CN205882834U - Switching station energy storage power auto -change over device - Google Patents
Switching station energy storage power auto -change over device Download PDFInfo
- Publication number
- CN205882834U CN205882834U CN201620609039.8U CN201620609039U CN205882834U CN 205882834 U CN205882834 U CN 205882834U CN 201620609039 U CN201620609039 U CN 201620609039U CN 205882834 U CN205882834 U CN 205882834U
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- power
- rectifier bridge
- power supply
- electric capacity
- switch
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- 238000004146 energy storage Methods 0.000 title claims abstract description 37
- 239000003990 capacitor Substances 0.000 claims abstract description 26
- 230000005611 electricity Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model is suitable for a join in marriage net stand -by power supply technical field, provide a switching station energy storage power auto -change over device, including rectifier unit, energy storage unit and automatic switching control unit. Its energy storage unit adopts the energy -storage capacitor of high -pressure large capacity, and automatic switching control unit adopts the relay to accomplish, can realize the power supply loop fast switch over according to the power supply voltage size is automatic, guarantees still can keep a period to last power output when the lower or outage of input mains voltage, and failure to operation of protection leads to the bypass the immediate leadership condition of tripping operation of higher level's switching station or transformer substation, reinforcing service reliability when having solved the circuit short circuit.
Description
Technical field
This utility model belongs to distribution alternate power technologies field, particularly relates to a kind of switchyard energy storage for power supply switching dress
Put.
Background technology
Become the power distribution network 10kV switchyard of power supply by PT (voltage transformer) or used, repeatedly there is circuit in its protection device
Short circuit time relay fail cause higher level's switchyard or transformer station bypass the immediate leadership tripping operation situation.Through experimental study and analysis and research, sentence
When being set to line short, PT or used change supply voltage falls so that the power supply decompression of protection device and breaking coil
Electricity shortage, thus cause chopper can not trip excision induced fault.
Traditional solution typically has two kinds: the first is to change switchyard into DC source to power, and i.e. uses electric power storage
Pond combination DC charging module composition DC power system is powered；The second is to install ups power on the basis of existing additional to power.This
Two schemes all must comprise accumulator.Because of accumulator poor reliability, needing to safeguard, the life-span is shorter, counter becomes in whole system
Weak link.So both schemes are not welcome by on-the-spot operation maintenance personnel.
Utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of switchyard energy storage for power supply switching device, it is intended to
Solve existing scheme due to needs storage battery power supply, poor reliability, need the technical problem safeguarded, the life-span is shorter.
This utility model adopts the following technical scheme that
Described switchyard energy storage for power supply switching device includes rectification unit, energy-storage units and auto-changeover control unit,
Power input passes sequentially through described rectification unit, energy-storage units is connected to the first of described auto-changeover control unit and inputs
End, power input is also linked directly to the second input of described auto-changeover control unit, described automatic switchover control simultaneously
The common port of unit processed is as power output end, when power input voltage is relatively low or during power-off, described first input end with
Described common port connects, and when power input voltage is normal, described second input is connected with described common port.
Further, described energy-storage units is storage capacitor C, and described rectification unit includes rectifier bridge D1, resistance R1, described
Power input includes that power firestreak and zero-power line, described power firestreak are connected to the second end and the 3rd end of rectifier bridge D1,
First end of rectifier bridge D1 is connected to the positive pole of storage capacitor C by resistance R1, and the negative pole of storage capacitor C is connected to described power supply
Zero line.
Further, described power output end includes exporting live wire and output zero line, described auto-changeover control unit bag
Include rectifier bridge D2, the second filter circuit, the second relay, rectifier bridge D3, the first filter circuit, the first relay, described second
Relay includes coil J2, switch S2, and described first relay includes coil J1 and switch S1, and described power firestreak is connected to whole
3rd end of stream bridge D2, zero-power line is connected to second end of rectifier bridge D2, and first end of described rectifier bridge D2 passes sequentially through the
Two filter circuits, coil J2 are connected to the 4th end of rectifier bridge D2, and first end of described switch S2 is unsettled, and second end of S2 connects
To described power firestreak, the second end of the public three-terminal link of S2 to switch S1 and the 3rd end of rectifier bridge D3, rectifier bridge
Second end of D3 is connected to described zero-power line, and first end of rectifier bridge D3 passes sequentially through the second rectification circuit, coil J1 connects
To the 4th end of rectifier bridge D3, first end of described switch S1 is connected to the positive pole of described storage capacitor C, public the of switch S1
Three-terminal link is to the output live wire of power output end, and the output zero line of power output end is connected to the power supply of described power input
Zero line.
Further, described second filter circuit and the first filter circuit all use capacitor filter, described second filter
Wave circuit includes electric capacity C13, resistance R2, electric capacity C23, diode D5, wherein electric capacity C13 in parallel with resistance R2 then with electric capacity
C23, the parallel circuit in series of diode D5, described first filter circuit includes electric capacity C24, resistance R3, electric capacity C24, diode
D5, wherein electric capacity C24 in parallel with resistance R3 then with electric capacity C25, the parallel circuit in series of diode D4.
The beneficial effects of the utility model are: this utility model installs a rectification list additional to the control protective loop of switchyard
Unit, energy-storage units and auto-changeover control unit, to realize powering to protection device and trip(ping) circuit；Normal at supply voltage
Time, protection device and trip(ping) circuit powered by PT or used change, and once Voltage Drop is to less than 70%, auto-changeover control unit
Switching to current supply circuit by energy-storage units, energy-storage units power to protection device and trip(ping) circuit, energy-storage units can carry
For the power supply of more than 5 seconds, it is ensured that still can normally can trip when the too low even disappearance of supply voltage in loop, can effectively solve
A large amount of relay fail problems that current switch station exists, certain degree reduces mistake power failure area, it is provided that power supply reliability.For with
Power supply quality is improved at family, creates huge economic benefit for electric company.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the switchyard energy storage for power supply switching device that this utility model embodiment provides.
Fig. 2 is the circuit diagram of energy storage section；
Fig. 3 is the circuit diagram of control part.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain
This utility model, is not used to limit this utility model.
In order to technical scheme described in the utility model is described, illustrate below by specific embodiment.
Fig. 1 shows the principle of the switchyard energy storage for power supply switching device that this utility model embodiment provides, for the ease of
Illustrate to illustrate only the part relevant to this utility model embodiment.
As it is shown in figure 1, the switchyard energy storage for power supply switching device that the present embodiment provides includes rectification unit 1, energy-storage units 2
And auto-changeover control unit 3, power input passes sequentially through described rectification unit, energy-storage units 2 be connected to described automatically
The first input end of switching control list 3, power input is also linked directly to the second of described auto-changeover control unit 3 simultaneously
Input, the common port of described auto-changeover control unit 3 is as power output end.When power input voltage is relatively low (such as
Voltage Drop 70% or more) or during power-off, described first input end is connected with described common port, when power input electricity
When positive pressure is normal, described second input is connected with described common port.
This device is used for sealer existing control protective loop, this device energy storage core be energy-storage units with automatically
Switch control unit, described energy-storage units uses the storage capacitor storage electric energy of larger capacity.Storage capacitor is at externally fed electricity
When source is normal, power supply electric energy is provided to store by rectification unit.Storage capacitor is in hot stand-by duty work, its
Power does not export.When external voltage relatively low even power-off, auto-changeover control unit completes loop switch, it is achieved by energy storage
Capacitances to supply power.
The core component of described auto-changeover control unit is relay, and when power input voltage is normal, relay is just
It is in adhesive state time often, automatically switches to externally fed power supply and directly power.When external electrical forces down, relay disconnects automatically, complete
Become current supply circuit switching, externally fed power supply output switching time normal to storage capacitor power supply is exported, it is ensured that continual
The power supply output continuing some seconds, the most at least can ensure that power supply output in 5 seconds, it is ensured that in switching station or transformer station
During line fault decompression, protection device and trip(ping) circuit still can be tripped by correct operation, it is ensured that excision fault.This device switch operating
Being completed by relay, whole switching time is less than 1ms.This utility model is without using single-chip microcomputer, PLC etc. to control parts, real
Now the voltage condition automatically according to power input completes switching, controls compared to single-chip microcomputer, PLC voltage detecting, and cost is lower,
Safety is more preferable.
Described rectification unit, the energy storage section of energy-storage units structure cost apparatus, described auto-changeover control unit is as this
The switching control part of device.As a kind of application example, the input termination alternating current 220V of described device, output connects termination and protects
Protect screen, during installation, this device is sealed in sealer current supply circuit.The a kind of concrete of energy storage section and control part is described below
Circuit structure application example.
As in figure 2 it is shown, described rectification unit includes rectifier bridge D1, resistance R1, described power input includes power firestreak
L220Vin and zero-power line N220Vin, alternating current 220V.Described rectifier bridge is sequentially connected with in the same direction by four diodes and forms, and is formed
Four points of connection, this four points of connection formed rectifier bridge the first end to the 4th end, four points of connection label successively, it is illustrated that in
Lower two end points are the 3rd end and the second end, and two, left and right end points is the 4th end and the first end.When subsequent descriptions rectifier bridge is respectively held,
Identical with this naming rule.Described power firestreak L220Vin is connected to the second end and the 3rd end of rectifier bridge D1, rectifier bridge D1's
First end is connected to the positive pole of storage capacitor C by resistance R1, and the negative pole of storage capacitor C is connected to described zero-power line
N220Vin.Power firestreak L220Vin is charged to storage capacitor C1 by rectifier bridge D1, resistance R1, and storage capacitor is in stand-by heat
Operation, its power does not export.When external voltage relatively low even power-off, auto-changeover control unit completes current supply circuit
Switching, storage capacitor discharges.
As it is shown on figure 3, described power output end includes exporting live wire LOUT and output zero line NOUT, described automatic switchover control
Unit processed includes rectifier bridge D2, the second filter circuit, the second relay, rectifier bridge D3, the first filter circuit, the first relay,
Described second relay includes coil J2, switch S2, and described first relay includes coil J1 and switch S1, described power firestreak
L220Vin is connected to the 3rd end of rectifier bridge D2, and zero-power line N220Vin is connected to second end of rectifier bridge D2, described rectification
First end of bridge D2 passes sequentially through the second filter circuit, coil J2 is connected to the 4th end of rectifier bridge D2, the of described switch S2
One end is unsettled, and second end of S2 is connected to described power firestreak L220Vin, and the public three-terminal link of S2 is to switching the second of S1
End and the 3rd end of rectifier bridge D3, second end of rectifier bridge D3 is connected to described zero-power line N220Vin, the of rectifier bridge D3
One end passes sequentially through the second rectification circuit, coil J1 is connected to the 4th end of rectifier bridge D3, and first end of described switch S1 connects
To the positive pole of described storage capacitor C, the output live wire LOUT of the public three-terminal link of switch S1 to power output end, power supply is defeated
The output zero line NOUT going out end is connected to the zero-power line N220Vin of described power input.Here output live wire LOUT connects
Public 3rd end of switch S1 be equivalent to the common port of aforementioned auto-changeover control unit.Before second end of switch S2 is equivalent to
State the second input of auto-changeover control unit.First end of switch S1 is equivalent to the first of aforementioned auto-changeover control unit
Input.
As described first filter circuit and a kind of particular circuit configurations of the second filter circuit, described second filter circuit
With the first filter circuit all use capacitor filter, described second filter circuit include electric capacity C13, resistance R2, electric capacity C23,
Diode D5, wherein electric capacity C13 in parallel with resistance R2 then with electric capacity C23, the parallel circuit in series of diode D5, described first
Filter circuit includes electric capacity C24, resistance R3, electric capacity C24, diode D5, wherein electric capacity C24 in parallel with resistance R3 then with electric capacity
C25, the parallel circuit in series of diode D4.
During specific works, when power supply is normal, coil J2 is energized, the second relay work, and switch S2 contact is switched to
Second end, i.e. L220Vin, rectifier bridge D3 obtains electric, and coil J1 is energized, the first relay work, and switch S1 contact is switched to the second end,
I.e. K2 position in diagram, so output LOUT lead directly to input L220Vin, and now, sealer is directly powered by power supply.When
When power supply fault causes brownout or power-off, the second relay electric-loss, contact change-over to the first end, the most public
Three ends are unsettled, D3 power down, now the coil J1 dead electricity therewith of the first relay, and contact change-over, to the first end, i.e. illustrates K1 position,
So output LOUT is directly connected with storage capacitor K1 point, storage capacitor C continue to power to sealer.
This device is when supply input supply voltage is normal, and the out-put supply of device is provided by supply input power supply, works as confession
When electricity input power disappears or be too low, switch to immediately and powered by internal storage capacitor, it is ensured that continual lasting some seconds
Power supply output, it is ensured that when switching station or substation line fault decompression, protection device and trip(ping) circuit still can be just
Positive motion trips, it is ensured that excision fault.
To sum up, the present embodiment energy storage section uses the storage capacitor of high-voltage large-capacity, and auto-changeover control unit uses and continues
Electrical equipment completes, it is possible to is automatically obtained current supply circuit according to supply voltage size and is switched fast, it is ensured that be relatively low at input supply voltage
Or a period of time constant current source during power-off, still can be kept to export, when solving line short, relay fail causes higher level's switchyard
Or transformer station bypass the immediate leadership tripping operation situation, strengthen power supply reliability.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (4)
1. a switchyard energy storage for power supply switching device, it is characterised in that include rectification unit, energy-storage units and automatic switchover
Control unit, power input passes sequentially through described rectification unit, energy-storage units is connected to described auto-changeover control unit
First input end, power input is also linked directly to the second input of described auto-changeover control unit simultaneously, described from
The common port of dynamic switch control unit is as power output end, when power input voltage is relatively low or during power-off, and described first
Input is connected with described common port, and when power input voltage is normal, described second input is connected with described common port.
2. switchyard energy storage for power supply switching device as claimed in claim 1, it is characterised in that described energy-storage units is storage capacitor
C, described rectification unit includes rectifier bridge D1, resistance R1, and described power input includes power firestreak and zero-power line, described electricity
Source live wire is connected to the second end and the 3rd end of rectifier bridge D1, and first end of rectifier bridge D1 is connected to storage capacitor by resistance R1
The positive pole of C, the negative pole of storage capacitor C is connected to described zero-power line.
3. switchyard energy storage for power supply switching device as claimed in claim 2, it is characterised in that described power output end includes output
Live wire and output zero line, described auto-changeover control unit includes rectifier bridge D2, the second filter circuit, the second relay, rectification
Bridge D3, the first filter circuit, the first relay, described second relay includes coil J2, switch S2, described first relay bag
Vinculum circle J1 and switch S1, described power firestreak is connected to the 3rd end of rectifier bridge D2, and zero-power line is connected to rectifier bridge D2's
Second end, first end of described rectifier bridge D2 passes sequentially through the second filter circuit, coil J2 is connected to the 4th end of rectifier bridge D2,
First end of described switch S2 is unsettled, and second end of S2 is connected to described power firestreak, and the public three-terminal link of S2 is to switch
Second end of S1 and the 3rd end of rectifier bridge D3, second end of rectifier bridge D3 is connected to described zero-power line, rectifier bridge D3's
First end passes sequentially through the second rectification circuit, coil J1 is connected to the 4th end of rectifier bridge D3, and first end of described switch S1 is even
Being connected to the positive pole of described storage capacitor C, the output live wire of the public three-terminal link of switch S1 to power output end, power supply exports
The output zero line of end is connected to the zero-power line of described power input.
4. switchyard energy storage for power supply switching device as claimed in claim 3, it is characterised in that described second filter circuit and first
Filter circuit all uses capacitor filter, described second filter circuit to include electric capacity C13, resistance R2, electric capacity C23, diode
D5, wherein electric capacity C13 in parallel with resistance R2 then with electric capacity C23, the parallel circuit in series of diode D5, described first filtered electrical
Road includes electric capacity C24, resistance R3, electric capacity C24, diode D5, wherein electric capacity C24 in parallel with resistance R3 then with electric capacity C25, two
The parallel circuit in series of pole pipe D4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620609039.8U CN205882834U (en) | 2016-06-20 | 2016-06-20 | Switching station energy storage power auto -change over device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620609039.8U CN205882834U (en) | 2016-06-20 | 2016-06-20 | Switching station energy storage power auto -change over device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205882834U true CN205882834U (en) | 2017-01-11 |
Family
ID=57691925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620609039.8U Expired - Fee Related CN205882834U (en) | 2016-06-20 | 2016-06-20 | Switching station energy storage power auto -change over device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205882834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767807A (en) * | 2018-07-25 | 2018-11-06 | 佛山科学技术学院 | A kind of 10kV breaker dual control trip circuits for distribution automation |
-
2016
- 2016-06-20 CN CN201620609039.8U patent/CN205882834U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767807A (en) * | 2018-07-25 | 2018-11-06 | 佛山科学技术学院 | A kind of 10kV breaker dual control trip circuits for distribution automation |
| CN108767807B (en) * | 2018-07-25 | 2023-10-31 | 佛山科学技术学院 | Dual-control tripping circuit for 10kV circuit breaker for distribution network automation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20170111 Termination date: 20180620 |