CN206575146U - One kind blast loss current limiting system of bridge type zero - Google Patents
One kind blast loss current limiting system of bridge type zero Download PDFInfo
- Publication number
- CN206575146U CN206575146U CN201720101927.3U CN201720101927U CN206575146U CN 206575146 U CN206575146 U CN 206575146U CN 201720101927 U CN201720101927 U CN 201720101927U CN 206575146 U CN206575146 U CN 206575146U
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- leading
- incoming cables
- out terminal
- reactor
- damper
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Abstract
The utility model is related to a kind of blast bridge type zero loss current limiting system, including explosive bridge FSR, quick throw moves back control system, current-limiting reactor L and electric discharge damper RL, the end of incoming cables of the electric discharge reactor L is connected through isolation switch G1 with the end of incoming cables AL1 of power distribution cabinet, its leading-out terminal is connected with the end of incoming cables for the damper RL that discharges, electric discharge damper RL leading-out terminal is connected through isolation switch G2 with the leading-out terminal AL2 of power distribution cabinet, the end of incoming cables of the explosive bridge FSR is connected with the end of incoming cables for the reactor L that discharges, its leading-out terminal is connected with the leading-out terminal for the damper RL that discharges, control system is moved back in the quick throwing is used for short circuit electric discharge reactor L after short trouble.Discharge system described in the utility model is simple in construction, safe and reliable, the intensity of short circuit can be effectively limited by the reactor L that discharges, impact of the short circuit current flow to electrical equipment is greatly reduced, the stability, reliability and security of system is improved, while avoiding because interruption maintenance brings economic loss.
Description
Technical field
The utility model is related to electric power system power distribution equipment current limiting technique field, and in particular to one kind blast bridge type zero is lost
Current limiting system.
Background technology
With expanding economy, with the sharp increase of electric load, the increase of net capacity, the short circuit current flow constantly increased
Impact to power system electrical equipment is increasing；Meanwhile, the connecting-disconnecting function of existing breaker be difficult to satisfaction cut-off it is huge
Big short circuit current flow.Therefore to solve this great difficult problem, the mode that current-limiting reactor is concatenated in loop is widely used in electric power
In system electrical power trans mission/distribution system.Though current-limiting reactor series connection in the loop can limiting short-circuit current intensity, reduce short circuit current flow to electricity
The impact of electrical equipment in Force system, and maintain busbar voltage, it is to avoid the further expansion of short trouble.But current limliting of connecting electricity
Anti- device but has many weak points, first, and huge reactive loss is produced in current-limiting reactor series loop and is also caused to user
Very big financial burden；Secondly, when choosing the reactance value of current-limiting reactor, often exist and meet wanting for limiting short-circuit current
After asking, the contradiction of user terminal brownout under rated current.During the long distance delivery of power system transmission and distribution network, power transmission line
Road can also produce induction reactance, the reactor in a kind of stealthy, potential concatenation user load loop substantially equally formd, together
Sample causes the reduction of user terminal voltage, while there is larger reactive loss again.
Utility model content
The purpose of this utility model is that providing a kind of blast bridge type zero is lost current limiting system, reduces short circuit current flow to electric
The impact of equipment, while user's terminal voltage is ensured, can realize normal operation current-limiting reactor L zero loss again.
To achieve the above object, the utility model employs following technical scheme：
One kind blast loss current limiting system of bridge type zero, including explosive bridge FSR, quick throw move back control system, current-limiting reactor L
And electric discharge damper RL, the current-limiting reactor L end of incoming cables are connected through isolation switch G1 with the end of incoming cables AL1 of power distribution cabinet, its
Leading-out terminal is connected with the end of incoming cables for the damper RL that discharges, the damper RL of discharging leading-out terminal going out through isolation switch G2 and power distribution cabinet
Line end AL2 is connected, and the end of incoming cables of the explosive bridge FSR is connected with current-limiting reactor L end of incoming cables, and its leading-out terminal is damped with electric discharge
Device RL leading-out terminal is connected, and control system is moved back in the quick throwing is used for short circuit current-limiting reactor L after short trouble.
It is used as the further improvement of above-mentioned technical proposal：
The quick throwing moves back control system and switchs K0, the end of incoming cables of the high-speed eddy switch K0 and limit using high-speed eddy
The end of incoming cables for flowing reactor L is connected, and its leading-out terminal is connected with the leading-out terminal for the damper RL that discharges.
The electric discharge damper RL is in parallel and constituted by inductance L1 and resistance R.
Also include isolation switch G3, the end of incoming cables of the isolation switch G3 is connected with isolation switch G1 end of incoming cables, and it goes out
Line end is connected with isolation switch G2 leading-out terminal.
The high-speed eddy switch K0 controls it to cut-off by the controller in power distribution cabinet.
The high-speed eddy switch K0 is vacuum interrupter arc extinguishing breaker.
The explosive bridge FSR controls it to cut-off by the controller in power distribution cabinet.
As shown from the above technical solution, a kind of blast bridge type zero loss current limiting system described in the utility model, structure letter
It is single, safe and reliable, the intensity of short circuit can be effectively limited by current-limiting reactor L, short circuit current flow is greatly reduced to electrical equipment
Impact, improves the stability, reliability and security of system, while avoiding because interruption maintenance brings economic loss.
Brief description of the drawings
Fig. 1 is electrical schematic diagram of the present utility model.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings：
As shown in figure 1, the loss current limiting system of blast bridge type zero of the present embodiment, including explosive bridge FSR, quick throw move back control
System, current-limiting reactor L, isolation switch G3 and electric discharge damper RL, current-limiting reactor L end of incoming cables through isolation switch G1 with
The end of incoming cables AL1 of power distribution cabinet is connected, and its leading-out terminal is connected with the end of incoming cables for the damper RL that discharges, electric discharge damper RL outlet
End is connected through isolation switch G2 with the leading-out terminal AL2 of power distribution cabinet, explosive bridge FSR end of incoming cables and current-limiting reactor L end of incoming cables
It is connected, its leading-out terminal is connected with the leading-out terminal for the damper RL that discharges, quick throwing is moved back control system and limited for short circuit after short trouble
Flow reactor L.Isolation switch G3 end of incoming cables is connected with isolation switch G1 end of incoming cables, and its leading-out terminal goes out with isolation switch G2's
Line end is connected.
Current-limiting reactor L, when occurring short trouble for power system, is quickly connected in series to by explosive bridge FSR in 0.15ms
In loop, by current-limiting reactor L can effective limiting short-circuit current intensity, greatly reduce short circuit current flow and electrical equipment rushed
Hit.
The present embodiment, quick throw moves back control system using high-speed eddy switch K0, and high-speed eddy switchs K0 end of incoming cables
It is connected with current-limiting reactor L end of incoming cables, its leading-out terminal is connected with the leading-out terminal for the damper RL that discharges.When in circuit on power system
Generation short trouble, after short trouble excision, controller controls high-speed eddy to switch K0 to close a floodgate immediately, so that by current-limiting reactor
L short circuits, realize normal operation current-limiting reactor L zero loss.Electric discharge damper RL is in parallel and constituted by inductance L1 and resistance R.
Explosive bridge FSR and high-speed eddy switch K0 control it to cut-off by the controller in power distribution cabinet.High-speed eddy is switched
K0 is vacuum interrupter arc extinguishing breaker.
Isolation switch G1, G2, G3 are connected with the operating mechanism in power distribution cabinet, by manually controlling it to cut-off,
The isolation switch G1, G2, G3 realize component in interruption maintenance or more changing device, greatly improve the reliability and safety of power supply
Property, while avoiding because interruption maintenance brings economic loss.
Operation principle：
During normal operation, the current-limiting reactor L concatenated in load circuit will not be caused by explosive bridge FSR short circuits to user
Any financial burden, realizes the economic aim that current-limiting reactor L zero is lost.After current-limiting reactor L short circuits so that normal
Under powered operation state, no matter load and how to change, user's load terminal voltage is equal to busbar voltage.
When occurring short trouble, explosive bridge FSR is blown in 0.15ms immediately, current-limiting reactor L is quickly concatenated
The intensity of limiting short-circuit current in loop, by current-limiting reactor L can effective limiting short-circuit current intensity, greatly reduce short circuit
Impact of the electric current to electrical equipment.After short trouble is released, controller sends conjunction to high-speed eddy switch K0 immediately in system
Lock order, high-speed eddy switch K0 can within 2 milliseconds rapid short circuit current-limiting reactor L；After current-limiting reactor L is protected,
The damper RL that discharges discharges current-limiting reactor L immediately, and the electric energy in release current-limiting reactor L enables current-limiting reactor L quick
Put into short trouble next time.When the explosive bridge FSR of damage has not enough time to change, also K0 can be switched by high-speed eddy
Separating brake, makes current-limiting reactor L quickly concatenate the intensity of limiting short-circuit current in loop.Isolation switch realizes service without power-off,
Reduce the power failure range of maintenance repair and trouble hunting, the reliability and security of power supply are greatly improved, while avoiding because stopping
Electric-examination, which is repaiied, brings economic loss.
Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality
New scope is defined, on the premise of the utility model design spirit is not departed from, and those of ordinary skill in the art are to this
Various modifications and improvement that the technical scheme of utility model is made, all should fall into the protection of the utility model claims determination
In the range of.
Claims (7)
1. one kind blast loss current limiting system of bridge type zero, it is characterised in that：Control system, limit are moved back including explosive bridge FSR, quick throw
Flow reactor L and electric discharge damper RL, the current-limiting reactor L end of incoming cables of the end of incoming cables through isolation switch G1 and power distribution cabinet
AL1 is connected, and its leading-out terminal is connected with electric discharge damper RL end of incoming cables, the damper RL of discharging leading-out terminal through isolation switch G2 and
The leading-out terminal AL2 of power distribution cabinet is connected, and the end of incoming cables of the explosive bridge FSR is connected with current-limiting reactor L end of incoming cables, its leading-out terminal
It is connected with the leading-out terminal for the damper RL that discharges, control system is moved back in the quick throwing is used for short circuit current-limiting reactor L after short trouble.
2. blast bridge type zero loss current limiting system according to claim 1, it is characterised in that：Control system is moved back in the quick throwing
System switchs K0 using high-speed eddy, and the end of incoming cables of the high-speed eddy switch K0 is connected with current-limiting reactor L end of incoming cables, and it goes out
Line end is connected with the leading-out terminal for the damper RL that discharges.
3. blast bridge type zero loss current limiting system according to claim 1, it is characterised in that：The electric discharge damper RL by
Inductance L1 and resistance R are in parallel composition.
4. blast bridge type zero loss current limiting system according to claim 1, it is characterised in that：Also include isolation switch G3,
The end of incoming cables of the isolation switch G3 is connected with isolation switch G1 end of incoming cables, the leading-out terminal phase of its leading-out terminal and isolation switch G2
Even.
5. blast bridge type zero loss current limiting system according to claim 2, it is characterised in that：The high-speed eddy switchs K0
It is controlled to cut-off by the controller in power distribution cabinet.
6. blast bridge type zero loss current limiting system according to claim 2, it is characterised in that：The high-speed eddy switchs K0
For vacuum interrupter arc extinguishing breaker.
7. blast bridge type zero loss current limiting system according to claim 1, it is characterised in that：The explosive bridge FSR passes through
Controller in power distribution cabinet controls it to cut-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101927.3U CN206575146U (en) | 2017-01-26 | 2017-01-26 | One kind blast loss current limiting system of bridge type zero |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101927.3U CN206575146U (en) | 2017-01-26 | 2017-01-26 | One kind blast loss current limiting system of bridge type zero |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206575146U true CN206575146U (en) | 2017-10-20 |
Family
ID=60061283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720101927.3U Expired - Fee Related CN206575146U (en) | 2017-01-26 | 2017-01-26 | One kind blast loss current limiting system of bridge type zero |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206575146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069684A (en) * | 2017-01-26 | 2017-08-18 | 安徽徽电科技股份有限公司 | One kind blast loss current limiting system of bridge type zero |
-
2017
- 2017-01-26 CN CN201720101927.3U patent/CN206575146U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069684A (en) * | 2017-01-26 | 2017-08-18 | 安徽徽电科技股份有限公司 | One kind blast loss current limiting system of bridge type zero |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 Termination date: 20220126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |