Offshore wind plant phase modifier output optimization method and device, terminal equipment and storage medium

Abstract

The invention discloses an offshore wind plant phase modifier output optimization method and device, terminal equipment and a storage medium, and relates to the technical field of power systems, and the method comprises the steps: collecting the electrical parameters of a target offshore wind plant; determining the system short-circuit capacity of a direct current conversion bus in the target offshore wind plant according to the electrical parameters; and comparing the system short-circuit capacity with a preset threshold value, and adjusting reactive power output of a phase modifier in the target offshore wind plant according to a comparison result. The system short-circuit capacity can be accurately calculated according to the electrical parameters collected in real time, a data basis is provided for rapidly responding to dynamic changes of a power grid environment, reactive power output adjustment of the phase modifier is carried out according to a comparison result of the system short-circuit capacity and the preset threshold value, and the system short-circuit capacity is improved. The method can ensure that the offshore wind plant can stably operate in various power grid environments, so that the method can adapt to dynamic changes of the various power grid environments, and can meet the voltage stability requirement of the offshore wind plant.

Description

Technical Field

[0001] The present invention relates to the field of power systems, and in particular to a method, device, terminal equipment and storage medium for optimizing phase regulator output in an offshore wind farm. Background Art

[0002] The rapid development of offshore wind power has posed new challenges to grid stability due to the large-scale integration of offshore wind farms. Because offshore wind farms are typically located far from land, the system moment of inertia at their connection points is low, making the voltage stability at the connection point highly susceptible to influences from the receiving grid. To stabilize the voltage at the connection point, it is necessary to optimize the output of the offshore wind farm's phase-shifting converters to reduce the impact of grid disturbances on the voltage at the connection point.

[0003] Existing methods for optimizing phase-shifting converter output in offshore wind farms usually set the reactive power output of the phase-shifting converter to a fixed value, which cannot adapt to dynamic changes in the grid environment and makes it difficult to meet the voltage stability requirements of offshore wind farms. Summary of the Invention

[0004] The present invention provides a method, device, terminal equipment and storage medium for optimizing the output of a phase regulator in an offshore wind farm, which can solve the technical problem in the prior art that the reactive power output of the phase regulator is set to a fixed value, cannot adapt to the dynamic changes of the power grid environment, and makes it difficult to meet the voltage stability requirements of the offshore wind farm.

[0005] The present invention provides a method for optimizing phase shifter output in an offshore wind farm, comprising:

[0006] Collecting electrical parameters of the target offshore wind farm, wherein the electrical parameters include voltage data and current data;

[0007] determining, based on the electrical parameters, a system short-circuit capacity of a DC converter busbar in the target offshore wind farm;

[0008] The system short-circuit capacity is compared with a preset threshold, and the reactive output of the phase regulator in the target offshore wind farm is adjusted according to the comparison result.

[0009] Furthermore, determining the system short-circuit capacity of the DC converter busbar in the target offshore wind farm based on the electrical parameters includes:

[0010] determining a rated transmission capacity of the DC system according to the voltage data and the current data;

[0011] The system short-circuit capacity of the DC converter bus in the target offshore wind farm is determined according to the rated transmission capacity, the reactive output of the DC system in the reactive compensation equipment and the rated voltage of the AC bus of the converter station.

[0012] Furthermore, the expression of the system short-circuit capacity is as follows:

[0013]

[0014] Among them, S ac is the system short-circuit capacity, P d is the rated transmission capacity of the DC system, Q c It is the reactive power output of the reactive compensation equipment in the DC system. It is the square of the rated voltage of the AC busbar of the converter station.

[0015] Furthermore, adjusting the reactive output of the phase regulator in the target offshore wind farm according to the comparison result includes:

[0016] When the comparison result shows that the system short-circuit capacity is greater than a preset threshold, reducing the current reactive output of the phase regulator;

[0017] When the comparison result shows that the system short-circuit capacity is less than or equal to the preset threshold, the current reactive output of the phase modulator is increased.

[0018] Furthermore, adjusting the reactive output of the phase regulator in the target offshore wind farm according to the comparison result further includes:

[0019] According to the comparison result, the current reactive output of the phase regulator in the target offshore wind farm is adjusted to a preset target reactive output range.

[0020] The present invention also provides an offshore wind farm phase regulator output optimization device, comprising:

[0021] An electrical parameter acquisition module, configured to acquire electrical parameters of a target offshore wind farm, wherein the electrical parameters include voltage data and current data;

[0022] a system short-circuit capacity determination module, configured to determine the system short-circuit capacity of the DC converter busbar in the target offshore wind farm based on the electrical parameters;

[0023] The reactive output adjustment module is used to compare the system short-circuit capacity with a preset threshold value and adjust the reactive output of the phase regulator in the target offshore wind farm according to the comparison result.

[0024] Furthermore, determining the system short-circuit capacity of the DC converter busbar in the target offshore wind farm based on the electrical parameters includes:

[0025] determining a rated transmission capacity of the DC system according to the voltage data and the current data;

[0026] The system short-circuit capacity of the DC converter bus in the target offshore wind farm is determined according to the rated transmission capacity, the reactive output of the DC system in the reactive compensation equipment and the rated voltage of the AC bus of the converter station.

[0027] Furthermore, the expression of the system short-circuit capacity is as follows:

[0028]

[0029] Among them, S ac is the system short-circuit capacity, P d is the rated transmission capacity of the DC system, Q c It is the reactive power output of the reactive compensation equipment in the DC system. It is the square of the rated voltage of the AC busbar of the converter station.

[0030] Furthermore, the reactive power output of the phase regulator in the target offshore wind farm is adjusted according to the comparison results, including:

[0031] When the comparison result shows that the system short-circuit capacity is greater than the preset threshold, the current reactive output of the phase regulator is reduced;

[0032] When the comparison result shows that the system short-circuit capacity is less than or equal to the preset threshold, the current reactive output of the phase regulator is increased.

[0033] Furthermore, adjusting the reactive power output of the phase regulator in the target offshore wind farm according to the comparison result also includes:

[0034] According to the comparison results, the current reactive output of the phase regulator in the target offshore wind farm is adjusted to the preset target reactive output range.

[0035] The present invention also provides a terminal device, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the above-mentioned offshore wind farm phase regulator output optimization method is implemented.

[0036] The present invention also provides a computer-readable storage medium, comprising: a stored computer program, wherein, when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the above-mentioned offshore wind farm phase regulator output optimization method.

[0037] The following beneficial effects are achieved by implementing the present invention:

[0038] The present invention collects the electrical parameters of the target offshore wind farm in real time and determines the system short-circuit capacity of the DC converter bus in the target offshore wind farm. It can accurately calculate the system short-circuit capacity based on the electrical parameters collected in real time, providing a data basis for quickly responding to dynamic changes in the power grid environment. The reactive output of the phase-shifting device is adjusted according to the comparison result between the system short-circuit capacity and a preset threshold value, which can ensure that the offshore wind farm maintains stable operation under various power grid environments, thereby being able to adapt to the dynamic changes of various power grid environments and meet the voltage stability requirements of the offshore wind farm.

[0039] Furthermore, the present invention determines the rated transmission capacity of the DC system based on the voltage data and the current data, and further determines the system short-circuit capacity. It can use the accurate system transmission capacity as the data basis for calculating the short-circuit capacity, thereby providing a reliable data basis for adjusting the reactive output of the phase regulator, which is conducive to adjusting the reactive output of the phase regulator to a value that makes the voltage of the offshore wind farm grid connection point in a stable state, thereby effectively improving the voltage stability of the offshore wind farm grid connection point. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0041] Figure 1 This is a flow chart of a method for optimizing phase shifter output in an offshore wind farm provided by one embodiment of the present invention;

[0042] Figure 2 It is a structural schematic diagram of an offshore wind farm phase regulator output optimization device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0045] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0046] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0047] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0048] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0049] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0050] See also Figure 1To address the technical problem in the prior art of setting the reactive power output of a phase regulator to a fixed value, which is unable to adapt to dynamic changes in the power grid environment and thus makes it difficult to meet the voltage stability requirements of an offshore wind farm, an embodiment of the present invention provides a method for optimizing the output of a phase regulator in an offshore wind farm, comprising:

[0051] S1. Collecting electrical parameters of the target offshore wind farm, where the electrical parameters include voltage data and current data;

[0052] In an embodiment of the present invention, the target offshore wind farm may include a plurality of wind turbine generator sets, which are connected to an offshore substation via a collector line.

[0053] S2. Determine the system short-circuit capacity of the DC converter busbar in the target offshore wind farm based on the electrical parameters;

[0054] In the embodiment of the present invention, the DC busbar is a key technical component in the offshore wind farm power transmission system. The short-circuit capacity is an important indicator for measuring the ability of power to withstand short-circuit current, which can directly reflect the strength and stability of the system. The short-circuit capacity is closely related to the voltage stability of the system. Reasonable short-circuit capacity can ensure that the system voltage can quickly return to normal levels when a short circuit occurs, thereby improving voltage stability.

[0055] In the embodiment of the present invention, the rated transmission capacity of the DC system in the offshore wind farm can be determined according to the electrical parameters of the offshore wind farm, and the system short-circuit capacity of the DC converter bus in the target offshore wind farm can be further determined.

[0056] S3. Compare the system short-circuit capacity with a preset threshold value, and adjust the reactive output of the phase-converter in the target offshore wind farm according to the comparison result.

[0057] In an embodiment of the present invention, the phase regulator can be a distributed phase regulator installed at key nodes in an offshore wind farm, such as an offshore substation or an intermediate node in a collection line. The phase regulator operates based on the principle of electromagnetic induction, and its reactive power output is spontaneous and delay-free. When the phase regulator outputs a reasonable amount of reactive power, it can quickly suppress transient overvoltage or undervoltage conditions.

[0058] The embodiment of the present invention collects the electrical parameters of the target offshore wind farm in real time and determines the system short-circuit capacity of the DC converter bus in the target offshore wind farm. It can accurately calculate the system short-circuit capacity based on the electrical parameters collected in real time, providing a data basis for quickly responding to dynamic changes in the power grid environment. It also adjusts the reactive output of the phase regulator based on the comparison result between the system short-circuit capacity and the preset threshold value, ensuring that the offshore wind farm maintains stable operation under various power grid environments, thereby being able to adapt to the dynamic changes of various power grid environments and meeting the voltage stability requirements of the offshore wind farm.

[0059] In one embodiment, S2, determining the system short-circuit capacity of the DC converter busbar in the target offshore wind farm based on the electrical parameters, includes:

[0060] S21. Determine the rated transmission capacity of the DC system based on the voltage data and the current data;

[0061] In the embodiment of the present invention, the DC system is a system for power transmission in an offshore wind farm, which includes a high-voltage DC transmission system including a DC converter busbar. The rated output capacity of the DC system is expressed as follows:

[0062] P d =U*I;

[0063] Among them, U is the voltage data of the target offshore wind farm, and I is the current data of the target offshore wind farm.

[0064] S22. Determine the system short-circuit capacity of the DC converter bus in the target offshore wind farm based on the rated transmission capacity, the reactive output of the DC system at the reactive compensation equipment, and the rated voltage of the AC bus of the converter station.

[0065] In the embodiment of the present invention, the expression of the system short-circuit capacity is as follows:

[0066]

[0067] Among them, S ac is the system short-circuit capacity, P d is the rated transmission capacity of the DC system, Q c It is the reactive power output of the reactive compensation equipment in the DC system. The square of the rated voltage of the AC busbar of the converter station. Reactive power compensation equipment includes AC filters and capacitors installed on the converter busbar of the DC system.

[0068] In an embodiment of the present invention, the rated transmission capacity of the DC system is determined based on voltage data and current data, and the system short-circuit capacity is further determined. The accurate system transmission capacity can be used as the data basis for calculating the short-circuit capacity, thereby providing a reliable data basis for adjusting the reactive output of the phase regulator, which is conducive to adjusting the reactive output of the phase regulator to a value that makes the voltage at the offshore wind farm grid connection point stable, thereby effectively improving the voltage stability of the offshore wind farm grid connection point.

[0069] In one embodiment, adjusting the reactive output of the phase regulator in the target offshore wind farm according to the comparison result includes:

[0070] When the comparison result shows that the system short-circuit capacity is greater than the preset threshold, the current reactive output of the phase regulator is reduced;

[0071] In an embodiment of the present invention, when the comparison result shows that the system short-circuit capacity is greater than the preset threshold, it is determined that the current system short-circuit capacity is too large, which may cause transient overvoltage in the offshore wind farm. By reducing the current reactive output of the phase-shifting device in the offshore wind farm, the transient overvoltage in the offshore wind farm can be effectively suppressed, thereby stabilizing the voltage of the offshore wind farm and enabling the offshore wind farm to meet the voltage stability requirements.

[0072] When the comparison result shows that the system short-circuit capacity is less than or equal to the preset threshold, the current reactive output of the phase regulator is increased.

[0073] In an embodiment of the present invention, when the comparison result shows that the system short-circuit capacity is less than or equal to the preset threshold, it is determined that the current system short-circuit capacity is too small, which may cause transient low voltage in the offshore wind farm. By increasing the current reactive output of the phase-shifting device in the offshore wind farm, the transient low voltage in the offshore wind farm can be effectively suppressed, thereby stabilizing the voltage of the offshore wind farm and enabling the offshore wind farm to meet the voltage stability requirements.

[0074] In one embodiment, adjusting the reactive output of the phase regulator in the target offshore wind farm according to the comparison result further includes:

[0075] According to the comparison results, the current reactive output of the phase regulator in the target offshore wind farm is adjusted to the preset target reactive output range.

[0076] In the embodiment of the present invention, the target reactive power output range can be set according to actual needs. For example, the target reactive power output range is set to within ±10% of the system rated voltage to ensure voltage stability of the offshore wind farm.

[0077] The embodiment of the present invention adjusts the current reactive output of the phase regulator in the target offshore wind farm to a preset target output range, thereby effectively maintaining the voltage level of the offshore wind farm grid connection point and preventing the voltage from being too high or too low, thereby ensuring the steady state of the offshore wind farm grid connection point; the embodiment of the present invention adjusts the reactive output of the phase regulator to effectively increase the system's moment of inertia and improve the system's resistance to disturbances, thereby effectively improving the stability of the system; it can also optimize the power quality of the offshore wind farm, reduce voltage fluctuations and flicker, and improve the stability and reliability of the power.

[0078] In one embodiment, step S3, comparing the system short-circuit capacity with a preset threshold, and adjusting the reactive output of the phase-converter in the target offshore wind farm according to the comparison result, may further include:

[0079] Determine the short-circuit ratio of the offshore wind farm based on the system short-circuit capacity;

[0080] The short-circuit ratio is compared with a preset short-circuit ratio threshold, and the reactive output of the phase regulator in the target offshore wind farm is adjusted according to the comparison result.

[0081] In the embodiment of the present invention, the expression of the short circuit ratio is as follows:

[0082]

[0083] Among them, Escr is the short circuit ratio, S ac is the system short-circuit capacity, P d is the rated transmission capacity of the DC system.

[0084] In the embodiment of the present invention, the strength level of the receiving-end AC system of the offshore wind farm may also be determined according to the calculated short-circuit ratio.

[0085] For example, when the short-circuit ratio is greater than 5, the strength level of the receiving-end AC system is strong;

[0086] When the short-circuit ratio is greater than or equal to 2 and less than or equal to 3, the strength level of the receiving-end AC system is weak;

[0087] When the short-circuit ratio is less than 2, the strength level of the receiving-end AC system is weak.

[0088] In one embodiment, a specific embodiment of a method for optimizing phase regulator output in an offshore wind farm is provided.

[0089] In the embodiment of the present invention, it is assumed that the rated transmission capacity of the DC system of a certain offshore wind farm is P d =500MW, when the AC bus voltage of the converter station is rated, the reactive output of the reactive compensation equipment such as AC filters and capacitors installed on the converter bus of the DC system is Q c =200MVar, the short-circuit capacity is calculated based on the voltage and current parameters collected in real time by the monitoring unit:

[0090]

[0091] According to the calculation formula of short circuit ratio:

[0092]

[0093] Since Escr > 5, the receiving AC system of this offshore wind farm is a strong system. Based on the short-circuit ratio comparison results, the reactive power output of the distributed phase-converter can be appropriately reduced to optimize system operating efficiency.

[0094] In one embodiment, suppose a transient overvoltage event occurs during operation at an offshore wind farm, and the real-time collected voltage value exceeds 10% of the rated value. Based on the collected data, the reactive output of the distributed phase-converter is quickly adjusted to increase reactive power compensation, effectively suppressing the transient overvoltage and restoring the system voltage to a normal range, effectively avoiding grid disconnection accidents caused by transient overvoltage.

[0095] The implementation of the embodiments of the present invention has the following beneficial effects:

[0096] The embodiment of the present invention collects the electrical parameters of the target offshore wind farm in real time and determines the system short-circuit capacity of the DC converter bus in the target offshore wind farm. It can accurately calculate the system short-circuit capacity based on the electrical parameters collected in real time, providing a data basis for quickly responding to dynamic changes in the power grid environment. It also adjusts the reactive output of the phase regulator based on the comparison result between the system short-circuit capacity and the preset threshold value, ensuring that the offshore wind farm maintains stable operation under various power grid environments, thereby being able to adapt to the dynamic changes of various power grid environments and meeting the voltage stability requirements of the offshore wind farm.

[0097] Furthermore, the embodiment of the present invention determines the rated transmission capacity of the DC system based on the voltage data and the current data, and further determines the short-circuit capacity of the system. It can use the accurate system transmission capacity as the data basis for calculating the short-circuit capacity, thereby providing a reliable data basis for adjusting the reactive output of the phase regulator, which is conducive to adjusting the reactive output of the phase regulator to a value that makes the voltage at the offshore wind farm grid connection point in a stable state, thereby effectively improving the voltage stability of the offshore wind farm grid connection point.

[0098] See also Figure 2 Based on the same inventive concept as the above embodiment, the present invention also provides an offshore wind farm phase regulator output optimization device, comprising:

[0099] An electrical parameter acquisition module 10 is used to acquire electrical parameters of a target offshore wind farm, wherein the electrical parameters include voltage data and current data;

[0100] A system short-circuit capacity determination module 20 is used to determine the system short-circuit capacity of the DC converter bus in the target offshore wind farm based on electrical parameters;

[0101] The reactive output adjustment module 30 is used to compare the system short-circuit capacity with a preset threshold value and adjust the reactive output of the phase-converter in the target offshore wind farm according to the comparison result.

[0102] In one embodiment, determining the system short-circuit capacity of a DC busbar in a target offshore wind farm based on electrical parameters includes:

[0103] Determine the rated transmission capacity of the DC system based on voltage and current data;

[0104] The system short-circuit capacity of the DC converter bus in the target offshore wind farm is determined based on the rated transmission capacity, the reactive output of the DC system in the reactive compensation equipment, and the rated voltage of the AC bus in the converter station.

[0105] In one embodiment, the expression of the system short-circuit capacity is as follows:

[0106]

[0107] Among them, S ac is the system short-circuit capacity, P d is the rated transmission capacity of the DC system, Q c It is the reactive power output of the reactive compensation equipment in the DC system. It is the square of the rated voltage of the AC busbar of the converter station.

[0108] In one embodiment, adjusting the reactive output of the phase regulator in the target offshore wind farm according to the comparison result includes:

[0109] When the comparison result shows that the system short-circuit capacity is greater than the preset threshold, the current reactive output of the phase regulator is reduced;

[0110] When the comparison result shows that the system short-circuit capacity is less than or equal to the preset threshold, the current reactive output of the phase regulator is increased.

[0111] In one embodiment, adjusting the reactive output of the phase regulator in the target offshore wind farm according to the comparison result further includes:

[0112] According to the comparison results, the current reactive output of the phase regulator in the target offshore wind farm is adjusted to the preset target reactive output range.

[0113] The implementation of the embodiments of the present invention has the following beneficial effects:

[0114] The embodiment of the present invention collects the electrical parameters of the target offshore wind farm in real time and determines the system short-circuit capacity of the DC converter bus in the target offshore wind farm. It can accurately calculate the system short-circuit capacity based on the electrical parameters collected in real time, providing a data basis for quickly responding to dynamic changes in the power grid environment. It also adjusts the reactive output of the phase regulator based on the comparison result between the system short-circuit capacity and the preset threshold value, ensuring that the offshore wind farm maintains stable operation under various power grid environments, thereby being able to adapt to the dynamic changes of various power grid environments and meeting the voltage stability requirements of the offshore wind farm.

[0115] Furthermore, the embodiment of the present invention determines the rated transmission capacity of the DC system based on the voltage data and the current data, and further determines the short-circuit capacity of the system. It can use the accurate system transmission capacity as the data basis for calculating the short-circuit capacity, thereby providing a reliable data basis for adjusting the reactive output of the phase regulator, which is conducive to adjusting the reactive output of the phase regulator to a value that makes the voltage at the offshore wind farm grid connection point in a stable state, thereby effectively improving the voltage stability of the offshore wind farm grid connection point.

[0116] It can be understood that the above-mentioned device embodiment corresponds to the method embodiment of the present invention, which can implement any of the above-mentioned method embodiments of the present invention to provide an offshore wind farm phase regulator output optimization method.

[0117] It should be noted that the device embodiments described above are merely illustrative, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Furthermore, in the drawings of the device embodiments provided by the present invention, the connection relationship between modules indicates that they have a communication connection, which may be implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement the present invention without inventive effort.

[0118] Based on the above-mentioned embodiment of the method for optimizing the output of a phase regulator in a offshore wind farm, another embodiment of the present invention provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the method for optimizing the output of a phase regulator in a offshore wind farm according to any embodiment of the present invention is implemented.

[0119] For example, in this embodiment, the computer program may be divided into one or more modules, one or more of which are stored in a memory and executed by a processor to implement the present invention. One or more module elements may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in a terminal device.

[0120] The terminal device can be a computing device such as a desktop computer, notebook computer, PDA, or cloud server. The terminal device may include, but is not limited to, a processor and memory.

[0121] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor. The processor is the control center of the terminal device, connecting various parts of the entire terminal device using various interfaces and lines.

[0122] Based on the above-mentioned method embodiments, another embodiment of the present invention provides a computer-readable storage medium, including a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the offshore wind farm phase shifter output optimization method of any one of the above-mentioned method embodiments of the present invention.

[0123] Among them, the module / unit integrated in the device / terminal equipment, if implemented in the form of a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the process in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the processor, it can implement the steps of the above-mentioned various method embodiments. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. Computer-readable media may include: any entity or device that can carry computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0124] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for optimizing the output of a phase regulator in an offshore wind farm, characterized in that: include: Collecting electrical parameters of the target offshore wind farm, wherein the electrical parameters include voltage data and current data; determining, based on the electrical parameters, a system short-circuit capacity of a DC converter busbar in the target offshore wind farm; The system short-circuit capacity is compared with a preset threshold, and the reactive output of the phase regulator in the target offshore wind farm is adjusted according to the comparison result.

2. The method for optimizing the output of a phase regulator in an offshore wind farm according to claim 1, wherein: Determining the system short-circuit capacity of the DC converter busbar in the target offshore wind farm based on the electrical parameters includes: determining a rated transmission capacity of the DC system according to the voltage data and the current data; The system short-circuit capacity of the DC converter bus in the target offshore wind farm is determined according to the rated transmission capacity, the reactive output of the DC system in the reactive compensation equipment and the rated voltage of the AC bus of the converter station.

3. The method for optimizing the output of a phase regulator in an offshore wind farm according to claim 2, wherein: The expression of the system short-circuit capacity is as follows: Among them, S ac is the system short-circuit capacity, P d is the rated transmission capacity of the DC system, Q c It is the reactive power output of the reactive compensation equipment in the DC system. It is the square of the rated voltage of the AC busbar of the converter station.

4. The method for optimizing the output of a phase regulator in an offshore wind farm according to claim 1, wherein: The adjusting the reactive output of the phase regulator in the target offshore wind farm according to the comparison result includes: When the comparison result shows that the system short-circuit capacity is greater than a preset threshold, reducing the current reactive output of the phase regulator; When the comparison result shows that the system short-circuit capacity is less than or equal to the preset threshold, the current reactive output of the phase modulator is increased.

5. The method for optimizing the output of a phase regulator in an offshore wind farm according to claim 1, wherein: The step of adjusting the reactive output of the phase regulator in the target offshore wind farm according to the comparison result further includes: According to the comparison result, the current reactive output of the phase regulator in the target offshore wind farm is adjusted to a preset target reactive output range.

6. An offshore wind farm phase regulator output optimization device, characterized in that: include: An electrical parameter acquisition module, configured to acquire electrical parameters of a target offshore wind farm, wherein the electrical parameters include voltage data and current data; a system short-circuit capacity determination module, configured to determine the system short-circuit capacity of the DC converter busbar in the target offshore wind farm based on the electrical parameters; The reactive output adjustment module is used to compare the system short-circuit capacity with a preset threshold value and adjust the reactive output of the phase regulator in the target offshore wind farm according to the comparison result.

7. The offshore wind farm phase regulator output optimization device according to claim 6, characterized in that: Determining the system short-circuit capacity of the DC converter busbar in the target offshore wind farm based on the electrical parameters includes: determining a rated transmission capacity of the DC system according to the voltage data and the current data; The system short-circuit capacity of the DC converter bus in the target offshore wind farm is determined according to the rated transmission capacity, the reactive output of the DC system in the reactive compensation equipment and the rated voltage of the AC bus of the converter station.

8. The method for optimizing the output of a phase regulator in an offshore wind farm according to claim 7, wherein: The expression of the system short-circuit capacity is as follows: Among them, S ac is the system short-circuit capacity, P d is the rated transmission capacity of the DC system, Q c It is the reactive power output of the reactive compensation equipment in the DC system. It is the square of the rated voltage of the AC busbar of the converter station.

9. A terminal device, characterized in that: The method comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the method for optimizing the output of a phase regulator of an offshore wind farm as described in any one of claims 1 to 5 is implemented.

10. A computer-readable storage medium, characterized in that include: A stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the offshore wind farm phase regulator output optimization method according to any one of claims 1 to 5.

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