CN111641188A - Novel line arrester - Google Patents
Novel line arrester Download PDFInfo
- Publication number
- CN111641188A CN111641188A CN202010551753.7A CN202010551753A CN111641188A CN 111641188 A CN111641188 A CN 111641188A CN 202010551753 A CN202010551753 A CN 202010551753A CN 111641188 A CN111641188 A CN 111641188A
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- CN
- China
- Prior art keywords
- energy storage
- coil
- leakage current
- piezoresistor
- current detection
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
Abstract
The invention discloses a novel line arrester, which comprises an arrester body, wherein the arrester body comprises a piezoresistor string, a first leakage current detection coil is arranged above the piezoresistor string, a second leakage current detection coil is arranged below the piezoresistor string, an electrode, an electromagnetic trip, an energy storage coil and a clipping capacitor are arranged on the arrester body, one end of the energy storage coil is electrically connected with the first leakage current detection coil and the second leakage current detection coil, the other end of the energy storage coil is electrically connected with the clipping capacitor, a coil connected in parallel is arranged on the electromagnetic trip, one end of the electromagnetic trip is electrically connected with the electrode, and the other end of the electromagnetic trip is provided with a grounding wire for connecting with the grounding wire. By adopting the structure, the invention has the function of leakage current detection, prevents the problem of invasion damage caused by thunder electromagnetic pulse, and ensures the normal work of the electromagnetic tripping mechanism.
Description
Technical Field
The invention relates to the field of lightning arresters, in particular to a novel line lightning arrester.
Background
The lightning arrester is an overvoltage protection electric appliance with excellent performance, is suitable for protecting power transmission and transformation lines and alternating current electric equipment, and the quality and the performance of the lightning arrester directly relate to the safety of the operation of a power grid.
When the lightning arrester in the prior art is used, the following defects exist:
1 arrester among the prior art does not possess the leakage current and detects the function, is damaged by the invasion that thunder and lightning electromagnetic pulse caused easily.
2 the lightning arrester is inconvenient to install and remove, which causes inconvenience for the installer.
Therefore, a new line arrester with excellent performance for solving the above problems becomes a problem to be researched in the whole society.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a novel line arrester, includes the arrester body, the arrester body includes the piezo-resistor cluster, the top of piezo-resistor cluster is provided with first leakage current detection coil, the below of piezo-resistor cluster is provided with second leakage current detection coil, be provided with electrode, electromagnetism release, energy storage coil and the electric capacity of clipping on the arrester body, energy storage coil's one end be used for with first leakage current detection coil, the second leak current between the detection coil electric connection, energy storage coil's the other end be used for and clip electric capacity between electric connection, be provided with parallelly connected coil on the electromagnetism release, the one end of electromagnetism release be used for with electrode electric connection, the other end of electromagnetism release is provided with the earth connection for connect the earth connection.
Furthermore, a temperature fuse is arranged in the piezoresistor string, so that the bottom electromagnetic coil release can be disconnected when the lightning arrester is over-temperature, and the automatic separation function of the lightning arrester before damage is realized.
Furthermore, the energy storage coils are provided with two groups, namely a first energy storage coil and a second energy storage coil, two ends of the clipping capacitor are electrically connected with the first energy storage coil and the second energy storage coil respectively, and the energy storage coils are arranged, so that when the leakage current of the arrester reaches 50uA and reaches the action set value of the electromagnetic energy storage ring, the energy storage ring triggers the coil tripper to act, and the arrester is automatically separated.
Furthermore, a low-pass flow fuse is arranged inside the electromagnetic release.
Further, the lightning arrester body is provided with a bolt.
Furthermore, the piezoresistor string is formed by connecting a plurality of resistors in series.
And furthermore, energy storage coils are also arranged on the lightning arrester, and the two groups of energy storage coils are arranged to realize energy matching with the bottom electromagnetic energy storage ring.
Furthermore, the umbrella skirt of the lightning arrester body is made of super-hydrophobic materials, so that the antifouling performance of the lightning arrester is improved.
Compared with the prior art, the invention has the advantages that: by adopting the structure, the invention solves the problems in the prior art and has the function of electric leakage detection; when the leakage current of the system exceeds a set value, the disconnector is automatically disconnected, so that the purpose of disconnecting the lightning arrester from the network is achieved. Because the energy storage coil adopts the conjugate structure, the thunder and lightning electromagnetic pulse generated when the lightning current passes through the arrester piezoresistor string has strong destructiveness, so the energy storage coil adopts the conjugate structure, the problem of invasion damage caused by the thunder and lightning electromagnetic pulse is prevented, and the normal work of the electromagnetic tripping mechanism is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a novel line arrester according to the present invention.
Fig. 2 is a schematic view of the internal structure of the novel lightning arrester of the invention.
As shown in the figure: 1. the lightning arrester comprises an arrester body, 2, a piezoresistor string, 3, a first leakage current detection coil, 4, a second leakage current detection coil, 5, an electrode, 6, an electromagnetic trip, 7, an energy storage coil, 8, a clipping capacitor, 9, a first energy storage coil, 10, a second energy storage coil, 11, a grounding wire, 12 and a bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present invention will be described in detail with reference to the accompanying drawings.
The invention provides a novel line arrester in specific implementation, which comprises an arrester body 1, wherein the arrester body 1 comprises a piezoresistor string 2, a first leakage current detection coil 3 is arranged above the piezoresistor string 2, a second leakage current detection coil 4 is arranged below the piezoresistor string 2, an electrode 5, an electromagnetic trip device 6, an energy storage coil 7 and a clipping capacitor 8 are arranged on the arrester body 1, one end of the energy storage coil 7 is used for being electrically connected with the first leakage current detection coil 3 and the second leakage current detection coil 4, the other end of the energy storage coil 7 is used for being electrically connected with the clipping capacitor 8, the electromagnetic trip device 6 is provided with a coil 11 which is connected in parallel, one end of the electromagnetic trip device 6 is used for being electrically connected with the electrode 5, and the other end of the electromagnetic trip device 6 is provided with a grounding wire 11, for connection to a ground line 11.
And a temperature fuse is arranged in the piezoresistor string 2. The energy storage coils 7 are provided with two groups, namely a first energy storage coil 9 and a second energy storage coil 10, and two ends of the clipping capacitor 8 are electrically connected with the first energy storage coil 9 and the second energy storage coil 10 respectively. The electromagnetic trip 6 is internally provided with a low-pass flow fuse. The lightning arrester body 1 is provided with a bolt 12. The piezoresistor string 2 is formed by connecting a plurality of resistors in series.
The specific embodiment of the invention is as follows: when the lightning arrester is used, the lightning arrester body 1 is mainly composed of the piezoresistor string 2, the piezoresistor has system leakage current due to the curve characteristic of the piezoresistor, the performance of the lightning arrester body 1 can be monitored through the leakage current, and the dynamic leakage current can be charged to the clipping capacitor 8 through the energy storage coil 7 to achieve the purpose of energy storage. When the leakage current of the system reaches 50uA, the action threshold set by the energy storage coil 7 is reached, so that a low-pass flow fuse arranged in the electromagnetic release 6 is fused, the electromagnetic balance of the energy storage coil 7 is cut off, the release is cut off, and the purpose that the lightning arrester is separated from the system is achieved.
As a further elaboration of the invention, the principle of the energy storage coil is as follows: when the lightning arrester body 1 is normally connected to a system, power frequency leakage current exists in the lightning arrester, the energy storage coil 7 generates induced current through the flowing current and stores energy, and when the current exceeds 50uA and exceeds the maximum current of the fuse set by the energy storage coil 7, the electromagnetic release 6 acts; in order to avoid the malfunction of the energy storage coil 7 caused by the lightning arrester passing lightning current, a clipping capacitor 8 is added on the design of the energy storage coil 7 to filter out lightning electromagnetic pulses.
As further elaboration of the invention, the umbrella skirt of the lightning arrester body is made of super-hydrophobic materials, so that the antifouling function of the lightning arrester is improved.
The shape and size of the invention can be adjusted according to the size of the using place, but the internal structure and principle are not changed.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A novel line arrester is characterized in that: the lightning arrester comprises a lightning arrester body (1), wherein the lightning arrester body (1) comprises a piezoresistor string (2), a first leakage current detection coil (3) is arranged above the piezoresistor string (2), a second leakage current detection coil (4) is arranged below the piezoresistor string (2), an electrode (5), an electromagnetic trip (6), an energy storage coil (7) and a clipping capacitor (8) are arranged on the lightning arrester body (1), one end of the energy storage coil (7) is used for being electrically connected with the first leakage current detection coil (3) and the second leakage current detection coil (4), the other end of the energy storage coil (7) is used for being electrically connected with the clipping capacitor (8), a coil (11) connected in parallel is arranged on the electromagnetic trip (6), and one end of the electromagnetic trip (6) is used for being electrically connected with the electrode (5), the other end of the electromagnetic release (6) is provided with a grounding wire (11) for connecting the grounding wire (11).
2. A novel line arrestor as defined in claim 1, wherein: the piezoresistor string (2) is internally provided with a temperature fuse.
3. A novel line arrestor as defined in claim 1, wherein: the energy storage coils (7) are provided with two groups, namely a first energy storage coil (9) and a second energy storage coil (10), and two ends of the clipping capacitor (8) are electrically connected with the first energy storage coil (9) and the second energy storage coil (10) respectively.
4. A novel line arrestor as defined in claim 1, wherein: and a low-pass flow fuse is arranged in the electromagnetic release (6).
5. A novel line arrestor as defined in claim 1, wherein: the lightning arrester is characterized in that a bolt (12) is arranged on the lightning arrester body (1).
6. A novel line arrestor as defined in claim 1, wherein: the piezoresistor string (2) is formed by connecting a plurality of resistors in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010551753.7A CN111641188A (en) | 2020-06-17 | 2020-06-17 | Novel line arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010551753.7A CN111641188A (en) | 2020-06-17 | 2020-06-17 | Novel line arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111641188A true CN111641188A (en) | 2020-09-08 |
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ID=72332626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010551753.7A Pending CN111641188A (en) | 2020-06-17 | 2020-06-17 | Novel line arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111641188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113130157A (en) * | 2021-03-05 | 2021-07-16 | 伍海民 | Novel transmission line arrester |
-
2020
- 2020-06-17 CN CN202010551753.7A patent/CN111641188A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113130157A (en) * | 2021-03-05 | 2021-07-16 | 伍海民 | Novel transmission line arrester |
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