CN111081436A - Distribution line insulator with lightning protection function - Google Patents
Distribution line insulator with lightning protection function Download PDFInfo
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- CN111081436A CN111081436A CN201911276712.5A CN201911276712A CN111081436A CN 111081436 A CN111081436 A CN 111081436A CN 201911276712 A CN201911276712 A CN 201911276712A CN 111081436 A CN111081436 A CN 111081436A
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- Prior art keywords
- distribution line
- lightning protection
- protection function
- lightning
- insulator
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- 239000012212 insulator Substances 0.000 title claims abstract description 29
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 8
- 208000025274 Lightning injury Diseases 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention discloses a distribution line insulator with a lightning protection function, relates to the technical field of power grid insulators, and solves the problem that an effective lightning protection measure is lacked because a lightning arrester position is not reserved on a distribution tower in a general distribution line. The peak value of a lightning current wave head flowing through the insulator body is reduced by using an inductance coil arranged in the insulator; then, a resistance valve plate arranged in the insulator is used for conducting the lightning current to the ground; the invention can be used as an insulator, can be used as an arrester for lightning protection, is suitable for a distribution line, and can be used for replacing the arrester under the condition that the arrester is difficult to install.
Description
Technical Field
The invention relates to the technical field of power grid insulators, in particular to a distribution line insulator with a lightning protection function.
Background
Most of power grid equipment is located outdoors, especially power transmission and distribution lines are almost exposed outdoors, and the equipment is easy to be damaged by lightning or induced overvoltage caused by lightning stroke to break down the insulation of the equipment. At present, the lightning arrester is generally used for protecting power grid equipment, namely the lightning arrester is provided with a nonlinear resistance valve plate by utilizing a body of the lightning arrester, and when lightning current comes, the resistance of the resistance valve plate group is rapidly reduced or approaches zero, so that the lightning current is led into the ground, and the equipment is protected from being damaged by lightning stroke.
However, the lightning stroke accident is prevented by installing an insulator and a lightning arrester on each phase of conductor of each base tower in the current distribution line. If the lightning arrester is not installed and used, the distribution line is easy to be struck by lightning and broken and has faults. In a general distribution line, the installation of the lightning arrester is not considered in the design and construction stage, so that the lightning arrester position cannot be reserved on a power distribution tower from the lightning protection angle, and the lightning arrester is difficult to install, operate and maintain in the later stage of lightning protection transformation. Meanwhile, the installation quantity of the equipment is increased, and larger workload is brought to construction and equipment operation and maintenance.
Disclosure of Invention
Aiming at the defects, the invention provides the distribution line insulator with the lightning protection function, and solves the problems that the lightning arrester position is not reserved on the distribution tower in the general distribution line, and the effective lightning protection measure is not available.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a distribution lines insulator that has lightning protection function concurrently, includes insulating sheath, upper end insulating sheath, plug and lower extreme base, be equipped with electrically conductive lead wire in the upper end insulating sheath, electrically conductive lead wire lower extreme electricity is connected with inductance coils, inductance coils passes through the spring and is connected with resistance valve block group electricity, resistance valve block group lower extreme and ground lead electricity are connected.
Further, the conductive lead penetrates out of the top of the upper end insulating sheath and is electrically connected with an external distribution line conducting wire.
Further, the ground lead is electrically connected to an external ground device.
Furthermore, a lightning stroke counter is arranged in the lower end base and comprises a lightning stroke counter circuit and a counter display, the lightning stroke counter circuit is connected with the grounding lead in series, and the counter display is arranged on the lower surface of the lower end base.
Furthermore, the core rod is arranged at the lower end of the insulating sheath, and the core rod is made of glass fiber; the core rod is connected with the resistance valve plate group through a grounding lead.
Furthermore, inductance coil, resistance valve block and plug are arranged in insulating sheath in proper order inside, and the inside space between them uses silica gel to fill sealed.
Furthermore, the resistance valve plate set is mainly prepared by blending zinc oxide materials.
Compared with the prior art, the invention has the advantages that,
the distribution line insulator with the lightning protection function can integrate the functions of the lightning arrester and the insulator, can be used as the insulator and can also be used as the lightning arrester for lightning protection; through utilizing inductance coils to reduce the ripples head peak value of lightning current to utilize the nonlinear characteristic of resistance valve piece group, switch on the lightning current under the overvoltage condition, thereby let the lightning current leak ground, protect the distribution lines, make it not only have the lightning protection function, also have electrical insulation performance, be applicable to the distribution lines, promote distribution lines construction and fortune dimension efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a lightning strike counter according to an embodiment of the invention;
the labels shown in the figures are; 1-upper end insulating sheath, 2-conducting lead, 3-inductance coil, 4-spring, 5-silica gel, 6-resistance valve plate group, 7-insulating sheath, 8-grounding lead, 9-core rod, 10-lower end base, 11-lightning stroke counter, 12-counter display, 13-counter display, DJ-relay, C-charging capacitor, VD-rectifier diode and R-shunt resistor.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a distribution lines insulator that has lightning protection function concurrently, as shown in figure 1, including insulating sheath 7, upper end insulating sheath 1, plug 9 and lower extreme base 10, be equipped with electrically conductive lead 2 in the insulating sheath 1 of upper end, electrically conductive lead 2 upper end is worn out upper end insulating sheath 1 top and is connected with outside distribution lines wire electricity, electrically conductive lead 2 lower extreme electricity is connected with inductance coil 3, inductance coil 3 is connected with 6 electricity of resistance valve block group through spring 4, resistance valve block group 6 mainly become by the zinc oxide material dispensing, 6 lower extremes of resistance valve block group are connected with ground lead 8 electricity, ground lead 8 is connected or direct ground connection with outside earthing device electricity. A core rod 9 is arranged in the lower end of the insulating sheath 7 and is made of glass fiber; the core rod 9 is connected with the resistance valve block group 6 through the grounding lead 8, the inductance coil 3, the resistance valve block 6 and the core rod 9 are sequentially arranged inside the insulating sheath 7, and the inner gap between the inductance coil 3, the resistance valve block 6 and the core rod 9 is filled and sealed by using silica gel 5. Be provided with thunderbolt counter 11 in the lower extreme base 10, thunderbolt counter 11 includes thunderbolt counter circuit 12 and counter display 13, and thunderbolt counter circuit 12 is established ties with ground lead 8, and counter display 13 sets up in lower extreme base 10 lower surface to can see the data that counter display 13 shows. The lightning strike counters in the market have various models, but the lightning strike counter with smaller volume is adopted in the invention, for example, ZY-LC model and other lightning strike counters can be adopted; as shown in fig. 2, the lightning strike counter circuit 12 of the lightning strike counter 11 of the present embodiment includes a relay DJ, a charging capacitor C, a rectifying diode VD, a shunt resistor R, and a counter display 13. By arranging the lightning strike counter 11 in the insulator, the number of times of lightning strikes on the insulator can be recorded, and real and effective data can be provided for relevant research in the future.
An inductance coil is arranged in the insulator and is connected or disconnected with a distribution line wire through an upper end conductive lead 2, the other end of the inductance coil 3 is connected with a resistance valve block group 6 through a spring 4, and therefore it is guaranteed that overvoltage current flows through the inductance coil 3 firstly and then flows through the resistance valve block group 6 and a lower end grounding lead 8, and lightning current is led into the ground. When the distribution circuit is struck by lightning, the lightning flows through the inductance coil 3 through the conductive lead 2, and the inductance coil 3 has the characteristic that the suppression current cannot change suddenly, so that the inductance coil 3 can reduce the wave head peak value of the lightning current flowing through the insulator body, the reduced lightning is led into the resistance valve plate group 6 through the spring 4, the resistance valve plate group 6 has the nonlinear characteristic, under the action of impulse voltage, the resistance value is very small, namely, the short circuit state is realized, and the lightning can smoothly flow through the grounding lead 8 and then is led into the ground to achieve the effect of protecting the distribution circuit.
The lightning arrester can be used as an insulator, can be used as a lightning arrester for lightning protection, is suitable for a power distribution line, can be used for replacing the lightning arrester under the condition that the lightning arrester is difficult to install, and solves the problems that the lightning arrester cannot be reserved on a power distribution pole tower from the lightning protection angle in the general power distribution line because the installation of the lightning arrester is not considered in the design and construction stages, the lightning arrester is difficult to install and operate and maintain in the later lightning protection transformation process, the installation quantity of equipment is increased, and the large workload is brought to the construction and the operation and maintenance of the equipment.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. The utility model provides a distribution lines insulator that has lightning protection function concurrently, includes insulating sheath (7), upper end insulating sheath (1), plug (9) and lower extreme base (10), its characterized in that: the high-voltage switch is characterized in that a conductive lead (2) is arranged in the upper-end insulating sheath (1), the lower end of the conductive lead (2) is electrically connected with an inductance coil (3), the inductance coil (3) is electrically connected with a resistance valve piece group (6) through a spring (4), and the lower end of the resistance valve piece group (6) is electrically connected with a grounding lead (8).
2. The distribution line insulator with the lightning protection function according to claim 1, wherein: and the conductive lead (2) penetrates out of the top of the upper end insulating sheath (1) and is electrically connected with an external distribution line lead.
3. The distribution line insulator with the lightning protection function according to claim 1, wherein: the grounding lead (8) is electrically connected with an external grounding device.
4. The distribution line insulator with the lightning protection function according to claim 1, wherein: be provided with thunderbolt counter (11) in lower extreme base (10), thunderbolt counter (11) are including thunderbolt counter circuit (12) and counter display (13), thunderbolt counter circuit (12) and ground lead (8) are established ties, counter display (11) set up in lower extreme base (10) lower surface.
5. The distribution line insulator with the lightning protection function according to claim 1, wherein: the core rod (9) is arranged at the lower end of the insulating sheath (7) and is made of glass fiber; the core rod (9) is connected with the resistance valve plate group (6) through a grounding lead (8).
6. The distribution line insulator with the lightning protection function according to claim 1 or 5, wherein: inductance coils (3), resistance valve block (6) and plug (9) place in insulating sheath (7) inside in proper order, and the inside space between them uses silica gel (5) to fill sealed.
7. The distribution line insulator with the lightning protection function according to claim 1, wherein: the resistance valve plate group (6) is mainly prepared by blending zinc oxide materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911276712.5A CN111081436A (en) | 2019-12-12 | 2019-12-12 | Distribution line insulator with lightning protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911276712.5A CN111081436A (en) | 2019-12-12 | 2019-12-12 | Distribution line insulator with lightning protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111081436A true CN111081436A (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911276712.5A Pending CN111081436A (en) | 2019-12-12 | 2019-12-12 | Distribution line insulator with lightning protection function |
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| CN (1) | CN111081436A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595005A (en) * | 2013-12-05 | 2014-02-19 | 国家电网公司 | Insulator type lightning arrester |
| CN203503405U (en) * | 2013-10-22 | 2014-03-26 | 国家电网公司 | Lightning arrester device |
| CN107301910A (en) * | 2017-05-17 | 2017-10-27 | 广西电网有限责任公司电力科学研究院 | A kind of arrester for cutting down lightning current steep wave |
| CN107564635A (en) * | 2017-08-26 | 2018-01-09 | 苏州灵亿易电子科技有限公司 | A kind of lower electric discharge part for clearance lightning-proof |
| CN107979054A (en) * | 2018-01-22 | 2018-05-01 | 张大堃 | Aerial high-voltage power transmission line lightning protection coil |
| CN211088006U (en) * | 2019-12-12 | 2020-07-24 | 广西电网有限责任公司电力科学研究院 | Insulator with lightning protection performance |
-
2019
- 2019-12-12 CN CN201911276712.5A patent/CN111081436A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203503405U (en) * | 2013-10-22 | 2014-03-26 | 国家电网公司 | Lightning arrester device |
| CN103595005A (en) * | 2013-12-05 | 2014-02-19 | 国家电网公司 | Insulator type lightning arrester |
| CN107301910A (en) * | 2017-05-17 | 2017-10-27 | 广西电网有限责任公司电力科学研究院 | A kind of arrester for cutting down lightning current steep wave |
| CN107564635A (en) * | 2017-08-26 | 2018-01-09 | 苏州灵亿易电子科技有限公司 | A kind of lower electric discharge part for clearance lightning-proof |
| CN107979054A (en) * | 2018-01-22 | 2018-05-01 | 张大堃 | Aerial high-voltage power transmission line lightning protection coil |
| CN211088006U (en) * | 2019-12-12 | 2020-07-24 | 广西电网有限责任公司电力科学研究院 | Insulator with lightning protection performance |
Non-Patent Citations (1)
| Title |
|---|
| 黄清社;徐奔;彭利强;邹一梅;邓文斌;李景禄;: "10kV架空绝缘导线防雷保护的措施研究", 高压电器, no. 12, 16 December 2010 (2010-12-16), pages 32 - 35 * |
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