CN206471817U - A kind of FSR buses residual voltage keeps system - Google Patents
A kind of FSR buses residual voltage keeps system Download PDFInfo
- Publication number
- CN206471817U CN206471817U CN201720101923.5U CN201720101923U CN206471817U CN 206471817 U CN206471817 U CN 206471817U CN 201720101923 U CN201720101923 U CN 201720101923U CN 206471817 U CN206471817 U CN 206471817U
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- fsr
- reactor
- switch
- bus
- leading
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Abstract
The utility model is related to a kind of FSR buses residual voltage and keeps system, including explosive bridge FSR, discharge prevention system, the bus reactor L and high-speed eddy switch K1 connected with bus reactor L, the end of incoming cables of the high-speed eddy switch K1 is connected through isolation switch G1 with the end of incoming cables AL1 of power distribution cabinet, reactor L leading-out terminal is connected through isolation switch G2 with the leading-out terminal AL2 of power distribution cabinet, the explosive bridge FSR is parallel to reactor L two ends, for quick input bus reactor L after system short-circuit, the discharge prevention system is used to discharge its electric energy after protecting compensation capacitor group C short circuits, the end of incoming cables of the isolation switch G1 is connected through isolation switch G3 with isolation switch G2 leading-out terminal.The utility model protects reactor L switchings speed by breaker control mother will soon, and the timely and effective excision isolation short trouble of energy prevents the further expansion of short trouble scope, not decompression of the bus in feeder line branch, short-circuit failure is effectively ensured.
Description
Technical field
The utility model is related to electric power system power distribution equipment current limiting technique field, and in particular to a kind of FSR buses residual voltage is protected
Hold system.
Background technology
With expanding economy, the sharp increase of business electrical load, power network median generatrix institute band branch road is more and more, works as mother
Short circuit occurs for a certain bar branch road under line, and drop is serious suddenly for the busbar voltage being connected with the branch road, and the remaining voltage of bus is generally below
The 20% of rated voltage, only when the branch breaker cut-offs, has cut off short trouble, busbar voltage could be recovered.Busbar voltage
From dropping to suddenly, to recover this period be exactly time that breaker cut-offs short trouble, and about at 0.1 second or so, that is, microcomputer is comprehensive
Close the time of protection failure judgement（20ms-30ms）, add breaker intrinsic actuation time（40ms-80ms）, along with electric arc
Zero-crossing timing（16ms or so）.There is this period that is recessed in busbar voltage, and Enterprise Power System is referred to as " shaking electricity "." shaking electricity "
During generation, bus residual voltage is very low, makes some that the load running of short trouble interruption, such as frequency converter, motor, relay not occur
Device, magnetic valve etc..These loads to " shake electricity " significant reaction are referred to as sensitive loads, have been characterized in mechanical movement and have had
The presence of electric energy or magnetic energy energy-storage travelling wave tube.The motor used in enterprise mostly asynchronous machine, and the rotating excitation field of asynchronous machine
Keep coming from the reactive power support of power network, bus residual voltage is very low during certain branch, short-circuit, the asynchronous machine on other branch roads cannot
Reactive power support, and will also be to short dot output short circuit current, the short circuit time constant τ of asynchronous machine is general in below 30ms, " shakes
The time, the magnetic field for the asynchronous machine exponentially decayed was depleted close to 3 τ for electricity ", and voltage is extensive after short circuit trouble point excision
At the time of multiple, power network rebuilds the impact that magnetic field generates 5-7 times of rated current to asynchronous machine, causes protective relaying maloperation to make.
When usual bus residual voltage is below 50%, sensitive loads tolerable " shaking electricity " time is not more than 30ms.When short circuit occurs for foreign network
Failure, can be overall by area's Intranet（All loads）Or part important load is switched to certain in another foreign network, but area's Intranet
Short circuit, which occurs, for branch road integrally have switched, and can only partly switch.If important sensitive loads are artificially concentrated in area's Intranet
Originally few to a small number of branch roads or its circuitry number, part switching is can to solve area's Intranet short circuit to cause asking for important load stoppage in transit
Topic, necessary condition is that to have the suitable foreign network that can switch.If important sensitive loads branch road is many in area's Intranet, part
The cost of switching is just too big, if changeable foreign network condition does not possess, then to solve area's Intranet and shake electric problem, adopt
It is desirable scheme with bus residual voltage holding meanss.The bus residual voltage holding meanss that existing market is used all are by speed-sensitive switch
The female input for protecting reactor of control, when normally running, speed-sensitive switch short circuit mother protects reactor, when short trouble occurs for branch road,
Mother, is protected reactor and is concatenated into circuit by speed-sensitive switch separating brake, occurs to speed-sensitive switch separating brake to need 18ms from short trouble, short
Road failure is possible to be expanded to bus bar side, will cause larger range of Power System Shortcuts.
Utility model content
The purpose of this utility model is that providing a kind of FSR buses residual voltage keeps system, is effectively ensured bus in feeder line branch
Not decompression during the short trouble of road, realize short trouble excision stepmother protect reactor zero loss, improve power supply reliability and
Security, it is to avoid because of the component in interruption maintenance or replacing system bring economic loss.
To achieve the above object, the utility model employs following technical scheme：
A kind of FSR buses residual voltage keeps system, including explosive bridge FSR, discharge prevention system, bus reactor L and with mother
The high-speed eddy switch K1 of line reactor L series connection, the end of incoming cables of the high-speed eddy switch K1 is through isolation switch G1 and power distribution cabinet
End of incoming cables AL1 be connected, reactor L leading-out terminal is connected through isolation switch G2 with the leading-out terminal AL2 of power distribution cabinet, the explosive bridge
FSR is parallel to reactor L two ends, for quick input bus reactor L after system short-circuit, and the discharge prevention system is used for
Its electric energy is discharged after being protected to compensation capacitor group C short circuits, and the end of incoming cables of the isolation switch G1 is through isolation switch G3 with isolating
Disconnecting link G2 leading-out terminal is connected.
It is used as the further improvement of above-mentioned technical proposal：
The discharge prevention system includes current limliting damper RL and high-speed eddy switch K0, and the current limliting damper RL's enters
Line end is connected through high-speed eddy switch K0 with bus reactor L end of incoming cables, current limliting damper RL leading-out terminal and bus reactance
Device L leading-out terminal is connected.
The explosive bridge FSR controls its quick-speed turning on-off by the fast acting control system being installed in Electric Appliance Cabinet.
The high-speed eddy switch K1 is vortex driving, vacuum interrupter arc extinguishing breaker.
The high-speed eddy switch K0 is vortex driving, vacuum interrupter arc extinguishing breaker.
Described high-speed eddy switch KO, K1 control its quick-speed turning on-off by the fast acting control system being installed in Electric Appliance Cabinet.
As shown from the above technical solution, the utility model protects reactor L switchings speed by breaker control mother and wants fast, energy
Timely and effective excision isolation short trouble, prevents the further expansion of short trouble scope, bus is effectively ensured in feeder line branch road
Not decompression during short trouble.With reliability is high, simple in construction, action is fast, save cable and transformer is invested and operation is damaged
The advantages of consumption.
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 FSR buses residual voltage of the present embodiment keeps system, including explosive bridge FSR, discharge prevention system, mother
The line reactor L and high-speed eddy switch K1 connected with bus reactor L, high-speed eddy switch K1 end of incoming cables is through isolation switch
G1 is connected with the end of incoming cables AL1 of power distribution cabinet, and reactor L leading-out terminal is connected through isolation switch G2 with the leading-out terminal AL2 of power distribution cabinet,
Explosive bridge FSR is parallel to reactor L two ends, for quick input bus reactor L after system short-circuit, and discharge prevention system is used
Its electric energy is discharged after being protected to compensation capacitor group C short circuits, isolation switch G1 end of incoming cables is through isolation switch G3 and isolation knife
Lock G2 leading-out terminal is connected.The component that the isolation switch G1, G2, G3 are used in service without power-off or replacing system, is carried significantly
The reliability and security of height power supply, economic damage is brought while avoiding because of the component in interruption maintenance or replacing system
Lose.
Explosive bridge FSR controls its quick-speed turning on-off by the fast acting control system being installed in Electric Appliance Cabinet, for bus feedback
When short trouble occurs for any branch road under line, explosive bridge FSR can be quickly connected in series in loop in 2ms bus reactors L, pass through mother
The size that the short-circuit current of this feeder line is restricted to the rated current of this feeder line by reactor L is protected, is greatly reduced short
Road current strength, can make branch breaker quickly cut off the short trouble of this branch road.
The present embodiment, discharge prevention system is made up of current limliting damper RL and high-speed eddy switch K0, current limliting damper
RL end of incoming cables is connected through high-speed eddy switch K0 with bus reactor L end of incoming cables, current limliting damper RL leading-out terminal and mother
Line reactor L leading-out terminal is connected.Current limliting damper RL is used for the electromagnetic energy that quick release mother is protected in reactor L, makes mother
Current-limiting protection next time can quickly be carried out by protecting reactor L.High-speed eddy switch K0 is used for short trouble and cuts off backed off after random bus
Reactor L.
High-speed eddy switch K0, K1 is vortex driving, vacuum interrupter arc extinguishing breaker, the high-speed eddy switch KO, K1
Its quick-speed turning on-off is controlled by the fast acting control system being installed in Electric Appliance Cabinet, the fast acting control system by power distribution cabinet controller
And control system is constituted.
Operation principle：
When short trouble occurs for any branch road under bus feeder line, when explosive bridge FSR can protect reactor L inputs in 2ms mothers,
The size that the short-circuit current of this feeder line is restricted to the rated current of this feeder line by reactor L is protected by female, branch road breaks
Road device can effectively cut off the short trouble of the branch road；When the branch breaker is because breaking down, it is impossible to quickly cut off this branch road
Short trouble when, fast acting control system control immediately high-speed eddy switch K1 separating brakes, whole piece branch road is isolated, prevents short
The further expansion of road failure.After short trouble is cut off by this branch breaker, fast acting control system immediately open by high-speed eddy
Close K0 to close immediately, mother is protected into reactor L carries out short circuit, prevent it is female protect reactor L put into for a long time a large amount of reactive loss of consumption and
The actual motion problem of user terminal brownout.
FSR buses residual voltage described in the utility model protects system, maintains bus residual voltage, protects other important loads not
Influenceed by a branch, short-circuit failure, with branch breaker repertoire, not only make the bus main transformer short circuit current flow
The infringement that impact is produced is substantially reduced, while making the transformer be protected well, to the breaker below its branch bar
Rupturing capacity is also accordingly substantially reduced.
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 (6)
1. a kind of FSR buses residual voltage keeps system, it is characterised in that：Including explosive bridge FSR, discharge prevention system, bus reactance
The device L and high-speed eddy switch K1 connected with bus reactor L, the end of incoming cables of the high-speed eddy switch K1 is through isolation switch G1
It is connected with the end of incoming cables AL1 of power distribution cabinet, reactor L leading-out terminal is connected through isolation switch G2 with the leading-out terminal AL2 of power distribution cabinet, institute
State explosive bridge FSR and be parallel to reactor L two ends, for quick input bus reactor L, the discharge prevention after system short-circuit
System is used to discharge its electric energy after protecting compensation capacitor group C short circuits, and the end of incoming cables of the isolation switch G1 is through isolation switch
G3 is connected with isolation switch G2 leading-out terminal.
2. FSR buses residual voltage according to claim 1 keeps system, it is characterised in that：The discharge prevention system includes
Current limliting damper RL and high-speed eddy switch K0, the current limliting damper RL end of incoming cables switch K0 and bus electricity through high-speed eddy
Anti- device L end of incoming cables is connected, and current limliting damper RL leading-out terminal is connected with bus reactor L leading-out terminal.
3. FSR buses residual voltage according to claim 1 keeps system, it is characterised in that：The explosive bridge FSR is by installing
Fast acting control system in Electric Appliance Cabinet controls its quick-speed turning on-off.
4. FSR buses residual voltage according to claim 1 keeps system, it is characterised in that：The high-speed eddy switchs K1
Vortex driving, vacuum interrupter arc extinguishing breaker.
5. FSR buses residual voltage according to claim 2 keeps system, it is characterised in that：The high-speed eddy switchs K0
Vortex driving, vacuum interrupter arc extinguishing breaker.
6. FSR buses residual voltage according to claim 2 keeps system, it is characterised in that：The high-speed eddy switchs KO, K1
Its quick-speed turning on-off is controlled by the fast acting control system being installed in Electric Appliance Cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101923.5U CN206471817U (en) | 2017-01-26 | 2017-01-26 | A kind of FSR buses residual voltage keeps system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101923.5U CN206471817U (en) | 2017-01-26 | 2017-01-26 | A kind of FSR buses residual voltage keeps system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206471817U true CN206471817U (en) | 2017-09-05 |
Family
ID=59703847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720101923.5U Expired - Fee Related CN206471817U (en) | 2017-01-26 | 2017-01-26 | A kind of FSR buses residual voltage keeps system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206471817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069685A (en) * | 2017-01-26 | 2017-08-18 | 安徽徽电科技股份有限公司 | A kind of FSR buses residual voltage keeps system |
-
2017
- 2017-01-26 CN CN201720101923.5U patent/CN206471817U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069685A (en) * | 2017-01-26 | 2017-08-18 | 安徽徽电科技股份有限公司 | A kind of FSR buses residual voltage keeps system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170905 Termination date: 20220126 |