CN208046310U - One kind shaking dual power supply undisturbed fast switching system based on LC - Google Patents
One kind shaking dual power supply undisturbed fast switching system based on LC Download PDFInfo
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- CN208046310U CN208046310U CN201820438754.9U CN201820438754U CN208046310U CN 208046310 U CN208046310 U CN 208046310U CN 201820438754 U CN201820438754 U CN 201820438754U CN 208046310 U CN208046310 U CN 208046310U
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- triode thyristor
- bidirectional triode
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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
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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
- 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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Abstract
The utility model is related to one kind shaking dual power supply undisturbed fast switching system based on LC, including bidirectional triode thyristor SCR1, SCR2, SCR3, high-speed eddy switch K1, K2, capacitor C, linear resistance FR and reactor L, the end of incoming cables of the bidirectional triode thyristor SCR2 is connect with main power source, the end of incoming cables of the bidirectional triode thyristor SCR3 is connect with stand-by power supply, the bidirectional triode thyristor SCR2, the leading-out terminal of SCR3 is connect with the end of incoming cables of capacitor C, the leading-out terminal of the capacitor C is connect with the end of incoming cables of bidirectional triode thyristor SCR1, the leading-out terminal of the bidirectional triode thyristor SCR1 is connected by reactor L and load.It is described in the utility model that dual power supply undisturbed fast switching system is shaken based on LC, simple in structure, switch speed is soon, securely and reliably, when I voltage of main power source fluctuates, seriously affect the normal operation of sensitive loads, it can be switched in 4ms on stand-by power supply II, it realizes sensitive loads uninterrupted power supply, ensures sensitive loads continuous operation.
Description
Technical field
The utility model is related to the fast incision technology fields of electric network source, and in particular to one kind shaking dual power supply undisturbed based on LC
Fast switching system.
Background technology
The internal electric network of large and medium-sized enterprise（Abbreviation Intranet）And national grid（Abbreviation outer net）It is connected, forms power supply 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 is made breaker jump 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, some to be referred to as " shaking electricity " in different industries, and some is referred to as " dead electricity ", or " shakings ", " suddenly
Drop " etc..
Currently, 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 20mS or more or having a power failure in short-term（Power off time
≤2,5S）, the accidents such as motor speed decline or stalling, frequency converter are shut down, relay protection acts can be caused, cause to produce wave
Dynamic, operation confusion, less serious case cause product quality accident, hundreds of thousands, millions of economic losses, severe one are caused even to cause great peace
Full accident brings huge economic loss and severe social influence to enterprise.
The switching device that existing market uses all is to carry out dead electricity switching by coil adhesive armature, and this switching device needs
It wants Voltage Drop that could be switched successfully to 50% or less, and switching time is longer, cannot be satisfied the continuity fortune of sensibility load
Row, the device that active demand is a kind of to be quick on the draw, switch speed is fast solve current problems faced.
Utility model content
The purpose of this utility model is to provide one kind shaking dual power supply undisturbed fast switching system based on LC, by cutting
Power supply is changed, realizes sensitive loads uninterrupted power supply, ensures sensitive loads continuous operation.
To achieve the above object, the utility model uses following technical scheme：
One kind shaking dual power supply undisturbed fast switching system, including bidirectional triode thyristor SCR1, SCR2, SCR3 based on LC,
High-speed eddy switch K1, K2, capacitor C, linear resistance FR and reactor L, the end of incoming cables of the bidirectional triode thyristor SCR2 and master
Power supply connects, and the end of incoming cables of the bidirectional triode thyristor SCR3 is connect with stand-by power supply, and described bidirectional triode thyristor SCR2, SCR3's goes out
Line end is connect with the end of incoming cables of capacitor C, and the leading-out terminal of the capacitor C is connect with the end of incoming cables of bidirectional triode thyristor SCR1,
The leading-out terminal of the bidirectional triode thyristor SCR1 is connected by reactor L and load.
Further, further include nonlinear resistance FR, the nonlinear resistance FR is connected in parallel on the both ends of the capacitor C.
Further, the first electrode of the bidirectional triode thyristor SCR2 is connect with main power source, and the of bidirectional triode thyristor SCR3
One electrode is connect with stand-by power supply, and the second electrode of the bidirectional triode thyristor SCR2 connects with the second electrode of bidirectional triode thyristor SCR3
Connect, the first electrode of the bidirectional triode thyristor SCR1 and the leading-out terminal of capacitor C connect, the second electrode of bidirectional triode thyristor SCR1 with
The end of incoming cables of reactor L connects；Controller connection in the control terminal and power distribution cabinet of described bidirectional triode thyristor SCR2, SCR3, leads to
It crosses controller and controls it and cut-off.
Further, the capacitor C, nonlinear resistance FR, controllable silicon SCR 1, SCR2, SCR3, reactor L are used for shape
At high frequency oscillation, faulty line electric current is made to shift to an earlier date zero passage.
Further, described high-speed eddy switch K1, K2 are all made of vacuum extinction formula breaker, are matched by being mounted on
Controller in electric cabinet controls it and cut-offs.
As shown from the above technical solution, described in the utility model be switched fast based on LC concussion dual power supply undisturbeds is
System, simple in structure, switch speed soon, securely and reliably, when I voltage of main power source fluctuates, are seriously affecting sensitive loads just
Often operation, can be switched on stand-by power supply II in 4ms, realize sensitive loads uninterrupted power supply, ensure that sensitive loads are continuously transported
Row.
Description of the drawings
Fig. 1 is the electrical schematic diagram of the utility model.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings：
As shown in Figure 1, the present embodiment shakes dual power supply undisturbed fast switching system, including bidirectional triode thyristor based on LC
SCR1, SCR2, SCR3, high-speed eddy switch K1, K2, capacitor C, linear resistance FR and reactor L, bidirectional triode thyristor SCR2's
First electrode is connect with main power source, and the first electrode of bidirectional triode thyristor SCR3 is connect with stand-by power supply, bidirectional triode thyristor SCR2,
The second electrode of SCR3 is connect with the end of incoming cables of capacitor C, the leading-out terminal of capacitor C and the first electricity of bidirectional triode thyristor SCR1
Pole connects, and the second electrode of bidirectional triode thyristor SCR1 is connected by reactor L and load, is parallel at the both ends of capacitor C non-
Linear resistance FR.
The control terminal of the bidirectional triode thyristor SCR1, SCR2, SCR3 are connect with the controller in power distribution cabinet, pass through controller
It is controlled to cut-off.High-speed eddy switch K1, high-speed eddy switch K2, controllable silicon SCR 1, SCR2, SCR3, capacitor C are non-linear
Resistance FR, reactor L are installed in power distribution cabinet.
High-speed eddy switch K1, K2 of the present embodiment are all made of vacuum extinction formula breaker, and high-speed eddy switch K1, K2 is equal
It is controlled by the controller in power distribution cabinet to cut-off.
The operation principle of the utility model is as follows：When sensitive loads are run, when I voltage of working power fluctuates, sternly
Ghost image rings the normal operation of sensitive loads, and high-speed eddy switch K1 separating brakes are controlled by controller, and high-speed eddy switch K2 closes a floodgate,
Load is switched to power supply II；Capacitor C, nonlinear resistance FR, controllable silicon SCR 1, SCR2, SCR3, reactor L are used to form
High frequency oscillation makes faulty line electric current shift to an earlier date zero passage.After detecting that I voltage of power supply restores, controller control high-speed eddy is opened
K2 separating brakes are closed, high-speed eddy switch K1 closes a floodgate, load voltage is switched on power supply I, realizes sensitive loads uninterrupted power supply, protects
Demonstrate,prove sensitive loads continuous operation.
Embodiment described above is only that preferred embodiments of the present invention are described, not to this practicality
Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this
The various modifications and improvement that the technical solution of utility model is made should all fall into the protection of the utility model claims book determination
In range.
Claims (5)
1. one kind shaking dual power supply undisturbed fast switching system based on LC, it is characterised in that：Including bidirectional triode thyristor SCR1,
SCR2, SCR3, high-speed eddy switch K1, K2, capacitor C, linear resistance FR and reactor L, the bidirectional triode thyristor SCR2's
End of incoming cables is connect with main power source, and the end of incoming cables of the bidirectional triode thyristor SCR3 is connect with stand-by power supply, the bidirectional triode thyristor
The leading-out terminal of SCR2, SCR3 are connect with the end of incoming cables of capacitor C, leading-out terminal and the bidirectional triode thyristor SCR1 of the capacitor C
End of incoming cables connection, the leading-out terminal of the bidirectional triode thyristor SCR1 passes through reactor L and connected with load.
2. according to claim 1 shake dual power supply undisturbed fast switching system based on LC, it is characterised in that：Further include
Nonlinear resistance FR, the nonlinear resistance FR are connected in parallel on the both ends of the capacitor C.
3. according to claim 1 shake dual power supply undisturbed fast switching system based on LC, it is characterised in that：It is described double
It is connect to the first electrode of controllable silicon SCR 2 with main power source, the first electrode of bidirectional triode thyristor SCR3 is connect with stand-by power supply, institute
The second electrode for stating bidirectional triode thyristor SCR2 is connect with the second electrode of bidirectional triode thyristor SCR3, the bidirectional triode thyristor SCR1's
First electrode and the leading-out terminal of capacitor C connect, and the second electrode of bidirectional triode thyristor SCR1 is connect with the end of incoming cables of reactor L；Institute
The controller connection in the control terminal and power distribution cabinet of bidirectional triode thyristor SCR1, SCR2, SCR3 is stated, it is controlled by controller and is opened
It is disconnected.
4. according to claim 1 shake dual power supply undisturbed fast switching system based on LC, it is characterised in that：The electricity
Container C, nonlinear resistance FR, controllable silicon SCR 1, SCR2, SCR3, reactor L are used to form high frequency oscillation, keep faulty line electric
Stream shifts to an earlier date zero passage.
5. according to claim 1 shake dual power supply undisturbed fast switching system based on LC, it is characterised in that：The height
Speed vortex switch K1, K2 are all made of vacuum extinction formula breaker, and controlling it by the controller in power distribution cabinet opens
It is disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820438754.9U CN208046310U (en) | 2018-03-29 | 2018-03-29 | One kind shaking dual power supply undisturbed fast switching system based on LC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820438754.9U CN208046310U (en) | 2018-03-29 | 2018-03-29 | One kind shaking dual power supply undisturbed fast switching system based on LC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208046310U true CN208046310U (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820438754.9U Active CN208046310U (en) | 2018-03-29 | 2018-03-29 | One kind shaking dual power supply undisturbed fast switching system based on LC |
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| CN (1) | CN208046310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560604A (en) * | 2019-01-04 | 2019-04-02 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of power supply rapid switching device |
| CN109687570A (en) * | 2018-12-17 | 2019-04-26 | 国网北京市电力公司 | One kind zero flashes low-voltage distribution system and operating method |
-
2018
- 2018-03-29 CN CN201820438754.9U patent/CN208046310U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687570A (en) * | 2018-12-17 | 2019-04-26 | 国网北京市电力公司 | One kind zero flashes low-voltage distribution system and operating method |
| CN109687570B (en) * | 2018-12-17 | 2021-03-02 | 国网北京市电力公司 | Zero-flicker low-voltage power distribution system and operation method |
| CN109560604A (en) * | 2019-01-04 | 2019-04-02 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of power supply rapid switching device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211011 Address after: 230088 No. 26 Acacia Road, hi tech Zone, Anhui, Hefei Patentee after: ANHUI HUIDIAN TECHNOLOGY Co.,Ltd. Address before: 230088 No. 26 Acacia Road, hi tech Zone, Anhui, Hefei Patentee before: ANHUI SHANGTU ELECTRIC POWER PROTECTIVE APPARATUS Co.,Ltd. |
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| TR01 | Transfer of patent right |