CN110247431B - Energy production building system and capacity allocation method thereof - Google Patents
Energy production building system and capacity allocation method thereof Download PDFInfo
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention discloses a capacity building system and a capacity configuration method thereof, wherein the capacity building system comprises a photovoltaic power generation system and an energy storage system, wherein: the photovoltaic power generation system and the energy storage system are used for supplying power to corresponding users; the energy storage power of the energy storage system is determined by the maximum difference value between the photovoltaic power generation output power of the photovoltaic power generation system and the electric load required by a user, the energy storage capacity of the energy storage system is determined according to the capacity required by keeping the energy balance between the photovoltaic power generation system and the energy storage system and the capacity required by independently supporting the important electric load for supplying power for a preset time, and the important electric load is the electric load meeting the set requirement for the user requirement degree. The invention provides a capacity building system and sets a configuration principle for the system, and reasonable allocation and utilization of resources can be realized through the capacity building system, so that the system capacity configuration principle is defined, and the system capacity configuration is convenient.
Description
Technical Field
The invention relates to the technical field of intelligent buildings, in particular to a capacity building system and an energy configuration method thereof.
Background
At the present stage, the energy consumption in the middle of a building is larger and larger, like the heating in the northern area, the power consumption load is larger and larger, the energy consumption is larger and larger when an air conditioner is used in the southern area in summer, the energy demand in the aspect of charging piles is larger and larger in the future, how to link photovoltaic/photothermal, strong electricity/weak electricity, energy storage/heat storage, charging piles and a data center to form an energy microgrid to be applied to an intelligent building is very important in the future development.
In recent years, ultra-low energy consumption buildings and near-zero energy consumption building demonstration projects in China are gradually developed to the ground, concepts of smart power grids and distributed energy sources are enhanced, building energy conservation in certain aspects is different from traditional building energy conservation, and the building energy conservation method becomes an important opportunity and platform for promoting building energy conservation work in China. The former buildings are mostly considered in terms of energy utilization, and the current buildings are mainly considered in terms of energy production.
At present, the cost of solar energy is lower and lower, and the technology of thin film batteries is also rapidly developed. In the future, monocrystalline silicon, polycrystalline silicon, thin films, photothermal and some novel technologies will be applied more and more widely on roofs and surfaces of buildings. By fully utilizing the building surface and the environmental energy, the annual energy generation is more than the energy consumption, thereby realizing the energy balance, namely 'energy production building'.
Disclosure of Invention
The invention provides a capacity building system and an energy allocation method thereof, which solve the problem of energy design and allocation scheme in the aspect of capacity-free buildings in the prior art.
In order to solve the above technical problems, the present invention provides a capacity building system and an energy allocation method thereof, which specifically include:
according to a first aspect of the invention, there is provided a power generation building system comprising a photovoltaic power generation system and an energy storage system, wherein:
the photovoltaic power generation system and the energy storage system are used for supplying power to corresponding users;
the energy storage power of the energy storage system is determined by the maximum difference value between the photovoltaic power generation output power of the photovoltaic power generation system and the electric load required by a user, the energy storage capacity of the energy storage system is determined according to the capacity required by keeping the energy balance between the photovoltaic power generation system and the energy storage system and the capacity required by independently supporting the important electric load for supplying power for a preset time, and the important electric load is the electric load meeting the set requirement for the user requirement degree.
In one possible implementation, the photovoltaic power generation system comprises a first photovoltaic power generation system belonging to the same at least one user, and the energy storage system comprises a first energy storage system belonging to the same at least one user;
the energy storage power of the first energy storage system is determined by the maximum difference value between the photovoltaic power generation output power of the first photovoltaic power generation system and the electric load required by a user to which the first energy storage system belongs, and the energy storage capacity of the first energy storage system is determined according to the capacity required by keeping the energy balance between the first photovoltaic power generation system and the first energy storage system and the capacity required by independently supporting the important electric load for a preset power supply time.
In one possible implementation, the energy storage system further comprises a second energy storage system belonging to all users in the energy production building system;
the energy storage power of the second energy storage system is determined by the maximum difference value between the total photovoltaic power generation output power of all the first photovoltaic power generation systems and the electric loads required by all the users and the calculated power of the total important electric loads of the capacity building system, and the energy storage capacity of the second energy storage system is determined according to the capacity required by keeping the energy balance between all the first photovoltaic power generation systems and the second energy storage system and the capacity required by independently supporting the important electric loads for a preset power supply time.
In one possible implementation, the energy production building system comprises a user with the first energy storage system and a user without the first energy storage system; the energy storage power of the second energy storage system is determined by the maximum difference value between the total photovoltaic power generation output power of all the first photovoltaic power generation systems and the electrical loads required by all the users and the calculated power of the total important electrical loads of the capacity building system, and the method comprises the following steps:
the energy storage power of the second energy storage system is determined by the total photovoltaic power generation output power of the first photovoltaic power generation systems of all the users with the first energy storage systems, the maximum difference value of the electrical loads required by all the users with the first energy storage systems, the total photovoltaic power generation output power of the first photovoltaic power generation systems of all the users without the first energy storage systems, the maximum difference value of the electrical loads required by all the users with the fifth energy storage systems, and the calculated power of the total important electrical loads of the capacity building system.
In one possible implementation, the capacity building system further includes:
the first energy management system belongs to the same at least one user, and is used for managing equipment in a first photovoltaic power generation system and a first energy storage system of the user and performing energy scheduling with other users.
In one possible implementation, the capacity building system further includes:
and the second energy management system belongs to all users in the energy production building system, is used for managing all equipment in the first photovoltaic power generation system, the first energy storage system and the second energy storage system of the energy production building system, and can schedule energy for all the users.
In one possible implementation, the capacity building system further includes:
and the capacity of the solar water heating system is determined according to the daily water consumption and the water temperature of the user.
In one possible implementation, the capacity building system further includes:
an air source heat pump system belonging to the same at least one user, the capacity of the air source heat pump system being determined by the maximum of the user's cold and heat loads.
According to a second aspect of the present invention, a capacity allocation method for a capacity building system comprises:
acquiring photovoltaic power generation output power of a photovoltaic power generation system and an electric load required by a user;
determining the energy storage power of the energy storage system according to the maximum difference value of the photovoltaic power generation output power of the photovoltaic power generation system and the electrical load required by a user;
and configuring the capacity of the energy storage system according to the capacity required by keeping the energy balance between the photovoltaic power generation system and the energy storage system and the capacity required by independently supporting an important electric load for a preset time, wherein the important electric load is an electric load meeting the set requirement for the user demand degree.
In one possible implementation manner, acquiring photovoltaic power generation output power of a first photovoltaic power generation system belonging to the same at least one user and an electric load required by the belonging user;
determining the energy storage power of the energy storage system according to the maximum difference value between the photovoltaic power generation output power of the photovoltaic power generation system and the electrical load required by a user, wherein the determining step comprises the following steps:
determining the energy storage power of a first energy storage system according to the maximum difference between the photovoltaic power generation output power of the first photovoltaic power generation system and the electrical load required by a user to which the first energy storage system belongs;
configuring the capacity of the energy storage system according to the capacity required by keeping the energy balance between the photovoltaic power generation system and the energy storage system and the capacity required by independently supporting the important electric load for a preset power supply time, wherein the configuration comprises the following steps:
and configuring the capacity of the first energy storage system according to the capacity required by keeping the energy balance between the first photovoltaic power generation system and the first energy storage system and the capacity required by independently supporting the important electric load for supplying power for a preset time.
In a possible implementation manner, acquiring the total photovoltaic power generation output power of all the first photovoltaic power generation systems and the electric loads required by all users of the capacity building system;
determining the energy storage power of the energy storage system according to the maximum difference value between the photovoltaic power generation output power of the photovoltaic power generation system and the electrical load required by a user, and further comprising:
and determining the energy storage power of the second energy storage system belonging to all the users in the energy production building system according to the maximum difference value between the total photovoltaic power generation output power of all the first photovoltaic power generation systems and the electrical loads required by all the users and the calculated power of the total important electrical loads of the energy production building system.
In one possible implementation, the method further includes: and determining the capacity of the solar water heating system belonging to the same at least one user according to the daily water consumption and the water temperature of the same at least one user.
In one possible implementation, the method further includes: determining the capacity of the air source heat pump system belonging to the same at least one user according to the maximum value in the cold and heat loads of the same at least one user.
In one possible implementation, the method further includes: and determining the photovoltaic power generation output power according to the maximum available area of the energy-producing building.
In one possible implementation, when the photovoltaic power generation output power of the photovoltaic power generation system is less than the electrical load required by a user, determining a capacity E1 required for keeping the photovoltaic power generation system and the energy storage system in energy balance;
determining a capacity E2 required for maintaining energy balance of the photovoltaic power generation system and the energy storage system when the photovoltaic power generation output power of the photovoltaic power generation system is larger than the electrical load required by a user;
determining the capacity E3 required by the power supply for a preset time to be capable of independently supporting important electric loads;
determining the maximum value of the capacity E1, the capacity E2 and the capacity E3 as the capacity E of the energy storage system.
Compared with the prior art, the capacity configuration method of the capacity building system provided by the invention has the following advantages and beneficial effects:
by the capacity building system, reasonable distribution and utilization of resources can be realized, the system capacity configuration principle is defined, and the system capacity configuration is facilitated.
Drawings
FIG. 1 is a schematic diagram of a capacity building system according to one embodiment;
FIG. 2 is a schematic view of a photovoltaic power generation system according to a first embodiment;
FIG. 3 is a schematic diagram of a first energy storage system according to an embodiment;
FIG. 4 is a schematic diagram of a second energy storage system according to an embodiment;
FIG. 5 is a schematic diagram of a capacity building system according to an embodiment;
fig. 6 is a flowchart illustrating a capacity allocation method for a capacity building system according to the second embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto.
Example one
The invention provides a power generation building system, as shown in fig. 1, the power generation building system comprises a photovoltaic power generation system 110 and an energy storage system 120, wherein:
the photovoltaic power generation system 110 and the energy storage system 120 are used for supplying power to corresponding users;
the energy storage power of the energy storage system 120 is determined by the maximum difference between the photovoltaic power output power of the photovoltaic power generation system 110 and the electrical load required by the user, the energy storage capacity of the energy storage system is determined according to the capacity required by keeping the energy balance between the photovoltaic power generation system 110 and the energy storage system 120 and the capacity required by independently supporting the important electrical load for a preset time period of power supply, and the important electrical load is the electrical load meeting the set requirement for the user requirement degree.
Optionally, as shown in fig. 2, the photovoltaic power generation system 110 is formed by connecting a photovoltaic module 111 and a grid-connected inverter 112;
the photovoltaic module converts the light energy into electric energy, and the generated direct current is converted into alternating current meeting the requirements of the commercial power grid through a grid-connected inverter and then is connected to a public power grid or an energy storage system 120.
The photovoltaic power generation system comprises a first photovoltaic power generation system belonging to the same at least one user.
In the implementation, the photovoltaic power generation system can be configured by utilizing the utilization to the maximum extent, and the generated surplus energy can be transmitted and distributed on the internet while the requirement of building energy consumption is met. And determining the photovoltaic power generation output power of the photovoltaic power generation system according to the maximum available area of the energy production building, wherein the photovoltaic power generation output power is greater than the important load power demand of a user in principle.
Specifically, the photovoltaic power generation output power of the photovoltaic power generation system is configured as follows:
PPV＝kS
wherein S is the maximum mountable photovoltaic system area of the energy production building, and k is the mountable photovoltaic system capacity per unit area.
Optionally, the energy storage system includes a first energy storage system belonging to the same at least one user, and the first energy storage system and the first photovoltaic power generation system belong to the same user energy storage system;
as shown in fig. 3, the first energy storage system is formed by connecting a storage battery 121 and a grid-connected inverter 122;
the first energy storage system enables the energy generated by the first photovoltaic power generation system to have schedulability, can be incorporated into or withdrawn from a power grid as required, and also has the function of a standby power supply, so that emergency power supply can be realized when the power grid has power failure due to reasons.
The energy storage power of the first energy storage system is determined by the maximum difference value between the photovoltaic power generation output power of the corresponding first photovoltaic power generation system and the electric load required by the user to which the first energy storage system belongs, and the energy storage capacity of the first energy storage system is determined according to the capacity required by keeping the energy balance between the first photovoltaic power generation system and the first energy storage system and the capacity required by independently supporting the important electric load for a preset power supply time.
As an alternative embodiment, for the first photovoltaic power generation system and the first energy storage system belonging to the user i, the power P of the first energy storage systemBiThe maximum difference between the photovoltaic power generation output power of the first photovoltaic power generation system of the user i and the electric load required by the user i at any time t in the year is satisfied.
At a certain time t, the generated power P of the user ipvi(t), (i e1, 2 … n-1), then PBi(t)＞Ppvi(t)-PLi(t) wherein PLiAn electrical load required for user i;
optionally, determining a capacity E1 required for maintaining energy balance between the first photovoltaic power generation system and the first energy storage system when the photovoltaic power generation output power of the first photovoltaic power generation system is smaller than the electrical load required by a user;
determining a capacity E2 required to maintain energy balance between the first photovoltaic power generation system and the first energy storage system when the photovoltaic power generation output power of the first photovoltaic power generation system is greater than the electrical load required by a user;
determining a capacity E3 required to be able to independently support power for a predetermined period of time to a significant electrical load required by a user in the first photovoltaic power generation system;
determining the maximum value of the capacity E1, the capacity E2 and the capacity E3 as the capacity E of the first energy storage system.
Specifically, the first energy storage system of the user i should keep the user energy balance when the photovoltaic output power P ispvi(t) less than the total load power P of the userLi(t) the energy released by the energy storage device should balance the load demand, and the energy storage capacity E1 during the time delta tAiIt should satisfy:
E1Ai≥Δt*[PLi(t)-Ppvi(t)]；
when photovoltaic output power Ppvi(t) is greater than PLi(t) the energy absorbed by the energy storage device should balance the load demand, and the energy storage capacity E2 during the time Δ tAiIt should satisfy:
E2Ai≥Δt*[Ppvi(t)-PLi(t)]；
the first energy storage system can guarantee continuous power supply of important loads in a period of time when the first energy storage system operates independently, for example, the first energy storage system can supply power continuously for two hours, and the power supply time length of the first energy storage system which can operate independently is not limited;
configuring the capacity of the first energy storage system according to the important electrical load requirement of a user i to which the first energy storage system belongs, wherein the capacity configuration of the first energy storage system meets E3Ai≥2*PAiIn which P isAiPower requirements of important electrical loads for the user;
therefore, the first energy storage system capacity E corresponding to the user iAiThe method comprises the following steps:
EAi＝max{E1Ai,E2Ai,E3Ai}。
in practice, as shown in fig. 5, a power generation building system includes at least one customer energy storage system 510, the customer energy storage system 510 includes the first photovoltaic power generation system 511, and optionally includes the first energy storage system 512, and the customer energy storage system can operate in a grid-connected mode or an off-grid mode.
Optionally, as shown in fig. 5, the energy storage system further includes a second energy storage system 520 belonging to all users in the energy-producing building system, where all users in the energy-producing building system include users with the first energy storage system 512 and users without the first energy storage system 512; as shown in fig. 4, the second energy storage system is composed of an energy storage battery 401 and an energy storage inverter 402; through the second energy storage system, a user can use shared energy storage resources at any time as required, the user rents for use and pays as required, the complementarity of the user is fully utilized, the efficient reuse of energy storage entity equipment is realized, the scale effect is fully utilized, meanwhile, the manufacturing cost of a large-scale energy storage unit is centralized and lower, and the efficient operation of energy storage is realized through a centralized operation optimization strategy.
The energy storage power of the second energy storage system is determined by the maximum difference value between the total photovoltaic power generation output power of all the first photovoltaic power generation systems and the electric loads required by all the users and the calculated power of the total important electric loads of the energy production building system, and the energy storage capacity of the second energy storage system is determined according to the capacity required by keeping the energy balance between all the first photovoltaic power generation systems and the second energy storage system and the capacity required by independently supporting the power supply for the important electric loads required by all the users in the energy production building system for a preset time. Specifically, firstly, analyzing the power consumption requirements of all users in the energy production building, dividing the building power loads into important power loads and general power loads, and counting the total power load requirements of all the users and the important power load requirements of all the users, namely counting the power load requirements of the users without the first energy storage system and the total power load requirements of the users without the first energy storage system;
power P of the second energy storage systemBThe maximum difference value of the electric load requirements of all users with the total output power of all the first voltage generating systems at any time t in one year is required to be met;
determining the power of a second energy storage system which meets the condition that the power t at any time is larger than the maximum difference value between the total output power of the first photovoltaic power generation system and the total electric load demand for all users with the first energy storage system in the energy production building system
Power P of the second energy storage systemBAnd the condition that each user without the first energy storage system in the energy production building has a maximum difference value between the total output power of the photovoltaic power generation and the load at any time t in one year is also met.
Determining the power of a second energy storage system satisfying the maximum difference between the total power output of the first photovoltaic power generation system and the total electric load demand at any time t for all users without the first energy storage system
At a certain moment t, the total generated power P of the energy-storage-free user 1 in the building bodypv1(t), total load P of non-energy-storage user 1L1(t), total generated power P of non-energy-storage user 2pv2(t), total load P of non-energy-storage user 2L2(t), total generating power P of non-energy-storage user mpvm(t), total load P of non-energy-storage user mLm(t) of (d). Wherein (m is equal to 1,2 … n-1)
The second energy storage system should maintain energy balance of the energy production building system when the photovoltaic output power PPV(t) is less thanTotal load power PL(t) the energy released by the energy storage device should be able to balance the load demand, the energy storage capacity E during the time Δ tBIt should satisfy:
E1B≥Δt*[PL(t)-PPV(t)]；
when photovoltaic output power rate PPV(t) greater than the total building load power PL(t) the energy absorbed by the energy storage device should balance the load demand and the energy storage capacity E during the time Δ tBIt should satisfy:
E2B≥Δt*[PPV(t)-PL(t)]；
the second energy storage system can guarantee continuous power supply of important loads in a period of time when the second energy storage system operates independently, for example, the second energy storage system can supply power continuously for two hours, and the power supply time of the second energy storage system which can operate independently is not limited;
configuring the capacity of the second energy storage system according to the important electrical load requirements of the capacity building system, wherein the capacity configuration of the second energy storage system meets E3B≥2*PBiIn which P isBiThe power demand for producing the building important electrical loads;
thus, the second energy storage system capacity EBThe method comprises the following steps:
EB＝max{E1B,E2B,E3B}。
optionally, the capacity building system further includes:
the first energy management system 513 belongs to the same at least one user, and is configured to implement control and management on devices in the first photovoltaic power generation system and the first energy storage system of the belonging user through communication, and perform energy scheduling with other users.
Optionally, the capacity building system further includes:
the second energy management system 530 belongs to all users in the energy production building system, and is used for managing all devices in the first photovoltaic power generation system, the first energy storage system and the second energy storage system of the energy production building system, and performing energy scheduling on all the users.
Optionally, the capacity building system further includes:
a solar water heating system 514 belonging to the same at least one user, the capacity of which is determined according to the user's daily water consumption and water temperature.
Specifically, the central heat collector system and the household heat collector system are used for calculating the heat collection area and the water storage tank according to the relevant standards:
the total area of the system heat collector is calculated according to the following regulations:
1) the total area of the direct system heat collector can be determined according to the daily water consumption and the water temperature of a user, and is calculated according to the following formula:
wherein Ac-total area of direct system collector, m2(ii) a Qw-daily average water usage, kg; cw is the constant pressure specific heat capacity of water, kJ/(kg. DEG C); tend-the design temperature of the water in the tank, deg.C; ti — initial temperature of water, ° c; JT is average daily solar radiation on the lighting surface of the local heat collector, kJ per square meter; f-solar guarantee rate,%; comprehensively considering factors such as solar irradiation, system economy, user requirements and the like in the service life of the system, and determining the ratio to be 30-80%; η cd — the annual average heat collection efficiency of the collector; the value is preferably 0.25-0.50 according to experience, and the specific value is determined according to the actual test result of the heat collector product; η L-rate of heat loss from the tank and piping; the value is preferably 0.20-0.30 according to experience.
2) The total area of the indirect system heat collector can be calculated according to the following formula:
wherein AIN-total area of indirect system heat collector, m2(ii) a FRUL-Total Heat loss coefficient of Heat collector, W/(m)2DEG C.); for flat plate collector, FRUL is preferably 4-6W/(m)2DEG C.); to vacuum tube heat collectorPreferably, FRUL is 1-2W/(m)2DEG C.); the specific numerical value is determined according to the actual test result of the heat collector product; Uhx-Heat transfer coefficient of Heat exchanger, W/(m)2DEG C.); ahx-heat exchange area of heat exchanger, m2。
Optionally, the capacity building system further includes:
an air source heat pump system 515 belonging to the same at least one user, the capacity of which is determined by the maximum of the user's cold and heat load.
In particular, the capacity P of the air source heat pump system of the user ixi＝max{Phi,PciIn which P ishiFor the thermal load demand of user i, PciIs the cooling load demand of user i.
Example two
The present embodiment is a method for configuring energy of a capacity building system, as shown in fig. 6, the method includes:
601, acquiring photovoltaic power generation output power of a photovoltaic power generation system and electric load required by a user;
step 602, determining the energy storage power of the energy storage system according to the maximum difference between the photovoltaic power generation output power of the photovoltaic power generation system and the electrical load required by a user;
step 603, configuring the capacity of the energy storage system according to the capacity required by keeping the energy balance between the photovoltaic power generation system and the energy storage system and the capacity required by independently supporting important electric loads for a preset time, wherein the important electric loads are electric loads of which the user demand degree meets the set requirement.
Optionally, acquiring photovoltaic power generation output power of a first photovoltaic power generation system belonging to the same at least one user and an electrical load required by the user;
acquiring photovoltaic power generation output power of a first photovoltaic power generation system belonging to the same at least one user and an electric load required by the user;
determining the energy storage power of the energy storage system according to the maximum difference value between the photovoltaic power generation output power of the photovoltaic power generation system and the electrical load required by a user, wherein the determining step comprises the following steps:
determining the energy storage power of a first energy storage system according to the maximum difference between the photovoltaic power generation output power of the first photovoltaic power generation system and the electrical load required by a user to which the first energy storage system belongs;
configuring the capacity of the energy storage system according to the capacity required by keeping the energy balance between the photovoltaic power generation system and the energy storage system and the capacity required by independently supporting the important electric load for a preset power supply time, wherein the configuration comprises the following steps:
and configuring the capacity of the first energy storage system according to the capacity required by keeping the energy balance between the first photovoltaic power generation system and the first energy storage system and the capacity required by independently supporting the important electric load for supplying power for a preset time.
Optionally, acquiring the total photovoltaic power generation output power of all the first photovoltaic power generation systems and the electric loads required by all users of the capacity building system;
determining the energy storage power of the energy storage system according to the maximum difference value between the photovoltaic power generation output power of the photovoltaic power generation system and the electrical load required by a user, and further comprising:
and determining the energy storage power of the second energy storage system belonging to all the users in the energy production building system according to the maximum difference value between the total photovoltaic power generation output power of all the first photovoltaic power generation systems and the electrical loads required by all the users and the calculated power of the total important electrical loads of the energy production building system.
Optionally, the capacity of the solar water heating system belonging to the same at least one user is determined according to the daily water consumption and the water temperature of the same at least one user.
Optionally, the capacity of the air source heat pump system belonging to the same at least one user is determined according to the maximum value of the same at least one user cold and heat load.
Optionally, the photovoltaic power generation output power is determined according to the maximum available area of the energy-producing building.
Optionally, determining a capacity E1 required for maintaining energy balance between the photovoltaic power generation system and the energy storage system when the photovoltaic power generation output power of the photovoltaic power generation system is less than the electrical load required by a user;
determining a capacity E2 required for maintaining energy balance of the photovoltaic power generation system and the energy storage system when the photovoltaic power generation output power of the photovoltaic power generation system is larger than the electrical load required by a user;
determining the capacity E3 required by the power supply for a preset time to be capable of independently supporting important electric loads;
determining the maximum value of the capacity E1, the capacity E2 and the capacity E3 as the capacity E of the energy storage system.
The principle of the method for solving the problems is similar to that of the system, so the implementation of the method can be referred to the implementation of the system, and repeated details are not repeated.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (14)
1. A power generation building system, comprising a photovoltaic power generation system and an energy storage system, wherein:
the energy production building system comprises users with the first energy storage system and users without the first energy storage system; the photovoltaic power generation system comprises a first photovoltaic power generation system belonging to the same at least one user, and the energy storage system comprises a first energy storage system belonging to the same at least one user and a second energy storage system belonging to all users in the energy production building system;
the photovoltaic power generation system and the energy storage system are used for supplying power to corresponding users;
the energy storage power of the energy storage system is determined by the maximum difference value between the photovoltaic power generation output power of the photovoltaic power generation system and the electrical load required by a user, the energy storage capacity of the energy storage system is determined according to the capacity required by keeping the energy balance between the photovoltaic power generation system and the energy storage system and the capacity required by independently supporting important electrical loads for supplying power for a preset time, and the important electrical loads are the electrical loads meeting the set requirements for the user requirement degree;
the energy storage power of the first energy storage system is determined by the maximum difference value of the photovoltaic power generation output power of the first photovoltaic power generation system and the electric load required by the user to which the first energy storage system belongs;
the energy storage power of the second energy storage system is determined by the total photovoltaic power generation output power of the first photovoltaic power generation systems of all the users with the first energy storage systems, the maximum difference value of the electrical loads required by all the users with the first energy storage systems, the total photovoltaic power generation output power of the first photovoltaic power generation systems of all the users without the first energy storage systems, the maximum difference value of the electrical loads required by all the users without the first energy storage systems, and the calculated power of the total important electrical loads of the capacity building system.
2. The system of claim 1, wherein the energy storage capacity of the first energy storage system is determined based on a capacity required to maintain energy balance between the first photovoltaic power generation system and the first energy storage system and a capacity required to independently support the important electrical loads for a predetermined period of time.
3. The system of claim 1,
and the energy storage capacity of the second energy storage system is determined according to the capacity required by keeping the energy balance of all the first photovoltaic power generation systems and the second energy storage system and the capacity required by independently supporting the important electric load for a preset time.
4. The system of claim 1, wherein the energy production building system further comprises:
the first energy management system belongs to the same at least one user, and is used for managing equipment in a first photovoltaic power generation system and a first energy storage system of the user and performing energy scheduling with other users.
5. The system of claim 1, wherein the energy production building system further comprises:
and the second energy management system belongs to all users in the energy production building system, is used for managing all equipment in the first photovoltaic power generation system, the first energy storage system and the second energy storage system of the energy production building system, and can schedule energy for all the users.
6. The system of claim 1, wherein the energy production building system further comprises:
and the capacity of the solar water heating system is determined according to the daily water consumption and the water temperature of the user.
7. The system of claim 1, wherein the energy production building system further comprises:
an air source heat pump system belonging to the same at least one user, the capacity of the air source heat pump system being determined by the maximum of the user's cold and heat loads.
8. The capacity configuration method of the capacity building system is characterized in that the capacity building system comprises a photovoltaic power generation system and an energy storage system, the photovoltaic power generation system comprises a first photovoltaic power generation system belonging to the same at least one user, and the energy storage system comprises a first energy storage system belonging to the same at least one user and a second energy storage system belonging to all users in the capacity building system;
the method comprises the following steps:
acquiring photovoltaic power generation output power of a photovoltaic power generation system and an electric load required by a user;
determining the energy storage power of the energy storage system according to the maximum difference value of the photovoltaic power generation output power of the photovoltaic power generation system and the electrical load required by a user;
the energy storage power of the first energy storage system is determined according to the maximum difference value of the photovoltaic power generation output power of the first photovoltaic power generation system and the electrical load required by a user to which the first energy storage system belongs; determining the energy storage power of a second energy storage system belonging to all users in the energy production building system according to the maximum difference value between the total photovoltaic power generation output power of all the first photovoltaic power generation systems and the electrical loads required by all the users and the calculated power of the total important electrical loads of the energy production building system;
and configuring the capacity of the energy storage system according to the capacity required by keeping the energy balance between the photovoltaic power generation system and the energy storage system and the capacity required by independently supporting an important electric load for a preset time, wherein the important electric load is an electric load meeting the set requirement for the user demand degree.
9. The method of claim 8, wherein obtaining the photovoltaic power output power of the photovoltaic power generation system and the electrical load required by the user comprises:
acquiring photovoltaic power generation output power of a first photovoltaic power generation system and an electric load required by a user;
configuring the capacity of the energy storage system according to the capacity required by keeping the energy balance between the photovoltaic power generation system and the energy storage system and the capacity required by independently supporting the important electric load for a preset power supply time, wherein the configuration comprises the following steps:
and configuring the capacity of the first energy storage system according to the capacity required by keeping the energy balance between the first photovoltaic power generation system and the first energy storage system and the capacity required by independently supporting the important electric load for supplying power for a preset time.
10. The method of claim 8, wherein obtaining the photovoltaic power output of the photovoltaic power generation system and the electrical load required by the user further comprises:
and acquiring the total photovoltaic power generation output power of all the first photovoltaic power generation systems and the electric loads required by all users of the capacity building system.
11. The method of claim 9, further comprising:
and determining the capacity of the solar water heating system belonging to the same at least one user according to the daily water consumption and the water temperature of the same at least one user.
12. The method of claim 9, further comprising:
determining the capacity of the air source heat pump system belonging to the same at least one user according to the maximum value in the cold and heat loads of the same at least one user.
13. The method of claim 8, further comprising:
and determining the photovoltaic power generation output power according to the maximum available area of the energy-producing building.
14. The method of claim 9, wherein the configuring the energy storage system capacity based on the capacity required to maintain the energy balance between the photovoltaic power generation system and the energy storage system and the capacity required to independently support the vital electrical loads for a predetermined period of time comprises:
determining a capacity E1 required to maintain energy balance between the photovoltaic power generation system and the energy storage system when the photovoltaic power generation output power of the photovoltaic power generation system is less than the electrical load required by a user;
determining a capacity E2 required for maintaining energy balance of the photovoltaic power generation system and the energy storage system when the photovoltaic power generation output power of the photovoltaic power generation system is larger than the electrical load required by a user;
determining the capacity E3 required by the power supply for a preset time to be capable of independently supporting important electric loads;
determining the maximum value of the capacity E1, the capacity E2 and the capacity E3 as the capacity E of the energy storage system.
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