New energy zero-carbon control method for multi-voltage level interconnected park and related device

Abstract

The present application belongs to the technical field of power system automation, and particularly relates to a new energy zero-carbon control method for a multi-voltage level interconnected park and a related device. The method comprises obtaining power data in the multi-voltage level interconnected park; wherein the multi-voltage level interconnected park comprises distributed energy, loads and energy storage; based on the power data, determining the total power of the distributed energy, the total power consumption of the loads and the total charging and discharging power of the energy storage in the multi-voltage level interconnected park; calculating the adjustment coefficient of the distributed energy according to the total power of the distributed energy, the total power consumption of the loads and the total charging and discharging power of the energy storage; determining the demand power according to the adjustment coefficient, and adjusting the power of the distributed energy and the energy storage based on the demand power. The present scheme avoids the complexity and unpredictable risks brought by the sectional bus consumption control.

Description

Technical Field

[0001] This invention belongs to the field of power system automation technology, specifically relating to a new energy zero-carbon control method and related devices for multi-voltage level interconnected parks. Background Technology

[0002] AC power grids have mature transmission and distribution technologies and clear control and protection mechanisms, and existing power systems typically use AC grids as the primary power transmission and distribution carrier. However, with the expansion of AC grid scale and the increase in voltage levels, the short-circuit capacity of complex interconnected AC grids is constantly increasing, making their operation and control processes increasingly complex, and exacerbating system safety and stability issues. Simultaneously, facing the large-scale integration of DC equipment such as data centers, electric vehicles, distributed power sources (e.g., photovoltaics), and DC LED lighting, the efficiency of AC grids is affected due to the numerous power conversion stages. Research results indicate that hybrid AC / DC distribution networks based on flexible DC technology are more suitable for the development of modern urban distribution networks. Hybrid AC / DC distribution networks can better accommodate distributed power sources and DC loads, alleviate the contradiction between limited urban power grid station corridors and high load density, and provide dynamic reactive power support at load centers, thereby improving system safety and stability and reducing losses. Hybrid AC / DC distribution networks represent an important development trend in distribution networks, effectively improving the power quality, reliability, and operational efficiency of urban distribution systems.

[0003] Currently, due to the immaturity of key equipment such as DC circuit breakers and DC cables, as well as the imperfection of construction standards, upgrading existing AC distribution networks with flexible DC devices is an effective way to develop AC / DC hybrid distribution networks. By deploying flexible DC devices at key nodes, and fully utilizing the backbone of the distribution network and existing AC equipment, the system's operation control and optimization capabilities can be significantly improved. However, with the integration of distributed energy sources such as photovoltaics and wind power, the limited local absorption capacity of these sources raises the low-voltage side voltage of existing transformer substations, increasing the risk of damage to user equipment due to overvoltage. Summary of the Invention

[0004] The purpose of this invention is to provide a method and related apparatus for zero-carbon control of new energy in multi-voltage level interconnected parks, so as to at least solve one of the technical problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, this invention provides a method for zero-carbon control of new energy sources in interconnected multi-voltage-level industrial parks, comprising the following steps:

[0007] Acquire power data within a multi-voltage level interconnected park; wherein the multi-voltage level interconnected park includes distributed energy, loads, and energy storage; based on the power data, determine the total power of distributed energy, the total power consumption of loads, and the total charging and discharging power of energy storage within the multi-voltage level interconnected park;

[0008] The regulation coefficient of the distributed energy source is calculated based on the total power of the distributed energy source, the total power consumption of the load, and the total charging and discharging power of the energy storage.

[0009] The required power is determined based on the adjustment coefficient, and the power of the distributed energy source and energy storage is adjusted based on the required power.

[0010] Furthermore, the multi-voltage level interconnected campus includes an interconnected first distribution substation area and a second distribution substation area, wherein:

[0011] The transformer in the first distribution area is connected to the park's AC V2G Pc2, AC photovoltaic Py1, AC wind turbine Py2, AC energy storage Pc1 and AC load Pr1 via the first AC bus, and is connected to the DC conversion line via the first AC bus and the first power electronic conversion device.

[0012] The transformer of the second distribution substation is connected to the AC load Pr4 via the second AC bus, and is connected to the DC conversion line via the second AC bus and the second power electronic converter AC / DC2.

[0013] The DC conversion lines are connected to the first DC bus and the second DC bus respectively through the third power electronic converter and the fourth power electronic converter;

[0014] The first DC bus is connected to the park DC V2G Pc3, the park DC load Pr2 and the DC photovoltaic Py3; the second DC bus is connected to the park DC load Pr3, the energy storage Pc4 and the DC photovoltaic Py4.

[0015] Furthermore, the regulation coefficient of the distributed energy source is calculated based on the total power of the distributed energy source, the total power consumption of the load, and the total charging and discharging power of the energy storage, including:

[0016] The adjustment coefficient during the day is the first adjustment coefficient, and the adjustment coefficient at night is the second adjustment coefficient;

[0017] The first regulation coefficient for distributed energy resources is calculated according to the following formula, including:

[0018]

[0019] The second regulation coefficient for distributed energy resources and energy storage is calculated according to the following formula, including:

[0020]

[0021] Where K1 represents the first regulation coefficient; K2 is the second regulation coefficient; Pci represents the i-th energy storage; Pri represents the i-th load; and Pyi represents the i-th distributed energy source.

[0022] Furthermore, the required power is determined based on the adjustment coefficient, and the power of the distributed energy source and energy storage is adjusted based on the required power, including:

[0023] During the daytime: Determine the actual output power of the distributed energy source; multiply the actual output power of the distributed energy source by the first adjustment coefficient to obtain the first demand power; determine the magnitude of the first demand power and the rated power of the distributed energy source; when the first demand power is less than the rated power of the distributed energy source, instruct the converter or rectifier of the distributed energy source to operate at the first demand power; when the first demand power is greater than or equal to the rated power of the distributed energy source, instruct the converter or rectifier of the distributed energy source to operate at the rated power.

[0024] At night: Determine the actual output power of distributed energy and energy storage respectively; multiply the actual output power of distributed energy and energy storage by the second adjustment coefficient to obtain the second demand power of distributed energy and energy storage respectively; determine the second demand power of distributed energy and energy storage respectively and compare it with the rated power of distributed energy and energy storage; when the second demand power is less than the rated power, instruct the converter or rectifier of distributed energy and energy storage to operate at the second demand power; when the second demand power is greater than or equal to the rated power, instruct the converter or rectifier of distributed energy and energy storage to operate at the rated power.

[0025] Furthermore, before acquiring power data within the multi-voltage level interconnected park, a self-test is performed on the electrical equipment within the multi-voltage level interconnected park.

[0026] Furthermore, after determining the required power based on the adjustment coefficient, the electrical power of the AC load Pr4 is used as the transferred power.

[0027] Furthermore, the power data includes:

[0028] Total power of AC photovoltaic Py1, AC wind turbine Py2, DC photovoltaic Py3, and DC photovoltaic Py4; total power of AC load Pr1, park DC load Pr2, park DC load Pr3, and AC load Pr4; total power of AC energy storage Pc1, park AC V2GPc2, park DC V2G Pc3, and park DC V2G Pc4.

[0029] In a second aspect, the present invention provides a new energy zero-carbon control device for multi-voltage level interconnected parks, comprising:

[0030] The data acquisition module is used to acquire power data within a multi-voltage level interconnected park; wherein, the multi-voltage level interconnected park includes distributed energy, loads, and energy storage; based on the power data, the total power of distributed energy, the total power consumption of loads, and the total charging and discharging power of energy storage within the multi-voltage level interconnected park are determined;

[0031] The coefficient calculation module is used to calculate the adjustment coefficient of the distributed energy based on the total power of the distributed energy, the total power consumption of the load, and the total charging and discharging power of the energy storage.

[0032] The power regulation module is used to determine the required power based on the regulation coefficient, and to regulate the power of the distributed energy source and energy storage based on the required power.

[0033] In a third aspect, the present invention provides an electronic device including a processor and a memory, the processor being configured to execute a computer program stored in the memory to implement the new energy zero-carbon control method for multi-voltage level interconnected parks as described above.

[0034] In a fourth aspect, the present invention provides a computer-readable storage medium storing at least one instruction that, when executed by a processor, implements the new energy zero-carbon control method for multi-voltage level interconnected parks as described above.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0036] The zero-carbon control method for new energy provided in this solution includes acquiring power data within a multi-voltage level interconnected park; wherein the multi-voltage level interconnected park includes distributed energy, loads, and energy storage; based on the power data, determining the total power of distributed energy, the total power consumption of loads, and the total charging and discharging power of energy storage in the multi-voltage level interconnected park; calculating the adjustment coefficient of distributed energy based on the total power of distributed energy, the total power consumption of loads, and the total charging and discharging power of energy storage; determining the required power based on the adjustment coefficient; and adjusting the power of distributed energy and energy storage based on the required power. This solution considers the operating performance of transformers in different distribution substations and AC / DC load conditions, optimizes the power generation of distributed new energy in different bus sections, avoids voltage rise on the low-voltage side of the substation due to excessive photovoltaic power, which could damage electrical equipment, reduce the actual load rate of the substation, avoid the risk of heavy overload operation in the distribution substation, promote the efficient, economical, and safe operation of the distribution substation, and avoid the complexity and unpredictable risks brought about by segmented bus absorption control. The zero-carbon control device, electronic device, and computer-readable storage medium for new energy in a multi-voltage level interconnected park provided by this invention also solve the problems raised in the background section.

[0037] The zero-carbon control method for new energy provided by this solution ensures that even if individual converters fail, the output power regulation of the entire system will not be affected because the real-time output power can be adjusted, thus reducing the risk of system failure. Attached Figure Description

[0038] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0039] Figure 1 This is a flowchart illustrating a method for zero-carbon control of new energy in a multi-voltage level interconnected park according to an embodiment of the present invention.

[0040] Figure 2 This is a schematic diagram of the grid system of a multi-busbar distribution substation interconnection park in an embodiment of the present invention;

[0041] Figure 3 This is a structural block diagram of a new energy zero-carbon control device for a multi-voltage level interconnected park, according to an embodiment of the present invention.

[0042] Figure 4 This is a structural block diagram of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0043] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0044] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0045] Example 1

[0046] This embodiment proposes a zero-carbon control method for new energy in interconnected parks with multiple voltage levels. Considering the current lack of uniformity in grid connection voltage levels for distributed new energy sources such as photovoltaics, this solution addresses the different voltage levels of the proposed grid structure to enable the access of distributed new energy sources at different voltage levels and the absorption of loads. This improves the park-level new energy absorption efficiency and power supply reliability, and reduces the risk of power distribution failures.

[0047] like Figure 1 As shown, a method for zero-carbon control of new energy in a multi-voltage level interconnected industrial park includes the following steps:

[0048] S1. Obtain power data within the multi-voltage level interconnected park; wherein the multi-voltage level interconnected park includes distributed energy, loads, and energy storage; based on the power data, determine the total power of distributed energy, the total power consumption of loads, and the total charging and discharging power of energy storage within the multi-voltage level interconnected park.

[0049] A typical multi-voltage level interconnected park involved in this plan includes two AC / DC converter ports, a DC 750V port and a DC ±375V port, and four different power supply bus sections to form a flexible AC / DC hybrid network system. The four bus sections are respectively connected to distributed energy sources and loads such as distributed photovoltaic, wind power generation, energy storage, V2G charging piles, loads and park lighting loads.

[0050] Specifically, such as Figure 2 As shown, the multi-voltage level interconnected park includes an interconnected first distribution substation and a second distribution substation. The transformer in the first distribution substation is connected to the park's AC V2G Pc2, AC photovoltaic Py1, AC wind turbine Py2, AC energy storage Pc1, and AC load Pr1 via a first AC bus, and is also connected to a DC conversion line via the first AC bus and a first power electronic converter. The transformer in the second distribution substation is connected to the AC load Pr4 via a second AC bus, and is also connected to a DC conversion line via the second AC bus and a second power electronic converter. The DC conversion line is connected to the first DC bus and the second DC bus via a third power electronic converter and a fourth power electronic converter, respectively. The first DC bus connects to the park's DC V2G Pc3, park's DC load Pr2, and DC photovoltaic Py3. The second DC bus connects to the park's DC load Pr3, energy storage Pc4, and DC photovoltaic Py4.

[0051] The interaction power between the first distribution substation and the power grid is P1, and the interaction power between the second distribution substation and the power grid is P2. The purpose of this scheme is that both P1 and P2 are 0, that is, to realize the full absorption of new energy distributed power sources without generating carbon emissions.

[0052] In the above scheme, the energy storage maintains a regular start and stop. For energy storage, its charging power is + and its discharging power is -.

[0053] To achieve the above solution, power distribution data and electrical quantity data of each busbar section in the park are collected to obtain the power data required in this solution. The power data to be obtained in this embodiment includes:

[0054] Total power of AC photovoltaic Py1, AC wind turbine Py2, DC photovoltaic Py3, and DC photovoltaic Py4; total power of AC load Pr1, park DC load Pr2, park DC load Pr3, and AC load Pr4; total power of AC energy storage Pc1, park AC V2GPc2, park DC V2G Pc3, and park DC V2G Pc4.

[0055] Based on the data obtained above, the total distributed energy power Py, the total power consumption Pr, and the total charging and discharging power (charging+, discharging-) Pc of the four busbars are calculated.

[0056]

[0057]

[0058]

[0059] Where Pci represents the i-th energy storage, Pri represents the i-th load, and Pyi represents the i-th distributed energy source.

[0060] Specifically, the data involved in the above calculations include: the power of AC photovoltaic Py1, AC wind turbine Py2, DC 750V bus section DC photovoltaic Py3, and DC ±375V bus section DC photovoltaic Py4; the power of AC load Pr1, DC 750V bus section park DC load Pr2, DC ±375V bus section park DC load Pr3, and AC load Pr4; and the power (charging +, discharging -) of AC energy storage Pc1, park AC V2G Pc2, DC 750V bus section park DC V2G Pc3, and DC ±375V bus section park DC V2G Pc4.

[0061] Preferably, before the step of acquiring power data within the multi-voltage level interconnected park, a self-test is performed on the electrical equipment within the multi-voltage level interconnected park.

[0062] Specifically, as an AC / DC hybrid system, the multi-voltage interconnected park performs a self-check before data collection. It checks all major inverters and converter modules for any non-powered states, reviews all fault signals from major equipment, identifies the main components with fault alarms, and analyzes the system's operation to provide corresponding prompts. The converters at the 750V and ±375V bus voltage levels are maintained in automatic switching mode, ensuring that grid connection is used when photovoltaic power from these two bus sections is sufficient, and that mains power is used to supplement grid power when photovoltaic power is insufficient.

[0063] It should be noted that the multi-voltage level interconnected parks involved in this plan, considering the efficient conversion of power electronic conversion devices, Ploss,i Approximately equal to zero; considering that the distance between interconnected distribution substations is not large, ΔP is approximately equal to zero and can be not involved in actual calculations. ΔP is the loss of the interconnected line of the distribution substation, and P loss,i is the conversion loss of the power conversion device.

[0064] S2. Calculate the regulation coefficient of the distributed energy according to the total power of the distributed energy, the total power consumption of the load, and the total charge-discharge electric power of the energy storage.

[0065] Specifically, in this solution, two cases of day and night are considered. The regulation coefficient during the day is the first regulation coefficient, and the regulation coefficient at night is the second regulation coefficient.

[0066] (1) During the day, both the wind turbine and the photovoltaic power generation are normal, that is, the powers of the AC photovoltaic Py1, the AC wind turbine Py2, the DC photovoltaic Py3, and the DC photovoltaic Py4 are all greater than 0.

[0067] If Py total < Pr total at this time, it may be that the weather affects the photovoltaic power generation and is not sufficient to support the current park power. At present, no regulation is performed, and the first regulation coefficient K1 is calculated first.

[0068] Specifically, the first regulation coefficient of the distributed energy is calculated according to the following formula, including:

[0069]

[0070] where K1 represents the first regulation coefficient, which is the regulation coefficient during the day, Pci represents the i-th energy storage, Pri represents the i-th load, and Pyi represents the i-th distributed energy.

[0071] (2) At night, the photovoltaic Py = 0 and the wind turbine Py > 0; that is, the powers of the AC photovoltaic Py1, the DC photovoltaic Py3, and the DC photovoltaic Py4 are 0, and the power of the AC wind turbine Py2 is greater than 0. The power direction of the energy storage is specified: the discharge power is -, and the charge power is +. The characteristic of using the energy storage as a power source is used to supplement the energy of the load.

[0072] First, judge whether the energy storage power Qc is > 0. If the energy storage power Qc is greater than 0, set the energy storage to the grid-connected discharge mode at a fixed time (the fixed time can be adjusted according to the typical value of the light sensor).

[0073] Then, obtain the current operation data of the park: since the photovoltaic power is all 0, only obtain the power of the AC wind turbine Py2, the total power of the AC load Pr1, the park DC load Pr2, the park DC load Pr3, and the AC load Pr4, and the total power of the AC energy storage Pc1, the park AC V2G Pc2, the park DC V2G Pc3, and the park DC V2G Pc4;

[0074] Next, based on the power of the AC fan Py2, the total power consumption of the load, and the total power discharge of the energy storage, the second regulation coefficient K2 of the distributed energy source is calculated, including:

[0075]

[0076] Wherein, the second adjustment coefficient K2 is the adjustment coefficient at night; since the photovoltaic power is 0 at night, then It is actually equal to the power of the AC fan Py2.

[0077] S3. Determine the required power based on the adjustment coefficient, and adjust the power of the distributed energy source and energy storage based on the required power.

[0078] Specifically, the required power is determined based on the adjustment coefficient, and the power of the distributed energy source and energy storage is adjusted based on the required power, including:

[0079] During the daytime: Determine the actual output power of the distributed energy source; multiply the actual output power of the distributed energy source by the first adjustment coefficient to obtain the first demand power; determine the magnitude of the first demand power and the rated power of the distributed energy source; when the first demand power is less than the rated power of the distributed energy source, instruct the converter or rectifier of the distributed energy source to execute the first demand power; when the first demand power is greater than or equal to the rated power of the distributed energy source, instruct the converter or rectifier of the distributed energy source to execute the rated power.

[0080] At night: Determine the actual output power of the distributed energy source and energy storage; multiply the actual output power of the distributed energy source and energy storage by the adjustment coefficient to obtain the second demand power of the distributed energy source and energy storage; determine the second demand power of the distributed energy source and energy storage and compare it with their rated power; when the second demand power is less than the rated power, instruct the converter or rectifier of the distributed energy source and energy storage to operate at the second demand power; when the second demand power is greater than or equal to the rated power, instruct the converter or rectifier of the distributed energy source and energy storage to operate at the rated power.

[0081] In one embodiment, taking daytime operation as an example, the inverter power commands for distributed power sources such as photovoltaic and wind turbines are set to Psg and Psy, respectively. Then, Psg = K1 * Pyg; Psy = K1 * Pyf; where Pyg and Pyf are the actual power of the photovoltaic and wind power inverters or converters, respectively. The output power of the distributed new energy converters is uniformly set according to the scaling factor K. When K >= 1, it is necessary to determine whether the power command is greater than the rated power of the converter. If it is greater, the power command is set to be equal to the rated power. After setting, the power consumption Pr4 of the AC load in the second distribution substation is calculated. If Pr4 <= Peb (the rated power of the second power electronic converter), the transfer power is set to Pr4.

[0082] In the preferred embodiment, after determining the required power based on the adjustment coefficient, the electrical power of the AC load Pr4 is used as the transferred power.

[0083] The above steps S1 to S3 are polled and judged by the logic execution system or central processing unit every 5 minutes or 30 minutes to realize the distributed power source of the park follows the load and the local consumption of distributed energy of each section of the bus in the park, so as to achieve a truly zero-carbon park.

[0084] In the preferred scheme, for industrial parks with more transformer substations, electricity consumption data for each substation is collected separately. Substations with low load rates are configured with AC / DC converters in voltage source mode to maintain the DC bus voltage, while the remaining substations are configured with AC / DC converters in current source mode. When the photovoltaic power on the bus of a substation is insufficient to support the existing bus power, the electricity consumption and generation of each substation's bus are calculated. The power required by the bus is transferred through the power source, maximizing the utilization of each photovoltaic unit. This achieves load-driven power generation in the new power system, enabling local consumption of new energy and realizing a zero-carbon industrial park.

[0085] Example 2

[0086] like Figure 3 As shown, based on the same inventive concept as the above embodiments, the present invention also provides a new energy zero-carbon control device for multi-voltage level interconnected parks, comprising:

[0087] The data acquisition module is used to acquire power data within a multi-voltage level interconnected park; wherein, the multi-voltage level interconnected park includes distributed energy, loads, and energy storage; based on the power data, the total power of distributed energy, the total power consumption of loads, and the total charging and discharging power of energy storage within the multi-voltage level interconnected park are determined;

[0088] The coefficient calculation module is used to calculate the adjustment coefficient of the distributed energy based on the total power of the distributed energy, the total power consumption of the load, and the total charging and discharging power of the energy storage.

[0089] The power regulation module is used to determine the required power based on the regulation coefficient, and to regulate the power of the distributed energy source and energy storage based on the required power.

[0090] Example 3

[0091] like Figure 4 As shown, the present invention also provides an electronic device 100 for implementing a new energy zero-carbon control method for a multi-voltage level interconnected park as described in the above embodiments;

[0092] The electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on at least one processor 102, and at least one communication bus 104.

[0093] The memory 101 can be used to store computer program 103. The processor 102 implements the steps of the new energy zero-carbon control method of a multi-voltage level interconnected park in Embodiment 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101.

[0094] The memory 101 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created based on the use of the electronic device 100 (such as audio data), etc. In addition, the memory 101 may include non-volatile memory, such as hard disk, RAM, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0095] At least one processor 102 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 102 may be a microprocessor or any conventional processor. Processor 102 is the control center of electronic device 100, connecting various parts of electronic device 100 via various interfaces and lines.

[0096] The memory 101 in the electronic device 100 stores multiple instructions to implement a new energy zero-carbon control method for a multi-voltage level interconnected park, and the processor 102 can execute multiple instructions to achieve the following:

[0097] Acquire power data within a multi-voltage level interconnected park; wherein the multi-voltage level interconnected park includes distributed energy, loads, and energy storage; based on the power data, determine the total power of distributed energy, the total power consumption of loads, and the total charging and discharging power of energy storage within the multi-voltage level interconnected park;

[0098] The regulation coefficient of the distributed energy source is calculated based on the total power of the distributed energy source, the total power consumption of the load, and the total charging and discharging power of the energy storage.

[0099] The required power is determined based on the adjustment coefficient, and the power of the distributed energy source and energy storage is adjusted based on the required power.

[0100] Example 4

[0101] If the modules / units integrated in the electronic device 100 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, and read-only memory (ROM).

[0102] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0103] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0104] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0105] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0106] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for zero-carbon control of new energy in multi-voltage level interconnected parks, characterized in that, Includes the following steps: Acquire power data within a multi-voltage level interconnected park; wherein the multi-voltage level interconnected park includes distributed energy, loads, and energy storage; based on the power data, determine the total power of distributed energy, the total power consumption of loads, and the total charging and discharging power of energy storage within the multi-voltage level interconnected park; The regulation coefficient of the distributed energy source is calculated based on the total power of the distributed energy source, the total power consumption of the load, and the total charging and discharging power of the energy storage. The required power is determined based on the adjustment coefficient, and the power of the distributed energy source and energy storage is adjusted based on the required power. The regulation coefficient of the distributed energy source is calculated based on the total power of the distributed energy source, the total power consumption of the load, and the total charging and discharging power of the energy storage, including: The adjustment coefficient during the day is the first adjustment coefficient, and the adjustment coefficient at night is the second adjustment coefficient; The first regulation coefficient for distributed energy resources is calculated according to the following formula, including: The second regulation coefficient for distributed energy resources and energy storage is calculated according to the following formula, including: Where K1 represents the first regulation coefficient; K2 is the second regulation coefficient; Pci represents the i-th energy storage; Pri represents the i-th load; and Pyi represents the i-th distributed energy source.

2. The method for zero-carbon control of new energy in multi-voltage level interconnected parks according to claim 1, characterized in that, The multi-voltage level interconnected campus includes an interconnected first distribution substation area and a second distribution substation area, wherein: The transformer in the first distribution area is connected to the park's AC V2G Pc2, AC photovoltaic Py1, AC wind turbine Py2, AC energy storage Pc1 and AC load Pr1 via the first AC bus, and is connected to the DC conversion line via the first AC bus and the first power electronic conversion device. The transformer of the second distribution substation is connected to the AC load Pr4 via the second AC bus, and is connected to the DC conversion line via the second AC bus and the second power electronic converter AC / DC2. The DC conversion lines are connected to the first DC bus and the second DC bus respectively through the third power electronic converter and the fourth power electronic converter; The first DC bus is connected to the park DC V2G Pc3, the park DC load Pr2 and the DC photovoltaic Py3; the second DC bus is connected to the park DC load Pr3, the energy storage Pc4 and the DC photovoltaic Py4.

3. The method for zero-carbon control of new energy in multi-voltage level interconnected parks according to claim 2, characterized in that, The required power is determined based on the adjustment coefficient, and the power of the distributed energy source and energy storage is adjusted based on the required power, including: During the daytime: Determine the actual output power of the distributed energy source; multiply the actual output power of the distributed energy source by the first adjustment coefficient to obtain the first demand power; determine the magnitude of the first demand power and the rated power of the distributed energy source; when the first demand power is less than the rated power of the distributed energy source, instruct the converter or rectifier of the distributed energy source to operate at the first demand power; when the first demand power is greater than or equal to the rated power of the distributed energy source, instruct the converter or rectifier of the distributed energy source to operate at the rated power. At night: Determine the actual output power of distributed energy and energy storage respectively; multiply the actual output power of distributed energy and energy storage by the second adjustment coefficient to obtain the second demand power of distributed energy and energy storage respectively; determine the second demand power of distributed energy and energy storage respectively and compare it with the rated power of distributed energy and energy storage; when the second demand power is less than the rated power, instruct the converter or rectifier of distributed energy and energy storage to operate at the second demand power; when the second demand power is greater than or equal to the rated power, instruct the converter or rectifier of distributed energy and energy storage to operate at the rated power.

4. The method for zero-carbon control of new energy in multi-voltage level interconnected parks according to claim 1, characterized in that, Before acquiring power data within a multi-voltage level interconnected park, a self-test is performed on the electrical equipment within the multi-voltage level interconnected park.

5. The method for zero-carbon control of new energy in multi-voltage level interconnected parks according to claim 2, characterized in that, After determining the required power based on the adjustment coefficient, the electrical power of the AC load Pr4 is used as the transferred power.

6. The method for zero-carbon control of new energy in multi-voltage level interconnected parks according to claim 2, characterized in that, The power data includes: Total power of AC photovoltaic Py1, AC wind turbine Py2, DC photovoltaic Py3, and DC photovoltaic Py4; total power of AC load Pr1, park DC load Pr2, park DC load Pr3, and AC load Pr4; total power of AC energy storage Pc1, park AC V2G Pc2, park DC V2G Pc3, and park DC V2G Pc4.

7. A new energy zero-carbon control device for a multi-voltage level interconnected park, used to implement the new energy zero-carbon control method for a multi-voltage level interconnected park as described in claim 1, characterized in that, include: The data acquisition module is used to acquire power data within a multi-voltage level interconnected park; wherein, the multi-voltage level interconnected park includes distributed energy, loads, and energy storage; based on the power data, the total power of distributed energy, the total power consumption of loads, and the total charging and discharging power of energy storage within the multi-voltage level interconnected park are determined; The coefficient calculation module is used to calculate the adjustment coefficient of the distributed energy based on the total power of the distributed energy, the total power consumption of the load, and the total charging and discharging power of the energy storage. The power regulation module is used to determine the required power based on the regulation coefficient, and to regulate the power of the distributed energy source and energy storage based on the required power.

8. An electronic device, characterized in that, It includes a processor and a memory, the processor being used to execute a computer program stored in the memory to implement the new energy zero-carbon control method for multi-voltage level interconnected parks as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one instruction, which, when executed by a processor, implements the new energy zero-carbon control method for multi-voltage level interconnected parks as described in any one of claims 1 to 6.

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