Cable type selection method and device for wind generating set

Abstract

The invention relates to a wind generating set cable type selection method and device. The cable type selection method for the wind generating set comprises the following steps: determining verified cable current-carrying capacity based on cable type selection parameters of the wind generating set; in response to the fact that the verified cable current-carrying capacity is larger than the rated current of a single winding of a generator, determining a cable model associated with the verified cable current-carrying capacity as a cable model suitable for the wind generating set; and in response to the fact that the verified cable current-carrying capacity is smaller than or equal to the rated current of the single winding of the generator, resetting the cable type selection parameters of the wind generating set, and returning to the step of determining the verified cable current-carrying capacity. By the adoption of the method and device, the time needed by cable type selection calculation can be effectively shortened, the research and development period of the wind generating set is shortened, and the cable type selection result is more accurate by combining the actual layout of the wind generating set, the cable characteristics and other factors.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wind power generation, and more specifically, to a method and device for selecting cables for a wind power generator set. Background Art

[0002] The existing wind turbine cable selection calculation methods mainly include manual calculation methods and calculation methods through calculation sheets. The manual calculation method includes steps such as manual calculation by R&D personnel based on the relevant parameters of the wind turbine, manual reference to national standards, and manual writing of selection plans. The manual calculation method has the following disadvantages: repeated calculation steps, long calculation time, prone to calculation errors, frequent reference to standards, and non-standard selection reports. Compared with the manual calculation method, the method of calculating through calculation sheets can avoid the problem of manual calculation errors to a certain extent. The method of calculating through calculation sheets also has problems such as low user interactivity, long selection cycle, low accuracy, and poor traceability. Summary of the invention

[0003] In order to solve the above problems, the present disclosure proposes a method and device for selecting cables for a wind turbine generator set, a computing system, and a computer-readable storage medium.

[0004] According to one aspect of the present disclosure, a method for selecting cables for a wind turbine generator set is provided, the method comprising: determining a verified cable current carrying capacity based on cable selection parameters of the wind turbine generator set; in response to the verified cable current carrying capacity being greater than the rated current of a single winding of the generator, determining a cable model associated with the verified cable current carrying capacity as a cable model suitable for the wind turbine generator set; in response to the verified cable current carrying capacity being less than or equal to the rated current of a single winding of the generator, resetting the cable selection parameters of the wind turbine generator set, and returning to the step of determining the verified cable current carrying capacity.

[0005] Optionally, the cable selection parameters include cable working environment temperature, cable laying method and the number of single-phase parallel cables.

[0006] Optionally, based on the cable selection parameters of the wind turbine generator set, the step of determining the verified cable current-carrying capacity includes: determining a temperature correction coefficient based on the cable working environment temperature and the maximum operating temperature of the cable; determining a laying correction coefficient based on the cable laying method and the number of single-phase parallel cables; determining the verified cable current-carrying capacity based on the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables and the current-carrying capacity corresponding to the cable laying method.

[0007] Optionally, the cable selection parameters include the cable working environment temperature, the cable laying method, the soil type of the cable buried location and the number of single-phase parallel cables.

[0008] Optionally, based on the cable selection parameters of the wind turbine generator set, the step of determining the verified cable current-carrying capacity includes: determining a temperature correction coefficient based on the cable working environment temperature and the maximum operating temperature of the cable; determining a laying correction coefficient based on the cable laying method and the number of single-phase parallel cables; determining a thermal resistance coefficient based on the soil type at the buried cable location; determining the verified cable current-carrying capacity based on the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables, the thermal resistance coefficient and the current-carrying capacity corresponding to the cable laying method.

[0009] Optionally, the step of resetting the cable selection parameters of the wind turbine generator set includes: resetting the number of the single-phase parallel cables.

[0010] Optionally, the wind turbine generator cable selection method further includes: determining the rated current of a single winding of the generator based on a machine-side current input or a grid-side current input of the wind turbine generator and the number of generator windings.

[0011] Optionally, the method for selecting a cable for a wind turbine generator set further comprises: performing at least one of a voltage drop check, an economic check and a loss check on a cable model determined to be suitable for the wind turbine generator set.

[0012] According to another aspect of the present disclosure, a wind turbine cable selection device is provided, the wind turbine cable selection device comprising: a current carrying capacity verification unit, which determines a verified cable current carrying capacity based on cable selection parameters of the wind turbine; a selection unit, which determines a cable model associated with the verified cable current carrying capacity as a cable model suitable for the wind turbine in response to the verified cable current carrying capacity being greater than the rated current of a single winding of the generator; and a parameter resetting unit, which resets the cable selection parameters of the wind turbine in response to the verified cable current carrying capacity being less than or equal to the rated current of a single winding of the generator, and sends the reset cable selection parameters to the current carrying capacity correction unit.

[0013] Optionally, the cable selection parameters include cable working environment temperature, cable laying method and the number of single-phase parallel cables.

[0014] Optionally, the current-carrying capacity verification unit is configured to: determine a temperature correction coefficient based on the cable working environment temperature and the maximum operating temperature of the cable; determine a laying correction coefficient based on the cable laying method and the number of single-phase parallel cables; determine the verified cable current-carrying capacity based on the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables and the current-carrying capacity corresponding to the cable laying method.

[0015] Optionally, the cable selection parameters include the cable working environment temperature, the cable laying method, the soil type of the cable buried location and the number of single-phase parallel cables.

[0016] Optionally, the current-carrying capacity verification unit is configured to: determine a temperature correction coefficient based on the cable working environment temperature and the maximum operating temperature of the cable; determine a laying correction coefficient based on the cable laying method and the number of single-phase parallel cables; determine a thermal resistance coefficient based on the soil type at the buried cable location; determine the verified cable current-carrying capacity based on the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables, the thermal resistance coefficient and the current-carrying capacity corresponding to the cable laying method.

[0017] Optionally, the parameter resetting unit is configured to: reset the number of the single-phase parallel cables.

[0018] Optionally, the wind turbine cable selection device further includes: a generator single winding rated current determination unit, which determines the generator single winding rated current based on the machine-side current input or grid-side current input of the wind turbine and the number of generator windings.

[0019] Optionally, the wind turbine generator cable selection device further comprises: a verification unit, which performs at least one of a voltage drop verification, an economic verification and a loss verification on the cable model determined to be suitable for the wind turbine generator.

[0020] According to another aspect of the present disclosure, a computing system is provided that includes at least one computing device and at least one storage device storing instructions, wherein when the instructions are executed by the at least one computing device, the at least one computing device is prompted to execute the wind turbine cable selection method as described above.

[0021] According to another aspect of the present disclosure, a computer-readable storage medium storing instructions is provided, wherein when the instructions are executed by at least one computing device, the at least one computing device is prompted to execute the wind turbine cable selection method as described above.

[0022] By adopting the present disclosure, the time required for cable selection calculation can be effectively reduced, the research and development cycle of wind turbines can be shortened, and the cable selection result can be made more accurate by combining factors such as the actual layout of the wind turbines and cable characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or other objects and advantages of the present disclosure will become more apparent through the following description of embodiments in conjunction with the accompanying drawings, in which:

[0024] Figure 1 is a flow chart showing a method for selecting a cable for a wind turbine generator set according to an exemplary embodiment of the present disclosure;

[0025] Figure 2 is a flow chart showing a method for selecting a cable for a wind turbine generator set when laying the cable in a wind turbine generator set according to an embodiment of the present disclosure;

[0026] Figure 3 is a flow chart showing a method for selecting cables for wind turbine generator sets when buried underground or laid through pipes according to an embodiment of the present disclosure;

[0027] Figure 4 A block diagram showing a cable selection device for a wind turbine generator set according to an exemplary embodiment of the present disclosure;

[0028] Figure 5 is a block diagram illustrating a computing system including at least one computing device and at least one storage device storing instructions according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] Below, in conjunction with the accompanying drawings, a description of a specific embodiment is provided to help the reader obtain a comprehensive understanding of the method, device and / or system described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the method, device and / or system described herein will be clear. For example, the order of operations described herein is only an example and is not limited to those orders set forth herein, but can be changed as will be clear after understanding the disclosure of the present application, except for operations that must occur in a specific order. In addition, for greater clarity and simplicity, the description of features known in the art may be omitted.

[0030] Due to the complexity of the structure of wind turbines, the operating environment and laying methods of cables are significantly different from the application scenarios of conventional power cables. There are multiple laying methods in the same space, and the temperature changes in different spaces are also quite obvious. There are also underground and pipe-through forms, which makes it difficult to select the laying coefficient, temperature coefficient, thermal resistance coefficient, etc., and it is difficult to comprehensively evaluate their rationality.

[0031] In order to solve the above problems, the present disclosure proposes a method and device for selecting cables for a wind turbine generator set. Figure 1 is a flow chart showing a method for selecting cables for a wind turbine generator system according to an exemplary embodiment of the present disclosure.

[0032] like Figure 1 As shown, in step S101, based on the cable selection parameters of the wind turbine generator set, the verified cable current carrying capacity is determined. The use of cables in wind turbines mainly includes two scenarios: laying in the air in the wind turbine set; and partially buried or laid in pipes from the foundation through the wind turbine set to the outside of the tower.

[0033] In the example of laying in the air, the cable selection parameters include the cable working environment temperature, the cable laying method and the number of single-phase parallel cables. In this example, the temperature correction coefficient is determined based on the cable working environment temperature and the maximum operating temperature of the cable; the laying correction coefficient is determined based on the cable laying method and the number of single-phase parallel cables; the verified cable current carrying capacity is determined based on the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables and the current carrying capacity corresponding to the cable laying method. For example, the product of the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables and the current carrying capacity corresponding to the cable laying method can be determined as the verified cable current carrying capacity. Therefore, by combining factors such as the actual layout of the wind turbine and the characteristics of the cable, the cable selection result is made more accurate.

[0034] In the example of partial burial or pipe laying, the cable selection parameters include the cable working environment temperature, cable laying method, soil type at the buried cable location, and the number of single-phase parallel cables. In this example, based on the cable selection parameters of the wind turbine generator set, the step of determining the verified cable current carrying capacity includes: determining the temperature correction coefficient based on the cable working environment temperature and the maximum operating temperature of the cable; determining the laying correction coefficient based on the cable laying method and the number of single-phase parallel cables; determining the thermal resistance coefficient based on the soil type at the buried cable location; determining the verified cable current carrying capacity based on the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables, the thermal resistance coefficient, and the current carrying capacity corresponding to the cable laying method. For example, the product of the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables, the thermal resistance coefficient, and the current carrying capacity corresponding to the cable laying method can be determined as the verified cable current carrying capacity. Thus, the cable selection result is more accurate by combining factors such as the actual layout of the wind turbine generator set and the characteristics of the cable.

[0035] According to an embodiment of the present disclosure, the temperature correction coefficient K1 can be calculated according to the following formula:

[0036]

[0037] Among them, θn represents the maximum operating temperature of the cable, which is generally 90℃ or 105℃, θa represents the working environment temperature of the cable (that is, the ambient temperature at the installation site), and θc represents the known current-carrying temperature, which is 30℃.

[0038] Regarding the laying correction coefficient, different laying correction coefficients can be selected according to different laying positions. For example, when the laying position is the switch cabinet outlet or the saddle surface, the laying correction coefficient can be 0.96; when the laying position is the twisted cable straight section or the cable clamp on the inner wall of the tower, the laying correction coefficient can be 1.

[0039] After determining the verified cable current carrying capacity, in step S102, it is determined whether the verified cable current carrying capacity is greater than the rated current of the generator single winding. In an example, the rated current of the generator single winding can be determined based on the machine-side current input or the grid-side current input of the wind turbine generator set and the number of generator windings.

[0040] If it is determined in step S102 that the verified cable ampacity is greater than the rated current of the generator single winding, then in step S103, the cable model associated with the verified cable ampacity is determined as a cable model suitable for the wind turbine generator set. If it is determined in step S102 that the verified cable ampacity is less than or equal to the rated current of the generator single winding, then in step S104, the cable selection parameters of the wind turbine generator set are reset, and the process returns to step S101 to re-determine the verified cable ampacity. In the example, the number of single-phase parallel cables can be reset in step S104.

[0041] Furthermore, after the cable model associated with the verified cable current carrying capacity is determined as a cable model suitable for the wind turbine generator set in step S103, at least one of a voltage drop check, an economic check and a loss check may be performed on the cable model determined to be suitable for the wind turbine generator set.

[0042] The voltage drop test verifies the line voltage drop. For example, when the line voltage drop is not greater than 5%, the test result is qualified; when the line voltage drop is greater than 5%, the test result is unqualified. The principle is to simplify the AC line into a DC line, and use Ohm's law to approximately calculate the voltage difference between the beginning and the end of the line to obtain the voltage drop.

[0043] Regarding economic verification, the economic verification methods for conductors of the same material include the economic current density method and the cable cross-section method, and the economic verification methods for conductors of different materials include the comprehensive cost method comparison. Here, the economic current density method refers to: based on the preliminary selected value of the single-phase current and the number of single-phase cables in parallel, the economic current density is calculated. The larger the economic current density of the cable, the better the economy of the cable. In the cable cross-section method, the comparison can be made based on the total value of the conductor cross-section. The smaller the corresponding total value of the conductor cross-section, the better the economy of the cable. In the comprehensive cost method, a comprehensive comparison is made based on the product of the unit price and usage of conductors of different materials. The lower the corresponding comprehensive cost of the conductor, the better the economy of the cable.

[0044] Loss verification refers to the calculation of the cable's own loss, comparing the values ​​of cable loss under different selection results, and optimizing the solution with the lowest loss. For example, loss verification is directly related to parameters such as current value, frequency, maximum DC resistance of conductor at 20°C, constant mass temperature coefficient of material at 20°C, center distance between two cables, conductor diameter, conductor operating temperature, and number of cables. In addition, the skin effect coefficient and proximity effect coefficient can also be considered in loss verification. For example, the skin effect coefficient can be calculated based on the frequency and the maximum DC resistance of the conductor at 20°C, and the proximity effect coefficient can be calculated based on the constant mass temperature coefficient of material at 20°C, the center distance between two cables, and the skin effect coefficient. After obtaining the above parameters, each initially selected cable can be verified and the obtained loss values ​​can be compared to obtain the cable selection solution with the lowest loss.

[0045] In the example, the above three types of verification can be performed on each set of selection results, and then a comprehensive comparison can be performed to verify the preliminary selection results obtained by the current-carrying calculation to obtain the optimal selection result. When the three verification methods obtain different selection results, the economic verification can be referred to first, followed by the voltage drop verification, and finally the loss verification. In addition, the order of priority reference can be adjusted according to needs. For example, when the system takes efficiency as the primary consideration, the loss verification can be focused on.

[0046] By adopting the cable selection method for a wind turbine generator set according to the exemplary embodiment of the present disclosure, the iterative process of cable selection can be accelerated during product development, and multiple solutions can be compared in real time; by quickly and accurately comparing calculation results, the cable selection is made more accurate, and the optimal configuration of the cable can be achieved, thereby achieving the purpose of reducing costs.

[0047] Refer to the following Figure 2 and Figure 3 Describes the method of selecting cables for laying in the air and for laying underground or in pipes. Figure 2 The present invention is a flow chart showing a method for selecting a cable for a wind turbine generator set when laying the cable in a wind turbine generator set according to an embodiment of the present disclosure.

[0048] like Figure 2 As shown, in step S201, based on the machine-side current input or the grid-side current input of the wind turbine generator set and the number of generator windings, the rated current of a single winding of the generator is determined.

[0049] In step S202, the cable specifications are determined based on the current information. For example, the cable specifications for preliminary screening are determined based on the rated current information of the single winding of the generator. In step S203, the temperature correction coefficient is determined based on the cable working environment temperature and the maximum operating temperature of the cable. In step S204, the laying correction coefficient is determined based on the cable laying method and the number of single-phase parallel cables. In step S205, the verified cable current carrying capacity is determined based on the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables, and the current carrying capacity corresponding to the cable laying method. For example, the product of the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables, and the current carrying capacity corresponding to the cable laying method can be determined as the verified cable current carrying capacity.

[0050] Subsequently, in step S206, it is determined whether the verified cable current carrying capacity is greater than the rated current of the single winding of the generator. If it is determined in step S206 that the verified cable current carrying capacity is greater than the rated current of the single winding of the generator, then in step S207, the cable model associated with the verified cable current carrying capacity is determined as a cable model suitable for the wind turbine generator set. If it is determined in step S206 that the verified cable current carrying capacity is less than or equal to the rated current of the single winding of the generator, then in step S208, the cable selection parameters of the wind turbine generator set (for example, the number of single-phase parallel cables) are reset, and the process returns to step S204 to redetermine the laying correction coefficient and redetermine the verified cable current carrying capacity in step S205.

[0051] After the cable model associated with the verified cable current carrying capacity is determined as the cable model suitable for the wind turbine generator set in step S207, at least one of the voltage drop check, economic check and loss check can be performed on the cable model determined to be suitable for the wind turbine generator set in step S209 to obtain the optimal selection result. As a result, the iterative process of cable selection can be accelerated during product development, and the cable selection result can be made more accurate by combining factors such as the actual layout of the wind turbine generator set and the characteristics of the cable, and the optimal configuration of the cable can be achieved, thereby achieving the purpose of reducing costs.

[0052] Figure 3 The present invention is a flow chart showing a method for selecting cables for wind turbine generator sets when the cables are buried underground or laid through pipes according to an embodiment of the present disclosure.

[0053] like Figure 3As shown, in step S301, based on the machine-side current input or the grid-side current input of the wind turbine generator set and the number of generator windings, the rated current of a single winding of the generator is determined.

[0054] In step S302, the cable specifications are determined based on the current information. For example, the cable specifications for preliminary screening are determined based on the rated current information of the single winding of the generator. In step S303, the temperature correction coefficient is determined based on the cable working environment temperature and the maximum operating temperature of the cable. In step S304, the thermal resistance coefficient is determined based on the soil type of the buried cable location. In step S305, the laying correction coefficient is determined based on the cable laying method and the number of single-phase parallel cables. In step S306, the verified cable current carrying capacity is determined based on the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables, the thermal resistance coefficient, and the current carrying capacity corresponding to the cable laying method. For example, the product of the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables, the thermal resistance coefficient, and the current carrying capacity corresponding to the cable laying method can be determined as the verified cable current carrying capacity.

[0055] Subsequently, in step S307, it is determined whether the verified cable current carrying capacity is greater than the rated current of the single winding of the generator. If it is determined in step S307 that the verified cable current carrying capacity is greater than the rated current of the single winding of the generator, then in step S308, the cable model associated with the verified cable current carrying capacity is determined as a cable model suitable for the wind turbine generator set. If it is determined in step S307 that the verified cable current carrying capacity is less than or equal to the rated current of the single winding of the generator, then in step S309, the cable selection parameters of the wind turbine generator set (for example, the number of single-phase parallel cables) are reset, and the process returns to step S305 to redetermine the laying correction coefficient and redetermine the verified cable current carrying capacity in step S306.

[0056] After the cable model associated with the verified cable current carrying capacity is determined as the cable model suitable for the wind turbine generator set in step S308, at least one of the voltage drop check, economic check and loss check can be performed on the cable model determined to be suitable for the wind turbine generator set in step S310 to obtain the optimal selection result. As a result, the iterative process of cable selection can be accelerated during product development, and the cable selection result can be made more accurate by combining factors such as the actual layout of the wind turbine generator set and the characteristics of the cable, and the optimal configuration of the cable can be achieved, thereby achieving the purpose of reducing costs.

[0057] Figure 4 A block diagram of a cable selection device for a wind turbine generator set according to an exemplary embodiment of the present disclosure is shown.

[0058] like Figure 4As shown, the cable selection device for a wind turbine generator set according to an exemplary embodiment of the present disclosure includes: a current carrying capacity verification unit 401, which determines the verified cable current carrying capacity based on the cable selection parameters of the wind turbine generator set; a selection unit 402, which determines the cable model associated with the verified cable current carrying capacity as the cable model suitable for the wind turbine generator set in response to the verified cable current carrying capacity being greater than the rated current of the single winding of the generator; a parameter resetting unit 403, which resets the cable selection parameters of the wind turbine generator set in response to the verified cable current carrying capacity being less than or equal to the rated current of the single winding of the generator, and sends the reset cable selection parameters to the current carrying capacity correction unit.

[0059] In the example, the cable selection parameters include the cable working environment temperature, the cable laying method and the number of single-phase parallel cables. In the example, the current carrying capacity verification unit 401 is configured to: determine the temperature correction coefficient based on the cable working environment temperature and the maximum operating temperature of the cable; determine the laying correction coefficient based on the cable laying method and the number of single-phase parallel cables; determine the verified cable current carrying capacity based on the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables and the current carrying capacity corresponding to the cable laying method.

[0060] In the example, the cable selection parameters include the cable working environment temperature, the cable laying method, the soil type of the buried cable location, and the number of single-phase parallel cables. In the example, the current carrying capacity verification unit 401 is configured to: determine the temperature correction coefficient based on the cable working environment temperature and the maximum operating temperature of the cable; determine the laying correction coefficient based on the cable laying method and the number of single-phase parallel cables; determine the thermal resistance coefficient based on the soil type of the buried cable location; determine the verified cable current carrying capacity based on the temperature correction coefficient, the laying correction coefficient, the number of single-phase parallel cables, the thermal resistance coefficient, and the current carrying capacity corresponding to the cable laying method.

[0061] In the example, the parameter resetting unit 403 is configured to reset the number of single-phase parallel cables.

[0062] In an example, the cable selection device for a wind turbine generator set further includes: a generator single winding rated current determination unit, which determines the generator single winding rated current based on the machine-side current input or the grid-side current input of the wind turbine generator set and the number of generator windings. In an example, the cable selection device for a wind turbine generator set further includes: a verification unit, which performs at least one of a voltage drop verification, an economic verification, and a loss verification on a cable model determined to be suitable for a wind turbine generator set.

[0063] Combination of the above Figures 1 to 3 The specific operations shown are respectively Figure 4 The operation is performed by corresponding units in the wind turbine cable selection device 400 shown in the figure, and the specific operation details will not be repeated here.

[0064] By adopting the wind turbine cable selection device according to the exemplary embodiment of the present disclosure, the iterative process of cable selection can be accelerated during product development, and multiple schemes can be compared in real time; by quickly and accurately comparing calculation results, the cable selection is made more accurate, and the optimal configuration of the cable can be achieved, thereby achieving the purpose of reducing costs.

[0065] Figure 5 is a block diagram illustrating a computing system including at least one computing device and at least one storage device storing instructions according to an exemplary embodiment of the present disclosure.

[0066] like Figure 5 As shown, a computing system 500 provided according to an exemplary embodiment of the present invention includes a computing device 501 and a storage device 502, wherein the storage device 502 stores computer executable instructions. When the computer executable instructions are executed by the computing device 501, the wind turbine cable selection method described in any of the aforementioned embodiments is executed.

[0067] The computing device 501 is deployed in a server or client, and may also be deployed on a node device in a distributed network environment. In addition, the computing device 501 may be a PC computer, a tablet device, a personal digital assistant, a smart phone, a web application or other device capable of executing the above-mentioned instruction set. Here, the computing device is not necessarily a single computing device, but may also be any device or circuit capable of executing the above-mentioned instruction (or instruction set) individually or jointly. The computing device may also be a part of an integrated control system or a system manager, or may be configured as a portable electronic device interconnected with an interface locally or remotely (e.g., via wireless transmission). In the computing device, the processor includes a central processing unit (CPU), a graphics processing unit (GPU), a programmable logic device, a dedicated processor system, a microcontroller or a microprocessor. As an example and not limitation, the processor also includes an analog processor, a digital processor, a microprocessor, a multi-core processor, a processor array, a network processor, etc.

[0068] According to another aspect of the present disclosure, a computer-readable storage medium storing instructions is provided, and when the instructions are executed by at least one computing device, the at least one computing device is prompted to execute the wind turbine cable selection method described in any of the aforementioned embodiments. Computer-readable storage media include magnetic media such as floppy disks and tapes, optical media (including compact disk (CD) ROM and DVD ROM), magneto-optical media such as floppy disks, hardware devices such as ROM, RAM, and flash memory designed to store and execute program commands. The instructions may include language codes executable by a computer using an interpreter and machine language codes generated by a compiler.

[0069] By adopting the present disclosure, the time required for cable selection calculation can be effectively reduced, the research and development cycle of wind turbines can be shortened, and the cable selection result can be made more accurate by combining factors such as the actual layout of the wind turbines and cable characteristics.

[0070] The processes, methods or algorithms disclosed herein may be transmitted to or implemented by a processing device, a controller or a computer, which may include any existing programmable electronic control unit or a dedicated electronic control unit. Similarly, the processes, methods or algorithms may be stored in a variety of forms as data and instructions that can be executed by a controller or a computer, including but not limited to information being permanently stored on a non-writable storage medium (such as a ROM device) and information being variably stored on a writable storage medium (such as a floppy disk, a tape, a CD, a RAM device, and other magnetic and optical media). The processes, methods or algorithms may also be implemented in a software executable object. Optionally, the processes, methods or algorithms may be implemented in whole or in part using suitable hardware components (such as an ASIC, an FPGA, a state machine, a controller or other hardware components or devices) or a combination of hardware components, software components and firmware components.

[0071] Although the present disclosure includes specific examples, it will be apparent to those of ordinary skill in the art that various changes in form and detail may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein will be considered to be descriptive only and not for limiting purposes. The description of the features or aspects in each example will be considered to be applicable to similar features or aspects in other examples. Suitable results may be obtained if the described techniques are performed in a different order, and / or if the components in the described systems, architectures, devices, or circuits are combined in different ways and / or replaced or supplemented with other components or their equivalents in the described systems, architectures, devices, or circuits. Therefore, the scope of the present disclosure is not limited by specific embodiments, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents will be interpreted as included in the present disclosure.

Claims

1. A method for selecting cables for wind turbine generator sets, characterized in that: The wind turbine generator cable selection method comprises: Determining a verified cable current carrying capacity based on cable selection parameters of the wind turbine generator set; In response to the verified cable current carrying capacity being greater than the rated current of a single winding of the generator, determining a cable model associated with the verified cable current carrying capacity as a cable model suitable for the wind turbine generator set; In response to the verified cable current carrying capacity being less than or equal to the rated current of a single winding of the generator, the cable selection parameters of the wind turbine generator set are reset, and the process returns to the step of determining the verified cable current carrying capacity.

2. The method for selecting cables for wind turbine generator sets according to claim 1, characterized in that: The cable selection parameters include the cable working environment temperature, the cable laying method and the number of single-phase parallel cables.

3. The method for selecting cables for wind turbine generator sets according to claim 2, characterized in that: Based on the cable selection parameters of the wind turbine generator set, the step of determining the verified cable current carrying capacity includes: Determining a temperature correction coefficient based on the cable working environment temperature and the maximum operating temperature of the cable; Determining a laying correction coefficient based on the cable laying method and the number of single-phase parallel cables; The verified cable current carrying capacity is determined based on the temperature correction coefficient, the laying correction coefficient, the number of the single-phase parallel cables, and the current carrying capacity corresponding to the cable laying method.

4. The method for selecting cables for wind turbine generator sets according to claim 1, characterized in that: The cable selection parameters include the cable working environment temperature, the cable laying method, the soil type of the cable buried location and the number of single-phase parallel cables.

5. The method for selecting cables for wind turbine generator sets according to claim 4, characterized in that: Based on the cable selection parameters of the wind turbine generator set, the step of determining the verified cable current carrying capacity includes: Determining a temperature correction coefficient based on the cable working environment temperature and the maximum operating temperature of the cable; Determining a laying correction coefficient based on the cable laying method and the number of single-phase parallel cables; Determining a thermal resistance coefficient based on the soil type at the location where the cable is buried; The verified cable current carrying capacity is determined based on the temperature correction coefficient, the laying correction coefficient, the number of the single-phase parallel cables, the thermal resistance coefficient, and the current carrying capacity corresponding to the cable laying method.

6. The method for selecting cables for wind turbine generator sets according to claim 2 or 4, characterized in that: The step of resetting the cable selection parameters of the wind turbine generator set includes: resetting the number of the single-phase parallel cables.

7. The method for selecting cables for wind turbine generator sets according to claim 1, characterized in that: The method for selecting a cable for a wind turbine generator set further includes: determining a rated current of a single winding of the generator based on a machine-side current input or a grid-side current input of the wind turbine generator set and the number of generator windings.

8. The method for selecting cables for wind turbine generator sets according to claim 1, characterized in that: The method for selecting a cable for a wind turbine generator set further includes: performing at least one of a voltage drop check, an economic check and a loss check on a cable model determined to be suitable for the wind turbine generator set.

9. A cable selection device for a wind turbine generator set, characterized in that: The wind turbine cable selection device comprises: A current carrying capacity verification unit, which determines the verified current carrying capacity of the cable based on the cable selection parameters of the wind turbine generator set; A selection unit, in response to the verified cable current carrying capacity being greater than the rated current of a single winding of the generator, determines a cable model associated with the verified cable current carrying capacity as a cable model suitable for the wind turbine generator set; The parameter resetting unit resets the cable selection parameters of the wind turbine generator set in response to the verified cable current carrying capacity being less than or equal to the rated current of the single winding of the generator, and sends the reset cable selection parameters to the current carrying capacity correction unit.

10. A computing system comprising at least one computing device and at least one storage device storing instructions, characterized in that: When the instructions are executed by the at least one computing device, the at least one computing device is prompted to execute the method for selecting cables for a wind turbine generator set according to any one of claims 1-8.

11. A computer-readable storage medium storing instructions, characterized in that: When the instruction is executed by at least one computing device, the at least one computing device is prompted to execute the method for selecting cables for a wind turbine generator set according to any one of claims 1-8.

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