CN106849038A - A kind of self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR - Google Patents
A kind of self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR Download PDFInfo
- Publication number
- CN106849038A CN106849038A CN201710121772.4A CN201710121772A CN106849038A CN 106849038 A CN106849038 A CN 106849038A CN 201710121772 A CN201710121772 A CN 201710121772A CN 106849038 A CN106849038 A CN 106849038A
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- China
- Prior art keywords
- current
- limiting
- large capacity
- limiting reactor
- fast switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/021—Current limitation using saturable reactors
-
- 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
- H02H3/08—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 current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention relates to a kind of self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR, including current-limiting reactor L, Fast Switch with Large Capacity FSR, high-speed eddy switch K0, electric discharge damper RL；Electric discharge damper RL, current-limiting reactor L, high energy type fuse FU three are sequentially connected in series, and Fast Switch with Large Capacity FSR in parallel, high-speed eddy switch K0 respectively on the two ends after series connection；One end of electric discharge damper RL is connected with the end of incoming cables AL1 of device, and the other end is connected with the end of incoming cables of current-limiting reactor L；One end of high energy type fuse FU is connected with the leading-out terminal of current-limiting reactor L, and the other end is connected with the leading-out terminal AL2 of device.It is simple structure of the present invention, safe and reliable, can be in 0.15ms input current-limiting reactors L, by current-limiting reactor L can effective limiting short-circuit current intensity, greatly reduce impact of the short circuit current to electrical equipment, while user's terminal voltage is ensured, can realize normally running zero loss of current-limiting reactor again.
Description
Technical field
It is especially a kind of to be based on Fast Switch with Large Capacity FSR the present invention relates to power system current-limiting reactor technical field
Self-shield current-limiting apparatus.
Background technology
With expanding economy, the sharp increase of electric load, the increase of net capacity, constantly the short circuit current of increase is to electricity
The impact of Force system electrical equipment is also increasing；Meanwhile, the connecting-disconnecting function of existing breaker be difficult to satisfaction cut-off it is huge
Short circuit current.Therefore to solve this great difficult problem, the mode that current-limiting reactor is concatenated in loop is widely used in power train
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 in power system electricity
The impact of gas equipment, and maintain busbar voltage, it is to avoid the further expansion of short trouble.But series connection current-limiting reactor has very
Many weak points, first, produce huge reactive loss also to cause very big economy to user in current-limiting reactor series loop
Burden；Secondly, when the reactance value of current-limiting reactor is chosen, often exist after meeting the requirement of limiting short-circuit current, it is specified
The contradiction of user terminal brownout under electric current.During the long distance delivery of power system transmission and distribution network, transmission line of electricity can also be produced
Raw induction reactance, has substantially equally formd the reactor in a kind of stealthy, potential concatenation user load loop, equally causes to use
Family terminal voltage reduction, while there is larger reactive loss again.
The content of the invention
It is an object of the invention to provide a kind of safe and reliable, simple structure and with self-protection function, can effectively limit
The intensity of short circuit current, greatly reduces short circuit current to a kind of based on Fast Switch with Large Capacity FSR's of the impact of electrical equipment
Self-shield current-limiting apparatus.
To achieve the above object, present invention employs following technical scheme：It is a kind of based on Fast Switch with Large Capacity FSR from
Protection current-limiting apparatus, including current-limiting reactor L, the high-capacity and high-speed for quick input current-limiting reactor L after system short-circuit are opened
Close FSR, the high-speed eddy switch K0 for short trouble excision backed off after random current-limiting reactor L, for current-limiting reactor L short circuits after
Limit the electric discharge damper RL of dash current, and the high energy type fuse FU for preventing current-limiting reactor L from being damaged by excessively stream；
The electric discharge damper RL, current-limiting reactor L, high energy type fuse FU three are sequentially connected in series, parallel connection respectively on the two ends after series connection
Fast Switch with Large Capacity FSR, high-speed eddy switch K0；One end of the electric discharge damper RL is connected with the end of incoming cables AL1 of device,
The other end is connected with the end of incoming cables of current-limiting reactor L；One end of the high energy type fuse FU and the leading-out terminal phase of current-limiting reactor L
Even, the other end is connected with the leading-out terminal AL2 of device.
The electric discharge damper RL is composed in parallel by inductance L and resistance R.
The high-speed eddy switch K0 is vacuum interrupter arc extinguishing breaker.
The Fast Switch with Large Capacity FSR, high-speed eddy switch K0 are controlled by the controller in power distribution cabinet
It cut-offs.
The current-limiting reactor L, Fast Switch with Large Capacity FSR, high-speed eddy switch K0, electric discharge damper RL, high energy type
Fuse FU is installed in power distribution cabinet.
As shown from the above technical solution, simple structure of the present invention, safe and reliable, with self-protection function, can be in 0.15ms
Input current-limiting reactor L, by current-limiting reactor L can effective limiting short-circuit current intensity, greatly reduce short circuit current to electricity
The impact of gas equipment, while user's terminal voltage is ensured, can realize normally running zero loss of current-limiting reactor again.Together
When, high energy type fuse FU is prevented from current-limiting reactor L and is damaged because of excessively stream, improves the reliability of equipment.
Brief description of the drawings
Fig. 1 is electrical schematic diagram of the invention.
Specific embodiment
As shown in figure 1, a kind of self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR, including current-limiting reactor L,
For quickly putting into the Fast Switch with Large Capacity FSR of current-limiting reactor L after system short-circuit, for short trouble excision retrogressing rising limit
The high-speed eddy switch K0 of stream reactor L, the electric discharge damper RL for limiting dash current after current-limiting reactor L short circuits, with
And the high energy type fuse FU for preventing current-limiting reactor L from being damaged by excessively stream；The electric discharge damper RL, current-limiting reactor L,
High energy type fuse FU three be sequentially connected in series, and Fast Switch with Large Capacity FSR in parallel, high-speed eddy are switched respectively on the two ends after series connection
K0；One end of the electric discharge damper RL is connected with the end of incoming cables AL1 of device, the end of incoming cables phase of the other end and current-limiting reactor L
Even；One end of the high energy type fuse FU is connected with the leading-out terminal of current-limiting reactor L, the leading-out terminal AL2 phases of the other end and device
Even.
As shown in figure 1, the electric discharge damper RL is composed in parallel by inductance L and resistance R.Electric discharge damper RL is used to limit
The discharge impact electric current of current-limiting reactor L, prevents current-limiting reactor L from being damaged due to excessively stream, makes current-limiting reactor L both end voltages
A relatively low level can be limited in, the frequency of the input current limliting of current-limiting reactor L is substantially increased.
As shown in figure 1, the high-speed eddy switch K0 is vacuum interrupter arc extinguishing breaker.When hair in circuit on power system
Raw short trouble, after short trouble excision, controller controls high-speed eddy to switch K0 to close a floodgate immediately, so as to by current-limiting reactor L
Short circuit, realizes zero loss of normal operation current-limiting reactor L.
As shown in figure 1, the Fast Switch with Large Capacity FSR, high-speed eddy switch K0 by power distribution cabinet
Controller controls it to cut-off.The current-limiting reactor L, Fast Switch with Large Capacity FSR, high-speed eddy switch K0, electric discharge damper
RL, high energy type fuse FU are installed in power distribution cabinet.Fast Switch with Large Capacity FSR, for power system be short-circuited failure when,
Current-limiting reactor L is quickly connected in series in loop, by current-limiting reactor L can effective limiting short-circuit current intensity, subtract significantly
Impact of the small short-circuit current to electrical equipment.High energy type fuse FU is used to control the making time of current-limiting reactor L, when current limliting electricity
When anti-device L exceedes effective current limliting time, high energy type fuse FU disconnects immediately, prevents current-limiting reactor L from being sent out because of long-time input
It is raw to damage.
Operation principle of the present invention is as follows：During the failure that is short-circuited, current-limiting reactor L can be put within 0.15ms, led to
The intensity of the effective limiting short-circuit currents of current-limiting reactor L is crossed, danger of the short trouble to electrical equipment in power system is greatly reduced
Evil, while current-limiting reactor L can quickly be exited after short trouble excision, current limliting can be effectively prevented by high energy type fuse FU
Reactor L is damaged because long-time puts into；With self-protection function, compared with directly series connection current-limiting reactor L, can be effective
Solve the problems, such as that series connection current-limiting reactor L puts into the actual motion of a large amount of reactive loss of consumption and user terminal brownout for a long time.This
Invention has the advantages that simple structure, safe and reliable, action is fast, improve transformer operating efficiency and reduce running wastage.
Claims (5)
1. a kind of self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR, it is characterised in that：Including current-limiting reactor L, use
Backed off after random current limliting is cut off in the Fast Switch with Large Capacity FSR of quick input current-limiting reactor L after system short-circuit, for short trouble
The high-speed eddy switch K0 of reactor L, the electric discharge damper RL for limiting dash current after current-limiting reactor L short circuits, and
For the high energy type fuse FU for preventing current-limiting reactor L from being damaged by excessively stream；The electric discharge damper RL, current-limiting reactor L, height
Energy type fuse FU three is sequentially connected in series, and Fast Switch with Large Capacity FSR in parallel, high-speed eddy are switched respectively on the two ends after series connection
K0；One end of the electric discharge damper RL is connected with the end of incoming cables AL1 of device, the end of incoming cables phase of the other end and current-limiting reactor L
Even；One end of the high energy type fuse FU is connected with the leading-out terminal of current-limiting reactor L, the leading-out terminal AL2 phases of the other end and device
Even.
2. self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR according to claim 1, it is characterised in that：Institute
Electric discharge damper RL is stated to be composed in parallel by inductance L and resistance R.
3. self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR according to claim 1, it is characterised in that：Institute
It is vacuum interrupter arc extinguishing breaker to state high-speed eddy switch K0.
4. self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR according to claim 1, it is characterised in that：Institute
State Fast Switch with Large Capacity FSR, high-speed eddy switch K0 controls it to cut-off by the controller in power distribution cabinet.
5. self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR according to claim 1, it is characterised in that：Institute
Current-limiting reactor L, Fast Switch with Large Capacity FSR, high-speed eddy switch K0, electric discharge damper RL, high energy type fuse FU is stated to pacify
In power distribution cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710121772.4A CN106849038A (en) | 2017-03-02 | 2017-03-02 | A kind of self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710121772.4A CN106849038A (en) | 2017-03-02 | 2017-03-02 | A kind of self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR |
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| Publication Number | Publication Date |
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| CN106849038A true CN106849038A (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710121772.4A Pending CN106849038A (en) | 2017-03-02 | 2017-03-02 | A kind of self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023336A (en) * | 2017-12-18 | 2018-05-11 | 安徽伊格瑞德电气设备有限公司 | A kind of holding meanss based on explosive bridge FSR busbar residual voltages |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916411A (en) * | 2011-07-06 | 2013-02-06 | 立德电子股份有限公司 | Surge current suppression circuit |
| CN203883458U (en) * | 2014-01-23 | 2014-10-15 | 浙江宝顺电气有限公司 | Detachable lightning protection module applicable to residual current operated circuit breaker |
| CN105743069A (en) * | 2016-04-20 | 2016-07-06 | 安徽尚途电力保护设备有限公司 | Series resonance zero-loss current limiting device |
| CN205791500U (en) * | 2016-05-12 | 2016-12-07 | 安徽尚途电力保护设备有限公司 | A kind of high capacity and high speed switchgears |
| CN205945069U (en) * | 2016-06-24 | 2017-02-08 | 安徽尚途电力保护设备有限公司 | High voltage electric network cascade compensation device |
| CN206533126U (en) * | 2017-03-02 | 2017-09-29 | 安徽伊格瑞德电气设备有限公司 | A kind of self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR |
-
2017
- 2017-03-02 CN CN201710121772.4A patent/CN106849038A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916411A (en) * | 2011-07-06 | 2013-02-06 | 立德电子股份有限公司 | Surge current suppression circuit |
| CN203883458U (en) * | 2014-01-23 | 2014-10-15 | 浙江宝顺电气有限公司 | Detachable lightning protection module applicable to residual current operated circuit breaker |
| CN105743069A (en) * | 2016-04-20 | 2016-07-06 | 安徽尚途电力保护设备有限公司 | Series resonance zero-loss current limiting device |
| CN205791500U (en) * | 2016-05-12 | 2016-12-07 | 安徽尚途电力保护设备有限公司 | A kind of high capacity and high speed switchgears |
| CN205945069U (en) * | 2016-06-24 | 2017-02-08 | 安徽尚途电力保护设备有限公司 | High voltage electric network cascade compensation device |
| CN206533126U (en) * | 2017-03-02 | 2017-09-29 | 安徽伊格瑞德电气设备有限公司 | A kind of self-shield current-limiting apparatus based on Fast Switch with Large Capacity FSR |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023336A (en) * | 2017-12-18 | 2018-05-11 | 安徽伊格瑞德电气设备有限公司 | A kind of holding meanss based on explosive bridge FSR busbar residual voltages |
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Application publication date: 20170613 |
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