CN221326969U - Power distribution control circuit and controller - Google Patents
Power distribution control circuit and controller Download PDFInfo
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- CN221326969U CN221326969U CN202323266899.5U CN202323266899U CN221326969U CN 221326969 U CN221326969 U CN 221326969U CN 202323266899 U CN202323266899 U CN 202323266899U CN 221326969 U CN221326969 U CN 221326969U
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- 238000004891 communication Methods 0.000 claims abstract description 52
- 230000003993 interaction Effects 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 230000006855 networking Effects 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 abstract description 18
- 238000007789 sealing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000005315 distribution function Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The power distribution control circuit comprises a control module, a display module, a communication module and a driving module, wherein the display module performs data interaction with the control module through a data bus II, and the control module performs data interaction with the communication module and the driving module through a data bus I respectively; the control module obtains the output power set by the power regulator or the upper computer through the communication module and is used for obtaining the conduction time window of each path after operation; the driving module is used for outputting a level signal to drive a corresponding electric power regulator or other types of power switches to execute on and off actions; the communication module comprises 8 paths of independent RS485 communication interfaces and 1 path of MODBUS communication interfaces; the driving module comprises an isolation driving interface realized by an 8-route photoelectric coupler; the electric heating system temperature control requirement is guaranteed, meanwhile, impact on a power supply is reduced, a user does not need to conduct power expansion, the influence on the power grid quality is reduced, and the use cost of the user is reduced.
Description
Technical Field
The utility model relates to the technical field of power control equipment, in particular to a power supply power distribution control circuit and a controller.
Background
In an industrial electric heating system, a simple electric heating system usually adopts a mechanically controllable switch (such as an electromagnetic relay, a contactor and the like) to control the power of a heating load, and a more complex electric heating system generally adopts an electronic switch (such as a silicon controlled module, a solid-state relay, an electric power regulator and the like) to control the power of the heating load; when a plurality of electric heating devices work in the same power grid, the switches are frequently and intensively turned on and off in the heating process, the peaks and the troughs of electricity are frequently generated, so that continuous impact is caused on a power supply, the quality of the power grid is affected, and the normal operation of other electric devices in the power grid is further affected.
Therefore, a proper control method is needed, and when a plurality of electric heating devices work in the same power grid, the problem of frequent centralized on and centralized off is effectively avoided by coordinating the on and off time of each electric heating switch, so that the purposes of meeting the temperature control requirement of an electric heating system and enabling the total running load of the electric heating system to generate smaller fluctuation are achieved, and the frequent impact on a power supply is reduced.
The Chinese patent with the publication number of CN205910618U, named as an online power distribution circuit and an online power distributor, provides an online power distribution controller with a power distribution function only, and the power controller can be connected with more than two power regulators (also called thyristor power controllers) in the same power grid through a 1-way communication module to realize the coordinated distribution control of opening and closing, thereby relieving harmonic current and impact on other power equipment and the power grid. However, the power controller provided in the patent only supports the matched power regulator as an electronic switch to perform power distribution, does not support other types of electronic switches and mechanically controllable switches to perform power distribution, and has no universality; in addition, the power controller and all supported matched power regulators are networked in the same network, once the communication function of a certain device in the network is failed, the whole network is still disabled, so that the problem of the failure of the on-line distribution function of the whole power grid is caused, serious power grid impact is further caused, the normal operation of other power devices is influenced, and economic loss is caused for users.
Disclosure of utility model
Aiming at the situation, in order to overcome the defects of the prior art, the utility model aims to provide a power distribution control circuit and a controller for a power supply, which effectively solve the problem that the whole network is disabled due to the communication function failure of single equipment.
The technical proposal for solving the problems is that,
In one aspect, the utility model provides a power distribution control circuit of a power supply, which comprises a control module, a display module, a communication module and a driving module, wherein the display module performs data interaction with the control module through a data bus II, and the control module performs data interaction with the communication module and the driving module through a data bus I respectively; the control module obtains the output power set by the power regulator or the upper computer through the communication module and is used for obtaining the conduction time window of each path after operation; the driving module is used for outputting a level signal to drive a corresponding electric power regulator or other types of power switches to execute on-off actions; the communication module comprises 8 paths of independent RS485 communication interfaces and 1 path of MODBUS communication interfaces; the drive module comprises an isolated drive interface implemented by an 8-way optocoupler.
Further, the control module is an ARM processor.
Further, the MODBUS communication interface is used for being connected with an upper computer for networking, and the upper computer sets output power for each power switch through the MODBUS communication interface.
Further, each 1 path of level signals output by the isolation driving interface simultaneously drive 1-10 power modulators or other types of electronic switches.
On the other hand, the utility model provides a power distribution controller of a power supply, which comprises a main board, a display panel and a shell, wherein a control module, a communication module and a driving module are integrated on the main board, and the main board and the display panel form a whole through a pin header connector and are arranged in the shell; the display panel is integrated with a display module and four keys, and is connected with the main board through two rows of pins to realize data exchange.
Further, the shell comprises an upper sealing cover and a bottom shell, the upper sealing cover is transparent, four round holes are formed in the upper sealing cover, and four keys on the display panel are respectively located in the four round holes.
Further, the bottom shell is opaque, the rear end of the bottom shell is embedded with DIN buckles, and the shell is mounted on the guide rail through the DIN buckles.
Compared with the prior art, the utility model has the beneficial effects that:
1. In a control period of the electric heating system, the power distribution controller of the power supply can distribute the work load of each electric heating to the greatest extent by coordinating the on-off time (output time window) of each electric heating switch so as to achieve the purposes of meeting the temperature control requirement of the electric heating system and enabling the running total load of the electric heating system to generate smaller fluctuation, thereby reducing the impact on the power supply. The electric heating system temperature control requirement is guaranteed, meanwhile, impact on a power supply is reduced, a user does not need to conduct power expansion, the influence on the power grid quality is reduced, and the use cost of the user is reduced.
2. The controller obtains the output power information of the power regulator connected with the controller through the RS485 communication interface, and uniformly controls the on-off time of the power regulator in the network through the corresponding driving interface. When the power regulator is maintained or fails in the communication control network, the power regulator or the power regulator of the network where the power regulator is located is only required to be stopped, and the operation of equipment on other networks is not influenced, so that the influence on the power distribution effect of equipment in a power grid is reduced.
Drawings
Fig. 1 is a schematic diagram of a configuration of a power distribution controller of a power source.
Fig. 2 is a schematic block diagram of a power distribution circuit.
Fig. 3 is a functional block diagram of motherboard hardware of a power distribution controller.
Fig. 4 is a schematic diagram of an application wiring of a power distribution controller controlling a power conditioner.
Fig. 5 is a schematic diagram of the application wiring of a power distribution controller controlling other power switches.
Fig. 6 is a prior art control load power output result.
Fig. 7 shows the output result after the control of the present power distribution controller.
Reference numerals
01. A control module; 02. a display module; 03. a communication module; 04. a driving module; 10. an upper cover; 11. a display panel; 12. a main board; 13. a bottom case; 14. DIN card rail.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, a power distribution controller for a power supply comprises a main board 12, a display panel 11 and a shell, wherein a control module 01, a communication module 03 and a driving module 04 are integrated on the main board, and the main board 12 and the display panel 11 form a whole through pin header connectors and are installed in the shell;
The display panel 11 is integrated with a display module and four keys, and the display panel 11 is connected with the main board 12 through two rows of pins to realize data exchange.
The shell comprises an upper sealing cover 10 and a bottom shell 13, the upper sealing cover 10 is transparent, display content of the display module 02 and the on-off state of each driving interface indicator corresponding to the driving module 04 are conveniently observed, four round holes are formed in the upper sealing cover 10, four keys on the display panel 11 are respectively located in the four round holes, a key column is conveniently pulled out, and a user conveniently performs key operation.
The bottom shell 13 is opaque, the DIN buckle 15 is embedded at the rear end of the bottom shell 13, and the shell is mounted on the guide rail through the DIN buckle 15.
A power supply power distribution control circuit as shown in figure 2,
The intelligent display device comprises a control module 01, a display module 02, a communication module 03 and a driving module 04, wherein the display module 02 performs data interaction with the control module 01 through a data bus II, and the control module 01 performs data interaction with the communication module 03 and the driving module 04 through a data bus I.
Further, the control module 01 is an ARM processor.
The control module 01 obtains the output power set by the electric power regulator or the upper computer through the communication module 03 and is used for obtaining the conduction time window of each path after operation;
The driving module 04 is used for outputting a level signal to drive a corresponding electric power regulator or other types of power switches to execute on-off actions;
The communication module 03 comprises 8 paths of independent RS485 communication interfaces and 1 path of MODBUS communication interfaces; the driving module 04 comprises 8 isolated driving interfaces realized by the photoelectric coupler, and each 1 path of level signals output by the isolated driving interfaces simultaneously drive 1-10 electric power regulators or other types of electronic switches.
Specifically, the power distribution control circuit provides 8 paths of mutually independent RS485 communication interfaces and 8 paths of independent isolation driving interfaces corresponding to the mutually independent RS485 communication interfaces, and each path of RS485 communication interface and each path of isolation driving interface can be respectively connected with 1 or more matched power regulators to establish 8 paths of independent communication and control networks.
The MODBUS communication interface is used for being connected with an upper computer to form a network, the upper computer sets output power for each power switch through the MODBUS communication interface, when a power control switch of a heating system in the power network is not an electric power regulator, but other electronic switches (such as a silicon controlled rectifier module, a solid-state relay and the like) or mechanical controllable switches (such as an electromagnetic relay, a contactor and the like), 8 independent isolation driving interfaces provided by the control circuit can be connected with the switches of the types, and the power distribution is carried out by controlling the connection and disconnection of the power control switches according to the set output power of the upper computer in a centralized manner.
The controller obtains the output power information of the power regulator connected with the controller through the RS485 communication interface, and uniformly controls the on-off time of the power regulator in the network through the corresponding driving interface; when the power regulator is maintained or fails in the communication control network, the power regulator or the power regulator of the network where the power regulator is located is only required to be stopped, and the operation of equipment on other networks is not influenced, so that the influence on the power distribution effect of equipment in a power grid is reduced.
In practical applications, the power distribution controller may implement two different control modes.
Control method 1 shown in fig. 4:
The control module 01 is connected with 8 paths of different power regulators respectively through 8 paths of independent RS485 communication interfaces of the communication module 03 to form a network, receives the output power information of the power regulators, obtains a conduction time window after operation, outputs level signals corresponding to different output time windows respectively through 8 paths of interfaces of the driving module 04, and the power regulators are turned on and turned off at different time points.
Control method 2 shown in fig. 5:
The control module 01 is connected with the upper computer through the MODBUS communication interface of the communication module 03 to form a network, the upper computer respectively sets output power information of 8 paths of different power switches, obtains a conduction time window after operation of the control module 01, and then respectively outputs level signals corresponding to different output time windows through the 8 paths of interfaces of the driving module 04 to drive the power switches to be turned on and turned off at different time points.
In a real working condition, the electric heating load controlled by the multi-path power switch always needs to keep consistent heating and cooling actions, and a method for enabling the power switch to share the same control signal is generally adopted. As shown in fig. 4 and 5, each driving interface of the power distribution controller can drive multiple power switches at the same time, s is the number from s0 to s9, s is the number 1-8 of the driving interface, and multiple power switches can be connected in parallel through a driving signal line to execute unified on-off actions.
The power distribution algorithm of the power distribution controller of the power supply is as follows: all the controlled power switches are set to be uniform cycle power adjustment period T, and the number of corresponding alternating current power supply cycles is N. In the operation of the electric heating system, the rated power of the load is P1, the real-time output power of the power switch is P2, and the number of power supply cycles conducted by the power switch is calculated
After the control module 01 obtains the output power information of each power switch, the number n of power supply cycles which need to be conducted is calculated respectively, and s is more than or equal to 1 and less than or equal to 8. Setting a threshold delta, wherein delta is a positive integer greater than 0, finding out all combinations which are in summation values M and meet M=N or N < M < N+delta from N1, N2, N3, N4, N5, N6, N7 and N8 members, screening the combinations, removing the combinations containing the same members, and sequentially subtracting 1 from each member value which meets the condition of N < M < N+delta in the rest combinations until M=N; and ordering the rest members which do not accord with N.ltoreq.M.ltoreq.N+delta from small to large. In the same cycle power adjustment period, carrying out ending connection on the combination with all corrected summation values equal to N on the conduction time, and outputting according to a complete power adjustment period; the combination with the summation value not equal to N is sequentially staggered and output in the conducting time according to the ordered sequence;
As shown in fig. 6 and 7, the 8 power switches are respectively defined as CH1, CH2, CH3, CH4, CH5, CH6, CH7, and CH8, the number of power cycles corresponding to one cycle power modulation period is n=50, and the number of output cycles of the power switches is n1=43, n2=33, n3=48, n4=5, n5=11, n6=26, n7=30, and n8=44. Setting the threshold to 7, a combination (N1, N5), (N3, N4), and (N6, N7) satisfying the condition that 50+.ltoreq.m < 57 can be obtained, where (n1+n5-N) =4, correction yields n1=40, n5=9, (n3+n4-N) =3, correction yields n3=46, n5=4, (n6+n7-N) =6, correction yields n6=23, and n7=27.
As shown in fig. 7, in the same cycle power adjustment period, the power switches corresponding to the combinations (N1, N5), (N3, N4), (N6, N7) respectively form three new complete power adjustment periods in the on time, and the remaining power switches corresponding to N2 and N8 form a time difference in the on time, so as to avoid power superposition caused by simultaneous conduction.
The total load shown in fig. 6 shows that when power distribution is not adopted, the power switch is turned on intensively to form peaks at the 1 st to 5 th cycles, and turned off intensively to form troughs at the 45-50 th cycles, and the frequent peak trough alternation inevitably generates strong impact on the power grid, thereby affecting the normal operation of other electrical equipment.
The total load shown in fig. 7 is regulated by the power distribution of the controller, and the output window of part of the power switches forms time delay, so that centralized on and off are effectively avoided, the total load is always in a stable working state, and the impact on a power grid and the influence on other electrical equipment are greatly reduced.
In summary, the power distribution controller of the power supply provides 8 paths of mutually independent RS485 communication interfaces and 8 paths of independent driving interfaces corresponding to the communication interfaces, when the maintenance or the failure of the power regulator exists in the communication control network, only the power regulator of the power regulator or the power regulator of the network where the power regulator exists is required to be stopped, and the operation of equipment on other networks is not influenced, so that the influence on the power distribution effect of equipment in a power grid is reduced. The 8-path independent driving interface provided by the power distribution controller not only can drive the electric power regulator, but also can drive other types of electronic switches and mechanical controllable switches, so that the application range of the controller is greatly increased, and a lower-cost solution can be provided for a simple electric heating system.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The power distribution control circuit is characterized by comprising a control module, a display module, a communication module and a driving module, wherein the display module performs data interaction with the control module through a data bus II, and the control module performs data interaction with the communication module and the driving module through a data bus I respectively;
The control module obtains the output power set by the power regulator or the upper computer through the communication module and is used for obtaining the conduction time window of each path after operation;
The driving module (04) is used for outputting a level signal to drive a corresponding electric power regulator or power switch to execute on-off actions;
The communication module comprises 8 paths of independent RS485 communication interfaces and 1 path of MODBUS communication interfaces;
the drive module comprises an isolated drive interface implemented by an 8-way optocoupler.
2. The power distribution control circuit according to claim 1, wherein the control module is an ARM processor.
3. The power distribution control circuit according to claim 1, wherein the MODBUS communication interface is used for connecting with an upper computer for networking, and the upper computer sets output power for each power switch via the MODBUS communication interface.
4. The power distribution control circuit according to claim 1, wherein 1 to 10 power modulators or electronic switches are simultaneously driven by the level signal output from each 1 path of the isolation driving interface.
5. A power distribution controller on which the power distribution control circuit according to any one of claims 1 to 4 is mounted, characterized by comprising a main board, a display panel and a housing, wherein the main board is integrated with a control module, a communication module and a driving module, and the main board and the display panel form a whole through pin header connectors and are mounted in the housing; the display panel is integrated with a display module and four keys, and is connected with the main board through two rows of pins to realize data exchange.
6. The power distribution controller according to claim 5, wherein the housing comprises an upper cover and a bottom case, the upper cover is transparent, four round holes are formed in the upper cover, and four keys on the display panel are respectively located in the four round holes.
7. The power distribution controller according to claim 6, wherein the bottom case is opaque, a DIN snap is embedded in a rear end of the bottom case, and the housing is mounted on the rail by the DIN snap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323266899.5U CN221326969U (en) | 2023-11-30 | 2023-11-30 | Power distribution control circuit and controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323266899.5U CN221326969U (en) | 2023-11-30 | 2023-11-30 | Power distribution control circuit and controller |
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| CN221326969U true CN221326969U (en) | 2024-07-12 |
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| CN202323266899.5U Active CN221326969U (en) | 2023-11-30 | 2023-11-30 | Power distribution control circuit and controller |
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