CN114791137A - Air conditioner management system - Google Patents
Air conditioner management system Download PDFInfo
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- CN114791137A CN114791137A CN202210598887.3A CN202210598887A CN114791137A CN 114791137 A CN114791137 A CN 114791137A CN 202210598887 A CN202210598887 A CN 202210598887A CN 114791137 A CN114791137 A CN 114791137A
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- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 58
- 238000004378 air conditioning Methods 0.000 claims description 40
- 238000004146 energy storage Methods 0.000 claims description 16
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- 238000007726 management method Methods 0.000 description 64
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
- F24F2005/0067—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy with photovoltaic panels
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner management system, wherein the system comprises an air conditioner, a management component, a photovoltaic panel, a voltage detection piece, an upper computer and a controller, the management component further comprises an inverter and a voltage controller, and the controller is configured to: when the air conditioner is in a starting state, the voltage detection piece detects input voltage of the photovoltaic panel, when the input voltage meets a first preset condition, the air conditioner management system enters a photovoltaic direct-drive mode, the voltage controller is shut down, the air conditioner is powered by the photovoltaic panel, when the input voltage meets a second preset condition, the air conditioner management system enters a photovoltaic grid-connected power generation mode, the voltage controller is started, and the photovoltaic panel and a mains supply are integrated to supply power to the air conditioner according to a preset strategy. By establishing a topological structure between the voltage controller and the air conditioner, the input voltage, the actual working voltage of the mains supply and the air conditioner are adjusted according to the obtained data and the preset strategy, the quality and the efficiency of air conditioner management are improved, and meanwhile, the energy consumption can be reduced under the condition of ensuring the efficiency of the air conditioner.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioner management system.
Background
At present, with the wide application of solar energy, the solar photovoltaic is adopted to supply power to the air conditioning unit, and the pure direct current power supply or control of the air conditioning unit becomes the development trend of the air conditioning market. However, because photovoltaic power generation is greatly influenced by the environment, the stability of the performance of the air conditioning unit is difficult to ensure when the air conditioning unit uses photovoltaic power supply, the output of the air conditioning unit is unstable, the utilization rate of the actual output power of the photovoltaic inverter is low, and the air conditioning unit is obstructed when the photovoltaic power supply is used for supplying power. If the traditional commercial power is adopted for power supply, the pressure of a power grid can be increased, and meanwhile, the overall energy consumption of the central air conditioner is large, so that the production cost is increased. Therefore, the system can manage the whole air conditioning system and overall work modes of all air conditioners in the air conditioning system.
The invention is provided in view of the above.
Disclosure of Invention
The present invention provides an air conditioning management system for solving the above technical problems.
An air conditioning management system according to the application includes:
at least one air conditioner;
the management components are in one-to-one correspondence with the air conditioners and at least comprise inverters and voltage controllers connected with the inverters, addresses of the voltage controllers correspond to addresses of the air conditioners according to preset rules and form a topological relation, the voltage controllers are electrically connected with the corresponding air conditioners and the city, and the inverters are connected with the air conditioners;
the upper computer is connected with the voltage integration circuit and the air conditioner;
at least one photovoltaic panel connected with a corresponding inverter;
at least one voltage detection member connected to the photovoltaic panel;
the controller is configured to:
when the air conditioner is in a starting state, the voltage detection part detects the input voltage of the photovoltaic panel, when the input voltage meets a first preset condition, the air conditioner management system enters a photovoltaic direct-drive mode, the voltage controller is shut down, commercial power is cut off, and the photovoltaic panel supplies power to the air conditioner;
when the input voltage meets a second preset condition, the air conditioner management system enters a photovoltaic grid-connected power generation mode, the voltage controller is started and integrates the input voltage and the commercial power to supply power to the air conditioner according to a preset strategy.
In some embodiments of the present application, the first preset condition is that the input voltage is greater than a first preset voltage, the second preset condition is that the output voltage is less than a second preset voltage, wherein the second preset voltage is greater than the first preset voltage, the mode switching of the air conditioning management system depends on the amplitude of the input voltage, and a return difference of a preset threshold is set.
In some of the embodiments of the present application, the controller is configured to: when the air conditioner is in a shutdown state, the air conditioner management system enters a photovoltaic grid-connected power generation mode, the voltage controller is started, and the voltage controller integrates mains supply and input voltage of the photovoltaic panel and then supplies power to the air conditioner.
In some embodiments of the present application, the management component further includes an energy storage device electrically connected to the photovoltaic panel, and the controller is configured to:
when the air conditioner management system is in a photovoltaic direct-drive mode and external illumination meets a first preset illumination condition, the input voltage of the photovoltaic panel is larger than the working voltage required by the air conditioner, and redundant electric quantity of the photovoltaic panel is stored in the energy storage element;
when the air conditioner management system is in a photovoltaic grid-connected power generation mode and outside illumination meets a second preset illumination condition, the energy storage element supplies power to the air conditioner.
In some embodiments of the present application, the upper computer is connected to the voltage controller and the air conditioner through the communication gateway, and the controller is configured to:
the communication gateway establishes data link with the air conditioner and the voltage controller, and the operation data of the air conditioner and the operation data of the voltage controller are gathered to the communication gateway, and are uniformly packaged by the communication gateway and then are pushed to the upper computer;
and switching the operation mode of the air conditioner management system according to each operation data.
In some embodiments of the present application, the voltage controllers communicate with the communication gateway via a Modbus protocol, and when the communication gateway establishes a data link with each voltage controller, the controller is configured to:
carrying out broadcast addressing on the voltage controllers, wherein the replied voltage controllers are online voltage controllers, counting the number of the online voltage controllers, carrying out online point inspection on the online voltage controllers, and generating an online list Tab [ B ] of the voltage controllers;
and according to a Modbus protocol, reading the full-state parameters of each voltage controller one by one at intervals of first preset time, reporting the read full-state parameters, and updating the full-state parameters to the online list of the voltage controllers.
In some embodiments of the present application, the air conditioner includes an indoor unit and an outdoor unit, and when the communication gateway establishes a data link with each air conditioner, the controller is configured to:
the method comprises the steps of carrying out broadcast addressing on air conditioners, obtaining the number of online air conditioners, determining the number of online outdoor units and respective address numbers according to outdoor unit feedback information, and generating an outdoor unit online list Tab [ A ];
checking the basic information of the indoor units one by one according to the number of the online air conditioners, and generating an online list of the indoor units;
reading the operation information of each outdoor unit one by one according to a preset reading sequence, and adding the operation information to an outdoor unit online list;
and generating a topological relation between the outdoor unit and the voltage controller according to the outdoor unit online list and the voltage controller online list.
And generating a topological relation between the outdoor unit and the inverter according to the outdoor unit online list and the inverter online list.
In some embodiments of the present application, when the topological relationship is established and the physical binding relationship and the topological relationship between the air conditioner and the voltage controller are inconsistent, the controller is configured to:
and generating a new voltage controller online list according to the actual physical binding relationship, transmitting the new voltage controller online list to the communication gateway, and reestablishing the topological relationship.
In some embodiments of the present application, the remote display platform is further included, and the remote display platform is connected with the upper computer, and the remote display platform is at least used for displaying the unit operation capacity of the air conditioner, the working state of the voltage controller, the input voltage of the photovoltaic panel and the real-time electricity price.
In some embodiments of the present application, when the real-time electricity price meets a first preset electricity price condition, the photovoltaic energy management system controls the input voltage of the photovoltaic panel, the actual input voltage of the utility power, and the working gear of the air conditioner according to a preset energy-saving strategy.
Drawings
FIG. 1 is a first block diagram of an air conditioning management system according to the present invention;
FIG. 2 is a second block diagram of the air conditioning management system of the present invention;
FIG. 3 is a schematic diagram illustrating the inverter and the outdoor unit of the present invention;
FIG. 4 is a schematic wiring diagram of the air conditioning management system of the present invention;
FIG. 5 is a schematic diagram illustrating a topological correspondence between an outdoor unit and a voltage controller according to the present invention;
FIG. 6 is a main flow chart of the communication between the communication gateway and the inverter according to the present invention;
FIG. 7 is a schematic diagram illustrating control mode switching of the air conditioning management system according to the present invention;
FIG. 8 is an exemplary diagram of an electrical parameter host computer according to the present invention;
FIG. 9 is a schematic diagram of the connection between the upper computer and the management unit and the air conditioner;
FIG. 10 is a third block diagram of the air conditioning management system of the present invention;
the attached drawings are as follows:
an air conditioner 1; a management part 2; an inverter 21; a voltage controller 22; an energy storage member 23;
an upper computer 3; a photovoltaic panel 4; a voltage detection member 5;
a commercial power 7; a communication gateway 8; a remote display platform 11.
Detailed Description
The present invention is further described below in conjunction with specific examples to enable those skilled in the art to better understand the present invention and to practice it, but the scope of the present invention as claimed is not limited to the scope described in the specific embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature.
In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
An air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the ambient environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and the expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode. The outdoor unit and the indoor unit are connected through a liquid pipe and a gas pipe.
In the embodiment of the present application, an air conditioner management system is provided to implement platform management on a plurality of air conditioners 1 equipped with photovoltaic power supply, referring to fig. 1, the air conditioner management system includes at least one air conditioner 1, at least one management component 2, an upper computer 3, at least one photovoltaic panel 4, at least one voltage detection component 5 and a controller, where the management component 2 includes at least one inverter 21 and one air conditioner 1, the management component 2 includes at least one inverter 21 and a voltage controller 22 connected to the inverter 21, addresses of the voltage controller 22 and addresses of the air conditioners 1 correspond to each other according to a preset rule and form a continuous topological relationship, the voltage controller 22 is connected to the corresponding air conditioners 1 and a commercial power 7, and the inverter 21 is connected to the air conditioners 1; the upper computer 3 is connected with the voltage controller 22 and the air conditioner 1 and is used for realizing data acquisition and logic control issuing of the inverter 21 and the air conditioner 1; the photovoltaic panels 4 are connected with corresponding inverters 21, and the photovoltaic panels 4 can directly supply power to the air conditioner 1 through the inverters 21; the voltage detection member 5 is connected to the photovoltaic panel 4, and is configured to detect an input voltage of the photovoltaic panel 4.
The controller is configured to: when the air conditioner 1 is in a starting state, the voltage detection part 5 detects the input voltage of the photovoltaic panel 4, when the input voltage meets a first preset condition, the air conditioner management system enters a photovoltaic direct-drive mode, the voltage controller 22 is shut down, the commercial power 7 is cut off, and the photovoltaic panel 4 directly supplies power to the air conditioner 1; when the input voltage meets a second preset condition, the air conditioner management system enters a photovoltaic grid-connected power generation mode, the voltage controller 22 is started and integrates the input voltage and the mains supply 7 according to a preset strategy to supply power to the air conditioner 1.
The preset strategy at least comprises the steps of adjusting the ratio of the input voltage to the commercial power 7 to reduce the supply of the commercial power 7 end, and the preset energy-saving strategy of the air conditioner 1. The voltage controller 22 may adjust the power supply ratio between the input voltage and the commercial power 7 according to a preset strategy to save energy, or the voltage controller 22 may adjust the working mode and the required working voltage of the air conditioner 1 according to a preset strategy, and adjust the power supply ratio between the input voltage and the commercial power 7 at the same time, so as to perform complementary linkage control from the energy supply end and the output end, thereby achieving the purpose of high efficiency and energy saving, and simultaneously not excessively reducing the self-capability of the air conditioner 1.
In some embodiments of the present application, in order to ensure the stability of the working state of the outdoor unit, referring to fig. 3, the inverter 21 is directly connected to the outdoor unit, and a control switch may be further disposed between the inverter 21 and the air conditioner 1, when the voltage controller 22 is turned off, the control switch is turned on, the photovoltaic panel 4 directly supplies power to the air conditioner 1 through the inverter 21, when the voltage controller 22 is turned on, the control switch is turned off, the input voltage of the photovoltaic panel 4 is connected to the voltage controller 22 through the inverter 21, and the voltage controller 22 integrates the input voltage and the commercial power 7 to supply power to the air conditioner 1.
Through the arrangement, the upper computer 3 is connected with the plurality of air conditioners 1 and the plurality of management components 2, and the topological relation between the air conditioners 1 and the voltage controllers 22 is established, so that the address connection and the physical connection between the air conditioners 1 and the voltage controllers 22 are consistent, and a foundation is established for data transmission among the subsequent upper computers 3, the air conditioners 1 and the voltage controllers 22. Meanwhile, the working states of the voltage controller 22 and the air conditioner 1 are adjusted according to the transmitted data so as to meet the requirements under different situations, and the use scenes of the air conditioner 1 products are improved.
In some embodiments of the present application, the first preset condition is set to be that the input voltage is greater than a first preset voltage, the second preset condition is set to be that the output voltage is less than a second preset voltage, wherein the second preset voltage is greater than the first preset voltage, the mode switching of the air conditioning management system is according to the amplitude of the input voltage, and the return difference of the preset threshold is set.
Specifically, referring to fig. 7, when the operation state of the outdoor unit is detected as startup, the input voltage of the photovoltaic panel 4 is further detected, if the input voltage is greater than 560V, the system enters a photovoltaic direct drive mode, at this time, the illumination intensity is considered to be sufficient, the system controls the voltage controller 22 to shut down, the input voltage of the photovoltaic panel 4 is directly supplied to the air conditioner 1 to operate, the supply of the commercial power 7 is cut off through the design of a one-way path on a hardware circuit, and at this time, the operation of the air conditioner 1 is completely driven by the photovoltaic panel 4. If the input voltage is detected to be less than 520V, the voltage controller 22 is controlled to be started, and the air-conditioning management system is switched back to the photovoltaic grid-connected power generation mode.
In the process, when the input voltage is between 520V and 560V, when the input voltage is in the voltage increasing process, the air conditioning management system is in the photovoltaic direct-drive mode, and when the input voltage is in the voltage decreasing process, the air conditioning management system is in the photovoltaic grid-connected power generation mode.
When the air conditioner management system is in a photovoltaic grid-connected power generation mode, the photovoltaic panel 4 and the commercial power 7 jointly supply power to the air conditioner 1, and the power supply proportion of the photovoltaic panel 4 and the commercial power 7 can be set as follows: the photovoltaic panel 4 is first powered, the mains 7 being supplied as a compensation voltage.
Through the arrangement, return difference control is carried out on switching of a photovoltaic grid-connected power generation mode and a photovoltaic direct-drive mode, so that the voltage controller 22 does not need to be started or stopped frequently, the flexibility of mode switching can be improved, the service life of the voltage controller 22 is indirectly prolonged, and meanwhile, the working efficiency of the air conditioner 1 is influenced due to unstable voltage at that time.
In some of the embodiments of the present application, referring to fig. 9, the upper computer 3 is connected with the air conditioner 1 and the voltage controller 22 through the communication gateway 8, and the controller is configured to:
the communication gateway 8 establishes data link with the air conditioner 1 and the voltage controller 22, the operation data of the air conditioner 1 and the operation data of the voltage controller 22 are gathered to the communication gateway 8, and the data are packaged uniformly by the communication gateway 8 and then are pushed to the upper computer 3; and switching the operation mode of the air conditioner management system according to each operation data.
In the air conditioner management system, each air conditioner 1 is equipped with a voltage controller 22 in a standard mode, the communication gateway 8 uses a standard Modbus protocol to read the state of the voltage controller 22 and issue a control instruction, and then a photovoltaic energy data management and data interaction platform suitable for the whole air conditioner 1 system is built to bear a subsequent air conditioner unit energy-saving strategy.
In some embodiments of the present application, the communication gateway 8 may simultaneously correspond to 64 voltage controllers 22 at maximum, sort the addresses of the outdoor units from small to large according to the actual communication addresses of the voltage controllers 22, and correspond to the addresses of the outdoor units, and also sort the addresses of the outdoor units from small to large, and perform one-to-one correspondence with the addresses of the voltage controllers 22. The addresses of the voltage controllers 22 need to be set continuously, a continuous topological corresponding relation is formed by the addresses of the outdoor units and the address sequence of the outdoor units, and finally the communication gateway 8 displays the topological relation between the outdoor units and the voltage controllers 22 on the upper computer 3 through serial ports, which is shown in fig. 4. The communication gateway 8 and the voltage controller 22 can be connected through an RS485 serial port, the communication gateway 8 and the air conditioner 1 are connected through a system communication data control bus of the air conditioner 1, and the communication gateway 8 and the upper computer 3 are connected through a USB.
The operation data of the air conditioner 1 and the data of the inverter 21 are gathered in the gateway, and are packaged by the communication gateway 8 in a unified way and pushed to the upper computer 3. Before establishing data communication, the communication gateway 8 cannot confirm the number of the air conditioners 1 and the voltage controllers 22, and a data link needs to be established in the following manner.
In some of the embodiments of the present application, referring to fig. 6, when the communication gateway 8 establishes a data link with each voltage controller 22, the controller is configured to:
broadcasting and addressing the voltage controller 22, wherein the replied voltage controller 22 is the online voltage controller 22, counting the number of the online voltage controllers 22, performing online point inspection on the online voltage controllers 22, and generating an online list Tab [ B ] of the voltage controllers 22;
and according to the Modbus protocol, reading the full-state parameters of each voltage controller 22 one by one at intervals of a first preset time, reporting the read full-state parameters, and updating the full-state parameters to an online list of the voltage controllers 22.
Specifically, the communication gateway 8 communicates with a plurality of voltage controllers 22 simultaneously, see fig. 6.
Firstly, the voltage controller 22 is broadcast addressed, specifically, the communication address of the slave is 0, 30070 point locations are read, the number of replied devices is counted, and online point inspection of the online voltage controller 22 is performed. And the USB reports the number of voltage controllers 22 retrieved.
It should be noted that, in this step, comparison with the outdoor unit online list is required, a topological relationship is established between the address of the voltage controller 22 and the outdoor unit, and association and binding are performed between the relevant parameters of the subsequent voltage controller 22 and the outdoor unit.
In order to ensure the accuracy of the quantity confirmation of the voltage controllers 22, two rounds of broadcasting can be performed, when the reply quantity is consistent, the next communication step is continued, and if the data replied continuously twice are inconsistent, the broadcasting addressing is performed again.
Next, according to the predetermined Midbus protocol, the full-state parameters of each voltage controller 22 are read one by one at intervals of 500 ms.
It should be noted that the specific interval time may be set according to the number of full-state parameters and the network condition of the air-conditioning management system.
And reporting all the acquired full-state parameters of the voltage controller 22 to the upper computer 3 one by one through a USB (universal serial bus), and displaying the state parameters of the voltage controller 22 in a serial port printing log mode in the process.
Finally, there is a timing communication task between the voltage controller 22 and the communication gateway 8, and at every preset timing interval, the communication gateway 8 starts the timing communication task, including reading the state parameters of the voltage controller 22 and issuing control logic.
It should be noted that the state parameters include the variable parameters of each voltage controller 22, such as the current operating state, the input power, the voltage of the utility line 7, the peak active power, and the input voltage. The issuing control logic includes the control actions of the voltage controller 22 such as current limiting, power on/off and the like according to the variation parameters of the voltage controller 22.
In some of the embodiments of the present application, the air conditioners 1 include an indoor unit and an outdoor unit, and referring to fig. 7, when the communication gateway 8 establishes a data link with each air conditioner 1, the controller is configured to:
the method comprises the steps of carrying out broadcast addressing on the air conditioners 1 to obtain the number of the on-line air conditioners 1, determining the number of the on-line outdoor units and respective address numbers according to outdoor unit feedback information, and generating an outdoor unit on-line list Tab [ A ];
checking the basic information of the indoor units one by one according to the number of the on-line air conditioners 1, and generating an on-line list of the indoor units;
reading the operation information of each outdoor unit one by one according to a preset reading sequence, and adding the operation information to an outdoor unit online list;
and generating a topological relation between the outdoor unit and the voltage controller 22 according to the outdoor unit online list and the voltage controller 22 online list.
A topological relation between the outdoor unit and the inverter 21 is generated from the outdoor unit online list and the inverter 21 online list, and fig. 5 is referred to.
Specifically, the communication gateway 8 may communicate with a plurality of air conditioners 1 at the same time, and a process of establishing a data link between the communication gateway 8 and each air conditioner 1 is further described.
First, the communication gateway 8 broadcasts an address to confirm the number of outdoor units. Specifically, using the communication protocol between the air conditioners 1, the number of the refrigerant systems of the communication object is firstly obtained, and meanwhile, the number of the outdoor units and the address numbers of the respective outdoor units in each refrigerant system are confirmed according to the feedback information of the outdoor units, and an outdoor unit online list Tab [ A ] is generated.
Secondly, according to the number of the online refrigerant systems, the basic information of the indoor unit under each refrigerant system, such as address numbers, current switch states, the opening degree of an expansion valve of the indoor unit and operation modes, is checked one by one, and an online list of the indoor unit is generated.
And reading the operation information of each outdoor unit one by one according to a preset sequence, wherein the preset sequence is started from the outdoor unit with the minimum system number and address number, and the outdoor unit with the maximum system number and address number is polled sequentially. The operation information mainly includes key operation parameters, such as press frequency, secondary side current, exhaust pressure, and the like.
Finally, a topological relationship between the outdoor unit and the voltage controller 22 is generated based on the point inspection information of the voltage controller 22.
In the process of establishing the data link between the communication gateway 8 and the air conditioner 1, the indoor units correspond to the outdoor units one by one, the online number is consistent, and the topological relation between the indoor units and the voltage controller 22 can be determined by establishing the topological relation between the outdoor units and the voltage controller 22.
In some embodiments, the basic information of the indoor units in the online list of indoor units may be merged into the corresponding online list of outdoor units, so as to implement uploading and monitoring of the operation conditions of the indoor units, and control the overall operation of the air conditioner 1 according to the operation conditions of the indoor units.
It should be noted that, the first element (online outdoor unit) of Tab [ a ] that is not 0 corresponds to the first element (online voltage controller 22) of Tab [ B ] that is not 0, and the communication gateway 8 in the air-conditioning management system according to the present application integrates the data of the air conditioner 1 and the data of the voltage controller 22 into an independent structure, and reports the data using an interactive communication protocol of the upper computer 3. The idea of each structural body data retrieval is as follows: the outdoor unit data of the air conditioner 1 is updated according to Tab [ A ], and the voltage controller 22 data is updated according to Tab [ B ]. Therefore, for the upper computer 3, one set of data packets covers both the operation data of the air conditioner 1 and the electrical parameters of the voltage controller 22, and the two are a controlled unit for the upper computer 3 as a whole.
In some embodiments of the present application, the management component 2 further includes an energy storage device 23, the energy storage device 23 is electrically connected to the photovoltaic panel 4, and the controller is configured to:
when the air conditioner management system is in a photovoltaic direct-drive mode and external illumination meets a first preset illumination condition, the input voltage of the photovoltaic panel 4 is greater than the working voltage required by the air conditioner 1, and redundant electric quantity of the photovoltaic panel 4 is stored in the energy storage element 23;
when the air conditioner management system is in a photovoltaic grid-connected power generation mode and the outside illumination meets a second preset illumination condition, the energy storage element 23 supplies power to the air conditioner 1.
In practical application, the photovoltaic panel 4 can satisfy the photovoltaic direct-drive mode in the process of storing energy for 4-5 hours on average in one day, and the power capacity that the photovoltaic panel 4 can provide is higher and far exceeds the actual demand of the air conditioning unit. In this mode, the voltage controller 22 of the management part 2 is turned off, but the energy storage part of the management part 2 is still operating normally, and the management part 2 controls the inverter 21 to store the surplus electric energy into the energy storage part. When the air conditioning management system detects that the local time is at night and the voltage controller 22 is in the photovoltaic grid-connected power generation mode, the standby power of the energy storage component is started to compensate the commercial power 7, the demand of the air conditioning unit on the commercial power 7 at night is further reduced, and the pressure of the commercial power 7 is reduced.
Through the setting, also be 1 power consumption peak period of air conditioner according to the real-time and night that air conditioner management system acquireed, grid pressure is great, and the energy storage control strategy of the management part 2 of the full consideration is stored unnecessary electric quantity and is used it to the power consumption peak period, can effectually reduce grid pressure, realizes the working mode that energy storage was used night daytime.
It should be noted that when the voltage controller 22 is in the photovoltaic grid-connected power generation mode, part of the electric quantity in the inverter 21 may also be stored as needed to be ready for standby. For example, when the air conditioner 1 is notified that a power failure is imminent in a system area, a part of the power amount in the inverter 21 may be controlled to be stored.
In some of the embodiments of the present application, the controller is configured to: when the air conditioner 1 is in a shutdown state, the air conditioner management system enters a photovoltaic grid-connected power generation mode, the voltage controller 22 is started, and the voltage controller 22 integrates the input voltages of the commercial power 7 and the photovoltaic panel 4 and then supplies power to the air conditioner 1. Specifically, if the operation state of the outdoor unit is detected to be shutdown, the inverter 21 is controlled to be started and is in the photovoltaic grid-connected power generation mode. At this time, the electric energy of the photovoltaic panel 4 is directly stored in the inverter 21, and the inverter 21 integrates the commercial power 7 and the electric energy of the photovoltaic panel 4 to supply power to the air conditioner 1, so as to maintain the standby operation of the whole air conditioner 1.
When the air conditioner 1 is in a standby state, a photovoltaic grid-connected power generation mode is adopted, so that the problem that the air conditioner 1 fails to start due to the fact that the air conditioner 1 is started suddenly and the input voltage of the photovoltaic panel 4 is not enough to support the whole machine of the air conditioner 1 can be effectively prevented.
In some embodiments of the present application, referring to fig. 10, the air conditioner management system further includes a remote display platform 11, the remote display platform 11 is connected to the upper computer 3, and the remote display platform 11 is at least used for displaying the unit operation capability of the air conditioner 1, the operating state of the voltage controller 22, the input voltage of the photovoltaic panel 4, and the real-time electricity price.
After the outdoor unit is configured with the voltage controllers 22, the outdoor unit is bound with the corresponding voltage controller 22 devices one by one through the topological relation of the communication gateway 8, and then the corresponding electrical parameters of the voltage controller 22 are reported together as part of the state parameters of the outdoor unit. The upper computer 3 can carry out diversified display on the remote display platform 11 on the parameters according to forms such as data lists, charts and the like, the problem of display of the electrical parameters is solved, and a display example graph refers to fig. 8.
In some embodiments of the present application, on the premise of maintaining normal control of the voltage controller 22, the operation of the air conditioner 1 is subjected to linkage control, and the air conditioner management system controls the action of the inverter 21 on the one hand, and also obtains the real-time electricity price through cloud docking, and can control the energy-saving strategy of the air conditioner 1 itself at the same time.
Exemplarily, at the peak electricity price moment, the operating capacity derating of the air conditioner 1 is controlled to be 80%, energy consumption is further reduced, the unit operating capacity and the voltage of the inverter 21 operating state machine are displayed in a linkage mode in real time at the display UI front end of the system, a more visual electricity utilization information interaction is provided for a manager of the air conditioner 1, and the intelligence of the whole system is further improved.
In some embodiments of the present application, the present application not only shows the electrical parameters of the energy supply side, such as voltage, current, peak power, etc., but also includes the operation parameters of the air conditioner 1 itself, such as the compressor frequency, the discharge pressure, the ambient temperature, etc.
The air conditioning management system integrates the electric parameters of the energy supply side of the air conditioner 1 and the working parameters of the air conditioner 1 into a platform for displaying, and controls the voltage controller 22 or the air conditioner 1 to issue the electricity-saving strategy by matching with the operation parameters of the air conditioner 1, so that the single air conditioning unit realizes energy-saving and efficient operation. Meanwhile, comprehensive analysis can be carried out according to the display content, an intuitive data presentation form and analysis thought are provided for a user of the management system, more control thoughts are provided for management energy conservation, and the management system has expansibility.
In some embodiments of the present application, when the real-time electricity price satisfies the first preset electricity price condition, the photovoltaic energy management system controls the input voltage of the photovoltaic panel 4, the actual input voltage of the utility power 7, and the operating range of the air conditioner 1 according to a preset energy-saving strategy.
In some embodiments of the present application, the upper computer 3 is embedded with an energy saving policy, and since the upper computer 3 can obtain most and all current electrical parameters of the air conditioner 1, the upper computer 3 can issue the energy saving policy in combination with the operation state of the actual air conditioner 1 system, so that the power consumption of the current commercial power 7 by the air conditioner 1 system can be effectively saved, and the waste of power resources under low load can be avoided.
In some embodiments of the present application, when the topological relation is not consistent with the physical binding relation between the air conditioner 1 and the voltage controller 22 after the topological relation is established, the controller is configured to:
and generating a new online list of the voltage controller 22 according to the actual physical binding relationship, sending the list to the communication gateway 8, and reestablishing the topological relationship.
Specifically, the upper computer 3 integrates data as required after taking the topology table, the Tab [ a ] and the Tab [ B ] reported by the communication gateway 8, and visually presents the currently default binding relationship to the user through UI pictures in the interface, as shown in fig. 5.
In the actual installation process, if the binding relationship between the field external unit and the inverter 21 is inconsistent with the default topology due to the field construction difficulty problem, data binding and subsequent system control cannot be performed.
In order to solve the above problem, the upper computer 3 provides an interface, which allows a user to establish a topological relationship consistent with the reality in a picture dragging manner. The data processing idea is as follows: because the online list of the air conditioner 1 is fixed, that is, Tab [ a ] remains unchanged, the user drags the UI picture to modify the arrangement order of each element in Tab [ B ], that is, a new online list of the voltage controllers 22 is generated, which is defined as Tab _1[ B ], the principle is that only the ordering of the elements can be modified, and the number cannot be increased or decreased. After the upper computer 3 finishes the modification of Tab _1[ B ], a new online list Tab _1[ B ] is issued to the communication gateway 8 through a communication protocol between the upper computer 3 and the communication gateway 8. After receiving the new online list, the communication gateway 8 reestablishes the topology mapping relationship, and reports subsequent data to the data packet reported to the upper computer 3 according to the index relationship between Tab [ A ] and Tab _1[ B ].
In summary, the present invention provides an air conditioning management system, wherein the system includes an air conditioner 1, a management unit 2, a photovoltaic panel 4, a voltage detection unit 5, an upper computer 3 connected to the air conditioner 1 and the management unit 2, and a controller, the management unit 2 further includes an inverter 21 and a voltage controller 22, and the controller is configured to: when the air conditioner 1 is in a starting state, the voltage detection part 5 detects input voltage of the photovoltaic panel 4, when the input voltage meets a first preset condition, the air conditioner management system enters a photovoltaic direct-drive mode, the voltage controller 22 is shut down, the commercial power 7 is cut off, the air conditioner 1 is powered through the photovoltaic panel 4, when the input voltage meets a second preset condition, the air conditioner management system enters a photovoltaic grid-connected power generation mode, the voltage controller 22 is started, and the photovoltaic panel 4 and the commercial power 7 are integrated to supply power to the air conditioner 1 according to a preset strategy. By establishing a topological structure between the voltage controller 22 and the air conditioner 1, the working states of the voltage controller 22 and the air conditioner 1 are obtained, the input voltage, the commercial power 7 and the air conditioner 1 are regulated to work according to a preset energy-saving strategy, an energy-saving and efficient air conditioner management system is built, the quality and the efficiency of the management of the air conditioner 1 are improved, and meanwhile, energy can be saved from an energy supply end under the condition of ensuring the efficiency of the air conditioner 1.
Claims (10)
1. An air conditioning management system, comprising:
at least one air conditioner;
the management components correspond to the air conditioners one by one, each management component at least comprises an inverter and a voltage controller connected with the inverter, the address of each voltage controller corresponds to the address of each air conditioner according to a preset rule and forms a topological relation, the voltage controllers are connected with the corresponding air conditioners and commercial power, and the inverters are connected with the air conditioners;
the upper computer is connected with the voltage integration circuit and the air conditioner;
at least one photovoltaic panel connected with the corresponding inverter;
at least one voltage detection member connected to the photovoltaic panel;
the controller is configured to:
when the air conditioner is in a starting state, the voltage detection part detects the input voltage of the photovoltaic panel, when the input voltage meets a first preset condition, the air conditioner management system enters a photovoltaic direct-drive mode, the voltage controller is shut down, commercial power is cut off, and the photovoltaic panel supplies power to the air conditioner;
when the input voltage meets a second preset condition, the air conditioner management system enters a photovoltaic grid-connected power generation mode, the voltage controller is started and integrates the input voltage and the commercial power to supply power to the air conditioner according to a preset strategy.
2. The air conditioning management system according to claim 1, wherein the first preset condition is that the input voltage is greater than a first preset voltage, the second preset condition is that the output voltage is less than a second preset voltage, the second preset voltage is greater than the first preset voltage, and the mode switching of the air conditioning management system is based on a magnitude of the input voltage and a return difference of a preset threshold is set.
3. The air conditioning management system of claim 1, wherein the controller is configured to: when the air conditioner is in a shutdown state, the air conditioner management system enters a photovoltaic grid-connected power generation mode, the voltage controller is started, and the voltage controller integrates the commercial power and the input voltage of the photovoltaic panel and then supplies power to the air conditioner.
4. The air conditioning management system of claim 1, wherein the management component further comprises an energy storage device electrically connected to the photovoltaic panel, the controller configured to:
when the air conditioner management system is in a photovoltaic direct-drive mode and outside illumination meets a first preset illumination condition, the input voltage of the photovoltaic panel is larger than the working voltage required by the air conditioner, and redundant electric quantity of the photovoltaic panel is stored in the energy storage element;
when the air conditioner management system is in a photovoltaic grid-connected power generation mode and the external illumination meets a second preset illumination condition, the energy storage element supplies power to the air conditioner.
5. The air conditioning management system of claim 1, wherein the upper computer is connected to the voltage controller and the air conditioner via a communication gateway, the controller configured to:
the communication gateway establishes a data link with the air conditioner and the voltage controller, and the operating data of the air conditioner and the operating data of the voltage controller are collected to the communication gateway, and are transmitted to an upper computer after being uniformly packaged by the communication gateway;
and switching the operation mode of the air-conditioning management system according to each operation data.
6. The air conditioning management system according to claim 5, wherein the voltage controllers communicate with the communication gateway via a Modbus protocol, and when the communication gateway establishes a data link with each of the voltage controllers, the controller is configured to:
performing broadcast addressing on the voltage controllers, wherein the replied voltage controllers are online voltage controllers, counting the number of the online voltage controllers, performing online point inspection on the online voltage controllers, and generating an online list Tab [ B ] of the voltage controllers;
and according to a Modbus protocol, reading the full-state parameters of each voltage controller one by one at intervals of first preset time, reporting the read full-state parameters, and updating the full-state parameters to the voltage controller online list.
7. The air conditioning management system of claim 5, wherein the air conditioners comprise an indoor unit outdoor unit, and when the communication gateway establishes a data link with each air conditioner, the controller is configured to:
the air conditioners are subjected to broadcast addressing, the number of the online air conditioners is obtained, the number of the online outdoor units and the respective address numbers are determined according to the feedback information of the outdoor units, and an outdoor unit online list Tab [ A ] is generated;
checking the basic information of the indoor units one by one according to the number of the online air conditioners, and generating an online list of the indoor units;
reading the operation information of each outdoor unit one by one according to a preset reading sequence, and adding the operation information to the outdoor unit online list;
and generating a topological relation between the outdoor unit and the voltage controller according to the outdoor unit online list and the voltage controller online list.
8. The air conditioning management system according to claim 7, wherein when the topological relationship is not consistent with the physical binding relationship between the air conditioner and the voltage controller after the topological relationship is established, the controller is configured to:
and generating a new voltage controller online list according to the actual physical binding relationship, transmitting the new voltage controller online list to the communication gateway, and reestablishing the topological relationship.
9. The air conditioning management system according to claim 1, further comprising a remote display platform connected to the upper computer, wherein the remote display platform is at least used for displaying unit operation capacity of the air conditioner, working state of the voltage controller, input voltage of the photovoltaic panel and real-time electricity price.
10. The air conditioner management system according to claim 9, wherein when the real-time electricity price meets a first preset electricity price condition, the photovoltaic energy management system controls the input voltage of the photovoltaic panel, the actual input voltage of the commercial power and the working gear of the air conditioner according to a preset energy-saving strategy.
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