CN108346951A - A kind of anticorona lead of high pressure and production method - Google Patents
A kind of anticorona lead of high pressure and production method Download PDFInfo
- Publication number
- CN108346951A CN108346951A CN201710062798.6A CN201710062798A CN108346951A CN 108346951 A CN108346951 A CN 108346951A CN 201710062798 A CN201710062798 A CN 201710062798A CN 108346951 A CN108346951 A CN 108346951A
- Authority
- CN
- China
- Prior art keywords
- lead
- anticorona
- wire
- high pressure
- tubular structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/06—Extensible conductors or cables, e.g. self-coiling cords
- H01B7/065—Extensible conductors or cables, e.g. self-coiling cords having the shape of an helix
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/223—Longitudinally placed metal wires or tapes forming part of a high tensile strength core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/20—Connectors or connections adapted for particular applications for testing or measuring purposes
Abstract
The present invention provides a kind of anticorona lead of high pressure and production method, the anticorona lead of high pressure is anticorona for high-potting, including：The helically lead of tubular structure and the equal crimp head positioned at the lead both ends；The conductor part of the lead uses rigid wire, the insulated part of the lead to use flexible insulating material；Wherein, the radius of the helical tubular structure and high-potting voltage are proportional.The anticorona lead of high pressure provided by the invention, it is simple in structure, it is firm easy-to-use, it can be advantageously applied to field test, realize anti-corona effects.
Description
Technical field
The present invention relates to technical field of high voltage, and in particular to a kind of anticorona lead of high pressure and production method.
Background technology
It is because surface field intensity is excessively high, when electric field strength is increased to centainly that conductor generates corona discharge under high voltages
When value, since free of air will discharge, corona is formed.Because the peripheral electric field in corona is very weak, do not collide trip
From corona periphery charged particle is substantially electron ion, these ions just form corona discharge current.Briefly, curvature
The small conductor electrode of radius just produces corona to atmospherical discharges.Corona is in addition to generating halation, also electric discharge sound,
Corona current is a desultory high-frequency pulse current, causes active loss and radio interference of communications, generate ozone and
Nitrogen oxides pollution environment.Corona phenomenon is eliminated, it is ten correctly to determine anti-corona structure parameter and select good Anti-Corona Material
Divide important.Under normal circumstances, transformer station flexible bus, overhead transmission line generally use split conductor improve discharge capacity reduction table
Face electric field strength, substation's hard bus use hollow circular-tube, and power cable is by using large size conductor and semiconductive shielding layer
Reduce electric field strength, the design of high-voltage motor end is also required to consider corona.But 220kV or more overhead transmission lines usually exist
Corona occurs.
Power equipment usually requires to carry out high-potting, with verification manufacture and running electrical insulation properties, dominant term
Mesh includes megger test, dielectric loss angle tangent measures, leakage current and DC break down voltage, ac voltage withstanding are tested, and rear two
The voltage that person is commonly applied is more than nominal operation working voltage.Voltage is very high when high voltage electric equipment is tested, tested device, high pressure
Testing equipment connector and lead easily cause corona.In general, the high-potting corona time is short, power is smaller, environment will not be caused
Interference, or a large amount of capacity of experiment of consumption.High-voltage connection electric discharge corona loss can influence insulation dielectric loss angle tangent and measure, and one
As test voltage it is low, be not in electric discharge phenomena.Therefore, the anticorona of high-tension testing apparatus does not draw attention, especially existing
Field test.
In recent years, the development of extra-high voltage technology, Partial Discharge Detection gradually become the important detection hand of high voltage electric equipment
Section, such as transformer, GIS, cable manufacture are required to test shelf depreciation, and the corona interference during high-potting must carry out
Limitation.Research institution and manufactory since laboratory condition is preferable, and it is fixed use, hollow braided yarn may be used and reach expansion
The method of big equivalent redius.But when on-the-spot test, hollow braided yarn intensity deficiency is easily damaged.Patent
CN201310084132.2/CN203164229U proposes a kind of anticorona voltage equalizing ball lead of ultra-high/extra-high voltage, will using lead rope
Multiple sunken inside voltage equalizing balls are strung as high-voltage connection.Although the above anticorona method is effective, complicated, of high cost, appearance is made
It is fragile to be not suitable with field test use.
Invention content
For the defects in the prior art, a kind of anticorona lead of high pressure of present invention offer and production method, the present invention carry
The anticorona lead of high pressure of confession, it is simple in structure, it is firm easy-to-use, it can be advantageously applied to field test, realize anti-corona effects.
In order to solve the above technical problems, the present invention provides following technical scheme：
In a first aspect, the present invention provides a kind of anticorona lead of high pressure, it is anticorona for high-potting, including：In spiral shell
Revolve the lead of tubular structure and the equal crimp head positioned at the lead both ends；
The conductor part of the lead uses rigid wire, the insulated part of the lead to use flexible insulating material；
Wherein, the radius of the helical tubular structure and high-potting voltage are proportional.
Further, the rigid wire is good conductor conducting wire or compound wire.
Further, the compound wire is copper-clad steel core wire, steel wire or aluminium alloy wire.
Further, the electric field strength of the crimping head surface is less than default electric field intensity value.
Further, helical tubular structure spiral tube spacing size when in maximum tension state should ensure that described
Lead wire surface field strength when in maximum tension state is multiplied by default safety coefficient less than bloom field strength.
Second aspect, the present invention also provides a kind of production methods of the anticorona lead of high pressure as described above, including：
S1, according to high-voltage test current and preset operating time, determine the cross-sectional sizes of rigid wire；
S2, the radius that helical tubular structure is determined according to high-potting voltage and bloom field strength；
S3, rigid wire length is determined according to the radius of helical tubular structure and the wire length of needs；
S4, the rigid wire length determined according to step S3 intercept the rigid wire of corresponding length and are coiled into solenoidal structure,
Keep its fixed-type；
S5, equal crimp head is installed at the lead both ends of helically tubular structure.
Further, the S5 is specifically included：
It is mounted directly at the lead both ends of helically tubular structure and presses element；Or,
Connecting terminal is installed at the lead both ends of helically tubular structure, using pressure measure or utilizes the high pressure anti-electric
The uniform measure of dizzy lead connected device carries out pressure to the connecting terminal of installation and handles, and obtains uniform connector.
As shown from the above technical solution, the anticorona lead of high pressure provided by the invention, it is simple in structure, it is firm easy-to-use, it can
It is advantageously applied to field test, realizes anti-corona effects.Further, since lead provided by the invention uses rigid wire, therefore
With good elasticity and retractility.Further, since the helix tube radius of lead provided by the invention can be according to high pressure
Test voltage is adjusted, therefore can expand plurality of specifications.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram for the anticorona lead of high pressure that one embodiment of the invention provides；
Fig. 2 is that the diameter of the lead for the helically tubular structure that one embodiment of the invention provides indicates schematic diagram；
Fig. 3 is a kind of schematic diagram for the rigid wire that one embodiment of the invention provides；
Fig. 4 is another schematic diagram for the rigid wire that one embodiment of the invention provides；
Fig. 5 is the flow chart for the anticorona lead production method of high pressure that another embodiment of the present invention provides.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention carries out clear, complete description, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
For the defects in the prior art, the present invention provides a kind of anticorona lead of high pressure, and the equivalent redius of lead is put
Greatly, wire surface electric field strength is reduced, corona discharge is avoided under certain voltage, to realize anti-corona effects, while structure
Simply, firm easy-to-use, field test can be advantageously applied to.
Referring to Fig. 1, one embodiment of the invention provides a kind of anticorona lead of high pressure, anticorona for high-potting, should
The anticorona lead of high pressure includes：The helically lead 1 of tubular structure and the equal crimp head 2 positioned at the lead both ends；It is described to draw
The conductor part of line uses rigid wire, the insulated part of the lead to use flexible insulating material；The flexible insulating material
Coat the rigid wire.Wherein, the radius of the helical tubular structure and high-potting voltage are proportional.
Optionally, grading ring realization may be used in the equal crimp head 2.
Referring to Fig. 2, the radius r=R/2 of the helical tubular structure, radius r and high-potting voltage are proportional.
As it can be seen that the anticorona lead of high pressure provided in an embodiment of the present invention is coiled into elastic helix tubulose and is led using rigid wire
Line expands conductor equivalent redius by helix tube, Electric Field Indensity on Surface of Conductor is reduced, to improve discharge inception voltage.Preferably, draw
Good conductor or compound wire such as copper-clad steel core wire, steel wire, aluminium alloy wire, the copper that line conductor part can select rigidity relatively good
Aluminium clad steel wire etc..Rigid wire radius is designed according to load-bearing and aeroelastic requirements, and copper aluminium conductor can be designed to standard section, side
Just it selects, or selects steel wire, aluminium alloy conductor, discharge capacity is met the requirements.In addition, can be covered outside the rigid wire soft
Property surface insulation layer (such as polydimethylsiloxane), be made spiral spring structure, both ends use equal crimp head.
When it is implemented, spiral tube spacing should carry out electromagnetic field simulation, when determining maximum tension length, surface electric field intensity is less than
Bloom field strength is multiplied by safety coefficient.It is designed when it is implemented, solenoid can refer to spring wire.
In a kind of optional embodiment, referring to Fig. 3, the rigid wire is good conductor conducting wire.
In a kind of optional embodiment, referring to Fig. 4, the rigid wire is compound wire, such as illustrated in fig. 3 good
Conductive copper clad steel wire.In addition, the compound wire can also be steel wire or aluminium alloy wire.
The lead of helically tubulose provided in an embodiment of the present invention be used for high-tension testing apparatus in, lead by electric current compared with
It is small, it is substantially at high pressure equipotential, the equivalent redius of lead is similar to solenoid radius.Therefore, the helical tubular structure expands
The big equivalent redius of lead, reduces wire surface electric field strength, to improve discharge inception voltage.In actual use, Ke Yigen
Solenoid radius is determined according to the voltage used.
The connector at the lead both ends, which can voluntarily be taken, presses measure or the pressure facility using lead connected device,
Joint area surface field intensity is reduced, is allowed to be less than preset value.
In a kind of optional embodiment, helical tubular structure spiral tube spacing when in maximum tension state is big
It is small to should ensure that lead wire surface field strength when in maximum tension state is multiplied by default safety coefficient less than bloom field strength.
As shown from the above technical solution, the anticorona lead of high pressure provided in an embodiment of the present invention, it is simple in structure, it is light-weight,
It is firm easy-to-use, it can be advantageously applied to field test, realize anti-corona effects.Further, since provided in an embodiment of the present invention
Lead uses rigid wire, therefore with good elasticity and retractility.Further, due to lead provided in an embodiment of the present invention
Helix tube radius can be adjusted according to high-potting voltage, therefore plurality of specifications can be expanded.
Another embodiment of the present invention provides a kind of production method of the anticorona lead of the high pressure as described in above example,
Referring to Fig. 5, this method comprises the following steps：
Step 101：According to high-voltage test current and preset operating time, the cross-sectional sizes of rigid wire are determined.
Step 102：The radius of helical tubular structure is determined according to high-potting voltage and bloom field strength.
Step 103：Rigid wire length is determined according to the wire length of the radius of helical tubular structure and needs.
Step 104：The rigid wire length determined according to step 103 intercepts the rigid wire of corresponding length and is coiled into helical
Tubulose keeps its fixed-type.
In this step, spiral tube spacing should carry out electromagnetic field simulation, and when determining maximum tension length, surface electric field intensity is less than
Bloom field strength is multiplied by safety coefficient.It is designed when it is implemented, solenoid can refer to spring wire.
Step 105：Equal crimp head is installed at the lead both ends of helically tubular structure.
In a kind of optional embodiment, the step 105 specifically includes：
It is mounted directly at the lead both ends of helically tubular structure and presses element；Or,
It is mounted directly connecting terminal at the lead both ends of helically tubular structure, using pressure measure or utilizes the high pressure
The uniform measure of anticorona lead connected device carries out pressure to the connecting terminal of installation and handles, and obtains equal crimp head.
As shown from the above technical solution, the high pressure that is obtained using production method provided in an embodiment of the present invention is anticorona to draw
Line, it is simple in structure, it is light-weight, it is firm easy-to-use, it can be advantageously applied to field test, realize anti-corona effects.Further, since
The embodiment of the present invention makes lead using rigid wire, so that lead has good elasticity and retractility.Further, by
It can be adjusted according to high-potting voltage in the helix tube radius of the embodiment of the present invention, therefore plurality of specifications can be expanded.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.The instructions such as term "upper", "lower"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, does not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.Unless otherwise clearly defined and limited, term " installation ", " connected ", " company
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connects, and can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
In the specification of the present invention, numerous specific details are set forth.Although it is understood that the embodiment of the present invention can
To put into practice without these specific details.In some instances, well known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this description.Similarly, it should be understood that disclose in order to simplify the present invention and helps to understand respectively
One or more of a inventive aspect, in the above description of the exemplary embodiment of the present invention, each spy of the invention
Sign is grouped together into sometimes in single embodiment, figure or descriptions thereof.
Finally it should be noted that：Above example is only used to illustrate the technical scheme of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or substitutions, the spirit and model of various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (7)
1. a kind of anticorona lead of high pressure, which is characterized in that it is anticorona for high-potting, including：Helically tubular structure
Lead and equal crimp head positioned at the lead both ends；
The conductor part of the lead uses rigid wire, the insulated part of the lead to use flexible insulating material；
Wherein, the radius of the helical tubular structure and high-potting voltage are proportional.
2. the anticorona lead of high pressure according to claim 1, which is characterized in that the rigid wire be good conductor conducting wire or
Compound wire.
3. the anticorona lead of high pressure according to claim 2, which is characterized in that the compound wire be copper-clad steel core wire,
Steel wire or aluminium alloy wire.
4. the anticorona lead of high pressure according to claim 1, which is characterized in that the electric field strength for crimping head surface
Less than default electric field intensity value.
5. the anticorona lead of high pressure according to claim 1, which is characterized in that the helical tubular structure is in maximum
Spiral tube spacing size should ensure that lead wire surface field strength when in maximum tension state is less than when tensional state
It has stage fright and is multiplied by default safety coefficient by force.
6. a kind of production method of the anticorona lead of the high pressure as described in any one of Claims 1 to 5, which is characterized in that including：
S1, according to high-voltage test current and preset operating time, determine the cross-sectional sizes of rigid wire；
S2, the radius that helical tubular structure is determined according to high-potting voltage and bloom field strength；
S3, rigid wire length is determined according to the radius of helical tubular structure and the wire length of needs；
S4, the rigid wire length determined according to step S3 intercept the rigid wire of corresponding length and are coiled into solenoidal structure, make it
It is fixed-type；
S5, equal crimp head is installed at the lead both ends of helically tubular structure.
7. according to the method described in claim 6, it is characterized in that, the S5 is specifically included：
It is mounted directly at the lead both ends of helically tubular structure and presses element；Or,
Connecting terminal is installed at the lead both ends of helically tubular structure, is drawn using pressure measure or using the high pressure is anticorona
The uniform measure of line connected device carries out pressure to the connecting terminal of installation and handles, and obtains equal crimp head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710062798.6A CN108346951B (en) | 2017-01-24 | 2017-01-24 | High-voltage anticorona lead and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710062798.6A CN108346951B (en) | 2017-01-24 | 2017-01-24 | High-voltage anticorona lead and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108346951A true CN108346951A (en) | 2018-07-31 |
| CN108346951B CN108346951B (en) | 2020-10-23 |
Family
ID=62963235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710062798.6A Active CN108346951B (en) | 2017-01-24 | 2017-01-24 | High-voltage anticorona lead and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108346951B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285501A (en) * | 2020-10-23 | 2021-01-29 | 广东电网有限责任公司广州供电局 | High-voltage lead shielding device, ranging system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012047748A (en) * | 2010-07-30 | 2012-03-08 | Nidec-Read Corp | Connection terminal and manufacturing method of connection terminal |
| CN103207292A (en) * | 2013-03-15 | 2013-07-17 | 中国电力科学研究院 | Ultra-high/extra-high voltage anti-corona voltage-sharing ball lead |
| CN203164229U (en) * | 2013-03-15 | 2013-08-28 | 中国电力科学研究院 | Ultrahigh/extra-high voltage anti-corona voltage-equalizing ball lead |
| CN203205704U (en) * | 2013-04-22 | 2013-09-18 | 安徽省电力科学研究院 | Anti-corona-discharge connecting device for high-voltage test pressurization |
| CN204407172U (en) * | 2015-02-15 | 2015-06-17 | 董亮星 | A kind of voltage transformer of anti-high-voltage impact |
-
2017
- 2017-01-24 CN CN201710062798.6A patent/CN108346951B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012047748A (en) * | 2010-07-30 | 2012-03-08 | Nidec-Read Corp | Connection terminal and manufacturing method of connection terminal |
| CN103207292A (en) * | 2013-03-15 | 2013-07-17 | 中国电力科学研究院 | Ultra-high/extra-high voltage anti-corona voltage-sharing ball lead |
| CN203164229U (en) * | 2013-03-15 | 2013-08-28 | 中国电力科学研究院 | Ultrahigh/extra-high voltage anti-corona voltage-equalizing ball lead |
| CN203205704U (en) * | 2013-04-22 | 2013-09-18 | 安徽省电力科学研究院 | Anti-corona-discharge connecting device for high-voltage test pressurization |
| CN204407172U (en) * | 2015-02-15 | 2015-06-17 | 董亮星 | A kind of voltage transformer of anti-high-voltage impact |
Non-Patent Citations (1)
| Title |
|---|
| 华中工学院高压电实验室、湖北省电力设计院、长江流域: "《华中工学院户外高压试验场及有关高压引线的一些问题》", 《华中工学院学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285501A (en) * | 2020-10-23 | 2021-01-29 | 广东电网有限责任公司广州供电局 | High-voltage lead shielding device, ranging system and method |
| CN112285501B (en) * | 2020-10-23 | 2024-03-01 | 广东电网有限责任公司广州供电局 | High-voltage lead shielding device, ranging system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108346951B (en) | 2020-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | 500-kV EHV bundle conductors' corona onset voltage calculation and analysis in corona cage at different altitudes | |
| CN103366872A (en) | Circular shielding insulating bus and machining method thereof | |
| CN108346951A (en) | A kind of anticorona lead of high pressure and production method | |
| CN202693622U (en) | Power transformer test connecting device | |
| CN107478972B (en) | Testing device and method for cable accessories | |
| Ueta et al. | Evaluation of breakdown characteristics of gas insulated switchgears for non-standard lightning impulse waveforms-breakdown characteristics under non-uniform electric field | |
| CN104101745A (en) | Linear impedance stabilization network | |
| CN108320870A (en) | A kind of support insulator | |
| CN205355729U (en) | Wall bushing with shielding structure | |
| CN205844458U (en) | A kind of high pressure equipment measurement of partial discharge air core coil sensor | |
| KR20200127421A (en) | Terminal device for testing a power cable | |
| CN104332258B (en) | The high-voltage wall bushing improved | |
| CN105514892B (en) | A kind of wall bushing with shielding construction | |
| CN204167022U (en) | A kind of high-voltage wall bushing | |
| CN101414495B (en) | Composite power cable | |
| CN106229065B (en) | Power line and electric equipment | |
| JP2022075941A (en) | Manufacturing method of electric wire with terminal and terminal included in electric wire with terminal | |
| CN107167717A (en) | A kind of local discharge signal blocking device | |
| CN103513070A (en) | Line impedance stabilization network | |
| CN215953769U (en) | Pressure resistance tester | |
| CN2682596Y (en) | Butt-terminal of electric wire | |
| CN105929313A (en) | Hollow coil sensor for high-voltage equipment partial discharge measurement | |
| CN202887866U (en) | High-voltage wire for power tests | |
| CN204538399U (en) | Portable polylinker Wire guide roller | |
| CN204167834U (en) | A kind of outdoor part of high-voltage wall bushing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |