CN205724858U - A kind of series resonance bus residual voltage holding means - Google Patents
A kind of series resonance bus residual voltage holding means Download PDFInfo
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- CN205724858U CN205724858U CN201620584521.0U CN201620584521U CN205724858U CN 205724858 U CN205724858 U CN 205724858U CN 201620584521 U CN201620584521 U CN 201620584521U CN 205724858 U CN205724858 U CN 205724858U
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- reactor
- speed eddy
- residual voltage
- holding means
- eddy switch
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Abstract
This utility model relates to a kind of series resonance bus residual voltage holding means, including electric discharge antivibrator RL, electric discharge antivibrator RL and the first high-speed eddy switch K0 is in parallel with resonant capacitor C, controllable silicon SCR respectively after connecting, and one end of this parallel connected end is connected with one end of the second high-speed eddy switch K1, another termination bus of the second high-speed eddy switch K1；The other end of this parallel connected end is protected one end of reactor L and is connected with mother, female another terminating load protecting reactor L.This utility model has that action is fast, simple in construction, the advantage such as safe and reliable, this bus residual voltage holding means can put into female guarantor's reactor in 200us, the short-circuit current of this feeder line is restricted to the size of the rated current of this feeder line, prevent the further expansion of short trouble scope, bus not decompression when feeder line branch, short-circuit fault is effectively ensured, short trouble excision stepmother can be realized again and protect zero loss of reactor.
Description
Technical field
This utility model relates to electrical system bus residual voltage and keeps technical field, especially a kind of series resonance bus residual voltage
Holding means.
Background technology
Along with expanding economy, the sharp increase of business electrical load, electrical network median generatrix institute band branch road gets more and more, works as mother
Under line, a certain bar branch road is short-circuited, and the busbar voltage being connected with this branch road drops seriously suddenly, and the voltage of bus remnants is generally below
The 20% of rated voltage, only cut-offs when this branch breaker, has excised short trouble, and busbar voltage could be recovered.Busbar voltage
It is exactly chopper time of cut-offfing short trouble during this period of time from suddenly dropping to recover, about at about 0.1 second.Busbar voltage occurs
During this period of time, Enterprise Power System referred to as " shakes electric " depression.
During " shaking electric " occurs, bus residual voltage is the lowest, makes the load running of some faults that are not short-circuited interrupt, as become
Frequently device, motor, relay, electromagnetic valve etc..These are referred to as sensitive loads to the load of " shaking electric " significant reaction, are characterized in
There is mechanical movement and have electric energy or the existence of magnetic energy energy-storage travelling wave tube.When generally bus residual voltage is below 50%, sensitive loads can be held
" shaking electric " time born is not more than 30ms.When foreign network is short-circuited fault, can district's Intranet is overall (all loads) or portion
Divide important load to be switched to another foreign network, but in district's Intranet, certain branch road is short-circuited and cannot entirety have switched, can only portion
Cut and change.If sensitive loads important in district's Intranet the most artificially focuses on minority branch road or its circuitry number is the most few, part is cut
Changing is to solve the problem that district's Intranet short circuit causes important load to stop transport, and essential condition is intended to outside the suitable district that can switch
Net.If sensitive loads branch road important in district's Intranet is a lot, the cost of part switching is the biggest, if connected outside switchable district
Net condition does not possesses, then district to be solved Intranet rolling electricity problem, using bus residual voltage holding means is desirable scheme.
The bus residual voltage holding means that existing market uses is all the input being protected reactor by High-speed on-off control mother, just
When often running, speed-sensitive switch short circuit mother protects reactor, when branch road is short-circuited fault, and speed-sensitive switch separating brake, mother is protected reactance
Device is concatenated in circuit, and occurring to speed-sensitive switch separating brake from short trouble needs 18ms, and short trouble likely expands bus to
Side, will result in larger range of Power System Shortcuts.
Utility model content
The purpose of this utility model is to provide a kind of action fast, it is possible to prevent the further expansion of short trouble scope,
Bus not decompression when feeder line branch road outlet short trouble, simple in construction, safe and reliable series resonance bus are effectively ensured
Residual voltage holding means.
For achieving the above object, this utility model have employed techniques below scheme: a kind of series resonance bus residual voltage keeps
Device, after connecting including electric discharge antivibrator RL, electric discharge antivibrator RL and the first high-speed eddy switch K0 respectively with resonant capacitor
C, controllable silicon SCR are in parallel, and one end of this parallel connected end is connected with one end of the second high-speed eddy switch K1, and the second high-speed eddy is opened
Close another termination bus of K1；The other end of this parallel connected end is protected one end of reactor L and is connected with mother, and mother protects another of reactor L
Terminating load.
Described electric discharge antivibrator RL is composed in parallel by inductance L1 and resistance R1.
Described first high-speed eddy switch K0, the second high-speed eddy switch K1 are vacuum interrupter arc extinguishing chopper.
Described electric discharge antivibrator RL, the first high-speed eddy switch K0, resonant capacitor C, controllable silicon SCR, the second high speed whirlpool
Stream switch K1 and female reactor L that protects is installed in power distribution cabinet.
As shown from the above technical solution, this utility model has that action is fast, simple in construction, the advantage such as safe and reliable, this mother
Line residual voltage holding means can put into female guarantor's reactor in 200us, and the short-circuit current of this feeder line is restricted to this feeder line
The size of rated current, prevent the further expansion of short trouble scope, bus be effectively ensured in feeder line branch, short-circuit fault
Time not decompression, short trouble excision stepmother can be realized again and protect zero loss of reactor.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Detailed description of the invention
As it is shown in figure 1, a kind of series resonance bus residual voltage holding means, including electric discharge antivibrator RL, discharge antivibrator RL
After connect with the first high-speed eddy switch K0 in parallel with resonant capacitor C, controllable silicon SCR respectively, and one end of this parallel connected end and
One end of second high-speed eddy switch K1 is connected, another termination bus of the second high-speed eddy switch K1；Another of this parallel connected end
End is protected one end of reactor L and is connected with mother, female another terminating load protecting reactor L.Described electric discharge antivibrator RL is by inductance L1
Compose in parallel with resistance R1.Described first high-speed eddy switch K0, the second high-speed eddy switch K1 are vacuum interrupter arc extinguishing
Chopper.Described electric discharge antivibrator RL, the first high-speed eddy switch K0, resonant capacitor C, controllable silicon SCR, the second high-speed eddy
Switch K1 and female reactor L that protects is installed in power distribution cabinet.
As it is shown in figure 1, described controllable silicon SCR short circuit resonant capacitor C in 200us after the system short-circuit, thus put into
Female guarantor reactor L, making feeder current is properly functioning rated current size, makes the chopper of load-side can be effectively isolated fault
Point；Described first high-speed eddy switch K0, when controllable silicon SCR disconnects, continues short circuit resonant capacitor C；Described second at a high speed
Eddy current switch K1, when load-side chopper can not be effectively isolated short circuit trouble point, cuts off whole piece feeder line, prevents short trouble
Further expand；Described resonant capacitor C constitutes series resonance for properly functioning with female guarantor reactor L, it is achieved female guarantor's electricity
Anti-device L zero is lost；Its conducting of Control of Voltage by detection resonant capacitor C two ends of described controllable silicon SCR, when electric current is less than can
When controlling the maintenance electric current of silicon SCR, controllable silicon SCR automatically shuts down；Described first high-speed eddy switch K0, the second high-speed eddy switch
K1 is controlled it by the fast acting control system being arranged in power distribution cabinet and cut-offs.
When working properly, the first high-speed eddy switch K0 disconnects, and the second high-speed eddy switch K1 Guan Bi, mother protects reactor
It is equal in magnitude with resonant capacitor C generation capacitive reactance that L produces induction reactance, the two series resonance, it is achieved during specified operation, mother protects reactor L
Zero loss；
When branch road arbitrary under bus feeder line is short-circuited fault, controller detects fault current, load-side chopper
In the case of cannot cut-offfing, when mother can be protected reactor L input in 200us by controllable silicon SCR, protecting reactor L by mother should
The short-circuit current of bar feeder line is restricted to the size of the rated current of this feeder line, thus effectively prevents bus because of a branch road
Breaking down and make whole piece bus loss of pressure, be greatly reduced the scope of short trouble, controller controls the first high-speed eddy and opens simultaneously
Close K0 Guan Bi, when controllable silicon SCR disconnects, continue short circuit resonant capacitor C；
When mother protects reactor L input, fault branch short circuit current is substantially reduced, and branch breaker can effectively excise this
The short trouble on road；When this branch breaker is because breaking down, it is impossible to when quickly excising the short trouble of this branch road, quickly control
System processed controls the second high-speed eddy switch K1 separating brake immediately, is isolated by whole piece branch road, prevents the further of short trouble
Expand.After short trouble is excised by this branch breaker, fast acting control system controls the first high-speed eddy switch K0 and divides immediately
Lock, seals in loop by resonant capacitor C, protects reactor L with mother and constitutes series resonance, prevents female reactor L that protects from putting into for a long time
Consume the actual motion problem of a large amount of reactive loss and user side brownout.
In sum, this utility model has that action is fast, simple in construction, the advantage such as safe and reliable, and this bus residual voltage keeps
Device can put into female guarantor's reactor in 200us, and the short-circuit current of this feeder line is restricted to the rated current of this feeder line
Size, prevent the further expansion of short trouble scope, bus not decompression when feeder line branch, short-circuit fault be effectively ensured,
Short trouble excision stepmother can be realized again and protect zero loss of reactor.
Claims (4)
1. a series resonance bus residual voltage holding means, it is characterised in that: include discharge antivibrator RL, electric discharge antivibrator RL with
After first high-speed eddy switch K0 series connection in parallel with resonant capacitor C, controllable silicon SCR respectively, and one end of this parallel connected end and the
One end of two high-speed eddy switch K1 is connected, another termination bus of the second high-speed eddy switch K1；The other end of this parallel connected end
The one end protecting reactor L with mother is connected, female another terminating load protecting reactor L.
Series resonance bus residual voltage holding means the most according to claim 1, it is characterised in that: described electric discharge antivibrator RL
Composed in parallel by inductance L1 and resistance R1.
Series resonance bus residual voltage holding means the most according to claim 1, it is characterised in that: described first high-speed eddy
Switch K0, the second high-speed eddy switch K1 are vacuum interrupter arc extinguishing chopper.
Series resonance bus residual voltage holding means the most according to claim 1, it is characterised in that: described electric discharge antivibrator
RL, the first high-speed eddy switch K0, resonant capacitor C, controllable silicon SCR, the second high-speed eddy switch K1 and female guarantor reactor L are equal
It is arranged in power distribution cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620584521.0U CN205724858U (en) | 2016-06-16 | 2016-06-16 | A kind of series resonance bus residual voltage holding means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620584521.0U CN205724858U (en) | 2016-06-16 | 2016-06-16 | A kind of series resonance bus residual voltage holding means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205724858U true CN205724858U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620584521.0U Active CN205724858U (en) | 2016-06-16 | 2016-06-16 | A kind of series resonance bus residual voltage holding means |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849022A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of busbar voltage holding meanss based on current limliting zinc oxide FR |
| CN106849102A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of mesohigh series compensation and depth current limiting system |
| CN106849039A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of novel bus residual voltage holding meanss |
| CN106921151A (en) * | 2017-04-25 | 2017-07-04 | 安徽伊格瑞德电气设备有限公司 | A kind of D.C. magnetic biasing isolation earthed system based on capacitor |
| CN106936118A (en) * | 2017-04-16 | 2017-07-07 | 安徽徽电科技股份有限公司 | A kind of HDF Large Copacities busbar voltage holding meanss |
| CN106953307A (en) * | 2017-03-02 | 2017-07-14 | 安徽伊格瑞德电气设备有限公司 | Self-shield bus residual voltage holding meanss based on Fast Switch with Large Capacity FSR |
| 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 |
| 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 |
-
2016
- 2016-06-16 CN CN201620584521.0U patent/CN205724858U/en active Active
Cited By (8)
| 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 |
| CN106849022A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of busbar voltage holding meanss based on current limliting zinc oxide FR |
| CN106849102A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of mesohigh series compensation and depth current limiting system |
| CN106849039A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of novel bus residual voltage holding meanss |
| CN106953307A (en) * | 2017-03-02 | 2017-07-14 | 安徽伊格瑞德电气设备有限公司 | Self-shield bus residual voltage holding meanss based on Fast Switch with Large Capacity FSR |
| CN106936118A (en) * | 2017-04-16 | 2017-07-07 | 安徽徽电科技股份有限公司 | A kind of HDF Large Copacities busbar voltage holding meanss |
| CN106921151A (en) * | 2017-04-25 | 2017-07-04 | 安徽伊格瑞德电气设备有限公司 | A kind of D.C. magnetic biasing isolation earthed system based on capacitor |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Series resonance generating line residual voltage holding device Effective date of registration: 20170616 Granted publication date: 20161123 Pledgee: Hefei high tech Company limited by guarantee Pledgor: Anhui Huidian Technology Co., Ltd. Registration number: 2017340000092 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180627 Granted publication date: 20161123 Pledgee: Hefei high tech Company limited by guarantee Pledgor: Anhui Huidian Technology Co., Ltd. Registration number: 2017340000092 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Series resonance generating line residual voltage holding device Effective date of registration: 20180629 Granted publication date: 20161123 Pledgee: Hefei high tech Company limited by guarantee Pledgor: Anhui Huidian Technology Co., Ltd. Registration number: 2018340000270 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190701 Granted publication date: 20161123 Pledgee: Hefei high tech Company limited by guarantee Pledgor: Anhui Huidian Technology Co., Ltd. Registration number: 2018340000270 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |