CN114791137B - Air conditioner management system - Google Patents
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- CN114791137B CN114791137B CN202210598887.3A CN202210598887A CN114791137B CN 114791137 B CN114791137 B CN 114791137B CN 202210598887 A CN202210598887 A CN 202210598887A CN 114791137 B CN114791137 B CN 114791137B
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Classifications
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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
Abstract
The application provides an air conditioner management system, which comprises an air conditioner, a management component, a photovoltaic panel, a voltage detection component, an upper computer and a controller, wherein the management component also comprises an inverter and a voltage controller, and the controller is configured to: when the air conditioner is in a starting-up 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 powered off, the air conditioner is powered on through 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, and the voltage controller is started and integrates the photovoltaic panel and the mains supply 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 regulated according to the obtained data and a preset strategy, so that 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 application 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, solar photovoltaic is adopted to supply power to an air conditioning unit, so that pure direct current power supply or control of the air conditioning unit can become a development trend of an air conditioning market. However, as the photovoltaic power generation is greatly influenced by the environment, when the air conditioning unit is powered by the photovoltaic power, the stability of the performance of the air conditioning unit is difficult to ensure, 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 powered by the photovoltaic power to meet the obstacle. If the traditional mains supply is adopted for power supply, the power grid pressure can be increased, meanwhile, the whole energy consumption of the central air conditioner is large, and the production cost is increased. Therefore, the system can manage the whole air conditioning system and comprehensively arrange the working modes of all air conditioners in the air conditioning system.
In view of this, the present application has been proposed.
Disclosure of Invention
The application provides an air conditioner management system aiming at the technical problems.
An air conditioner management system according to the present application includes:
at least one air conditioner;
the management component is in one-to-one correspondence with the air conditioner and at least comprises an inverter and a voltage controller connected with the inverter, the voltage controller address corresponds to the air conditioner address according to a preset rule and forms a topological relation, the voltage controller is connected with the corresponding air conditioner and the mains supply, and the inverter is connected with the air conditioner;
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 detecting 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, and when the input voltage meets a first preset condition, the air conditioner management system enters a photovoltaic direct-drive mode, the voltage controller is powered off, the mains supply 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, and 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 set to be that the input voltage is greater than the first preset voltage, the second preset condition is set to be that the output voltage is less than the second preset voltage, wherein the second preset voltage is greater than the first preset voltage, and the air conditioning management system mode switch is based on the amplitude of the input voltage and sets a return difference of the preset threshold.
In some embodiments of the 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 the input voltage of the commercial power and the input voltage of the photovoltaic panel to supply power to the air conditioner.
In some embodiments of the application, the management component further comprises an energy storage element electrically connected to the photovoltaic panel, the controller configured to:
when the air conditioner management system is in a photovoltaic direct-driving 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 the redundant electric quantity of the photovoltaic panel is stored in the energy storage part;
when the air conditioner management system is in a photovoltaic grid-connected power generation mode and external illumination meets a second preset illumination condition, the energy storage piece 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 a 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 summarized to the communication gateway, and are uniformly packaged by the communication gateway and then 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 application, the voltage controllers and the communication gateway communicate via a Modbus protocol, and when the communication gateway establishes a data link with each voltage controller, the controllers are configured to:
the voltage controllers are subjected to broadcast addressing, the recovered voltage controllers are online voltage controllers, the number of the online voltage controllers is counted, online spot inspection is performed on the online voltage controllers, and an online list Tab [ B ] of the voltage controllers is generated;
according to the Modbus protocol, reading the full-state parameters of each voltage controller one by one every first preset time, reporting the read full-state parameters, and updating the full-state parameters to the voltage controller online list.
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:
broadcasting and addressing the air conditioners to obtain the number of the online air conditioners, determining the number of the online outdoor units and the respective address numbers according to the feedback information of the outdoor units, and generating an online list Tab [ A ] of the outdoor units;
according to the number of the online air conditioners, checking basic information of the indoor units one by one, 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 online list of the outdoor units;
and generating the 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 the 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 application, when the physical binding relationship and the topology relationship between the air conditioner and the voltage controller are inconsistent after the topology relationship is established, the controller is configured to:
and generating a new voltage controller online list according to the actual physical binding relationship, issuing the new voltage controller online list to a communication gateway, and reestablishing the topological relationship.
In some embodiments of the present application, the remote display platform is connected with the host computer, and the remote display platform is at least used for displaying the unit operation capability 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 satisfies the first preset electricity price condition, the air conditioner 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 itself according to the preset energy saving strategy.
Drawings
FIG. 1 is a block diagram of an air conditioner management system according to the present application;
FIG. 2 is a block diagram of a second embodiment of the air conditioning management system of the present application;
FIG. 3 is a schematic diagram illustrating the connection between an inverter and an outdoor unit according to the present application;
FIG. 4 is a schematic diagram of the wiring of the air conditioner management system of the present application;
FIG. 5 is a schematic diagram showing the topology correspondence between an outdoor unit and a voltage controller according to the present application;
FIG. 6 is a main flow chart of the communication gateway and the inverter according to the present application;
FIG. 7 is a schematic diagram illustrating a control mode switch of an air conditioning management system according to the present application;
FIG. 8 is a diagram showing an example of an electrical parameter host computer according to the present application;
FIG. 9 is a schematic diagram of the connection between the upper computer and the management unit and the air conditioner in the present application;
FIG. 10 is a block diagram of a third embodiment of an air conditioning management system according to the present application;
the following figures:
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 detecting member 5;
a mains supply 7; a communication gateway 8; remote display platform 11.
Detailed Description
The present application will be further described with reference to specific examples so that those skilled in the art may better understand the present application and practice it, but the scope of the present application is not limited to the scope described in the specific embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.
It should be noted that the description of "first", "second", etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implying an indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
The air conditioner of the present application performs a refrigerating 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 a 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 heat is released to the surrounding 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 may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. Throughout the cycle, the air conditioner may adjust the temperature of the indoor space.
An outdoor unit of an air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, an indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater for a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler for 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 application, an air conditioner management system is provided to realize platform management of a plurality of air conditioners 1 with photovoltaic power supply, referring to fig. 1, the air conditioner management system comprises 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, wherein the management component 2 is in one-to-one correspondence with the air conditioners 1, the management component 2 at least comprises an inverter 21 and a voltage controller 22 connected with the inverter 21, the addresses of the voltage controller 22 and the addresses of the air conditioners 1 are corresponding according to preset rules and form a continuous topological relation, the voltage controller 22 is connected with the corresponding air conditioner 1 and the corresponding electric supply 7, and the inverter 21 is connected with the air conditioner 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 panel 4 is connected with the corresponding inverter 21, and the photovoltaic panel 4 can directly supply power to the air conditioner 1 through the inverter 21; the voltage detecting member 5 is connected to the photovoltaic panel 4 for detecting 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 powered off, 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, and the voltage controller 22 is started and integrates the input voltage and the commercial power 7 according to a preset strategy to supply power to the air conditioner 1.
The preset strategy at least comprises a preset energy-saving strategy of the air conditioner 1, wherein the supply of the mains supply 7 is reduced by adjusting the proportion of the input voltage and the mains supply 7. The voltage controller 22 can allocate the input voltage and the power supply proportion of the mains supply 7 according to a preset strategy to save energy, or the voltage controller 22 can adjust the working mode and the required working voltage of the air conditioner 1 according to the preset strategy, and allocate the input voltage and the power supply proportion of the mains supply 7 at the same time, and complementary linkage control is performed from the energy supply end and the output end, so that the purpose of high efficiency and energy saving is achieved, and the self capacity of the air conditioner 1 is not excessively reduced.
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 provided 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 utility power 7 to supply power to the air conditioner 1.
Through the arrangement, one upper computer 3 is connected with a plurality of air conditioners 1 and a plurality of management components 2, and establishes a topological relation between the air conditioners 1 and the voltage controllers 22, so that the address connection between the air conditioners 1 and the voltage controllers 22 is consistent with the physical connection, and a foundation is established for data transmission between the subsequent upper computer 3 and 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 scene of the air conditioner 1 product is improved.
In some embodiments of the present application, the first preset condition is set to be that the input voltage is greater than the first preset voltage, the second preset condition is set to be that the output voltage is less than the second preset voltage, wherein the second preset voltage is greater than the first preset voltage, and the air conditioning management system mode switch is based on the amplitude of the input voltage and sets a return difference of the preset threshold.
Specifically, referring to fig. 7, when the operation state of the outdoor unit is detected to be on, the input voltage of the photovoltaic panel 4 is further detected, if the input voltage is >560V, the system enters the photovoltaic direct-driving mode, the illumination intensity is considered to be sufficient at this time, the system control voltage controller 22 is turned off, the input voltage of the photovoltaic panel 4 is directly supplied to the air conditioner 1 to operate, and the supply of the commercial power 7 is cut off through the design of a unidirectional path on the hardware circuit, and at this time, the operation of the air conditioner 1 is all driven by the photovoltaic panel 4. If the input voltage is detected to be less than 520V, the voltage controller 22 is controlled to start, 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, the air conditioner management system is in a photovoltaic direct drive mode when the input voltage is in a voltage increasing process, and is in a photovoltaic grid-connected power generation mode when the input voltage is in a voltage reducing process.
When the air conditioner management system is in the photovoltaic grid-connected power generation mode, the photovoltaic panel 4 and the commercial power 7 jointly perform air conditioner 1 power supply, 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 supplied with power and the mains 7 is supplied as compensation voltage.
Through the arrangement, return difference control is performed on the switching of the photovoltaic grid-connected power generation mode and the photovoltaic direct-drive mode, so that the voltage controller 22 does not need to be started and stopped frequently, the flexibility of mode switching can be improved, the service life of the voltage controller 22 is indirectly prolonged, meanwhile, the voltage is unstable at the time, and the working efficiency of the air conditioner 1 is affected.
In some embodiments of the present application, referring to fig. 9, the upper computer 3 is connected to 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 a data link with the air conditioner 1 and the voltage controller 22, and the operation data of the air conditioner 1 and the operation data of the voltage controller 22 are summarized to the communication gateway 8, and are uniformly packaged 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 provided with a voltage controller 22, and the communication gateway 8 uses a standard Modbus protocol to carry out state reading and control instruction issuing on the voltage controller 22, so that 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 can simultaneously correspond to the 64 voltage controllers 22 at maximum, and the addresses of the outdoor units are sorted from small to large according to the actual communication addresses of the voltage controllers 22, and the addresses of the outdoor units are also sorted from small to large, and the addresses of the voltage controllers 22 are in one-to-one correspondence. The addresses of the voltage controllers 22 need to be set continuously, and a continuous topology corresponding relation is formed by sequencing the addresses of the outdoor units, and finally the communication gateway 8 displays the topology relation between the outdoor units and the voltage controllers 22 on the upper computer 3 through a serial port, referring to 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 above-mentioned operation data of the air conditioner 1 and the data of the inverter 21 are collected in the gateway, and the communication gateway 8 performs data encapsulation and pushes the upper computer 3. Before the data communication is established, the communication gateway 8 cannot confirm the number of air conditioners 1 and voltage controllers 22, and needs to establish a data link 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 controllers are configured to:
the voltage controller 22 is broadcast addressed, the recovered voltage controller 22 is an online voltage controller 22, the number of the online voltage controllers 22 is counted, online spot inspection is carried out on the online voltage controllers 22, and an online list Tab [ B ] of the voltage controllers 22 is generated;
according to the Modbus protocol, the full state parameters of each voltage controller 22 are read one by one every first preset time interval, the read full state parameters are reported, and the full state parameters are updated to the 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 performs broadcast addressing, specifically, the slave communication address is 0, 30070 point positions are read, the number of recovered devices is counted, and online point detection of the online voltage controller 22 is performed. While the USB reports the number of retrieved voltage controllers 22.
It should be noted that, in this step, the address of the voltage controller 22 and the outdoor unit are established in a topological relation by comparing with the online list of the outdoor unit, so as to correlate and bind the related parameters of the voltage controller 22 with the outdoor unit.
In order to ensure the accuracy of the number confirmation of the voltage controller 22, two rounds of broadcasting can be performed, when the number of replies is consistent, the next communication step is continued, and if the data replied twice is inconsistent, the broadcasting addressing is performed again.
Next, the full state parameters of each voltage controller 22 are read one by one every 500ms interval according to the established Midbus protocol.
It should be noted that the specific interval time may be set according to the number of all state parameters and the network condition where the air conditioner management system is located.
And reporting all acquired full state parameters of the voltage controllers 22 to the upper computer 3 one by one through the USB, wherein in the process, the state parameters of the voltage controllers 22 can be displayed in a serial port printing log form.
Finally, a timing communication task is provided between the voltage controller 22 and the communication gateway 8, and every preset timing time is provided, and 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 variation parameters of each voltage controller 22, such as the current operation state, the input power, the mains 7 voltage, the peak active power, and the input voltage. The issuing control logic includes performing current limiting, power on-off, and other control actions of the voltage controller 22 according to the change parameters of the voltage controller 22.
In some embodiments of the present application, the air conditioners 1 include indoor units and outdoor units, 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 air conditioners 1, obtaining the number of the online air conditioners 1, determining the number of the online outdoor units and respective address numbers according to feedback information of the outdoor units, and generating an online list Tab [ A ] of the outdoor units;
according to the number of the online air conditioners 1, checking basic information of the indoor units one by one, 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 online list of the outdoor units;
and generating the 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.
The topology relationship between the outdoor unit and the inverter 21 is generated from the outdoor unit on-line list and the inverter 21 on-line list, referring to fig. 5.
Specifically, the communication gateway 8 may communicate with a plurality of air conditioners 1 at the same time, and the process of establishing data links between the communication gateway 8 and each air conditioner 1 will be further described.
First, the communication gateway 8 broadcasts an address to confirm the number of outdoor units. Specifically, the communication protocol between air conditioners 1 is used, firstly, the number of refrigerant systems of communication objects is obtained, and meanwhile, according to feedback information of the outdoor units, the number of the outdoor units in each refrigerant system and the respective outdoor unit address numbers are confirmed, and an outdoor unit online list Tab [ A ] is generated.
And secondly, according to the number of online refrigerant systems, checking basic information, an exemplary address number, a current on-off state, an opening degree of an expansion valve of the indoor unit and an operation mode of the indoor unit under each refrigerant system one by one, and generating an online list of the indoor unit.
And reading the operation information of each outdoor unit one by one according to a preset sequence, wherein the preset sequence starts from the outdoor unit with the minimum system number and address number, and accordingly, the largest outdoor unit is polled. The above-mentioned operation information mainly includes key operation parameters such as press frequency, secondary side current, exhaust pressure, etc.
Finally, the topology relationship between the outdoor unit and the voltage controller 22 is generated based on the point detection information of the voltage controller 22.
In the process of establishing data link between the communication gateway 8 and the air conditioner 1, the indoor units and the outdoor units are in one-to-one correspondence, the online quantity 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 the indoor units may be combined into the online list of the corresponding outdoor units, so as to upload and monitor the operation condition of the indoor units, and control the overall operation of the air conditioner 1 according to the operation condition of the indoor units.
Note that, the first element (on-line outdoor unit) other than 0 in Tab [ a ] corresponds to the first element (on-line voltage controller 22) other than 0 in Tab [ B ], and the communication gateway 8 in the air conditioner management system according to the present application integrates the air conditioner 1 data and the voltage controller 22 data into one independent structure and uses the communication protocol interacted by the upper computer 3 to report. The idea of each structure data retrieval is: the outdoor unit data of the air conditioner 1 is updated based on Tab [ A ], and the voltage controller 22 data is updated based on Tab [ B ]. Therefore, for the upper computer 3, a group of data packets covers both the operation data of the air conditioner 1 and the electrical parameters of the voltage controller 22, which are a controlled unit for the upper computer 3 as a whole.
In some embodiments of the present application, the management component 2 further comprises an energy storage element 23, the energy storage element 23 being electrically connected to the photovoltaic panel 4, the controller being configured to:
when the air conditioner management system is in a photovoltaic direct-drive mode and the external illumination meets a first preset illumination condition, the input voltage of the photovoltaic panel 4 is larger than the working voltage required by the air conditioner 1, and the surplus electric quantity of the photovoltaic panel 4 is stored in the energy storage piece 23;
when the air conditioner management system is in the photovoltaic grid-connected power generation mode and the external illumination meets the second preset illumination condition, the energy storage piece 23 supplies power to the air conditioner 1.
In practical application, the photovoltaic panel 4 can meet the photovoltaic direct-driving mode in the energy storage process of one day for 4-5 hours on average, and at the moment, the power capability that the photovoltaic panel 4 can provide is higher, and the practical requirement of the far-reaching air conditioner unit is met. In this mode, the voltage controller 22 of the management component 2 is turned off, but the energy storage component of the management component 2 is still operating normally, and the management component 2 will control the inverter 21 to store excess electrical energy into the energy storage component. When the air conditioner 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 electric quantity of the energy storage component is started to compensate the commercial power 7, so that the demand of the air conditioner unit on the commercial power 7 at night is further reduced, and the pressure of the commercial power 7 is reduced.
Through the arrangement, according to the real-time acquired by the air conditioner management system and the night time which is also the electricity utilization peak period of the air conditioner 1, the power grid pressure is large, and the energy storage control strategy of the management component 2 is fully considered, redundant electric quantity is stored and applied to the electricity utilization peak period, so that the power grid pressure can be effectively reduced, and the working mode of daytime energy storage night application is realized.
It should be noted that, when the voltage controller 22 is in the photovoltaic grid-connected power generation mode, a part of the electric quantity of the inverter 21 may be stored as needed for standby. For example, when the air conditioner 1 is informed that the system area is about to be powered off, a part of the electric power may be controlled to be stored in the inverter 21.
In some embodiments of the 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 input voltages of the mains supply 7 and the photovoltaic panel 4 to supply power to the air conditioner 1. Specifically, when the outdoor unit is detected to be powered off, the inverter 21 is controlled to be powered on and 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 electric energy of the commercial power 7 and the electric energy of the photovoltaic panel 4 are integrated by the inverter 21 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 standby, a photovoltaic grid-connected power generation mode is adopted, so that the problem that the air conditioner 1 is failed to start up due to the fact that the air conditioner 1 is started up suddenly and the input voltage of the photovoltaic panel 4 is insufficient to support the whole machine of the air conditioner 1 is 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, where the remote display platform 11 is connected to the upper computer 3, and the remote display platform 11 is at least used to display 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 controller 22, the voltage controller 22 and the corresponding voltage controller 22 equipment are bound one by one through the topology relation of the communication gateway 8, and then the corresponding electrical parameters of the voltage controller 22 are reported as part of the state parameters of the outdoor unit. The host computer 3 can display the parameters on the remote display platform 11 in various modes according to a data list, a chart and the like, so as to solve the problem of displaying the electrical parameters, and a display example diagram refers to fig. 8.
In some embodiments of the present application, on the premise of keeping the normal control of the voltage controller 22, the operation of the air conditioner 1 is controlled in a coordinated manner, and on the one hand, the air conditioner management system controls the action of the inverter 21, and also obtains the real-time electricity price through cloud docking, and at the same time, the energy saving strategy of the air conditioner 1 itself can be controlled.
By way of example, at the peak electricity price moment, the operation capacity of the air conditioner 1 is controlled to be reduced by 80%, so that the energy consumption is further reduced, and the unit operation capacity and the working state machine voltage of the inverter 21 are displayed in a linkage manner in real time at the front end of the display UI of the system, so that more visual electricity consumption interaction is provided for an administrator of the air conditioner 1, and the intellectualization of the whole system is further improved.
In some embodiments of the application, the application includes not only electrical parameters of the energy supply side, such as voltage, current, peak power, etc., but also operational parameters of the air conditioner 1 itself, such as press frequency, exhaust pressure, ambient temperature, etc.
The air conditioner 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 to a platform for display, and controls the voltage controller 22 or the air conditioner 1 to issue a power saving strategy in cooperation with the operation parameters of the air conditioner 1, so that the air conditioner unit can realize energy-saving and high-efficiency operation. Meanwhile, comprehensive analysis can be performed according to the display content, an intuitive data presentation form and analysis thought can be provided for a user of the management system, more control ideas are provided for management energy conservation, and expansibility is further provided.
In some embodiments of the present application, when the real-time electricity price satisfies the first preset electricity price condition, the air conditioner management system controls the input voltage of the photovoltaic panel 4, the actual input voltage of the utility power 7, and the operating gear of the air conditioner 1 itself according to the preset energy saving strategy.
In some embodiments of the present application, the upper computer 3 embeds an energy-saving policy, and because the upper computer 3 can obtain the most and all current electrical parameters of the air conditioner 1, the upper computer 3 can combine with the actual running state of the air conditioner 1 system to issue the energy-saving policy, so that the power consumption of the air conditioner 1 system to the current utility power 7 and the waste of power resources under low load can be effectively saved.
In some embodiments of the present application, when the physical binding relationship and the topology relationship between the air conditioner 1 and the voltage controller 22 are inconsistent after the topology relationship is established, the controller is configured to:
and generating a new voltage controller 22 online list according to the actual physical binding relationship, issuing the new voltage controller to the communication gateway 8, and reestablishing the topological relationship.
Specifically, after the upper computer 3 takes the topology table, tab [ a ] and Tab [ B ] reported by the communication gateway 8, the data are integrated according to the requirement, and the binding relationship currently defaulted by the user is intuitively presented in the interface through the UI picture, as shown in fig. 5.
In the actual installation process, if the binding relationship between the off-site machine and the inverter 21 is inconsistent with the default topology due to the problem of difficulty in site construction, data binding and subsequent system control cannot be performed.
To solve the above problem, the host computer 3 provides an interface that allows the user to establish a topological relationship that is consistent with reality in the form of a picture drag. The idea of data processing is as follows: because the on-line list of the air conditioner 1 is fixed, that is, tab [ A ] remains unchanged, the user drags the UI picture to modify the arrangement sequence of each element in Tab [ B ], that is, a new on-line list of the voltage controller 22 is generated, which is defined as Tab_1B ], and the principle is that only the sequence of the elements can be modified, and the number cannot be increased or reduced. After the modification of Tab_1B is completed by the upper computer 3, the new online list Tab_1B is issued to the communication gateway 8 through the communication protocol between the upper computer 3 and the communication gateway 8. After receiving the new online list, the communication gateway 8 will reestablish the topology mapping relationship, and the data packet reported to the upper computer 3 reports the subsequent data according to the index relationship of Tab [ A ] and Tab_1B ].
In summary, the present application provides an air conditioner management system, wherein the system includes an air conditioner 1, a management component 2, a photovoltaic panel 4, a voltage detection unit 5, a host computer 3 connected to the air conditioner 1 and the management component 2, and a controller, the management component 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-up 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 powered off, the mains supply 7 is cut off, the air conditioner 1 is powered on 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, and the voltage controller 22 starts up and integrates the photovoltaic panel 4 and the mains supply 7 according to a preset strategy to supply power to the air conditioner 1. By establishing the 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 air conditioner 1 management are improved, and meanwhile energy saving can be carried out from an energy supply end under the condition that the efficiency of the air conditioner 1 is ensured.
Claims (9)
1. An air conditioning management system, comprising:
at least one air conditioner;
the management component is in one-to-one correspondence with the air conditioner, and at least comprises an inverter and a voltage controller connected with the inverter, wherein the address of the voltage controller corresponds to the address of the air conditioner according to a preset rule and forms a topological relation, the voltage controller is connected with the corresponding air conditioner and the commercial power, and the inverter is connected with the air conditioner;
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 detecting 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, and when the input voltage meets a first preset condition, the air conditioner management system enters a photovoltaic direct-drive mode, the voltage controller is powered off, the mains supply 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, and 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;
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 input voltage of the commercial power and the input voltage of the photovoltaic panel to supply power to the air conditioner.
2. The air conditioning management system according to claim 1, wherein the first preset condition is set such that the input voltage is greater than a first preset voltage, the second preset condition is set such that the input voltage is less than a second preset voltage, wherein the second preset voltage is greater than the first preset voltage, and wherein the air conditioning management system mode switch is based on the magnitude of the input voltage and sets a return difference of a preset threshold.
3. The air conditioner management system of claim 1 wherein the management component further comprises an energy storage component electrically connected to the photovoltaic panel, the controller 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 the redundant electric quantity of the photovoltaic panel is stored in the energy storage piece;
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 part supplies power to the air conditioner.
4. The air conditioner management system of claim 1, wherein the upper computer is connected to the voltage controller and the air conditioner through a communication gateway, the controller being configured to:
the communication gateway establishes a 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 summarized to the communication gateway and are uniformly packaged by the communication gateway and then pushed to an upper computer;
and switching the operation mode of the air conditioner management system according to each operation data.
5. The air conditioner management system of claim 4 wherein the voltage controllers and the communication gateway communicate via a Modbus protocol, the controllers being configured to, when a communication gateway establishes a data link with each of the voltage controllers:
the voltage controllers are subjected to broadcast addressing, the recovered voltage controllers are online voltage controllers, the number of the online voltage controllers is counted, online spot inspection is performed on the online voltage controllers, and an online list Tab [ B ] of the voltage controllers is generated;
and reading the full-state parameters of each voltage controller one by one at intervals of a first preset time according to a Modbus protocol, reporting the read full-state parameters, and updating the full-state parameters to the voltage controller online list.
6. The air conditioner management system of claim 4, wherein the air conditioner includes an indoor unit and an outdoor unit, and the controller is configured to, when the communication gateway establishes a data link with each air conditioner:
the air conditioners are broadcast addressed to obtain the number of the online air conditioners, 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 online list Tab [ A ] of the outdoor units is generated;
according to the number of the online air conditioners, checking basic information of the indoor units one by one, and generating an online list of the indoor units;
reading operation information of each outdoor unit one by one according to a preset reading sequence, and adding the operation information to an online list of the outdoor units;
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.
7. The air conditioner management system of claim 6 wherein when a physical binding relationship between the air conditioner and the voltage controller and the topology relationship are inconsistent after the topology relationship is established, the controller is configured to:
and generating a new voltage controller online list according to the actual physical binding relationship, issuing the new voltage controller online list to the communication gateway, and reestablishing the topological relationship.
8. The air conditioning management system of claim 1, further comprising a remote display platform connected to the host computer, the remote display platform being configured to display at least a unit operation capability of the air conditioner, an operating state of the voltage controller, an input voltage of the photovoltaic panel, and a real-time electricity rate.
9. The air conditioner management system according to claim 8, wherein when the real-time electricity rate satisfies a first preset electricity rate condition, the air conditioner management system controls the input voltage of the photovoltaic panel, the actual input voltage of the utility power, and the operating gear of the air conditioner itself according to a preset energy saving strategy.
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