CN114374212A - Photovoltaic air conditioner and electric energy distribution method thereof - Google Patents
Photovoltaic air conditioner and electric energy distribution method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000009826 distribution Methods 0.000 title claims abstract description 20
- 238000010248 power generation Methods 0.000 claims abstract description 59
- 238000004146 energy storage Methods 0.000 claims abstract description 53
- 238000005286 illumination Methods 0.000 claims description 29
- 230000005611 electricity Effects 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 6
- 238000004378 air conditioning Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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
- F24F11/46—Improving electric energy efficiency or saving
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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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- 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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
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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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0075—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source according to economic or energy efficiency considerations, e.g. economic dispatch
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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
- H02J3/12—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
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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
- H02J3/381—Dispersed generators
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
- F24F2005/0067—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy with photovoltaic panels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/10—Weather information or forecasts
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
- Y04S20/244—Home appliances the home appliances being or involving heating ventilating and air conditioning [HVAC] units
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a photovoltaic air conditioner and an electric energy distribution method thereof. The electric energy distribution method of the photovoltaic air conditioner comprises the following steps: acquiring geographical position information and weather information of a photovoltaic air conditioner; and formulating power supply priority of the photovoltaic air conditioner for the power generation, energy storage unit and commercial power of the photovoltaic air conditioner according to the geographical position information or the geographical position information and the weather information. According to the photovoltaic air conditioner and the control method thereof, corresponding strategies are formulated to distribute electric energy according to different positions of the photovoltaic air conditioner and different weather, so that the maximum light energy utilization efficiency is realized.
Description
Technical Field
The invention relates to the technical field of photovoltaic air conditioners, in particular to an electric energy distribution method of a photovoltaic air conditioner.
Background
The existing photovoltaic air conditioning system needs to realize the combination of an air conditioner external unit, a photovoltaic inverter and an energy storage unit for converting light energy into electric energy to supply the electric energy to an air conditioner for use and storing redundant electric energy, and has the disadvantages of difficult construction and installation and high manufacturing cost, so that the air conditioning system integrating the air conditioner external unit, the inverter module and the energy storage unit is needed. When the existing photovoltaic air conditioning system is used in photovoltaic power generation, the photovoltaic power generation directly supplies power to the air conditioning side, the generated energy cannot meet the power consumption of the air conditioner, the alternating current mains supply is automatically accessed for supply, the generated energy exceeds the power consumption of the air conditioner, and the redundant generated energy can be fed back to the mains supply power grid to obtain income or be selectively connected with the energy storage unit module for storage. The mode has low efficiency, is not energy-saving, and can not switch different power utilization modes with maximum efficiency according to the illumination conditions and the photoelectric conversion conditions of different weather and different climate areas according to local conditions.
Disclosure of Invention
The invention provides a photovoltaic air conditioner and an electric energy distribution method thereof, and aims to solve the technical problem that an electric energy distribution scheme of the photovoltaic air conditioner in the prior art is single.
The invention provides an electric energy distribution method of a photovoltaic air conditioner, which comprises the following steps:
acquiring geographical position information and weather information of a photovoltaic air conditioner;
and formulating power supply priority of the photovoltaic air conditioner for the power generation, energy storage unit and commercial power of the photovoltaic air conditioner according to the geographical position information or the geographical position information and the weather information.
Further, the address location information includes altitude information and/or climate zone information.
Further, when the altitude of the photovoltaic air conditioner is higher than a preset altitude, if the refrigeration demand in summer is judged to be less than or equal to a preset refrigeration amount based on weather information, the power supply priority is that the energy storage unit is greater than photovoltaic power generation and the commercial power is greater than the commercial power; and/or if the heating demand in winter based on the weather information is greater than the preset heating amount, the power supply priority is that the photovoltaic power generation is greater than the commercial power and the energy storage unit.
Further, when the climate area information of the photovoltaic air conditioner is a hot climate area or a mild climate area, the power supply priority is that the energy storage unit is larger than the photovoltaic power generation unit and larger than the commercial power.
Further, the electric energy distribution method of the photovoltaic air conditioner further comprises the following steps: and setting power utilization priorities of the photovoltaic air conditioner, the energy storage unit and the commercial power according to weather information or climate area information.
Further, if the temperature of the next time period is greater than the preset temperature and the illumination intensity is greater than the preset illumination intensity based on the weather information, the power utilization priority of the photovoltaic air conditioner power generation is that the photovoltaic air conditioner is greater than the energy storage unit and the power grid.
Further, if the temperature of the next time period is greater than the preset temperature and the illumination intensity is less than or equal to the preset illumination intensity based on the weather information, and the air conditioner load of the current time period is less than or equal to the preset load, the power utilization priority of the photovoltaic air conditioner power generation is that the energy storage unit is greater than the photovoltaic air conditioner and the power grid is greater than the photovoltaic air conditioner.
Further, if the temperature of the next time period is greater than the preset temperature and the illumination intensity is less than or equal to the preset illumination intensity based on the weather information, and the air conditioner load of the current time period is greater than the preset load, the power utilization priority of the photovoltaic air conditioner power generation is that the photovoltaic air conditioner is greater than the energy storage unit and the power grid.
Further, if the temperature of the next time period is less than or equal to the preset temperature and the illumination intensity is greater than the preset illumination intensity based on the weather information, the power utilization priority of the photovoltaic air conditioner power generation is that the photovoltaic air conditioner is greater than the energy storage unit and the power grid.
Further, when the climate region information of the photovoltaic air conditioner is hot in summer and cold in winter, the priority of power utilization of the photovoltaic air conditioner for power generation is the highest in the energy storage unit in spring and autumn.
Further, when the climate region information where the photovoltaic air conditioner is located is a cold climate region, the priority of power utilization of photovoltaic air conditioner power generation is the highest in the energy storage unit in spring, summer and autumn.
Further, when the climate region information of the photovoltaic air conditioner is hot in summer and cold in winter, the priority of power utilization of photovoltaic air conditioner power generation is the highest in the energy storage unit in spring, autumn and autumn.
The photovoltaic air conditioner provided by the invention comprises a controller, wherein the controller distributes electric energy by adopting the electric energy distribution method of the photovoltaic air conditioner.
Further, the photovoltaic air conditioner is a light storage integrated air conditioner.
According to the invention, a distribution strategy according to local conditions is formulated according to the distribution of the geographical position information and the weather information to the electric energy of the photovoltaic air conditioner, and the mode switching of power generation, power utilization and energy storage of the photovoltaic air conditioner can be reasonably controlled, so that the light energy utilization efficiency is maximized, and the whole life cycle of the air conditioner is more energy-saving.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is a flow chart of an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the invention, and does not imply that every embodiment of the invention must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
The electric energy distribution method of the photovoltaic air conditioner comprises the following steps of distributing the electric energy of the photovoltaic air conditioner in two aspects, wherein the specific part of the electric energy is discharged according to the electricity consumption of the photovoltaic air conditioner to supply power to the photovoltaic air conditioner. And the other is that for the power generation of the photovoltaic air conditioner, the power generation of the photovoltaic air conditioner specifically flows to which part.
The electric energy distribution method of the invention is described below aiming at the power consumption of the photovoltaic air conditioner, and the source of the total power consumption P of the air conditioner is divided into 3 ways: the photovoltaic power generation supply of the photovoltaic air conditioner is defined as PPower generation(ii) a ② obtaining P from commercial power networkCommercial power(ii) a Obtaining P from energy storage unitEnergy storage. The total power consumption of the air conditioner at the same time is P = PPower generation+ PCommercial power+ PEnergy storageAnd if the three devices supply power to the air conditioner at the same time.
As shown in fig. 1, the present invention obtains geographical location information and weather information of a photovoltaic air conditioner. And formulating power supply priority of the photovoltaic air conditioner for the power generation, energy storage unit and commercial power of the photovoltaic air conditioner according to the geographical position information or the geographical position information and the weather information.
In one embodiment, the photovoltaic air conditioner acquires geographical location information and weather information through a wireless communication module, such as a DTU module. Wherein the address location information includes altitude information and/or climate zone information.
According to the position or longitude and latitude information detected by the DTU module in the air conditioner, the air conditioner is divided into different altitude areas according to the altitude of different areas, area definition is carried out on the different altitude areas, and the different altitude areas execute different power utilization priorities.
| Altitude height | Region definition |
| Less than 1000m | AL1 |
| 1000~2000m | AL2 |
| 2000~3000m | AL3 |
| 3000~4000m | AL4 |
| More than 4000 | AL5 |
TABLE 1 different altitudes are defined as different altitude zones
When the altitude of the photovoltaic air conditioner is higher than the preset altitude, if the refrigeration demand in summer is judged to be less than or equal to the preset refrigeration amount based on the weather information, the power supply priority is that the energy storage unit is larger than the photovoltaic power generation and larger than the commercial power, and/or if the heating demand in winter is larger than the preset heating amount based on the weather information, the power supply priority is that the photovoltaic power generation and larger than the commercial power and larger than the energy storage unit. The higher the altitude is, the higher the illumination intensity is, the higher the energy storage of the illumination intensity in the high altitude area is relatively sufficient, but the refrigeration demand in the high altitude area in summer is not high, and the total power consumption P of the air conditioner should be preferentially obtained from the energy storage unit, then from the photovoltaic power generation and finally from the commercial power. The heating demand in winter is high, and the high power consumption of air conditioner is mostly in winter, and in this season P should be preferentially acquireed from photovoltaic power generation, then acquireed from the commercial power, and the energy storage is acquireed from the energy storage after full storage.
According to the position or longitude and latitude information detected by the DTU module, different geographical positions are divided into different climate areas, such as a hot climate area, a hot summer and warm winter climate area, a mild climate area, a hot summer and cold winter climate area and a cold climate area, and the areas are defined aiming at the different climate areas, as shown in the following table 2. And different air conditioner power consumption priorities are executed in different climate zones.
| Climate zone division | Region definition |
| Hot climate zone | CZ1 |
| Hot in summer and warm in winter climate zone | CZ2 |
| Temperate climate zone | CZ3 |
| Cool weather zone in summer and hot winter | CZ4 |
| Cold climate zone | CZ5 |
TABLE 2 regional definition by different climate zones
The climate zones of the invention are divided according to the dimensional conditions of the zones and the annual climate conditions, wherein the temperature of the hot climate zones is above 25 ℃ in more than 80% of the year, and the hot climate zones are in hot climate in most of the time. Such as singapore, thailand, etc. The temperature is above 25 ℃ in the hot summer and warm winter climate region in which the temperature is above 60% of the whole year and the climate is hot in summer; the winter is warm. Such as areas of Guangdong, hong Kong, Taiwan, etc. The temperate climate zone is moderate climate all year round, such as Sichuan, Yunnan and other areas. The cold weather area is hot in summer and cold in winter, and is clear in four seasons, such as Jianghu and Zhejiang Shanghai. The cold climate region is a region with the temperature lower than 20 ℃ in more than 50% of the whole year, such as northern regions of Beijing, Nemeng and the like.
When the climate area information of the photovoltaic integrated air conditioner is a hot climate area or a mild climate area, the power supply priority is that the energy storage unit is larger than the photovoltaic power generation unit and larger than the commercial power. The annual air conditioning load in hot climatic zones is high. The annual air conditioning load in temperate climatic zones is not high. The total power consumption P of the air conditioners in the two climate areas should preferably meet the current energy-saving strategy, and is obtained from the energy storage unit, then from the photovoltaic power generation and finally from the commercial power.
The electric energy distribution method of the present invention is explained below with respect to the photovoltaic power generation current of a photovoltaic air conditioner.
Photovoltaic power generation is divided into 3 uses: the photovoltaic air conditioner is supplied with power for use; feeding back to a power grid of the commercial power to obtain power generation income; and thirdly, the energy storage unit is used for storage and reserved for subsequent use.
A day time is divided into a plurality of time periods, wherein the time periods are morning, noon, afternoon, evening and night, the conditions of photovoltaic power generation are different according to different weather conditions (such as temperature conditions and illumination conditions) of each time period, and the requirements of air conditioner cold and hot loads are different. Therefore, the power utilization priority of the photovoltaic air conditioner, the energy storage unit and the commercial power is set according to the weather information or the climate area information.
If the temperature of the next time period is higher than the preset temperature and the illumination intensity is higher than the preset illumination intensity based on the weather information, the power utilization priority of the photovoltaic air conditioner is that the photovoltaic air conditioner is higher than the energy storage unit and the power grid. For example, if the DTU module detects that the air temperature in the next time period is obviously increased in the current time period, the sunlight intensity is also obviously enhanced, the load demand of the photovoltaic air conditioner in the next time period is increased, the power consumption demand is increased, and the photovoltaic power generation capacity is also increased, the photovoltaic power generation in the current time period should preferentially meet the requirement of supplying power to the air conditioner for use, the redundant power generation capacity is used for storing energy, and if the energy storage unit is fully stored, the photovoltaic power generation is fed back to the power grid to obtain the income.
If the temperature of the next time period is greater than the preset temperature and the illumination intensity is less than or equal to the preset illumination intensity based on the weather information, and the air conditioner load of the current time period is less than or equal to the preset load, the power utilization priority of the photovoltaic air conditioner power generation is that the energy storage unit is greater than the photovoltaic air conditioner and the power grid is greater than the power grid. For example, in the current time period, if the DTU module detects that the air temperature in the next time period is obviously increased, the sunlight intensity is not changed greatly or weakened, which indicates that the air-conditioning load demand in the next time period will increase the power consumption demand and increase, but the photovoltaic power generation amount will not increase and may decrease.
If the temperature of the next time period is greater than the preset temperature and the illumination intensity is less than or equal to the preset illumination intensity based on the weather information, and the air conditioner load of the current time period is greater than the preset load, the power utilization priority of the photovoltaic air conditioner power generation is that the photovoltaic air conditioner is greater than the energy storage unit and is greater than the power grid. For example, if the air conditioner load demand in the current time period is not high, the photovoltaic power generation should preferentially store energy, and if the energy storage unit is fully stored, the energy is consumed by the air conditioner; if the air conditioner load requirement in the current time period is high, the photovoltaic power generation in the current time period should preferentially meet the requirement of supplying power to the air conditioner, and the redundant power generation amount is used for storing energy.
If the temperature of the next time period is less than or equal to the preset temperature and the illumination intensity is greater than the preset illumination intensity based on the weather information, the power utilization priority of the photovoltaic air conditioner power generation is that the photovoltaic air conditioner is greater than the energy storage unit and the power grid. For example, if the DTU detects that the air temperature in the next time period is obviously reduced and the sunshine intensity is obviously enhanced in the current time period, the load demand of the air conditioner in the next time period is reduced, the power consumption demand is reduced, but the photovoltaic power generation capacity is improved, the photovoltaic power generation in the current time period should preferentially meet the demand of supplying power to the air conditioner, the surplus power generation capacity is used for storing energy, and if the energy storage unit is fully stored, the surplus power generation capacity is fed back to the power grid to obtain the income.
In addition, when the climate area information of the photovoltaic air conditioner is hot in summer and cold in winter, the priority of power utilization of the photovoltaic air conditioner for power generation is the highest in the energy storage unit in spring and autumn. The air conditioning load is high in summer and winter in cold and warm weather areas and in summer and winter. In spring and autumn, photovoltaic power generation is mostly used for energy storage for use in winter and summer.
When the climate region information of the photovoltaic air conditioner is in a cold climate region, the priority of power utilization of photovoltaic air conditioner power generation is the highest in the energy storage unit in spring, summer and autumn. The air conditioning load in the cold climate zone is low in summer and high in winter. In spring, summer and autumn, photovoltaic power generation is mostly used for storing energy for use in winter.
When the climate area information of the photovoltaic air conditioner is the hot summer and the cold winter, the priority of power utilization of photovoltaic air conditioner power generation is the highest in the energy storage unit in spring, autumn and autumn. The summer air-conditioning load demand of the hot summer and warm winter climate zone is high, and the winter air-conditioning load is low. In spring, autumn and winter, photovoltaic power generation is mostly used for storing energy for summer use.
The invention also protects a corresponding photovoltaic air conditioner, which comprises a controller, wherein the controller distributes electric energy by adopting the electric energy distribution method of the photovoltaic air conditioner in the technical scheme. The photovoltaic air conditioner of the invention includes but is not limited to a light storage integrated air conditioner.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (14)
1. A method for distributing electric energy of a photovoltaic air conditioner is characterized by comprising the following steps:
acquiring geographical position information and weather information of a photovoltaic air conditioner;
and formulating power supply priority of the photovoltaic air conditioner for the power generation, energy storage unit and commercial power of the photovoltaic air conditioner according to the geographical position information or the geographical position information and the weather information.
2. The power distribution method of the photovoltaic air conditioner as claimed in claim 1, wherein the address location information includes altitude information and/or climate zone information.
3. The electric energy distribution method of the photovoltaic air conditioner as claimed in claim 2, wherein when the altitude of the photovoltaic air conditioner is higher than the preset altitude, if the refrigeration demand in summer is judged to be less than or equal to the preset refrigeration capacity based on the weather information, the power supply priority is that the energy storage unit is greater than photovoltaic power generation and the commercial power is greater than the commercial power; and/or if the heating demand in winter based on the weather information is greater than the preset heating amount, the power supply priority is that the photovoltaic power generation is greater than the commercial power and the energy storage unit.
4. The method for distributing the electric energy of the photovoltaic air conditioner as claimed in claim 2, wherein when the climate zone information of the photovoltaic air conditioner is a hot climate zone or a mild climate zone, the priority of power supply is that the energy storage unit is larger than the photovoltaic power generation unit and is larger than the commercial power.
5. The electric energy distribution method of the photovoltaic air conditioner as claimed in any one of claims 2 to 4, further comprising:
and setting power utilization priorities of the photovoltaic air conditioner, the energy storage unit and the commercial power according to weather information or climate area information.
6. The method for distributing electric energy to the photovoltaic air conditioners according to claim 5, wherein if the temperature of the next time period is higher than the preset temperature and the illumination intensity is higher than the preset illumination intensity based on the weather information, the priority of electricity utilization for generating electricity by the photovoltaic air conditioners is that the photovoltaic air conditioners are larger than the energy storage units and the power grid is larger than the preset illumination intensity.
7. The method for distributing electric energy to photovoltaic air conditioners of claim 5, wherein if the temperature of the next time period is higher than the preset temperature and the illumination intensity is less than or equal to the preset illumination intensity based on the weather information, and the air conditioner load of the current time period is less than or equal to the preset load, the power utilization priority of the photovoltaic air conditioner for generating power is that the energy storage unit is greater than the photovoltaic air conditioner and the power grid is greater.
8. The method for distributing electric energy to photovoltaic air conditioners of claim 5, wherein if the temperature of the next time period is higher than the preset temperature and the illumination intensity is less than or equal to the preset illumination intensity based on the weather information, and the air conditioner load of the current time period is higher than the preset load, the electricity utilization priority of the photovoltaic air conditioner for generating electricity is that the photovoltaic air conditioner is greater than the energy storage unit and greater than the power grid.
9. The method for distributing electric energy to the photovoltaic air conditioners according to claim 5, wherein if the temperature of the next time period is less than or equal to the preset temperature and the illumination intensity is greater than the preset illumination intensity based on the weather information, the priority of electricity utilization for generating electricity by the photovoltaic air conditioners is that the photovoltaic air conditioners are greater than the energy storage units and the power grid.
10. The method for distributing electric energy to the photovoltaic air conditioners according to claim 5, wherein when the climate region information of the photovoltaic air conditioners is hot in summer, cold in winter, and the climate region information of the photovoltaic air conditioners is cold in summer, the priority of electricity utilization for power generation of the photovoltaic air conditioners is the highest in the energy storage units in spring and autumn.
11. The method for distributing the electric energy of the photovoltaic air conditioner as claimed in claim 5, wherein when the climate zone information where the photovoltaic air conditioner is located is a cold climate zone, the priority of electricity utilization for power generation of the photovoltaic air conditioner is highest in spring, summer and autumn for the energy storage unit.
12. The method for distributing electric energy to the photovoltaic air conditioners according to claim 5, wherein when the climate region information of the photovoltaic air conditioners is hot in summer, cold in winter, and the climate region information of the photovoltaic air conditioners is cold in summer, the priority of electricity utilization for power generation of the photovoltaic air conditioners is highest in spring, autumn and autumn.
13. A photovoltaic air conditioner comprising a controller, wherein the controller distributes electric energy by using the electric energy distribution method of the photovoltaic air conditioner according to any one of claims 1 to 12.
14. The photovoltaic air conditioner of claim 13, wherein the photovoltaic air conditioner is a light storage integrated air conditioner.
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| CN202111620350.4A CN114374212A (en) | 2021-12-28 | 2021-12-28 | Photovoltaic air conditioner and electric energy distribution method thereof |
| PCT/CN2022/107863 WO2023124042A1 (en) | 2021-12-28 | 2022-07-26 | Photovoltaic air conditioner and electric energy distribution method therefor |
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| CN202111620350.4A CN114374212A (en) | 2021-12-28 | 2021-12-28 | Photovoltaic air conditioner and electric energy distribution method thereof |
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Cited By (2)
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| CN116007089A (en) * | 2022-12-14 | 2023-04-25 | 珠海格力电器股份有限公司 | Photovoltaic air conditioning system and control method thereof |
| WO2023124042A1 (en) * | 2021-12-28 | 2023-07-06 | 珠海格力电器股份有限公司 | Photovoltaic air conditioner and electric energy distribution method therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117833346B (en) * | 2024-03-04 | 2024-05-14 | 湖南璟泰信息系统有限公司 | Photovoltaic and power grid complementary direct-current energy-saving air conditioner power supply method and system |
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| WO2023124042A1 (en) | 2023-07-06 |
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