CN109061327A - A kind of super extra high voltage line insulator electric field distribution monitoring device - Google Patents
A kind of super extra high voltage line insulator electric field distribution monitoring device Download PDFInfo
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- CN109061327A CN109061327A CN201811159865.7A CN201811159865A CN109061327A CN 109061327 A CN109061327 A CN 109061327A CN 201811159865 A CN201811159865 A CN 201811159865A CN 109061327 A CN109061327 A CN 109061327A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
- G01R29/14—Measuring field distribution
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Abstract
The present invention provides a kind of super extra high voltage line insulator electric field distribution monitoring device, including equipment end, insulating bar and optical electric field sensor, it is sequentially installed with computer from right to left in the equipment end, analog divider, filter, photoelectric converter, light emitting diode and battery, receiving room is provided in the equipment end, bottom plate is provided in the optical electric field sensor, Pokeles element is installed at the top of the bottom plate, the both ends of the Pokeles element are separately installed with quarter-wave plate and analyzer, the light emitting diode is connect by optical fiber one with quarter-wave plate, the analyzer is connect by optical fiber two with photoelectric converter, the super extra high voltage line insulator electric field distribution monitoring device design is reasonable, optical electric field sensor need to all use passive device, change previous manual operation Uncertainty, poor repeatability the problems such as, can be greatly reduced work on the spot intensity, improve measurement accuracy, and ensure the safety of field operation.
Description
Technical field
The present invention is a kind of super extra high voltage line insulator electric field distribution monitoring device, belongs to electric field strength monitoring device skill
Art field.
Background technique
Insulator is one of important component of overhead transmission line, and performance superiority and inferiority will directly influence the fortune of whole route
Row safety, with the raising of transmission line of electricity voltage class, the mechanically and electrically load that insulator is born increasingly is aggravated, this makes
The superiority-inferiority requirement that power grid is operated normally to insulator is higher and higher, and insulator is widely used in entire electrical power trans mission/distribution system, especially
It is in the super-pressure greatly developed in recent years, in extra-high voltage AC and DC transmission system, and the safe operation problem of insulator is even more straight
Connect the investment and level of security for determining whole system.In current transmission facility accident, one of them important problem is exhausted
Edge deteriorates problem, and the insulation decline of insulator may cause flashover, be broken, fall the accidents such as string, conducting wire landing, jeopardizes power grid peace
Entirely, therefore detection Faulty insulator has a very important significance the operational safety of power grid.
It is highly developed come the criterion for judging Faulty insulator by measurement insulator chain Potential distribution at present, but measure dress
Set itself and it is not perfect, current operating method is also comparatively laborious, is all the operators such as Potential Distribution Measuring Instrument coordinated insulation bar
Member's manual operation significantly increases the execute-in-place difficulty of this method, limits especially after insulator chain growth
This method detect at the scene in use, for this purpose, the present invention provides a kind of super extra high voltage line insulator electric field distribution monitoring dress
It sets.
Summary of the invention
In view of the deficienciess of the prior art, it is an object of the present invention to provide a kind of super extra high voltage line insulator electric fields to be distributed
Monitoring device, to solve the problems mentioned in the above background technology, the super extra high voltage line insulator electric field distribution monitoring device
Rationally, optical electric field sensor need to all use passive device for design, change previous manually-operated uncertain, poor repeatability
The problems such as, work on the spot intensity can be greatly reduced, improve measurement accuracy, and ensure the safety of field operation.
To achieve the goals above, the present invention is to realize by the following technical solutions: a kind of super extra high voltage line is exhausted
Edge field distribution monitoring device, including equipment end, insulating bar and optical electric field sensor, in the equipment end from right to left according to
It is secondary that computer, analog divider, filter, photoelectric converter, light emitting diode and battery are installed, it is set in the equipment end
It is equipped with receiving room, bottom plate is provided in the optical electric field sensor, Pokeles element, institute are installed at the top of the bottom plate
The both ends for stating Pokeles element are separately installed with quarter-wave plate and analyzer, the light emitting diode by optical fiber one with
Quarter-wave plate connection, the analyzer are connect by optical fiber two with photoelectric converter, and the installed in front of the equipment end has
Digital display and operation button are provided with database in the computer.
Realize that steps are as follows:
Step 1: polarised light generates；Light from light emitting diode (λ=0.86) passes through optical fiber one and quarter-wave plate
Into Pokeles element (Bi4Ge3O2 crystal abbreviation BGO), under the action of quarter-wave plate, the light of light emitting diode becomes
Circularly polarized light；
Step 2: polarization photodegradation；Incident polarised light enters in BGO crystal, due to Pockels effect in BGO crystal
Effect, polarised light along X3 axis inject BGO crystal after, be decomposed into two bunch polarised lights, (Pockels effect be linear effect, only
It is present in certain crystal without symmetrical centre, when incident light is incident along the BGO optical axis of crystal, when electric field is not added, incident light exists
Do not occur birefringent in BGO crystal, after added electric field, BGO crystal induced birefringence, the phase of light changes, and passes through detection phase
Potential difference can reflect electric field strength)；
Step 3: direction changes；The direction of propagation of two bunch polarised lights in step 2 is consistent, and polarization direction is put down respectively
Row is in the X-axis and Y-axis of BGO crystal, since spread speed of the two bunch polarised lights in BGO crystal is different, as light beam is in BGO
The phase difference of propagation in crystal, two bunch polarised lights is gradually increased, by its phase difference after the outgoing of BGO crystal up to maximum, because of two
The polarization direction of birefringent light beam is inconsistent, they cannot directly generate interference and utilize analyzer to detect this phase difference
The polarization direction of this two birefringent light beam is become unanimously, to become same frequency, equidirectional coherent beam, generates interference,
In this way, phase modulated light is just become A M light, the detection of phase is become to the detection of light intensity；
Step 4: photoelectric conversion；Same frequency, equidirectional two birefringent light beam enter photoelectric converter by optical fiber two,
Interference light intensity is become electric signal by photoelectric converter, and filter is to the frequency other than the frequency point or the frequency point of specific frequency in electric signal
Rate is effectively filtered out, and is obtained the electric signal of a specific frequency and is passed to analog divider；
Step 5: digital processing；For analog divider by the building of mathematical model, the light intensity that will test is converted to electric field
The actual value of intensity simultaneously passes to computer with digital signal；
Step 6: electric field strength is shown；Computer handles digital signal, and passes through digital display for electric-field strength
Degree actual value is shown, and is stored in database.
As a kind of preferred embodiment of the invention, receiving room door is installed on the receiving room.
As a kind of preferred embodiment of the invention, handle is installed at the top of the equipment end.
As a kind of preferred embodiment of the invention, the optical electric field sensor is mounted on one end of insulating bar.
As a kind of preferred embodiment of the invention, the computer by observation circuit respectively with operation button and mould
Quasi- divider is electrically connected.
As a kind of preferred embodiment of the invention, the computer by instruction circuit respectively with digital display and
Light emitting diode is electrically connected.
As a kind of preferred embodiment of the invention, the battery by power supply circuit respectively with computer, simulation
Divider, filter, photoelectric converter, light emitting diode and digital display are electrically connected.
Beneficial effects of the present invention: a kind of super extra high voltage line insulator electric field distribution monitoring device of the invention, including
Equipment end, insulating bar, optical electric field sensor, computer, analog divider, filter, photoelectric converter, light emitting diode,
Battery, receiving room, optical fiber one, optical fiber two, bottom plate, quarter-wave plate, Pokeles element, analyzer, digital display,
Operation button, database, receiving room door and handle；
1. this super extra high voltage line insulator electric field distribution monitoring device uses advanced optical electric-field sensing technology, can
It is not influenced by the interference of electromagnetic field and amblent air temperature under hyperbaric environment, and contact can not be had in the case where not having a power failure
Mode to insulator hardware end measures insulator chain field distribution, and then analyzes the insulation situation of insulator chain, finds zero
Insulator can provide safeguard for the safe operation of transmission line of electricity and substation equipment, have extraordinary social benefit and warp
Ji benefit.
2. this super extra high voltage line insulator electric field distribution monitoring device can be improved extra high voltage network maintenance work
Efficiency reduces job costs, reduces transmission line of electricity risk runing time to ensure the safe operation of transmission line of electricity and utilizes light
It learns electric-field sensor and not only overcomes the drawbacks of existing electrical type electric field detection device can cause the Severe distortion of electric field, more can
Detect operation insulator chain field distribution data, accurately in the case where not influenced by ambient temperature and humidity to study operating status
Under various insulators degradation, a kind of completely new, effective technological means is provided.
3. this super extra high voltage line insulator electric field distribution monitoring device has light emitting and reception far from detection target
Device, and high sensitivity, measurement dynamic range is big, and neither by electromagnetic interference influence, measurement is again safe and reliable, has and widely answers
With prospect, from the point of view of safety and influence to tested electric field, passive optical electric field sensor is better than other methods, has resistance to
The insulation of high pressure height, high stable, non-inductive, resistance to electromagnetic interference, adverse environment resistant safety anti-explosive, small-size light-weight, control convenient for microcomputer
And the features such as remote sensing, it is that traditional detection means is incomparable, effectively overcomes various existing for traditional detection means
Drawback brings a major transformation to insulator electric field detection method.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of super extra high voltage line insulator electric field distribution monitoring device of the present invention；
Fig. 2 is a kind of equipment end diagrammatic cross-section of super extra high voltage line insulator electric field distribution monitoring device of the present invention；
Fig. 3 is a kind of optical electric field sensor section of super extra high voltage line insulator electric field distribution monitoring device of the present invention
Schematic diagram；
Fig. 4 is a kind of principle flow chart of super extra high voltage line insulator electric field distribution monitoring device of the present invention；
Fig. 5 is a kind of step flow chart of super extra high voltage line insulator electric field distribution monitoring device of the present invention；
In figure: 1- equipment end, 2- insulating bar, 3- optical electric field sensor, 4- computer, 5- analog divider, 6- filtering
Device, 7- photoelectric converter, 8- light emitting diode, 9- battery, 10- receiving room, 11- optical fiber one, 12- optical fiber two, 13- bottom plate,
14- quarter-wave plate, 15-Pokeles element, 16- analyzer, 17- digital display, 18- operation button, 19- database,
20- receiving room door, 21- handle.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Fig. 1 to Fig. 5 is please referred to, the present invention provides a kind of technical solution: a kind of super extra high voltage line insulator electric field distribution
Monitoring device, including equipment end 1, insulating bar 2 and optical electric field sensor 3 are sequentially installed with from right to left in the equipment end 1
Computer 4, analog divider 5, filter 6, photoelectric converter 7, light emitting diode 8 and battery 9 are set in the equipment end 1
It is equipped with receiving room 10, bottom plate 13 is provided in the optical electric field sensor 3, the top of the bottom plate 13 is equipped with Pokeles
Element 15, the both ends of the Pokeles element 15 are separately installed with quarter-wave plate 14 and analyzer 16, the light-emitting diodes
Pipe 8 is connect by optical fiber 1 with quarter-wave plate 14, and the analyzer 16 is connected by optical fiber 2 12 and photoelectric converter 7
It connects, the installed in front of the equipment end 1 statistics have shown device 17 and operation button 18, be provided with database in the computer 4
19。
Realize that steps are as follows:
Step 1: polarised light generates；Light from light emitting diode 8 (λ=0.86) passes through optical fiber 1 and a quarter
Wave plate 14 is into Pokeles element 15 (Bi4Ge3O2 crystal abbreviation BGO), under the action of quarter-wave plate 14, light-emitting diodes
The light of pipe 8 becomes circularly polarized light；
Step 2: polarization photodegradation；Incident polarised light enters in BGO crystal, due to Pockels effect in BGO crystal
Effect, polarised light along X3 axis inject BGO crystal after, be decomposed into two bunch polarised lights, (Pockels effect be linear effect, only
It is present in certain crystal without symmetrical centre, when incident light is incident along the BGO optical axis of crystal, when electric field is not added, incident light exists
Do not occur birefringent in BGO crystal, after added electric field, BGO crystal induced birefringence, the phase of light changes, and passes through detection phase
Potential difference can reflect electric field strength)；
Step 3: direction changes；The direction of propagation of two bunch polarised lights in step 2 is consistent, and polarization direction is put down respectively
Row is in the X-axis and Y-axis of BGO crystal, since spread speed of the two bunch polarised lights in BGO crystal is different, as light beam is in BGO
The phase difference of propagation in crystal, two bunch polarised lights is gradually increased, by its phase difference after the outgoing of BGO crystal up to maximum, because of two
The polarization direction of birefringent light beam is inconsistent, they cannot directly generate interference and utilize analyzer to detect this phase difference
16 become the polarization direction of this two birefringent light beam unanimously, to become same frequency, equidirectional coherent beam, generate dry
It relates to, in this way, phase modulated light is just become A M light, the detection of phase is become to the detection of light intensity；
Step 4: photoelectric conversion；Same frequency, equidirectional two birefringent light beam enter photoelectric converter by optical fiber 2 12
7, interference light intensity is become electric signal by photoelectric converter 7, other than filter 6 is to the frequency point or the frequency point of specific frequency in electric signal
Frequency effectively filtered out, obtain the electric signal of a specific frequency and pass to analog divider 5；
Step 5: digital processing；For analog divider 5 by the building of mathematical model, the light intensity that will test is converted to electricity
The actual value of field intensity simultaneously passes to computer 4 with digital signal；
Step 6: electric field strength is shown；Computer 4 handles digital signal, and will be electric by digital display 17
Field intensity actual value is shown, and is stored in database 19.
As a kind of preferred embodiment of the invention, receiving room door 20 is installed on the receiving room 10.
As a kind of preferred embodiment of the invention, the top of the equipment end 1 is equipped with handle 21.
As a kind of preferred embodiment of the invention, the optical electric field sensor 3 is mounted on one end of insulating bar 2.
As a kind of preferred embodiment of the invention, the computer 4 by observation circuit respectively with operation button 18
It is electrically connected with analog divider 5.
As a kind of preferred embodiment of the invention, the computer 4 by instruction circuit respectively with digital display
17 and light emitting diode 8 be electrically connected.
As a kind of preferred embodiment of the invention, the battery 9 by power supply circuit respectively with computer 4, mould
Quasi- divider 5, filter 6, photoelectric converter 7, light emitting diode 8 and digital display 17 are electrically connected.
Working principle: when using this super extra high voltage line insulator electric field distribution monitoring device, by this super extra-high crimping
Road insulator electric field distribution monitoring device is placed on suitable place, issues starting Monitoring instruction by operation button 18, calculates
Machine 4 controls light emitting diode 8 and works, and testing staff manipulates insulating bar 2 on shaft tower, makes the optics electricity that 2 end of insulating bar is fixed
Field sensor 3 along insulator axial scan, the light from light emitting diode 8 (λ=0.86) by optical fiber 1 and four/
One wave plate 14 is into Pokeles element 15 (Bi4Ge3O2 crystal abbreviation BGO), under the action of quarter-wave plate 14, luminous two
The light of pole pipe 8 becomes circularly polarized light, and incident polarised light enters in BGO crystal, due to the work of Pockels effect in BGO crystal
With polarised light is decomposed into two bunch polarised lights, (Pockels effect is linear effect, is only existed after X3 axis injection BGO crystal
In certain crystal without symmetrical centre, when incident light is incident along the BGO optical axis of crystal, when electric field is not added, incident light is in BGO crystalline substance
Do not occur birefringent in vivo, after added electric field, BGO crystal induced birefringence, the phase of light changes, can by detection phase difference
To reflect electric field strength), the direction of propagation of two bunch polarised lights is consistent, polarization direction be respectively parallel to BGO crystal X-axis and
Y-axis, since spread speed of the two bunch polarised lights in BGO crystal is different, with propagation of the light beam in BGO crystal, two beams
The phase difference of linearly polarized light is gradually increased, by its phase difference after the outgoing of BGO crystal up to maximum, because of the polarization side of two birefringent light beams
To inconsistent, they cannot directly generate interference, in order to detect this phase difference, using analyzer 16 by this two birefringent light beam
Polarization direction become unanimously, becoming same frequency, equidirectional coherent beam, interference is generated, in this way, just phase-modulation
Light becomes A M light, and the detection of phase is become to the detection of light intensity, and same frequency, equidirectional two birefringent light beam are logical
It crosses optical fiber 2 12 and enters photoelectric converter 7, interference light intensity is become electric signal by photoelectric converter 7, and filter 6 is to special in electric signal
The frequency point or the frequency other than the frequency point for determining frequency are effectively filtered out, and are obtained the electric signal of a specific frequency and are passed to mould
Quasi- divider 5, for analog divider 5 by the building of mathematical model, the light intensity that will test is converted to the actual value of electric field strength
And computer 4 is passed to digital signal, computer 4 handles digital signal, and passes through digital display 17 for electric field
Intensity actual value is shown, and is stored in database 19, and optical electric field sensor 3 need to all use passive device, is changed previous
The problems such as manually-operated uncertainty, poor repeatability, work on the spot intensity can be greatly reduced, improve measurement accuracy, and ensure
The safety of field operation has light emitting and reception device far from detection target, and high sensitivity, measurement dynamic range
Greatly, neither by electromagnetic interference influence, measurement is again safe and reliable, is with a wide range of applications, from safety and to tested electric field
Influence from the point of view of, passive optical electric field sensor 3 is better than other methods, have high pressure resistant high insulation, high stable, it is non-inductive,
Resistance to electromagnetic interference, adverse environment resistant safety anti-explosive, small-size light-weight are traditional detections convenient for microcomputer control and the features such as remote sensing
Means are incomparable, effectively overcome various drawbacks existing for traditional detection means, give insulator electric field detection method
Bring a major transformation.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, for this field skill
For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention
It is interior.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of super extra high voltage line insulator electric field distribution monitoring device, including equipment end (1), insulating bar (2) and optics electricity
Field sensor (3), which is characterized in that be sequentially installed with computer (4), analog divider from right to left in the equipment end (1)
(5), filter (6), photoelectric converter (7), light emitting diode (8) and battery (9) are provided with receipts on the equipment end (1)
It receives room (10), is provided with bottom plate (13) in the optical electric field sensor (3), is equipped at the top of the bottom plate (13)
The both ends of Pokeles element (15), the Pokeles element (15) are separately installed with quarter-wave plate (14) and analyzer
(16), the light emitting diode (8) is connect by optical fiber one (11) with quarter-wave plate (14), and the analyzer (16) passes through
Optical fiber two (12) is connect with photoelectric converter (7), and the installed in front of the equipment end (1) statistics have shown that device (17) and operation are pressed
Key (18), the computer (4) is interior to be provided with database (19).
2. a kind of super extra high voltage line insulator electric field distribution monitoring device according to claim 1, it is characterised in that: real
It is existing that steps are as follows:
Step 1: polarised light generates；Light from light emitting diode (8) (λ=0.86) passes through optical fiber one (11) and a quarter
Wave plate (14) is into Pokeles element (15) (Bi4Ge3O2 crystal abbreviation BGO), under the action of quarter-wave plate (14), hair
The light of optical diode (8) becomes circularly polarized light；
Step 2: polarization photodegradation；Incident polarised light enters in BGO crystal, due to the work of Pockels effect in BGO crystal
With polarised light is decomposed into two bunch polarised lights, (Pockels effect is linear effect, is only existed after X3 axis injection BGO crystal
In certain crystal without symmetrical centre, when incident light is incident along the BGO optical axis of crystal, when electric field is not added, incident light is in BGO crystalline substance
Do not occur birefringent in vivo, after added electric field, BGO crystal induced birefringence, the phase of light changes, can by detection phase difference
To reflect electric field strength)；
Step 3: direction changes；The direction of propagation of two bunch polarised lights in step 2 is consistent, and polarization direction is respectively parallel to
The X-axis and Y-axis of BGO crystal, since spread speed of the two bunch polarised lights in BGO crystal is different, as light beam is in BGO crystal
In propagation, the phase difference of two bunch polarised lights is gradually increased, by its phase difference after the outgoing of BGO crystal up to maximum, because two two-fold
The polarization direction of irradiating light beam is inconsistent, they cannot directly generate interference, in order to detect this phase difference, utilizes analyzer (16)
The polarization direction of this two birefringent light beam is become unanimously, to become same frequency, equidirectional coherent beam, generates interference,
In this way, phase modulated light is just become A M light, the detection of phase is become to the detection of light intensity；
Step 4: photoelectric conversion；Same frequency, equidirectional two birefringent light beam enter photoelectric converter by optical fiber two (12)
(7), interference light intensity is become electric signal by photoelectric converter (7), and filter (6) is to the frequency point of specific frequency in electric signal or the frequency
Frequency other than point is effectively filtered out, and is obtained the electric signal of a specific frequency and is passed to analog divider (5)；
Step 5: digital processing；For analog divider (5) by the building of mathematical model, the light intensity that will test is converted to electric field
The actual value of intensity simultaneously passes to computer (4) with digital signal；
Step 6: electric field strength is shown；Computer (4) handles digital signal, and will be electric by digital display (17)
Field intensity actual value is shown, and is stored in database (19).
3. a kind of super extra high voltage line insulator electric field distribution monitoring device according to claim 1, it is characterised in that: institute
It states and receiving room door (20) is installed on receiving room (10).
4. a kind of super extra high voltage line insulator electric field distribution monitoring device according to claim 1, it is characterised in that: institute
It states and handle (21) is installed at the top of equipment end (1).
5. a kind of super extra high voltage line insulator electric field distribution monitoring device according to claim 1, it is characterised in that: institute
State one end that optical electric field sensor (3) is mounted on insulating bar (2).
6. a kind of super extra high voltage line insulator electric field distribution monitoring device according to claim 1, it is characterised in that: institute
It states computer (4) and is electrically connected respectively with operation button (18) and analog divider (5) by observation circuit.
7. a kind of super extra high voltage line insulator electric field distribution monitoring device according to claim 1, it is characterised in that: institute
It states computer (4) and is electrically connected respectively with digital display (17) and light emitting diode (8) by instruction circuit.
8. a kind of super extra high voltage line insulator electric field distribution monitoring device according to claim 1, it is characterised in that: institute
State battery (9) by power supply circuit respectively with computer (4), analog divider (5), filter (6), photoelectric converter (7),
Light emitting diode (8) and digital display (17) are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811159865.7A CN109061327A (en) | 2018-09-30 | 2018-09-30 | A kind of super extra high voltage line insulator electric field distribution monitoring device |
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|---|---|---|---|
| CN201811159865.7A CN109061327A (en) | 2018-09-30 | 2018-09-30 | A kind of super extra high voltage line insulator electric field distribution monitoring device |
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| CN109061327A true CN109061327A (en) | 2018-12-21 |
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| CN201811159865.7A Pending CN109061327A (en) | 2018-09-30 | 2018-09-30 | A kind of super extra high voltage line insulator electric field distribution monitoring device |
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| CN113093071A (en) * | 2021-04-08 | 2021-07-09 | 广东电网有限责任公司 | High-voltage operation safe distance detection device |
| CN116718817A (en) * | 2023-08-08 | 2023-09-08 | 泉欣电力(福建)有限公司 | Multifunctional environment-friendly electric power instrument |
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Application publication date: 20181221 |
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