Distributed energy coordinated access method and access device of power system

Abstract

The invention discloses a distributed energy coordinated access method and access device of an electric power system. The method comprises the following steps: constructing a micro-grid for each power distribution area in the electric power system; evaluating whether the quantity of the electric energy resources which are predicted in real time and are about to be distributed to the micro-grid meets the electricity consumption requirements of all loads in a power distribution area where the micro-grid is located or not; when the evaluation result is that the power consumption demand is not met, budgeting an electric energy demand gap of the power distribution area which does not meet the power consumption demand, selecting distributed electric energy equipment which provides electric energy sufficient to fill the budgeted electric energy demand gap, and filling the electric energy demand gap by adopting the electric energy provided by the selected distributed electric energy equipment; and detecting whether the electric energy provided by the selected distributed electric power energy equipment in real time exceeds the real-time electric energy demand gap of the power distribution area where the power consumption demand is not met, and if so, storing the exceeding electric energy to an energy storage battery in the micro-grid. The method has the advantages of ensuring that the power supply quantity distributed to the power distribution area is very sufficient and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of distributed energy coordination, and particularly relates to a distributed energy coordination access method and access device of a power system. BACKGROUND

[0002] Distributed energy is very convenient to supply power to a local area when the local area is short of power due to the small scale and wide distribution of the distributed energy. However, when the distributed energy is accessed to the power system, the distributed energy will affect the distribution network of the power system. In the related conventional technical solutions, the distributed energy is accessed to the distribution area of the power system according to the location of the distributed energy, and the access point of the distributed energy accessed to the power system is not set. The distributed energy is not necessarily located in the distribution area short of power in the power system, so that it is difficult to set the access point of the distributed energy accessed to the power system, and thus the power of the distributed energy cannot be accurately distributed to the distribution area in need of power, the reliability of the overall power distribution of the power system is reduced, and the coordinated operation of the multiple distributed energies in the power system cannot be ensured. SUMMARY

[0003] The present application provides a distributed energy coordination access method and access device of a power system, which optimizes the related conventional technical solutions.

[0004] In a first aspect, an embodiment of the present application provides a distributed energy coordination access method of a power system, which can include the following steps:

[0005] At least one micro-grid is constructed for each distribution area in the power system, and the power supply of the distribution area is managed through the micro-grid;

[0006] The amount of power resources to be distributed to the micro-grid in the power system is predicted in real time, and whether the amount of power resources to be distributed to the micro-grid in real time meets the power consumption demand of all loads in the distribution area where the micro-grid is located is evaluated, and an evaluation result of meeting the power consumption demand or not meeting the power consumption demand is obtained;

[0007] When the evaluation result is not meeting the power consumption demand, the power demand gap of the distribution area not meeting the power consumption demand is budgeted, a distributed power energy device providing power sufficient to fill the budgeted power demand gap is selected, and the selected distributed power energy device is accessed to the micro-grid constructed for the distribution area where the power consumption demand is not met, and the power provided by the selected distributed power energy device is used to fill the power demand gap of the distribution area where the power consumption demand is not met;

[0008] detecting whether the power provided by the selected distributed power source in real time exceeds the real-time power demand gap of the power distribution area where the power demand is not met, and if so, storing the power provided by the selected distributed power source in real time that exceeds the real-time power demand gap of the power distribution area where the power demand is not met to the energy storage battery in the micro-grid.

[0009] By the above technical solution, it is ensured that the power distribution to the power distribution area is very sufficient, and the micro-grid is set as the power source access point of the distributed power source to accurately distribute the power of the distributed power source to the power distribution area in need of power, thereby ensuring the coordinated operation and optimized configuration of various distributed power sources in the power system, and effectively improving the reliability and flexibility of overall power distribution of the power system.

[0010] In a preferred example, the scheme of the first aspect of the application can be further configured as:

[0011] The distributed power source coordinated access method of the power system can further include the following steps:

[0012]

[0013] In the formula, E n represents the real-time power demand of the nth load in the power distribution area where the micro-grid is located, E e represents the predicted amount of power resources to be distributed by the power system to the micro-grid, γ n represents the weight factor of the nth load power demand, n is a positive integer, 1≤n≤N, N is the total number of loads in the power distribution area where the micro-grid is located, φ represents the effective utilization rate of the micro-grid for the power distributed by the power system, φ>0, and ε is a constant.

[0014] In the above technical solution, if the above formula is satisfied, the evaluation result of meeting the power demand is obtained, otherwise, the evaluation result of not meeting the power demand is obtained.

[0015] In a preferred example, the scheme of the first aspect of the application can be further configured as:

[0016] The distributed power source coordinated access method of the power system can further include the following steps:

[0017] When the real-time power demand gap of the power distribution area where the unsatisfied power demand is located is greater than the real-time power provided by all the distributed power source devices in the micro-grid, the real-time power gap of the power distribution area where the unsatisfied power demand is located is filled by the power stored in the energy storage battery of the micro-grid.

[0018] By the above technical solution, it is further ensured that the power distribution to the power distribution area is very sufficient, and the reliability and flexibility of the overall power distribution of the power system are further improved.

[0019] In a preferred example, the scheme of the first aspect of the application can be further configured as:

[0020] The distributed energy coordinated access method of the power system can further include the following steps:

[0021] The real-time detection is performed on whether the actual power resource quantity of the power system distributed to the micro-grid exceeds the real-time predicted power resource quantity of the power system to be distributed to the micro-grid. If yes, the actual power resource quantity of the power system distributed to the micro-grid exceeds the real-time predicted power resource quantity of the power system to be distributed to the micro-grid, and the excess power resource quantity is stored in the energy storage battery of the micro-grid. If not, the power of the energy storage battery of the micro-grid is accessed to the micro-grid.

[0022] In the above technical solution, when the actual power resource quantity of the power system distributed to the micro-grid exceeds the real-time predicted power resource quantity, the excess power resource quantity is stored in the energy storage battery of the micro-grid, and when the actual power resource quantity of the power system distributed to the micro-grid does not exceed the real-time predicted power resource quantity, the power of the energy storage battery is accessed to the micro-grid, thereby further ensuring the coordinated operation and optimized configuration of the multiple distributed energies in the power system.

[0023] In a preferred example, the scheme of the first aspect of the application can be further configured as:

[0024] The distributed energy coordinated access method of the power system can further include the following steps:

[0025] The real-time power of the energy storage battery in the micro-grid is detected. When it is detected that the real-time power of the energy storage battery in the micro-grid is lower than the preset power, the energy storage battery in the micro-grid is charged by the distributed power source device. When it is detected that the real-time power of the energy storage battery in the micro-grid is higher than the preset power, the charging of the energy storage battery in the micro-grid by the distributed power source device is suspended again.

[0026] In the technical solution, the real-time power of the energy storage battery in the micro-grid is always maintained at a certain power, so that the micro-grid can supply power to the power distribution area at any time, thereby further improving the reliability and flexibility of the overall power distribution of the power system.

[0027] In a preferred example, the scheme of the first aspect of the application can be further configured as:

[0028] The method for coordinating access of distributed energy sources of a power system, when the evaluation result is that the power demand is not met, the power demand gap of the power distribution area where the power demand is not met is budgeted, a distributed power source device providing power sufficient to fill the budgeted power demand gap is selected, and the selected distributed power source device is accessed to a micro-grid constructed for the power distribution area where the power demand is not met, and the power provided by the selected distributed power source device is used to fill the power demand gap of the power distribution area where the power demand is not met. In the step of budgeting the power demand gap of the power distribution area where the power demand is not met, the budgeting method includes the following expression:

[0029]

[0030] In the formula, S represents the budgeted power demand gap of the power distribution area where the power demand is not met, Z m represents the real-time power consumption of the mth load in the power distribution area managed by the micro-grid, ω m represents the effective utilization rate of the mth load for power, ω m ≠ 0, m is a positive integer, 1 ≤ m ≤ M, M is the total number of loads in the power distribution area managed by the micro-grid, and P represents the amount of power resources to be allocated to the micro-grid in the power system.

[0031] Through the above technical solution, the power demand gap of the power distribution area where the power demand is not met can be accurately budgeted.

[0032] In a second aspect, an embodiment of the application provides a device for coordinating access of distributed energy sources of a power system, which can include:

[0033] A micro-grid construction module is configured to construct at least one micro-grid for each power distribution area in the power system, and manage power supply of the power distribution area through the micro-grid;

[0034] A power demand evaluation module is configured to predict the amount of power resources to be allocated to the micro-grid in the power system in real time, and evaluate whether the amount of power resources to be allocated to the micro-grid in real time meets the power demand of all loads in the power distribution area where the micro-grid is located, to obtain an evaluation result of meeting the power demand or not meeting the power demand.

[0035] The electric energy demand gap filling module is configured to, when the evaluation result is the unmet electric energy demand, budget the electric energy demand gap of the power distribution area where the unmet electric energy demand is located, select a distributed power energy source device providing electric energy sufficient to fill the budgeted electric energy demand gap, and connect the selected distributed power energy source device to the micro-grid constructed by the power distribution area where the unmet electric energy demand is located, so as to fill the electric energy demand gap of the power distribution area where the unmet electric energy demand is located by using the electric energy provided by the selected distributed power energy source device.

[0036] The detection and storage module is configured to detect whether the electric energy provided by the selected distributed power energy source device in real time exceeds the real-time electric energy demand gap of the power distribution area where the unmet electric energy demand is located, and if so, store the electric energy provided by the selected distributed power energy source device in excess of the real-time electric energy demand gap of the power distribution area where the unmet electric energy demand is located to the energy storage battery in the micro-grid.

[0037] The second aspect of the application can be further configured in a preferred example as follows:

[0038] The distributed energy coordinated access device of the power system can further include:

[0039] The power distribution area electric energy demand gap filling module is configured to, when the real-time electric energy demand gap of the power distribution area where the unmet electric energy demand is located is greater than the electric energy provided by all the distributed power energy source devices in the micro-grid in real time, fill the electric energy demand gap of the power distribution area where the unmet electric energy demand is located in real time by using the electric energy stored in the energy storage battery of the micro-grid.

[0040] The second aspect of the application can be further configured in a preferred example as follows:

[0041] The distributed energy coordinated access device of the power system can further include:

[0042] The electric energy resource quantity real-time detection module is configured to detect whether the actual electric energy resource quantity of the power system allocated to the micro-grid in real time exceeds the real-time predicted electric energy resource quantity of the power system to be allocated to the micro-grid, and if so, store the actual electric energy resource quantity of the power system allocated to the micro-grid in real time, which exceeds the real-time predicted electric energy resource quantity of the power system to be allocated to the micro-grid, to the energy storage battery in the micro-grid, otherwise, connect the electric energy of the energy storage battery in the micro-grid to the micro-grid.

[0043] The second aspect of the application can be further configured in a preferred example as follows:

[0044] The distributed energy coordination access device of the power system can further comprise:

[0045] The energy storage battery real-time power detection module is configured to detect the real-time power of the energy storage battery in the micro-grid, and when detecting that the real-time power of the energy storage battery in the micro-grid is lower than the preset power, charge the energy storage battery in the micro-grid through the distributed power energy equipment, and when detecting that the real-time power of the energy storage battery in the micro-grid is higher than the preset power, suspend the charging of the energy storage battery in the micro-grid through the distributed power energy equipment.

[0046] On the basis of the method embodiment, the application provides a terminal embodiment;

[0047] The application provides a terminal, which comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and the processor executes the computer program to implement the power system distributed energy coordination access method according to any one of the embodiments of the application.

[0048] On the basis of the method embodiment, the application provides a storage medium embodiment;

[0049] The application provides a storage medium, which comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and the processor executes the computer program to implement the power system distributed energy coordination access method according to any one of the embodiments of the application.

[0050] The application has at least the following beneficial effects:

[0051] The power system distributed energy coordination access method of the application can ensure that the power supply to the power distribution area is very sufficient, and ensure the coordinated operation and optimized configuration of various distributed energies in the power system, thereby improving the reliability and flexibility of the overall power distribution of the power system. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 FIG. 1 is a flow chart of the power system distributed energy coordination access method according to an embodiment of the application.

[0053] Figure 2 FIG. 2 is a structural block diagram of the power system distributed energy coordination access device according to an embodiment of the application. DETAILED DESCRIPTION

[0054] With reference to the drawings, the technical solutions in the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0055] As shown in the figure, an embodiment of the present application provides a method for coordinating access of distributed energy of a power system, which can specifically include the following steps: Figure 1

[0056] Step S1, at least one micro-grid is constructed for each power distribution area in the power system, and the power supply of the power distribution area is managed through the micro-grid;

[0057] Step S2, the amount of power resources to be distributed to the micro-grid in the power system is predicted in real time, and whether the amount of power resources to be distributed to the micro-grid in real-time prediction meets the power consumption demand of all loads in the power distribution area where the micro-grid is located is evaluated, and an evaluation result of meeting the power consumption demand or not meeting the power consumption demand is obtained;

[0058] Step S3, when the evaluation result is not meeting the power consumption demand, the power demand gap of the power distribution area not meeting the power consumption demand is budgeted, a distributed power energy device providing power sufficient to fill the budgeted power demand gap is selected, and the selected distributed power energy device is connected to the micro-grid constructed for the power distribution area where the power consumption demand is not met, and the power provided by the selected distributed power energy device is used to fill the power demand gap of the power distribution area where the power consumption demand is not met;

[0059] Step S4, detecting whether the power provided by the selected distributed power energy device in real time exceeds the real-time power demand gap of the power distribution area where the power consumption demand is not met, if so, the power provided by the selected distributed power energy device in real time which exceeds the real-time power demand gap of the power distribution area where the power consumption demand is not met is stored in the energy storage battery in the micro-grid.

[0060] Through the above embodiment, it is ensured that the power supply to the power distribution area is very sufficient, and the micro-grid is set as the power energy access point of the distributed power energy device to accurately distribute the power of the distributed energy to the power distribution area in need of power, thereby ensuring the coordinated operation and optimized configuration of various distributed energies in the power system, and improving the reliability and flexibility of the overall power distribution of the power system.

[0061] ​In a preferred embodiment, if the following formula is satisfied, the evaluation result of meeting the electricity demand is obtained, otherwise, the evaluation result of not meeting the electricity demand is obtained. The specific embodiment can be: the distributed energy coordinated access method of the power system, in the step of predicting the amount of electrical energy resources that the power system will soon distribute to the microgrid in real time, and evaluating whether the amount of electrical energy resources predicted in real time that the power system will soon distribute to the microgrid meets the electricity demand of all loads in the power distribution area where the microgrid is located, the evaluation method of whether the amount of electrical energy resources predicted in real time that the power system will soon distribute to the microgrid meets the electricity demand of all loads in the power distribution area where the microgrid is located includes the following expression:

[0062]

[0063] In the formula, E n represents the real-time electricity consumption of the nth load in the power distribution area where the microgrid is located, E e represents the amount of electrical energy resources that the predicted power system will soon distribute to the microgrid, γ n represents the weight factor of the nth load electricity consumption, n is a positive integer, 1≤n≤N, N is the total number of loads in the power distribution area where the microgrid is located, represents the effective utilization rate of the electrical energy distributed by the power system to the microgrid, ε is a constant.

[0064] In a preferred embodiment, in order to further ensure that the power supply to the power distribution area is very sufficient, and further improve the reliability and flexibility of the overall power distribution of the power system, the distributed energy coordinated access method of the power system can further include the following steps:

[0065] When the real-time electrical energy demand gap of the power distribution area where the electricity demand is not met is greater than the real-time electrical energy provided by all distributed power energy equipment in the microgrid, the electrical energy stored in the energy storage battery of the microgrid is used to fill the electrical energy demand gap of the power distribution area where the electricity demand is not met.

[0066] In a preferred embodiment, in order to realize that when the amount of electrical energy resources actually distributed by the power system to the microgrid exceeds the amount of electrical energy resources predicted in real time, the excess amount of electrical energy resources is stored in the energy storage battery in the microgrid, and when the amount of electrical energy resources actually distributed by the power system to the microgrid does not exceed the amount of electrical energy resources predicted in real time, the electrical energy of the energy storage battery is connected to the microgrid, thereby further realizing the coordinated operation and optimal configuration of various distributed energies in the power system, the distributed energy coordinated access method of the power system can further include the following steps:

[0067] detecting whether the amount of electric energy actually distributed by the power system to the micro-grid in real time exceeds the amount of electric energy predicted to be distributed by the power system to the micro-grid in real time, if yes, storing the amount of electric energy actually distributed by the power system to the micro-grid in real time, which exceeds the amount of electric energy predicted to be distributed by the power system to the micro-grid in real time, to the energy storage battery in the micro-grid, otherwise, connecting the electric energy of the energy storage battery in the micro-grid to the micro-grid.

[0068] In a preferred embodiment, in order to keep the real-time electric quantity of the energy storage battery in the micro-grid at a certain amount at all times, so as to facilitate the micro-grid to supply power to the power distribution area in the power system at any time, thereby further improving the reliability and flexibility of the overall power distribution of the power system, the distributed energy coordinated access method of the power system can further include the following steps:

[0069] detecting the real-time electric quantity of the energy storage battery in the micro-grid, when detecting that the real-time electric quantity of the energy storage battery in the micro-grid is lower than the preset electric quantity, charging the energy storage battery in the micro-grid through the distributed power energy device, and when detecting that the real-time electric quantity of the energy storage battery in the micro-grid is higher than the preset electric quantity, suspending the charging of the energy storage battery in the micro-grid through the distributed power energy device.

[0070] In a preferred embodiment, in order to accurately budget the electric energy demand gap of the power distribution area that does not meet the electric quantity demand, the distributed energy coordinated access method of the power system, when the evaluation result is that the electric quantity demand is not met, budgets the electric energy demand gap of the power distribution area that does not meet the electric quantity demand, selects the distributed power energy device that provides electric energy sufficient to fill the budgeted electric energy demand gap, and connects the selected distributed power energy device to the micro-grid constructed for the power distribution area where the electric quantity demand is not met, in the step of filling the electric energy demand gap of the power distribution area where the electric quantity demand is not met with the electric energy provided by the selected distributed power energy device, the budgeting method of the electric energy demand gap of the power distribution area that does not meet the electric quantity demand includes the following expression:

[0071]

[0072] In the formula, S represents the budgeted electric energy demand gap of the power distribution area that does not meet the electric quantity demand, Z m represents the real-time power consumption of the mth load in the power distribution area managed by the micro-grid, ω m represents the effective utilization rate of the mth load for electric energy, ω m ≠0, m is a positive integer, 1≤m≤M, and M is the total number of loads in the power distribution area managed by the micro-grid. represents the limit as M approaches infinity, P represents the amount of power resources that the power system is about to distribute to the micro-grid.

[0073] As shown in Figure 2 An embodiment of the present application provides a distributed energy coordinated access device of a power system, which can specifically include:

[0074] A micro-grid construction module, configured to construct at least one micro-grid for each power distribution area in the power system, and manage power supply of the power distribution area through the micro-grid;

[0075] A power demand requirement evaluation module, configured to predict in real time an amount of power resources that the power system is about to distribute to the micro-grid, and evaluate whether the amount of power resources that the power system is about to distribute to the micro-grid meets power demand requirements of all loads in a power distribution area where the micro-grid is located, to obtain an evaluation result of meeting or not meeting the power demand requirements;

[0076] A power demand gap filling module, configured to, when the evaluation result is not meeting the power demand requirements, budget a power demand gap of the power distribution area that does not meet the power demand requirements, select a distributed power energy device that provides power sufficient to fill the budgeted power demand gap, and access the selected distributed power energy device to the micro-grid constructed for the power distribution area where the power demand requirements are not met, and fill the power demand gap of the power distribution area where the power demand requirements are not met by using power provided by the selected distributed power energy device;

[0077] A detection and storage module, configured to detect whether power provided by the selected distributed power energy device in real time exceeds the real-time power demand gap of the power distribution area where the power demand requirements are not met, and if so, store power provided by the selected distributed power energy device in excess of the real-time power demand gap of the power distribution area where the power demand requirements are not met to an energy storage battery in the micro-grid.

[0078] In a preferred embodiment, the distributed energy coordinated access device of the power system can specifically further include:

[0079] A power distribution area power demand gap filling module, configured to, when the real-time power demand gap of the power distribution area where the power demand requirements are not met is greater than power provided by all distributed power energy devices in the micro-grid in real time, fill the power demand gap of the power distribution area where the power demand requirements are not met in real time by using power stored in an energy storage battery in the micro-grid.

[0080] In a preferred embodiment, the distributed energy coordination access device of the power system specifically can further include:

[0081] The electric energy resource quantity real-time detection module is configured to detect whether the actual electric energy resource quantity of the power system allocated to the micro-grid exceeds the real-time predicted electric energy resource quantity of the power system to be allocated to the micro-grid, and if yes, store the actual electric energy resource quantity of the power system allocated to the micro-grid exceeding the real-time predicted electric energy resource quantity of the power system to be allocated to the micro-grid in the energy storage battery in the micro-grid, and if not, access the electric energy of the energy storage battery in the micro-grid to the micro-grid.

[0082] In a preferred embodiment, the distributed energy coordination access device of the power system specifically can further include:

[0083] The energy storage battery real-time electric quantity detection module is configured to detect the real-time electric quantity of the energy storage battery in the micro-grid, charge the energy storage battery in the micro-grid through the distributed electric power energy equipment when detecting that the real-time electric quantity of the energy storage battery in the micro-grid is lower than the preset electric quantity, and suspend charging the energy storage battery in the micro-grid through the distributed electric power energy equipment when detecting that the real-time electric quantity of the energy storage battery in the micro-grid is higher than the preset electric quantity.

[0084] It should be noted that the system embodiments described above are merely illustrative, wherein the modules described above as separate components can or can not be physically separated, and the components displayed as modules can or can not be physical modules, i.e., can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment according to actual needs. In addition, the connection relationship between the modules in the system embodiments provided in the present application indicates that there is a communication connection between them, which can be implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement it without creative labor. The above schematic diagram is only an example of the distributed energy coordination access device of the power system, and does not constitute a limitation on the distributed energy coordination access device of the power system, which can include more or fewer components than the diagram, or combine certain components, or different components.

[0085] On the basis of the above-mentioned method embodiments, the present application provides terminal embodiments.

[0086] Another embodiment of the present application provides a terminal comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the method for coordinating access of distributed energy of a power system according to any one of the embodiments of the present application when executing the computer program.

[0087] For example, in this embodiment, the computer program can be divided into one or more modules, which are stored in the memory and executed by the processor to complete the present application. The one or more modules can be a series of computer program instruction segments capable of completing a specific function, which are used to describe the execution process of the computer program in the device.

[0088] The terminal can be a desktop computer, a notebook computer, a palm computer, a cloud server, or other computing devices. The device can include, but is not limited to, a processor and a memory.

[0089] The processor can be a central processing module (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc. The processor is the control center of the device, which connects all parts of the device through various interfaces and lines.

[0090] The memory can be used to store the computer program and / or modules, and the processor realizes various functions of the device by running or executing the computer program and / or modules stored in the memory, and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application required by a function, etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0091] Based on the method embodiment, the application provides a storage medium embodiment.

[0092] Another embodiment of the application provides a storage medium, which comprises a stored computer program. When the computer program runs, the storage medium controls a device in which the storage medium is located to perform the power system distributed energy coordinated access method according to any one of the embodiments of the application.

[0093] In this embodiment, the storage medium is a computer readable storage medium, the computer program comprises computer program code, and the computer program code can be in the form of source code, object code, an executable file or some intermediate form. The computer readable medium can include any entity or device capable of carrying the computer program code, a recording medium, a U disk, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal and a software distribution medium, etc.

[0094] The above is the preferred embodiment of the application. It should be noted that, for those skilled in the art, without departing from the principle of the application, some improvements and refinements can be made, which are also considered to be within the protection scope of the application.

Claims

1. A method for coordinated access of distributed energy resources in a power system, characterized in that, The steps include the following: At least one microgrid is constructed for each distribution area in the power system, and the power supply of the distribution area is managed through the microgrid; The system predicts in real time the amount of electrical energy resources that the power system will allocate to the microgrid, and assesses whether the predicted amount of electrical energy resources to be allocated to the microgrid meets the electricity demand of all loads in the distribution area where the microgrid is located, and obtains an assessment result of whether the electricity demand is met or not. When the assessment result is that the electricity demand is not met, the power demand gap of the distribution area where the power demand is not met is estimated, a distributed power energy device that provides sufficient power to fill the estimated power demand gap is selected, and the selected distributed power energy device is connected to the microgrid constructed for the distribution area where the power demand is not met. The power provided by the selected distributed power energy device is used to fill the power demand gap of the distribution area where the power demand is not met. The system detects whether the real-time power provided by the selected distributed power energy device exceeds the real-time power demand gap of the distribution area where the power demand is not met. If so, the power provided by the selected distributed power energy device that exceeds the real-time power demand gap of the distribution area where the power demand is not met is stored in the energy storage battery in the microgrid.

2. The method for coordinated access of distributed energy resources in a power system according to claim 1, characterized in that, In the step of real-time prediction of the amount of electrical energy resources that the power system will allocate to the microgrid, and assessment of whether the real-time predicted amount of electrical energy resources to be allocated to the microgrid meets the electricity demand of all loads in the distribution area where the microgrid is located, and obtaining an assessment result of whether the electricity demand is met or not, the assessment method for whether the real-time predicted amount of electrical energy resources to be allocated to the microgrid meets the electricity demand of all loads in the distribution area where the microgrid is located includes the following expression: In the formula, E n E represents the real-time power consumption of the nth load within the distribution area of ​​the microgrid. e γ represents the predicted amount of electrical energy resources that the power system will allocate to the microgrid. n This represents the weighting factor for the electricity consumption of the nth load, where n is a positive integer, 1 ≤ n ≤ N, and N is the total number of loads within the distribution area of ​​the microgrid. This indicates the effective utilization rate of electrical energy distributed by the power system within the microgrid. ε is a constant.

3. The method for coordinated access of distributed energy resources in a power system according to claim 1, characterized in that, It also includes the following steps: When the real-time power demand gap in the distribution area where the power demand is not met is greater than the real-time power provided by all distributed power energy devices in the microgrid, the power demand gap in the distribution area where the power demand is not met is filled in real time by the power stored in the energy storage battery of the microgrid.

4. The method for coordinated access of distributed energy resources in a power system according to claim 1, characterized in that, It also includes the following steps: The system continuously monitors whether the actual amount of electrical energy allocated to the microgrid by the power system exceeds the predicted amount of electrical energy that the power system will allocate to the microgrid. If so, the excess amount is stored in the energy storage battery within the microgrid. Otherwise, the electrical energy from the energy storage battery is connected to the microgrid.

5. A method for coordinated access to distributed energy resources in a power system according to claim 1, characterized in that, It also includes the following steps: The system detects the real-time power level of the energy storage batteries in the microgrid. When the real-time power level of the energy storage batteries in the microgrid is detected to be lower than the preset power level, the system charges the energy storage batteries in the microgrid through distributed power energy devices. When the real-time power level of the energy storage batteries in the microgrid is detected to be higher than the preset power level, the system stops charging the energy storage batteries in the microgrid through distributed power energy devices.

6. A method for coordinated access to distributed energy resources in a power system according to claim 1, characterized in that, In the step of estimating the power demand gap in the distribution area where the assessment result indicates a failure to meet power demand, selecting distributed power energy devices that can provide sufficient power to fill the estimated power demand gap, and connecting the selected distributed power energy devices to the microgrid constructed for the distribution area where the power demand is not met, and using the power provided by the selected distributed power energy devices to fill the power demand gap in the distribution area where the power demand is not met, the method for estimating the power demand gap in the distribution area where the power demand is not met includes the following expression: In the formula, S represents the unmet electricity demand gap in the distribution area, as per budget, and Z represents the unmet electricity demand. m ω represents the real-time power consumption of the m-th load in the distribution area where the microgrid is managed. m ω represents the energy efficiency of the m-th load. m ≠0, m is a positive integer, 1≤m≤M, M is the total number of loads in the distribution area where the microgrid is managed, and P represents the amount of electrical energy resources that the power system will allocate to the microgrid.

7. A distributed energy coordination and access device for a power system, characterized in that, include: A microgrid construction module is used to construct at least one microgrid for each distribution area in a power system, and to manage the power supply of the distribution area through the microgrid; The electricity demand assessment module is used to predict in real time the amount of electrical energy resources that the power system will allocate to the microgrid, and to assess whether the predicted amount of electrical energy resources to be allocated to the microgrid meets the electricity demand of all loads in the distribution area where the microgrid is located, and to obtain an assessment result of whether the electricity demand is met or not. The power demand gap filling module is used to estimate the power demand gap of the distribution area where the power demand is not met when the assessment result is that the power demand is not met, select distributed power energy devices that provide sufficient power to fill the estimated power demand gap, connect the selected distributed power energy devices to the microgrid constructed for the distribution area where the power demand is not met, and use the power provided by the selected distributed power energy devices to fill the power demand gap of the distribution area where the power demand is not met; The detection and storage module is used to detect whether the real-time power provided by the selected distributed power energy device exceeds the real-time power demand gap of the distribution area where the power demand is not met. If so, the power provided by the selected distributed power energy device that exceeds the real-time power demand gap of the distribution area where the power demand is not met is stored in the energy storage battery in the microgrid.

8. A distributed energy coordination and access device for a power system according to claim 7, characterized in that, Also includes: The power demand gap filling module for the distribution area is used to fill the power demand gap in the distribution area where the unmet power demand is located in real time by using the power stored in the energy storage battery of the microgrid when the real-time power demand gap of the distribution area where the unmet power demand is located is greater than the real-time power provided by all distributed power energy devices in the microgrid.

9. A distributed energy coordination and access device for a power system according to claim 7, characterized in that, Also includes: The real-time power resource quantity detection module is used to detect in real time whether the amount of power resources actually allocated to the microgrid by the power system exceeds the amount of power resources that the power system will allocate to the microgrid in real time. If so, the detected amount of power resources actually allocated to the microgrid by the power system exceeds the amount of power resources that the power system will allocate to the microgrid in real time, and stores it in the energy storage battery in the microgrid. Otherwise, the power of the energy storage battery in the microgrid is connected to the microgrid.

10. A distributed energy coordination and access device for a power system according to claim 7, characterized in that, Also includes: The real-time power detection module for energy storage batteries is used to detect the real-time power of energy storage batteries in the microgrid. When the real-time power of energy storage batteries in the microgrid is detected to be lower than the preset power, the energy storage batteries in the microgrid are charged through distributed power energy devices. When the real-time power of energy storage batteries in the microgrid is detected to be higher than the preset power, the charging of energy storage batteries in the microgrid through distributed power energy devices is suspended.

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