CN102355048A - Intelligent dual-power automatic transfer switch and running method - Google Patents
Intelligent dual-power automatic transfer switch and running method Download PDFInfo
- Publication number
- CN102355048A CN102355048A CN2011102769448A CN201110276944A CN102355048A CN 102355048 A CN102355048 A CN 102355048A CN 2011102769448 A CN2011102769448 A CN 2011102769448A CN 201110276944 A CN201110276944 A CN 201110276944A CN 102355048 A CN102355048 A CN 102355048A
- Authority
- CN
- China
- Prior art keywords
- power supply
- voltage
- chip microcomputer
- frequency
- voltage signal
- 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.)
- Granted
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses an intelligent dual-power automatic transfer switch, which relates to a loop device with an automatic conversion function for disconnecting a distribution system from a normal power supply and connecting the distribution system with a standby power supply. The switch comprises a control part and an execution part. The control part mainly comprises a singlechip, a voltage transformer, a booster circuit, a photoelectric coupler, a key, a liquid crystal display (LCD) and a chip 74LS164. The execution part mainly comprises a motor, a mechanical interlocking structure and a circuit breaker. In the switch, the control part is formed by taking the singlechip as a core, variations of corresponding voltage and frequency parameters of two paths of input power can be automatically detected, logic judgments are made, and when a power supply system has abnormal voltage or frequency, the motor rotates and the mechanical interlocking structure drives the circuit breaker to act to realize the automatic transfer of the power supplies, thereby overcoming the shortcoming that a load circuit cannot be automatically transferred from an abnormal power supply to another normal power supply when the power supply system has the abnormal voltage or frequency in the prior art.
Description
Technical field
Technical scheme of the present invention relates to and is used for distribution system and breaks off and link the loop apparatus that has automatic conversion of stand-by power supply, specifically intelligent duplicate power supply automatic transfer switch and operation method thereof from normal power source.
Background technology
Along with the develop rapidly of Chinese national economy, all trades and professions require increasingly highly to the power supply quality of electric power system and power supply reliability, require to realize continued power, even when breaking down, also can restore electricity as far as possible at short notice.Automatic transfer switch electrical equipment has just arisen at the historic moment; It is grouped into by one or several diverter switch electrical equipment and switch control portion; Can directly detect two-way and insert the variation of relevant parameters such as power source voltage and frequency and carry out logic determines, thereby realize the automatic switchover of power supply, promptly when electric power system goes wrong; Load circuit is automatically switched to another normal power supply from a problem power supply, move continuously with reliably to guarantee important load.
CN 201708542U, CN 201601532U, CN 101567580, CN 201213098 and CN 201623530U have disclosed the mechanical structure of the integral body of double power supply automatic switching switch; CN1632896 discloses the transmission mechanism of double power supply automatic switching switch; The technology of above-mentioned disclosed double power supply automatic switching switch all is the content of machinery; These technology all exist and can not be directly detect two-way automatically and insert the variation of power source voltage and frequency relevant parameter and carry out logic determines; When voltage or frequency anomaly problem appear in electric power system, can not load circuit be automatically switched to the shortcoming of another normal power supply from a problem power supply.
Summary of the invention
Technical problem to be solved by this invention is: intelligent duplicate power supply automatic transfer switch and operation method thereof are provided; With the single-chip microcomputer is that core constitutes control section; Can directly detect two-way automatically inserts the variation of power source voltage and frequency relevant parameter and carries out logic determines; When electric power system went wrong, when voltage or frequency anomaly promptly occurring, motor rotated; Drive the circuit breaker action via the mechanical chain structure; With the automatic switchover of realization power supply, thereby the double power supply automatic switching switch that has overcome prior art is when voltage or frequency anomaly problem appear in electric power system, can not load circuit be automatically switched to the shortcoming of another normal power supply from a problem power supply.
The present invention solves this technical problem the technical scheme that is adopted:
The intelligent duplicate power supply automatic transfer switch; Comprise control section and operating part; Wherein, Control section mainly is made up of single-chip microcomputer, voltage transformer, voltage lifting circuit, photoelectrical coupler, button, LCD display and chip 74LS164, and operating part mainly is made up of motor, mechanical chain structure and circuit breaker; The connected mode of above-mentioned parts is; Be connected with photoelectrical coupler with voltage lifting circuit respectively by single-chip microcomputer; Voltage lifting circuit is connected with voltage transformer respectively again with photoelectrical coupler and forms voltage and frequency collection circuit thus in addition; Link to each other successively with circuit breaker with motor with relay and form motor-drive circuit through triode by single-chip microcomputer; Being linked to each other successively with light-emitting diode in being arranged on LCD display by single-chip microcomputer and chip 74LS164 forms the power supply status indicating circuit, and being linked to each other with button with LCD display by single-chip microcomputer forms human-computer interaction module, and motor drives the circuit breaker action via the mechanical chain structure.
Above-mentioned intelligent duplicate power supply automatic transfer switch, said circuit breaker is the circuit breaker with release of overcurrent, belongs to CB level automatic transfer switch.
Above-mentioned intelligent duplicate power supply automatic transfer switch, said LCD display model is OCMJ48C-3, is a kind of LCD that has character library.
Does above-mentioned intelligent duplicate power supply automatic transfer switch has function software in the said single-chip microcomputer, and its overall procedure is: beginning → initialization → fire-fighting reset? → Y, fire-fighting reset routine → return fire-fighting to reset? N, the detection → dropout of circuit breaker auxiliary signal? → Y, dropout handling procedure → return fire-fighting to reset? N, push button signalling detection preservation → automatically? → Y, automated session → return fire-fighting to reset? N, manual process → return fire-fighting to reset?
Above-mentioned intelligent duplicate power supply automatic transfer switch, the use external power supply provides needed electric power for single-chip microcomputer wherein with other circuit supplies.
Above-mentioned intelligent duplicate power supply automatic transfer switch, related parts all are that the technical staff in present technique field knows and can be purchased acquisition, and the related components and parts and the method for attachment of circuit are that the technical staff in present technique field knows.
The operation method of above-mentioned intelligent duplicate power supply automatic transfer switch; It realizes that the process that power supply automaticallyes switch is: voltage transformer is input to detected two-way power supply voltage signal in the single-chip microcomputer through voltage lifting circuit; Voltage signal through voltage transformer output also is input in the single-chip microcomputer through photoelectrical coupler; Single-chip microcomputer is done following the processing with the voltage signal of input: single-chip microcomputer utilizes its A/D modular converter to adopt constant duration to gather analog voltage signal; Carry out A/D and be converted to the discrete sampling value of some sequences, use the root mean square algorithm obtains to be equivalent to input voltage signal from the sampled value of these sequences effective value then.Voltage transformer also is input in the single-chip microcomputer through photoelectrical coupler detected two-way power source voltage signal simultaneously; Single-chip microcomputer is to being sampled by the two-way power source voltage signal of photoelectrical coupler input; Through timing and calculating; Single-chip microcomputer obtains the effective value and the frequency values of two-way supply voltage, and the effective value and the frequency values information real-time of this two-way supply voltage is presented on the LCD display.The user comes to set immediately or preestablish the effective value and the frequency values of the supply voltage that needs use through the button on the control section.Whether single-chip microcomputer will be monitored in real time has button to press immediately, if having, then carries out parameter setting according to the key command of pressing immediately; If there is not button to press immediately, single-chip microcomputer is the effective value and the frequency values of cycle detection voltage signal then.Single-chip microcomputer is compared the effective value and the frequency values of the supply voltage of current time with the above-mentioned effective value and the frequency values that preestablish the supply voltage that needs use; If the effective value of the supply voltage of current time or the scope that frequency values has exceeded set point, promptly voltage occurs unusually, and single-chip microcomputer sends the power supply switching command; Motor is rotated; Drive circuit breaker disengagement failure power supply via the mechanical chain structure, and switch to another road normal power source, make the realization continued power.
The operation method of above-mentioned intelligent duplicate power supply automatic transfer switch, it realizes that the power supply automatic switchover has following manual work pattern and two kinds of patterns of automatic operation mode:
Manual work pattern is: through moving by the key control operating part, above-mentioned circuit is detained between three states at power supply commonly used, stand-by power supply and two branch again switched;
Automatic operation mode is: the control section of intelligent duplicate power supply automatic transfer switch is monitored power supply commonly used and stand-by power supply at any time; In power supply three-phase commonly used, there are any phase or heterogeneous voltage and frequency abnormal conditions to occur; Even dead electricity, i.e. during the phase failure, through suitable time-delay t
1, confirm that power supply trouble is irreversible, when power supply commonly used can't provide normal power supply, power supply commonly used and break off, pass through t again
2Behind the time delays, stand-by power supply is closed, and this moment, the three-phase voltage of stand-by power supply was normal; After moving a period of time at stand-by power supply, power supply commonly used recovers again just often, and control section is through t
3Delay confirmation power up commonly used is normal, then stand-by power supply is cut off, again through t
4Time-delay will be used the power supply closure always, and this operating process is for hauling oneself willingly into runback; When behind stand-by power supply power supply certain hour, power supply commonly used recovers again normally, and no longer switch to power supply commonly used from stand-by power supply this moment, only when the stand-by power supply fault, switches, and this operating process is for hauling oneself willingly into not runback.
The operation method of above-mentioned intelligent duplicate power supply automatic transfer switch, it realizes that the program that power supply automaticallyes switch is:
The first step; After powering on, general register and special register are carried out initialization, comprising the initialization of the register of timer and A/D conversion; And the initialization of light-emitting diode display; Sample frequency is set, and sample frequency was changeed for second step after initialization is accomplished much larger than the frequency of two-way power supply voltage signal;
Whether second step had dropout through circuit breaker additional alarm input, if occur threading off, then alarm is not threaded off if having, and changes for the 3rd step;
The 3rd step, adopt the peak value detection method that the two-way supply voltage is carried out phase sequence and detect, if the power phase mistake, then alarm if power phase is normal, changeed for the 4th step;
The 4th step, according to sample frequency the two-way power supply voltage signal is gathered, accomplish the sampling of one-period after, the effective value of calculating voltage signal and frequency, and the effective value and the frequency of voltage signal be presented on the liquid crystal display screen changeed for the 5th step;
In the 5th step, whether effective value and the frequency of judging voltage signal be within the permissible variation scope, when voltage effective value or frequency have exceeded the permissible variation scope; Send the power supply switching command; Motor is rotated, drive circuit breaker disengagement failure power supply, realize that power supply switches.
Beneficial effect of the present invention, advantage compared with prior art of the present invention is following:
(1) intelligent duplicate power supply automatic transfer switch of the present invention and operation method thereof had both detected the amplitude of supply voltage, had also measured the frequency of supply voltage, and be unusual if supply frequency occurs, and also can realize automaticallying switch.
(2) intelligent duplicate power supply automatic transfer switch of the present invention is core with the single-chip microcomputer; LCD is with Chinese backlight to show; Touch button operation; Can be to Control Parameter through the button user on the control section: overvoltage, under voltage value, exemplary frequency deviation values and handoff delay be set, and from liquid crystal display screen, can see the setting result, have made things convenient for the monitoring of people to each phase power supply situation.
(3) intelligent duplicate power supply automatic transfer switch of the present invention and operation method handoff delay thereof can be set: when using abnormity of power supply always, power supply switches to two time-delay t1 that divide from power supply commonly used; From two minutes states, switch to the time-delay t2 of stand-by power supply; During unusual the or runback of stand-by power supply, switch to the time-delay t3 of two branch states; From two minutes states, switch to the time-delay t4 of power supply commonly used.
(4) intelligent duplicate power supply automatic transfer switch of the present invention and operation method thereof are cut and are had the automatic recognition function of three-phase phase-sequence.
In a word; It is that core constitutes control section that intelligent duplicate power supply automatic transfer switch of the present invention and operation method thereof are cut with the single-chip microcomputer, can directly detect two-way automatically and insert the variation of power source voltage and frequency relevant parameter and carry out logic determines, when electric power system goes wrong; When voltage or frequency anomaly promptly occurring; Motor rotates, and drives the circuit breaker action via the mechanical chain structure, to realize the automatic switchover of power supply; Thereby the double power supply automatic switching switch that has overcome prior art is when voltage or frequency anomaly problem appear in electric power system, can not load circuit be automatically switched to the shortcoming of another normal power supply from a problem power supply.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is an intelligent duplicate power supply automatic transfer switch composition frame chart of the present invention.
Fig. 2 is an intelligent duplicate power supply automatic transfer switch constituted mode sketch map of the present invention.
Fig. 3 is an intelligent duplicate power supply automatic transfer switch profile diagrammatic side view of the present invention.
Fig. 4 is that the voltage and the frequency collection circuit of intelligent duplicate power supply automatic transfer switch of the present invention constitutes and catenation principle figure.
Fig. 5 is that the motor-drive circuit and the power supply status indicating circuit of intelligent duplicate power supply automatic transfer switch of the present invention constitutes and catenation principle figure.
Fig. 6 is the function software overview flow chart of intelligent duplicate power supply automatic transfer switch of the present invention.
Fig. 7 is the flow chart that intelligent duplicate power supply automatic transfer switch of the present invention is realized the power supply automatic switching program.
Among the figure, 1. single-chip microcomputer, 2. voltage lifting circuit, 3. voltage transformer, 4. photoelectrical coupler, 5. chip 74LS164; 6. light-emitting diode, 7. button, 8.LCD display, 9. triode, 10. relay; 11. motor, 12. mechanical chain structures, 13. circuit breakers, 14. liquid crystal display screens, 15. shells; 16. external power supply socket, 17. two-way outlets, D1. voltage and frequency collection circuit, D2. motor-drive circuit, D3. power supply status indicating circuit.
Embodiment
Embodiment illustrated in fig. 1 showing; Intelligent duplicate power supply automatic transfer switch of the present invention comprises control section and operating part; Wherein, Control section is to be made up of single-chip microcomputer 1, voltage transformer 3, voltage lifting circuit 2, photoelectrical coupler 4, button 7, LCD display 8 and chip 74LS1645, and operating part is to be made up of motor 11, mechanical chain structure 12 and circuit breaker 13.
Embodiment illustrated in fig. 2 showing; The constituted mode of intelligent duplicate power supply automatic transfer switch of the present invention is; Be connected with photoelectrical coupler 4 with voltage lifting circuit 2 respectively by single-chip microcomputer 1; Voltage lifting circuit 2 is connected with voltage transformer 3 respectively again with photoelectrical coupler 4 and forms voltage and frequency collection circuit D1 thus in addition; Being linked to each other successively with motor 11 and circuit breaker 13 with relay 10 through triode 9 by single-chip microcomputer 1 forms motor-drive circuit D2, and being linked to each other successively with light-emitting diode 6 in being arranged on LCD display 8 by single-chip microcomputer 1 and chip 74LS1645 forms power supply status indicating circuit D3.Wherein being linked to each other with button 7 with LCD display 8 by single-chip microcomputer 1 forms human-computer interaction module, and motor 11 drives circuit breaker 13 actions via mechanical chain structure 12.
Embodiment illustrated in fig. 3 showing, the profile of intelligent duplicate power supply automatic transfer switch of the present invention is a cuboid, and shell 15 is provided with button 7, liquid crystal display screen 14, external power supply socket 16 and two-way outlet 17.
Embodiment illustrated in fig. 4 showing, the voltage of intelligent duplicate power supply automatic transfer switch of the present invention and frequency collection circuit D1 comprise single-chip microcomputer 1, voltage transformer 3, photoelectrical coupler 4, channel to channel adapter CD4051, voltage lifting circuit 2 and power supply.They realize that the operation method of voltage and frequency collection effect is: certain analog channel of single-chip microcomputer 1 gating; Suppose gating analog channel 0; The logical analog channel 0 of CD4051B_1, CD4051B_2 and CD4051B_3 will be simultaneously by gating at this moment; Not only realized simulation ground and being connected but also will using power supply A phase voltage always and introduce into digitally through gating, the A phase voltage signal of introducing is input in the single-chip microcomputer 1 through voltage lifting circuit 2, and wherein the VEE of CD4051B_2 and CD4051B_3 holds with-5V and is connected; Can pass through complete AC signal, here-5V produces from negative voltage generator ICL7600.Simultaneously the A phase voltage signal is through also be input in the single-chip microcomputer 1 through CD4051B_1 after the 74LS04 shaping after through photoelectrical coupler 4 after voltage transformer 3 outputs again; Single-chip microcomputer 1 is done following the processing with the voltage signal of input: single-chip microcomputer 1 utilizes its A/D modular converter to adopt constant duration to gather analog voltage signal; Carry out A/D and be converted to the discrete sampling value of some sequences, use the root mean square algorithm obtains to be equivalent to input voltage signal from the sampled value of these sequences effective value then; 1 pair of voltage signal through CD4051B_1 of single-chip microcomputer is sampled, and through timing and calculating, single-chip microcomputer 1 can obtain the frequency values of supply voltage.For the acquisition method of each phase voltage of the B phase C phase voltage of power supply commonly used, stand-by power supply and frequency with the above.
Embodiment illustrated in fig. 5 showing; Formation and the connected mode of the motor-drive circuit D2 of intelligent duplicate power supply automatic transfer switch of the present invention and power supply status indicating circuit D3 are that wherein motor-drive circuit D2 comprises single-chip microcomputer 1, relay 10, triode 9 and motor 11.They realize that the operation method of motor-driven effect is: unusual if voltage occurs, suppose abnormity of power supply commonly used, and single-chip microcomputer 1RD5 port sends high level, makes triode 9T3 conducting, and then makes relay 10 adhesives, and switching to stand-by power supply is motor 11 power supplies; Send high level by single-chip microcomputer 1RD6 port again; Make triode 9T2 conducting, and then make relay 10 adhesives, motor 11 is just changeing the control loop conducting; Motor 11 rotates; Drive circuit breaker 13 disengagement failure power supplys via mechanical chain structure 12, and switch to another road normal power source, make the realization continued power.Power supply status indicating circuit D3 partly comprises single-chip microcomputer 1, chip 74LS1645 and light-emitting diode 6.Their realize that the operation method of power supply status indicative function is: single-chip microcomputer 1 with the power information data latching in chip 74LS1645; When these information of needs output; Chip 74LS1645 adopts and the mode of line output is lighted light-emitting diode display 8; Thereby realized the demonstration of single-chip microcomputer 1 output information, these information comprise current two-way power supply status and power supply switching signal commonly used, trip signal state and stand-by power supply switching signal, trip signal state.
Embodiment illustrated in fig. 6 showing, the function software overall procedure that deposits single-chip microcomputer 1 in the intelligent duplicate power supply automatic transfer switch of the present invention in is: does beginning → initialization → fire-fighting reset? → Y, fire-fighting reset routine → return fire-fighting to reset? N, the detection → dropout of circuit breaker auxiliary signal? → Y, dropout handling procedure → return fire-fighting to reset? N, push button signalling detection preservation → automatically? → Y, automated session → return fire-fighting to reset? N, manual process → return fire-fighting to reset?
Embodiment illustrated in fig. 7 showing, does intelligent duplicate power supply automatic transfer switch of the present invention realize that the flow process of power supply automatic switching program is: beginning → initialization → dropout? → be to thread off and handle → return initialization; Not, is phase sequence detection → phase sequence normal? → not, do not report to the police and show failure cause → return initialization; That voltage detecting and demonstration → voltage are normal? → be to return initialization; Not, need conversion? → not, return initialization; Be drive motors → return initialization.
Constitute the intelligent duplicate power supply automatic transfer switch according to Fig. 2,3,4 and 5 shown devices, the function software that deposits single-chip microcomputer 1 in has function software overall procedure shown in Figure 6.Wherein, used circuit breaker 13 is the circuit breakers with release of overcurrent, belongs to CB level automatic transfer switch; The model of used LCD display 8 is OCMJ48C-3, is a kind of LCD that has character library.This intelligent duplicate power supply automatic transfer switch, the use external power supply provides needed electric power for single-chip microcomputer 1 wherein with other circuit supplies.
The working procedure of the intelligent duplicate power supply automatic transfer switch of present embodiment is; Voltage transformer 3 is input to detected two-way power supply voltage signal in the single-chip microcomputer 1 through voltage lifting circuit 2; Voltage signal through voltage transformer 3 outputs also is input in the single-chip microcomputer 1 through photoelectrical coupler 4; Single-chip microcomputer 1 is done following the processing with the voltage signal of input: single-chip microcomputer 1 utilizes its A/D modular converter to adopt constant duration to gather analog voltage signal; Carry out A/D and be converted to the discrete sampling value of some sequences, use the root mean square algorithm obtains to be equivalent to input voltage signal from the sampled value of these sequences effective value then.Voltage transformer 3 also is input to detected two-way power source voltage signal in the single-chip microcomputer 1 through photoelectrical coupler 4 simultaneously; 1 pair of two-way power source voltage signal by photoelectrical coupler 4 inputs of single-chip microcomputer is sampled; Through timing and calculating; Single-chip microcomputer 1 obtains two-way power source voltage value and frequency values, and the effective value and the frequency values information real-time of this two-way supply voltage is presented on the LCD display 8.The user sets or preestablishes the effective value and the frequency values of the supply voltage that needs use immediately through the button on the control section 7.Whether single-chip microcomputer 1 will be monitored in real time has button 7 to press immediately, if having, then carries out parameter setting according to the key command of pressing immediately; If there is not button 7 to press immediately, the effective value and the frequency values of 1 cycle detection voltage signal of single-chip microcomputer.Single-chip microcomputer 1 is compared the effective value and the frequency values of the supply voltage of current time with the above-mentioned effective value and the frequency values that preestablish the supply voltage that needs use; If the effective value of the supply voltage of current time or the scope that frequency values has exceeded set point, promptly voltage occurs unusually, and single-chip microcomputer 1 sends the power supply switching command; Motor 11 is rotated; Drive circuit breaker 13 disengagement failure power supplys via mechanical chain structure 12, and switch to another road normal power source, make the realization continued power.
The operation method of the intelligent duplicate power supply automatic transfer switch of present embodiment, it realizes that the power supply automatic switchover has following manual work pattern and two kinds of patterns of automatic operation mode:
Manual work pattern is: move through button 7 control operating parts, above-mentioned circuit is detained between three states at power supply commonly used, stand-by power supply and two branch again switched;
Automatic operation mode is: the control section of intelligent duplicate power supply automatic transfer switch is monitored power supply commonly used and stand-by power supply at any time; In power supply three-phase commonly used, there are any phase or heterogeneous voltage and frequency abnormal conditions to occur; Even dead electricity, i.e. during the phase failure, through suitable time-delay t
1, confirm that power supply trouble is irreversible, when power supply commonly used can't provide normal power supply, power supply commonly used and break off, pass through t again
2Behind the time delays, stand-by power supply is closed, and this moment, the three-phase voltage of stand-by power supply was normal; After moving a period of time at stand-by power supply, power supply commonly used recovers again just often, and control section is through t
3Delay confirmation power up commonly used is normal, then stand-by power supply is cut off, again through t
4Time-delay will be used the power supply closure always, and this operating process is for hauling oneself willingly into runback; When behind stand-by power supply power supply certain hour, power supply commonly used recovers again normally, and no longer switch to power supply commonly used from stand-by power supply this moment, only when the stand-by power supply fault, switches, and this operating process is for hauling oneself willingly into not runback.
The operation method of the intelligent duplicate power supply automatic transfer switch of present embodiment, it realizes that the program that power supply automaticallyes switch is:
The first step; After powering on, general register and special register are carried out initialization, comprising the initialization of the register of timer and A/D conversion; And the initialization of light-emitting diode display 8; Sample frequency is set, and sample frequency was changeed for second step after initialization is accomplished much larger than the frequency of two-way power supply voltage signal;
Whether second step had dropout through circuit breaker additional alarm input, if occur threading off, then alarm is not threaded off if having, and changes for the 3rd step;
The 3rd step, adopt the peak value detection method that the two-way supply voltage is carried out phase sequence and detect, if the power phase mistake, then alarm if power phase is normal, changeed for the 4th step;
The 4th step, according to sample frequency the two-way power supply voltage signal is gathered, accomplish the sampling of one-period after, the effective value of calculating voltage signal and frequency, and the effective value and the frequency of voltage signal be presented on the liquid crystal display screen 14 changeed for the 5th step;
In the 5th step, whether effective value and the frequency of judging voltage signal be within the permissible variation scope, when voltage effective value or frequency have exceeded the permissible variation scope; Send the power supply switching command; Motor 11 is rotated, drive circuit breaker 13 disengagement failure power supplys, realize that power supply switches.
Claims (5)
1. intelligent duplicate power supply automatic transfer switch; It is characterized in that: comprise control section and operating part; Wherein, Control section mainly is made up of single-chip microcomputer, voltage transformer, voltage lifting circuit, photoelectrical coupler, button, LCD display and chip 74LS164, and operating part mainly is made up of motor, mechanical chain structure and circuit breaker; The connected mode of above-mentioned parts is; Be connected with photoelectrical coupler with voltage lifting circuit respectively by single-chip microcomputer; Voltage lifting circuit is connected with voltage transformer respectively again with photoelectrical coupler and forms voltage and frequency collection circuit thus in addition; Link to each other successively with circuit breaker with motor with relay and form motor-drive circuit through triode by single-chip microcomputer; Being linked to each other successively with light-emitting diode in being arranged on LCD display by single-chip microcomputer and chip 74LS164 forms the power supply status indicating circuit, and being linked to each other with button with LCD display by single-chip microcomputer forms human-computer interaction module, and motor drives the circuit breaker action via the mechanical chain structure.
2. according to the said intelligent duplicate power supply automatic transfer switch of claim 1, it is characterized in that: said circuit breaker is the circuit breaker with release of overcurrent, belongs to CB level automatic transfer switch.
3. according to the said intelligent duplicate power supply automatic transfer switch of claim 1, it is characterized in that: said LCD display model is OCMJ48C-3, is a kind of LCD that has character library.
Does 4. according to the said intelligent duplicate power supply automatic transfer switch of claim 1, it is characterized in that: have function software in the said single-chip microcomputer, its overall procedure is: beginning → initialization → fire-fighting reset? → Y, fire-fighting reset routine → return fire-fighting to reset? N, the detection → dropout of circuit breaker auxiliary signal? → Y, dropout handling procedure → return fire-fighting to reset? N, push button signalling detection preservation → automatically? → Y, automated session → return fire-fighting to reset? N, manual process → return fire-fighting to reset?
5. the operation method of the said intelligent duplicate power supply automatic transfer switch of claim 1 is characterized in that:
Realize that the process that power supply automaticallyes switch is: voltage transformer is input to detected two-way power supply voltage signal in the single-chip microcomputer through voltage lifting circuit; Voltage signal through voltage transformer output also is input in the single-chip microcomputer through photoelectrical coupler; Single-chip microcomputer is done following the processing with the voltage signal of input: single-chip microcomputer utilizes its A/D modular converter to adopt constant duration to gather analog voltage signal; Carry out A/D and be converted to the discrete sampling value of some sequences, use the root mean square algorithm obtains to be equivalent to input voltage signal from the sampled value of these sequences effective value then; Voltage transformer also is input in the single-chip microcomputer through photoelectrical coupler detected two-way power source voltage signal simultaneously; Single-chip microcomputer is to being sampled by the two-way power source voltage signal of photoelectrical coupler input; Through timing and calculating; Single-chip microcomputer obtains the effective value and the frequency values of two-way supply voltage, and the effective value and the frequency values information real-time of this two-way supply voltage is presented on the LCD display; The user comes to set immediately or preestablish the effective value and the frequency values of the supply voltage that needs use through the button on the control section; Whether single-chip microcomputer will be monitored in real time has button to press immediately, if having, then carries out parameter setting according to the key command of pressing immediately; If there is not button to press immediately, single-chip microcomputer is the effective value and the frequency values of cycle detection voltage signal then; Single-chip microcomputer is compared the effective value and the frequency values of the supply voltage of current time with the above-mentioned effective value and the frequency values that preestablish the supply voltage that needs use; If the effective value of the supply voltage of current time or the scope that frequency values has exceeded set point, promptly voltage occurs unusually, and single-chip microcomputer sends the power supply switching command; Motor is rotated; Drive circuit breaker disengagement failure power supply via the mechanical chain structure, and switch to another road normal power source, make the realization continued power.
Realize that the power supply automatic switchover has following manual work pattern and two kinds of patterns of automatic operation mode:
Manual work pattern is: through moving by the key control motor drive mechanism, above-mentioned circuit is detained between three states at power supply commonly used, stand-by power supply and two branch again switched;
Automatic operation mode is: the control section of intelligent duplicate power supply automatic transfer switch is monitored power supply commonly used and stand-by power supply at any time, in power supply three-phase commonly used, has any phase or heterogeneous voltage and frequency abnormal conditions to occur, even dead electricity; When being the phase failure; Through suitable time-delay t1, confirm that power supply trouble is irreversible, when power supply commonly used can't provide normal power supply; Being about to power supply commonly used breaks off; After passing through the t2 time delays again, stand-by power supply is closed, and this moment, the three-phase voltage of stand-by power supply was normal; After moving a period of time at stand-by power supply, power supply commonly used recovers again just often, and controller is normal through t3 delay confirmation power up commonly used, then stand-by power supply is cut off, and will use the power supply closure always through the t4 time-delay again, and this operating process is for hauling oneself willingly into runback; When behind stand-by power supply power supply certain hour, power supply commonly used recovers again normally, and no longer switch to power supply commonly used from stand-by power supply this moment, only when the stand-by power supply fault, switches, and this operating process is for hauling oneself willingly into not runback.
Realize that the program that power supply automaticallyes switch is:
The first step; After powering on, general register and special register are carried out initialization, comprising the initialization of the register of timer and A/D conversion; And the initialization of display screen; Sample frequency is set, and sample frequency was changeed for second step after initialization is accomplished much larger than the frequency of two-way power supply voltage signal;
Whether second step had dropout through circuit breaker additional alarm input, if occur threading off, then alarm is not threaded off if having, and changes for the 3rd step;
The 3rd step, adopt the peak value detection method that the two-way supply voltage is carried out phase sequence and detect, if the power phase mistake, then alarm if power phase is normal, changeed for the 4th step;
The 4th step, according to sample frequency the two-way power supply voltage signal is gathered, accomplish the sampling of one-period after, the effective value of calculating voltage signal and frequency, and the effective value and the frequency of voltage signal be presented on the liquid crystal display screen changeed for the 5th step;
In the 5th step, whether effective value and the frequency of judging voltage signal be within the permissible variation scope, when voltage effective value or frequency have exceeded the permissible variation scope; Send the power supply switching command; Motor is rotated, drive circuit breaker disengagement failure power supply, realize that power supply switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102769448A CN102355048B (en) | 2011-09-19 | 2011-09-19 | Intelligent dual-power automatic transfer switch and running method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102769448A CN102355048B (en) | 2011-09-19 | 2011-09-19 | Intelligent dual-power automatic transfer switch and running method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102355048A true CN102355048A (en) | 2012-02-15 |
| CN102355048B CN102355048B (en) | 2013-11-13 |
Family
ID=45578570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102769448A Active CN102355048B (en) | 2011-09-19 | 2011-09-19 | Intelligent dual-power automatic transfer switch and running method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102355048B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872760A (en) * | 2013-12-31 | 2014-06-18 | 石家庄博发科技有限公司 | Automatic power supply switching control device of transformer |
| CN104716735A (en) * | 2015-04-04 | 2015-06-17 | 佛山蓝途科技有限公司 | Control circuit of simple double-power-supply changeover device |
| CN104897930A (en) * | 2015-05-21 | 2015-09-09 | 国家电网公司 | Current source applying system in multi-set power distribution automation terminal remote measurement and detection and method thereof |
| CN106410949A (en) * | 2015-07-23 | 2017-02-15 | 南京理工大学常熟研究院有限公司 | Intelligent dual-power supply conversion device |
| CN107896001A (en) * | 2017-12-28 | 2018-04-10 | 上海涵嘉电气设备有限公司 | A kind of Dual-power switching system controlled by intelligent wireless |
| CN108200702A (en) * | 2017-12-30 | 2018-06-22 | 湖南汇博电子科技股份有限公司 | Fire emergency equipment and fire emergency control method |
| CN109598996A (en) * | 2018-11-02 | 2019-04-09 | 深圳供电局有限公司 | A kind of distribute-electricity transformer district load cutting training system |
| CN110462534A (en) * | 2017-04-25 | 2019-11-15 | 横河电机株式会社 | Control device, control method and program |
| CN110554260A (en) * | 2019-08-13 | 2019-12-10 | 威胜信息技术股份有限公司 | double-circuit voltage switching line loss measuring system and control method and device |
| CN110824232A (en) * | 2019-11-19 | 2020-02-21 | 安徽中研电气有限责任公司 | Power-off sensor and multi-power supply switching system for base station |
| CN110825206A (en) * | 2019-11-13 | 2020-02-21 | 沧州师范学院 | Computer integration system and automatic fault switching method |
| CN111624939A (en) * | 2020-06-30 | 2020-09-04 | 中国舰船研究设计中心 | PLC-based power monitoring device and monitoring method |
| CN111628563A (en) * | 2020-04-24 | 2020-09-04 | 合肥美的智能科技有限公司 | Power-off protection method and power-off protection device for vending machine and vending machine |
| CN113196071A (en) * | 2020-06-01 | 2021-07-30 | 龚柱 | Method and device for detecting synchronism of contacts of dual-power transfer switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030122532A1 (en) * | 2001-12-31 | 2003-07-03 | Yuan Lin Hou | Facility for supplying spare or auxiliary power supply to processor device |
| CN101656430A (en) * | 2009-07-30 | 2010-02-24 | 杭州之江开关股份有限公司 | Automatic transfer switching equipment and control method |
| CN202197145U (en) * | 2011-09-19 | 2012-04-18 | 河北工业大学 | Intelligent dual-power automatic transfer switch |
-
2011
- 2011-09-19 CN CN2011102769448A patent/CN102355048B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030122532A1 (en) * | 2001-12-31 | 2003-07-03 | Yuan Lin Hou | Facility for supplying spare or auxiliary power supply to processor device |
| CN101656430A (en) * | 2009-07-30 | 2010-02-24 | 杭州之江开关股份有限公司 | Automatic transfer switching equipment and control method |
| CN202197145U (en) * | 2011-09-19 | 2012-04-18 | 河北工业大学 | Intelligent dual-power automatic transfer switch |
Non-Patent Citations (2)
| Title |
|---|
| 于振国: "基于PIC18F6720的自动转换开关电器的智能控制器", 《低压电器》 * |
| 余存泰: "自动转换开关控制器设计", 《现代建筑电气》 * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872760A (en) * | 2013-12-31 | 2014-06-18 | 石家庄博发科技有限公司 | Automatic power supply switching control device of transformer |
| CN103872760B (en) * | 2013-12-31 | 2015-03-18 | 石家庄博发科技有限公司 | Automatic power supply switching control device of transformer |
| CN104716735A (en) * | 2015-04-04 | 2015-06-17 | 佛山蓝途科技有限公司 | Control circuit of simple double-power-supply changeover device |
| CN104897930A (en) * | 2015-05-21 | 2015-09-09 | 国家电网公司 | Current source applying system in multi-set power distribution automation terminal remote measurement and detection and method thereof |
| CN106410949A (en) * | 2015-07-23 | 2017-02-15 | 南京理工大学常熟研究院有限公司 | Intelligent dual-power supply conversion device |
| CN110462534A (en) * | 2017-04-25 | 2019-11-15 | 横河电机株式会社 | Control device, control method and program |
| CN110462534B (en) * | 2017-04-25 | 2022-05-10 | 横河电机株式会社 | Control device, control method, and program |
| CN107896001A (en) * | 2017-12-28 | 2018-04-10 | 上海涵嘉电气设备有限公司 | A kind of Dual-power switching system controlled by intelligent wireless |
| CN108200702B (en) * | 2017-12-30 | 2023-09-15 | 湖南汇博电子科技股份有限公司 | Fire emergency lighting device and fire emergency lighting control method |
| CN108200702A (en) * | 2017-12-30 | 2018-06-22 | 湖南汇博电子科技股份有限公司 | Fire emergency equipment and fire emergency control method |
| CN109598996A (en) * | 2018-11-02 | 2019-04-09 | 深圳供电局有限公司 | A kind of distribute-electricity transformer district load cutting training system |
| CN109598996B (en) * | 2018-11-02 | 2021-01-29 | 深圳供电局有限公司 | Load cutting training system for distribution transformer area |
| CN110554260A (en) * | 2019-08-13 | 2019-12-10 | 威胜信息技术股份有限公司 | double-circuit voltage switching line loss measuring system and control method and device |
| CN110825206A (en) * | 2019-11-13 | 2020-02-21 | 沧州师范学院 | Computer integration system and automatic fault switching method |
| CN110825206B (en) * | 2019-11-13 | 2024-03-19 | 沧州师范学院 | Computer integrated system and fault automatic switching method |
| CN110824232A (en) * | 2019-11-19 | 2020-02-21 | 安徽中研电气有限责任公司 | Power-off sensor and multi-power supply switching system for base station |
| CN111628563A (en) * | 2020-04-24 | 2020-09-04 | 合肥美的智能科技有限公司 | Power-off protection method and power-off protection device for vending machine and vending machine |
| CN113196071A (en) * | 2020-06-01 | 2021-07-30 | 龚柱 | Method and device for detecting synchronism of contacts of dual-power transfer switch |
| CN111624939A (en) * | 2020-06-30 | 2020-09-04 | 中国舰船研究设计中心 | PLC-based power monitoring device and monitoring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102355048B (en) | 2013-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102355048A (en) | Intelligent dual-power automatic transfer switch and running method | |
| CN202197145U (en) | Intelligent dual-power automatic transfer switch | |
| CN203825164U (en) | Detection platform for DC circuit breaker | |
| CN104377816A (en) | Intelligent reclosure breaker and automatic reclosure control method thereof | |
| CN205103386U (en) | High accuracy special type power supply monitoring system | |
| CN105137958A (en) | Railway under-vehicle power supply main control board detection device and detection method | |
| CN104198926A (en) | Anti-trip loop test device for breaker and control method thereof | |
| CN201374500Y (en) | Intelligent power distribution cabinet | |
| CN209496259U (en) | A kind of intelligent breaker same period control device | |
| CN102570588A (en) | Automatic power transfer switch controller and control method thereof | |
| CN203849376U (en) | Breaker anti-tripping loop testing apparatus | |
| CN202363966U (en) | Automatic switching device for emergency power supply | |
| CN110491257A (en) | A kind of fault simulation displaying device | |
| CN202084950U (en) | Device for detecting generation of island in micro power grid system | |
| CN102074902B (en) | Visual alternating current distribution board with interlock protection function | |
| CN202353306U (en) | Alternating current UPS (uninterrupted power supply) monitoring device for power | |
| CN105790430A (en) | Quick-switching combined electrical appliance | |
| CN206226121U (en) | A kind of intelligent distribution network automated remote terminal of power data collecting system | |
| CN201365140Y (en) | Feeder line switch control module for nuclear power station electric power plant | |
| CN202405862U (en) | Automatic power transfer switch controller | |
| CN204559226U (en) | Multiterminal supply line standby self-closing self-healing device | |
| CN104901415B (en) | Dual power supply central control device | |
| CN113765050A (en) | Intelligent micro-grid online detection and fault analysis system | |
| CN103840551A (en) | Intelligent circuit breaker controller | |
| CN210720559U (en) | Intelligent station bus secondary voltage monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170920 Address after: 050000, Kaiyuan Building, No. 322, Zhongshan East Road, Changan District, Hebei, Shijiazhuang A-2-1301 Patentee after: Hebei wosun Wenyou Electronic Technology Co., Ltd. Address before: 300401 Beichen, Tianjin Hebei University of Technology, Beichen Campus Patentee before: Hebei University of Technology |
|
| TR01 | Transfer of patent right |