CN207624472U - A kind of Novel lightning arrester - Google Patents
A kind of Novel lightning arrester Download PDFInfo
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- CN207624472U CN207624472U CN201721446764.9U CN201721446764U CN207624472U CN 207624472 U CN207624472 U CN 207624472U CN 201721446764 U CN201721446764 U CN 201721446764U CN 207624472 U CN207624472 U CN 207624472U
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- arrester
- neutral bus
- branching port
- busbar
- load
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Abstract
A kind of Novel lightning arrester acts on current conversion station busbar, including load-bearing disk, neutral bus arrester, branching port；The neutral bus arrester is no less than 2 and is uniformly circumferentially arranged on load-bearing disk, busbar lead is accessed in the current conversion station busbar, the busbar lead is connect with branching port, and the branching port draws a plurality of arrester lead and is connected respectively neutral bus arrester.Advantage is effectively to absorb the excessive energy generated when generation switching overvoltage when breaking down, and uniform absorption, keeps equipment operation more safe and reliable.Simple in structure, improvement cost is low, is suitable for large-scale promotion and application.
Description
Technical field
The utility model is related to electrical equipment technical field, specially a kind of Novel lightning arrester.
Background technology
Metal oxide arrester can protect electrical equipment not to be damaged when electric power system fault generates overvoltage, be
When system generates Lightning Over-voltage and switching overvoltage, if being fitted without arrester, power equipment and circuit will be caused very big
Damage.Metal oxide arrester can guarantee the safe and stable operation of system.
Direct current arrester is mostly metal oxide arrester, and advantage is apparent, nonlinear characteristic, arc extinguishing ability, through-flow
Capacity etc. all has the advantage of itself.And neutral bus arrester is mostly installed in straight-flow system the neutrality in current conversion station
On busbar, neutral bus and its equipment are protected.In the bipolar symmetrical operation of straight-flow system, since circuit is symmetrical, in neutral bus
On almost without voltage, but the method for operation is monopole metal or when monopole the earth is run, there are one on converting plant neutral bus
Fixed continuous running voltage.
Since neutral bus arrester is mainly the energy for absorbing neutral bus overvoltage and generating, and existing design technology
It cannot be satisfied single arrester and absorb the energy that whole overvoltage generates, so domestic current conversion station mainly uses multiple neutrality
Busbar arrester is protected jointly, to ensure total energy absorption capability.Domestic DC converter station occurred multiple neutral bus and kept away
Thunder device failure, and the research after failure finds the energy that generates in failure process and it is total to be less than all neutral bus arresters
Energy absorption polar curve.The average energy on each neutral bus arrester of gross energy generated is less than the energy of single arrester
Measure absorption limit.The study found that when overvoltage generates, due to the influence of conducting wire between arrester, the energy between arrester
It is not uniformly distributed, leads to the arrester damage more than absorption energy.
Existing neutral bus arrester arrangement is mostly that two rows are arranged in juxtaposition, and does not consider the influence of the factors such as conducting wire,
It generally causes the energy absorbed close to the arrester of busbar and is more than the energy that the arrester far from busbar absorbs, this is unable to fully
The effect of the absorption energy of arrester is played, and be easy to cause the damage of arrester.
Utility model content
The utility model is directed to the deficiencies in the prior art, for lightning-arrest for multiple neutral buses in the prior art
Device does not consider that conducting wire factor is uniformly distributed energy the present situation impacted when being arranged in parallel, and provides a kind of novel, safety,
Rational multiple neutral bus arresters are arranged in parallel mode.
The utility model is achieved through the following technical solutions：
A kind of Novel lightning arrester is installed on current conversion station neutral bus, including load-bearing disk, neutral bus arrester, separated time
Mouthful；The neutral bus arrester is no less than 2 and is uniformly circumferentially arranged on load-bearing disk, neutral in the current conversion station
Busbar accesses busbar lead, and the busbar lead is connect with branching port, and the branching port draws a plurality of arrester lead point
It is not correspondingly connected with neutral bus arrester.
As the improvement of said program, the distance of the branching port to each neutral bus arrester is equal, described
Branching port is located at the center of circle for the circumference that multiple neutral bus arresters are formed.
As the improvement of said program, the load-bearing disk is equipped with supported grounding away from the side of neutral bus arrester
Column, each neutral bus arrester correspond to a supported grounding column, and the supported grounding column is electrically connected with neutral bus arrester
Connect and be circumferentially distributed on the side of load-bearing disk.
Discharge counter and current sensor are equipped with as the improvement of said program, in the supported grounding column to detect
The working condition and the investigation after failure of arrester.
The utility model has the advantages that：Effectively absorb the mistake generated when generation switching overvoltage when breaking down
More energy, and uniform absorption keep equipment operation more safe and reliable.Simple in structure, improvement cost is low, suitable for large-scale promotion
Using.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the Novel lightning arrester of the utility model.
Fig. 2 is the overlooking structure diagram of the Novel lightning arrester of the utility model.
Reference sign：Current conversion station neutral bus 1, load-bearing disk 2, neutral bus arrester 3, branching port 4, bus leading
Line 5, arrester lead 6, supported grounding column 7.
Specific implementation mode
As shown in Figure 1 and Figure 2, a kind of Novel lightning arrester acts on current conversion station neutral bus 1, including load-bearing disk 2, neutrality
Busbar arrester 3, branching port 4；The neutral bus arrester 3 has 9 and is uniformly circumferentially arranged on load-bearing disk 2,
The current conversion station busbar 1 accesses busbar lead 5, and the busbar lead 5 is connect with branching port 4, and the branching port 4 is drawn
A plurality of arrester lead 6 is connected respectively neutral bus arrester 3.The branching port 4 arrives each neutral bus arrester 3
Distance it is equal, the branching port 4 is located at the center of circle for the circumference that multiple neutral bus arresters 3 are formed.Described
Load-bearing disk 2 is equipped with supported grounding column 7 away from the side of neutral bus arrester 3, and each neutral bus arrester 3 corresponds to one
Supported grounding column 7, the supported grounding column 7 are electrically connected with neutral bus arrester 3 and are circumferentially distributed on the one of load-bearing disk 2
Side.Discharge counter (not shown) and current sensor (not shown) are equipped in the supported grounding column 7 to detect arrester
Working condition and failure after investigation.
Above-listed detailed description is illustrating for the utility model possible embodiments, which is not to limit
The scope of the claims of the utility model, all equivalence enforcements or change without departing from carried out by the utility model are intended to be limited solely by this case
In the scope of the claims.
Claims (4)
1. a kind of Novel lightning arrester is installed on current conversion station neutral bus, which is characterized in that kept away including load-bearing disk, neutral bus
Thunder device, branching port；The neutral bus arrester is no less than 2 and is uniformly circumferentially arranged on load-bearing disk, described
Current conversion station neutral bus accesses busbar lead, and the busbar lead is connect with branching port, and the branching port draws a plurality of keep away
Thunder device lead is connected respectively neutral bus arrester.
2. a kind of Novel lightning arrester according to claim 1, which is characterized in that the branching port to each neutral bus
The distance of arrester is equal, and the branching port is located at the center of circle for the circumference that multiple neutral bus arresters are formed.
3. a kind of Novel lightning arrester according to claim 1 or 2, which is characterized in that the load-bearing disk is away from neutrality
The side of busbar arrester is equipped with supported grounding column, and each neutral bus arrester corresponds to a supported grounding column, the branch
Support earthing rod is electrically connected with neutral bus arrester and the circumferential side for being distributed on load-bearing disk.
4. a kind of Novel lightning arrester according to claim 3, which is characterized in that be equipped with electric discharge in the supported grounding column
Investigation after the working condition and failure of counter and current sensor to detect arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721446764.9U CN207624472U (en) | 2017-11-02 | 2017-11-02 | A kind of Novel lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721446764.9U CN207624472U (en) | 2017-11-02 | 2017-11-02 | A kind of Novel lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207624472U true CN207624472U (en) | 2018-07-17 |
Family
ID=62827503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721446764.9U Active CN207624472U (en) | 2017-11-02 | 2017-11-02 | A kind of Novel lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207624472U (en) |
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2017
- 2017-11-02 CN CN201721446764.9U patent/CN207624472U/en active Active
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