CN117293920A - Control method and device of photovoltaic air conditioner, electronic equipment and storage medium - Google Patents

Control method and device of photovoltaic air conditioner, electronic equipment and storage medium Download PDF

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Publication number
CN117293920A
CN117293920A CN202311178643.0A CN202311178643A CN117293920A CN 117293920 A CN117293920 A CN 117293920A CN 202311178643 A CN202311178643 A CN 202311178643A CN 117293920 A CN117293920 A CN 117293920A
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CN
China
Prior art keywords
power
load
air conditioner
photovoltaic
photovoltaic air
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Pending
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CN202311178643.0A
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Chinese (zh)
Inventor
梁慧仪
黄猛
黄颂儒
贝帆
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Gree Electric Appliances Inc of Zhuhai
Guochuang Energy Internet Innovation Center Guangdong Co Ltd
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Guochuang Energy Internet Innovation Center Guangdong Co Ltd
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Application filed by Gree Electric Appliances Inc of Zhuhai, Guochuang Energy Internet Innovation Center Guangdong Co Ltd filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202311178643.0A priority Critical patent/CN117293920A/en
Publication of CN117293920A publication Critical patent/CN117293920A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • 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
    • 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
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H02J3/144—Demand-response operation of the power transmission or distribution network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/388—Islanding, i.e. disconnection of local power supply from the network

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The control method, the device, the electronic equipment and the storage medium of the photovoltaic air conditioner provided by the embodiment of the invention comprise the steps of acquiring photovoltaic power generation amount and load power consumption at fixed time when the grid is monitored to be off-grid and the photovoltaic air conditioner is started to operate, determining the load power of a load device according to the load power consumption, determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption, and controlling the power generation power of the photovoltaic air conditioner until the load power is in the inverse power protection interval when the load power is monitored not to be in the inverse power protection interval. The reverse power protection interval is a power interval representing the supply and demand balance between the power generation power of the photovoltaic air conditioner and the load power of the load device, so that when the load power is monitored not to be in the reverse power protection interval, the power generation power of the photovoltaic air conditioner is controlled, so that the electric energy generated by the photovoltaic air conditioner is just consumed by the load device, and the power generation waste of the photovoltaic air conditioner is avoided, and the reverse power transmission of redundant electric energy to a power grid is effectively prevented.

Description

Control method and device of photovoltaic air conditioner, electronic equipment and storage medium
Technical Field
The embodiment of the invention relates to the technical field of household appliances, in particular to a control method and device of a photovoltaic air conditioner, electronic equipment and a storage medium.
Background
At present, the photovoltaic air conditioner is a new application trend, and with the continuous development of the photovoltaic air conditioner technology, the performance of the photovoltaic air conditioner serving as an interface between the distributed energy and the power grid directly determines the quality of power generation of the distributed energy, and the quality of power generation can influence whether the grid connection can be normally performed. Because the surplus electric energy output by the photovoltaic air conditioner can cause unstable power grid and generate harmonic pollution after being integrated into the power grid, and meanwhile, the photovoltaic electric energy has non-schedulability, the surplus electric energy of the photovoltaic air conditioner is prevented from reversely transmitting power to the power grid.
In the prior art, a power level adjustment mode can be adopted to prevent reverse power transmission, namely when the electric energy output by the photovoltaic air conditioner is larger than the electric energy used by the load circuit, the connection between the photovoltaic air conditioner and the power grid is immediately cut off, or the switch of a part of the photovoltaic air conditioner is disconnected, if the connection between the photovoltaic air conditioner and the power grid is immediately cut off, the power grid supplies power to the load circuit at the moment, and if the switch of a part of the photovoltaic air conditioner is disconnected, the power grid is likely to supply power with larger power to the load circuit even if the switch of a part of the photovoltaic air conditioner is disconnected, so that the power generation electric energy of the photovoltaic air conditioner is easy to waste.
Disclosure of Invention
In view of this, the embodiment of the invention provides a control method, a control device, electronic equipment and a storage medium of a photovoltaic air conditioner, which can effectively prevent redundant electric energy from reversely transmitting power to a power grid while avoiding the waste of power generation of the photovoltaic air conditioner.
In a first aspect, an embodiment of the present invention provides a method for controlling a photovoltaic air conditioner, where the method is applied to a controller of the photovoltaic air conditioner, and the method includes:
when the grid off-grid is monitored and the photovoltaic air conditioner is started to operate, the photovoltaic power generation amount and the load power consumption amount are obtained at regular time; the load electricity consumption is the total electricity consumption consumed by a load device, and the load device is a photovoltaic air conditioner or a photovoltaic air conditioner and an electricity consumption device connected with the photovoltaic air conditioner;
determining the load power of a load device according to the load power consumption;
determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount; the reverse power protection interval is a power interval used for representing supply and demand balance between the generated power of the photovoltaic air conditioner and the load power of the load device;
and when the load power is not in the reverse power protection interval, a power control signal is sent to a power module of the photovoltaic air conditioner so as to control the power generation power of the photovoltaic air conditioner until the load power is in the reverse power protection interval.
In one possible embodiment, determining the reverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount includes:
acquiring and calculating the operation time length of the reverse power protection interval and the electricity utilization time length of the load device;
and determining an inverse power protection interval based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration and the operation duration.
In one possible embodiment, determining the reverse power protection interval based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration, and the operation duration includes:
determining a unit reverse power value based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration and the operation duration;
determining an inverse power protection interval according to the preset inverse power value and the unit inverse power value; wherein the preset inverse power value is smaller than the unit inverse power value.
In one possible embodiment, the unit reverse power value is determined by:
P＝T 2* (Q g -Q f )/T 1 ；
wherein P represents a unit reverse power value, Q g Represents photovoltaic power generation amount, Q f Representing the power consumption of the load, T 1 Indicating the electricity consumption time length T 2 Indicating the duration of operation.
In one possible embodiment, determining the load power of the load device according to the load power consumption includes:
the load power of the load device is determined based on the load power consumption and the power consumption duration.
In one possible embodiment, when it is detected that the load power is not in the reverse power protection interval, a power control signal is sent to a power module of the photovoltaic air conditioner to control the generated power of the photovoltaic air conditioner, including:
and when the load power is detected to be equal to or larger than the unit reverse power value of the reverse power protection interval, a power increasing control signal is sent to a power module of the photovoltaic air conditioner so as to control the power generation of the photovoltaic air conditioner to be increased.
In one possible embodiment, when it is detected that the load power is not in the reverse power protection interval, a power control signal is sent to a power module of the photovoltaic air conditioner to control the generated power of the photovoltaic air conditioner, including:
and when the load power is monitored to be equal to or smaller than a preset reverse power value of the reverse power protection interval, a power reduction control signal is sent to a power module of the photovoltaic air conditioner so as to control and reduce the generated power of the photovoltaic air conditioner.
In a second aspect, an embodiment of the present invention provides a control device for a photovoltaic air conditioner, where the device is applied to a controller of the photovoltaic air conditioner, and the device includes:
the acquisition module is used for regularly acquiring photovoltaic power generation capacity and load power consumption when the grid is monitored to be off-grid and the photovoltaic air conditioner is started to operate; the load electricity consumption is the total electricity consumption consumed by a load device, and the load device is a photovoltaic air conditioner or a photovoltaic air conditioner and an electricity consumption device connected with the photovoltaic air conditioner;
the first determining module is used for determining the load power of the load device according to the load power consumption;
the second determining module is used for determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount; the reverse power protection interval is a power interval used for representing supply and demand balance between the generated power of the photovoltaic air conditioner and the load power of the load device;
and the control module is used for sending a power control signal to the power module of the photovoltaic air conditioner when the load power is not in the reverse power protection interval, so as to control the power generation power of the photovoltaic air conditioner until the load power is in the reverse power protection interval.
In a third aspect, an embodiment of the present invention provides an electronic device, including: the photovoltaic air conditioner control system comprises a processor and a memory, wherein the processor is used for executing a control program of the photovoltaic air conditioner stored in the memory so as to realize the photovoltaic air conditioner control method.
In a fourth aspect, an embodiment of the present invention provides a storage medium, where the storage medium stores one or more programs, and the one or more programs are executable by one or more processors to implement the above-mentioned control method of a photovoltaic air conditioner.
The control method, the device, the electronic equipment and the storage medium of the photovoltaic air conditioner provided by the embodiment of the invention comprise the steps of acquiring photovoltaic power generation amount and load power consumption at fixed time when the grid is monitored to be off-grid and the photovoltaic air conditioner is started to operate, determining load power of a load device according to the load power consumption, determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption, and transmitting a power control signal to a power module of the photovoltaic air conditioner when the load power is monitored to be not in the inverse power protection interval so as to control the power generation power of the photovoltaic air conditioner until the load power is in the inverse power protection interval. The reverse power protection interval is a power interval representing the supply and demand balance between the power generation power of the photovoltaic air conditioner and the load power of the load device, and it can be understood that if the load power of the load device is in the reverse power protection interval, the photovoltaic power generation amount of the photovoltaic air conditioner is identical to the load power consumption amount of the load device.
Drawings
Fig. 1 is a flowchart of an embodiment of a control method of a photovoltaic air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of an embodiment of another control method of a photovoltaic air conditioner according to an embodiment of the present invention;
fig. 3 is a block diagram of an embodiment of a control device of a photovoltaic air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
For the purpose of facilitating an understanding of the embodiments of the present invention, reference will now be made to the following description of specific embodiments, taken in conjunction with the accompanying drawings, which are not intended to limit the embodiments of the invention.
The embodiment of the invention provides a control method of a photovoltaic air conditioner, wherein the method is applied to a controller of the photovoltaic air conditioner, the controller can be understood as a control center of the photovoltaic air conditioner, the controller can be a central processing unit (Central Processing Unit, CPU), a corresponding operating system, a control interface and the like, particularly a digital logic controller such as an MCU (Microcontroller Unit, micro control unit) controller and the like which can be used for automatic control, a control instruction can be loaded into a memory at any time for storage and execution, and meanwhile, the controller can be internally provided with CPU instructions, a data memory, an input/output unit, a power module, a digital analog unit and the like, and particularly can be set according to actual use conditions.
Referring to fig. 1, a flowchart of an embodiment of a control method of a photovoltaic air conditioner is provided in an embodiment of the present invention. As shown in fig. 1, the process may include the steps of:
step 101, when the grid off-grid is monitored and a photovoltaic air conditioner is started to operate, the photovoltaic power generation amount and the load power consumption amount are obtained at regular time;
when the grid-outlet photovoltaic air conditioner is not connected to the grid, the photovoltaic power generation amount of the photovoltaic air conditioner and the load power consumption amount of the load device are obtained at regular time according to preset timing time after the photovoltaic air conditioner is off-grid and started up, wherein the timing time can be 10 seconds, 30 seconds, 1 minute, 2 minutes and the like, and the photovoltaic air conditioner can be specifically set according to actual needs without limitation.
The load electricity consumption is the total electricity consumption consumed by a load device, and the load device is a photovoltaic air conditioner or a photovoltaic air conditioner and an electricity consumption device connected with the photovoltaic air conditioner; and if the photovoltaic air conditioner operates and the electric device does not operate, the load electricity consumption is the electricity consumption of the photovoltaic air conditioner, and if the photovoltaic air conditioner and the electric device operate, the load electricity consumption is the sum of the electricity consumption of the photovoltaic air conditioner and the electricity consumption of the electric device.
The electric device is an electric device which is electrically connected with the photovoltaic air conditioner and consumes electric energy, such as an electric lamp, a sound box, a water fountain and the like, and when the electric device is specifically realized, the electric device and the photovoltaic air conditioner are electrically connected with an electric power monitoring instrument, the electric power monitoring instrument is used for recording the electric quantity of the electric device and the electric quantity of the photovoltaic air conditioner, and a controller of the photovoltaic air conditioner can acquire the load electric quantity recorded by the electric power monitoring instrument at regular time through a gateway.
102, determining the load power of a load device according to the load power consumption;
the load power is understood to be the power consumption of the load device.
Step 103, determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount;
the reverse power protection interval is a power interval used for representing supply and demand balance between the generated power of the photovoltaic air conditioner and the load power of the load device; the power interval that the load power of the load device is equal to the power generation power of the photovoltaic air conditioner is measured, and the power interval also shows that if the load power of the load device is in the reverse power protection interval, the load power consumption of the load device just consumes the photovoltaic power generation capacity generated by the photovoltaic air conditioner, and then the photovoltaic air conditioner does not have redundant power to be reversely sent to a power grid.
In this embodiment, the execution sequence of the step 102 and the step 103 is not limited, and it is understood that the step 102 and the step 103 may be executed simultaneously, or the step 103 may be executed after the step 102 is executed, or the step 102 may be executed after the step 103 is executed.
And 104, when the load power is not in the reverse power protection interval, sending a power control signal to a power module of the photovoltaic air conditioner to control the power generation power of the photovoltaic air conditioner until the load power is in the reverse power protection interval.
In photovoltaic power generation of the photovoltaic air conditioner, when the power generation power of the photovoltaic air conditioner is larger than the load demand of the power grid, reverse power is generated, namely the electric energy of the photovoltaic air conditioner flows to the power grid, the reverse power not only wastes energy, but also can cause negative effects on the power grid, in the embodiment, the electric energy generated by the photovoltaic air conditioner is just consumed by a load device, the reverse power generation can be effectively prevented, in particular, whether the load power of the load device is in a reverse power protection interval or not needs to be monitored, when the load power of the load device is not in the reverse power protection interval, the photovoltaic power generation capacity of the photovoltaic air conditioner is adjusted by controlling the power generation power of the photovoltaic air conditioner until the load power is in the reverse power protection interval, and the photovoltaic power generation capacity is equal to the load electric quantity, so that the surplus electric energy is effectively prevented from reversely transmitting to the power grid while the power generation waste of the photovoltaic air conditioner is avoided.
The control method of the photovoltaic air conditioner provided by the embodiment of the invention comprises the steps of acquiring photovoltaic power generation amount and load power consumption at fixed time when the grid is monitored to be off-grid and the photovoltaic air conditioner is started to operate, determining load power of a load device according to the load power consumption, determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption, and transmitting a power control signal to a power module of the photovoltaic air conditioner when the load power is monitored not to be in the inverse power protection interval so as to control the power generation power of the photovoltaic air conditioner until the load power is in the inverse power protection interval. The reverse power protection interval is a power interval representing the supply and demand balance between the power generation power of the photovoltaic air conditioner and the load power of the load device, and it can be understood that if the load power of the load device is in the reverse power protection interval, the photovoltaic power generation amount of the photovoltaic air conditioner is identical to the load power consumption amount of the load device.
Referring to fig. 2, a flowchart of an embodiment of another control method of a photovoltaic air conditioner according to an embodiment of the present invention is provided. The flow shown in fig. 2 is implemented based on the flow shown in fig. 1. As shown in fig. 2, the process may include the steps of:
step 201, when the grid off-grid is monitored and the photovoltaic air conditioner is started to operate, the photovoltaic power generation amount and the load power consumption amount are obtained at regular time;
step 202, acquiring and calculating the operation time length of an inverse power protection interval and the electricity utilization time length of a load device;
the power consumption time length is a timed time length, the operation time length is a calculation time length for calculating the reverse power protection interval, the operation time length is usually a preset time length value, and the operation time length is usually in millisecond level due to good calculation performance of the controller.
Step 203, determining an inverse power protection interval based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration and the operation duration;
the specific process of determining the reverse power protection interval can be implemented through steps A1 to A2:
a1, determining a unit reverse power value based on photovoltaic power generation amount, load power consumption amount, power consumption duration and operation duration;
the above-mentioned unit reverse power value is the maximum reverse power value of the reverse power protection interval, and in one embodiment, the unit reverse power value may be determined by the following formula:
P＝T 2* (Q g -Q f )/T 1 ；
wherein P represents a unit reverse power value, Q g Represents photovoltaic power generation amount, Q f Representing the power consumption of the load, T 1 Indicating the electricity consumption time length T 2 Indicating the duration of operation.
A2, determining an inverse power protection interval according to the preset inverse power value and the unit inverse power value; wherein the preset inverse power value is smaller than the unit inverse power value.
The preset reverse power value is the minimum reverse power value of the reverse power protection interval, and then the reverse power protection interval is: (preset inverse power value, unit inverse power value). Optionally, the preset inverse power value is 0, and of course, the preset inverse power value may also be other values, which are not limited herein.
Step 204, determining the load power of the load device based on the load power consumption and the power consumption duration;
specifically, the load power is obtained by dividing the load power consumption obtained at the current timing by the power consumption duration. For example, when the current time-acquired load electricity consumption is 50 watts, the electricity consumption time is 5 minutes, that is, the electricity consumption time is 1/12 hour, then the load power is: 50/(1/12) Watts.
Step 205, when it is monitored that the load power is equal to or greater than a unit reverse power value of the reverse power protection interval, a power increase control signal is sent to a power module of the photovoltaic air conditioner to control the power generation power of the photovoltaic air conditioner to be increased until the load power is in the reverse power protection interval;
if the load power of the load device is equal to or greater than the unit reverse power value, the load power exceeds the reverse power protection interval, which indicates that the photovoltaic power generation amount of the photovoltaic air conditioner is insufficient for the power consumption of the load device, so that the photovoltaic power generation amount of the photovoltaic air conditioner needs to be increased.
When the photovoltaic air conditioner is specifically realized, the photovoltaic air conditioner further comprises a power module connected with the controller, and the power module can directly control the power generation power of the photovoltaic air conditioner, so that when the controller monitors that the load power of the load device is equal to or larger than the unit reverse power value of the reverse power protection interval, a power increase control signal is sent to the power module, so that the power module controls the photovoltaic air conditioner to increase the power generation power, and further the photovoltaic power generation capacity of the photovoltaic air conditioner is increased, the photovoltaic power generation capacity of the photovoltaic air conditioner can just meet the load power consumption of the load device, and the power generation waste of the photovoltaic air conditioner is avoided, and meanwhile, the redundant power is effectively prevented from reversely transmitting power to a power grid.
And 206, when the load power is monitored to be equal to or smaller than the preset reverse power value of the reverse power protection interval, sending a power reduction control signal to a power module of the photovoltaic air conditioner so as to control the power generation power of the photovoltaic air conditioner to be reduced until the load power is in the reverse power protection interval.
If the load power of the load device is equal to or smaller than the preset reverse power value, the load power exceeds the reverse power protection interval, which means that the photovoltaic power generation amount of the photovoltaic air conditioner exceeds the power consumption of the load device, therefore, the photovoltaic power generation amount of the photovoltaic air conditioner needs to be reduced.
When the controller monitors that the load power of the load device is equal to or smaller than a preset reverse power value of a reverse power protection interval, a power reduction control signal is sent to the power module, so that the power module controls the photovoltaic air conditioner to reduce the power generation power, and further the photovoltaic power generation capacity of the photovoltaic air conditioner is reduced, the photovoltaic power generation capacity of the photovoltaic air conditioner can just meet the load power consumption of the load device, and the waste of power generation of the photovoltaic air conditioner is avoided, and meanwhile, the reverse power transmission of redundant power to a power grid is effectively prevented.
When the photovoltaic air conditioner is actually used, if the controller monitors that the load power of the load device is in the reverse power protection interval, a power increase control signal or power decrease control information is not required to be sent to the power module, and the photovoltaic air conditioner can be kept to continuously generate power with the current power.
In one embodiment, if the generated power of the photovoltaic air conditioner is controlled to be increased, and the increased photovoltaic generated energy is insufficient to meet the load electricity consumption of the load device, the photovoltaic air conditioner and the electric device can be connected to a power grid through an alternating current power distribution cabinet, and the power grid is used for supplying power.
According to the control method of the photovoltaic air conditioner, provided by the embodiment of the invention, the generated power of the photovoltaic air conditioner can be dynamically adjusted through the comparison of the load power and the reverse power protection interval, so that the supply and demand balance between the generated power and the load power is maintained, the photovoltaic power generation capacity of the photovoltaic air conditioner is ensured to be just consumed by a load device, the waste of the power generation of the photovoltaic air conditioner is avoided, and the reverse power transmission of redundant electric energy to a power grid is effectively prevented.
Referring to fig. 3, a block diagram of an embodiment of a control device of a photovoltaic air conditioner according to an embodiment of the present invention is provided. The device is applied to a controller of a photovoltaic air conditioner, as shown in fig. 3, and comprises:
the acquisition module 301 is configured to acquire photovoltaic power generation amount and load power consumption at regular time when the grid is monitored to be off-grid and the photovoltaic air conditioner is started to operate; the load electricity consumption is the total electricity consumption consumed by a load device, and the load device is a photovoltaic air conditioner or a photovoltaic air conditioner and an electricity consumption device connected with the photovoltaic air conditioner;
a first determining module 302, configured to determine a load power of the load device according to the load power consumption;
a second determining module 303, configured to determine an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount; the reverse power protection interval is a power interval used for representing supply and demand balance between the generated power of the photovoltaic air conditioner and the load power of the load device;
and the control module 304 is configured to send a power control signal to a power module of the photovoltaic air conditioner when it is detected that the load power is not in the reverse power protection interval, so as to control the generated power of the photovoltaic air conditioner until the load power is in the reverse power protection interval.
The control device of the photovoltaic air conditioner provided by the embodiment of the invention comprises the steps of acquiring photovoltaic power generation amount and load power consumption at fixed time when the grid is monitored to be off-grid and the photovoltaic air conditioner is started to operate, determining the load power of a load device according to the load power consumption, determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption, and transmitting a power control signal to a power module of the photovoltaic air conditioner when the load power is monitored not to be in the inverse power protection interval so as to control the power generation power of the photovoltaic air conditioner until the load power is in the inverse power protection interval. The reverse power protection interval is a power interval representing the supply and demand balance between the power generation power of the photovoltaic air conditioner and the load power of the load device, and it can be understood that if the load power of the load device is in the reverse power protection interval, the photovoltaic power generation amount of the photovoltaic air conditioner is identical to the load power consumption amount of the load device.
Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and an electronic device 500 shown in fig. 4 includes: at least one processor 501, memory 502, at least one network interface 504, and other user interfaces 503. The various components in the electronic device 500 are coupled together by a bus system 505. It is understood that bus system 505 is used to enable connected communications between these components. The bus system 505 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as bus system 505 in fig. 4.
The user interface 503 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, a trackball, a touch pad, or a touch screen, etc.).
It will be appreciated that the memory 502 in embodiments of the invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct memory bus RAM (Direct RambusRAM, DRRAM). The memory 502 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
In some implementations, the memory 502 stores the following elements, executable units or data structures, or a subset thereof, or an extended set thereof: an operating system 5021 and application programs 5022.
The operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 5022 includes various application programs such as a Media Player (Media Player), a Browser (Browser), and the like for realizing various application services. A program for implementing the method according to the embodiment of the present invention may be included in the application 5022.
In the embodiment of the present invention, the processor 501 is configured to execute the method steps provided by the method embodiments by calling a program or an instruction stored in the memory 502, specifically, a program or an instruction stored in the application 5022, for example, including:
when the grid off-grid is monitored and the photovoltaic air conditioner is started to operate, the photovoltaic power generation amount and the load power consumption amount are obtained at regular time; the load electricity consumption is the total electricity consumption consumed by a load device, and the load device is a photovoltaic air conditioner or a photovoltaic air conditioner and an electricity consumption device connected with the photovoltaic air conditioner;
determining the load power of a load device according to the load power consumption;
determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount; the reverse power protection interval is a power interval used for representing supply and demand balance between the generated power of the photovoltaic air conditioner and the load power of the load device;
and when the load power is not in the reverse power protection interval, a power control signal is sent to a power module of the photovoltaic air conditioner so as to control the power generation power of the photovoltaic air conditioner until the load power is in the reverse power protection interval.
In one possible embodiment, determining the reverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount includes:
acquiring and calculating the operation time length of the reverse power protection interval and the electricity utilization time length of the load device;
and determining an inverse power protection interval based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration and the operation duration.
In one possible embodiment, determining the reverse power protection interval based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration, and the operation duration includes:
determining a unit reverse power value based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration and the operation duration;
determining an inverse power protection interval according to the preset inverse power value and the unit inverse power value; wherein the preset inverse power value is smaller than the unit inverse power value.
In one possible embodiment, the unit reverse power value is determined by:
P＝T 2* (Q g -Q f )/T 1 ；
wherein P represents a unit reverse power value, Q g Represents photovoltaic power generation amount, Q f Representing the power consumption of the load, T 1 Indicating the electricity consumption time length T 2 Indicating the duration of operation.
In one possible embodiment, determining the load power of the load device according to the load power consumption includes:
the load power of the load device is determined based on the load power consumption and the power consumption duration.
In one possible embodiment, when it is detected that the load power is not in the reverse power protection interval, a power control signal is sent to a power module of the photovoltaic air conditioner to control the generated power of the photovoltaic air conditioner, including:
and when the load power is detected to be equal to or larger than the unit reverse power value of the reverse power protection interval, a power increasing control signal is sent to a power module of the photovoltaic air conditioner so as to control the power generation of the photovoltaic air conditioner to be increased.
In one possible embodiment, when it is detected that the load power is not in the reverse power protection interval, a power control signal is sent to a power module of the photovoltaic air conditioner to control the generated power of the photovoltaic air conditioner, including:
and when the load power is monitored to be equal to or smaller than a preset reverse power value of the reverse power protection interval, a power reduction control signal is sent to a power module of the photovoltaic air conditioner so as to control and reduce the generated power of the photovoltaic air conditioner.
The method disclosed in the above embodiment of the present invention may be applied to the processor 501 or implemented by the processor 501. The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in the processor 501. The processor 501 may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ApplicationSpecific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field ProgrammableGate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software elements in a decoding processor. The software elements may be located in a random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 502, and the processor 501 reads information in the memory 502 and, in combination with its hardware, performs the steps of the method described above.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (dspev, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented by means of units that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The electronic device provided in this embodiment may be an electronic device as shown in fig. 4, and may perform all steps of the control method of the photovoltaic air conditioner as shown in fig. 1-2, so as to achieve the technical effects of the control method of the photovoltaic air conditioner as shown in fig. 1-2, and the detailed description is omitted herein for brevity.
The embodiment of the invention also provides a storage medium (computer readable storage medium). The storage medium here stores one or more programs. Wherein the storage medium may comprise volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid state disk; the memory may also comprise a combination of the above types of memories.
When one or more programs in the storage medium are executable by one or more processors, the control method of the photovoltaic air conditioner is realized.
The processor is used for executing a control program of the photovoltaic air conditioner stored in the memory so as to realize the following steps of a control method of the photovoltaic air conditioner:
when the grid off-grid is monitored and the photovoltaic air conditioner is started to operate, the photovoltaic power generation amount and the load power consumption amount are obtained at regular time; the load electricity consumption is the total electricity consumption consumed by a load device, and the load device is a photovoltaic air conditioner or a photovoltaic air conditioner and an electricity consumption device connected with the photovoltaic air conditioner;
determining the load power of a load device according to the load power consumption;
determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount; the reverse power protection interval is a power interval used for representing supply and demand balance between the generated power of the photovoltaic air conditioner and the load power of the load device;
and when the load power is not in the reverse power protection interval, a power control signal is sent to a power module of the photovoltaic air conditioner so as to control the power generation power of the photovoltaic air conditioner until the load power is in the reverse power protection interval.
In one possible embodiment, determining the reverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount includes:
acquiring and calculating the operation time length of the reverse power protection interval and the electricity utilization time length of the load device;
and determining an inverse power protection interval based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration and the operation duration.
In one possible embodiment, determining the reverse power protection interval based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration, and the operation duration includes:
determining a unit reverse power value based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration and the operation duration;
determining an inverse power protection interval according to the preset inverse power value and the unit inverse power value; wherein the preset inverse power value is smaller than the unit inverse power value.
In one possible embodiment, the unit reverse power value is determined by:
P＝T 2* (Q g -Q f )/T 1 ；
wherein P represents a unit reverse power value, Q g Represents photovoltaic power generation amount, Q f Representing the power consumption of the load, T 1 Indicating the electricity consumption time length T 2 Indicating the duration of operation.
In one possible embodiment, determining the load power of the load device according to the load power consumption includes:
the load power of the load device is determined based on the load power consumption and the power consumption duration.
In one possible embodiment, when it is detected that the load power is not in the reverse power protection interval, a power control signal is sent to a power module of the photovoltaic air conditioner to control the generated power of the photovoltaic air conditioner, including:
and when the load power is detected to be equal to or larger than the unit reverse power value of the reverse power protection interval, a power increasing control signal is sent to a power module of the photovoltaic air conditioner so as to control the power generation of the photovoltaic air conditioner to be increased.
In one possible embodiment, when it is detected that the load power is not in the reverse power protection interval, a power control signal is sent to a power module of the photovoltaic air conditioner to control the generated power of the photovoltaic air conditioner, including:
and when the load power is monitored to be equal to or smaller than a preset reverse power value of the reverse power protection interval, a power reduction control signal is sent to a power module of the photovoltaic air conditioner so as to control and reduce the generated power of the photovoltaic air conditioner.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of function in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (10)

1. A control method of a photovoltaic air conditioner, wherein the method is applied to a controller of the photovoltaic air conditioner, and the method comprises:
when the grid is monitored to be off-grid and the photovoltaic air conditioner is started to operate, the photovoltaic power generation amount and the load power consumption amount are obtained at regular time; the load electricity consumption is the total electricity consumption consumed by a load device, and the load device is the photovoltaic air conditioner or the photovoltaic air conditioner and an electricity consumption device connected with the photovoltaic air conditioner;
determining the load power of the load device according to the load power consumption;
determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount; the reverse power protection interval is a power interval used for representing supply and demand balance between the generated power of the photovoltaic air conditioner and the load power of the load device;
and when the load power is not in the reverse power protection interval, sending a power control signal to a power module of the photovoltaic air conditioner so as to control the power generation power of the photovoltaic air conditioner until the load power is in the reverse power protection interval.
2. The method of claim 1, wherein the determining an inverse power protection interval based on the photovoltaic power generation amount and the load power usage amount comprises:
acquiring and calculating the operation time length of the reverse power protection interval and the electricity utilization time length of the load device;
and determining an inverse power protection interval based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration and the operation duration.
3. The method of claim 2, wherein the determining an inverse power protection interval based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration, and the operation duration comprises:
determining a unit reverse power value based on the photovoltaic power generation amount, the load power consumption amount, the power consumption duration and the operation duration;
determining an inverse power protection interval according to a preset inverse power value and the unit inverse power value; wherein the preset inverse power value is smaller than the unit inverse power value.
4. A method according to claim 3, wherein the unit reverse power value is determined by:
P＝T 2* (Q g -Q f )/T 1 ；
wherein P represents the unit reverse power value, Q g Representing the photovoltaic power generation amount, Q f Representing the power consumption of the load, T 1 Indicating the electricity consumption time length T 2 Representing the operation duration.
5. The method of claim 2, wherein said determining the load power of the load device from the load power consumption comprises:
and determining the load power of the load device based on the load electricity consumption and the electricity consumption duration.
6. The method of claim 3, wherein the sending a power control signal to the power module of the photovoltaic air conditioner to control the generated power of the photovoltaic air conditioner when the load power is not monitored to be in the reverse power protection interval comprises:
and when the load power is monitored to be equal to or larger than the unit reverse power value of the reverse power protection interval, a power increasing control signal is sent to a power module of the photovoltaic air conditioner so as to control the power generation power of the photovoltaic air conditioner to be increased.
7. The method of claim 3, wherein the sending a power control signal to the power module of the photovoltaic air conditioner to control the generated power of the photovoltaic air conditioner when the load power is not monitored to be in the reverse power protection interval comprises:
and when the load power is monitored to be equal to or smaller than the preset reverse power value of the reverse power protection interval, a power reduction control signal is sent to a power module of the photovoltaic air conditioner so as to control the reduction of the power generation power of the photovoltaic air conditioner.
8. A control device of a photovoltaic air conditioner, wherein the device is applied to a controller of the photovoltaic air conditioner, the device comprising:
the acquisition module is used for regularly acquiring photovoltaic power generation capacity and load power consumption when the grid is monitored to be off-grid and the photovoltaic air conditioner is started to operate; the load electricity consumption is the total electricity consumption consumed by a load device, and the load device is the photovoltaic air conditioner or the photovoltaic air conditioner and an electricity consumption device connected with the photovoltaic air conditioner;
the first determining module is used for determining the load power of the load device according to the load power consumption;
the second determining module is used for determining an inverse power protection interval based on the photovoltaic power generation amount and the load power consumption amount; the reverse power protection interval is a power interval used for representing supply and demand balance between the generated power of the photovoltaic air conditioner and the load power of the load device;
and the control module is used for sending a power control signal to the power module of the photovoltaic air conditioner when the load power is not in the reverse power protection interval, so as to control the power generation power of the photovoltaic air conditioner until the load power is in the reverse power protection interval.
9. An electronic device, comprising: a processor and a memory, the processor being configured to execute a control program of the photovoltaic air conditioner stored in the memory, to implement the control method of the photovoltaic air conditioner according to any one of claims 1 to 7.
10. A storage medium storing one or more programs executable by one or more processors to implement the method of controlling a photovoltaic air conditioner of any one of claims 1 to 7.
CN202311178643.0A 2023-09-12 2023-09-12 Control method and device of photovoltaic air conditioner, electronic equipment and storage medium Pending CN117293920A (en)

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CN202311178643.0A CN117293920A (en) 2023-09-12 2023-09-12 Control method and device of photovoltaic air conditioner, electronic equipment and storage medium

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