
Step S2: closure switch (3), impulse generator (1) excitation superfrequency emission sensor (4) the excitation setpoint frequency
Ultrahigh frequency electromagnetic wave signal, light source controller (2) control light source (5) gives off the optical signal of setting wavelength, described extra-high
The signal that frequency receiving sensor (6) and photomultiplier tube (7) receive is shown by oscillograph (8), and records the class of barrier
Type and corresponding waveform；
Step S3: replacing the type of barrier, and return step S2, until completing the detection of all target obstacles.
10. according to the method described in claim 9, it is characterized in that, the frequency range of the ultrahigh frequency electromagnetic wave signal is
300MHz-3GHz, the wave-length coverage of the optical signal are 200-800 nanometers.
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| CN201910465372.4A CN110082658A (en) | 2019-05-30 | 2019-05-30 | Superfrequency-optical signal uniformity test unit and method in GIS |
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| CN201910465372.4A CN110082658A (en) | 2019-05-30 | 2019-05-30 | Superfrequency-optical signal uniformity test unit and method in GIS |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014694A (en) * | 2020-08-18 | 2020-12-01 | 西安电子科技大学 | System and method for measuring optical signal propagation characteristics of gas insulated switchgear |
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| CN106569105A (en) * | 2016-10-31 | 2017-04-19 | 国家电网公司 | GIS partial discharge optical ultrahigh frequency combined detection method |
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|---|---|---|---|---|
| CN112014694A (en) * | 2020-08-18 | 2020-12-01 | 西安电子科技大学 | System and method for measuring optical signal propagation characteristics of gas insulated switchgear |
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