CN108023350A - A kind of segmentation fast switching system and its method of work based on SCR double-bus - Google Patents
A kind of segmentation fast switching system and its method of work based on SCR double-bus Download PDFInfo
- Publication number
- CN108023350A CN108023350A CN201711366977.5A CN201711366977A CN108023350A CN 108023350 A CN108023350 A CN 108023350A CN 201711366977 A CN201711366977 A CN 201711366977A CN 108023350 A CN108023350 A CN 108023350A
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- CN
- China
- Prior art keywords
- load
- bidirectional triode
- triode thyristor
- busbar
- inlet wire
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Classifications
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- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
Abstract
The present invention relates to a kind of segmentation fast switching system and its method of work based on SCR double-bus.The system includes the first bidirectional triode thyristor, the second bidirectional triode thyristor, the 3rd bidirectional triode thyristor, the first busbar, the second busbar, the first load, the second load and controller.The inlet wire of first bidirectional triode thyristor terminates the first busbar, the end of incoming cables of the first load of outlet termination.The inlet wire of second bidirectional triode thyristor terminates the second busbar, the end of incoming cables of the second load of outlet termination.The end of incoming cables of the first load of inlet wire termination of 3rd bidirectional triode thyristor, the end of incoming cables of the second load of outlet termination.The output terminal of controller connects the control terminal of first, second, third bidirectional triode thyristor respectively.The present invention can be fluctuated in bussed supply voltage, when seriously affecting corresponding load normal operation, be switched on other busbar to the load supplying；And after bussed supply voltage is normal, then switch back on the busbar and power to respective load inlet wire.
Description
Technical field
The present invention relates to the fast incision technology field of electric network source, and in particular to a kind of segmentation based on SCR double-bus is quickly cut
Change system and its method of work.
Background technology
The internal electric network of large and medium-sized enterprise（Abbreviation Intranet）And national grid（Abbreviation outer net）It is connected, forms electric power system.
There is the Voltage Drop that short circuit can all cause whole system in any one branch in the system, and the branch voltage of short circuit occurs
Higher grade, and it is bigger to influence face, and it is also bigger to fall value.After short circuit occurs, action jumps breaker by the protective device of the branch
Lock cuts off fault branch.Occur from short circuit to failure removal this period, system voltage experience from the process for dropping into recovery, this
Kind of phenomenon has different calls in different industries, and some is referred to as " shaking electricity ", and some is referred to as " dead electricity ", or " rocking ", " steep
Drop " etc..
At present, some electricity consumption sensitive equipments such as motor, frequency converter, high-pressure halogen lamp, relay protection etc. of industrial user,
Work as main electricity（Power grid）When occurring more than the steep drop of voltage i.e. so-called " shaking electricity " of more than 20mS or having a power failure in short-term（Power off time
≤2.5S）, motor speed decline or the accidents such as stalling, frequency converter are shut down, relay protection acts can be caused, causes to produce ripple
Dynamic, operation confusion, the lighter cause product quality accident, cause hundreds of thousands, millions of economic losses, and severe one even causes great peace
Full accident, huge economic loss and severe social influence are brought to enterprise.
At present, the switching device that market uses all is to carry out dead electricity switching, this switching device by coil adhesive armature
Voltage Drop is needed to be switched successfully to less than 50%, and switching time is longer, can not meet the continuity of sensitiveness load
Operation, the device that active demand is a kind of to be quick on the draw, switch speed is fast solve current problems faced.
The content of the invention
It is an object of the invention to provide a kind of segmentation fast switching system and its method of work based on SCR double-bus,
The system and its method of work have the characteristics that simple in structure, quick action, safe and reliable.
To achieve the above object, present invention employs following technical scheme：
A kind of segmentation fast switching system based on SCR double-bus, including the first bidirectional triode thyristor, the second bidirectional triode thyristor,
Three bidirectional triode thyristors, the first busbar, the second busbar, the first load, the second load and controller；First bidirectional triode thyristor
Inlet wire terminates the first busbar, the end of incoming cables of the first load of outlet termination；The inlet wire termination second of second bidirectional triode thyristor is female
Line, the end of incoming cables of the second load of outlet termination；The end of incoming cables of the first load of inlet wire termination of 3rd bidirectional triode thyristor, outlet
The end of incoming cables of the load of termination second；The output terminal of the controller connects the control of first, second, third bidirectional triode thyristor respectively
End.
Further, the structure of first, second, third bidirectional triode thyristor is identical, including two it is antiparallel can
Control silicon.
Further, first, second, third bidirectional triode thyristor and controller are installed in power distribution cabinet.
The invention further relates to a kind of method of work of above-mentioned segmentation fast switching system, this method comprises the following steps：
（1）When detecting that the first bussed supply voltage fluctuates, when seriously affecting the normal operation of the first load, controller drives
Dynamic first bidirectional triode thyristor separating brake, the 3rd bidirectional triode thyristor close a floodgate, and by the second busbar to the first load inlet wire power supply, realize to the
The continuous power supply of one load；After detecting that the first bussed supply voltage is normal, controller drives the 3rd bidirectional triode thyristor separating brake,
First bidirectional triode thyristor closes a floodgate, by the first busbar to the first load inlet wire power supply.
（2）When detecting that the second bussed supply voltage fluctuates, when seriously affecting the normal operation of the second load, control
Device drives the second bidirectional triode thyristor separating brake, and the 3rd bidirectional triode thyristor closes a floodgate, and by the first busbar to the second load inlet wire power supply, realizes
Continuous power supply to the second load；After detecting that the second bussed supply voltage is normal, controller drives the 3rd bidirectional triode thyristor
Separating brake, the second bidirectional triode thyristor close a floodgate, by the second busbar to the second load inlet wire power supply.
From above technical scheme, the present invention can be fluctuated in the first bussed supply voltage, seriously affect first
During the normal operation of load, by switch on the second busbar, powered by the second busbar to the first load inlet wire；In the first busbar
After supply voltage is normal, then switch back on the first busbar, by the first busbar to the first load inlet wire power supply；Can also be female second
Line supply voltage fluctuates, female by first by switch on the first busbar when seriously affecting the normal operation of the second load
Line is to the second load inlet wire power supply；After the second bussed supply voltage is normal, then switch back on the second busbar, by the second busbar pair
Second load inlet wire power supply.The present invention has the characteristics that simple in structure, quick action, safe and reliable.
Brief description of the drawings
Fig. 1 is the circuit diagram of the present invention.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
A kind of segmentation fast switching system based on SCR double-bus as shown in Figure 1, including the first bidirectional triode thyristor SCR1, the
Two bidirectional triode thyristor SCR2, the 3rd bidirectional triode thyristor SCR3, the first busbar（Busbar I in Fig. 1）, the second busbar（Mother in Fig. 1
Line II）, first load（Load I in Fig. 1）, second load（Load II in Fig. 1）And controller.Described first is two-way controllable
The inlet wire of silicon terminates the first busbar, the end of incoming cables of the first load of outlet termination.The inlet wire termination the of second bidirectional triode thyristor
Two busbares, the end of incoming cables of the second load of outlet termination.The end of incoming cables of the first load of inlet wire termination of 3rd bidirectional triode thyristor,
The end of incoming cables of the second load of outlet termination.The output terminal of the controller connects the control of first, second, third bidirectional triode thyristor respectively
End processed, the controller are used for the break-make for controlling each bidirectional triode thyristor.
Further, the structure of first, second, third bidirectional triode thyristor is identical, including two it is antiparallel can
Control silicon.
Further, first, second, third bidirectional triode thyristor and controller are installed in power distribution cabinet.
The invention further relates to a kind of method of work of above-mentioned segmentation fast switching system, this method comprises the following steps：
When detecting that the first bussed supply voltage fluctuates, when seriously affecting the normal operation of the first load, controller driving
First bidirectional triode thyristor SCR1 separating brakes, the 3rd bidirectional triode thyristor SCR3 close a floodgate, real by the second busbar to the first load inlet wire power supply
Now to the continuous power supply of the first load；After detecting that the first bussed supply voltage is normal, controller driving the 3rd is two-way controllable
Silicon SCR3 separating brakes, the first bidirectional triode thyristor SCR1 close a floodgate, by the first busbar to the first load inlet wire power supply.
When detecting that the second bussed supply voltage fluctuates, when seriously affecting the normal operation of the second load, controller
The second bidirectional triode thyristor SCR2 separating brakes are driven, the 3rd bidirectional triode thyristor SCR3 closes a floodgate, and the second load inlet wire is supplied by the first busbar
Electricity, realizes the continuous power supply to the second load；After detecting that the second bussed supply voltage is normal, controller driving the 3rd is two-way
3 separating brake of controllable silicon SCR, the second bidirectional triode thyristor SCR2 close a floodgate, by the second busbar to the second load inlet wire power supply.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, should all fall into the protection domain that claims of the present invention determines.
Claims (4)
- A kind of 1. segmentation fast switching system based on SCR double-bus, it is characterised in that：Including the first bidirectional triode thyristor, second Bidirectional triode thyristor, the 3rd bidirectional triode thyristor, the first busbar, the second busbar, the first load, the second load and controller；Described The inlet wire of one bidirectional triode thyristor terminates the first busbar, the end of incoming cables of the first load of outlet termination；Second bidirectional triode thyristor Inlet wire terminates the second busbar, the end of incoming cables of the second load of outlet termination；The inlet wire termination first of 3rd bidirectional triode thyristor is negative The end of incoming cables of load, the end of incoming cables of the second load of outlet termination；The output terminal of the controller connects first, second, third pair respectively To silicon-controlled control terminal.
- A kind of 2. segmentation fast switching system based on SCR double-bus according to claim 1, it is characterised in that：It is described The structure of first, second, third bidirectional triode thyristor is identical, antiparallel silicon-controlled including two.
- A kind of 3. segmentation fast switching system based on SCR double-bus according to claim 1, it is characterised in that：It is described First, second, third bidirectional triode thyristor and controller are installed in power distribution cabinet.
- 4. the method for work of the segmentation fast switching system according to claim 1 ~ 3 any one, it is characterised in that：The party Method comprises the following steps：（1）When detecting that the first bussed supply voltage fluctuates, when seriously affecting the normal operation of the first load, controller drives Dynamic first bidirectional triode thyristor separating brake, the 3rd bidirectional triode thyristor close a floodgate, and by the second busbar to the first load inlet wire power supply, realize to the The continuous power supply of one load；After detecting that the first bussed supply voltage is normal, controller drives the 3rd bidirectional triode thyristor separating brake, First bidirectional triode thyristor closes a floodgate, by the first busbar to the first load inlet wire power supply；（2）When detecting that the second bussed supply voltage fluctuates, when seriously affecting the normal operation of the second load, controller drives Dynamic second bidirectional triode thyristor separating brake, the 3rd bidirectional triode thyristor close a floodgate, and by the first busbar to the second load inlet wire power supply, realize to the The continuous power supply of two loads；After detecting that the second bussed supply voltage is normal, controller drives the 3rd bidirectional triode thyristor separating brake, Second bidirectional triode thyristor closes a floodgate, by the second busbar to the second load inlet wire power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711366977.5A CN108023350A (en) | 2017-12-18 | 2017-12-18 | A kind of segmentation fast switching system and its method of work based on SCR double-bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711366977.5A CN108023350A (en) | 2017-12-18 | 2017-12-18 | A kind of segmentation fast switching system and its method of work based on SCR double-bus |
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| Publication Number | Publication Date |
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| CN108023350A true CN108023350A (en) | 2018-05-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711366977.5A Pending CN108023350A (en) | 2017-12-18 | 2017-12-18 | A kind of segmentation fast switching system and its method of work based on SCR double-bus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711187A (en) * | 2020-06-04 | 2020-09-25 | 广东创电科技有限公司 | Double-bus power supply system and control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0888933A (en) * | 1994-09-14 | 1996-04-02 | Nishishiba Electric Co Ltd | Bus protection system |
| CN201130821Y (en) * | 2007-11-26 | 2008-10-08 | 江苏省电力公司苏州供电公司 | Intelligent control apparatus for energy consumption system |
| CN101741084A (en) * | 2008-11-24 | 2010-06-16 | 苏州凯达电器仪表成套有限公司 | Dual power supply system |
| CN103138171A (en) * | 2013-02-08 | 2013-06-05 | 国家电网公司 | Power electronic transformer substation |
| CN205829289U (en) * | 2016-07-21 | 2016-12-21 | 华自科技股份有限公司 | High pressure undisturbed electric supply installation |
| CN106253461A (en) * | 2016-08-24 | 2016-12-21 | 青岛艾迪森科技股份有限公司 | Novel static switch and control method thereof |
| CN207765957U (en) * | 2017-12-18 | 2018-08-24 | 安徽伊格瑞德电气设备有限公司 | A kind of segmentation fast switching system based on SCR double-bus |
-
2017
- 2017-12-18 CN CN201711366977.5A patent/CN108023350A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0888933A (en) * | 1994-09-14 | 1996-04-02 | Nishishiba Electric Co Ltd | Bus protection system |
| CN201130821Y (en) * | 2007-11-26 | 2008-10-08 | 江苏省电力公司苏州供电公司 | Intelligent control apparatus for energy consumption system |
| CN101741084A (en) * | 2008-11-24 | 2010-06-16 | 苏州凯达电器仪表成套有限公司 | Dual power supply system |
| CN103138171A (en) * | 2013-02-08 | 2013-06-05 | 国家电网公司 | Power electronic transformer substation |
| CN205829289U (en) * | 2016-07-21 | 2016-12-21 | 华自科技股份有限公司 | High pressure undisturbed electric supply installation |
| CN106253461A (en) * | 2016-08-24 | 2016-12-21 | 青岛艾迪森科技股份有限公司 | Novel static switch and control method thereof |
| CN207765957U (en) * | 2017-12-18 | 2018-08-24 | 安徽伊格瑞德电气设备有限公司 | A kind of segmentation fast switching system based on SCR double-bus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711187A (en) * | 2020-06-04 | 2020-09-25 | 广东创电科技有限公司 | Double-bus power supply system and control method |
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