CN202353208U - Three-phase-line phase-line switching device capable of avoiding inter-phase short circuit - Google Patents
Three-phase-line phase-line switching device capable of avoiding inter-phase short circuit Download PDFInfo
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- CN202353208U CN202353208U CN2011204965462U CN201120496546U CN202353208U CN 202353208 U CN202353208 U CN 202353208U CN 2011204965462 U CN2011204965462 U CN 2011204965462U CN 201120496546 U CN201120496546 U CN 201120496546U CN 202353208 U CN202353208 U CN 202353208U
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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
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The utility model discloses a three-phase-line phase-line switching device capable of avoiding inter-phase short circuit, and belongs to the field of power transformation and distribution devices. The three-phase-line phase-line switching device comprises a phase-change switch shell with a three-phase and four-line main power input end and a single-phase main power output end; the phase-change switch shell is internally provided with a phase-line switching switch and a self-resetting single-phase switch; the power input end of the phase-line switching switch is respectively and correspondingly connected with three phase lines of a three-phase power supply; the output end of the phase-line switching switch is correspondingly connected with an input line of a power phase line of the self-resetting single-phase switch; and the output end of the power phase line of the single-phase switch is provided with a current transformer for monitoring load current. The three-phase-line phase-line switching device has the advantages that since the rotary switching mode with selection of one from more is adopted and the connection of the three-phase-line phase-line switching device with a load end is cut off in the switching process, the condition of short circuit of two phase lines when the phase-change switch fails is thoroughly avoided, the whole switching process is safe and reliable, and the safety of power-supply operation is improved. The three-phase-line phase-line switching device can be widely used for the fields of low-voltage power supply and power-grid operation.
Description
Technical field
The utility model belongs to change power distribution equipment field, relates in particular to a kind of alternate load balancing assigned unit of three-phase power line that is used to make.
Background technology
Make as a whole electric power system; In its three-phase power line; The equilibrium of loading between each phase line distributes ten minutes to be necessary; The phase line current balance problem that this not only relates to three-phase power line also relates to the problem of many aspects such as the economical operation that reduces line loss, electrical network and safety.
Because the imbalance of electric power system three-phase load, a certain phase load is bigger than normal, and line loss is increased.Simultaneously, this phase circuit is worked under big load, both can influence the security of operation of transformer, has reduced the power supply capacity of transformer again.
So the equilibrium of phase specific electric load distributes in the three-phase power line, to economy, the safe operation of whole power distribution network, and the reliability that guarantees controller switching equipment, all be very crucial.
The day for announcing is on 05 18th, 2011, and notification number is the Chinese utility model patent of CN201839007U, discloses a kind of " remote control phase place automatic transfer switch ", its in diverter switch, be provided with three separate and have a single-phase switch of interlock; The corresponding connection of three phase lines of each single-phase switch power input and three-phase line, the output parallel connection of each single-phase switch; A current transformer is set in its lower end; Electronic module is set on diverter switch; The output of load current instrument transformer is connected with the monitor signal input of electronic module; The corresponding successively connection of control end of the control signal output ends of electronic module and three single-phase switch branch/contacting controling circuits or module; The monitor signal output and the signal input end of electronic module are connected with centralized-control center through wireless network or carrier line.It can also remote control switch the phase sequence at a certain single-phase load circuit place between the three phase mains of supply line except having earth leakage protective and excess current protective function, help realizing that the equilibrium of each alternate load distributes.
Technique scheme can realize the switching of a certain single-phase load between each phase line of three-phase power line smoothly, has also solved the automation issues of line load adjustment, and the equilibrium that helps to realize each alternate load automatically distributes, and is convenient to remote operation.
But, in this technical scheme, the power input of three single-phase switchs respectively with the corresponding connection of three phase lines of three phase mains, the output parallel connection of three single-phase switchs, corresponding connection with the load side power input line.Sort circuit connected mode and control model; Still the situation that can not fundamentally avoid two phase lines to connect simultaneously in case switch breaks down, causes two phase lines to connect when being short-circuited simultaneously; Just can cause accident of power supply, so its security reliability still awaits further improvement.
The utility model content
The utility model technical problem to be solved provides a kind of three-phase line phase line switching device shifter of avoiding phase fault; It adopts the rotation switching mode of " multiselect one "; And break itself and being connected of load side at handoff procedure; Whole handoff procedure is safe and reliable, and the situation of two phase line short circuits takes place when thoroughly having avoided the phase-change switch device to break down.
The technical scheme of the utility model is: a kind of three-phase line phase line switching device shifter of avoiding phase fault is provided, comprises the phase-change switch housing of the main power source input that has three-phase and four-line and single-phase main power source output, it is characterized in that:
A phase line diverter switch and one are set from resetting single-phase switch in the housing of phase-change switch, the power input of phase line diverter switch respectively with the corresponding connection of three phase lines of three phase mains; The output of phase line diverter switch with from resetting the corresponding connection of power supply phase line incoming line of single-phase switch; The power supply phase line output terminal of single-phase switch is provided with a current transformer that is used to monitor load current;
In the phase-change switch housing or on the phase-change switch housing, setting comprises from resetting " energising "/" outage " the operational order generation functional circuit of single-phase switch " disconnection "/" connection " and diverter switch motor and the electronic module of wireless network or carrier signal teletransmission/receiving module circuit;
The control signal output ends of said electronic module is with the corresponding successively connection of control end of " energising " or " outage " control circuit module of the single-phase switch that resets certainly " disconnection " or " connection " and diverter switch motor;
The monitor signal output and the signal input end of electronic module are connected with centralized-control center through wireless network or carrier line.
Further, described phase line diverter switch is an electrodynamic type rotation diverter switch.
Described electronic module comprises single-chip microcomputer or industrial computer modular circuit.
Described electronic module also comprises electric current, voltage, leakage current detect and defencive function circuit.
Compare with prior art, the utility model has the advantages that:
1. adopt the rotation switching mode of " three select ", under any circumstance can only connect a phase line, the situation of two phase line short circuits takes place in the time of can thoroughly avoiding phase-change switch to break down; Adopt the switching mode and the circuit connection mode of " first deenergization output; carry out again switching between input three phase mains phase line "; Whole handoff procedure is under no load condition, to switch; The phenomenon of striking sparks in the dynamic and static contact contact process in the time of can avoiding switching, thereby the fail safe that has improved powered operation more;
2. can be according to the line load change in current; Binding data teletransmission and telecontrol engineering again; The remote control single-phase switch breaks off and diverter switch switches to load on other phase lines; Solved the automation issues of line load adjustment, and made the adjustment of line load realize promptness, also can monitor and protect simultaneously electric current, voltage and electric leakage;
3. whole commutation apparatus structure is simple, and reliable in action is economical and practical, is convenient to remote operation, and the equilibrium that helps to realize each alternate load automatically distributes.
Description of drawings
Fig. 1 is the circuit module structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Among Fig. 1, in the housing 1 of phase-change switch, be provided with a phase line diverter switch 2 and one from resetting single-phase switch 3, the power input of diverter switch respectively with the corresponding connection of three phase lines of three phase mains, the three-phase power input end 5 of formation phase-change switch.
The output of phase line diverter switch with from resetting the corresponding connection of power input line of single-phase switch; The power output end of phase line diverter switch is as the power supply phase line input of single-phase switch, and the power supply phase line output terminal of single-phase switch is as the power supply phase line output terminal 4 of phase-change switch.
The power supply phase line output terminal 4 of diverter switch is provided with a current transformer L who is used to monitor load current.
In the phase-change switch housing or on the phase-change switch housing, setting comprises from resetting " energising "/" outage " the operational order generation functional circuit of single-phase switch " disconnection "/" connection " and diverter switch motor and the electronic module of wireless network or carrier signal teletransmission/receiving module circuit;
The control signal output ends of said electronic module is with the corresponding successively connection of control end of " energising " or " outage " control circuit module of the single-phase switch that resets certainly " disconnection " or " connection " and diverter switch motor;
The monitor signal output and the signal input end of electronic module are connected with centralized-control center through wireless network or carrier line.
Concrete, described phase line diverter switch is an electrodynamic type rotation diverter switch.
In the phase-change switch housing or on the phase-change switch housing, be provided with electronic module 6; Described electronic module comprises single-chip microcomputer or industrial computer modular circuit.
Described electronic module also comprises electric current, voltage, leakage current detect and defencive function circuit.
Can know that by figure the output of load current instrument transformer is connected with the monitor signal input of electronic module.
The control signal output ends of electronic module and " connection " of reset certainly single-phase switch " separating brake "/" combined floodgate " control end and phase line diverter switch motor and control end corresponding successively connection of difference of " disconnection " control circuit module.
The monitor signal output and the signal input end of electronic module through wireless network or carrier line, are connected with centralized-control center.
Above-mentioned commutation functional circuit is guaranteed when phase-change switch carries out commutation; At first single-phase switch is carried out " opening/break off " operation; Then, switch on the phase line of appointment, again single-phase switch is carried out " closure/connection " operation again by motor drives diverter switch slide plate.
The single-phase load (not shown) is connected with the power output end of phase-change switch, and the slide plate of process diverter switch is connected with a certain phase line in the three phase mains, from said three phase mains, obtains single phase poaer supply.
Electronic module partly adopts prior art to get final product, and no specific (special) requirements is so its concrete circuit is no longer narrated at this.
Because the present technique scheme is to apply for before this and the notification number of obtaining the authorization is the further improvement on the basis of Chinese utility model patent of CN201839007U that the applicant it is no longer narrated at this with the identical place of a last technical scheme.
Because electronic diverter switch adopts the switching mode of " multiselect one " (among figure be example with " three select one "); Its fixed contact respectively with the corresponding connection of three phase lines of three phase mains; Its moving contact rotates under the driving of motor/moves; Contact with each fixed contact successively, so the situation of two phase line short circuits, the fail safe that has improved powered operation take place can thoroughly avoid switch to break down the time.
Output in electronic diverter switch is connected in series one from the homing position type single-phase switch; In handoff procedure, break off load side earlier; Can guarantee in the whole handover operation that handoff procedure is the switching under no load condition, the phenomenon of striking sparks in the dynamic and static contact contact process in the time of can avoiding switching on the one hand; Also can further guarantee on the other hand in handoff procedure, to prevent between the three-phase phase line of power end phase fault to take place.
The summary of this device course of work:
The size of current of current transformer monitoring load; By the wireless network in the electronic module or carrier line with the teletransmission of load current value to centralized-control center; Through computer/industrial computer and monitoring/Control Software thereof; Send the adjusting/equilibrium instruction of loading between the three-phase power line by centralized-control center, output needle is to " disconnection " or " connection " of single-phase switch and " energising " or " outage " operating control signal of diverter switch motor.
" energising " of " disconnection " of its single-phase switch or " connection " and diverter switch motor or " outage " operating control signal transfer to electronic module via wireless network or carrier line.
After wireless network or carrier signal teletransmission/receiving module circuit receive the load phase place adjustment instruction by the centralized-control center computer platform; Operational order modular circuit in the electronic module; " disconnection " or " connection " and " energising " or " outage " operating control signal of diverter switch motor of output single-phase switch; Make corresponding switch step; Realize telemechanical, remote control, the adjustment in real time of three-phase load, realize the switching of a certain single-phase load between each phase line of three-phase power line smoothly, realize that automatically the equilibrium of each alternate load distributes.
Because the utility model technical scheme has adopted the rotation switching mode of " multiselect one "; And break itself and being connected of load side at handoff procedure; The situation of two phase line short circuits takes place when thoroughly having avoided phase-change switch to break down; Whole handoff procedure is safe and reliable, has improved the fail safe of powered operation.
The utility model can be widely used in low-voltage power supply and power network operation field.
Claims (4)
1. the three-phase line phase line switching device shifter that can avoid phase fault comprises it is characterized in that the phase-change switch housing of the main power source input that has three-phase and four-line and single-phase main power source output:
A phase line diverter switch and one are set from resetting single-phase switch in the housing of phase-change switch, the power input of phase line diverter switch respectively with the corresponding connection of three phase lines of three phase mains; The output of phase line diverter switch with from resetting the corresponding connection of power supply phase line incoming line of single-phase switch; The power supply phase line output terminal of single-phase switch is provided with a current transformer that is used to monitor load current;
In the phase-change switch housing or on the phase-change switch housing, setting comprises from resetting " energising "/" outage " the operational order generation functional circuit of single-phase switch " disconnection "/" connection " and diverter switch motor and the electronic module of wireless network or carrier signal teletransmission/receiving module circuit;
The control signal output ends of said electronic module is with the corresponding successively connection of control end of " energising " or " outage " control circuit module of the single-phase switch that resets certainly " disconnection " or " connection " and diverter switch motor;
The monitor signal output and the signal input end of electronic module are connected with centralized-control center through wireless network or carrier line.
2. according to the described three-phase line phase line switching device shifter of avoiding phase fault of claim 1, it is characterized in that described phase line diverter switch is an electrodynamic type rotation diverter switch.
3. according to the described three-phase line phase line switching device shifter of avoiding phase fault of claim 1, it is characterized in that described electronic module comprises single-chip microcomputer or industrial computer modular circuit.
4. according to the described three-phase line phase line switching device shifter of avoiding phase fault of claim 1, it is characterized in that described electronic module comprises electric current, voltage, leakage current detect and defencive function circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204965462U CN202353208U (en) | 2011-12-03 | 2011-12-03 | Three-phase-line phase-line switching device capable of avoiding inter-phase short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204965462U CN202353208U (en) | 2011-12-03 | 2011-12-03 | Three-phase-line phase-line switching device capable of avoiding inter-phase short circuit |
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| Publication Number | Publication Date |
|---|---|
| CN202353208U true CN202353208U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204965462U Expired - Fee Related CN202353208U (en) | 2011-12-03 | 2011-12-03 | Three-phase-line phase-line switching device capable of avoiding inter-phase short circuit |
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| Country | Link |
|---|---|
| CN (1) | CN202353208U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130010A (en) * | 2015-03-22 | 2016-11-16 | 西安科技大学 | Coal Mining Power Distribution System Dynamic Simulation Method |
| CN107147113A (en) * | 2017-06-05 | 2017-09-08 | 泰豪科技股份有限公司 | A kind of phase change method and device without phase fault |
-
2011
- 2011-12-03 CN CN2011204965462U patent/CN202353208U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130010A (en) * | 2015-03-22 | 2016-11-16 | 西安科技大学 | Coal Mining Power Distribution System Dynamic Simulation Method |
| CN106130010B (en) * | 2015-03-22 | 2018-11-13 | 西安科技大学 | Coal Mining Power Distribution System Dynamic Simulation Method |
| CN107147113A (en) * | 2017-06-05 | 2017-09-08 | 泰豪科技股份有限公司 | A kind of phase change method and device without phase fault |
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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: 20120725 Termination date: 20151203 |
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| EXPY | Termination of patent right or utility model |