Energy consumption configuration method and device for new energy through power electronic transmission system

By optimizing the energy consumption configuration method of the new energy power electronic transmission system, and based on the grid demand and the characteristics of new energy, the problem of excessive energy consumption configuration was solved, and economic benefits were improved.

CN119070323BActive Publication Date: 2026-03-24NR ELECTRIC CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-31
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

New energy power electronic transmission systems have large energy consumption configurations, resulting in problems such as large footprint and high cost.

Method used

Based on the emergency power regulation time of the power electronic transmission system and the maximum time requirement for grid fault ride-through, and combined with the fault ride-through characteristics and energy consumption characteristics of new energy sources, the energy consumption configuration time and method are determined.

Benefits of technology

This reduces the energy consumption of new energy power electronic transmission systems and improves economic efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a new energy power electronic transmission system energy consumption configuration method and device, electronic equipment and a non-transient computer readable storage medium. The energy consumption configuration method comprises the following steps: determining a first time according to an emergency power regulation time and a maximum grid fault ride-through time of an access grid system of the power electronic transmission system; determining a second time according to a fault ride-through characteristic and a configuration energy consumption characteristic of the new energy; comparing the first time with the second time; and configuring the energy consumption according to a comparison result and a rated power of the power electronic transmission system. According to the embodiment of the application, the energy consumption configuration of the new energy power electronic transmission system is reduced, and the economic benefit is improved.
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Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy power transmission, in particular, to a new energy power electronic transmission system energy consumption configuration method and device, electronic equipment and non-transitory computer readable storage medium. BACKGROUND

[0002] Countries around the world are accelerating energy transformation, especially through the vigorous development of new energy technology to break the dilemma of economic development and climate warming. New energy mainly includes wind power, photovoltaic and supporting energy storage or reactive power compensation devices, etc.

[0003] China's new energy is mainly concentrated in the desert or offshore. The desert and offshore are at the end of the power grid, and the desert and offshore new energy shows a trend of large-scale development and centralized transmission, such as through flexible DC transmission and through low-frequency power transmission. Due to the inertia of wind turbines in new energy, when the power receiving end of the new energy power electronic transmission system fails, the power cannot be transmitted, which may cause power accumulation and overvoltage tripping, affecting the safe operation of the equipment and the reliable operation of the project.

[0004] The inventors of the present application found that the current engineering adopts an energy consumption device with the same capacity as the power of the new energy power electronic transmission system. The energy consumption time is directly determined according to the emergency power regulation time of the power electronic transmission system connected to the power grid and the maximum time requirement for grid fault ride-through, resulting in large energy consumption. When the new energy already has ride-through or sufficient energy consumption, the power electronics repeatedly configures energy consumption, resulting in large occupation, high cost and other problems. SUMMARY

[0005] The present application proposes a new energy power electronic transmission system energy consumption configuration method and device, electronic equipment and non-transitory computer readable storage medium to solve the problem of large energy consumption configuration in the new energy power electronic transmission system.

[0006] According to an aspect of the present application, a new energy power electronic transmission system energy consumption configuration method is provided, which includes: determining a first time according to the emergency power regulation time of the power electronic transmission system connected to the power grid system and the maximum time requirement for grid fault ride-through; determining a second time according to the fault ride-through characteristics and the configuration energy consumption characteristics of the new energy; comparing the first time with the second time; and configuring the energy consumption according to the comparison result and the rated power of the power electronic transmission system.

[0007] According to some embodiments, configuring the energy consumption according to the comparison result and the difference between the first time and the second time includes: in the case that the first time is greater than the second time, configuring the energy consumption according to the rated power of the power electronic transmission system multiplied by the difference between the first time and the second time.

[0008] According to some embodiments, the new energy source includes photovoltaic, wind power, photovoltaic-wind power combination, photovoltaic energy storage combination, wind power energy storage combination, or wind power-photovoltaic-energy storage combination system.

[0009] According to some embodiments, the power electronic transmission system includes one or more of the following: flexible DC transmission system, low-frequency transmission system, and DC transformer transmission system.

[0010] According to some embodiments, the first time is the greater of the emergency power regulation time of the power electronic transmission system's access to the power grid system and the maximum time of grid fault ride-through demand, as shown in the following formula:

[0011] T1 = max{T3|T4}

[0012] Wherein, T1 is the first time, T3 is the third time, which is the maximum demand time for emergency power regulation of the grid-connected system, and T4 is the fourth time, which is the maximum fault ride-through demand time of the grid-connected system. The maximum demand time for emergency power regulation and the maximum fault ride-through demand time are both determined by the demand of the grid-connected system.

[0013] According to some embodiments, determining the second time based on the fault ride-through characteristics and configuration energy consumption characteristics of the new energy source includes: configuring the power generation of the photovoltaic and energy storage in the new energy source as the first power generation, wherein the fault ride-through characteristics of the photovoltaic and energy storage are such that the active current can be quickly adjusted and output without configuring energy consumption during the ride-through; configuring the power generation of the wind power in the new energy source as the second power generation, and configuring the wind turbine's energy consumption tolerance time at full power as the fifth time, wherein the fifth time is determined by the wind turbine's configuration energy consumption, and the fault ride-through characteristics of the wind power are the current characteristics output by the wind turbine during the fault period after configuring energy consumption for the wind turbine according to the grid or wind farm access standards.

[0014] According to some embodiments, the energy consumption configuration method as described in claim 6 is characterized in that, determining the second time based on the fault ride-through characteristics and configuration energy consumption characteristics of the new energy source further includes: calculating the second time based on the first power generation, the first time, the second power generation, the fifth time, and the rated power of the power electronic transmission system, as shown in the following formula:

[0015] T2 = (P1 * T1 + P2 * T5) / Ps

[0016] Wherein, P1 is the first power generation, T1 is the first time, P2 is the second power generation, T5 is the fifth time, and Ps is the rated power of the power electronic transmission system.

[0017] According to some embodiments, when the first time is greater than the second time, configuring the energy consumption according to the difference between the rated power of the power electronic transmission system and the first time minus the second time includes determining the energy consumption according to the following formula:

[0018] E chmin =Ps*(T1-T2)

[0019] Where: T1 is the first time, T2 is the second time, Ps is the rated power of the power electronic transmission system, and E chmin This is the minimum energy value required for energy consumption.

[0020] According to some embodiments, the energy consumption configuration method further includes: when the first time is greater than the second time, determining the minimum energy consumption power based on the minimum energy value of the energy consumption.

[0021] According to some embodiments, when the first time is greater than the second time, determining the minimum power consumption based on the minimum energy consumption value includes:

[0022] The minimum power consumption is determined according to the following formula:

[0023] P chmin =E chmin / T1

[0024] Among them, P chmin E represents the minimum power consumption. chmin T1 is the minimum energy value consumed, and T1 is the first time.

[0025] According to some embodiments, the energy consumption is AC energy consumption configured on the AC side, or the energy consumption is DC energy consumption configured on the DC side.

[0026] According to some embodiments, the energy consumption configuration method further includes: not configuring the energy consumption when the first time is not greater than the second time.

[0027] According to one aspect of this application, a power consumption configuration device for a new energy source via a power electronic transmission system is proposed. The power consumption configuration device includes: a first time determination unit, configured to determine a first time based on the emergency power adjustment time of the power electronic transmission system's connection to the power grid and the maximum fault ride-through time requirement of the power grid; a second time determination unit, configured to determine a second time based on the fault ride-through characteristics and configuration power consumption characteristics of the new energy source; a comparison unit, configured to compare the first time with the second time; and a power consumption configuration unit, configured to configure the power consumption based on the comparison result and the rated power of the power electronic transmission system.

[0028] According to one aspect of this application, an electronic device is provided, comprising: a processing unit; and

[0029] The storage unit stores a computer program that, when executed by the processing unit, causes the processing unit to perform the energy consumption configuration method as described in any of the preceding embodiments.

[0030] According to one aspect of this application, a non-transitory computer-readable storage medium is provided, on which computer-readable instructions are stored, which, when executed by a processor, cause the processor to perform the power-consuming configuration method as described in any of the preceding embodiments.

[0031] According to the embodiments of this application, the energy consumption configuration of the new energy power electronic transmission system is reduced, thereby improving economic efficiency.

[0032] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The above and other objectives, features, and advantages of this application will become more apparent by referring to the accompanying drawings and describing exemplary embodiments in detail.

[0034] Figure 1 This diagram illustrates a power electronic transmission system for a new energy source according to an example embodiment of this application.

[0035] Figure 2 This diagram illustrates a system schematic of a new energy source transmitted via a flexible DC transmission system according to an example embodiment of this application.

[0036] Figure 3 A schematic diagram of a new energy transmission system via low-frequency / frequency division, according to an exemplary embodiment of this application, is shown.

[0037] Figure 4 A flowchart illustrating a method for configuring energy consumption of a new energy source via a power electronic transmission system, according to an example embodiment of this application, is shown.

[0038] Figure 5 A block diagram of a power electronic transmission system for a new energy source is shown according to an example embodiment of this application.

[0039] Figure 6 An electronic device is shown according to an exemplary embodiment of this application. Detailed Implementation

[0040] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same drawings in the figures show the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0041] The user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0042] The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of these specific details, or other methods, components, materials, apparatus, or operations may be employed. In these cases, well-known structures, methods, apparatuses, implementations, materials, or operations will not be shown or described in detail.

[0043] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0044] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0045] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0046] Figure 1 This diagram illustrates a power electronic transmission system for a new energy source according to an example embodiment of this application.

[0047] like Figure 1 As shown, the new energy transmission system includes an external new energy system 101, a power electronic transmission system 201, and a grid connection system 301. The new energy system 101 can be a photovoltaic (PV) system, a wind power system, a PV-wind power combination system, a PV-energy storage system, a wind power-energy storage system, or a wind power-PV-energy storage system. The power electronic transmission system 201 includes a transmission system and energy-consuming devices. The transmission system includes one or more of a flexible DC transmission system, a low-frequency transmission system, and a DC transformer transmission system. The power electronic transmission system receives AC or DC power from the new energy system 101, transmits it through the power electronic transmission system, and then delivers it to the grid connection system 301.

[0048] Figure 2 This diagram illustrates a system schematic of a new energy source transmitted via a flexible DC transmission system according to an example embodiment of this application.

[0049] like Figure 2 As shown, the new energy system 101 is connected to the flexible DC transmission system 201 via the sending end 2011, converted to DC and sent to the receiving end 2012. The receiving end 2012 then converts it to AC and connects it to the power grid system 301. The flexible DC transmission system 201 determines a first time based on the emergency power regulation time of the power electronic transmission system's connection to the power grid system 301 and the maximum fault ride-through time requirement. It then determines a second time based on the fault ride-through characteristics and energy consumption characteristics of the new energy system 101, and compares the first and second times. According to an embodiment of this application, when the first time is greater than the second time, the minimum energy value of the energy consumption 2013 is determined by multiplying the rated power of the electronic transmission system by the difference between the first time and the second time. According to other embodiments of this application, when the first time is not greater than the second time, no energy consumption is configured.

[0050] Figure 3 A schematic diagram of a low-frequency / frequency division transmission system for new energy sources, as illustrated in an exemplary embodiment of this application, is shown below. Figure 3 As shown, the new energy transmission system via low-frequency power transmission includes a new energy system 101, a low-frequency / division frequency transmission system 201, and a grid connection system 301. The low-frequency transmission system 201 includes a low-frequency transmission converter 2014 and an energy-consuming unit 2013. The low-frequency transmission converter 2014 receives the low-frequency AC power input from the new energy system 101, converts it into power frequency AC power, and then sends it to the grid connection system 301.

[0051] The low-frequency transmission system 201 determines a first time based on the emergency power regulation time of the power electronic transmission system connected to the grid and the maximum fault ride-through time requirement of the grid. It then determines a second time based on the fault ride-through characteristics and energy consumption characteristics of the new energy system 101, and compares the first and second times. According to embodiments of this application, when the first time is greater than the second time, the minimum energy value of energy consumption 2013 is determined by multiplying the rated power of the electronic transmission system by the difference between the first and second times. According to other embodiments of this application, when the first time is not greater than the second time, no energy consumption is configured.

[0052] Figure 4 This diagram illustrates a method for configuring energy consumption of a new energy source via a power electronic transmission system according to an example embodiment of this application. According to the embodiment of this application, the new energy source includes photovoltaic (PV), wind power, a PV-wind power combination, a PV-energy storage combination, a wind power-energy storage combination, or a wind power-PV-energy storage combination system. The power electronic transmission system includes one or more of the following: a flexible DC transmission system, a low-frequency transmission system, and a DC transformer transmission system.

[0053] like Figure 4 As shown, in step S401, the first time is determined based on the emergency power regulation time of the power electronic transmission system connected to the power grid system and the maximum time requirement for grid fault crossover.

[0054] In a specific embodiment, the first time is the larger of the emergency power regulation time of the power electronic transmission system accessing the grid system and the maximum time of grid fault ride-through demand, as shown in formula (1).

[0055] T1 = max{T3|T4} (1)

[0056] Wherein, T1 is the first time, T3 is the third time, which is the maximum emergency power regulation demand time of the grid connection system 301, and T4 is the fourth time, which is the maximum fault ride-through demand time of the grid connection system 301. Both the maximum emergency power regulation demand time and the maximum fault ride-through demand time are determined by the needs of the grid connection system 301, for example, based on the wind farm's requirement for emergency power regulation capability. In specific implementations, the emergency power regulation sudden drop time needs to be between 1 and 2 seconds. In other embodiments, the wind farm is required to have a low-voltage ride-through tolerance time of 625 milliseconds or 1.5 seconds.

[0057] In step S403, the second time is determined based on the fault ride-through characteristics and configuration energy consumption characteristics of the new energy source.

[0058] In a specific embodiment, when the new energy source is a combination of photovoltaic and wind power, the power generation of the photovoltaic and energy storage in the new energy source is configured as the first power generation, and the fault ride-through characteristic of the photovoltaic and energy storage is that the active current can be quickly adjusted and output without configuring energy consumption during the ride-through; the power generation of the wind power in the new energy source is configured as the second power generation, and the wind turbine energy consumption tolerance time at full power is configured as the fifth time, which is determined by the wind turbine energy consumption configuration, and the fault ride-through characteristic of the wind power is the current characteristic output by the wind turbine during the fault period after configuring energy consumption for the wind turbine according to the grid or wind farm access standard. Taking Part 1 of the National Standard GB / T 19963.1-2021 Technical Specifications for Wind Farm Access to Power System - Onshore Wind Power as an example, the fault ride-through characteristic of the wind turbine has a clear reactive current Iq requirement, and its active current Id can be calculated from the converter total current limit Imax and the reactive current, as shown in formula (2).

[0059]

[0060] In another embodiment, when the new energy source is photovoltaic, the second power generation is configured to zero. The power generation of the photovoltaic-storage system within the new energy source is configured as the first power generation, and the fault ride-through characteristic of the photovoltaic-storage system is such that it can achieve rapid adjustment and output of active current without configuring energy consumption during fault ride-through.

[0061] According to an embodiment of this application, the second time is calculated based on the first power generation, the first time, the second power generation, the fifth time, and the rated power of the power electronic transmission system, as shown in formula (3).

[0062] T2=(P1*T1+P2*T5) / Ps (3)

[0063] Wherein, P1 is the first power generation, T1 is the first time, P2 is the second power generation, T5 is the fifth time, and Ps is the rated power of the power electronic transmission system.

[0064] In step S405, the first time is compared with the second time.

[0065] In step S407, the energy consumption is configured based on the comparison results and the rated power of the power electronic transmission system.

[0066] When the first time is greater than the second time, the energy consumption is configured according to the difference between the rated power of the power electronic transmission system and the first time minus the second time, as shown in formula (4).

[0067] E chmin =Ps*(T1-T2) (4)

[0068] Where: T1 is the first time, T2 is the second time, Ps is the rated power of the power electronic transmission system, and E chmin This is the minimum energy value required for energy consumption.

[0069] According to the embodiments of this application, Figure 4 The energy consumption configuration method shown also includes determining the minimum energy consumption power based on the minimum energy value of the energy consumption, as shown in formula (5).

[0070] P chmin =E chmin / T1 (5)

[0071] Among them, P chmin E represents the minimum power consumption. chmin T1 is the minimum energy value consumed, and T1 is the first time.

[0072] It should be noted here that... Figure 4 The energy consumption includes AC energy consumption configured on the AC side or DC energy consumption configured on the DC side.

[0073] According to some other embodiments of this application, the energy consumption is not configured when the first time is not greater than the second time.

[0074] according to Figure 4 The illustrated embodiment improves economic efficiency by optimizing the fault ride-through characteristics of new energy sources and the entire system of power electronic control, thereby reducing or eliminating the energy consumption configuration required by the power electronic transmission system.

[0075] The above description primarily focuses on the methodological aspects of the embodiments of this application. Those skilled in the art should readily recognize that, based on the operations or steps described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Those skilled in the art can implement the described functionality in different ways for each specific operation or method, and such implementations should not be considered beyond the scope of this application.

[0076] The apparatus embodiments of this application are described below. For details not described in the apparatus embodiments of this application, please refer to the method embodiments of this application.

[0077] Figure 5 A block diagram of a power electronic transmission system for a new energy source is shown according to an example embodiment of this application. Figure 5The energy consumption configuration device shown includes a first time determination unit 501, a second time determination unit 503, a comparison unit 505, and an energy consumption configuration unit 507. Specifically, the first time determination unit 501 determines a first time based on the emergency power adjustment time of the power electronic transmission system's connection to the power grid and the maximum fault ride-through time requirement of the power grid; the second time determination unit 503 determines a second time based on the fault ride-through characteristics and energy consumption configuration characteristics of the new energy source; the comparison unit 505 compares the first time with the second time; and the energy consumption configuration unit 507 configures the energy consumption based on the comparison result and the rated power of the power electronic transmission system.

[0078] Figure 6 An electronic device according to an exemplary embodiment of this application is shown. Reference is made below. Figure 6 To describe an electronic device 200 according to this embodiment of the present application. Figure 6 The electronic device 200 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0079] like Figure 6 As shown, the electronic device 200 is presented in the form of a general-purpose computing device. The components of the electronic device 200 may include, but are not limited to: at least one processing unit 210, at least one storage unit 220, a bus 230 connecting different system components (including storage unit 220 and processing unit 210), a display unit 240, etc.

[0080] The storage unit stores program code, which can be executed by the processing unit 210 to perform the methods described in this specification according to various exemplary embodiments of this application. For example, the processing unit 210 can perform, for example... Figure 1 The method shown.

[0081] Storage unit 220 may include readable media in the form of volatile storage units, such as random access memory (RAM) 2201 and / or cache memory 2202, and may further include read-only memory (ROM) 2203.

[0082] Storage unit 220 may also include a program / utility 2204 having a set (at least one) program module 2205, such program module 2205 including but not limited to: operating system, one or more application programs, other program modules and program data, each or some combination of these examples may include an implementation of a network environment.

[0083] Bus 230 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0084] Electronic device 200 can also communicate with one or more external devices 300 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 200, and / or with any device that enables electronic device 200 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 250. Furthermore, electronic device 200 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 260. Network adapter 260 can communicate with other modules of electronic device 200 via bus 230. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 200, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0085] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. The technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, or network device, etc.) to execute the methods described above according to the embodiments of this application.

[0086] Software products may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example,, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections with one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0087] Computer-readable storage media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable storage medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0088] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0089] The aforementioned computer-readable medium carries one or more programs, which, when executed by a device, cause the computer-readable medium to perform the aforementioned functions.

[0090] Those skilled in the art will understand that the above modules can be distributed in the device as described in the embodiments, or they can be modified accordingly and placed in one or more devices that are unique to this embodiment. The modules in the above embodiments can be combined into one module, or they can be further divided into multiple sub-modules.

[0091] According to an embodiment of this application, a computer program is proposed, including a computer program or instructions, which, when executed by a processor, can perform the methods described above.

[0092] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. Furthermore, any changes or modifications made by those skilled in the art based on the ideas of this application, and on the specific implementation methods and application scope of this application, are all within the scope of protection of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for configuring energy consumption of new energy sources via a power electronic transmission system, characterized in that, The energy consumption configuration method includes: The first time is determined based on the emergency power regulation time of the power electronic transmission system connected to the power grid system and the maximum time requirement for grid fault ride-through. The second time is determined based on the fault ride-through characteristics and energy consumption characteristics of the new energy source. Compare the first time with the second time; Based on the comparison results and the rated power of the power electronic transmission system, configure the energy consumption; Based on the fault ride-through characteristics and energy consumption characteristics of new energy sources, the second time period is determined to include: The power generation of the photovoltaic and energy storage in the new energy is configured as the first power generation, and the fault ride-through characteristic of the photovoltaic and energy storage is that the active current can be quickly adjusted and output without the need to configure energy consumption during the ride-through. The power generation capacity of wind power in the new energy source is configured as the second power generation capacity, and the time for wind turbine to withstand full power consumption is configured as the fifth time. The fifth time is determined by the energy consumption configuration of the wind turbine. The fault ride-through characteristic of wind power is the current output characteristic of the wind turbine during the fault period after configuring the energy consumption of the wind turbine according to the grid or wind farm access standard. The second time is calculated based on the first power generation, the first time, the second power generation, the fifth time, and the rated power of the power electronic transmission system, as shown in the following formula: Wherein, P1 is the first power generation, T1 is the first time, P2 is the second power generation, and T5 is the fifth time. The rated power of the power electronic transmission system is given.

2. The energy consumption configuration method as described in claim 1, characterized in that, Based on the comparison result and the difference between the first and second times, the energy consumption is configured as follows: If the first time is greater than the second time, the energy consumption is configured according to the difference between the rated power of the power electronic transmission system and the first time minus the second time.

3. The energy consumption configuration method as described in claim 1, characterized in that, The new energy sources include photovoltaics, wind power, photovoltaic-wind power combinations, photovoltaic energy storage combinations, wind power energy storage combinations, or wind power-photovoltaic-energy storage combination systems.

4. The energy consumption configuration method as described in claim 1, characterized in that, The power electronic transmission system includes: One or more of the following: flexible DC transmission system, low-frequency transmission system, and DC transformer transmission system.

5. The energy consumption configuration method as described in claim 1, characterized in that, The first time is the greater of the emergency power regulation time of the power electronic transmission system's access to the power grid system and the maximum time of grid fault ride-through demand, as shown in the following formula: Where T1 is the first time. The third time is the time of maximum emergency power regulation demand of the grid-connected system, and the fourth time is the time of maximum fault ride-through demand of the grid-connected system. Both the time of maximum emergency power regulation demand and the time of maximum fault ride-through demand are determined by the demand of the grid-connected system.

6. The energy consumption configuration method as described in claim 1, characterized in that, When the first time is greater than the second time, configuring the energy consumption according to the difference between the rated power of the power electronic transmission system and the first time minus the second time includes determining the energy consumption according to the following formula: Where: T1 is the first time, and T2 is the second time. The rated power of the power electronic transmission system. This is the minimum energy value required for energy consumption.

7. The energy consumption configuration method as described in claim 6, characterized in that, The energy consumption configuration method further includes: If the first time is longer than the second time, the minimum power consumption is determined based on the minimum energy consumption value.

8. The energy consumption configuration method as described in claim 7, characterized in that, When the first time is greater than the second time, the minimum power consumption is determined based on the minimum energy consumption value, including: The minimum power consumption is determined according to the following formula: in, This is the minimum power consumption. T1 is the minimum energy value consumed, and T1 is the first time.

9. The energy consumption configuration method as described in claim 1, characterized in that, The energy consumption is AC energy consumption configured on the AC side, or the energy consumption is DC energy consumption configured on the DC side.

10. The energy consumption configuration method as described in claim 1, characterized in that, The energy consumption configuration method further includes: If the first time is not greater than the second time, the energy consumption is not configured.

11. A power consumption configuration device for a new energy source transmitted via a power electronic system, characterized in that, The energy consumption configuration device is used to perform the energy consumption configuration method as described in any one of claims 1-10, and the energy consumption configuration device includes: The first time determination unit is used to determine the first time based on the emergency power adjustment time of the power electronic transmission system connected to the power grid system and the maximum time requirement for grid fault ride-through. The second time determination unit is used to determine the second time based on the fault ride-through characteristics and configuration energy consumption characteristics of the new energy source; A comparison unit is used to compare the first time with the second time; An energy consumption configuration unit is used to configure the energy consumption based on the comparison results and the rated power of the power electronic transmission system.

12. An electronic device, comprising: Processing unit; as well as A storage unit stores a computer program, which, when executed by the processing unit, causes the processing unit to perform the energy consumption configuration method as described in any one of claims 1-10.

13. A non-transitory computer-readable storage medium having stored computer-readable instructions thereon, which, when executed by a processor, cause the processor to perform the power consumption configuration method as described in any one of claims 1-10.

Citation Information

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