Energy storage system capacity calculation method of building light storage direct flexible system

Abstract

The invention provides an energy storage system capacity calculation method and device of a building light storage direct-flexible system and electronic equipment. The method comprises the steps that the flexible load performance of the light storage direct-flexible system is determined; determining system power and adjustable capacity of each window period of the optical storage direct-flexible system at least according to the flexible load performance; determining the power of the energy storage system of the optical storage direct-flexible system in each window period according to the difference between the sum of the system power of the optical storage direct-flexible system in each window period and the adjustable capacity and the target power; and determining the charging capacity and the discharging capacity required by the energy storage system, and selecting the larger capacity value in the charging capacity and the discharging capacity as the capacity of the energy storage system. According to the energy storage system capacity calculation method and device of the building light storage direct-flexible system and the electronic equipment provided by the embodiment of the invention, it can be ensured that the calculated energy storage capacity meets the index requirements of evaluation standards strictly according to a flexible index calculation formula in Building Light Storage Direct-flexible System Evaluation Standard TCABEE 055-2023.

Description

Technical Field

[0001] The present invention relates to the technical field of building photovoltaics-energy storage-direct current-softness, and in particular, to a method, device, electronic device, and computer-readable storage medium for calculating the capacity of an energy storage system of a building photovoltaics-energy storage-direct current-softness system. Background Art

[0002] For the calculation of the energy storage capacity of a building photovoltaics-energy storage-direct current-softness system, currently common methods include the economic operation calculation method based on time-of-use electricity prices, the mismatch method based on the photovoltaic accommodation rate, and various calculation methods derived from photovoltaic-energy storage microgrids. However, these several calculation methods do not involve system flexibility calculation.

[0003] In 2024, the China Building Energy Conservation Association issued the "Evaluation Standard for Building Photovoltaics-Energy Storage-Direct Current-Softness System" TCABEE 055-2023, which has strict calculation methods and regulations for the flexibility index of the photovoltaics-energy storage-direct current-softness system. Currently, there is no energy storage calculation method in China for the "Evaluation Standard for Building Photovoltaics-Energy Storage-Direct Current-Softness System" TCABEE 055-2023. Summary of the Invention

[0004] To solve the existing technical problems, embodiments of the present invention provide a method, device, electronic device, and computer-readable storage medium for calculating the capacity of an energy storage system of a building photovoltaics-energy storage-direct current-softness system.

[0005] In a first aspect, embodiments of the present invention provide a method for calculating the capacity of an energy storage system of a building photovoltaics-energy storage-direct current-softness system, including: determining the flexible load performance of the photovoltaics-energy storage-direct current-softness system according to the equipment operation requirements; determining the system power and adjustable capacity of each window period of the photovoltaics-energy storage-direct current-softness system at least according to the flexible load performance, human comfort, and equipment usage habits; determining the power of each window period of the energy storage system of the photovoltaics-energy storage-direct current-softness system according to the difference between the sum of the system power and the adjustable capacity of each window period of the photovoltaics-energy storage-direct current-softness system and the target power; determining the charging capacity and discharging capacity required by the energy storage system by integrating the power of each window period of the energy storage system, and selecting the larger value of the charging capacity and the discharging capacity as the energy storage system capacity.

[0006] Optionally, the calculation method of the target power includes: simulating the 8760-hour energy consumption data of the building photovoltaics-energy storage-direct current-softness system according to the building characteristics, and selecting the typical days in summer and winter as the basic data for flexible calculation; according to the "Guidelines for Monitoring the Effect of Demand Response and Evaluating Comprehensive Benefits" GB / T 32127-2015, selecting the simulation data of the first 10 working days or the first 4 non-working days before the typical day as the basis for calculating the basic load, and taking the hourly average of the whole day as the target power for the flexible adjustment calculation.

[0007] Optionally, the flexible load performance of the photovoltaic-storage-direct-current-soft system includes: the flexible electrical load of the building lighting system, the flexible electrical load of the building air-conditioning system, the flexible electrical load of the building socket system, the flexible electrical load of the charging pile system, and other flexible electrical loads.

[0008] Optionally, the calculation formula for the flexible electrical load power of the photovoltaic-storage-direct-current-soft system at time t is: P t = P l + P a + P s + P c + P o ; where P l , P a , P s , P c , and P o are the simulated powers of the flexible electrical load of the building lighting system, the flexible electrical load of the building air-conditioning system, the flexible electrical load of the building socket system, the flexible electrical load of the charging pile system, and the other flexible electrical loads at time t, respectively.

[0009] Optionally, the calculation formula for the adjustable capacity of the flexible electrical load of the photovoltaic-storage-direct-current-soft system at time t is: ΔP t = ΔP t,l + ΔP t,a + ΔP t,s + ΔP t,c + ΔP t,o ; where ΔP t,l , ΔP t,a , ΔP t,s , ΔP t,c , and ΔP t,o are the adjustable capacities of the flexible electrical load of the building lighting system, the flexible electrical load of the building air-conditioning system, the flexible electrical load of the building socket system, the flexible electrical load of the charging pile system, and the other flexible electrical loads at time t, respectively.

[0010] Optionally, the calculation formula for the power of the energy storage system at each window period of the photovoltaic-storage-direct-current-soft system is: P t,e = P t * -(P t + ΔP t ); where P t,e is the simulated power of the energy storage system at time t, P t * is the target power of the photovoltaic-storage-direct-current-soft system, P t is the flexible electrical load power of the photovoltaic-storage-direct-current-soft system at time t, and ΔP t is the adjustable capacity of the flexible electrical load of the photovoltaic-storage-direct-current-soft system at time t.

[0011] Optionally, the calculation formula for the charging capacity required by the energy storage system is: Q charge = ∫ max{Pt,e , 0}dt; The calculation formula for the discharge capacity required by the energy storage system is: Q_discharge = ∫|min{P t,e , 0}|dt; where P t,e is the simulated power of the energy storage system at time t.

[0012] In a second aspect, an energy storage system capacity calculation device for a building optical storage direct current flexible system according to an embodiment of the present invention includes: a flexible load performance determination module, an adjustable capacity calculation module, an energy storage system power calculation module, and an energy storage system capacity calculation module; the flexible load performance determination module is configured to determine the flexible load performance of the optical storage direct current flexible system according to the equipment operation requirements; the adjustable capacity calculation module is configured to determine the system power and adjustable capacity of each window period of the optical storage direct current flexible system at least according to the flexible load performance, human comfort, and equipment usage habits; the energy storage system power calculation module is configured to determine the power of each window period of the energy storage system of the optical storage direct current flexible system according to the difference between the sum of the system power and the adjustable capacity of each window period of the optical storage direct current flexible system and the target power; the energy storage system capacity calculation module is configured to determine the charging capacity and discharge capacity required by the energy storage system by integrating the power of each window period of the energy storage system, and select the larger value of the charging capacity and the discharge capacity as the energy storage system capacity.

[0013] In a third aspect, an electronic device according to an embodiment of the present invention includes a processor and a memory, the memory stores a computer program, the processor executes the computer program stored in the memory, and when the computer program is executed by the processor, the energy storage system capacity calculation method of the building optical storage direct current flexible system described in the first aspect above is implemented.

[0014] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the energy storage system capacity calculation method of the building optical storage direct current flexible system described in the first aspect above is implemented.

[0015] In a fifth aspect, the present application further provides a computer program product, including a computer program, and when the computer program is executed, the energy storage system capacity calculation method of the building optical storage direct current flexible system described in the first aspect or any possible design manner of the first aspect can be implemented.

[0016] The energy storage system capacity calculation method, device, electronic device and computer-readable storage medium of the building integrated photovoltaics, energy storage, direct current and flexible (BIPV-ES-DC-F) system provided by the embodiments of the present invention can strictly calculate according to the calculation formula of the flexibility index in the "Evaluation Standard for Building Integrated Photovoltaics, Energy Storage, Direct Current and Flexible System" TCABEE 055-2023, ensuring that the calculated energy storage capacity meets the index requirements of the evaluation standard. Among them, the flexibility process in the standard is divided into single adjustment and continuous adjustment. Since the energy storage capacity required for single adjustment is much smaller than that for continuous adjustment, the embodiments of the present invention provide a calculation method for continuous adjustment. When the energy storage capacity meets the index requirements of continuous adjustment, it can also meet the energy storage capacity required for single adjustment. That is to say, the method provided by the embodiments of the present invention is not only a calculation method for energy storage according to the "Evaluation Standard for Building Integrated Photovoltaics, Energy Storage, Direct Current and Flexible System" TCABEE 055-2023, but also a calculation method that can meet the energy storage capacity required for both continuous adjustment and single adjustment. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background art, the following will describe the drawings required to be used in the embodiments of the present invention or the background art.

[0018] Figure 1 The flowchart of a method for calculating the energy storage system capacity of a building integrated photovoltaics, energy storage, direct current and flexible (BIPV-ES-DC-F) system provided by an embodiment of the present invention is shown;

[0019] Figure 2 The structural schematic diagram of a device for calculating the energy storage system capacity of a building integrated photovoltaics, energy storage, direct current and flexible (BIPV-ES-DC-F) system provided by an embodiment of the present invention is shown;

[0020] Figure 3 The structural schematic diagram of an electronic device for executing a method for calculating the energy storage system capacity of a building integrated photovoltaics, energy storage, direct current and flexible (BIPV-ES-DC-F) system provided by an embodiment of the present invention is shown. Detailed Embodiments

[0021] The following describes the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention.

[0022] Figure 1 The flowchart of a method for calculating the energy storage system capacity of a building integrated photovoltaics, energy storage, direct current and flexible (BIPV-ES-DC-F) system provided by an embodiment of the present invention is shown. This calculation method is mainly used for BIPV-ES-DC-F systems, virtual power plants, and demand-side response to calculate the energy storage system capacity configured to meet their flexibility indicators. As Figure 1 shown, the method includes the following steps 101-104.

[0023] Step 101: Determine the flexible load performance of the BIPV-ES-DC-F system according to the equipment operation requirements.

[0024] In the embodiments of the present invention, when designing and operating a building integrated photovoltaic, energy storage, DC power distribution, and flexible AC system (BIPV-ESS-DC-FAC), it is necessary to evaluate and determine the flexible load performance in the system according to the specific operating requirements of each device. Among them, the device operating requirements refer to the conditions and standards that the device needs to meet during normal operation, including but not limited to power range, response time, operating mode, safety standards, etc. For example: The power range refers to the minimum and maximum power at which the device can operate safely; the response time refers to the time required for the device to start adjusting the power actually from receiving the control signal; the operating mode refers to whether the device operates continuously or intermittently and whether there is a specific operating cycle, etc.; the safety standards refer to the safety specifications and standards that the device needs to meet during operation, such as overload protection, short-circuit protection, etc.

[0025] Specifically, the flexible loads of the BIPV-ESS-DC-FAC system are generally electrical loads, including adjustable-power DC lighting, DC air conditioners, DC sockets, charging piles, V2G (Vehicle-to-Grid, a technology that interconnects electric vehicles and the power grid) charging piles, etc. Loads with non-adjustable power are generally regarded as rigid loads, and flexible sources include all flexible electrical loads and energy storage systems.

[0026] Optionally, the flexible load performance of the BIPV-ESS-DC-FAC system includes: flexible electrical loads of the building lighting system, flexible electrical loads of the building air conditioning system, flexible electrical loads of the building socket system, flexible electrical loads of the charging pile system, and other flexible electrical loads.

[0027] Among them, the flexible electrical loads of the building lighting system correspond to the electrical loads generated by the building flexible lighting system, generally including adjustable-power office lighting, public area lighting, landscape, floodlighting, and other flexible lighting systems. The flexible electrical loads of the building air conditioning system correspond to the electrical loads generated by the building flexible air conditioning system, generally including indoor air conditioners, outdoor air conditioners, central air conditioners, chilled water storage air conditioners, etc. Since the DC socket system is generally directly connected to adjustable-power DC small appliances, such as DC coffee machines, DC small refrigerators, etc., the DC socket can also be regarded as a flexible load. Generally speaking, the power of the charging pile system can be adjusted as needed within the rated power, so the charging pile system can be regarded as a flexible load. Charging piles are generally divided into DC charging piles, AC charging piles, and V2G charging piles. Among them, the V2G charging pile can send power to the building in the reverse direction, and the power sent is not higher than its rated power. The energy storage system of civil buildings generally includes forms such as energy storage batteries, ice storage, and phase change material thermal storage. V2G charging piles and battery swapping devices can also be considered as a special form of energy storage due to their function of sending power to the building.

[0028] Step 102: Determine the system power and adjustable capacity of each window period of the BIPV-ESS-DC-FAC system at least according to the flexible load performance, human comfort, and device usage habits.

[0029] In the embodiments of the present invention, the adjustable capacity of each time window of the photovoltaic-storage-direct-current-soft (PV-SD-DC-S) system not only depends on the device characteristics of the flexible load itself (such as the power adjustment range and response speed of the device), but is also closely related to factors such as human comfort, device usage habits, and operation requirements. For example, for a direct-current air-conditioning system, on the premise of ensuring indoor temperature comfort, by adjusting the operating parameters of the air conditioner, its power can be adjusted up and down within a certain range, and this range is the load adjustment potential of the air-conditioning system within the corresponding time window, that is, the adjustable capacity of the PV-SD-DC-S system within the corresponding time window. In addition, it is also necessary to determine the system power, which is the simulated power.

[0030] Step 103: Determine the power of the energy storage system of the PV-SD-DC-S system for each time window according to the difference between the sum of the system power and the adjustable capacity of each time window of the PV-SD-DC-S system and the target power.

[0031] In the calculation, since the target power of the PV-SD-DC-S system can be calculated, therefore, by fully adjusting the operating power of the flexible load of the system, the system operating power can be made to tend to the target power, and the insufficient part is supplemented by the energy storage system. Therefore, based on the difference between the sum of the system power and the adjustable capacity of each time window of the PV-SD-DC-S system determined in the above step 102 and the known target power, for example, the difference between the target power minus the sum of the system power (i.e., the system simulated power) and the adjustable capacity, the power that the energy storage system needs to supplement can be determined, that is, the power of the energy storage system for each time window.

[0032] Step 104: Determine the charging capacity and discharging capacity required by the energy storage system by integrating the power of the energy storage system for each time window, and select the larger value of the charging capacity and the discharging capacity as the energy storage system capacity.

[0033] Based on the above step 103, by integrating the power of the energy storage system, the capacity requirement of the energy storage system can be calculated. Assuming that the system continuously adjusts starting from 0:00, according to the user's energy consumption habits, generally late at night is the low electricity consumption period, and energy storage and charging of the charging pile are required; at noon is the high electricity consumption period, and energy storage and V2G system discharging are required. Therefore, the energy storage capacity should be calculated for the charging section capacity and the discharging section capacity respectively. By comparing the sizes, the larger one of the charging capacity and the discharging capacity is determined, and the larger value of the charging capacity and the discharging capacity is used as the energy storage system capacity of the PV-SD-DC-S system.

[0034] The energy storage system capacity calculation method of the building integrated photovoltaics, energy storage, direct current and flexible alternating current (BIPV-ES-DC-FAC) system provided by the embodiments of the present invention can strictly calculate according to the calculation formula of the flexibility index in the "Evaluation Standard for Building Integrated Photovoltaics, Energy Storage, Direct Current and Flexible Alternating Current System" TCABEE 055-2023, ensuring that the calculated energy storage capacity meets the index requirements of the evaluation standard. Among them, the flexibility process in the standard is divided into single adjustment and continuous adjustment. Since the energy storage capacity required for single adjustment is much smaller than that for continuous adjustment, the embodiments of the present invention provide a calculation method for continuous adjustment. When the energy storage capacity meets the index requirements of continuous adjustment, it can also meet the energy storage capacity required for single adjustment. That is to say, the method provided by the embodiments of the present invention is a calculation method that can meet both the continuous adjustment and the energy storage capacity required for single adjustment, and this calculation method can ensure that the calculation result can meet the flexibility index requirements of the "Evaluation Standard for Building Integrated Photovoltaics, Energy Storage, Direct Current and Flexible Alternating Current System" TCABEE 055-2023 standard.

[0035] Further, the calculation method of the target power of the BIPV-ES-DC-FAC system in the embodiments of the present invention includes the following steps A1-A2.

[0036] Step A1: Simulate the 8760-hour energy consumption data of the BIPV-ES-DC-FAC system according to the building characteristics, and select the typical days in summer and winter as the basic data for flexibility calculation.

[0037] Among them, the selection of typical days should cover at least 95% of the whole year and can represent the typical working conditions of the building. For example, working days should be selected for office buildings. It should be noted that in the embodiments of the present invention, the determination of typical days is generally based on covering 95% of the working conditions of the building. If there are other specified selection criteria for typical days, other methods can also be used to determine typical days, and the present invention does not limit this.

[0038] Step A2: According to the "Guidelines for Monitoring the Effect of Demand Response and Evaluating Comprehensive Benefits" GB / T 32127-2015, select the simulation data of the previous 10 working days or the previous 4 non-working days before the typical day as the basis to calculate the basic load, and take the hourly average of the whole day as the target power for flexibility adjustment calculation.

[0039] Further, the flexible electrical load power P of the BIPV-ES-DC-FAC system at time t in the calculation formula of the target power of the above BIPV-ES-DC-FAC system t is calculated by the formula: P t =P l +P a +P s +P c +P o ; where P l , P a , P s , P c and P oThe simulated powers of the flexible electrical loads of the building lighting system, building air-conditioning system, building socket system, charging pile system, and other flexible electrical loads at time t, respectively.

[0040] Furthermore, the adjustable capacity ΔP of the flexible electrical load of the photovoltaic-storage-direct-current-flexible (PV-SD-F) system at time t in the calculation formula of the target power of the above PV-SD-F system t is calculated as: ΔP t = ΔP t,l + ΔP t,a + ΔP t,s + ΔP t,c + ΔP t,o where ΔP t,l , ΔP t,a , ΔP t,s , ΔP t,c , and ΔP t,o are the adjustable capacities of the flexible electrical loads of the building lighting system, building air-conditioning system, building socket system, charging pile system, and other flexible electrical loads at time t, respectively.

[0041] Furthermore, the calculation formula for the power of the energy storage system in each window period of the PV-SD-F system is: P t,e = P t * - (P t + ΔP t ); where P t,e is the simulated power of the energy storage system at time t, P t * is the target power of the PV-SD-F system, P t is the power of the flexible electrical load of the PV-SD-F system at time t, and ΔP t is the adjustable capacity of the flexible electrical load of the PV-SD-F system at time t.

[0042] By calculating the adjustable capacity ΔP t of the flexible electrical load of the PV-SD-F system at time t, the power P t of the flexible electrical load of the PV-SD-F system at time t, and the target power P t * of the PV-SD-F system through the above formulas, the simulated power P t,e of the energy storage system at time t can be calculated.

[0043] Furthermore, the calculation formula for the charging capacity required by the energy storage system is: Q 充 = ∫max{P t,e , 0}dt; the calculation formula for the discharging capacity required by the energy storage system is: Q 放 = ∫|min{P t,e , 0}|dt; where P t,e is the simulated power of the energy storage system at time t.

[0044] It can be understood that by integrating the power of the energy storage system, the capacity requirement of the energy storage system can be calculated. In the embodiment of the present invention, for the calculated charging capacity Q of the energy storage system 充 and the required discharge capacity Q of the energy storage system 放 , compare the numerical values of the two. Based on the calculation formula of the energy storage capacity: Q = max{Q 放 , Q 充}, determine the capacity of the energy storage system.

[0045] Optionally, the calculation of the base load provided in the embodiment of the present invention generally follows the calculation method in the "Guidelines for Monitoring the Effect of Demand Response and Evaluating Comprehensive Benefits" GB / T 32127-2015. However, different provinces and cities may give different calculation methods according to their own situations. Therefore, the local calculation method can also be used for calculation, and the embodiment of the present invention does not limit this.

[0046] The above text has described in detail the method for calculating the energy storage system capacity of the building integrated photovoltaics, energy storage, direct current, and flexible alternating current system provided in the embodiment of the present invention. This method can also be implemented by a corresponding device. The following describes in detail the device for calculating the energy storage system capacity of the building integrated photovoltaics, energy storage, direct current, and flexible alternating current system provided in the embodiment of the present invention.

[0047] Figure 2 shows a schematic structural diagram of a device for calculating the energy storage system capacity of a building integrated photovoltaics, energy storage, direct current, and flexible alternating current system provided in an embodiment of the present invention. As Figure 2 shown, the device for calculating the energy storage system capacity of the building integrated photovoltaics, energy storage, direct current, and flexible alternating current system includes a processor. The processor includes: a flexible load performance determination module 21, an adjustable capacity calculation module 22, an energy storage system power calculation module 23, and an energy storage system capacity calculation module 24.

[0048] The flexible load performance determination module 21 is used to determine the flexible load performance of the building integrated photovoltaics, energy storage, direct current, and flexible alternating current system according to the equipment operation requirements.

[0049] The adjustable capacity calculation module 22 is used to determine the system power and adjustable capacity of each window period of the building integrated photovoltaics, energy storage, direct current, and flexible alternating current system at least according to the flexible load performance, human comfort, and equipment usage habits.

[0050] The energy storage system power calculation module 23 is used to determine the power of each window period of the energy storage system of the building integrated photovoltaics, energy storage, direct current, and flexible alternating current system according to the difference between the sum of the system power and the adjustable capacity of each window period of the building integrated photovoltaics, energy storage, direct current, and flexible alternating current system and the target power.

[0051] The energy storage system capacity calculation module 24 is used to determine the charging capacity and discharging capacity required for the energy storage system by integrating the power of each window period of the energy storage system, and select the larger capacity value between the charging capacity and the discharging capacity as the energy storage system capacity.

[0052] Optionally, the calculation method of the target power includes: simulating the 8760-hour energy consumption data of the building integrated photovoltaics, energy storage, and direct current and flexible alternating current (PV-ESS-DC / AC) system 8760 according to the building characteristics, and selecting the typical days in summer and winter as the basic data for flexible calculation; according to the "Guidelines for Monitoring the Effect of Demand Response and Evaluating Comprehensive Benefits" GB / T 32127-2015, selecting the simulation data of the previous 10 working days or the previous 4 non-working days before the typical day as the basis to calculate the basic load, and taking the hourly average throughout the day as the target power for the flexible adjustment calculation.

[0053] Optionally, the flexible load performance of the PV-ESS-DC / AC system includes: flexible electrical load of the building lighting system, flexible electrical load of the building air conditioning system, flexible electrical load of the building socket system, flexible electrical load of the charging pile system, and other flexible electrical loads.

[0054] Optionally, the calculation formula for the flexible electrical load power of the PV-ESS-DC / AC system at time t is: P t = P l + P a + P s + P c + P o ; where P l , P a , P s , P c , and P o are the simulated powers of the flexible electrical load of the building lighting system, the flexible electrical load of the building air conditioning system, the flexible electrical load of the building socket system, the flexible electrical load of the charging pile system, and the other flexible electrical loads at time t, respectively.

[0055] Optionally, the calculation formula for the adjustable capacity of the flexible electrical load of the PV-ESS-DC / AC system at time t is: ΔP t = ΔP t,l + ΔP t,a + ΔP t,s + ΔP t,c + ΔP t,o ; where ΔP t,l , ΔP t,a , ΔP t,s , ΔP t,c , and ΔP t,o are the adjustable capacities of the flexible electrical load of the building lighting system, the flexible electrical load of the building air conditioning system, the flexible electrical load of the building socket system, the flexible electrical load of the charging pile system, and the other flexible electrical loads at time t, respectively.

[0056] Optionally, the calculation formula for the power of the energy storage system at each window period of the photovoltaic-storage-direct-current-soft system is: P t,e = P t * - (P t + ΔP t ); where P t,e is the simulated power of the energy storage system at time t, P t * is the target power of the photovoltaic-storage-direct-current-soft system, P t is the flexible electrical load power of the photovoltaic-storage-direct-current-soft system at time t, and ΔP t is the adjustable capacity of the flexible electrical load of the photovoltaic-storage-direct-current-soft system at time t.

[0057] Optionally, the calculation formula for the charging capacity required by the energy storage system is: Q 充 = ∫max{P t,e , 0}dt; the calculation formula for the discharging capacity required by the energy storage system is: Q 放 = ∫|min{P t,e , 0}|dt; where P t,e is the simulated power of the energy storage system at time t.

[0058] The device provided by the embodiments of the present invention can strictly calculate the energy storage capacity according to the calculation formula of the flexibility index in the "Evaluation Standard for Building Photovoltaic-Storage-Direct-Current-Soft System" TCABEE055-2023, ensuring that the calculated energy storage capacity meets the index requirements of the evaluation standard. Among them, the flexibility process in the standard is divided into single adjustment and continuous adjustment. Since the energy storage capacity required for single adjustment is much smaller than that for continuous adjustment, the embodiments of the present invention provide a calculation device for continuous adjustment. When the energy storage capacity meets the index requirements for continuous adjustment, it can also meet the energy storage capacity required for single adjustment. That is to say, the device provided by the embodiments of the present invention is a calculation device that can meet both the energy storage capacity required for continuous adjustment and single adjustment, and this calculation device can ensure that the calculation results can meet the flexibility index requirements of the "Evaluation Standard for Building Photovoltaic-Storage-Direct-Current-Soft System" TCABEE 055-2023 standard.

[0059] It should be noted that when the energy storage system capacity calculation device of the building photovoltaic-storage-direct-current-soft system provided in the above embodiments realizes the corresponding functions, only the above division of each functional module is used as an example. In actual applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the energy storage system capacity calculation device of the building photovoltaic-storage-direct-current-soft system provided in the above embodiments and the embodiments of the energy storage system capacity calculation method of the building photovoltaic-storage-direct-current-soft system belong to the same concept. The specific implementation process is detailed in the method embodiments and will not be repeated here.

[0060] According to one aspect of the present application, embodiments of the present invention further provide a computer program product, which includes a computer program containing program codes for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication part. When the computer program is executed by a processor, it executes the energy storage system capacity calculation method of the building optical storage DC flexible system provided by the embodiments of the present application.

[0061] In addition, embodiments of the present invention further provide an electronic device, including a bus, a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor. The transceiver, the memory, and the processor are respectively connected through the bus. When the computer program is executed by the processor, it implements each process of the energy storage system capacity calculation method embodiment of the above-mentioned building optical storage DC flexible system and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0062] Specifically, as shown in Figure 3 the electronic device includes a bus 1110, a processor 1120, a transceiver 1130, a bus interface 1140, a memory 1150, and a user interface 1160.

[0063] In embodiments of the present invention, the electronic device further includes: a computer program stored on the memory 1150 and executable on the processor 1120. When the computer program is executed by the processor 1120, it implements each process of the energy storage system capacity calculation method embodiment of the above-mentioned building optical storage DC flexible system.

[0064] The transceiver 1130 is used to receive and send data under the control of the processor 1120.

[0065] In embodiments of the present invention, the bus architecture (represented by the bus 1110), the bus 1110 may include any number of interconnected buses and bridges. The bus 1110 connects various circuits including one or more processors represented by the processor 1120 and the memory represented by the memory 1150 together.

[0066] Bus 1110 represents one or more of any of several types of bus structures, including a memory bus and a memory controller, a peripheral bus, an Accelerated Graphics Port (AGP), a processor, or a local bus using any of the various bus architectures. By way of example and not limitation, such architectures include: Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, Extended ISA (EISA) bus, Video Electronics Standards Association (VESA), Peripheral Component Interconnect (PCI) bus.

[0067] Processor 1120 can be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by the integrated logic circuit in the hardware of the processor or instructions in software form. The above processors include: general-purpose processors, central processing units (CPUs), network processors (NPs), digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), complex programmable logic devices (CPLDs), programmable logic arrays (PLAs), microcontroller units (MCUs), or other programmable logic devices, discrete gates, transistor logic devices, discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. For example, the processor can be a single-core processor or a multi-core processor, and the processor can be integrated on a single chip or located on multiple different chips.

[0068] The processor 1120 can be a microprocessor or any conventional processor. The method steps disclosed in connection with the embodiments of the present invention can be directly executed by a hardware decoding processor or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in a readable storage medium well-known in the art such as a Random Access Memory (RAM), a Flash Memory, a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), a register, etc. The readable storage medium is located in the memory, and the processor reads the information in the memory and combines its hardware to complete the steps of the above method.

[0069] The bus 1110 can also connect together various other circuits such as, for example, peripheral devices, voltage regulators, or power management circuits. The bus interface 1140 provides an interface between the bus 1110 and the transceiver 1130, which are all well-known in the art. Therefore, the embodiments of the present invention will not be further described herein.

[0070] The transceiver 1130 can be a single component or multiple components, such as multiple receivers and transmitters, providing a unit for communicating with various other devices over a transmission medium. For example: the transceiver 1130 receives external data from other devices, and the transceiver 1130 is used to send the data processed by the processor 1120 to other devices. Depending on the nature of the computer system, a user interface 1160 can also be provided, such as: a touch screen, a physical keyboard, a display, a mouse, a speaker, a microphone, a trackball, a joystick, a stylus.

[0071] It should be understood that in the embodiments of the present invention, the memory 1150 may further include a memory remotely disposed relative to the processor 1120, and these remotely disposed memories may be connected to the server through a network. One or more portions of the above network may be an ad hoc network, an intranet, an extranet, a virtual private network (VPN), a local area network (LAN), a wireless local area network (WLAN), a wide area network (WAN), a wireless wide area network (WWAN), a metropolitan area network (MAN), the Internet, a public switched telephone network (PSTN), a plain old telephone service network (POTS), a cellular telephone network, a wireless network, a wireless fidelity (Wi-Fi) network, and a combination of two or more of the above networks. For example, the cellular telephone network and the wireless network may be a Global System for Mobile Communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Worldwide Interoperability for Microwave Access (WiMAX) system, a General Packet Radio Service (GPRS) system, a Wideband Code Division Multiple Access (WCDMA) system, a Long Term Evolution (LTE) system, an LTE Frequency Division Duplexing (FDD) system, an LTE Time Division Duplexing (TDD) system, an Advanced Long Term Evolution (LTE-A) system, a Universal Mobile Telecommunications System (UMTS) system, an Enhance Mobile Broadband (eMBB) system, a massive Machine Type of Communication (mMTC) system, an UltraReliable Low Latency Communications (uRLLC) system, etc.

[0072] It should be understood that the memory 1150 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both a volatile memory and a non-volatile memory. Among them, the non-volatile memory includes: Read-Only Memory (ROM), Programmable ROM (PROM), Erasable PROM (EPROM), Electrically Erasable PROM (EEPROM), or Flash Memory.

[0073] The volatile memory includes: a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM). The memory 1150 of the electronic device described in the embodiments of the present invention includes but is not limited to the above and any other suitable types of memory.

[0074] In the embodiments of the present invention, the memory 1150 stores the following elements of the operating system 1151 and the application program 1152: executable modules, data structures, or subsets or extended sets thereof.

[0075] Specifically, the operating system 1151 includes various system programs, such as: framework layer, core library layer, driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 1152 includes various application programs, such as: media player, browser, for implementing various application services. The program for implementing the method of the embodiments of the present invention may be included in the application program 1152. The application program 1152 includes: applets, objects, components, logics, data structures, and other computer system executable instructions for performing specific tasks or implementing specific abstract data types.

[0076] In addition, the embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements each process of the energy storage system capacity calculation method embodiment of the above building optical storage direct current flexible system, and can achieve the same technical effect. To avoid repetition, it will not be described here again.

[0077] A computer-readable storage medium includes permanent and non-permanent, removable and non-removable media, which are tangible devices that can retain and store instructions for use by an instruction execution device. A computer-readable storage medium includes electronic storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, and any suitable combination of the foregoing. A computer-readable storage medium includes phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), non-volatile random access memory (NVRAM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tape storage, magnetic tape disk storage or other magnetic storage devices, memory sticks, mechanical encoding devices (such as punched cards or raised structures in grooves on which instructions are recorded), or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined in the embodiments of the present invention, a computer-readable storage medium does not include transient signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (such as light pulses passing through an optical fiber cable), or electrical signals transmitted through wires.

[0078] In several embodiments provided in the present application, it should be understood that the disclosed devices, electronic devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed couplings or direct couplings or communication connections to each other can be indirect couplings or communication connections through some interfaces, devices, or units, and can also be electrical, mechanical, or other forms of connection.

[0079] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units. They can be located in one position or distributed to multiple network units. Some or all of the units can be selected according to actual needs to solve the problems to be solved by the solution of the embodiments of the present invention.

[0080] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0081] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (including a personal computer, a server, a data center, or other network devices) to execute all or part of the steps of the methods described in the embodiments of the present invention. The above storage medium includes various media that can store program codes as listed above.

[0082] In the description of the embodiments of the present invention, those skilled in the art should know that the embodiments of the present invention can be implemented as a method, a device, an electronic device, and a computer-readable storage medium. Therefore, the embodiments of the present invention can be specifically implemented in the following forms: complete hardware, complete software (including firmware, resident software, microcode, etc.), and a combination of hardware and software. In addition, in some embodiments, the embodiments of the present invention can also be implemented in the form of a computer program product in one or more computer-readable storage media, and the computer-readable storage media contains computer program codes.

[0083] The above computer-readable storage media can adopt any combination of one or more computer-readable storage media. Computer-readable storage media include: electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or components, or any combination of the above. More specific examples of computer-readable storage media include: portable computer disks, hard disks, random access memories (RAMs), read-only memories (ROMs), erasable programmable read-only memories (EPROMs), flash memories, optical fibers, compact disc read-only memories (CD-ROMs), optical storage devices, magnetic storage devices, or any combination of the above. In the embodiments of the present invention, the computer-readable storage media can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, device, or component.

[0084] The computer program codes contained in the above computer-readable storage media can be transmitted by any suitable medium, including: wireless, wire, optical fiber, radio frequency (RF), or any suitable combination of the above.

[0085] The computer program code for performing the operations of the embodiments of the present invention can be written in assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, status setting data, integrated circuit configuration data, or in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as C language or similar programming languages. The computer program code can be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, and entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), and can also be connected to an external computer.

[0086] The methods, apparatuses, and electronic devices provided by the embodiments of the present invention are described by flowcharts and / or block diagrams.

[0087] It should be understood that each block of the flowchart and / or block diagram, and the combinations of blocks in the flowchart and / or block diagram, can be implemented by computer-readable program instructions. These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine. These computer-readable program instructions, when executed by a computer or other programmable data processing device, produce an apparatus that implements the functions / operations specified in the blocks of the flowchart and / or block diagram.

[0088] These computer-readable program instructions can also be stored in a computer-readable storage medium that can cause a computer or other programmable data processing device to work in a specific manner. In this way, the instructions stored in the computer-readable storage medium produce an instruction device product that includes the instructions for implementing the functions / operations specified in the blocks of the flowchart and / or block diagram.

[0089] The computer-readable program instructions can also be loaded onto a computer, other programmable data processing device, or other device, so that a series of operation steps are executed on the computer, other programmable data processing device, or other device, to produce a computer-implemented process. Thus, the instructions executed on the computer or other programmable data processing device can provide a process for implementing the functions / operations specified in the blocks of the flowchart and / or block diagram.

[0090] As described above, it is only the specific implementation manner of the embodiments of the present invention. However, the protection scope of the embodiments of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the embodiments of the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the embodiments of the present invention. Therefore, the protection scope of the embodiments of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for calculating the capacity of an energy storage system of a building photovoltaic storage direct-flexible system, characterized in that: include: Determine the flexible load performance of the PV-storage direct-flexible system according to the equipment operation requirements; Determine the system power and adjustable capacity of the solar-storage direct-flexible system in each window period based at least on the flexible load performance, human comfort and equipment usage habits; Determine the power of the energy storage system of the solar-storage-direct-flexible system in each window period according to the difference between the sum of the system power and the adjustable capacity in each window period of the solar-storage-direct-flexible system and the target power; The required charging capacity and discharging capacity of the energy storage system are determined by integrating the power of each window period of the energy storage system, and the larger capacity value of the charging capacity and the discharging capacity is selected as the capacity of the energy storage system.

2. The method according to claim 1, characterized in that The target power calculation method includes: According to the building characteristics, the 8760-hour energy consumption data of the building's solar-storage direct-flexible system was simulated, and typical summer and winter days were selected as the basic data for flexible calculation; According to the Guidelines for Demand Response Effect Monitoring and Comprehensive Benefit Evaluation GB / T 32127-2015, the simulation data of the first 10 working days or the first 4 non-working days before a typical day are selected as the basis for calculating the basic load, and the hourly average throughout the day is used as the target power for the flexible adjustment calculation.

3. The method according to claim 1, characterized in that The flexible load performance of the photovoltaic storage direct-flexible system includes: flexible electric load of the building lighting system, flexible electric load of the building air-conditioning system, flexible electric load of the building socket system, flexible electric load of the charging pile system and other flexible electric loads.

4. The method according to claim 3, characterized in that The calculation formula of the flexible electric load power of the solar-storage direct-flexible system at time t is: P t =P l +P a +P s +P c +P o ; Among them, P l , P a , P s , P c and P o They are the simulated powers of the flexible electric load of the building lighting system, the flexible electric load of the building air-conditioning system, the flexible electric load of the building socket system, the flexible electric load of the charging pile system and the other flexible electric loads at time t respectively.

5. The method according to claim 3, characterized in that: The calculation formula of the adjustable capacity of the flexible electric load of the solar-storage direct-flexible system at time t is: ΔP t =ΔP t,l +ΔP t,a +ΔP t,s +ΔP t,c +ΔP t,o ; Among them, ΔP t,l , ΔP t,a , ΔP t,s , ΔP t,c and ΔP t,o They are the adjustable capacities of the flexible electric load of the building lighting system, the flexible electric load of the building air-conditioning system, the flexible electric load of the building socket system, the flexible electric load of the charging pile system and the other flexible electric loads at time t respectively.

6. The method according to claim 1, characterized in that The calculation formula of the energy storage system power in each window period of the photovoltaic storage direct-flexible system is: t,e =P t *-(P t +ΔP t ); Among them, P t,e is the simulated power of the energy storage system at time t, P t * is the target power of the solar-storage direct-flexible system, P t is the flexible electric load power of the PV-storage direct-flexible system at time t, ΔP t It is the adjustable capacity of the flexible electric load of the solar-storage direct-flexible system at time t.

7. The method according to claim 1, characterized in that The calculation formula for the charging capacity required by the energy storage system is: Q 充 =∫max{P t,e ,0}dt; The calculation formula for the discharge capacity required by the energy storage system is: Q 放 =∫|min{P t,e ,0}|dt; where P t,e is the simulated power of the energy storage system at time t.

8. A device for calculating the capacity of an energy storage system of a building photovoltaic storage direct and flexible system, characterized in that: include: Flexible load performance determination module, adjustable capacity calculation module, energy storage system power calculation module and energy storage system capacity calculation module; The flexible load performance determination module is used to determine the flexible load performance of the solar-storage direct-flexible system according to the equipment operation requirements; The adjustable capacity calculation module is used to determine the system power and adjustable capacity of the solar-storage direct-flexible system in each window period according to at least the flexible load performance, human comfort and equipment usage habits; The energy storage system power calculation module is used to determine the power of the energy storage system of the solar-storage-direct-flexible system in each window period according to the difference between the sum of the system power and the adjustable capacity in each window period of the solar-storage-direct-flexible system and the target power; The energy storage system capacity calculation module is used to determine the charging capacity and discharging capacity required by the energy storage system by integrating the power of each window period of the energy storage system, and select the larger capacity value of the charging capacity and the discharging capacity as the capacity of the energy storage system.

9. An electronic device comprising a processor and a memory, wherein the memory stores a computer program, characterized in that: The processor executes the computer program stored in the memory to implement the steps in the method for calculating the energy storage system capacity of the building photovoltaic storage direct-flexible system according to any one of claims 1 to 7.

10. A computer program product, characterized in that It includes a computer program, which, when executed, implements the steps in the method for calculating the energy storage system capacity of a building photovoltaic storage direct-flexible system as described in any one of claims 1 to 7.

Images