CN108169647A - A kind of PD meter for being used to detect high-tension switch cabinet - Google Patents
A kind of PD meter for being used to detect high-tension switch cabinet Download PDFInfo
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- CN108169647A CN108169647A CN201810189101.6A CN201810189101A CN108169647A CN 108169647 A CN108169647 A CN 108169647A CN 201810189101 A CN201810189101 A CN 201810189101A CN 108169647 A CN108169647 A CN 108169647A
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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
- G01R31/1227—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 of components, parts or materials
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Abstract
This application discloses a kind of for detecting the PD meter of high-tension switch cabinet, including：Metal shell is located at sequentially connected high-temperature superconductor capacitive coupling plate, superconductor communication cable and signal processing module inside metal shell；Metal shell includes the head being connected with each other and sensing side；The one side that sensing side is contacted with high-tension switch cabinet is equipped with insulating layer, and insulating layer is covered in the inner surface of sensing side；High-temperature superconductor capacitive coupling plate is contacted with insulating layer；Superconductor communication cable self-induction side internal stretch is connect to the inside on head with signal processing module.PD meter provided by the embodiments of the present application, utilize the interference of metal shell shielding external electromagnetic wave, high-temperature superconductor capacitive coupling plate is avoided to charge using insulating layer, enable high-temperature superconductor capacitive coupling plate that generated electromagnetic wave during high-tension switch cabinet partial discharge is converted to electric signal transmission, PD meter is made to measure anti-interference and fidelity, in addition, the PD meter is simple in structure easy to carry.
Description
Technical field
This application involves analysis and survey control technology field more particularly to a kind of partial discharges for being used to detect high-tension switch cabinet
Instrument.
Background technology
High-tension switch cabinet is the equipment for electric system, when electric system generated electricity, transmitted electricity, distribution, electric energy turn
When changing in consumption process, high-tension switch cabinet play break-make, control and protection the effects that.High-tension switch cabinet is a kind of voltage class
In the electric equipment products of 3.6kV~550kV, be primarily adapted for use in power plant, substation, petrochemical industry, metallurgical steel rolling, industry light industry textile industry,
The various different places such as industrial enterprise, residential quarters, skyscraper.
High-tension switch cabinet plays an important role in electric system, this protection for allowing for high-tension switch cabinet seems particularly
It is important.Once high-tension switch cabinet breaks down, the normal operation of electric system can be largely influenced.High-tension switch cabinet it is exhausted
It is if exhausted there are internal field higher (field strength distribution is uneven) or because installing operational issue, solid in device procedures in edge structure
Edge is occurred the reasons such as destruction by mechanical force and forms defect, these running positions are easy for insulation breakdown occur, occur
Shelf depreciation.These electric discharges constantly sprawling and development, can cause the damage of insulation.It such as develops as one pleases, insulation can be caused to lose and be situated between
Electrical property and cause the accident.Shelf depreciation is endangered caused by high-tension switch cabinet mainly to be had：Medium local temperature is made to increase, oxidation
Speed is accelerated, and declines the electrical of medium, mechanical performance；Charged particle is caused to hit medium, cuts off molecular structure；Make in electric discharge
Chemical reaction, which can occur, with medium with lower generated active gases causes dielectric behavior to be deteriorated.Currently used for detecting high-voltage switch gear
The instrument of cabinet, complicated not readily portable, poor anti jamming capability, and also accuracy is low so that the detection work of staff
The problem of complicated and heavy workload.
Invention content
This application provides a kind of for detecting the PD meter of high-tension switch cabinet, to solve detection high-tension switch cabinet office at present
The problem of instrument of portion's electric discharge is not readily portable, poor anti jamming capability and accuracy in detection are low.
This application provides a kind of for detecting the PD meter of high-tension switch cabinet, including：
Metal shell, be located at high-temperature superconductor capacitive coupling plate inside the metal shell, superconductor communication cable and
Signal processing module；The high-temperature superconductor capacitive coupling plate, the superconductor communication cable and the signal processing module according to
Secondary connection；
The metal shell includes head and the sensing side being connect with the head；The sensing side connects with high-tension switch cabinet
Tactile one side be equipped with insulating layer and, the insulating layer be covered in it is described sensing side inner surface；The high-temperature superconductor body capacitance
Coupling plate is contacted with the insulating layer；
The head is communicated with the inside of the sensing side, and the signal processing module is fixed in the head, described
Superconductor communication cable is connect from the sensing side internal stretch to the inside on the head with the signal processing module.
Optionally, the inside of the metal shell is additionally provided with carrier ring, and the carrier ring is located at the head and the sense
In place of the connection for answering side.
Optionally, the sensing side for square structure and, the corner of the square structure is fillet；In the fillet
Position be equipped with iron rubidium boron permanent magnet.
Optionally, the high-temperature superconductor capacitive coupling plate be a diameter of 4.5cm circular configuration and, the insulation
The also round structure in part that layer is contacted with the high-temperature superconductor capacitive coupling plate.
Optionally, it is equipped with hickey outside the head.The hickey is connect with the signal processing module.
Optionally, the signal processing module includes：Sequentially connected power supply, filter circuit, signal amplification circuit and defeated
Go out circuit；The filter circuit is connect with the superconductor communication cable, and the output circuit is connect with the hickey.
Optionally, the material of the insulating layer and the carrier ring is respectively insulating materials.
Optionally, the material of the metal shell is aluminium alloy.
Optionally, the filter circuit is quadravalence Butterworth bandwidth-limited circuit.
By above technical scheme it is found that this application provides a kind of for detecting the PD meter of high-tension switch cabinet, including：Gold
Belong to shell, be located at sequentially connected high-temperature superconductor capacitive coupling plate inside the metal shell, superconductor communication cable and
Signal processing module；The metal shell includes head and the sensing side being connect with the head；The sensing side is pressed off with height
The one side for closing cabinet contact is equipped with insulating layer, and insulating layer is covered in the inner surface of the sensing side；The high-temperature superconductor body capacitance coupling
Plywood is contacted with the insulating layer；The head is communicated with the inside of the sensing side, and the signal processing module is fixed on institute
It states in head, inside of the superconductor communication cable from the sensing side internal stretch to the head, at the signal
Manage module connection.PD meter provided by the embodiments of the present application using the interference of metal shell shielding external electromagnetic wave, utilizes insulation
Layer avoids high-temperature superconductor capacitive coupling plate from charging so that high-temperature superconductor capacitive coupling plate can be by high-tension switch cabinet partial discharge when institute
The electromagnetic wave of generation couples as much as possible, and is converted to electric signal transmission, ensures the anti-interference and fidelity of PD meter, so as to
Staff detects partial discharge situation, in addition, the PD meter is simple in structure, also allows for carrying.
Description of the drawings
In order to illustrate more clearly of the technical solution of the application, attached drawing needed in case study on implementation will be made below
Simply introduce, it should be apparent that, for those of ordinary skills, in the premise of not making the creative labor property
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of sectional view of PD meter for being used to detect high-tension switch cabinet provided by the embodiments of the present application；
Fig. 2 is a kind of schematic bottom view of PD meter for being used to detect high-tension switch cabinet provided by the embodiments of the present application；
Fig. 3 is a kind of signal processing module knot of PD meter for being used to detect high-tension switch cabinet provided by the embodiments of the present application
Composition；
Fig. 4 is a kind of circuit of the filter circuit of PD meter for being used to detect high-tension switch cabinet provided by the embodiments of the present application
Figure.
It illustrates：
Wherein, 1- metal shells；2- high-temperature superconductor capacitive coupling plates；3- superconductor communication cables；4- signal processing moulds
Block；5- insulating layers；6- carrier rings；7- iron rubidium boron permanent magnets；8- hickeys；11- heads；12- senses side；41- power supplys；42-
Filter circuit；43- signal amplification circuits；44- output circuits.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with attached drawing, it is right
Technical solution in the embodiment of the present application is clearly and completely described.
Referring to Fig. 1, the embodiment of the present application provides a kind of PD meter for being used to detect high-tension switch cabinet, including：
Metal shell 1, high-temperature superconductor capacitive coupling plate 2,3 and of superconductor communication cable being located inside metal shell 1
Signal processing module 4；High-temperature superconductor capacitive coupling plate 2, superconductor communication cable 3 and signal processing module 4 are sequentially connected.It is high
Cabinet compress switch when shelf depreciation occurs, shelf depreciation generate electromagnetic wave will along high-tension switch cabinet Insulated positions or
The gap of babinet joint blazes abroad, and the electromagnetic wave that high-temperature superconductor capacitive coupling plate 2 can generate shelf depreciation couples
It onto plank, is equivalent to and senses electromagnetic wave, then electromagnetic wave signal is converted into electric signal, transmitted by superconductor communication cable 3
It is handled to signal processing module 4.Since high-temperature superconductor capacitive coupling plate 2 and superconductor communication cable 3 are all superconductors
Material, resistance is zero at a certain temperature, also avoids the loss of electric signal in detection and transmission process in this way, what fidelity received
With the signal of transmission.
In addition, since high-tension switch cabinet is applied in electric system, also have in the environment of high-tension switch cabinet work
Other power equipments are being run, and it is dry to the detection generation of PD meter also inevitably to generate electric signal, electromagnetic wave and magnetic field
It disturbs, so can effectively be carried out in the application using entire external structure of the metal shell 1 as PD meter to interference signal
Shielding ensures the accuracy of PD meter detection.Specifically, the material of metal shell 1 is aluminium alloy.
Metal shell 1 includes head 11 and the sensing side 12 being connect with head 11；Sensing side 12 is contacted with high-tension switch cabinet
One side be equipped with insulating layer 5 and, insulating layer 5 be covered in sensing side 12 inner surface；High-temperature superconductor capacitive coupling plate 2 with
Insulating layer 5 contacts.Head 11 is cuboid or cylinder, and cross-sectional area is less than the cross-sectional area of sensing side 12, convenient for work
Personnel's hand is taken.Sensing side 12 is positioned over the surface at high-tension switch cabinet detection when using, insulating layer 5 can completely cut off high-temperature superconductor
Capacitive coupling plate 2 and high-tension switch cabinet surface, avoid 2 high-tension switch cabinet of high-temperature superconductor capacitive coupling plate from being in direct contact, and influence
Acquire electromagnetic wave signal.
Specifically, the material of insulating layer 5 can be the insulating materials such as polyvinyl chloride, ensure the insulation performance of insulating layer 5.
Head 11 is communicated with sensing the inside of side 12, and signal processing module 4 is fixed in head 11, superconductor communication cable
3 self-induction side, 12 internal stretch is connect to the inside on head 11 with signal processing module 4.By superconduction body communication electricity in the application
Cable 3 and signal processing module 4 are all placed in metal shell 1, equally by the shielding action of metal shell 1, avoid interference signal
The transmission of signal is influenced with the process handled.
By above technical scheme it is found that this application provides a kind of for detecting the PD meter of high-tension switch cabinet, including：Gold
Belong to shell 1, sequentially connected high-temperature superconductor capacitive coupling plate 2,3 and of superconductor communication cable being located inside metal shell 1
Signal processing module 4；Metal shell 1 includes head 11 and the sensing side 12 being connect with head 11；Sense side 12 and high-voltage switch gear
The one side of cabinet contact is equipped with insulating layer 5, and insulating layer 5 is covered in the inner surface of sensing side 12；High-temperature superconductor capacitive coupling plate 2 with
Insulating layer 5 contacts；Head 11 is communicated with sensing the inside of side 12, and signal processing module 4 is fixed in head 11, superconduction body communication
3 self-induction side of cable, 12 internal stretch is connect to the inside on head 11 with signal processing module 4.It is provided by the embodiments of the present application
PD meter is shielded the interference of external electromagnetic wave using metal shell 1, high-temperature superconductor capacitive coupling plate 2 is avoided using insulating layer 5
Electrification so that high-temperature superconductor capacitive coupling plate 2 can couple generated electromagnetic wave during high-tension switch cabinet partial discharge as much as possible,
And electric signal transmission is converted to, ensure the anti-interference and fidelity of PD meter, so that staff detects partial discharge situation, separately
Outside, the PD meter is simple in structure, also allows for carrying.
Optionally, the inside of metal shell 1 is additionally provided with carrier ring 6, and carrier ring 6 is located at head 11 with sensing the connection of side 12
Part.Specifically, the material of carrier ring 6 is insulating materials.The effect of carrier ring 6 is identical with the effect of insulating layer 5, can will be golden
The head 11 and sensing side 12 for belonging to shell 1 separate, and avoid high-temperature superconductor capacitive coupling plate 2 and 4 mutual shadow of signal processing module
It rings, the data for making detection are inaccurate.
Optionally, as shown in Fig. 2, sensing side 12 for square structure and, the corner of square structure is fillet；In fillet
Position be equipped with iron rubidium boron permanent magnet 7.High-temperature superconductor capacitive coupling plate 2 be a diameter of 4.5cm circular configuration and, absolutely
The also round structure in part that edge layer 5 is contacted with high-temperature superconductor capacitive coupling plate 2.Square structure with grounded angle corners,
Not only so that the space inside sensing side 12 is big, high-temperature superconductor capacitive coupling plate 2 is made more to be fixed easily, but also sensing side 12 has
There is shatter-resistant characteristic, sharp right-angle structure is avoided to be collided with other objects and is damaged.In addition, square structure also allows for placing iron
Rubidium boron permanent magnet 7.On four fillets for contacting one side with high-tension switch cabinet in sensing side 12, an iron rubidium boron permanent magnet is respectively installed
7, it is also made of metal due to the surface of high-tension switch cabinet, then iron rubidium boron permanent magnet 7 can be adsorbed in high-tension switch cabinet
Surface, and then PD meter is made to be fixed on the surface of high-tension switch cabinet, PD meter is made to be not susceptible to shake when detecting, reduces detection
Error.
Optionally, 11 outside of head is equipped with hickey 8；Hickey 8 is connect with signal processing module 4.Spiral interface 8
It is connected for external signal line, by treated, electric signal is transmitted to by hickey 8 outside PD meter signal processing module 4
Portion, so that external equipment is further processed signal.Hickey 8 can ensure to be not easy to loosen during signal wire connection, avoid making
Into signal interruption or detection error.
Optionally, as shown in figure 3, signal processing module 4 includes：Sequentially connected power supply 41, filter circuit 42, signal are put
Big circuit 43 and output circuit 44；Filter circuit 42 is connect with superconductor communication cable 3, and output circuit 44 connects with hickey 8
It connects.High-tension switch cabinet at work, can generate the electromagnetic wave signal of many frequency ranges, but in case of partial discharge phenomenon, office
The frequency range of electromagnetic wave that portion's electric discharge generates is different from the frequency range of other electromagnetic waves, it is considered that 10MHz-60MHz is partial discharge
Electromagnetic wave predominantly detects frequency range；The electromagnetic wave signal generated during in order to be quickly detected shelf depreciation, the embodiment of the present application
It is middle to be filtered out the frequency range for not needing to detection using filter circuit 42, retain the signal that partial discharge electromagnetic wave generates, ensure the standard of detection
True property.Since the electromagnetic wave signal of shelf depreciation is generally all fainter, in order to receive the signal after filtering, PD meter is just
Very high receiving sensitivity is required, therefore in PD meter interior design amplifying circuit 43, primarily to improving entire office
The noise coefficient of instrument is put, accurate signal can be received.
Optionally, as shown in figure 4, filter circuit 42 is the quadravalence Butterworth bandwidth-limited circuit based on LC elements.Tool
Body, mainly by LC parallel circuits, LC series circuits, 50 Ω resistance and alternating current in the quadravalence Butterworth bandwidth-limited circuit
Source forms, and filter circuit 42 uses FR4 planks, and using high frequency capacitance inductance, capacitance is used element using 0403 encapsulation, inductance
0603 encapsulation, to reduce the size of circuit board.
In the embodiment of the present application, high-temperature superconductor capacitive coupling plate 2 uses high temperature superconducting materia, has extraordinary conduction
Performance, thermal stability and good mechanical strength extremely can accurately collect the signal of high-tension switch cabinet；Shell is
There are a layer insulating 5 in Al-alloy metal, inside, and package high-temperature superconductor capacitive coupling plate 2 prevents from contacting influence with metal shell 1
Signal is acquired, signal processing module 4 is embedded in inside metal shell 1, can shield more interference signals.In order to make PD meter
Signal, all connections of internal superconductor communication cable 3, filter circuit 42, signal amplification circuit 43 can completely be preserved
Conducting wire uses high temperature superconducting materia to reduce the loss of acquisition signal, ensures that the signal of acquisition is accurate.Also, in the application
For detecting the maximum height of the PD meter of high-tension switch cabinet as 9CM, this height is to contact high-tension switch cabinet one from insulating layer 5
To the maximum normal distance of hickey 8, embedded signal processing module 4, superconductor communication cable 3, high-temperature superconductor are electric in face
Hold coupling plate 2 and carrier ring 6 to be fixed using electric insulating sealant, therefore, the PD meter in the application is easy to carry, facilitates behaviour
Make, be not easy to slide from hand, by actual test it is found that even if PD meter falls at 1.5m, can work normally.
By above technical scheme it is found that this application provides a kind of for detecting the PD meter of high-tension switch cabinet, including：Gold
Belong to shell 1, sequentially connected high-temperature superconductor capacitive coupling plate 2,3 and of superconductor communication cable being located inside metal shell 1
Signal processing module 4；Metal shell 1 includes head 11 and the sensing side 12 being connect with head 11；Sense side 12 and high-voltage switch gear
The one side of cabinet contact is equipped with insulating layer 5, and insulating layer 5 is covered in the inner surface of sensing side 12；High-temperature superconductor capacitive coupling plate 2 with
Insulating layer 5 contacts；Head 11 is communicated with sensing the inside of side 12, and signal processing module 4 is fixed in head 11, superconduction body communication
3 self-induction side of cable, 12 internal stretch is connect to the inside on head 11 with signal processing module 4.It is provided by the embodiments of the present application
PD meter is shielded the interference of external electromagnetic wave using metal shell 1, high-temperature superconductor capacitive coupling plate 2 is avoided using insulating layer 5
Electrification so that high-temperature superconductor capacitive coupling plate 2 can couple generated electromagnetic wave during high-tension switch cabinet partial discharge as much as possible,
And electric signal transmission is converted to, ensure the anti-interference and fidelity of PD meter, so that staff detects partial discharge situation, separately
Outside, the PD meter is simple in structure, also allows for carrying.
Those skilled in the art will readily occur to the application its after considering specification and putting into practice application disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.Description and embodiments are considered only as illustratively, and the true scope of the application is pointed out by claim.
It should be understood that the precision architecture that the application is not limited to be described above and be shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Above-described the application embodiment is not formed to this Shen
Please protection domain restriction.
Claims (9)
1. a kind of PD meter for being used to detect high-tension switch cabinet, which is characterized in that including：
Metal shell (1) is located at the internal high-temperature superconductor capacitive coupling plate (2) of the metal shell (1), superconduction body communication electricity
Cable (3) and signal processing module (4)；The high-temperature superconductor capacitive coupling plate (2), the superconductor communication cable (3) and institute
Signal processing module (4) is stated to be sequentially connected；
The sensing side (12) that the metal shell (1) connect including head (11) and with the head (11)；The sensing side
(12) one side contacted with high-tension switch cabinet be equipped with insulating layer (5) and, the insulating layer (5) is covered in the sensing side
(12) inner surface；The high-temperature superconductor capacitive coupling plate (2) contacts with the insulating layer (5)；
The head (11) communicates with the inside of sensing side (12), and the signal processing module (4) is fixed on the head
(11) in, inside of the superconductor communication cable (3) from sensing side (12) internal stretch to the head (11), with institute
State signal processing module (4) connection.
2. PD meter according to claim 1, which is characterized in that the inside of the metal shell (1) is additionally provided with carrier ring
(6), the carrier ring (6) is located at the head (11) and the connection part of sensing side (12).
3. PD meter according to claim 2, which is characterized in that sensing side (12) for square structure and, it is described
The corner of square structure is fillet；Iron rubidium boron permanent magnet (7) is equipped in the position of the fillet.
4. PD meter according to claim 3, which is characterized in that the high-temperature superconductor capacitive coupling plate (2) is diameter
For 4.5cm circular configuration and, the part that the insulating layer (5) contacts with the high-temperature superconductor capacitive coupling plate (2) is same
Sample is circular configuration.
5. PD meter according to claim 4, which is characterized in that hickey (8) is equipped with outside the head (11)；Institute
Hickey (8) is stated to connect with the signal processing module (4).
6. PD meter according to claim 5, which is characterized in that the signal processing module (4) includes：It is sequentially connected
Power supply (41), filter circuit (42), signal amplification circuit (43) and output circuit (44)；The filter circuit (42) surpasses with described
Conductor communication cable (3) connects, and the output circuit (44) connect with the hickey (8).
7. PD meter according to claim 6, which is characterized in that the insulating layer (5) and the material of the carrier ring (6)
Respectively insulating materials.
8. PD meter according to claim 7, which is characterized in that the material of the metal shell (1) is aluminium alloy.
9. PD meter according to claim 6, which is characterized in that the filter circuit (42) is quadravalence Butterworth band logical
Filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189101.6A CN108169647A (en) | 2018-03-08 | 2018-03-08 | A kind of PD meter for being used to detect high-tension switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189101.6A CN108169647A (en) | 2018-03-08 | 2018-03-08 | A kind of PD meter for being used to detect high-tension switch cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN108169647A true CN108169647A (en) | 2018-06-15 |
Family
ID=62511095
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810189101.6A Pending CN108169647A (en) | 2018-03-08 | 2018-03-08 | A kind of PD meter for being used to detect high-tension switch cabinet |
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| CN (1) | CN108169647A (en) |
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| CN109031167A (en) * | 2018-08-16 | 2018-12-18 | 广东电网有限责任公司 | Magnetic field detection component, switchgear and distribution system |
| CN113884848A (en) * | 2021-09-23 | 2022-01-04 | 浙江华云电力工程设计咨询有限公司 | Anti-transient pulse interference switch cabinet partial discharge detection system |
| CN117092455A (en) * | 2022-11-01 | 2023-11-21 | 特变电工山东鲁能泰山电缆有限公司 | Partial discharge detection device and partial discharge detection system |
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| CN207832949U (en) * | 2018-03-08 | 2018-09-07 | 云南电网有限责任公司电力科学研究院 | A kind of PD meter for detecting high-tension switch cabinet |
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| CN113884848A (en) * | 2021-09-23 | 2022-01-04 | 浙江华云电力工程设计咨询有限公司 | Anti-transient pulse interference switch cabinet partial discharge detection system |
| CN117092455A (en) * | 2022-11-01 | 2023-11-21 | 特变电工山东鲁能泰山电缆有限公司 | Partial discharge detection device and partial discharge detection system |
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Application publication date: 20180615 |
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| RJ01 | Rejection of invention patent application after publication |