Micro-grid energy gateway aggregation and decomposition method, device and equipment supporting distribution and micro-grid cooperation, and medium

Abstract

The invention relates to the technical field of electric power system operation control, in particular to a micro-grid energy gateway aggregation and decomposition method, device, equipment and medium supporting distribution and micro-grid coordination, which designs an overall framework in which an energy gateway participates in distribution and micro-grid coordination and establishes a three-layer communication link of a distribution automation master station, the energy gateway and adjustable resources. Two core functions of north-south bidirectional information flow and support north aggregation and south decomposition are realized, an energy gateway proposes a real-time adjustment capability evaluation and aggregation method by calculating up-regulation and down-regulation power margins of multiple types of adjustable resources such as photovoltaic resources, energy storage resources, charging piles and building air conditioners in a micro-grid, receives an adjustment instruction issued by a master station, and performs real-time adjustment on the micro-grid. The energy gateway synthesizes the adjustment margins and characteristics of various resources, decomposes instructions step by step according to priorities, optimizes and distributes the instructions to specific equipment and issues and executes the instructions, the energy gateway serves as a medium, a cooperative channel between the adjustable resources of the power distribution network and the micro-grid is opened, efficient interaction is achieved, and the resource adjustment capacity and the operation efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the field of power system operation control technology, and in particular to a method, device, equipment and medium for aggregating and decomposing microgrid energy gateways supporting distribution and micro-cooperation. Background Art

[0002] With the large-scale development of user-side microgrids, a large number of distributed photovoltaic, energy storage, electric vehicles (charging piles), building air conditioners and other types of adjustable resource equipment are widely connected to the distribution network in the form of microgrids. However, distributed photovoltaic, energy storage, electric vehicles and other adjustable resource equipment have the characteristics of many points and wide areas, small single capacity, and large differences in adjustment characteristics. The existing centralized control system is difficult to adapt to the characteristics of massive heterogeneous and time-varying adjustment resources, and the difficulty of real-time control has increased significantly. The microgrid energy gateway is the adjustable capacity agent of the microgrid. It aggregates the light, storage, charging, and use equipment in the microgrid into standardized adjustable resource equipment, and uniformly connects to the real-time control system of the distribution network master station to form an important control resource of the distribution network. Through the orderly control of the microgrid energy gateway, the distribution network can improve the distribution network's absorption capacity and utilization efficiency of distributed renewable energy, and help deal with the safety and stability problems brought to the distribution network after the access of a large number of distributed resources.

[0003] Currently, distributed photovoltaic, energy storage, electric vehicles (charging piles), building air conditioners and other adjustable resource equipment have the characteristics of small single capacity, large differences in adjustment characteristics, wide location distribution, and a sharp increase in number. The existing centralized control system is difficult to adapt to the characteristics of massive heterogeneous and time-varying adjustment resources, and the difficulty of real-time control has increased significantly.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] The present invention provides a method, device, equipment and medium for aggregating and decomposing a microgrid energy gateway supporting distribution and micro-cooperation, thereby effectively solving the problems in the background technology.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: a method for aggregating and decomposing microgrid energy gateways supporting distribution-micro collaboration, comprising the following steps:

[0007] S10: Establish an overall framework for the microgrid to participate in the distribution and micro-cooperation through the energy gateway. The energy gateway serves as a medium for the adjustable resource equipment in the microgrid. The adjustable resource equipment in the microgrid and the distribution automation master station establish a north-south communication channel through the energy gateway to complete two-way information interaction.

[0008] S20: monitoring the operating status information of various adjustable resource devices in the microgrid in real time through the energy gateway, wherein the adjustable resource devices include at least photovoltaic, energy storage, charging piles and building air conditioners, and calculating the upward adjustment margin and downward adjustment power margin of various resource devices based on the operating status information;

[0009] S30: Based on the upward power margin and downward power margin of the various adjustable resource devices, the total upward power margin and the total downward power margin of the microgrid are aggregated and calculated through the energy gateway to form a real-time regulation capability evaluation value of the microgrid;

[0010] S40: uploading the real-time regulation capability evaluation value of the microgrid, including the total upward power limit and the total downward power limit, to the distribution automation master station through the energy gateway for distribution network regulation demand analysis and decision-making;

[0011] S50: The energy gateway receives the adjustment instruction issued by the distribution automation master station, and according to the adjustment instruction, combined with the real-time adjustment margin and adjustment characteristics of various adjustable resource devices in the microgrid, decomposes the adjustment instruction step by step according to the set priority order, generates the control instruction of each adjustable resource device in the microgrid, and sends the control instruction to each adjustable resource device;

[0012] S60: dynamically updating the decomposition result of the adjustment instruction according to the real-time feedback information and execution status of the adjustable resource device until all decomposed tasks corresponding to the adjustment instruction are completed, thereby ensuring the optimal execution effect of the adjustment instruction.

[0013] Furthermore, in step S20, the calculation model of the total photovoltaic upward adjustment margin and downward adjustment margin includes:

[0014] ;

[0015] ;

[0016] In the formula, and They represent the total upward power margin and total downward power margin of all photovoltaics in the microgrid at time t, respectively. The subscript p represents the photovoltaic index. The set represents the remotely adjustable photovoltaic collection in the microgrid, and They respectively represent the theoretical maximum output and controlled output of photovoltaic p at time t, where the theoretical maximum output value of photovoltaic is determined according to the real-time meteorological monitoring value and the control mode of the inverter.

[0017] Furthermore, in step S20, the calculation model of the total upward adjustment margin and downward adjustment margin of energy storage includes:

[0018] ;

[0019] ;

[0020] In the formula, and They represent the total upward power margin and total downward power margin of all energy storage systems in the microgrid at time t, respectively. The subscript e represents the energy storage system index. Represents the set of remotely adjustable energy storage systems in the microgrid, and They represent the maximum power and minimum power of the energy storage system e, Represents the real-time control power of the energy storage system e at time t.

[0021] Furthermore, in step S20, the calculation model of the total upward adjustment margin and downward adjustment margin of the charging pile includes:

[0022] ;

[0023] ;

[0024] In the formula, and They represent the total upward power margin and total downward power margin of all charging piles in the microgrid at time t, respectively. The subscript c represents the charging pile index. Represents the collection of charging piles that can be remotely adjusted in the microgrid, and They respectively represent the maximum charging power and the controlled charging power of the charging pile c at time t, where the maximum charging power is equal to the minimum value of the rated charging power of the charging pile c and the rated charging power of the electric vehicle connected to the charging pile c at time t.

[0025] Furthermore, in step S20, the calculation model of the total upward adjustment margin and downward adjustment margin of the building air conditioner includes:

[0026] ;

[0027] ;

[0028] ;

[0029] ;

[0030] In the formula, and They represent the total upward and downward active power margins of all air conditioners in the microgrid at time t, respectively. The subscript a represents the air conditioner index. represents the set of remotely adjustable air conditioners in the microgrid, represents the power consumption of air conditioner a at time t, and They represent the maximum power consumption and minimum power consumption allowed by air conditioner a at time t, It indicates the minimum to maximum temperature range that meets the human comfort requirements in the building where the air conditioner a is located. represents the indoor temperature of the building where air conditioner a is located at time t-1, It represents the ambient temperature outside the building where air conditioner a is located at time t. represents the heat transfer coefficient of the building where the air conditioner a is located, and They represent the cooling and heating coefficients of air conditioner a respectively.

[0031] Furthermore, in step S30, the calculation model of the total upward power margin and the total downward power margin of all adjustable resource devices in the microgrid includes:

[0032] ;

[0033] ;

[0034] In the formula, and represents the total upward and downward active power margin of the microgrid at time t, and They represent the total upward power margin and total downward power margin of all photovoltaics in the microgrid at time t, and They represent the total upward power margin and total downward power margin of all energy storage systems in the microgrid at time t, and They represent the total upward power margin and total downward power margin of all charging piles in the microgrid at time t, and They represent the total upward and downward active power margins of all air conditioners in the microgrid at time t respectively.

[0035] Furthermore, in step S40, the calculation model of the total upward power limit and the total downward power limit includes:

[0036] ;

[0037] ;

[0038] Where: and They represent the active power limits that can be adjusted up and down by the microgrid at time t, represents the power exchanged by the microgrid at the grid connection point at time t, and It represents the total upward and downward active power margin of the microgrid at time t.

[0039] Further, in step S50, the energy gateway receives the adjustment instruction issued by the distribution automation master station, and according to the adjustment instruction, combined with the real-time adjustment margin and adjustment characteristics of various adjustable resource devices in the microgrid, decomposes the adjustment instruction step by step according to the set priority order, generates the control instruction of each adjustable resource device in the microgrid, and sends the control instruction to each adjustable resource device, and the steps include:

[0040] S51: The energy gateway receives a target power adjustment instruction issued by the distribution automation master station ;

[0041] S52: Determine the target power adjustment instruction Whether it is within the total upward power limit of the microgrid and the total down-regulated power limit If yes, then continue to execute step S53, if no, then generate feedback information that the microgrid cannot respond and upload it to the distribution automation master station;

[0042] S53: Adjust the instruction based on the target power Real-time grid-connected power of microgrid Difference, calculate the corresponding increase in power regulation demand Or downgrade , and initialize the decomposition residual or ;

[0043] S54: According to the priority order of each type of adjustable resource equipment in the microgrid, determine whether the decomposition of the remaining amount can be completed from high to low. or :

[0044] If the total adjustment margin of the current type of adjustable resource equipment can be completely decomposed, it is allocated according to the maximum adjustment capacity, and the decomposed remainder is set to zero;

[0045] If it cannot be completely decomposed, the current category resources are adjusted to the maximum capacity first, and the decomposition remaining amount is updated, and the next priority resource is transferred;

[0046] S55: Generate control instructions for each adjustable resource device according to the decomposition result, and send the control instructions to the adjustable resource devices one by one for execution.

[0047] Further, in step S60, according to the real-time feedback information and execution status of the adjustable resource device, the adjustment instruction decomposition result is dynamically updated until all the decomposed tasks corresponding to the adjustment instruction are completed to ensure the optimal execution effect of the adjustment instruction, the steps include:

[0048] S61: real-time collection of operating status information of each adjustable resource device in the microgrid during the execution of control instructions, including actual power adjustment status and device feedback information;

[0049] S62: judging whether each adjustable resource device has completed the assigned adjustment task according to the operation status information:

[0050] If the adjustable resource device fails to completely perform the assigned adjustment task, the unfinished adjustment amount is recorded, and the unfinished adjustment amount is updated to the decomposed remaining amount;

[0051] S63: Based on the updated decomposed remaining amount, re-execute the adjustment instruction decomposition according to the priority order of the remaining adjustable resources to generate a supplementary control instruction;

[0052] S64: Send the supplementary control instruction to the relevant adjustable resource device, monitor the execution result in real time, and repeat steps S61 to S63 until the decomposition remainder is zero, that is, all decomposition tasks are completed.

[0053] The present invention also includes a microgrid energy gateway aggregation and decomposition device supporting distribution and micro-cooperation, using the above method, including:

[0054] A communication unit is used to establish an overall framework for the microgrid to participate in the distribution and micro-cooperation through the energy gateway. The energy gateway serves as a medium for the adjustable resource equipment in the microgrid. The adjustable resource equipment in the microgrid and the distribution automation master station establish a north-south communication channel through the energy gateway to complete two-way information interaction;

[0055] A monitoring unit, configured to monitor in real time the operating status information of various adjustable resource devices in the microgrid through the energy gateway, wherein the adjustable resource devices include at least photovoltaic, energy storage, charging piles and building air conditioners, and calculate the upward adjustment margin and downward adjustment power margin of various resource devices based on the operating status information;

[0056] A calculation unit, configured to calculate the total upward power margin and the total downward power margin of the microgrid through the energy gateway based on the upward power margin and the downward power margin of the various adjustable resource devices, so as to form a real-time regulation capability evaluation value of the microgrid;

[0057] An uploading unit, used for uploading the real-time regulation capability evaluation value of the microgrid, including the total upward power limit and the total downward power limit, to the distribution automation master station through the energy gateway for distribution network regulation demand analysis and decision-making;

[0058] A decomposition unit, configured for the energy gateway to receive the regulation instruction issued by the distribution automation master station, and according to the regulation instruction, combined with the real-time regulation margin and regulation characteristics of various adjustable resource devices in the microgrid, decompose the regulation instruction step by step according to the set priority order, generate the control instruction of each adjustable resource device in the microgrid, and issue the control instruction to each adjustable resource device;

[0059] The execution unit is used to dynamically update the decomposition result of the adjustment instruction according to the real-time feedback information and execution status of the adjustable resource equipment until all the decomposed tasks corresponding to the adjustment instruction are completed, thereby ensuring the optimal execution effect of the adjustment instruction.

[0060] The present invention also includes a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method described above is implemented.

[0061] The present invention also includes a storage medium on which a computer program is stored. When the computer program is executed by a processor, the method described above is implemented.

[0062] The beneficial effects of the present invention are:

[0063] By designing the overall framework of energy gateway participating in the coordination between distribution and microgrid, the north-south information transmission process between the distribution automation master station, microgrid energy gateway and adjustable resources is proposed, and the communication link between the distribution automation master station, microgrid energy gateway and adjustable resources is opened up, providing a two-way information flow channel for realizing the two core functions of northward "aggregation" and southward "decomposition" of the coordinated interaction between distribution and microgrid; the microgrid energy gateway calculates the upward and downward power margins of multiple types of adjustable resources such as distributed photovoltaic, energy storage, charging piles, and building air conditioners in the microgrid, and proposes a real-time adjustment capability evaluation and aggregation method for multiple types of adjustable resources in the microgrid; the microgrid energy gateway receives the adjustment instructions issued by the distribution automation master station, comprehensively considers the real-time adjustment margins and adjustment characteristics of various types of adjustable resources in the microgrid, and decomposes the master station adjustment instructions level by level and device by device according to the custom priority order, optimizes the allocation to adjustable resources and devices, and issues them for execution. Through the above method, the microgrid uses the energy gateway as a medium to realize the efficient coordinated interaction between the distribution network and the adjustable resources in the microgrid. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0065] Figure 1 A flow chart of the microgrid energy gateway aggregation and decomposition method to support the coordination of distribution and microgrid;

[0066] Figure 2 The overall framework diagram for microgrids to participate in the coordination of distribution and microgrids through energy gateways;

[0067] Figure 3 Flow chart corresponding to steps A1 to A3 in the embodiment;

[0068] FIG4( a ) is a flowchart corresponding to steps A4.1→A5.1→A6.1 in the embodiment;

[0069] FIG4( b ) is a flowchart corresponding to steps A4.2→A5.2→A6.2 in the embodiment;

[0070] FIG5( a ) is a flowchart corresponding to steps A7.1→A8.1→A9.1 in the embodiment;

[0071] FIG5( b ) is a flowchart corresponding to steps A7.2→A8.2→A9.2 in the embodiment;

[0072] FIG6( a ) is a flowchart corresponding to steps A10.1→A11.1→A12.1 in the embodiment;

[0073] FIG6( b ) is a flowchart corresponding to steps A10.2→A11.2→A12.2 in the embodiment;

[0074] FIG. 7( a ) is a flowchart corresponding to steps A14.1→A15.1→A16.1 in the embodiment;

[0075] FIG. 7( b ) is a flowchart corresponding to steps A14.2→A15.2→A16.2 in the embodiment;

[0076] Figure 8 Execute the master station regulation command graph decomposed by the energy gateway for the adjustable resources in the microgrid;

[0077] Fig. 9 A schematic diagram of the structure of the aggregation and decomposition device of the microgrid energy gateway to support the coordination of distribution and microgrid;

[0078] Fig.10 A schematic diagram of the structure of a computer device. DETAILED DESCRIPTION

[0079] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0080] like Figure 1 As shown: A method for aggregating and decomposing microgrid energy gateways supporting micro-distribution collaboration includes the following steps:

[0081] S10: Establish an overall framework for microgrids to participate in distribution and micro-cooperation through energy gateways. The energy gateway serves as a medium for adjustable resource devices in the microgrid. The adjustable resource devices in the microgrid and the distribution automation master station establish a north-south communication channel through the energy gateway to complete two-way information interaction.

[0082] S20: Monitor the operating status information of various adjustable resource devices in the microgrid in real time through the energy gateway. The adjustable resource devices include at least photovoltaic, energy storage, charging piles and building air conditioners. Calculate the upward adjustment margin and downward adjustment power margin of various resource devices based on the operating status information;

[0083] S30: Based on the upward power margin and downward power margin of various adjustable resource devices, the total upward power margin and total downward power margin of the microgrid are aggregated and calculated through the energy gateway to form a real-time regulation capability evaluation value of the microgrid;

[0084] S40: The real-time regulation capability evaluation value of the microgrid, including the total upward power limit and the total downward power limit, is uploaded to the distribution automation master station through the energy gateway for distribution network regulation demand analysis and decision-making;

[0085] S50: The energy gateway receives the regulation instruction issued by the distribution automation master station, and decomposes the regulation instruction step by step according to the set priority order based on the regulation instruction and the real-time regulation margin and regulation characteristics of various adjustable resource devices in the microgrid, generates the control instruction of each adjustable resource device in the microgrid, and sends the control instruction to each adjustable resource device;

[0086] S60: Dynamically update the adjustment instruction decomposition result according to the real-time feedback information and execution status of the adjustable resource equipment until all the decomposed tasks corresponding to the adjustment instruction are completed, so as to ensure the optimal execution effect of the adjustment instruction.

[0087] The present invention proposes a microgrid energy gateway aggregation and decomposition method that supports distribution-micro collaboration. Through the aggregation and decomposition functions of the microgrid energy gateway, efficient collaborative interaction between the distribution network and the microgrid is achieved: first, an overall framework for the microgrid to participate in the distribution-micro collaboration through the energy gateway is established, and a communication channel between the three layers of the distribution automation master station, the microgrid energy gateway, and the adjustable resources, as well as the north-south information transmission process are proposed; secondly, the energy gateway is used to calculate the upward and downward power margins of multiple types of adjustable resources such as distributed photovoltaics, energy storage, charging piles, and building air conditioners in the microgrid, and then a real-time adjustment capability evaluation and aggregation method for multiple types of adjustable resources in the microgrid is proposed. , the energy gateway sends the real-time regulation margin and regulation limit of the aggregated microgrid to the distribution automation master system and displays them; finally, the distribution automation master system sends the power regulation instructions of the microgrid to the energy gateway according to the regulation requirements such as peak regulation and voltage regulation of the distribution network and the regulation margin of the microgrid. The energy gateway receives the regulation instructions issued by the distribution automation master station, comprehensively considers the real-time regulation margin and regulation characteristics of various adjustable resources in the microgrid, decomposes the regulation instructions level by level and device by device in order of priority, obtains the control instructions of the adjustable resources and equipment in the microgrid and sends them for execution, so as to optimize the allocation of the regulation instructions issued by the distribution automation master system.

[0088] By designing the overall framework of energy gateway participating in the coordination between distribution and microgrid, the north-south information transmission process between the distribution automation master station, microgrid energy gateway and adjustable resources is proposed, and the communication link between the distribution automation master station, microgrid energy gateway and adjustable resources is opened up, providing a two-way information flow channel for realizing the two core functions of northward "aggregation" and southward "decomposition" of the coordinated interaction between distribution and microgrid; the microgrid energy gateway calculates the upward and downward power margins of multiple types of adjustable resources such as distributed photovoltaic, energy storage, charging piles, and building air conditioners in the microgrid, and proposes a real-time adjustment capability evaluation and aggregation method for multiple types of adjustable resources in the microgrid; the microgrid energy gateway receives the adjustment instructions issued by the distribution automation master station, comprehensively considers the real-time adjustment margins and adjustment characteristics of various types of adjustable resources in the microgrid, and decomposes the master station adjustment instructions level by level and device by device according to the custom priority order, optimizes the allocation to adjustable resources and devices, and issues them for execution. Through the above method, the microgrid uses the energy gateway as a medium to realize the efficient coordinated interaction between the distribution network and the adjustable resources in the microgrid.

[0089] The overall framework of microgrid participation in the coordinated interaction between distribution and microgrid, such as Figure 2As shown in the figure, the energy gateway is the agent of the adjustable capacity of the microgrid and the medium for the microgrid to participate in the distribution-micro collaboration. The energy gateway establishes a communication channel between the adjustable resources in the microgrid and the distribution automation master station, and realizes the two-way flow of northbound and southbound data. The edge layer adjustable resources such as photovoltaics, energy storage, charging piles, and building air conditioners in the microgrid are connected to the microgrid energy gateway through communication protocols such as IEC104, modbus, and mqtt; the microgrid energy gateway is connected to the distribution automation master station through a 4G / 5G wireless private network or optical fiber through a secure access area. In terms of northbound information transmission, the energy gateway sends the operating information of the edge layer adjustable equipment and the aggregated and evaluated microgrid regulation capacity to the distribution automation master station for call analysis by the distribution-micro collaboration function module; in terms of southbound information transmission, the energy gateway receives the regulation control instructions issued by the distribution automation master station distribution-micro collaboration module, decomposes the regulation control instructions level by level and device by device according to the priority order, obtains the regulation control instructions of the adjustable equipment, and distributes them to the adjustable equipment that needs to be adjusted. It can be seen that in the process of coordinated interaction between distribution networks and microgrids and north-south information transmission, aggregation and decomposition are the core algorithm functions of energy gateways participating in distribution-microgrid collaboration.

[0090] The energy gateway calculates the up and down power margins of various adjustable resources based on the real-time monitoring values ​​of the operating status and power of distributed photovoltaic, energy storage, charging piles, building air conditioners, etc. in the microgrid, and then aggregates the up and down power margins of all adjustable resources to obtain the total up and down power margins of the microgrid, and superimposes the real-time exchange power of the microgrid to obtain the real-time up and down power limits of the microgrid. The specific calculation method is described as follows.

[0091] In this embodiment, in step S20, the calculation model of the total photovoltaic upward adjustment margin and downward adjustment margin includes:

[0092] ;

[0093] ;

[0094] In the formula, and They represent the total upward power margin and total downward power margin of all photovoltaics in the microgrid at time t, respectively. The subscript p represents the photovoltaic index. The set represents the remotely adjustable photovoltaic collection in the microgrid, and They respectively represent the theoretical maximum output and controlled output of photovoltaic p at time t, where the theoretical maximum output value of photovoltaic is determined according to the real-time meteorological monitoring value and the control mode of the inverter.

[0095] The calculation model for the upward adjustment margin fully considers the difference between the theoretical maximum output and the actual control output of photovoltaics, and can reasonably evaluate the power range that can be increased by photovoltaic equipment to avoid waste of resources; the calculation model for the downward adjustment margin is based on the current actual control output of photovoltaics, clarifies the power range that can be reduced by photovoltaic equipment, and optimizes the flexibility of resource use.

[0096] As a preferred embodiment of the above, in step S20, the calculation model of the total upward adjustment margin and downward adjustment margin of energy storage includes:

[0097] ;

[0098] ;

[0099] In the formula, and They represent the total upward power margin and total downward power margin of all energy storage systems in the microgrid at time t, respectively. The subscript e represents the energy storage system index. Represents the set of remotely adjustable energy storage systems in the microgrid, and They represent the maximum power (+ rated power) and minimum power (- rated power) of the energy storage system e, Represents the real-time control power of the energy storage system e at time t (charging is +, discharging is -).

[0100] The separate calculation of upward and downward power margins enables the energy storage system to quickly respond to power regulation needs in different directions according to actual needs; accurate margin calculation ensures the flexibility of the microgrid regulation strategy. Whether it is peak shaving or frequency and voltage regulation, the energy storage system can provide precise support.

[0101] Among them, in step S20, the calculation model of the total upward adjustment margin and downward adjustment margin of the charging pile includes:

[0102] ;

[0103] ;

[0104] In the formula, and They represent the total upward power margin and total downward power margin of all charging piles in the microgrid at time t, respectively. The subscript c represents the charging pile index. Represents the collection of charging piles that can be remotely adjusted in the microgrid, and They respectively represent the maximum charging power and the controlled charging power of the charging pile c at time t, where the maximum charging power is equal to the minimum value of the rated charging power of the charging pile c and the rated charging power of the electric vehicle connected to the charging pile c at time t.

[0105] By rationally utilizing the upward and downward power margins of charging piles, the grid's adaptability to fluctuations in renewable energy can be improved, the flexibility of charging piles as controllable loads can be enhanced, and the efficient consumption of renewable energy can be facilitated.

[0106] As a preferred embodiment of the above, in step S20, the calculation model of the total upward adjustment margin and downward adjustment margin of the building air conditioner includes:

[0107] ;

[0108] ;

[0109] ;

[0110] ;

[0111] In the formula, and They represent the total upward and downward active power margins of all air conditioners in the microgrid at time t, respectively. The subscript a represents the air conditioner index. represents the set of remotely adjustable air conditioners in the microgrid, represents the power consumption of air conditioner a at time t, and They represent the maximum power consumption and minimum power consumption allowed by air conditioner a at time t, It indicates the minimum to maximum temperature range that meets the human comfort requirements in the building where the air conditioner a is located. represents the indoor temperature of the building where air conditioner a is located at time t-1, It represents the ambient temperature outside the building where air conditioner a is located at time t. represents the heat transfer coefficient of the building where the air conditioner a is located, and They represent the cooling and heating coefficients of air conditioner a respectively.

[0112] The regulation capacity of the air conditioner is dynamically calculated by combining parameters such as indoor and outdoor temperature and the building's heat transfer coefficient, so that the regulation task can be quickly adjusted according to the actual load demand, improving the flexibility and execution efficiency of the microgrid regulation task; accurately assessing the regulation capacity of each air conditioner, optimizing the decomposition of regulation instructions, and avoiding excessive or insufficient regulation.

[0113] In step S30, the calculation model of the total upward power margin and the total downward power margin of all adjustable resource devices in the microgrid includes:

[0114] ;

[0115] ;

[0116] In the formula, and represents the total upward and downward active power margin of the microgrid at time t, and They represent the total upward power margin and total downward power margin of all photovoltaics in the microgrid at time t, and They represent the total upward power margin and total downward power margin of all energy storage systems in the microgrid at time t, and They represent the total upward power margin and total downward power margin of all charging piles in the microgrid at time t, and They represent the total upward and downward active power margins of all air conditioners in the microgrid at time t respectively.

[0117] The formula indicates that the regulation margin of the microgrid is obtained by superimposing the regulation margins of all adjustable photovoltaics, energy storage, charging piles, and air conditioners in the microgrid.

[0118] By integrating the regulation margins of photovoltaics, energy storage, charging piles and building air conditioners into the total upward power margin and the total downward power margin, the overall regulation capability of the microgrid at time t is fully reflected; the modeled quantification method avoids the complexity of single device calculation and provides reliable data support for the overall regulation of the microgrid.

[0119] As a preference for the above embodiment, in step S40, the calculation model of the total upward power limit and the total downward power limit includes:

[0120] ;

[0121] ;

[0122] Where: and They represent the active power limits that can be adjusted up and down by the microgrid at time t, represents the power exchanged at the grid connection point of the microgrid at time t (off-grid is +, on-grid is -), and It represents the total upward and downward active power margin of the microgrid at time t.

[0123] Through the calculation model of the total upward power limit and the total downward power limit, the adjustable range of the microgrid at time t can be accurately characterized, providing clear boundary conditions for the actual regulation task. The upper and lower bounds of the active power limit provide core parameters for the regulation decision of the microgrid, avoiding the regulation task exceeding the system capacity.

[0124] The microgrid regulation instruction decomposition function of the energy gateway aims to respond to the regulation needs (peak regulation, frequency regulation, voltage regulation, etc.) of the distribution automation master station, comprehensively consider the real-time regulation margin and regulation characteristics of various adjustable resources in the microgrid, and decompose the regulation instructions issued by the distribution automation master station step by step and device by device in order of priority, so as to obtain the control plan of the adjustable resources and equipment in the microgrid and issue it for execution, so as to achieve the optimal allocation of regulation instructions.

[0125] In this embodiment, in step S50, the energy gateway receives the adjustment instruction issued by the distribution automation master station, and according to the adjustment instruction, combined with the real-time adjustment margin and adjustment characteristics of various adjustable resource devices in the microgrid, decomposes the adjustment instruction step by step according to the set priority order, generates the control instruction of each adjustable resource device in the microgrid, and sends the control instruction to each adjustable resource device, and the steps include:

[0126] S51: The energy gateway receives the target power adjustment instruction issued by the distribution automation master station ;

[0127] S52: Determine the target power adjustment instruction Whether it is within the total upward power limit of the microgrid and the total down-regulated power limit ,Right now , if yes, then continue to execute step S53, if no, then generate feedback information that the microgrid cannot respond and upload it to the distribution automation master station;

[0128] S53: Adjustment instruction based on target power Real-time grid-connected power of microgrid Difference, calculate the corresponding increase in power regulation demand Or downgrade , and initialize the decomposition residual or ;

[0129] S54: According to the priority order of various adjustable resource devices in the microgrid, determine whether the decomposition of the remaining amount can be completed from high to low. or :

[0130] If the total adjustment margin of the current category of adjustable resource equipment can be completely decomposed, it will be allocated according to the maximum adjustment capacity, and the decomposed residual amount will be set to zero;

[0131] If it cannot be completely decomposed, the current category resources are adjusted to the maximum capacity first, and the decomposition remaining amount is updated and transferred to the next priority resource;

[0132] S55: Generate control instructions for each adjustable resource device according to the decomposition result, and send the control instructions to the adjustable resource devices one by one for execution.

[0133] By judging whether the target power regulation command is between the total upward and downward power limits of the microgrid, it is ensured that the command is executed within the capacity of the microgrid, thereby improving the response accuracy and safety of the regulation command; for commands that cannot be responded to, timely feedback information is sent to the distribution automation master station to avoid unnecessary resource consumption.

[0134] According to the upward or downward adjustment amount of the regulation demand and the real-time adjustment margin of various adjustable resource equipment, the regulation instructions are decomposed step by step according to the priority level to achieve the optimal scheduling of resources. By giving priority to adjusting high-priority resources and reducing the use of low-response rate resources, the overall response efficiency of the microgrid is improved.

[0135] By dynamically updating the decomposed residual amount, the gradual optimization of the assigned tasks is ensured, the capacity of the adjustable resources is maximized, the unused adjustment resources remain in their original state, and unnecessary equipment start-up and shutdown or adjustment frequency is reduced, thereby reducing equipment wear and energy consumption.

[0136] As a preferred embodiment of the above embodiment, in step S60, according to the real-time feedback information and execution status of the adjustable resource device, the adjustment instruction decomposition result is dynamically updated until all the decomposed tasks corresponding to the adjustment instruction are completed to ensure the optimal execution effect of the adjustment instruction, the steps include:

[0137] S61: real-time collection of operating status information of each adjustable resource device in the microgrid during the execution of control instructions, including actual power adjustment status and device feedback information;

[0138] S62: According to the operation status information, it is determined whether each adjustable resource device has completed the assigned adjustment task.

[0139] If the adjustable resource device fails to completely perform the assigned adjustment task, the unfinished adjustment amount is recorded and the unfinished adjustment amount is updated to the decomposed remaining amount;

[0140] S63: Based on the updated decomposed remaining amount, re-execute the adjustment instruction decomposition according to the priority order of the remaining adjustable resources to generate a supplementary control instruction;

[0141] S64: Send the supplementary control instruction to the relevant adjustable resource equipment, monitor the execution result in real time, and repeat steps S61 to S63 until the decomposition remainder is zero, that is, all decomposition tasks are completed.

[0142] By collecting the operating status information of adjustable resource equipment in real time and dynamically judging the task execution status, a closed-loop control system of monitoring, feedback and updating is formed. If the equipment fails to complete the assigned adjustment task, the unfinished adjustment amount is immediately recorded and the decomposition remaining amount is updated to ensure the timeliness and accuracy of task adjustment.

[0143] In the event that equipment adjustment fails or the task is not fully executed, the adjustment tasks are reallocated based on the updated decomposed remaining amount to avoid adjustment failure due to the limitations of a single device. Supplementary tasks are allocated in order of priority of the remaining adjustable resources to ensure optimal use of resources, thereby improving the flexibility and accuracy of the overall adjustment capability.

[0144] By dynamically updating the decomposition of the remaining amount and re-executing the priority order, the remaining adjustable resources can be maximized, unnecessary adjustment redundancy can be reduced, and low-priority or slow-response resources can be prevented from participating in adjustment too early, thereby improving resource scheduling efficiency.

[0145] The adjustment priority of the microgrid energy gateway can be set according to user needs. Without loss of generality, it is assumed that the adjustment priority order is: charging pile>energy storage>photovoltaic>air conditioning (considering that the response time of air conditioning to adjust the power consumption is the slowest, it is ranked last). In this embodiment, for the convenience of understanding, step S50 and step S60 are decomposed and explained as follows:

[0146] like Figure 3 As shown, the flowchart corresponding to steps A1 to A3 is as follows:

[0147] Step A1: The energy gateway determines whether instruction decomposition needs to be executed

[0148] The energy gateway receives the target power adjustment instruction issued by the distribution automation master station If the command value is in the microgrid total active power limit and total down-regulated active power limit Between , then jump to step A2; otherwise, the energy gateway cannot execute the instruction decomposition, that is, the microgrid cannot respond to the adjustment instruction of the master station, and the energy gateway sends the information to the distribution automation master station.

[0149] Step A2: Determine whether to increase or decrease the power decomposition

[0150] The target power adjustment command Real-time off-grid power with microgrid For comparison, if , then jump to step A3.1 to calculate the upward adjustment amount and prepare the upward adjustment amount decomposition; otherwise, jump to step A3.2 to calculate the downward adjustment amount and prepare the downward adjustment amount decomposition.

[0151] Step A3: Calculate the upward or downward adjustment amount and initialize the decomposition residual amount

[0152] Step A3.1: Increase the decomposition amount According to the formula Calculate and decompose the remaining The initial value is based on Assign a value and then jump to step A4.1.

[0153] Step A3.2: Down-regulate the decomposition amount According to the formula Calculate and decompose the remaining The initial value is based on Make the assignment and then jump to step A4.2.

[0154] As shown in Figure 4(a), it is the flowchart corresponding to steps A4.1→A5.1→A6.1, and Figure 4(b) is the flowchart corresponding to A4.2→A5.2→A6.2. Therefore, the steps corresponding to steps A4 to A6 are as follows:

[0155] Step A4: Determine whether the adjustable resources (charging piles) of priority 1 can decompose all the remaining decomposition quantities

[0156] Step A4.1: If the remaining amount is decomposed Not less than the total upward adjustment margin of Class 1 equipment (charging piles) (Right now ), each remotely adjustable charging pile device increases the charging power according to its maximum increase margin, and according to the formula Update the decomposed remaining amount, and then jump to step A7.1; otherwise, it means that the decomposition of the remaining amount can be completed by adjusting the charging pile alone, initialize the charging pile device index c that performs the decomposition (c=1, all remotely adjustable charging pile devices are numbered and sorted according to priority 1, 2, ...), and jump to step A5.1 to start decomposing the remaining amount one by one.

[0157] Step A4.2: If the remaining amount is decomposed Not less than the total reduction margin of Class 1 equipment (charging piles) (Right now ), each remotely adjustable charging pile device reduces the charging power according to its maximum reduction margin, and according to the formula Update the decomposed remaining amount, and then jump to step A7.2; otherwise, it means that the decomposition of the remaining amount can be completed by adjusting the charging pile alone, initialize the charging pile device index c that performs the decomposition (c=1, all remotely adjustable charging pile devices are numbered and sorted according to priority 1, 2, ...), and jump to step A5.2 to start decomposing the remaining amount one by one.

[0158] Step A5: Determine whether charging pile c can complete the decomposition task of the remaining decomposition amount

[0159] Step A5.1: If the decomposed residual is not less than the maximum upward adjustment margin of charging pile c (i.e. ), it means that only adjusting charging pile c cannot decompose the remaining decomposition amount. At this time, the charging power of charging pile c is increased according to its maximum increase margin, and jump to step A6.1; otherwise, it means that only adjusting charging pile c can decompose the remaining decomposition amount. At this time, the charging power of charging pile c is decomposed according to the remaining amount. Adjust upward to decompose the remaining amount , the decomposition is completed.

[0160] Step A5.2: If the decomposed residual is not less than the maximum down-regulation margin of charging pile c (i.e. ), it means that only adjusting charging pile c cannot decompose the remaining decomposition amount. At this time, the charging power of charging pile c is reduced according to its maximum reduction margin, and jump to step A6.2; otherwise, it means that only adjusting charging pile c can decompose the remaining decomposition amount. At this time, the charging power of charging pile c is decomposed according to the remaining amount. Adjust downward to break down the remaining amount , the decomposition is completed.

[0161] Step A6: Update the remaining decomposition

[0162] Step A6.1: According to the formula Update the decomposition remaining amount, update the charging pile index to the next one (i.e. c=c+1), and jump to step A5.1 to continue decomposition.

[0163] Step A6.2: According to the formula Update the decomposition remaining amount, update the charging pile index to the next one (i.e. c=c+1), and jump to step A5.2 to continue decomposition.

[0164] FIG5(a) is a flowchart corresponding to step A7.1→A8.1→A9.1, and FIG5(b) is a flowchart corresponding to step A7.2→A8.2→A9.2. Therefore, the steps corresponding to steps A7 to A9 are as follows:

[0165] Step A7: Determine whether the adjustable resources (energy storage) of priority 2 can decompose all the remaining decomposition quantities

[0166] Step A7.1: If the remaining amount is decomposed Not less than the total upward adjustment margin of Class 2 equipment (energy storage) (Right now ), each remotely adjustable energy storage device adjusts the charging power up or the discharging power down according to its maximum adjustment margin, and according to the formula Update the decomposed remaining amount, and then jump to step A10.1; otherwise, it means that the decomposition of the remaining decomposition amount can be completed by adjusting the energy storage only, initialize the index e of the energy storage device that performs the decomposition (e=1, all remotely adjustable energy storage devices are numbered and sorted according to priority 1, 2, ...), and jump to step A8.1 to start decomposing the remaining amount energy storage by energy storage.

[0167] Step A7.2: If the remaining amount is decomposed Not less than the total reduction margin of Class 2 equipment (energy storage) (Right now ), each remotely adjustable energy storage device adjusts the charging power down or the discharging power up according to its maximum adjustment margin, and according to the formula Update the decomposed remaining amount, and then jump to step A10.2; otherwise, it means that the decomposition of the remaining decomposition amount can be completed by adjusting the energy storage only, initialize the index e of the energy storage device that performs the decomposition (e=1, all remotely adjustable energy storage devices are numbered and sorted according to priority 1, 2, ...), and jump to step A8.2 to start decomposing the remaining amount energy storage by energy storage.

[0168] Step A8: Determine whether the energy storage e can complete the decomposition task of the remaining decomposition amount

[0169] Step A8.1: If the decomposition residual is not less than the maximum upward adjustment margin of energy storage e (i.e. ), it means that only adjusting the energy storage e cannot decompose the remaining decomposition amount. At this time, the energy storage e increases the charging power or decreases the discharging power according to its maximum increase margin, and jumps to step A9.1; otherwise, it means that only adjusting the energy storage e can decompose the remaining decomposition amount. At this time, the energy storage e is adjusted according to its maximum increase margin. Increase the charging power or decrease the discharging power to decompose the remaining amount , the decomposition is completed.

[0170] Step A8.2: If the decomposition residual is not less than the maximum down-regulation margin of energy storage e (i.e. ), it means that only adjusting the energy storage e cannot decompose the remaining decomposition amount. At this time, the energy storage e reduces the charging power or increases the discharging power according to its maximum downward adjustment margin, and jumps to step A9.2; otherwise, it means that only adjusting the energy storage e can decompose the remaining decomposition amount. At this time, the energy storage e is adjusted according to Reduce the charging power or increase the discharging power to decompose the remaining amount , the decomposition is completed.

[0171] Step A9: Update the remaining decomposition

[0172] Step A9.1: According to the formula Update the decomposition remainder, update the energy storage index to the next one (i.e., e=e+1), and jump to step A8.1 to continue decomposition.

[0173] Step A9.2: According to the formula Update the decomposition remainder, update the energy storage index to the next one (i.e., e=e+1), and jump to step A8.2 to continue decomposition.

[0174] As shown in FIG6(a), the flowchart corresponding to steps A10.1→A11.1→A12.1, and FIG6(b) is the flowchart corresponding to steps A10.2→A11.2→A12.2, the steps corresponding to steps A10 to A12 are as follows:

[0175] Step A10: Determine whether the adjustable resources (photovoltaic) of priority level 3 can decompose all the remaining decompositions

[0176] Step A10.1: If the remaining amount is decomposed Not less than the total reduction margin of 3 types of equipment (photovoltaic) (Right now ), each remotely adjustable photovoltaic device will reduce its output according to its maximum reduction margin, and according to the formula Update the decomposed residual amount, and then jump to step A13.1; otherwise, it means that the decomposition of the residual decomposition amount can be completed by adjusting the photovoltaics only, initialize the photovoltaic device index p that performs the decomposition (p=1, all remotely adjustable photovoltaic devices are numbered and sorted according to priority 1,2,...), and jump to step A11.1 to start decomposing the residual amount photovoltaic by photovoltaic.

[0177] Step A10.2: If the remaining amount is decomposed Not less than the total upward adjustment margin of Class 3 equipment (photovoltaic) (Right now ), each remotely adjustable photovoltaic device increases its output according to its maximum increase margin, and according to the formula Update the decomposed residual amount, and then jump to step A13.2; otherwise, it means that the decomposition of the residual decomposition amount can be completed by adjusting the photovoltaics only, initialize the photovoltaic device index p that performs the decomposition (p=1, all remotely adjustable photovoltaic devices are numbered and sorted according to priority 1,2,...), and jump to step A11.2 to start decomposing the residual amount photovoltaic by photovoltaic.

[0178] Step A11: Determine whether the photovoltaic p can complete the decomposition task of the remaining decomposition amount

[0179] Step A11.1: If the decomposed residual is not less than the maximum down-regulation margin of PV p (i.e. ), it means that the remaining decomposition cannot be fully decomposed by adjusting the photovoltaic p alone. In this case, the photovoltaic p reduces its output according to its maximum downward adjustment margin and jumps to step A12.1; otherwise, it means that the remaining decomposition can be fully decomposed by adjusting the photovoltaic p alone. In this case, the photovoltaic p is adjusted according to its maximum downward adjustment margin. Reduce output and decompose the remaining amount , the decomposition is completed.

[0180] Step A11.2: If the decomposed residual is not less than the maximum upward adjustment margin of PV p (i.e. ), it means that only adjusting PV p cannot decompose the remaining decomposition, at this time PV p increases the output according to its maximum increase margin and jumps to step A12.2; otherwise, it means that only adjusting PV p can decompose the remaining decomposition, at this time PV p is adjusted according to its maximum increase margin. Increase the output and decompose the remaining amount , the decomposition is completed.

[0181] Step A12: Update the remaining decomposition amount

[0182] Step A12.1: According to the formula Update the decomposition remainder, update the PV index to the next one (i.e., p = p + 1), and jump to step A11.1 to continue decomposition.

[0183] Step A12.2: According to the formula Update the decomposition remainder, update the PV index to the next one (i.e., p = p + 1), and jump to step A11.2 to continue decomposition.

[0184] Step A13: Prepare priority 4 adjustable resources (air conditioning) to perform the remaining decomposed tasks

[0185] The index a of the air-conditioning device to be decomposed is initialized (a=1), and all remotely adjustable energy storage devices are numbered and sorted according to priority 1, 2,….

[0186] As shown in FIG. 7( a ), the flowchart corresponding to steps A14.1→A15.1→A16.1, and FIG. 7( b ) is the flowchart corresponding to steps A14.2→A15.2→A16.2, the steps corresponding to steps A14 to A15 are as follows:

[0187] Step A14: Determine whether air conditioner a can complete the decomposition task of the remaining decomposition amount

[0188] Step A14.1: If the decomposed residual is not less than the maximum upward adjustment margin of air conditioner a (i.e. ), it means that only adjusting air conditioner a cannot decompose the remaining decomposition, and air conditioner a increases the power according to its maximum increase margin, and jumps to step A15.1; otherwise, it means that only adjusting air conditioner a can decompose the remaining decomposition, and air conditioner a presses Upload the electricity and decompose the remaining , the decomposition is completed.

[0189] Step A14.2: If the decomposed residual is not less than the maximum down-regulation margin of air conditioner a (i.e. ), it means that only adjusting air conditioner a cannot decompose the remaining decomposition, and air conditioner a reduces the power according to its maximum reduction margin, and jumps to step A15.2; otherwise, it means that only adjusting air conditioner a can decompose the remaining decomposition, and air conditioner a presses Down-call electric power, decompose the remaining , the decomposition is completed.

[0190] Step A15: Update the remaining decomposition amount

[0191] Step A15.1: According to the formula Update the decomposition remainder, update the air conditioner index to the next one (i.e. a=a+1), and jump to step A14.1 to continue decomposition.

[0192] Step A15.2: According to the formula Update the decomposition remainder, update the air conditioner index to the next one (i.e. a=a+1), and jump to step A14.2 to continue decomposition.

[0193] A communication channel is established between the adjustable resources in the microgrid and the distribution automation master station through the energy gateway. According to the framework proposed in the present invention, the edge layer adjustable resources such as photovoltaics, energy storage, charging piles, building air conditioners, etc. in the microgrid are connected to the microgrid energy gateway through communication protocols such as IEC104, modbus, and mqtt; the energy gateway is connected to the distribution automation master station through a 4G / 5G wireless private network or optical fiber through a secure access area, opening up the communication links between the three layers of the distribution automation master station, the microgrid energy gateway, and the adjustable resources, providing a two-way information flow channel for realizing the two core functions of northward "aggregation" and southward "decomposition" of distribution-micro collaborative interaction.

[0194] As the agent of adjustable resources in the microgrid, the microgrid energy gateway can classify and aggregate the upward and downward adjustment margins of adjustable resources such as photovoltaic, energy storage, charging piles, and air conditioners in the microgrid according to the real-time adjustment capability evaluation and aggregation algorithm of microgrid adjustable resources proposed in the present invention, and form the real-time upward and downward power margins and limits of the entire microgrid, which are sent northward to the distribution automation master station. Based on this information, the distribution automation master station can display the aggregation adjustment capabilities of different categories of adjustable resources in the microgrid and the overall adjustment capabilities of the microgrid.

[0195] The microgrid energy gateway is the medium for the microgrid to participate in the coordination between distribution and microgrid. The proposed regulation instruction decomposition algorithm can decompose the regulation instructions issued by the distribution automation master station according to the priority of different types of adjustable resources, and distribute them to the adjustable devices to execute relevant control instructions. Taking the field test of a microgrid in a certain park participating in the coordination between distribution and microgrid as an example, Figure 8As shown, at 22:28, the energy gateway receives a -24kW power reduction adjustment instruction issued by the distribution automation master station. Only adjusting the charging pile of the Class 1 priority equipment can meet the power reduction demand, and the charging power is reduced by 24kW to complete the decomposition and execution of the adjustment instruction; at 22:30, the distribution automation master station again issues a -26kW power reduction adjustment instruction. At this time, the charging pile of the Class 1 priority equipment is adjusted first, and the charging power is reduced by 11kW. The power drops to 0kW, which still does not meet the adjustment demand of the distribution automation master station. It is necessary to continue to adjust the energy storage of the Class 2 priority equipment. The charging power of the energy storage is reduced by 15kW, and the remaining decomposition amount is 0. The charging pile and the energy storage jointly participate in the decomposition and execution of the adjustment instruction, and the decomposition is completed.

[0196] The present invention also includes a microgrid energy gateway aggregation and decomposition device supporting micro-distribution collaboration, using the above method, such as Fig. 9 As shown, including:

[0197] The communication unit is used to establish the overall framework of microgrid participating in the distribution and micro-cooperation through the energy gateway. The energy gateway serves as the medium for the adjustable resource equipment in the microgrid. The adjustable resource equipment in the microgrid and the distribution automation master station establish a north-south communication channel through the energy gateway to complete two-way information interaction;

[0198] The monitoring unit is used to monitor the operating status information of various adjustable resource devices in the microgrid in real time through the energy gateway. The adjustable resource devices include at least photovoltaic, energy storage, charging piles and building air conditioners, and calculate the upward adjustment margin and downward adjustment power margin of various resource devices based on the operating status information;

[0199] A calculation unit is used to calculate the total upward power margin and total downward power margin of the microgrid based on the upward power margin and downward power margin of various adjustable resource devices through the energy gateway to form a real-time regulation capability evaluation value of the microgrid;

[0200] An uploading unit is used to upload the real-time regulation capability evaluation value of the microgrid, including the total upward power limit and the total downward power limit, to the distribution automation master station through the energy gateway for distribution network regulation demand analysis and decision-making;

[0201] The decomposition unit is used for the energy gateway to receive the regulation instructions issued by the distribution automation master station, and according to the regulation instructions, combined with the real-time regulation margin and regulation characteristics of various adjustable resource devices in the microgrid, the regulation instructions are decomposed step by step according to the set priority order, and the control instructions of various adjustable resource devices in the microgrid are generated, and the control instructions are issued to each adjustable resource device;

[0202] The execution unit is used to dynamically update the decomposition results of the adjustment instructions according to the real-time feedback information and execution status of the adjustable resource equipment until all the decomposition tasks corresponding to the adjustment instructions are completed, thereby ensuring the optimal execution effect of the adjustment instructions.

[0203] See also Fig.10 A computer device 400 provided in an embodiment of the present application includes: a processor 410 and a memory 420, wherein the memory 420 stores a computer program executable by the processor 410, and when the computer program is executed by the processor 410, the above method is executed.

[0204] The embodiment of the present application further provides a storage medium 430 on which a computer program is stored. When the computer program is run by the processor 410, the above method is executed.

[0205] Among them, the storage medium 430 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable red-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, disk or optical disk.

[0206] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0207] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0208] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0209] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0210] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0211] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0212] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0213] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for aggregating and decomposing microgrid energy gateways supporting distribution-micro collaboration, characterized in that: The steps include: S10: Establish an overall framework for the microgrid to participate in the distribution and micro-cooperation through the energy gateway. The energy gateway serves as a medium for the adjustable resource equipment in the microgrid. The adjustable resource equipment in the microgrid and the distribution automation master station establish a north-south communication channel through the energy gateway to complete two-way information interaction. S20: monitoring the operating status information of various adjustable resource devices in the microgrid in real time through the energy gateway, wherein the adjustable resource devices include at least photovoltaic, energy storage, charging piles and building air conditioners, and calculating the upward adjustment margin and downward adjustment power margin of various resource devices based on the operating status information; S30: Based on the upward power margin and downward power margin of the various adjustable resource devices, the total upward power margin and the total downward power margin of the microgrid are aggregated and calculated through the energy gateway to form a real-time regulation capability evaluation value of the microgrid; S40: uploading the real-time regulation capability evaluation value of the microgrid, including the total upward power limit and the total downward power limit, to the distribution automation master station through the energy gateway for distribution network regulation demand analysis and decision-making; S50: The energy gateway receives the adjustment instruction issued by the distribution automation master station, and according to the adjustment instruction, combined with the real-time adjustment margin and adjustment characteristics of various adjustable resource devices in the microgrid, decomposes the adjustment instruction step by step according to the set priority order, generates the control instruction of each adjustable resource device in the microgrid, and sends the control instruction to each adjustable resource device; S60: dynamically updating the decomposition result of the adjustment instruction according to the real-time feedback information and execution status of the adjustable resource device until all decomposed tasks corresponding to the adjustment instruction are completed, thereby ensuring the optimal execution effect of the adjustment instruction.

2. The method for aggregating and decomposing microgrid energy gateways supporting distribution-micro collaboration according to claim 1 is characterized in that: In step S20, the calculation model of the total photovoltaic upward adjustment margin and downward adjustment margin includes: ； ； In the formula, and They represent the total upward power margin and total downward power margin of all photovoltaics in the microgrid at time t, respectively. The subscript p represents the photovoltaic index. The set represents the remotely adjustable photovoltaic collection in the microgrid, and They respectively represent the theoretical maximum output and controlled output of photovoltaic p at time t, where the theoretical maximum output value of photovoltaic is determined according to the real-time meteorological monitoring value and the control mode of the inverter.

3. The method for aggregating and decomposing microgrid energy gateways supporting distribution-micro collaboration according to claim 1 is characterized in that: In step S20, the calculation model of the total upward adjustment margin and downward adjustment margin of energy storage includes: ； ； In the formula, and They represent the total upward power margin and total downward power margin of all energy storage systems in the microgrid at time t, respectively. The subscript e represents the energy storage system index. Represents the set of remotely adjustable energy storage systems in the microgrid, and They represent the maximum power and minimum power of the energy storage system e, Represents the real-time control power of the energy storage system e at time t.

4. The method for aggregating and decomposing microgrid energy gateways supporting distribution-micro collaboration according to claim 1 is characterized in that: In step S20, the calculation model of the total upward adjustment margin and downward adjustment margin of the charging pile includes: ； ； In the formula, and They represent the total upward power margin and total downward power margin of all charging piles in the microgrid at time t, respectively. The subscript c represents the charging pile index. Represents the collection of charging piles that can be remotely adjusted in the microgrid, and They respectively represent the maximum charging power and the controlled charging power of the charging pile c at time t, where the maximum charging power is equal to the minimum value of the rated charging power of the charging pile c and the rated charging power of the electric vehicle connected to the charging pile c at time t.

5. The method for aggregating and decomposing microgrid energy gateways supporting distribution-micro collaboration according to claim 1 is characterized in that: In step S20, the calculation model of the total upward adjustment margin and downward adjustment margin of the building air conditioner includes: ； ； ； ； In the formula, and They represent the total upward and downward active power margins of all air conditioners in the microgrid at time t, respectively. The subscript a represents the air conditioner index. represents the set of remotely adjustable air conditioners in the microgrid, represents the power consumption of air conditioner a at time t, and They represent the maximum power consumption and minimum power consumption allowed by air conditioner a at time t, It indicates the minimum to maximum temperature range that meets the human comfort requirements in the building where the air conditioner a is located. represents the indoor temperature of the building where air conditioner a is located at time t-1, It represents the ambient temperature outside the building where air conditioner a is located at time t. represents the heat transfer coefficient of the building where the air conditioner a is located, and They represent the cooling and heating coefficients of air conditioner a respectively.

6. The method for aggregating and decomposing microgrid energy gateways supporting distribution-micro collaboration according to claim 1 is characterized in that: In step S30, the calculation model of the total upward power margin and the total downward power margin of all adjustable resource devices in the microgrid includes: ； ； In the formula, and represents the total upward and downward active power margin of the microgrid at time t, and They represent the total upward power margin and total downward power margin of all photovoltaics in the microgrid at time t, and They represent the total upward power margin and total downward power margin of all energy storage systems in the microgrid at time t, and They represent the total upward power margin and total downward power margin of all charging piles in the microgrid at time t, and They represent the total upward and downward active power margins of all air conditioners in the microgrid at time t respectively.

7. The method for aggregating and decomposing microgrid energy gateways supporting distribution-micro collaboration according to claim 1 is characterized in that: In step S40, the calculation model of the total upward power limit and the total downward power limit includes: ； ； Where: and They represent the active power limits that can be adjusted up and down by the microgrid at time t, represents the power exchanged by the microgrid at the grid connection point at time t, and It represents the total upward and downward active power margin of the microgrid at time t.

8. The method for aggregating and decomposing microgrid energy gateways supporting distribution-micro collaboration according to claim 1 is characterized in that: In step S50, the energy gateway receives the adjustment instruction issued by the distribution automation master station, and according to the adjustment instruction, combined with the real-time adjustment margin and adjustment characteristics of various adjustable resource devices in the microgrid, decomposes the adjustment instruction step by step according to the set priority order, generates the control instruction of each adjustable resource device in the microgrid, and sends the control instruction to each adjustable resource device, and the steps include: S51: The energy gateway receives a target power adjustment instruction issued by the distribution automation master station ; S52: Determine the target power adjustment instruction Whether it is within the total upward power limit of the microgrid and the total down-regulated power limit If yes, then continue to execute step S53, if no, then generate feedback information that the microgrid cannot respond and upload it to the distribution automation master station; S53: Adjust the instruction based on the target power Real-time grid-connected power of microgrid Difference, calculate the corresponding increase in power regulation demand Or downgrade , and initialize the decomposition residual or ; S54: According to the priority order of each type of adjustable resource equipment in the microgrid, determine whether the decomposition of the remaining amount can be completed from high to low. or : If the total adjustment margin of the current type of adjustable resource equipment can be completely decomposed, it is allocated according to the maximum adjustment capacity, and the decomposed remainder is set to zero; If it cannot be completely decomposed, the current category resources are adjusted to the maximum capacity first, and the decomposition remaining amount is updated, and the next priority resource is transferred; S55: Generate control instructions for each adjustable resource device according to the decomposition result, and send the control instructions to the adjustable resource devices one by one for execution.

9. The method for aggregating and decomposing microgrid energy gateways supporting distribution-micro collaboration according to claim 1 is characterized in that: In step S60, according to the real-time feedback information and execution status of the adjustable resource device, the adjustment instruction decomposition result is dynamically updated until all the decomposed tasks corresponding to the adjustment instruction are completed to ensure the optimal execution effect of the adjustment instruction. The steps include: S61: real-time collection of operating status information of each adjustable resource device in the microgrid during the execution of control instructions, including actual power adjustment status and device feedback information; S62: judging whether each adjustable resource device has completed the assigned adjustment task according to the operation status information: If the adjustable resource device fails to completely perform the assigned adjustment task, the unfinished adjustment amount is recorded, and the unfinished adjustment amount is updated to the decomposed remaining amount; S63: Based on the updated decomposed remaining amount, re-execute the adjustment instruction decomposition according to the priority order of the remaining adjustable resources to generate a supplementary control instruction; S64: Send the supplementary control instruction to the relevant adjustable resource device, monitor the execution result in real time, and repeat steps S61 to S63 until the decomposition remainder is zero, that is, all decomposition tasks are completed.

10. A microgrid energy gateway aggregation and decomposition device supporting distribution and micro-cooperation, characterized in that: Use of the method according to any one of claims 1 to 9, comprising: A communication unit is used to establish an overall framework for the microgrid to participate in the distribution and micro-cooperation through the energy gateway. The energy gateway serves as a medium for the adjustable resource equipment in the microgrid. The adjustable resource equipment in the microgrid and the distribution automation master station establish a north-south communication channel through the energy gateway to complete two-way information interaction; A monitoring unit, configured to monitor in real time the operating status information of various adjustable resource devices in the microgrid through the energy gateway, wherein the adjustable resource devices include at least photovoltaic, energy storage, charging piles and building air conditioners, and calculate the upward adjustment margin and downward adjustment power margin of various resource devices based on the operating status information; A calculation unit, configured to calculate the total upward power margin and the total downward power margin of the microgrid through the energy gateway based on the upward power margin and the downward power margin of the various adjustable resource devices, so as to form a real-time regulation capability evaluation value of the microgrid; An uploading unit, used for uploading the real-time regulation capability evaluation value of the microgrid, including the total upward power limit and the total downward power limit, to the distribution automation master station through the energy gateway for distribution network regulation demand analysis and decision-making; A decomposition unit, configured for the energy gateway to receive the regulation instruction issued by the distribution automation master station, and according to the regulation instruction, combined with the real-time regulation margin and regulation characteristics of various adjustable resource devices in the microgrid, decompose the regulation instruction step by step according to the set priority order, generate the control instruction of each adjustable resource device in the microgrid, and issue the control instruction to each adjustable resource device; The execution unit is used to dynamically update the decomposition result of the adjustment instruction according to the real-time feedback information and execution status of the adjustable resource equipment until all the decomposed tasks corresponding to the adjustment instruction are completed, thereby ensuring the optimal execution effect of the adjustment instruction.

11. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 9 is implemented.

12. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 9 is implemented.

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