CN107069935A - The power switching device controlled based on PLC - Google Patents
The power switching device controlled based on PLC Download PDFInfo
- Publication number
- CN107069935A CN107069935A CN201710193153.6A CN201710193153A CN107069935A CN 107069935 A CN107069935 A CN 107069935A CN 201710193153 A CN201710193153 A CN 201710193153A CN 107069935 A CN107069935 A CN 107069935A
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- CN
- China
- Prior art keywords
- switching device
- power supply
- contactor
- plc
- short circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012423 maintenance Methods 0.000 claims abstract description 31
- 238000012360 testing method Methods 0.000 description 7
- 101100408464 Caenorhabditis elegans plc-1 gene Proteins 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention discloses a kind of power switching device controlled based on PLC, including working power, stand-by power supply, overhaul power supply, the working power, stand-by power supply, the output end of maintenance power supply is connected with switching device A and switching device B parallel with one another, the other end of the switching device A and No. I interlocking contact device, No. I short circuit contactor is connected, the other end of the switching device B and No. II interlocking contact device, No. II short circuit contactor is connected, the other end of No. I interlocking contact device, it is connected after the other end of No. II interlocking contact device is in parallel with experimental provision, the switching device A, switching device B is connected into PLC.The present invention effectively raises reliability and security of the switching equipment in electric power system, can meet the continuity requirement powered for a long time.
Description
Technical field
The invention belongs to a kind of circuit switching device, and in particular to a kind of power switching device controlled based on PLC.
Background technology
For major test room test for, testing equipment operation cycle it is longer, process of the test do not allow because power supply therefore
Hinder and shut down for a long time, therefore to possess the condition that satisfaction is run steadily in the long term for electric power system of its power supply, so a set of high
The stable operation that the electric power system of reliability is tested for major test room is particularly important.
The whether reliable of Intermediate frequency power supply system system is largely determined that switching equipment is main by the handoff functionality of switching equipment
Undertake frequency converter failure switching, it is ensured that the continuous operation of electric power system.Perfect handoff functionality can solve the problem that complex situation
Under failure be essential will, and traditional electric power system only ensures standby switching when frequency converter breaks down, and but ignores switching and sets
It is standby break down or maintenance and repair situation, especially for the cycle of operation for several years experiment, switching equipment can not be in length
Maintenance and repair is carried out under time stopped status.
The content of the invention
The present invention proposes that the purpose is to provide a kind of confession controlled based on PLC to solve the problem of prior art is present
Electrical switching apparatus.
The technical scheme is that：A kind of power switching device controlled based on PLC, including working power, standby electricity
Source, maintenance power supply, the working power, stand-by power supply, output end and switching device A parallel with one another and the switching for overhauling power supply
Device B is connected, and the other end of the switching device A is connected with No. I interlocking contact device, No. I short circuit contactor, the switching device
The B other end is connected with No. II interlocking contact device, No. II short circuit contactor, the other end of No. I interlocking contact device, No. II mutual interlocking
It is connected after the other end of tentaculum is in parallel with experimental provision, the switching device A, switching device B are connected into PLC.
The switching device A includes No. I working trunk parallel with one another, No. I standby/maintenance main line, and No. I work is dry
Line includes No. I disconnecting switch of series connection, No. I loop contactor, and No. I disconnecting switch is suitable for reading to be connected with working power, and described I
Mouth is connected with No. I interlocking contact device, No. I short circuit contactor under number loop contactor, and described No. I standby/maintenance main line includes string
No. I change-over switch, No. II loop contactor of connection, No. I change-over switch selectivity suitable for reading are connected into stand-by power supply, maintenance electricity
Mouth is connected with No. I interlocking contact device, No. I short circuit contactor under source, No. II loop contactor.
The switching device B includes No. II working trunk parallel with one another, No. II standby/maintenance main line, described II
Number working trunk includes No. II disconnecting switch of series connection, No. III loop contactor, and No. II disconnecting switch is suitable for reading with work electricity
Source is connected, and mouth is connected with No. II interlocking contact device, No. II short circuit contactor under No. III loop contactor, and described No. II standby
With/No. II change-over switch, No. IV loop contactor that main line includes connecting are overhauled, No. II change-over switch selectivity suitable for reading connects
Enter mouth and No. II interlocking contact device, No. II short circuit contactor phase under stand-by power supply, maintenance power supply, No. IV loop contactor
Even.
The PLC is powered by direct current 24V, and the PLC includes digital input end and digital output end.
The PLC digital input end collection switching device A and switching device B in disconnecting switch, change-over switch,
Loop contactor, No. I short circuit contactor, No. II short circuit contactor, No. I interlocking contact device, the state of No. II interlocking contact device are touched
Point, while going back collecting work power supply, stand-by power supply, the start completion signal and fault-signal for overhauling power supply.
Loop contactor, No. I short circuit in the digital output end connection switching apparatus A and switching device B of the PLC
Contactor, No. II short circuit contactor, while exporting for controlling working power, stand-by power supply, maintenance power supply start stop signal.
The present invention is applied in longtime running and the testing equipment electric power system higher to power supply continuity, with manually/
The switching equipment automatically controlled, the switching equipment has the manually or automatically control function of three kinds of switching modes, with traditional experiment
Room is compared with switching equipment, is effectively raised reliability and security of the switching equipment in electric power system, can be met long-term
The continuity requirement of power supply.
Brief description of the drawings
Fig. 1 is the connection diagram of the present invention；
Wherein：
The 1 interlocking contact device of PLC 2 I
3 No. II interlocking contact devices, 4 No. I disconnecting switch
5 No. II disconnecting switch, 6 No. I change-over switches
7 No. II change-over switches, 8 No. I loop contactors
9 No. II loop contactors, 10 No. III loop contactors
11 No. IV loop contactors, 12 No. I short circuit contactors
13 No. II working powers of short circuit contactor 14
15 stand-by power supplies 16 overhaul power supply.
Embodiment
Hereinafter, referring to the drawings and embodiment the present invention is described in detail：
As shown in figure 1, a kind of power switching device controlled based on PLC, including working power 14, stand-by power supply 15, maintenance electricity
Source 16, the working power 14, stand-by power supply 15, output end and switching device A parallel with one another and the switching for overhauling power supply 16
Device B is connected, and the other end of the switching device A is connected with No. I interlocking contact device 2, No. I short circuit contactor 12, the switching
The device B other end is connected with No. II interlocking contact device 3, No. II short circuit contactor 13, the other end of No. I interlocking contact device 2, II
Be connected after the other end of number interlocking contact device 3 is in parallel with experimental provision, the switching device A, switching device B are connected into PLC and controlled
In device 1 processed.
The switching device A includes No. I working trunk parallel with one another, No. I standby/maintenance main line, and No. I work is dry
Line includes No. I disconnecting switch 4 of series connection, No. I loop contactor 8, and No. I disconnecting switch 4 is suitable for reading to be connected with working power 14,
8 times mouths of No. I loop contactor are connected with No. I interlocking contact device 2, No. I short circuit contactor 12, and described No. I standby/maintenance is dry
Line includes No. I change-over switch 6 of series connection, No. II loop contactor 9, and No. I change-over switch 6 selectivity suitable for reading is connected into standby electricity
Source 15, maintenance power supply 16,9 times mouths of No. II loop contactor are connected with No. I interlocking contact device 2, No. I short circuit contactor 12.
The switching device B includes No. II working trunk parallel with one another, No. II standby/maintenance main line, described II
Number working trunk includes No. II disconnecting switch 5 of series connection, No. III loop contactor 10, and No. II disconnecting switch 5 be suitable for reading and work
Make power supply 14 to be connected, 10 times mouths of No. III loop contactor are connected with No. II interlocking contact device 3, No. II short circuit contactor 13,
Described No. II standby/maintenance main line includes No. II change-over switch 7 of series connection, No. IV loop contactor 11, and No. II conversion is opened
Close 7 selectivity suitable for reading and be connected into stand-by power supply 15, maintenance power supply 16,11 times mouths of No. IV loop contactor and No. II interlocking contact
Device 3, No. II short circuit contactor 13 are connected.
The PLC 1 is powered by direct current 24V, and the PLC 1 includes digital input end and digital output end.
Disconnecting switch, conversion are opened in the digital input end collection switching device A and switching device B of the PLC 1
Pass, loop contactor, No. I short circuit contactor 12, No. II short circuit contactor 13, No. I interlocking contact device 2, No. II interlocking contact device 3
Status contacts, while go back collecting work power supply 14, stand-by power supply 15, overhaul power supply 16 start completion signal and failure letter
Number.
It is loop contactor in the digital output end connection switching apparatus A and switching device B of the PLC 1, No. I short
Contactor 12, No. II short circuit contactor 13 are connect, while exporting for controlling working power 14, stand-by power supply 15, maintenance power supply 16
Start stop signal.
The PLC 1 is also connected with switching device panel, and the switching device panel sets 5 selecting switch, point
Kong Zhi not performance loop on/off, standby/maintenance loop on/off, short circuit loop on/off, switching device choosing
Select, control/automatically control selection manually.
Standby/maintenance main line sets change-over switch and loop contactor, and short circuit loop sets short circuit contactor.Disconnecting switch
The connection of working trunk and work frequency converter is controlled, change-over switch controls standby/maintenance main line to become with standby variable frequency device and maintenance
The connection of frequency device.Switching device A and switching device B ends are respectively provided with interlocking contact device, it is to avoid two sets of switching devices are also turned on.
The present invention is applied in longtime running and the testing equipment electric power system higher to power supply continuity, with manually/
The switching equipment automatically controlled, the switching equipment has the manually or automatically control function of three kinds of switching modes, with traditional experiment
Room is compared with switching equipment, is effectively raised reliability and security of the switching equipment in electric power system, can be met long-term
The continuity requirement of power supply.
Claims (6)
1. a kind of power switching device controlled based on PLC, including working power（14）, stand-by power supply（15）, maintenance power supply
（16）, it is characterised in that：The working power（14）, stand-by power supply（15）, maintenance power supply（16）Output end with it is parallel with one another
Switching device A be connected with switching device B, the other end of the switching device A and No. I interlocking contact device（2）, No. I short circuit connect
Tentaculum（12）It is connected, the other end of the switching device B and No. II interlocking contact device（3）, No. II short circuit contactor（13）It is connected,
No. I interlocking contact device（2）The other end, No. II interlocking contact device（3）The other end it is in parallel after be connected with experimental provision, it is described to cut
Changing device A, switching device B are connected into PLC（1）In.
2. the power switching device according to claim 1 controlled based on PLC, it is characterised in that：The switching device A bags
No. I working trunk parallel with one another, No. I standby/maintenance main line are included, No. I working trunk includes No. I disconnecting switch of series connection
（4）, No. I loop contactor（8）, No. I disconnecting switch（4）Suitable for reading and working power（14）It is connected, No. I loop contact
Device（8）Lower mouth and No. I interlocking contact device（2）, No. I short circuit contactor（12）It is connected, described No. I standby/maintenance main line includes string
No. I change-over switch of connection（6）, No. II loop contactor（9）, No. I change-over switch（6）Selectivity suitable for reading is connected into stand-by power supply
（15）, maintenance power supply（16）, No. II loop contactor（9）Lower mouth and No. I interlocking contact device（2）, No. I short circuit contactor
（12）It is connected.
3. the power switching device according to claim 1 controlled based on PLC, it is characterised in that：The switching device B bags
Include including No. II working trunk parallel with one another, No. II standby/maintenance main line, No. II working trunk includes No. II of series connection
Disconnecting switch（5）, No. III loop contactor（10）, No. II disconnecting switch（5）Suitable for reading and working power（14）It is connected, it is described
No. III loop contactor（10）Lower mouth and No. II interlocking contact device（3）, No. II short circuit contactor（13）It is connected, described No. II standby
With/overhaul No. II change-over switch that main line includes connecting（7）, No. IV loop contactor（11）, No. II change-over switch（7）On
Mouth selectivity is connected into stand-by power supply（15）, maintenance power supply（16）, No. IV loop contactor（11）Lower mouth and No. II mutual interlocking
Tentaculum（3）, No. II short circuit contactor（13）It is connected.
4. the power switching device according to claim 1 controlled based on PLC, it is characterised in that：The PLC
（1）Powered by direct current 24V, the PLC（1）Including digital input end and digital output end.
5. the power switching device according to claim 4 controlled based on PLC, it is characterised in that：The PLC
（1）Digital input end collection switching device A and switching device B in disconnecting switch, change-over switch, loop contactor, No. I short circuit
Contactor（12）, No. II short circuit contactor（13）, No. I interlocking contact device（2）, No. II interlocking contact device（3）Status contacts, together
When go back collecting work power supply（14）, stand-by power supply（15）, maintenance power supply（16）Start completion signal and fault-signal.
6. the power switching device according to claim 4 controlled based on PLC, it is characterised in that：The PLC
（1）Digital output end connection switching apparatus A and switching device B in loop contactor, No. I short circuit contactor（12）, it is No. II short
Connect contactor（13）, while exporting for controlling working power（14）, stand-by power supply（15）, maintenance power supply（16）Start stop signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193153.6A CN107069935A (en) | 2017-03-28 | 2017-03-28 | The power switching device controlled based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193153.6A CN107069935A (en) | 2017-03-28 | 2017-03-28 | The power switching device controlled based on PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107069935A true CN107069935A (en) | 2017-08-18 |
Family
ID=59619909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710193153.6A Pending CN107069935A (en) | 2017-03-28 | 2017-03-28 | The power switching device controlled based on PLC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107069935A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045201A (en) * | 2019-04-11 | 2019-07-23 | 珠海格力智能装备有限公司 | Intelligent door lock test circuit and intelligent door lock test device |
| CN110868056A (en) * | 2019-12-25 | 2020-03-06 | 核工业理化工程研究院 | Dynamic switching device for remote control frequency converter |
| CN112018864A (en) * | 2019-05-31 | 2020-12-01 | 核工业理化工程研究院 | Multi-power switching control system and control method |
| WO2022087867A1 (en) * | 2020-10-28 | 2022-05-05 | 华为数字能源技术有限公司 | Power supply system and control method |
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| CN201877880U (en) * | 2010-08-05 | 2011-06-22 | 西安陕鼓动力股份有限公司 | Motor controlled switching circuit for primary/standby equipment |
| CN201904648U (en) * | 2011-04-13 | 2011-07-20 | 北京铁通康达铁路通信信号设备有限公司 | Power supply device for dual-power three-phase motor |
| CN202083914U (en) * | 2010-12-01 | 2011-12-21 | 西电(汕头保税区)动力设备有限公司 | Controller based on contactor type ATS (automatic transfer switching equipment) |
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| CN104901417A (en) * | 2015-06-18 | 2015-09-09 | 核工业理化工程研究院 | Power supply switching apparatus based on rapid thyristor switch |
| CN206038788U (en) * | 2016-08-05 | 2017-03-22 | 大唐阳城发电有限责任公司 | Analog switch for device overhaul is cut soon to power |
| CN206673684U (en) * | 2017-03-28 | 2017-11-24 | 核工业理化工程研究院 | A kind of power switching device based on PLC controls |
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2017
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Patent Citations (8)
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| CN201877880U (en) * | 2010-08-05 | 2011-06-22 | 西安陕鼓动力股份有限公司 | Motor controlled switching circuit for primary/standby equipment |
| CN202083914U (en) * | 2010-12-01 | 2011-12-21 | 西电(汕头保税区)动力设备有限公司 | Controller based on contactor type ATS (automatic transfer switching equipment) |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045201A (en) * | 2019-04-11 | 2019-07-23 | 珠海格力智能装备有限公司 | Intelligent door lock test circuit and intelligent door lock test device |
| CN112018864A (en) * | 2019-05-31 | 2020-12-01 | 核工业理化工程研究院 | Multi-power switching control system and control method |
| CN110868056A (en) * | 2019-12-25 | 2020-03-06 | 核工业理化工程研究院 | Dynamic switching device for remote control frequency converter |
| WO2022087867A1 (en) * | 2020-10-28 | 2022-05-05 | 华为数字能源技术有限公司 | Power supply system and control method |
| CN114830489A (en) * | 2020-10-28 | 2022-07-29 | 华为数字能源技术有限公司 | Power supply system and control method |
| CN114830489B (en) * | 2020-10-28 | 2024-03-26 | 华为数字能源技术有限公司 | Power supply system and control method |
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Application publication date: 20170818 |