CN206023359U - A kind of standby power switching device - Google Patents
A kind of standby power switching device Download PDFInfo
- Publication number
- CN206023359U CN206023359U CN201620931588.7U CN201620931588U CN206023359U CN 206023359 U CN206023359 U CN 206023359U CN 201620931588 U CN201620931588 U CN 201620931588U CN 206023359 U CN206023359 U CN 206023359U
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- service entrance
- entrance switch
- switch
- bus
- power supply
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- 230000006837 decompression Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 description 9
- 238000007363 ring formation reaction Methods 0.000 description 7
- 230000001360 synchronised effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model discloses a kind of standby power switching device, including the first power supply, second source, the first service entrance switch, the second service entrance switch, bus connection switch；First power supply connects the first bus through the first service entrance switch, and second source connects the second bus through the second service entrance switch；Also include the 3rd power supply, the 3rd service entrance switch, the 4th service entrance switch and power transfer device；3rd power supply connects the first bus through the 3rd service entrance switch, and connects the second bus through the 4th service entrance switch；Five inputs of power transfer device connect the auxiliary contact of the first service entrance switch, the second service entrance switch, the 3rd service entrance switch, the 4th service entrance switch and bus connection switch respectively；Five outfans of the power transfer device connect the control end of the first service entrance switch, the second service entrance switch, the 3rd service entrance switch, the 4th service entrance switch and bus connection switch respectively.This utility model can effectively reduce by two common section buses while the risk of decompression.
Description
Technical field
This utility model is related to a kind of standby power switching device.
Background technology
In prior art, on the bus connection switch of two common section buses, there was only a backup auto-activating device, public for realizing
During any one bus loss of pressure of section, once haul oneself willingly into and restored electricity by other non-decompression bus ribbon, such as in accompanying drawing 1, the first power supply
Switch 2C02 fault trips make public III sections decompression, backup auto-activating device action send out order of closing a floodgate and close mother 2C06 switch, equally work as
Second source switch 2D02 fault trips make public IV sections decompression, backup auto-activating device action send out order conjunction mother 2C06 of closing a floodgate and open
Close, it is ensured that two sections of buses not decompression), there is following risk in this kind of method of operation：When arbitrary bus loss of pressure, backup auto-activating device is moved
Make, during two bus series operations, now two buses have been out stand-by power supply, when operation or is entered bus power end failure
During wiretap jump, two sections of buses will lose voltage simultaneously, the risk that there is 600MW unit two-shipper full cut-ofves.
Therefore, it is necessary to design a kind of higher standby power switching device of safety.
Utility model content
The technical problem solved by this utility model is, for the deficiencies in the prior art, there is provided a kind of stand-by power supply switching
Device, can effectively reduce by two common section buses while the risk of decompression.
The technical scheme adopted by this utility model for：
A kind of standby power switching device, including the first power supply, second source, the first service entrance switch, the second service entrance switch,
Bus connection switch；First power supply connects the first bus through the first service entrance switch, and second source is female through the second service entrance switch connection second
Line；Also include the 3rd power supply, the 3rd service entrance switch, the 4th service entrance switch and power transfer device；3rd power supply is through the 3rd inlet wire
Switch the first bus of connection, and connect the second bus through the 4th service entrance switch；
Five inputs of the power transfer device connect the first service entrance switch, the second service entrance switch respectively, the 3rd enter
The auxiliary contact of wiretap, the 4th service entrance switch and bus connection switch, for gathering the opening and closing state of each switch；
Five outfans of the power transfer device connect the first service entrance switch, the second service entrance switch respectively, the 3rd enter
The control end of wiretap, the 4th service entrance switch and bus connection switch, for controlling the opening and closing state of each switch.
First power supply and second source are respectively through the first high-tension transformer and the second high-tension transformer connection first
Bus and the second bus.
The output of first high-tension transformer is terminated with first voltage transformer, for gathering the inlet wire electricity of the first bus
Pressure；The output of second high-tension transformer is terminated with second voltage transformer, for gathering the primary voltage of the second bus；Institute
State and on the first bus and the second bus, be connected to tertiary voltage transformer and the 4th voltage transformer respectively, be respectively used to gather first
Bus and the voltage of the second bus.
First service entrance switch, the second service entrance switch, the 3rd service entrance switch and the 4th service entrance switch include a conjunction
Lock loop and a sub-gate circuit；The normally-closed contact of one outlet relay is respectively connected in each closing circuit and sub-gate circuit；
The coil of exit relay connects the outfan of power transfer device；On the coil of each exit relay, reverse parallel connection has one to continue
Stream diode, the positive pole of the fly-wheel diode are connected with power cathode.
Beneficial effect：
Compared to existing backup auto-activating device, this utility model can realize the first bus and the second bus (public III, IV
Section bus) stand-by power supply is not lost during ribbon, reduce by two common section buses (public III, IV section bus) while decompression
Risk, improves the safety and reliability of unit operation.Reduce station service cost.
Description of the drawings
Fig. 1 is the backup auto-activating device schematic diagram in background technology；
Fig. 2 is this utility model schematic diagram.
Specific embodiment
This utility model is described in more detail below in conjunction with accompanying drawing.
As shown in Fig. 2 the utility model discloses a kind of standby power switching device, including the first power supply (public III sections
Power supply), second source (public IV sections power supply), the first service entrance switch (2C02), the second service entrance switch (2D02), bus connection switch
(2C06), the first bus (the public III sections buses of 6kV) and the second bus (the public IV sections buses of 6kV)；First power supply enters through first
Wiretap connects the first bus, and second source connects the second bus through the second service entrance switch；Also include the 3rd power supply, the 3rd inlet wire
Switch (2C58), the 4th service entrance switch (2D58) and power transfer device；3rd power supply is female through the 3rd service entrance switch connection first
Line, and connect the second bus through the 4th service entrance switch；
Five inputs of the power transfer device connect the first service entrance switch, the second service entrance switch respectively, the 3rd enter
The auxiliary contact of wiretap, the 4th service entrance switch and bus connection switch, for gathering the opening and closing state of each switch；
Five outfans of the power transfer device connect the first service entrance switch, the second service entrance switch respectively, the 3rd enter
The control end of wiretap, the 4th service entrance switch and bus connection switch, for controlling the opening and closing state of each switch.
First power supply and second source are respectively through the first high-tension transformer (No. 3 high public changes) and the second high pressure transformation
Device (No. 4 high public changes) the first bus of connection and the second bus.
First service entrance switch, the second service entrance switch, the 3rd service entrance switch and the 4th service entrance switch include a conjunction
Lock loop and a sub-gate circuit；The normally-closed contact of one outlet relay is respectively connected in each closing circuit and sub-gate circuit；
The coil of exit relay connects the outfan of power transfer device；On the coil of each exit relay, reverse parallel connection has one to continue
Stream diode, the positive pole of the fly-wheel diode are connected with power cathode.
Operation principle of the present utility model is：
This utility model increases power transfer device newly, acquires public III, IV section busbar voltage, public III, IV section and enters
Line voltage, public III sections service entrance switch the first service entrance switch 2C02 position of the switch, the second service entrance switch of public IV sections service entrance switch
The 2D02 position of the switch, bus connection switch 2C06 positions enter power transfer device, send the first service entrance switch after logic control
2C02, the second service entrance switch 2D02, mother 2C06 close trip signal and the 3rd service entrance switch 2C58, the 4th service entrance switch 2D58 are jumped
Lock order.Concrete element is as shown in Figure 2.
The control logic of newly-increased power transfer device is divided into bright, dark two kinds of standby modes, and switch logic is flexible.
Bright standby mode be bus connection switch 2C06 in "on" position, two sections of bus power supplys of public III, IV sections of 6kV are by first
Service entrance switch 2C02 or mono- road power supplys of the second service entrance switch 2D02 are powered；Dark standby mode be bus connection switch 2C06 in separating brake shape
State, two sections of bus power supplys of public III, IV section are supplied respectively to two sections of mothers by the first service entrance switch 2C02 and the second service entrance switch 2D02
Line.And the 3rd power supplys of 10KV for having tail water to supply on 10KV buses are become due to construction, for preventing during power transfer device action pair
Public III, IV section busbar voltage level produces impact, causes handoff failure, and switch logic is as follows：
Switch logic under dark standby (bus connection switch open position) method of operation, the public III sections power supplys of 6kV are high by No. 3
Public become when switching to the public IV sections ribbon of 6kV：If before power transfer device switching, 2D58 is switched in closing position, the public IV of 6kV
Section becomes 10kV buses into same system with construction, and non-synchronous cyclization will not occur；If 2D58 switches equally will not in trip position
Generation non-synchronous cyclization, therefore need to only cut off 2C58 switches (the 3rd switch), need not cut off 2D58 switches.Power transfer device is moved
Make (improper switching, manual switching, judging accident) and close bus connection switch 2C06, jump the first service entrance switch of public III sections inlet wire
2C02, public III sections are powered by public IV sections, and now 2C58 switches cut by power transfer device connection, retain public IV sections to construction
Transformer station's power supply 2D58 switches.
Switch logic under dark standby (bus connection switch open position) method of operation, public IV sections power supply is by No. 4 high public changes
When switching to the public III sections ribbon of 6kV：If before power transfer device switching, 2C58 is switched in closing position, the public III sections of 6kV
Become 10kV buses into same system with construction, non-synchronous cyclization will not occur；If 2C58 switches will not be equally sent out in trip position
Raw non-synchronous cyclization, therefore need to only cut off 2D58 switches, need not cut off 2C58 switches.That is power transfer device action is (improper
Switching, manual switching, judging accident) mother 2C06 switch is closed, public the second service entrance switch of IV sections 2D02 is jumped, public IV sections are by public affairs
Powered with III sections；Now fast switching device connection cuts public IV sections to transformer station's power supply 2D58 switches of constructing, and retains public III sections extremely
Construction transformer station power supply 2C58 switches.
Manual switching logic under bright standby (bus connection switch closing position) method of operation, power supply is by No. 3 high public change ribbon
Public III, IV section, when after switching, public IV sections power supply switchs to No. 4 high public changes by public III sections：If 2C58 is switched in closing position
Put, then the public III sections of 6kV become 10kV buses into same system with construction, for preventing non-synchronous cyclization after switching, power supply switching dress
Put.That is manual switching of the bus connection switch at " combined floodgate " position, power transfer device action are closed public
IV sections the second service entrance switch of inlet wire 2D02 is switched, and jumps mother 2C06 switch, and public III sections are by No. 3 high public change power supplies, public IV sections
Powered by No. 4 high public changes, now 2D58 switches cut by power transfer device connection, retain public III sections to construction transformer station power supply
2C58 is switched.
Manual switching logic under bright standby (bus connection switch closing position) method of operation, power supply is by No. 4 high public change ribbon
Public III, IV section, when after switching, public III sections power supply switchs to #3 high public affairs changes by public IV sections：If 2D58 is switched in closing position
Put, then the public IV sections of 6kV become 10kV buses into same system with construction, for preventing non-synchronous cyclization after switching, power supply switching dress
Put.That is manual switching of the bus connection switch at " combined floodgate " position, power transfer device action are closed public
III sections inlet wire the second service entrance switch the first service entrance switch of 2D02 2C02 is switched, and jumps mother 2C06 switch, and public III sections are high by No. 3
Public change is powered, and public IV sections are cut 2C58 and switched by No. 4 high public change power supplies, now power transfer device connection, retain public IV sections extremely
Construction transformer station power supply 2D58 switches.
Improper switching, judging accident under bright standby (bus connection switch closing position) mode, either 2C58 switch still
, there is the possibility of non-synchronous cyclization after switching to stand-by power supply, therefore need while cutting off 2C58 and 2D58 in 2D58 switch operations
Switch.
(bus connection switch closing position) improper switching, judging accident under the power transfer device bright standby method of operation, electricity
Source switching device action, while cut off public III, IV section to transformer station's two-way power supply of constructing.Above power transfer device connection is cut
2C58,2D58 outlet need to be simultaneously emitted by with cut.
Close a floodgate as automatic switching device of standby power supply is replaced by original relay protection in fast switching device common section electric power incoming line switch,
Tripping relay need to change quick exit relay, and relay coil two ends need reverse parallel connection fly-wheel diode, meet fast
Cut out a mouthful countermeasure.
Increase T0 sections in the high public change zero-sequenceprotection of 3, No. 4 machine generator-transformer protections respectively, improve public III, IV
Relaying configuration during section ribbon, high public change zero sequence jump mother of the switch, when preventing by ribbon bus-bar fault, cause two sections of buses while losing
Pressure.
Through test, after electric network reconstruction, indices are normal, disposable by electricity success.The technical solution of the utility model is thrown
It is transported to modern economic benefit substantially, unit station service electrical system stability and security performance are significantly improved, and power transfer device puts into operation
So far, there is not malfunction, cuts situation by mistake in normal operation.
Claims (4)
1. a kind of standby power switching device, including the first power supply, second source, the first service entrance switch, the second service entrance switch are female
Connection switch；First power supply connects the first bus through the first service entrance switch, and second source connects the second bus through the second service entrance switch；
It is characterized in that：Also include the 3rd power supply, the 3rd service entrance switch, the 4th service entrance switch and power transfer device；3rd power supply is passed through
3rd service entrance switch connects the first bus, and connects the second bus through the 4th service entrance switch；
Five inputs of the power transfer device connect the first service entrance switch, the second service entrance switch, the 3rd inlet wire respectively and open
The auxiliary contact of pass, the 4th service entrance switch and bus connection switch, for gathering the opening and closing state of each switch；
Five outfans of the power transfer device connect the first service entrance switch, the second service entrance switch, the 3rd inlet wire respectively and open
The control end of pass, the 4th service entrance switch and bus connection switch, for controlling the opening and closing state of each switch.
2. standby power switching device according to claim 1, it is characterised in that：First power supply and second source point
The first bus and the second bus are not connected through the first high-tension transformer and the second high-tension transformer.
3. standby power switching device according to claim 2, it is characterised in that：The output of first high-tension transformer
First voltage transformer is terminated with, for gathering the primary voltage of the first bus；The output termination of second high-tension transformer
There is second voltage transformer, for gathering the primary voltage of the second bus；It is connected on first bus and the second bus respectively
Tertiary voltage transformer and the 4th voltage transformer, are respectively used to the voltage for gathering the first bus and the second bus.
4. the standby power switching device according to any one of claims 1 to 3, it is characterised in that：First inlet wire
Switch, the second service entrance switch, the 3rd service entrance switch and the 4th service entrance switch include a closing circuit and a sub-gate circuit；
The normally-closed contact of one outlet relay is respectively connected in each closing circuit and sub-gate circuit；The coil of exit relay connects power supply
The outfan of switching device, on the coil of each exit relay, reverse parallel connection has a fly-wheel diode, two pole of the afterflow
The positive pole of pipe is connected with power cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620931588.7U CN206023359U (en) | 2016-08-24 | 2016-08-24 | A kind of standby power switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620931588.7U CN206023359U (en) | 2016-08-24 | 2016-08-24 | A kind of standby power switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206023359U true CN206023359U (en) | 2017-03-15 |
Family
ID=58250948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620931588.7U Expired - Fee Related CN206023359U (en) | 2016-08-24 | 2016-08-24 | A kind of standby power switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206023359U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350650A (en) * | 2019-07-05 | 2019-10-18 | 广西电网有限责任公司梧州供电局 | The highly reliable quick power transfer device of large capacity and its method for handover control |
| CN114050638A (en) * | 2021-10-18 | 2022-02-15 | 施耐德万高（天津）电气设备有限公司 | Four-incoming-line one-bus-coupler electrical interlocking system and control method thereof |
-
2016
- 2016-08-24 CN CN201620931588.7U patent/CN206023359U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350650A (en) * | 2019-07-05 | 2019-10-18 | 广西电网有限责任公司梧州供电局 | The highly reliable quick power transfer device of large capacity and its method for handover control |
| CN110350650B (en) * | 2019-07-05 | 2024-03-22 | 广西电网有限责任公司梧州供电局 | High-capacity high-reliability rapid power supply switching device and switching control method thereof |
| CN114050638A (en) * | 2021-10-18 | 2022-02-15 | 施耐德万高（天津）电气设备有限公司 | Four-incoming-line one-bus-coupler electrical interlocking system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20170824 |
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| CF01 | Termination of patent right due to non-payment of annual fee |