Phase Adjustment Method and System for Offshore Wind Power Transmission System Based on Grid-Forming Wind Turbines

Abstract

The present invention discloses a phase adjustment method and system for an offshore wind power transmission system based on grid-type wind turbines, which relates to the technical field of harmonic suppression in power systems. The method obtains the power parameters of two buses to be adjusted and the electrical parameters of each grid-type wind turbine in the buses to be adjusted, screens all grid-type wind turbines and all power parameters, obtains reference parameters and multiple target wind turbines, performs phase adjustment analysis on the electrical parameters and reference parameters of each target wind turbine, obtains control instructions corresponding to each target wind turbine, performs grid phase control processing on the reference parameters and the electrical parameters of each grid-type wind turbine, obtains control instructions corresponding to each grid-type wind turbine, and uses each control instruction to adjust the phase of the associated grid-type wind turbine or target wind turbine. The method solves the technical problem that the existing technology cannot accurately adjust the phase of an offshore wind power transmission system composed of multiple grid-type wind turbines.

Description

Technical Field

[0001] The present invention relates to the technical field of power system harmonic suppression, and in particular to a phase adjustment method and system for an offshore wind power transmission system based on grid-type wind turbines. Background Art

[0002] As global demand for clean energy continues to grow, offshore wind power, as a key source of renewable energy, is experiencing rapid development. The scale of offshore wind farms is increasing, the installed capacity of individual wind farms is increasing, and wind farms are gradually expanding from nearshore locations to deepwater areas. This has led to the integration of a large number of auxiliary starting equipment and AC / DC filtering devices into offshore wind power transmission systems, seriously impacting their economic and practicality. Therefore, further optimization of offshore wind power transmission systems is crucial.

[0003] Currently, existing technologies primarily utilize diode converter topology wind power transmission systems to achieve onshore and offshore wind power transmission. However, diode converter topology wind power transmission systems must utilize grid-type wind turbines. For systems composed of multiple grid-type wind turbines, adjusting the phases of the two branches of the wind power transmission system as required is a pressing issue. Summary of the Invention

[0004] The present invention provides a phase adjustment method and system for an offshore wind power transmission system based on grid-type wind turbines. This method addresses the existing problem of using a diode converter topology to achieve wind power transmission between land and sea. However, a diode converter topology wind power transmission system must use grid-type wind turbines. Systems composed of multiple grid-type wind turbines lack a method for adjusting the phases of two branches in the wind power transmission system as required, which reduces the reliability of the wind power transmission system.

[0005] A first aspect of the present invention provides a phase adjustment method for an offshore wind power transmission system based on grid-type wind turbines, comprising:

[0006] Acquiring operating condition data of two buses to be regulated in an offshore wind power transmission system, wherein the operating condition data includes power parameters of the buses to be regulated and electrical quantity parameters of each grid-type wind turbine in the buses to be regulated;

[0007] Screening all the grid-type wind turbines and all the power parameters to obtain benchmark parameters and target wind turbines corresponding to each busbar to be adjusted;

[0008] Performing phase control analysis on the electrical quantity parameters and the reference parameters of each target wind turbine to obtain a control instruction corresponding to each target wind turbine, and using each control instruction to perform phase adjustment on the associated target wind turbine;

[0009] Performing grid phase control processing on the reference parameters and the electrical quantity parameters of each grid-type wind turbine to obtain control instructions corresponding to each grid-type wind turbine;

[0010] Each control instruction is used to adjust the phase of the associated grid-type wind turbine or the target wind turbine.

[0011] Optionally, the step of screening all the grid-type wind turbines and all the power parameters to obtain benchmark parameters and target wind turbines corresponding to each busbar to be adjusted includes:

[0012] Select any one of the power parameters as a reference parameter;

[0013] Obtaining a distance value from each of the grid-type wind turbines to a converter station in the offshore wind power transmission system;

[0014] The wind turbines with the smallest distance value are selected from the grid-type wind turbines associated with each busbar to be adjusted as the target wind turbines corresponding to each busbar to be adjusted.

[0015] Optionally, the electrical quantity parameters include a port AC voltage value, operating power, capacity power, and AC voltage value, and the step of performing phase control analysis on the electrical quantity parameters of each target wind turbine and the reference parameters to obtain a control instruction corresponding to each target wind turbine includes:

[0016] performing ratio processing on the operating power and capacity power of each target wind turbine to obtain a plurality of first ratios;

[0017] performing ratio processing on the port AC voltage value of each target wind turbine and the preset rated voltage to obtain a plurality of second ratios;

[0018] Inputting the reference parameter and the first ratio and the second ratio of each target wind turbine into a preset phase angle positioning function to obtain a target voltage phase angle corresponding to each target wind turbine;

[0019] The target voltage phase angle and AC voltage value corresponding to each target wind turbine are respectively input into a preset first network control model to obtain a control instruction corresponding to each target wind turbine.

[0020] Optionally, the first network control model includes a first phase angle calculator, a first voltage controller, a first integrator, a first adder, a first current controller, and a first parameter voltage calculator. The step of inputting the target voltage phase angle and AC voltage value corresponding to each target wind turbine into the preset first network control model to obtain the control instruction corresponding to each target wind turbine includes:

[0021] Using the first phase angle calculator to perform integration operation on the AC voltage value corresponding to each of the target wind turbines, to obtain a first phase angle value corresponding to each of the target wind turbines;

[0022] The first phase angle value and the target voltage phase angle corresponding to each target wind turbine are respectively added by the first adder to obtain a first sum value corresponding to each target wind turbine;

[0023] performing an integration operation on the first sum value corresponding to each of the target wind turbines and the pre-acquired system rated angular frequency by the first integrator, respectively, to obtain a first integral value corresponding to each of the target wind turbines;

[0024] Using the first voltage controller to perform voltage control processing on the AC voltage value corresponding to each target wind turbine and the pre-acquired first AC voltage target value, respectively, to obtain a first voltage value corresponding to each target wind turbine;

[0025] Performing current control processing on each of the first voltage values and the pre-acquired first DC voltage target value by the first current controller to obtain a first current value corresponding to each of the target wind turbines;

[0026] The first parameter voltage calculator is used to perform phase angle control processing on the first current value and the first integral value corresponding to each of the target wind turbines to obtain a control instruction corresponding to each of the target wind turbines.

[0027] Optionally, the step of performing grid phase control processing on the reference parameters and the electrical quantity parameters of each of the grid-type wind turbines to obtain a control instruction corresponding to each of the grid-type wind turbines includes:

[0028] performing ratio processing on the operating power and capacity power of each of the grid-type wind turbines to obtain a plurality of third ratios;

[0029] performing ratio processing on the port AC voltage value of each of the grid-type wind turbines and the preset rated voltage to obtain a plurality of fourth ratios;

[0030] Inputting the reference parameter, the third ratio and the fourth ratio corresponding to each of the grid-type wind turbines into the phase angle positioning function to obtain the grid voltage phase angle corresponding to each of the grid-type wind turbines;

[0031] Inputting the grid voltage phase angle and AC voltage value corresponding to each of the grid-type wind turbines into a preset second grid control model, wherein the second grid control model includes a first difference operator, a deviation angle calculator, a second phase angle calculator and an adjustment module;

[0032] performing an integral operation on the AC voltage value corresponding to each of the meshed type fans by the second phase angle calculator to obtain a second phase angle value corresponding to each of the meshed type fans;

[0033] Using the first difference operator to perform difference processing on the grid voltage phase angle and the second phase angle value corresponding to each of the grid-type wind turbines to obtain a deviation value corresponding to each of the grid-type wind turbines;

[0034] Using the deviation angle calculator to perform integration operation on each of the deviation values to obtain the deviation angle value corresponding to each of the grid-type fans;

[0035] The adjustment module performs angle adjustment processing on the deviation angle value, the second phase angle value and the AC voltage corresponding to each of the meshed-type fans, and obtains the control instructions corresponding to each of the meshed-type fans.

[0036] Optionally, the adjustment module includes a second voltage controller, a second integrator, a second adder, a second current controller, and a second parameter voltage calculator. The step of performing angle adjustment processing on the deviation angle value, the second phase angle value, and the AC voltage corresponding to each of the meshed wind turbines by the adjustment module to obtain a control instruction corresponding to each of the meshed wind turbines includes:

[0037] The deviation angle value and the second phase angle value corresponding to each of the meshed type fans are summed by the second adder to obtain a second sum value corresponding to each of the meshed type fans;

[0038] Performing an integration operation on the second sum corresponding to each of the meshed type fans and the system rated angular frequency by the second integrator to obtain a second integral value corresponding to each of the meshed type fans;

[0039] Using the second voltage controller to perform voltage control processing on the AC voltage value corresponding to each of the grid-type wind turbines and the pre-acquired second AC voltage target value, to obtain the second voltage value corresponding to each of the grid-type wind turbines;

[0040] Performing current control processing on each of the second voltage values and the pre-acquired second DC voltage target value by the second current controller to obtain a second current value corresponding to each of the grid-type wind turbines;

[0041] The second parameter voltage calculator performs phase angle control processing on the second current value and the second integral value corresponding to each meshed type wind turbine, and obtains a control instruction corresponding to each meshed type wind turbine.

[0042] A second aspect of the present invention provides a phase adjustment system for an offshore wind power transmission system based on a grid-type wind turbine, comprising:

[0043] An acquisition module is used to obtain operating condition data of two buses to be regulated in the offshore wind power transmission system, wherein the operating condition data includes power parameters of the buses to be regulated and electrical quantity parameters of each grid-type wind turbine in the buses to be regulated;

[0044] A screening module, configured to screen all the grid-type wind turbines and all the power parameters to obtain benchmark parameters and target wind turbines corresponding to each busbar to be adjusted;

[0045] A first control module is configured to perform phase control analysis on the electrical quantity parameters of each target wind turbine and the reference parameters to obtain a control instruction corresponding to each target wind turbine;

[0046] An analysis module, configured to perform grid phase control processing on the reference parameters and the electrical quantity parameters of each grid-type wind turbine to obtain a control instruction corresponding to each grid-type wind turbine;

[0047] The second control module is used to use various control instructions to adjust the phase of the associated grid-type wind turbines or target wind turbines.

[0048] A third aspect of the present invention provides an electronic device comprising a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the phase adjustment method for an offshore wind power transmission system based on a grid-type wind turbine as described in any one of the above items.

[0049] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed, implements the phase adjustment method for an offshore wind power transmission system based on grid-type wind turbines as described in any one of the above items.

[0050] A fifth aspect of the present invention provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer is caused to execute the phase adjustment method of the offshore wind power transmission system based on the grid-type wind turbine as described in any one of the above items.

[0051] It can be seen from the above technical solutions that the present invention has the following advantages:

[0052] The present invention performs phase control analysis on the electrical parameters and reference parameters of each target wind turbine, and performs grid phase control processing on the reference parameters and the electrical parameters of each grid-type wind turbine. This method obtains control instructions for each grid-type wind turbine or each target wind turbine on two buses to be adjusted within the offshore wind power transmission system, thereby achieving precise phase adjustment of the two buses to be adjusted. This overcomes the technical deficiency of the existing technology that cannot accurately adjust the phase of an offshore wind power transmission system composed of multiple grid-type wind turbines, and improves the reliability of the offshore wind power transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0054] Figure 1 A flowchart of a phase adjustment method for an offshore wind power transmission system based on grid-type wind turbines provided in the first embodiment of the present invention;

[0055] Figure 2 A flowchart of a phase adjustment method for an offshore wind power transmission system based on grid-type wind turbines provided in the second embodiment of the present invention;

[0056] Figure 3 A schematic structural diagram of an offshore wind power transmission system provided in the second embodiment of the present invention;

[0057] Figure 4 A schematic diagram of the structure of a first networking control model provided in the second embodiment of the present invention;

[0058] Figure 5 A schematic diagram of the structure of a second networking control model provided in the second embodiment of the present invention;

[0059] Figure 6 This is a structural block diagram of a phase adjustment system for an offshore wind power transmission system based on grid-type wind turbines provided in the third embodiment of the present invention;

[0060] Figure 7 This is a structural block diagram of an electronic device provided in Example 4 of the present invention. DETAILED DESCRIPTION

[0061] Embodiments of the present invention provide a phase adjustment method and system for an offshore wind power transmission system based on grid-type wind turbines. This method addresses the existing problem of using a diode converter topology to achieve wind power transmission between land and sea. However, a diode converter topology wind power transmission system must utilize grid-type wind turbines. Systems composed of multiple grid-type wind turbines lack a method for adjusting the phases of two branches within the wind power transmission system as required, which reduces the reliability of the wind power transmission system.

[0062] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0063] See also Figure 1 , Figure 1 This is a flowchart of the steps of a phase adjustment method for an offshore wind power transmission system based on grid-type wind turbines provided in Example 1 of the present invention.

[0064] The present invention provides a phase adjustment method for an offshore wind power transmission system based on a grid-type wind turbine, comprising:

[0065] Step 101: Acquire operating condition data of two buses to be regulated in an offshore wind power transmission system, wherein the operating condition data includes power parameters of the buses to be regulated and electrical quantity parameters of each grid-type wind turbine in the buses to be regulated;

[0066] Electrical quantity parameters refer to the active power, reactive power, AC voltage value at the ports of the grid-type wind turbines, operating power, capacity power and AC voltage value between each grid-type wind turbine.

[0067] Power parameters refer to the active power transmitted by the bus to be regulated and the bus phase angle, etc.

[0068] In an embodiment of the present invention, in response to a phase-controlled regulation request, operating condition data of two buses to be regulated in an offshore wind power transmission system are obtained, wherein the operating condition data include power parameters of the buses to be regulated and electrical quantity parameters of each grid-type wind turbine in the buses to be regulated.

[0069] Step 102: Screen all grid-type wind turbines and all power parameters to obtain benchmark parameters and target wind turbines corresponding to each busbar to be adjusted.

[0070] In an embodiment of the present invention, the grid-type wind turbine closest to the converter station of the offshore wind power transmission system in each bus to be adjusted is used as the target wind turbine corresponding to the bus to be adjusted, one of the two bus to be adjusted is selected as the reference bus, and the power parameters of the reference bus are used as the reference parameters.

[0071] Step 103: Perform phase control analysis on the electrical quantity parameters and reference parameters of each target wind turbine to obtain a control instruction corresponding to each target wind turbine;

[0072] The reference parameter refers to the bus phase angle of the bus to be adjusted.

[0073] In this embodiment of the present invention, a target wind turbine associated with a reference parameter is used as the target wind turbine for link A, and another target wind turbine is used as the target wind turbine for link B. The electrical parameters of each target wind turbine and the bus phase angle of the reference parameter are input into a preset wind turbine port voltage phase angle function to obtain the target voltage phase angle corresponding to each target wind turbine. The target voltage phase angle and AC voltage value corresponding to each target wind turbine are input into a preset first network control model to obtain the control instructions corresponding to each target wind turbine.

[0074] It should be noted that the wind turbine port voltage phase angle function is specifically:

[0075]

[0076] in, is the target voltage phase angle of the target wind turbine in link A, is the target voltage phase angle of the target wind turbine in link B, is the bus phase angle of link A, is the active power delivered by the wind turbine in link A to the bus, is the active power of the wind turbine in link A, is the ratio of the AC voltage at the fan port of link A to the system rated voltage, is the ratio of the operating power to the capacity power of the fan in link A, is the phase control angle difference (the value is 15°), is the ratio of the AC voltage at the fan port of link B to the system rated voltage, is the ratio of the wind turbine operating power to the capacity power of link B, is the active power delivered by the wind turbine in link B to the bus, is the active power of the wind turbine in link B.

[0077] Step 104: Perform grid phase control processing on the reference parameters and the electrical quantity parameters of each grid-type wind turbine to obtain control instructions corresponding to each grid-type wind turbine;

[0078] In an embodiment of the present invention, the meshed wind turbines associated with the reference parameters are used as link A meshed wind turbines, and the meshed wind turbines not associated with the reference parameters are used as link B meshed wind turbines. The reference parameters and the electrical quantity parameters of each meshed wind turbine are input into a preset meshed voltage phase angle function to obtain the meshed voltage phase angle of each meshed wind turbine. The meshed voltage phase angle and AC voltage of each meshed wind turbine are input into a preset second meshed control model to obtain the control instructions corresponding to each meshed wind turbine.

[0079] Step 105: Use each control instruction to adjust the phase of the associated grid-type wind turbine or the target wind turbine.

[0080] In the embodiment of the present invention, each control instruction is sent to the corresponding meshed wind turbine or target wind turbine, so that the meshed wind turbine or target wind turbine executes the control instruction and outputs the voltage after execution.

[0081] It should be noted that after each preset adjustment time, the process jumps to steps 101 - 105 , thereby performing real-time adjustment on the phase of the offshore wind power transmission system.

[0082] In this embodiment of the present invention, by performing phase control analysis on the electrical parameters and reference parameters of each target wind turbine and performing grid phase control processing on the reference parameters and the electrical parameters of each grid-type wind turbine, control instructions for each grid-type wind turbine or each target wind turbine on two buses to be adjusted within the offshore wind power transmission system are obtained, thereby achieving precise phase adjustment of the two buses to be adjusted. This overcomes the technical deficiency of the prior art in being unable to accurately adjust the phase of an offshore wind power transmission system composed of multiple grid-type wind turbines, and improves the operational reliability of the offshore wind power transmission system.

[0083] See also Figure 2 , Figure 2 A flowchart of the steps of a phase adjustment method for an offshore wind power transmission system based on grid-type wind turbines provided in the second embodiment of the present invention.

[0084] The present invention provides a phase adjustment method for an offshore wind power transmission system based on a grid-type wind turbine, comprising:

[0085] Step 201: Acquire operating condition data of two buses to be regulated in an offshore wind power transmission system, wherein the operating condition data includes power parameters of the buses to be regulated and electrical quantity parameters of each grid-type wind turbine in the buses to be regulated.

[0086] In an embodiment of the present invention, operating condition data of two buses to be adjusted in an offshore wind power transmission system are obtained through power monitoring equipment or a substation monitoring system, wherein the operating condition data include power parameters of the buses to be adjusted and electrical quantity parameters of each grid-type wind turbine in the buses to be adjusted.

[0087] It should be noted that the grid-type wind turbines in the offshore wind power transmission system are mainly connected to the AC bus in a chain manner.

[0088] Step 202: Select any one power parameter from various power parameters as a reference parameter.

[0089] In the embodiment of the present invention, see Figure 3 As shown in the figure, either AC bus A (i.e., the bus to be regulated) or AC bus B (i.e., the bus to be regulated) is selected as the reference bus, and the power parameters of the reference bus are used as the reference parameters. For example, if AC bus A is selected as the reference bus, the power parameters of AC bus A are used as the reference parameters.

[0090] It should be noted that the reference parameters include but are not limited to bus phase angle and bus AC voltage.

[0091] Step 203: Obtain the distance value from each grid-type wind turbine to the converter station in the offshore wind power transmission system.

[0092] In the embodiment of the present invention, see Figure 3 As shown in FIG, the distances from each grid-type wind turbine to the converter station in the offshore wind power transmission system are obtained from the topological diagram of the offshore wind power transmission system.

[0093] Step 204 : Select the grid-type wind turbines with the smallest distance value from each busbar to be adjusted as the target wind turbine corresponding to each busbar to be adjusted.

[0094] In the embodiment of the present invention, the wind turbine with the smallest distance value is selected from the grid-type wind turbines associated with AC bus A (i.e., the bus to be adjusted) or AC bus B (i.e., the bus to be adjusted) as the target wind turbine corresponding to each bus to be adjusted.

[0095] Step 205: Perform phase control analysis on the electrical quantity parameters and reference parameters of each target wind turbine to obtain a control instruction corresponding to each target wind turbine.

[0096] Furthermore, the electrical quantity parameters include the port AC voltage value, operating power, capacity power and AC voltage value. Step 205 includes the following sub-steps:

[0097] S11, performing ratio processing on the operating power and capacity power of each target wind turbine to obtain a plurality of first ratios;

[0098] In the embodiment of the present invention, the ratio between the operating power and the capacity power of each target wind turbine is calculated respectively to obtain a plurality of first ratios.

[0099] S12, performing ratio processing on the port AC voltage value of each target wind turbine and the preset rated voltage to obtain multiple second ratios;

[0100] In the embodiment of the present invention, the ratio between the port AC voltage value of each target wind turbine and the preset rated voltage is calculated respectively to obtain a plurality of second ratios.

[0101] S13, inputting the reference parameter and the first ratio and the second ratio of each target wind turbine into a preset phase angle positioning function to obtain a target voltage phase angle corresponding to each target wind turbine;

[0102] In an embodiment of the present invention, the bus phase angle of the reference parameter and the first ratio and the second ratio of each target wind turbine are input into a preset phase angle positioning function to obtain the target voltage phase angle corresponding to each target wind turbine.

[0103] It should be noted that, see Figure 3 As shown in Figure 1, offshore wind turbines are mainly connected to the AC bus in a chain-like manner. Therefore, we can first analyze a link connected to a bus. Assume that there are m wind turbines on link i, where the active power and reactive power between the jth wind turbine and the j+1th wind turbine are P and P, respectively. Aij , Q Aij , the voltage of the link connected to wind turbine j is U Aij , its phase is , the voltage of the link connected to wind turbine j is U Aij+1 , its phase is , the line impedance between fan j and fan j+1 is X Aij , then the active power and reactive power transmission formula is:

[0104]

[0105] The active power transferred between wind turbine j and wind turbine j+1 mainly depends on the AC voltage and phase angle at the two points. For grid-type wind turbines, the AC side voltage can be well controlled, so the voltage at each wind turbine access point can be basically considered unchanged. Therefore, the active power transferred mainly depends on the phase difference between the wind turbines at the two points. The phase of the j+1th wind turbine is:

[0106]

[0107] According to the above analysis, the active power transmitted to bus A by this link also mainly depends on the phase angle between the mth wind turbine and the AC voltage of bus A, which can be obtained:

[0108]

[0109] in, is the voltage amplitude of bus A, is the AC voltage phase angle of bus A, is the AC voltage amplitude at the port of wind turbine m, is the AC voltage amplitude at the port of wind turbine m+1.

[0110] Among them, P Aim is the active power that the entire link can deliver to bus A, then:

[0111]

[0112] Among them, P WAij is the power of the jth wind turbine in the i-th chain of busbar A, is the power of the jth wind turbine in the i-th chain of busbar A, R Aik is the resistance of the tie line between the kth wind turbine and the k+1th wind turbine in the i-th chain of busbar A. As can be seen, as the wind turbine power in this chain changes, the power ultimately transmitted to busbar A is also affected by the wind turbine power and the losses in the collection line. Therefore, based on the phase function of system busbar A and the wind turbine phase angle relationship function, the relationship between the phase angle at the busbar and the phase angles of each wind turbine in the same chain depends on the voltage at each wind turbine collection point, the transmission power on each collection line, and the impedance of each transmission line. If we assume that the AC voltage at each wind turbine collection point remains essentially unchanged despite the influence of the grid configuration, and that the collection link configuration remains unchanged, meaning that the impedance of each transmission line remains unchanged, then the phase angle relationship depends solely on the transmission power on each link, and the corresponding phase angle positioning function can be derived.

[0113] The phase function of bus A is specifically:

[0114]

[0115] The fan phase angle relationship function is specifically:

[0116]

[0117] The phase angle positioning function is specifically:

[0118]

[0119] S14. Input the target voltage phase angle and AC voltage value corresponding to each target wind turbine into a preset first network control model to obtain a control instruction corresponding to each target wind turbine.

[0120] Furthermore, the first network control model includes a first phase angle calculator, a first voltage controller, a first integrator, a first adder, a first current controller and a first parameter voltage calculator, and S14 includes the following sub-steps:

[0121] S141, using a first phase angle calculator to perform an integral operation on the AC voltage value corresponding to each target wind turbine to obtain a first phase angle value corresponding to each target wind turbine;

[0122] In the embodiment of the present invention, see Figure 4As shown, the AC voltage value corresponding to each target wind turbine is input into the first phase angle calculator for integration operation to obtain the first phase angle value corresponding to each target wind turbine.

[0123] S142, using a first adder to add the first phase angle value and the target voltage phase angle corresponding to each target wind turbine to obtain a first sum value corresponding to each target wind turbine;

[0124] In the embodiment of the present invention, the first phase angle value and the target voltage phase angle corresponding to the target wind turbine are respectively input into the first adder for summing, thereby obtaining the first sum value corresponding to each target wind turbine.

[0125] S143. Performing an integration operation on the first sum corresponding to each target wind turbine and the pre-acquired system rated angular frequency using a first integrator to obtain a first integral value corresponding to each target wind turbine;

[0126] In the embodiment of the present invention, the first sum value corresponding to each target wind turbine and the pre-acquired system rated angular frequency are respectively input into the first integrator for integration operation to obtain the first integral value corresponding to each target wind turbine.

[0127] S144: Using a first voltage controller to perform voltage control processing on the AC voltage value corresponding to each target wind turbine and the pre-acquired first AC voltage target value, respectively, to obtain a first voltage value corresponding to each target wind turbine;

[0128] In the embodiment of the present invention, the AC voltage value corresponding to each target wind turbine and the pre-acquired first AC voltage target value are respectively input into the first voltage controller for voltage control processing to obtain the first voltage value corresponding to each target wind turbine.

[0129] S145. Performing current control processing on each first voltage value and the pre-acquired first DC voltage target value by a first current controller to obtain a first current value corresponding to each target wind turbine;

[0130] In the embodiment of the present invention, each first voltage value and the pre-acquired first DC voltage target value are respectively input into the first current controller for current control processing to obtain the first current value corresponding to each target wind turbine.

[0131] S146 , using a first parameter voltage calculator to perform phase angle control processing on the first current value and the first integral value corresponding to each target wind turbine, to obtain a control instruction corresponding to each target wind turbine.

[0132] In an embodiment of the present invention, the first current value and the first integral value corresponding to each target wind turbine are respectively input into a first parameter voltage calculator for phase angle control processing to obtain a control instruction corresponding to each target wind turbine. Each control instruction is then used to control the corresponding target wind turbine.

[0133] Step 206: Perform grid phase control processing on the reference parameters and the electrical quantity parameters of each grid-type wind turbine to obtain control instructions corresponding to each grid-type wind turbine.

[0134] Furthermore, step 206 includes the following sub-steps:

[0135] S21, performing ratio processing on the operating power and capacity power of each grid-type wind turbine to obtain a plurality of third ratios;

[0136] In the embodiment of the present invention, the ratio between the operating power and the capacity power of each grid-type wind turbine is calculated respectively to obtain a plurality of third ratios.

[0137] S22, performing ratio processing on the port AC voltage value of each grid-type wind turbine and the preset rated voltage to obtain a plurality of fourth ratios;

[0138] It should be noted that the preset rated voltage refers to the rated voltage of the offshore wind power transmission system.

[0139] In the embodiment of the present invention, the ratio between the port AC voltage value of each meshed wind turbine and the preset rated voltage is calculated respectively to obtain the fourth ratio corresponding to each meshed wind turbine.

[0140] S23, inputting the reference parameter, the third ratio and the fourth ratio corresponding to each grid-type wind turbine into a phase angle positioning function to obtain the grid voltage phase angle corresponding to each grid-type wind turbine;

[0141] In an embodiment of the present invention, the reference parameter, the third ratio and the fourth ratio corresponding to each grid-type wind turbine are respectively input into the phase angle positioning function to obtain the grid voltage phase angle corresponding to each grid-type wind turbine.

[0142] It should be noted that the phase angle positioning function is specifically:

[0143]

[0144] in, is the grid voltage phase angle of the A-link grid-type wind turbine, is the grid voltage phase angle of the B-link grid-forming wind turbine.

[0145] S24, inputting the grid voltage phase angle and AC voltage value corresponding to each grid-type wind turbine into a preset second grid control model, wherein the second grid control model includes a first difference operator, a deviation angle calculator, a second phase angle calculator, and a regulation module;

[0146] In the embodiment of the present invention, see Figure 5 As shown, the grid voltage phase angle and AC voltage value corresponding to each grid-type wind turbine are respectively input into the preset second grid control model for grid control processing, wherein the second grid control model includes a first difference operator, a deviation angle calculator, a second phase angle calculator and an adjustment module.

[0147] S25, performing an integration operation on the AC voltage value corresponding to each grid-type wind turbine using a second phase angle calculator to obtain a second phase angle value corresponding to each grid-type wind turbine;

[0148] In an embodiment of the present invention, the AC voltage value corresponding to each grid-type wind turbine is input into the second phase angle calculator to obtain the second phase angle value corresponding to each grid-type wind turbine.

[0149] S26, using a first difference operator to perform difference processing on the grid voltage phase angle and the second phase angle value corresponding to each grid-type wind turbine to obtain a deviation value corresponding to each grid-type wind turbine;

[0150] In the embodiment of the present invention, the grid voltage phase angle and the second phase angle value corresponding to each grid-type wind turbine are respectively input into the first difference operator for difference processing to obtain the deviation value corresponding to each grid-type wind turbine.

[0151] S27, using a deviation angle calculator to perform integration operation on each deviation value to obtain a deviation angle value corresponding to each grid-type wind turbine;

[0152] In the embodiment of the present invention, each deviation value is input into the deviation angle calculator for integration operation to obtain the deviation angle value corresponding to each grid-type wind turbine.

[0153] It should be noted that the deviation angle calculator is specifically:

[0154]

[0155] in, is the deviation angle value, is the deviation value, is the deviation threshold.

[0156] S28. Perform angle adjustment processing on the deviation angle value, the second phase angle value, and the AC voltage corresponding to each meshed wind turbine through the adjustment module to obtain the control instructions corresponding to each meshed wind turbine.

[0157] Furthermore, the regulating module includes a second voltage controller, a second integrator, a second adder, a second current controller and a second parameter voltage calculator, and S28 includes the following sub-steps:

[0158] S281, summing the deviation angle value and the second phase angle value corresponding to each meshed wind turbine using a second adder to obtain a second sum value corresponding to each meshed wind turbine;

[0159] In the embodiment of the present invention, the deviation angle value and the second phase angle value corresponding to each meshed wind turbine are respectively input into the second adder for addition operation to obtain the second sum value corresponding to each meshed wind turbine.

[0160] S282: performing an integration operation on the second sum corresponding to each meshed wind turbine and the pre-acquired system rated angular frequency using a second integrator to obtain a second integral value corresponding to each meshed wind turbine;

[0161] In an embodiment of the present invention, the second sum value corresponding to each grid-type wind turbine and the system rated angular frequency are respectively input into the second integrator for integration operation to obtain the second integral value corresponding to each grid-type wind turbine.

[0162] S283: Using a second voltage controller to perform voltage control processing on the AC voltage value corresponding to each grid-type wind turbine and the pre-acquired second AC voltage target value, respectively, to obtain a second voltage value corresponding to each grid-type wind turbine;

[0163] In an embodiment of the present invention, the AC voltage value corresponding to each grid-type wind turbine and the pre-acquired second AC voltage target value are respectively input into the second voltage controller for voltage control processing to obtain the second voltage value corresponding to each grid-type wind turbine.

[0164] S284: Performing current control processing on each second voltage value and the pre-acquired second DC voltage target value using a second current controller to obtain a second current value corresponding to each grid-type wind turbine;

[0165] In an embodiment of the present invention, each second voltage value and a pre-acquired second DC voltage target value are respectively input into a second current controller for current control processing to obtain a second current value corresponding to each grid-type wind turbine.

[0166] S285 , performing phase angle control processing on the second current value and the second integral value corresponding to each meshed wind turbine using a second parameter voltage calculator to obtain a control instruction corresponding to each meshed wind turbine.

[0167] In an embodiment of the present invention, the second current value and the second integral value corresponding to each grid-type wind turbine are respectively input into the second parameter voltage calculator for phase angle control processing to obtain a control instruction corresponding to each grid-type wind turbine.

[0168] Step 207: Use each control instruction to perform phase adjustment on the associated grid-type wind turbine or target wind turbine.

[0169] In an embodiment of the present invention, each control instruction is sent to the associated grid-type wind turbine, so that the grid-type wind turbine executes the control instruction and outputs the voltage after the execution.

[0170] In this embodiment of the present invention, by performing phase control analysis on the electrical parameters and reference parameters of each target wind turbine and performing grid phase control processing on the reference parameters and the electrical parameters of each grid-type wind turbine, control instructions for each grid-type wind turbine or each target wind turbine on two buses to be adjusted within the offshore wind power transmission system are obtained, thereby achieving precise phase adjustment of the two buses to be adjusted. This overcomes the technical deficiency of the prior art in being unable to accurately adjust the phase of an offshore wind power transmission system composed of multiple grid-type wind turbines, and improves the operational reliability of the offshore wind power transmission system.

[0171] See also Figure 6 , Figure 6 This is a structural block diagram of a phase adjustment system for an offshore wind power transmission system based on grid-type wind turbines provided in the third embodiment of the present invention.

[0172] The present invention provides a phase adjustment system for an offshore wind power transmission system based on a grid-type wind turbine, comprising:

[0173] The acquisition module 301 is used to obtain the operating data of two buses to be regulated in the offshore wind power transmission system, wherein the operating data includes the power parameters of the buses to be regulated and the electrical quantity parameters of each grid-type wind turbine in the buses to be regulated.

[0174] The screening module 302 is used to screen all grid-type wind turbines and all power parameters to obtain the benchmark parameters and the target wind turbines corresponding to each busbar to be adjusted.

[0175] The first control module 303 is configured to perform phase control analysis on the electrical quantity parameters and the reference parameters of each target wind turbine to obtain a control instruction corresponding to each target wind turbine.

[0176] The analysis module 304 is used to perform grid phase control processing on the reference parameters and the electrical quantity parameters of each grid-type wind turbine to obtain the control instructions corresponding to each grid-type wind turbine.

[0177] The second control module 305 is configured to use various control instructions to perform phase adjustment on the associated grid-type wind turbines or target wind turbines.

[0178] Furthermore, the screening module 302 includes:

[0179] A first selection submodule is used to select any one power parameter from various power parameters as a reference parameter;

[0180] The second selection submodule is used to obtain the distance value from each grid-type wind turbine to the converter station in the offshore wind power transmission system;

[0181] The target wind turbines corresponding to the busbars to be adjusted are selected from the grid-type wind turbines associated with the busbars to be adjusted, respectively, with the smallest distance value.

[0182] Furthermore, the electrical quantity parameters include port AC voltage value, operating power, capacity power and AC voltage value. The first control module 303 includes:

[0183] A first analysis submodule is configured to perform ratio processing on the operating power and capacity power of each target wind turbine to obtain a plurality of first ratios;

[0184] The second analysis submodule is used to perform ratio processing on the port AC voltage value of each target wind turbine with the preset rated voltage to obtain a plurality of second ratios;

[0185] A third analysis submodule is configured to input the reference parameter and the first ratio and the second ratio of each target wind turbine into a preset phase angle positioning function to obtain a target voltage phase angle corresponding to each target wind turbine;

[0186] The first control submodule is used to input the target voltage phase angle and AC voltage value corresponding to each target wind turbine into a preset first network control model to obtain the control instructions corresponding to each target wind turbine.

[0187] Furthermore, the first network control model includes a first phase angle calculator, a first voltage controller, a first integrator, a first adder, a first current controller and a first parameter voltage calculator, and a first regulation submodule, including:

[0188] The first operation unit is configured to use a first phase angle calculator to perform an integration operation on the AC voltage value corresponding to each target wind turbine to obtain a first phase angle value corresponding to each target wind turbine;

[0189] The second operation unit is configured to add the first phase angle value and the target voltage phase angle corresponding to each target wind turbine through a first adder to obtain a first sum value corresponding to each target wind turbine;

[0190] a third operation unit, configured to perform an integration operation on the first sum value corresponding to each target wind turbine and the pre-acquired system rated angular frequency through the first integrator to obtain a first integral value corresponding to each target wind turbine;

[0191] a fourth operation unit, configured to use the first voltage controller to perform voltage control processing on the AC voltage value corresponding to each target wind turbine and the pre-acquired first AC voltage target value, respectively, to obtain a first voltage value corresponding to each target wind turbine;

[0192] a fifth operation unit, configured to perform current control processing on each first voltage value and the pre-acquired first DC voltage target value through a first current controller, to obtain a first current value corresponding to each target wind turbine;

[0193] The control unit is configured to use a first parameter voltage calculator to perform phase angle control processing on the first current value and the first integral value corresponding to each target wind turbine, so as to obtain a control instruction corresponding to each target wind turbine.

[0194] Furthermore, the analysis module 304 includes:

[0195] The first operation submodule is used to perform ratio processing on the operating power and capacity power of each grid-type wind turbine to obtain a plurality of third ratios;

[0196] The second operation submodule is used to perform ratio processing on the port AC voltage value of each grid-type wind turbine and the preset rated voltage to obtain a plurality of fourth ratios;

[0197] The third operator module is used to input the reference parameter, the third ratio and the fourth ratio corresponding to each grid-type wind turbine into the phase angle positioning function to obtain the grid voltage phase angle corresponding to each grid-type wind turbine;

[0198] a fourth operation submodule, configured to input the grid voltage phase angle and AC voltage value corresponding to each grid-type wind turbine into a preset second grid control model, wherein the second grid control model includes a first difference operator, a deviation angle calculator, a second phase angle calculator, and an adjustment module;

[0199] a fifth operation submodule, configured to perform an integral operation on the AC voltage value corresponding to each grid-type wind turbine using a second phase angle calculator to obtain a second phase angle value corresponding to each grid-type wind turbine;

[0200] A sixth operator module is configured to perform difference processing on the grid voltage phase angle and the second phase angle value corresponding to each grid-type wind turbine using the first difference operator to obtain a deviation value corresponding to each grid-type wind turbine;

[0201] A seventh operator module is used to perform an integration operation on each deviation value using a deviation angle calculator to obtain a deviation angle value corresponding to each grid-type wind turbine;

[0202] The eighth operation submodule is used to perform angle adjustment processing on the deviation angle value, the second phase angle value and the AC voltage corresponding to each grid-type wind turbine through the adjustment module to obtain the control instructions corresponding to each grid-type wind turbine.

[0203] Furthermore, the regulating module includes a second voltage controller, a second integrator, a second adder, a second current controller and a second parameter voltage calculator, and the eighth operator module includes:

[0204] The first operation unit is configured to add the deviation angle value and the second phase angle value corresponding to each meshed type wind turbine through a second adder to obtain a second sum value corresponding to each meshed type wind turbine;

[0205] a second operation unit, configured to perform an integration operation on the second sum corresponding to each meshed wind turbine and the pre-acquired system rated angular frequency through a second integrator to obtain a second integral value corresponding to each meshed wind turbine;

[0206] a third operation unit, configured to use a second voltage controller to perform voltage control processing on the AC voltage value corresponding to each grid-type wind turbine and the pre-acquired second AC voltage target value, to obtain a second voltage value corresponding to each grid-type wind turbine;

[0207] a fourth operation unit, configured to perform current control processing on each second voltage value and a pre-acquired second DC voltage target value through a second current controller, to obtain a second current value corresponding to each grid-type wind turbine;

[0208] The fifth operation unit is used to perform phase angle control processing on the second current value and the second integral value corresponding to each grid-type wind turbine through the second parameter voltage calculator to obtain the control instructions corresponding to each grid-type wind turbine.

[0209] See also Figure 7 , Figure 7 This is a structural block diagram of an electronic device provided in Example 4 of the present invention.

[0210] An electronic device according to an embodiment of the present invention includes: a memory 401 and a processor 402, wherein the memory 402 stores a computer program; when the computer program is executed by the processor 402, the processor 402 executes a phase adjustment method for an offshore wind power transmission system based on a grid-type wind turbine as described in any of the above embodiments.

[0211] Memory 401 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), EPROM, hard disk, or ROM. Memory 401 has storage space 403 for program code 413 for executing any of the method steps described above. For example, storage space 403 for program code may include individual program codes 413 for implementing various steps in the method described above. These program codes may be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards, or floppy disks. The program codes may be compressed, for example, in a suitable format. When executed by a processing device, these codes cause the processing device to execute the various steps in the method described above. These program codes may be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards, or floppy disks. The program codes may be compressed, for example, in a suitable format. When these codes are executed by a computing and processing device, they cause the computing and processing device to execute the various steps of the above-described method for phase adjustment of an offshore wind power transmission system based on grid-type wind turbines.

[0212] Embodiment 5 of the present invention further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the phase adjustment method of an offshore wind power transmission system based on grid-type wind turbines as described in any of the above embodiments is implemented.

[0213] Embodiment 6 of the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes a phase adjustment method for an offshore wind power transmission system based on a grid-type wind turbine as described in any of the above embodiments.

[0214] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0215] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0216] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0217] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0218] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the method of the present invention. The aforementioned storage medium includes various media that can store program code, such as USB flash drives, mobile hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0219] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A phase adjustment method for an offshore wind power transmission system based on a grid-type wind turbine, characterized in that: include: Acquiring operating condition data of two buses to be regulated in an offshore wind power transmission system, wherein the operating condition data includes power parameters of the buses to be regulated and electrical quantity parameters of each grid-type wind turbine in the buses to be regulated; Screening all the grid-type wind turbines and all the power parameters to obtain benchmark parameters and target wind turbines corresponding to each busbar to be adjusted; Performing phase control analysis on the electrical quantity parameters of each target wind turbine and the reference parameters to obtain control instructions corresponding to each target wind turbine; Performing grid phase control processing on the reference parameters and the electrical quantity parameters of each grid-type wind turbine to obtain control instructions corresponding to each grid-type wind turbine; Use various control instructions to adjust the phase of the associated grid-type wind turbines or target wind turbines; The electrical quantity parameters include a port AC voltage value, operating power, capacity power, and AC voltage value. The step of performing phase control analysis on the electrical quantity parameters of each target wind turbine and the reference parameters to obtain a control instruction corresponding to each target wind turbine includes: performing ratio processing on the operating power and capacity power of each target wind turbine to obtain a plurality of first ratios; performing ratio processing on the port AC voltage value of each target wind turbine and the preset rated voltage to obtain a plurality of second ratios; Inputting the reference parameter and the first ratio and the second ratio of each target wind turbine into a preset phase angle positioning function to obtain a target voltage phase angle corresponding to each target wind turbine; The target voltage phase angle and AC voltage value corresponding to each target wind turbine are respectively input into a preset first network control model to obtain a control instruction corresponding to each target wind turbine.

2. The phase adjustment method for offshore wind power transmission system based on grid-type wind turbines according to claim 1 is characterized in that: The step of screening all the grid-type wind turbines and all the power parameters to obtain the benchmark parameters and the target wind turbines corresponding to each busbar to be adjusted includes: Select any one of the power parameters as a reference parameter; Obtaining a distance value from each of the grid-type wind turbines to a converter station in the offshore wind power transmission system; The wind turbines with the smallest distance value are selected from the grid-type wind turbines associated with each busbar to be adjusted as the target wind turbines corresponding to each busbar to be adjusted.

3. The phase adjustment method for offshore wind power transmission system based on grid-type wind turbines according to claim 1 is characterized in that: The first network control model includes a first phase angle calculator, a first voltage controller, a first integrator, a first adder, a first current controller, and a first parameter voltage calculator. The step of inputting the target voltage phase angle and AC voltage value corresponding to each target wind turbine into the preset first network control model to obtain the control instruction corresponding to each target wind turbine includes: Using the first phase angle calculator to perform integration operation on the AC voltage value corresponding to each of the target wind turbines, to obtain a first phase angle value corresponding to each of the target wind turbines; The first phase angle value and the target voltage phase angle corresponding to each target wind turbine are respectively added by the first adder to obtain a first sum value corresponding to each target wind turbine; performing an integration operation on the first sum value corresponding to each of the target wind turbines and the pre-acquired system rated angular frequency by the first integrator, respectively, to obtain a first integral value corresponding to each of the target wind turbines; Using the first voltage controller to perform voltage control processing on the AC voltage value corresponding to each target wind turbine and the pre-acquired first AC voltage target value, respectively, to obtain a first voltage value corresponding to each target wind turbine; Performing current control processing on each of the first voltage values and the pre-acquired first DC voltage target value by the first current controller to obtain a first current value corresponding to each of the target wind turbines; The first parameter voltage calculator is used to perform phase angle control processing on the first current value and the first integral value corresponding to each of the target wind turbines to obtain a control instruction corresponding to each of the target wind turbines.

4. The phase adjustment method for offshore wind power transmission system based on grid-type wind turbines according to claim 1 is characterized in that: The step of performing grid phase control processing on the reference parameters and the electrical quantity parameters of each of the grid-type wind turbines to obtain control instructions corresponding to each of the grid-type wind turbines includes: performing ratio processing on the operating power and capacity power of each of the grid-type wind turbines to obtain a plurality of third ratios; performing ratio processing on the port AC voltage value of each of the grid-type wind turbines and the preset rated voltage to obtain a plurality of fourth ratios; Inputting the reference parameter, the third ratio and the fourth ratio corresponding to each of the grid-type wind turbines into the phase angle positioning function to obtain the grid voltage phase angle corresponding to each of the grid-type wind turbines; Inputting the grid voltage phase angle and AC voltage value corresponding to each of the grid-type wind turbines into a preset second grid control model, wherein the second grid control model includes a first difference operator, a deviation angle calculator, a second phase angle calculator and an adjustment module; performing an integral operation on the AC voltage value corresponding to each of the meshed type fans by the second phase angle calculator to obtain a second phase angle value corresponding to each of the meshed type fans; Using the first difference operator to perform difference processing on the grid voltage phase angle and the second phase angle value corresponding to each of the grid-type wind turbines to obtain a deviation value corresponding to each of the grid-type wind turbines; Using the deviation angle calculator to perform integration operation on each of the deviation values to obtain the deviation angle value corresponding to each of the grid-type fans; The adjustment module performs angle adjustment processing on the deviation angle value, the second phase angle value and the AC voltage corresponding to each of the meshed-type fans, and obtains the control instructions corresponding to each of the meshed-type fans.

5. The phase adjustment method for offshore wind power transmission system based on grid-type wind turbines according to claim 4 is characterized in that: The adjustment module includes a second voltage controller, a second integrator, a second adder, a second current controller, and a second parameter voltage calculator. The step of performing angle adjustment processing on the deviation angle value, the second phase angle value, and the AC voltage corresponding to each of the meshed wind turbines by the adjustment module to obtain a control instruction corresponding to each of the meshed wind turbines includes: The deviation angle value and the second phase angle value corresponding to each of the meshed type fans are summed by the second adder to obtain a second sum value corresponding to each of the meshed type fans; performing an integration operation on the second sum corresponding to each of the meshed wind turbines and the pre-acquired system rated angular frequency by the second integrator to obtain a second integral value corresponding to each of the meshed wind turbines; Using the second voltage controller to perform voltage control processing on the AC voltage value corresponding to each of the grid-type wind turbines and the pre-acquired second AC voltage target value, to obtain the second voltage value corresponding to each of the grid-type wind turbines; Performing current control processing on each of the second voltage values and the pre-acquired second DC voltage target value by the second current controller to obtain a second current value corresponding to each of the grid-type wind turbines; The second parameter voltage calculator performs phase angle control processing on the second current value and the second integral value corresponding to each meshed type wind turbine, and obtains a control instruction corresponding to each meshed type wind turbine.

6. A phase adjustment system for offshore wind power transmission system based on grid-type wind turbines, characterized in that: include: An acquisition module is used to obtain operating condition data of two buses to be regulated in the offshore wind power transmission system, wherein the operating condition data includes power parameters of the buses to be regulated and electrical quantity parameters of each grid-type wind turbine in the buses to be regulated; A screening module, configured to screen all the grid-type wind turbines and all the power parameters to obtain benchmark parameters and target wind turbines corresponding to each busbar to be adjusted; A first control module is configured to perform phase control analysis on the electrical quantity parameters of each target wind turbine and the reference parameters to obtain a control instruction corresponding to each target wind turbine; An analysis module, configured to perform grid phase control processing on the reference parameters and the electrical quantity parameters of each grid-type wind turbine to obtain a control instruction corresponding to each grid-type wind turbine; The second control module is used to adjust the phase of the associated grid-type wind turbine or the target wind turbine using various control instructions; The electrical quantity parameters include port AC voltage value, operating power, capacity power and AC voltage value. The first control module includes: A first analysis submodule is configured to perform ratio processing on the operating power and capacity power of each target wind turbine to obtain a plurality of first ratios; a second analysis submodule, configured to perform ratio processing on the port AC voltage value of each target wind turbine with a preset rated voltage to obtain a plurality of second ratios; A third analysis submodule is configured to input the reference parameter and the first ratio and the second ratio of each target wind turbine into a preset phase angle positioning function to obtain a target voltage phase angle corresponding to each target wind turbine; The first control submodule is used to input the target voltage phase angle and AC voltage value corresponding to each target wind turbine into a preset first network control model to obtain the control instructions corresponding to each target wind turbine.

7. An electronic device, characterized in that: It includes a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the phase adjustment method of the offshore wind power transmission system based on the grid-type wind turbine as described in any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed, the phase adjustment method of the offshore wind power transmission system based on the grid-type wind turbines as described in any one of claims 1 to 5 is implemented.

9. A computer program product, characterized in that The computer program product includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer is caused to execute the phase adjustment method for an offshore wind power transmission system based on a grid-type wind turbine as described in any one of claims 1 to 5.

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