A method and system for controlling an energy consumption device of a new energy flexible direct transmission system

Abstract

The application discloses a kind of new energy flexible direct current transmission system's energy consumption device control method and system, comprising: when new energy flexible direct current transmission system occurs overvoltage or lockout, the surplus power amount of system and the minimum energy consumption capacity of energy consumption device are acquired;Determine first intermediate variable based on the surplus power amount and minimum energy consumption capacity;Data conversion is carried out to the first intermediate variable, to obtain signal control sequence;Energy consumption device is controlled based on the signal control sequence.The application can be matched and combined to the energy consumption device of different capacity configured, realize the smooth adjustment of energy consumption device power, to realize the smooth absorption of surplus power, reduce the impact of energy consumption device switching on alternating current system, it has important engineering practical value for guaranteeing power grid safe and stable operation.

Description

Technical Field

[0001] This invention relates to the field of power system safety and stability control technology, and more specifically, to a control method and system for energy-consuming devices in a new energy flexible direct transmission system. Background Technology

[0002] Flexible DC transmission technology, with its unique advantages of independent decoupling control of active and reactive power, access to passive networks, and no risk of commutation failure, has been increasingly widely applied in large-scale renewable energy transmission projects in deserts, Gobi, and arid regions in recent years. Renewable energy is transmitted via flexible DC transmission technology, and the amount of renewable energy generated is not controlled by the flexible DC transmission system. However, with the continuous increase in the capacity of flexible DC transmission projects, the problem of absorbing transient surplus power after a fault in the flexible DC transmission project has gradually become a major issue in engineering design and operation.

[0003] The issue of surplus power absorption is crucial to the operational safety of the entire flexible DC transmission project. During transient periods, surplus power that is not adequately absorbed will be directly injected into the converter station and stored in the converter station's MMC submodule capacitors. Excessive surplus power will directly threaten the operational safety of the converter station and may lead to dangerous accidents such as equipment burnout and project shutdown.

[0004] Therefore, a method for controlling the energy-consuming devices of a new energy flexible direct transmission system is needed. Summary of the Invention

[0005] This invention proposes a control method and system for energy-consuming devices in a new energy flexible direct transmission system, in order to solve the problem of how to control the energy-consuming devices of various groups of new energy flexible direct transmission systems with non-equal capacity configurations.

[0006] To address the aforementioned problems, according to one aspect of the present invention, a method for controlling energy-consuming devices in a new energy flexible direct transmission system is provided, the method comprising:

[0007] When the new energy flexible direct transmission system experiences overvoltage or blockage, obtain the system's surplus power and the minimum energy consumption capacity of the energy-consuming device.

[0008] The first intermediate variable is determined based on the surplus power and the minimum energy consumption capacity;

[0009] The first intermediate variable is converted to obtain a signal control sequence;

[0010] The energy-consuming device is controlled based on the signal control sequence.

[0011] Preferably, the method obtains the minimum energy consumption capacity by means of:

[0012] S1=m×S 总 ,

[0013] Wherein, S1 is the minimum energy consumption capacity; m is the ratio of the minimum energy consumption capacity to the rated capacity; S 总 The rated capacity of the new energy island flexible direct transmission system.

[0014] Preferably, determining the first intermediate variable based on the surplus power and the minimum energy consumption capacity includes:

[0015]

[0016] Where, N D S is the first intermediate variable; ADD S1 represents the surplus power; S2 represents the minimum energy consumption capacity. This indicates rounding up to the nearest integer.

[0017] Preferably, the data transformation of the first intermediate variable to obtain the signal control sequence includes:

[0018] Based on the number of energy-consuming devices in the new energy flexible direct transmission system, the first intermediate variable is converted into a binary second intermediate variable, and each bit of the second intermediate variable is extracted sequentially to obtain the signal control sequence.

[0019] In this sequence, for any element, 0 represents generating a shutdown signal and 1 represents generating a power-on signal; the length of the second intermediate variable is the same as the number of energy-consuming devices, and each bit of the second intermediate variable from the most significant bit to the least significant bit corresponds sequentially to the Nth to the 1st energy-consuming device; the energy consumption capacity of the 1st to the Nth energy-consuming devices satisfies: S1: S2: S3: ...: S N = 1:2:4:...:2 N-1 and The value of i ranges from 1, 2, ..., N; N is the number of energy-consuming devices; S 总 The rated capacity of the new energy island flexible direct transmission system.

[0020] According to another aspect of the present invention, a control system for the energy-consuming device of a new energy flexible direct transmission system is provided, the system comprising:

[0021] The data acquisition unit is used to acquire the surplus power of the system and the minimum energy consumption capacity of the energy-consuming device when the new energy flexible direct transmission system experiences overvoltage or blockage.

[0022] The first intermediate variable determination unit is used to determine the first intermediate variable based on the surplus power and the minimum energy consumption capacity.

[0023] A signal control sequence determination unit is used to perform data conversion on the first intermediate variable to obtain a signal control sequence;

[0024] A control unit is used to control the energy-consuming device based on the signal control sequence.

[0025] Preferably, the data acquisition unit acquires the minimum energy consumption capacity using the following method:

[0026] S1=m×S 总 ,

[0027] Wherein, S1 is the minimum energy consumption capacity; m is the ratio of the minimum energy consumption capacity to the rated capacity; S 总 The rated capacity of the new energy island flexible direct transmission system.

[0028] Preferably, the first intermediate variable determining unit determines the first intermediate variable based on the surplus power and the minimum energy consumption capacity, including:

[0029]

[0030] Where, N D S is the first intermediate variable; ADD S1 represents the surplus power; S2 represents the minimum energy consumption capacity. This indicates rounding up to the nearest integer.

[0031] Preferably, the signal control sequence determination unit performs data transformation on the first intermediate variable to obtain the signal control sequence, including:

[0032] Based on the number of energy-consuming devices in the new energy flexible direct transmission system, the first intermediate variable is converted into a binary second intermediate variable, and each bit of the second intermediate variable is extracted sequentially to obtain the signal control sequence.

[0033] In this sequence, for any element, 0 represents generating a shutdown signal and 1 represents generating a power-on signal; the length of the second intermediate variable is the same as the number of energy-consuming devices, and each bit of the second intermediate variable from the most significant bit to the least significant bit corresponds sequentially to the Nth to the 1st energy-consuming device; the energy consumption capacity of the 1st to the Nth energy-consuming devices satisfies: S1: S2: S3: ...: S N = 1:2:4:...:2 N-1 and The value of i ranges from 1, 2, ..., N; N is the number of energy-consuming devices; S 总 The rated capacity of the new energy island flexible direct transmission system.

[0034] According to another aspect of the present invention, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the steps of a method for controlling an energy-consuming device in an energy flexible direct transmission system.

[0035] According to another aspect of the present invention, the present invention provides an electronic device, comprising:

[0036] The aforementioned computer-readable storage medium; and

[0037] One or more processors for executing a program in the computer-readable storage medium.

[0038] This invention provides a method and system for controlling energy-consuming devices in a renewable energy flexible direct transmission system. The method includes: when an overvoltage or blockage occurs in the renewable energy flexible direct transmission system, acquiring the system's surplus power and the minimum energy consumption capacity of the energy-consuming devices; determining a first intermediate variable based on the surplus power and minimum energy consumption capacity; performing data conversion on the first intermediate variable to obtain a signal control sequence; and controlling the energy-consuming devices based on the signal control sequence. This invention enables the combination of energy-consuming devices with different capacities to achieve smooth power adjustment, thereby achieving smooth absorption of surplus power and reducing the impact of energy-consuming device switching on the AC system. This has significant engineering practical value for ensuring the safe and stable operation of the power grid. Attached Figure Description

[0039] Exemplary embodiments of the present invention can be more fully understood by referring to the following figures:

[0040] Figure 1 A flowchart of a method for controlling energy-consuming devices in a new energy flexible direct transmission system according to an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of a new energy flexible direct transmission system according to an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram illustrating the control of an energy-consuming device according to an embodiment of the present invention;

[0043] Figure 4 Example diagram of 1100MW energy-consuming device being installed in a 1500MW system according to an embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram of the energy-consuming device control system 500 of the new energy flexible direct transmission system according to an embodiment of the present invention. Detailed Implementation

[0045] Exemplary embodiments of the invention will now be described with reference to the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the drawings is not intended to limit the invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0046] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0047] Figure 1 This is a flowchart of a method for controlling energy-consuming devices in a new energy flexible direct transmission system according to an embodiment of the present invention. Figure 1 As shown, the energy-consuming device control method for a new energy flexible direct transmission system provided by this invention can combine and match energy-consuming devices of different capacities to achieve smooth adjustment of the power of the energy-consuming devices, thereby achieving smooth absorption of surplus power and reducing the impact of switching of energy-consuming devices on the AC system. This has significant engineering practical value for ensuring the safe and stable operation of the power grid. The energy-consuming device control method 100 for a new energy flexible direct transmission system provided by this invention begins at step 101. In step 101, when an overvoltage or blockage occurs in the new energy flexible direct transmission system, the surplus power of the system and the minimum energy consumption capacity of the energy-consuming devices are obtained.

[0048] Preferably, the method obtains the minimum energy consumption capacity by means of:

[0049] S1=m×S 总 ,

[0050] Wherein, S1 is the minimum energy consumption capacity; m is the ratio of the minimum energy consumption capacity to the rated capacity; S 总 The rated capacity of the new energy island flexible direct transmission system.

[0051] In step 102, a first intermediate variable is determined based on the surplus power and the minimum energy consumption capacity.

[0052] Preferably, determining the first intermediate variable based on the surplus power and the minimum energy consumption capacity includes:

[0053]

[0054] Where, N DS is the first intermediate variable; ADD S1 represents the surplus power; S2 represents the minimum energy consumption capacity. This indicates rounding up to the nearest integer.

[0055] Currently, the operation of energy-consuming resistors in engineering is controlled by using power electronic switches. The switching on and off of energy-consuming resistors is achieved by the control system generating switching signals based on surplus power, thereby realizing flexible control of energy-consuming resistors. Figure 2 This is a schematic diagram of a new energy flexible direct transmission system according to an embodiment of the present invention. After obtaining... Figure 2 After the energy-consuming device is coded, the power electronic switch of the energy-consuming device is controlled, thereby realizing the control of the energy-consuming device. The power electronic switch can use anti-parallel thyristors, IGBTs, IGCTs, GTOs, MOSFETs, or power transistors.

[0056] In this invention, when the flexible DC power dissipation control system is activated by a flexible DC system overvoltage signal or a lockout signal, the system will perform the following calculation: Divide the surplus power value by the minimum power dissipation capacity of the power dissipation device to obtain the decimal intermediate variable N corresponding to the surplus power. D ,include:

[0057]

[0058] Where, N D S is the first intermediate variable; ADD S1 represents the surplus power; S2 represents the minimum energy consumption capacity. This indicates rounding up to the nearest integer.

[0059] The minimum energy consumption capacity is obtained in the following ways:

[0060] S1=m×S 总 ,

[0061] Wherein, S1 is the minimum energy consumption capacity; m is the ratio of the minimum energy consumption capacity to the rated capacity; S 总 The rated capacity of the new energy island flexible direct transmission system.

[0062] In step 103, the first intermediate variable is converted to obtain a signal control sequence.

[0063] Preferably, the data transformation of the first intermediate variable to obtain the signal control sequence includes:

[0064] Based on the number of energy-consuming devices in the new energy flexible direct transmission system, the first intermediate variable is converted into a binary second intermediate variable, and each bit of the second intermediate variable is extracted sequentially to obtain the signal control sequence.

[0065] In this sequence, for any element, 0 represents generating a shutdown signal and 1 represents generating a power-on signal; the length of the second intermediate variable is the same as the number of energy-consuming devices, and each bit of the second intermediate variable from the most significant bit to the least significant bit corresponds sequentially to the Nth to the 1st energy-consuming device; the energy consumption capacity of the 1st to the Nth energy-consuming devices satisfies: S1: S2: S3: ...: S N = 1:2:4:...:2 N-1 and The value of i ranges from 1, 2, ..., N; N is the number of energy-consuming devices; S 总 The rated capacity of the new energy island flexible direct transmission system.

[0066] In step 104, the energy-consuming device is controlled based on the signal control sequence.

[0067] In this invention, after obtaining the first intermediate variable N... D Then, N D The signal is converted into a binary signal sequence arranged from least significant bit to most significant bit. The number of bits in the binary sequence is equal to the number of energy-consuming resistor groups installed. After obtaining the binary signal sequence, the switch signal generation module generates corresponding power electronic switch signals based on the 0 and 1 signals in the binary sequence; 0 indicates an off signal and 1 indicates an on signal. The power electronic switch signals generated from the binary signal sequence arranged from least significant bit to most significant bit are then transmitted to the power electronic switches controlling the energy-consuming devices in ascending order of energy consumption capacity, thereby controlling the energy-consuming devices.

[0068] In this invention, the energy-consuming devices include: AC energy-consuming resistors, DC energy-consuming resistors after rectification equipment, battery energy storage devices, compressed gas energy storage devices, flywheel energy storage devices, supercapacitor energy storage devices, capacitor bank energy storage devices, and superconducting coil energy storage devices.

[0069] The energy consumption capacity of the first to the Nth energy consumption devices satisfies: S1:S2:S3:...:S N = 1:2:4:...:2 N-1 and The value of i ranges from 1, 2, ..., N; N is the number of energy-consuming devices; S 总 The rated capacity of the new energy island flexible direct transmission system.

[0070] In this invention, when it is necessary to put into operation or cut off an energy-consuming device, the amount of surplus power is first determined, and then the surplus power is controlled according to the above-mentioned energy-consuming device control strategy to achieve the corresponding adjustment.

[0071] This invention can achieve precise tiered adjustment of the power of energy-consuming devices by controlling the proportion of their capacity and encoding the power electronic switches that control them, even when the number of energy-consuming devices in an engineering configuration is relatively small. This allows for more accurate control in the absorption of surplus power in flexible DC engineering projects.

[0072] When the surplus power of a certain project is 1150MW, after equipment Figure 4 After the four groups of large and small energy-consuming devices shown, Figure 3 After the energy consumption is triggered, the intermediate variable decimal number 11 is calculated, and after binary conversion, the binary number corresponding to the surplus power, 1011, is generated. Then, each bit of the binary number is passed to the energy consumption capacity in descending order of bit position. Figure 4 The four sets of energy-consuming devices shown are illustrated. Figure 4 A power electronic switch that receives an on signal will use 1 to indicate that the switch is on, and a power electronic switch that receives an off signal will use 0 to indicate that the switch is off.

[0073] A certain project has a capacity of 1500MW. To absorb transient surplus power, four 375MW energy-consuming resistors are configured, enabling four power regulation levels: 375MW, 750MW, 1125MW, and 1500MW. Following the proposed grouping strategy, four groups of energy-consuming resistors are configured with capacities of 800MW×1, 400MW×1, 200MW×1, and 100MW×1, respectively. Trigger pulses control the on / off state of the power electronic switches, using 0 and 1 to represent their on / off states. Based on the proposed energy-consuming resistor configuration principle, and following the proposed grouping configuration principle, a total of 15 power regulation levels (100MW, 200MW, ..., 1500MW) can be achieved. Under the original energy consumption configuration strategy, the minimum energy-consuming resistor capacity accounted for 25% of the system's rated capacity. After adopting the new strategy, the minimum energy consumption device's energy consumption capacity accounts for 6.67% of the system's rated capacity. Table 1 shows the switch codes and corresponding energy consumption power under the new strategy. The power consumption of energy-consuming devices with equal capacity configuration is shown in Table 2.

[0074] Table 1. Switching codes and corresponding power consumption under the new strategy.

[0075] Switch coding 0000 0001 0010 0011 0100 0101 0110 0111 Corresponding power 0MW 100MW 200MW 300MW 400MW 500MW 600MW 700MW Switch coding 1000 1001 1010 1011 1100 1101 1110 1111 Corresponding power 800MW 900MW 1000MW 1100MW 1200MW 1300MW 1400MW 1500MW

[0076] Table 2 Power Consumption Devices with Equal Capacity Configuration

[0077] Number of input groups Group 1 2 groups 3 groups 4 groups Power consumption 375MW 750MW 1125MW 1500MW

[0078] Figure 5 This is a schematic diagram of the energy-consuming device control system 500 of a new energy flexible direct transmission system according to an embodiment of the present invention. Figure 5As shown, the energy consumption device control system 500 of the new energy flexible direct transmission system provided in this embodiment of the invention includes: a data acquisition unit 501, a first intermediate variable determination unit 502, a signal control sequence determination unit 503, and a control unit 504.

[0079] Preferably, the data acquisition unit 501 is used to acquire the surplus power of the system and the minimum energy consumption capacity of the energy-consuming device when the new energy flexible direct transmission system experiences overvoltage or blockage.

[0080] Preferably, the data acquisition unit 501 acquires the minimum energy consumption capacity using the following method:

[0081] S1=m×S 总 ,

[0082] Wherein, S1 is the minimum energy consumption capacity; m is the ratio of the minimum energy consumption capacity to the rated capacity; S 总 The rated capacity of the new energy island flexible direct transmission system.

[0083] Preferably, the first intermediate variable determination unit 502 is used to determine the first intermediate variable based on the surplus power and the minimum energy consumption capacity.

[0084] Preferably, the first intermediate variable determining unit 502 determines the first intermediate variable based on the surplus power and the minimum energy consumption capacity, including:

[0085]

[0086] Where, N D S is the first intermediate variable; ADD S1 represents the surplus power; S2 represents the minimum energy consumption capacity. This indicates rounding up to the nearest integer.

[0087] Preferably, the signal control sequence determination unit 503 is used to perform data conversion on the first intermediate variable to obtain a signal control sequence.

[0088] Preferably, the signal control sequence determination unit 503 performs data conversion on the first intermediate variable to obtain the signal control sequence, including:

[0089] Based on the number of energy-consuming devices in the new energy flexible direct transmission system, the first intermediate variable is converted into a binary second intermediate variable, and each bit of the second intermediate variable is extracted sequentially to obtain the signal control sequence.

[0090] In this sequence, for any element, 0 represents generating a shutdown signal and 1 represents generating a power-on signal; the length of the second intermediate variable is the same as the number of energy-consuming devices, and each bit of the second intermediate variable from the most significant bit to the least significant bit corresponds sequentially to the Nth to the 1st energy-consuming device; the energy consumption capacity of the 1st to the Nth energy-consuming devices satisfies: S1: S2: S3: ...: S N = 1:2:4:...:2 N-1 and The value of i ranges from 1, 2, ..., N; N is the number of energy-consuming devices; S 总 The rated capacity of the new energy island flexible direct transmission system.

[0091] Preferably, the control unit 504 is used to control the energy-consuming device based on the signal control sequence.

[0092] The energy-consuming device control system 500 of the new energy flexible direct transmission system in this embodiment corresponds to the energy-consuming device control method 100 of the new energy flexible direct transmission system in another embodiment of this invention, and will not be described again here.

[0093] According to another aspect of the present invention, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the steps in a method for controlling the energy-consuming device of a new energy flexible direct transmission system.

[0094] According to another aspect of the present invention, the present invention provides an electronic device, comprising:

[0095] The aforementioned computer-readable storage medium; and

[0096] One or more processors for executing a program in the computer-readable storage medium.

[0097] The invention has been described with reference to a few embodiments. However, as will be known to those skilled in the art, and as defined in the appended claims, other embodiments besides those disclosed above fall equivalently within the scope of the invention.

[0098] Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the art, unless otherwise expressly defined herein. All references to “a / the / the [device, component, etc.]” ​​are openly interpreted as at least one instance of said device, component, etc., unless otherwise expressly stated. The steps of any method disclosed herein need not be performed in the exact order disclosed unless explicitly stated otherwise.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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 controlling energy-consuming devices in a new energy flexible direct transmission system, characterized in that, The method includes: When the new energy flexible direct transmission system experiences overvoltage or blockage, obtain the system's surplus power and the minimum energy consumption capacity of the energy-consuming device. The first intermediate variable is determined based on the surplus power and the minimum energy consumption capacity; The first intermediate variable is converted to obtain a signal control sequence; The energy-consuming device is controlled based on the aforementioned signal control sequence; The method obtains the minimum energy consumption capacity in the following manner: ， Wherein, S1 is the minimum energy consumption capacity; m is the ratio of the minimum energy consumption capacity to the rated capacity; The rated capacity of the flexible direct transmission system for isolated new energy islands; The step of determining the first intermediate variable based on the surplus power and the minimum energy consumption capacity includes: ， in, This is the first intermediate variable; The surplus power amount; Indicates rounding up; The step of performing data transformation on the first intermediate variable to obtain the signal control sequence includes: Based on the number of energy-consuming devices in the new energy flexible direct transmission system, the first intermediate variable is converted into a binary second intermediate variable, and each bit of the second intermediate variable is extracted sequentially to obtain the signal control sequence. In this sequence, for any element, 0 represents generating a shutdown signal and 1 represents generating a power-on signal; the length of the second intermediate variable is the same as the number of energy-consuming devices, and each bit of the second intermediate variable from the most significant bit to the least significant bit corresponds sequentially to the Nth to the 1st energy-consuming device; the energy consumption capacity of the 1st to the Nth energy-consuming devices satisfies: and The value of i ranges from 1, 2, ..., N; N is the number of energy-consuming devices. The rated capacity of the new energy island flexible direct transmission system.

2. A control system for the energy-consuming device of a new energy flexible direct transmission system, characterized in that, The system includes: The data acquisition unit is used to acquire the surplus power of the system and the minimum energy consumption capacity of the energy-consuming device when the new energy flexible direct transmission system experiences overvoltage or blockage. The first intermediate variable determination unit is used to determine the first intermediate variable based on the surplus power and the minimum energy consumption capacity. A signal control sequence determination unit is used to perform data conversion on the first intermediate variable to obtain a signal control sequence; A control unit for controlling the energy-consuming device based on the signal control sequence; The data acquisition unit acquires the minimum energy consumption capacity using the following method: ， Wherein, S1 is the minimum energy consumption capacity; m is the ratio of the minimum energy consumption capacity to the rated capacity; The rated capacity of the flexible direct transmission system for isolated new energy islands; The first intermediate variable determination unit determines the first intermediate variable based on the surplus power and the minimum energy consumption capacity, including: ， in, This is the first intermediate variable; The surplus power amount; Indicates rounding up; The signal control sequence determination unit performs data transformation on the first intermediate variable to obtain the signal control sequence, including: Based on the number of energy-consuming devices in the new energy flexible direct transmission system, the first intermediate variable is converted into a binary second intermediate variable, and each bit of the second intermediate variable is extracted sequentially to obtain the signal control sequence. In this sequence, for any element, 0 represents generating a shutdown signal and 1 represents generating a power-on signal; the length of the second intermediate variable is the same as the number of energy-consuming devices, and each bit of the second intermediate variable from the most significant bit to the least significant bit corresponds sequentially to the Nth to the 1st energy-consuming device; the energy consumption capacity of the 1st to the Nth energy-consuming devices satisfies: and The value of i ranges from 1, 2, ..., N; N is the number of energy-consuming devices. The rated capacity of the new energy island flexible direct transmission system.

3. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps of the method as described in claim 1.

4. An electronic device, characterized in that, include: The computer-readable storage medium as described in claim 3; as well as One or more processors for executing a program in the computer-readable storage medium.

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