Network construction type new energy station cooperative defense method and device

Abstract

The invention provides a network construction type new energy station cooperative defense method and device. Under the condition that the network construction type new energy station is in a dynamic stable state, autonomous defense is carried out on the oscillation risk; when the network construction type new energy station is in the transient stable state, adjusting the output power of the network construction type new energy station; and under the condition that the network construction type new energy station is in the off-network state, black-start control is carried out on the network construction type new energy station. It can be seen that control measures of the network construction type new energy field station in different states are given, cooperative defense control of the network construction type new energy field station can be achieved, meanwhile, the operation stability of the network construction type new energy field station is improved, and the stability and supporting capacity of the network construction type new energy field station in a complex power grid environment can be remarkably enhanced.

Description

Technical Field

[0001] This application relates to the field of new energy technology, specifically to a collaborative defense method and device for grid-type new energy power stations. Background Technology

[0002] With the widespread application of grid-connected converters in grid-connected renewable energy power plants, these plants face multiple challenges to stable operation. Regarding dynamic stability, the interaction between the power plant and the grid impedance can easily lead to oscillation risks. In terms of transient stability, grid-connected renewable energy power plants lack rapid power regulation capabilities when facing sudden grid faults, easily causing large-scale, ordered or disordered disconnection of generator units from the grid, triggering cascading failures. Regarding recovery, most grid-connected renewable energy power plants lack black-start capability, relying on the grid to provide initial voltage support, resulting in weak resistance to strong disturbances and poor self-recovery capabilities.

[0003] Related technologies typically employ centralized control for grid-connected renewable energy power plants. Specifically, the centralized control layer receives grid dispatch instructions, analyzes power plant operating data, formulates global control strategies, and sends dispatch instructions to lower-level equipment. The equipment control layer is responsible for executing upper-level instructions and managing the operating status of individual areas (such as photovoltaic zones or wind farms) or single types of equipment. The terminal sensing layer collects real-time equipment operating data and environmental data through sensors and intelligent monitoring and control devices, providing data support for upper-level control. However, because the operational stability of grid-connected renewable energy power plants heavily relies on centralized instructions from the grid dispatch center and external protection measures, their operational stability is relatively poor. Summary of the Invention

[0004] To address the issue of poor operational stability of grid-type renewable energy power plants in existing technologies, this application provides a collaborative defense method and device for grid-type renewable energy power plants.

[0005] Firstly, this application provides a collaborative defense method for grid-type renewable energy power stations, which may include: When a grid-type renewable energy power station is in a dynamically stable state, it can autonomously defend against oscillation risks.

[0006] When the grid-type renewable energy power station is in a transient stable state, the output power of the grid-type renewable energy power station is adjusted.

[0007] When a grid-connected renewable energy power station is offline, black start control is implemented for the grid-connected renewable energy power station.

[0008] Furthermore, collaborative defense methods may also include: If a grid-type renewable energy power station experiences oscillations, the oscillation damping ratio is calculated based on the oscillation information.

[0009] If the oscillation damping ratio does not exceed the preset damping ratio threshold, at least one of the following measures shall be taken to suppress the oscillation: (1) Adjust the operating conditions of heterogeneous equipment in grid-type new energy power stations.

[0010] (2) Switch heterogeneous devices from network-type mode / follow-network-type mode to follow-network-type mode / network-type mode.

[0011] (3) Locate the oscillation source based on the oscillation information and cut off the oscillation source.

[0012] Among the possible implementations, autonomous defense against oscillation risk includes: Based on the operational data of grid-type renewable energy power plants, the parameters of a pre-constructed impedance sweep frequency model are identified, and the dominant modes of the grid-type renewable energy power plants are calculated based on the identification results.

[0013] The oscillation damping margin is evaluated based on the dominant mode of the grid-type renewable energy power station, and the oscillation damping improvement of the grid-type power station is obtained.

[0014] Based on the damping adjustment sensitivity, operating conditions, and topology of heterogeneous equipment in grid-type renewable energy power plants, the target value of damping adjustment for heterogeneous equipment is determined by the oscillation damping increase of the grid-type power plant.

[0015] The damping adjustment target value of the heterogeneous equipment is sent to the heterogeneous equipment.

[0016] In other possible implementations, the output power of grid-connected renewable energy power plants is adjusted, including: The power regulation capacity of a grid-type renewable energy power station is calculated based on the output of heterogeneous equipment in the grid-type renewable energy power station.

[0017] Calculate the overall regulation capability of heterogeneous equipment based on its rated power.

[0018] The response efficiency of heterogeneous devices is calculated based on their actual response time.

[0019] The power allocation weight is calculated based on the overall adjustment capability and response efficiency of the heterogeneous equipment.

[0020] The power allocation weight is multiplied by the adjustable power limit of the grid-type new energy power station to obtain the power regulation command value of the heterogeneous equipment.

[0021] Send the power adjustment command value of the heterogeneous device to the heterogeneous device.

[0022] Optionally, the power regulation capacity of grid-connected renewable energy power stations meets the following requirements:

[0023] in, This indicates the active power regulation limit for grid-type renewable energy power plants. This indicates the reactive power regulation limit for grid-connected renewable energy power plants. This represents the active power command value issued by the power grid dispatch center. This represents the reactive power command value issued by the power grid dispatch center. Indicating the first in grid-type new energy power stations i The active power output of the heterogeneous equipment in Taiwan Indicates the first i The reactive power output of the heterogeneous equipment in Taiwan n This indicates the number of heterogeneous devices.

[0024] The integrated adjustment capability of heterogeneous equipment meets the following requirements:

[0025] in, This indicates the overall adjustment capability of heterogeneous equipment. This indicates the active power regulation capability of heterogeneous equipment. This indicates the reactive power regulation capability of heterogeneous equipment. Indicates the rated active power of heterogeneous equipment. Indicates the rated reactive power of heterogeneous equipment. This represents the first weighting coefficient. This represents the second weighting coefficient.

[0026] The heterogeneous equipment is a grid-connected device, and its active power regulation and reactive power regulation capabilities meet the following requirements:

[0027]

[0028] in, This indicates the active power regulation capability of the network-type equipment. This indicates the reactive power regulation capability of the network-type equipment. This indicates the active power regulation capability of the network-type equipment. This represents the actual value of the active power output by the network-connected equipment. This represents the actual value of the active power output of the network-connected device. This indicates the rated apparent power of the network-type equipment. This indicates the ramp rate of the network-type equipment. This indicates the control cycle of the network-type equipment.

[0029] The heterogeneous equipment is grid-connected equipment. The active power upward regulation capability, active power downward regulation capability, and reactive power regulation capability of the grid-connected equipment meet the following requirements:

[0030]

[0031]

[0032] in, This indicates the active power upscaling capability of grid-type equipment. This indicates the active power downward regulation capability of grid-type equipment. This indicates the reactive power regulation capability of grid-type equipment. Indicates the maximum allowable output power of the network-type equipment. This represents the actual value of the active power output of the network-type equipment. This represents the actual value of the reactive power output of the network-type equipment. Indicates the overload factor of the network-type equipment. Indicates the rated active power of grid-type equipment. Indicates the rated apparent power of the network-type equipment. This indicates the thermal stability reactive power limit for grid-type equipment.

[0033] This represents the discharge constraint function for grid-type energy storage devices in a grid-type renewable energy power station. The charging constraint function for grid-connected energy storage devices satisfies:

[0034]

[0035] in, This indicates the maximum allowable discharge power of the grid-type energy storage device. This indicates the maximum allowable charging power of grid-type energy storage devices. This indicates the actual state of charge of grid-connected energy storage devices. This indicates the reference state of charge of grid-connected energy storage devices. This indicates the upper limit of the state of charge of grid-type energy storage devices. This indicates the state of charge limit of grid-type energy storage devices.

[0036] For example, the response efficiency of heterogeneous devices satisfies:

[0037] in, This indicates the response efficiency of heterogeneous devices. This indicates the speed adjustment coefficient for heterogeneous equipment. This indicates the precision adjustment coefficient for heterogeneous devices. This indicates the actual response time of heterogeneous devices. This indicates the error ratio of heterogeneous devices.

[0038] Power allocation weights satisfy:

[0039] in, Indicates the first i Power allocation weights for heterogeneous devices. Indicates the first i The integrated adjustment capability of the heterogeneous equipment in Taiwan Indicates the first i Response efficiency of heterogeneous devices. n This indicates the number of heterogeneous devices.

[0040] Among other possible implementation methods, black start control for grid-connected renewable energy power plants includes: The black boot power supply is started according to the preset black boot initial strategy.

[0041] If the black-start power supply starts successfully, the power generation units within the grid-connected renewable energy power station will be connected to the station one by one, and the power generation units will be verified. Otherwise, the initial black-start strategy will be modified, and the black-start power supply will be restarted.

[0042] With all power generation units connected and operating normally, grid-connected renewable energy power plants are integrated into the main power grid in an islanded manner, gradually increasing the output power of grid-connected renewable energy power plants and enabling them to operate normally.

[0043] Optionally, the power generation unit may be verified, including: The excitation current, charging overvoltage, and self-excited oscillation of the power generation unit are verified. If the verification is successful, the next power generation unit is connected. If the verification fails, the startup path of the power generation unit is modified according to the preset coordination strategy, and the next power generation unit is started according to the startup path.

[0044] Secondly, this application provides a grid-type collaborative defense device for new energy power stations, which may include: The active defense module is used to autonomously defend against oscillation risks when the grid-type renewable energy power station is in a dynamically stable state.

[0045] The adjustment module is used to adjust the output power of the grid-type renewable energy power station when it is in a transient stable state.

[0046] The control module is used to perform black start control on grid-connected renewable energy power stations when they are offline.

[0047] Furthermore, the coordinated control device also includes a suppression module, which is specifically used for: If a grid-type renewable energy power station experiences oscillations, the oscillation damping ratio is calculated based on the oscillation information.

[0048] If the oscillation damping ratio does not exceed the preset damping ratio threshold, at least one of the following measures shall be taken to suppress the oscillation: (1) Adjust the operating conditions of heterogeneous equipment in grid-type new energy power stations.

[0049] (2) Switch heterogeneous devices from network-type mode / follow-network-type mode to follow-network-type mode / network-type mode.

[0050] (3) Locate the oscillation source based on the oscillation information and cut off the oscillation source.

[0051] In some possible implementations, the proactive defense module is specifically used for: Based on the operational data of grid-type renewable energy power plants, the parameters of a pre-constructed impedance sweep frequency model are identified, and the dominant modes of the grid-type renewable energy power plants are calculated based on the identification results.

[0052] The oscillation damping margin is evaluated based on the dominant mode of the grid-type renewable energy power station, and the oscillation damping improvement of the grid-type power station is obtained.

[0053] Based on the damping adjustment sensitivity, operating conditions, and topology of heterogeneous equipment in grid-type renewable energy power plants, the target value of damping adjustment for heterogeneous equipment is determined by the oscillation damping increase of the grid-type power plant.

[0054] The damping adjustment target value of the heterogeneous equipment is sent to the heterogeneous equipment.

[0055] In some other possible implementations, the adjustment module is specifically used for: The power regulation capacity of a grid-type renewable energy power station is calculated based on the output of heterogeneous equipment in the grid-type renewable energy power station.

[0056] Calculate the overall regulation capability of heterogeneous equipment based on its rated power.

[0057] The response efficiency of heterogeneous devices is calculated based on their actual response time.

[0058] The power allocation weight is calculated based on the overall adjustment capability and response efficiency of the heterogeneous equipment.

[0059] The power allocation weight is multiplied by the adjustable power limit of the grid-type new energy power station to obtain the power regulation command value of the heterogeneous equipment.

[0060] Send the power adjustment command value of the heterogeneous device to the heterogeneous device.

[0061] Optionally, the power regulation capacity of grid-connected renewable energy power stations meets the following requirements:

[0062] in, This indicates the active power regulation limit for grid-type renewable energy power plants. This indicates the reactive power regulation limit for grid-connected renewable energy power plants. This represents the active power command value issued by the power grid dispatch center. This represents the reactive power command value issued by the power grid dispatch center. Indicating the first in grid-type new energy power stations i The active power output of the heterogeneous equipment in Taiwan Indicates the first i The reactive power output of the heterogeneous equipment in Taiwan n This indicates the number of heterogeneous devices.

[0063] The integrated adjustment capability of heterogeneous equipment meets the following requirements:

[0064] in, This indicates the overall adjustment capability of heterogeneous equipment. This indicates the active power regulation capability of heterogeneous equipment. This indicates the reactive power regulation capability of heterogeneous equipment. Indicates the rated active power of heterogeneous equipment. Indicates the rated reactive power of heterogeneous equipment. This represents the first weighting coefficient. This represents the second weighting coefficient.

[0065] The heterogeneous equipment is a grid-connected device, and its active power regulation and reactive power regulation capabilities meet the following requirements:

[0066]

[0067] in, This indicates the active power regulation capability of the network-type equipment. This indicates the reactive power regulation capability of the network-type equipment. This indicates the active power regulation capability of the network-type equipment. This represents the actual value of the active power output by the network-connected equipment. This represents the actual value of the active power output of the network-connected device. This indicates the rated apparent power of the network-type equipment. This indicates the ramp rate of the network-type equipment. This indicates the control cycle of the network-type equipment.

[0068] The heterogeneous equipment is grid-connected equipment. The active power upward regulation capability, active power downward regulation capability, and reactive power regulation capability of the grid-connected equipment meet the following requirements:

[0069]

[0070]

[0071] in, This indicates the active power upscaling capability of grid-type equipment. This indicates the active power downward regulation capability of grid-type equipment. This indicates the reactive power regulation capability of grid-type equipment. Indicates the maximum allowable output power of the network-type equipment. This represents the actual value of the active power output of the network-type equipment. This represents the actual value of the reactive power output of the network-type equipment. Indicates the overload factor of the network-type equipment. Indicates the rated active power of grid-type equipment. Indicates the rated apparent power of the network-type equipment. This indicates the thermal stability reactive power limit for grid-type equipment.

[0072] This represents the discharge constraint function for grid-type energy storage devices in a grid-type renewable energy power station. The charging constraint function for grid-connected energy storage devices satisfies:

[0073]

[0074] in, This indicates the maximum allowable discharge power of the grid-type energy storage device. This indicates the maximum allowable charging power of grid-type energy storage devices. This indicates the actual state of charge of grid-connected energy storage devices. This indicates the reference state of charge of grid-connected energy storage devices. This indicates the upper limit of the state of charge of grid-type energy storage devices. This indicates the state of charge limit of grid-type energy storage devices.

[0075] The response efficiency of heterogeneous devices meets the following requirements:

[0076] in, This indicates the response efficiency of heterogeneous devices. This indicates the speed adjustment coefficient for heterogeneous equipment. This indicates the precision adjustment coefficient for heterogeneous devices. This indicates the actual response time of heterogeneous devices. This indicates the error ratio of heterogeneous devices.

[0077] Power allocation weights satisfy:

[0078] in, Indicates the first i Power allocation weights for heterogeneous devices. Indicates the first i The integrated adjustment capability of the heterogeneous equipment in Taiwan Indicates the first i Response efficiency of heterogeneous devices. n This indicates the number of heterogeneous devices.

[0079] In some other possible implementations, the control module is specifically used for: The black boot power supply is started according to the preset black boot initial strategy.

[0080] If the black-start power supply starts successfully, the power generation units within the grid-connected renewable energy power station will be connected to the station one by one, and the power generation units will be verified. Otherwise, the initial black-start strategy will be modified, and the black-start power supply will be restarted.

[0081] With all power generation units connected and operating normally, grid-connected renewable energy power plants are integrated into the main power grid in an islanded manner, gradually increasing the output power of grid-connected renewable energy power plants and enabling them to operate normally.

[0082] Furthermore, the control module is specifically used for: The excitation current, charging overvoltage, and self-excited oscillation of the power generation unit are verified. If the verification is successful, the next power generation unit is connected. If the verification fails, the startup path of the power generation unit is modified through a preset coordination strategy, and the next power generation unit is started according to the startup path.

[0083] In another aspect, this application also provides a computer device, including: one or more processors.

[0084] A processor is used to execute one or more programs.

[0085] When one or more programs are executed by one or more processors, the cooperative defense method described above is implemented.

[0086] Furthermore, this application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed, it implements the cooperative defense method described above.

[0087] Compared with the prior art, the beneficial effects of this application are as follows: The collaborative defense method for grid-connected renewable energy power plants provided in this application includes: autonomous defense against oscillation risks when the power plant is in a dynamically stable state; adjustment of the output power when the power plant is in a transiently stable state; and black-start control when the power plant is disconnected from the grid. It can be seen that this application provides control measures for grid-connected renewable energy power plants under different states, which not only achieves collaborative defense control but also improves the operational stability of the power plants, significantly enhancing their stability and support capabilities in complex power grid environments.

[0088] The control method provided in this application intelligently coordinates the damping capabilities of multiple heterogeneous devices within a grid-type new energy power station, forming a combined force to suppress oscillations. This suppresses the risk of oscillations from subsynchronous to high-frequency bands, autonomously maintaining the system damping level within the optimal range. This overcomes the limitation of single devices independently dealing with oscillations in related technologies, and improves the dynamic stability and anti-interference capability of grid-type new energy power stations.

[0089] The control method provided in this application, by rapidly adjusting power and coordinating with grid-connected and grid-connected equipment within the grid-connected renewable energy power plant, fully leverages the adjustment capabilities of readily available equipment, thereby significantly enhancing the transient support strength of the grid-connected renewable energy power plant for the power grid.

[0090] The control method provided in this application enables black-start control of grid-connected renewable energy power stations when they are offline. This not only shortens the fault recovery time but also completely changes the passive recovery of grid-connected renewable energy power stations, making them reliable nodes that enhance grid resilience. Attached Figure Description

[0091] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0092] Figure 1 This is a schematic flowchart of a collaborative defense method for grid-type new energy power stations in this application embodiment; Figure 2 This is a schematic flowchart illustrating an autonomous defense against oscillation risk in an embodiment of this application; Figure 3This is a schematic flowchart illustrating the adjustment of the output power of a grid-type renewable energy power station in an embodiment of this application; Figure 4 This is a schematic flowchart illustrating black start control of a grid-type renewable energy power station in an embodiment of this application. Figure 5 This is a schematic structural diagram of a grid-type collaborative defense device for new energy power stations in the embodiments of this application. Detailed Implementation

[0093] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0094] The terms "first," "second," etc., used in the specification, embodiments, claims, and drawings of this application are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, such as including a series of steps or units. A method, system, product, or apparatus is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0095] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0096] Example 1: This application provides a collaborative defense method for grid-type renewable energy power stations. For example... Figure 1 As shown, the collaborative defense method 100 includes the following steps: Step S1: Under the condition that the grid-type new energy power station is in a dynamic and stable state, autonomously defend against the risk of oscillation.

[0097] Step S2: When the grid-type renewable energy power station is in a transient stable state, adjust the output power of the grid-type renewable energy power station.

[0098] Step S3: When the grid-connected renewable energy power station is in an off-grid state, perform black start control on the grid-connected renewable energy power station.

[0099] It is understandable that the transient stable state may be caused by oscillations or by external faults occurring at grid-connected renewable energy power plants. Similarly, the disconnection state may be caused by the transient stable state or by external faults occurring at grid-connected renewable energy power plants; this application does not limit the specific scenario.

[0100] Furthermore, the cooperative defense method may also include suppressing oscillations (which may be broadband oscillations, etc.) according to the following process: If a grid-type renewable energy power station experiences oscillations, the oscillation damping ratio is calculated based on the oscillation information.

[0101] If the oscillation damping ratio does not exceed the preset damping ratio threshold, at least one of the following measures shall be taken to suppress the oscillation: (1) Adjust the operating conditions of heterogeneous equipment (converters or SVG, etc.) in grid-type new energy power stations.

[0102] (2) Switch heterogeneous devices from network-type mode / follow-network-type mode to follow-network-type mode / network-type mode.

[0103] (3) Locate the oscillation source based on the oscillation information and cut off the oscillation source.

[0104] After an oscillation event occurs within the station, the first step is to determine whether the broadband oscillation meets the conditions for rapid quelling. The second step is to adjust the operating conditions of the equipment. Then, the oscillation is suppressed by switching the control mode of the network. If the above measures fail to effectively suppress the oscillation, the oscillation source is located and isolated to ensure the safe operation of the station.

[0105] In some possible implementations, the above S1 provides autonomous defense against oscillation risk, such as... Figure 2 As shown, it may include: S11: Based on the operation data of the grid-type new energy power station, the parameters of the pre-constructed impedance sweep frequency model are identified, and the dominant mode of the grid-type new energy power station is calculated based on the identification results.

[0106] S12: The oscillation damping margin is evaluated based on the dominant mode of the grid-type new energy power station, and the oscillation damping improvement of the grid-type power station is obtained.

[0107] S13: Based on the damping adjustment sensitivity, operating conditions, and topology of heterogeneous equipment in grid-type new energy power stations, determine the target value of damping adjustment for heterogeneous equipment by increasing the oscillation damping of the grid-type power station.

[0108] S14: Send the damping adjustment target value of the heterogeneous equipment to the heterogeneous equipment.

[0109] As can be seen, the embodiments of this application employ damping mutual assistance technology in the process of autonomously defending against oscillation risks, which enables proactive defense against oscillation risks.

[0110] In some other possible implementations, step S2 involves adjusting the output power of the grid-connected renewable energy power station, such as... Figure 3 As shown, it may include: S21: Calculate the power regulation limit of the grid-type new energy power station based on the output of heterogeneous equipment in the grid-type new energy power station.

[0111] S22: Calculate the overall adjustment capability of heterogeneous equipment based on the rated power of the heterogeneous equipment.

[0112] S23: Calculate the response efficiency of heterogeneous devices based on their actual response time.

[0113] S24: Calculate the power allocation weight based on the comprehensive adjustment capability and response efficiency of heterogeneous equipment.

[0114] S25: Multiply the power allocation weight by the adjustable power limit of the grid-type new energy power station to obtain the power regulation command value of the heterogeneous equipment.

[0115] S26: Send the power adjustment command value of the heterogeneous device to the heterogeneous device.

[0116] Optionally, the power regulation capacity of grid-connected renewable energy power stations meets the following requirements:

[0117] in, This indicates the active power regulation limit for grid-type renewable energy power plants. This indicates the reactive power regulation limit for grid-connected renewable energy power plants. This represents the active power command value issued by the power grid dispatch center. This represents the reactive power command value issued by the power grid dispatch center. Indicating the first in grid-type new energy power stations i The active power output of the heterogeneous equipment in Taiwan Indicates the first i The reactive power output of the heterogeneous equipment in Taiwan n This indicates the number of heterogeneous devices.

[0118] The integrated adjustment capability of heterogeneous equipment meets the following requirements:

[0119] in, This indicates the overall adjustment capability of heterogeneous equipment. This indicates the active power regulation capability of heterogeneous equipment. This indicates the reactive power regulation capability of heterogeneous equipment. Indicates the rated active power of heterogeneous equipment. Indicates the rated reactive power of heterogeneous equipment. This represents the first weighting coefficient. This represents the second weighting coefficient.

[0120] The heterogeneous equipment is a grid-connected device, and its active power regulation and reactive power regulation capabilities meet the following requirements:

[0121]

[0122] in, This indicates the active power regulation capability of the network-type equipment. This indicates the reactive power regulation capability of the network-type equipment. This indicates the active power regulation capability of the network-type equipment. This represents the actual value of the active power output by the network-connected equipment. This represents the actual value of the active power output of the network-connected device. This indicates the rated apparent power of the network-type equipment. This indicates the ramp rate of the network-type equipment. This indicates the control cycle of the network-type equipment.

[0123] The heterogeneous equipment is grid-connected equipment. The active power upward regulation capability, active power downward regulation capability, and reactive power regulation capability of the grid-connected equipment meet the following requirements:

[0124]

[0125]

[0126] in, This indicates the active power upscaling capability of grid-type equipment. This indicates the active power downward regulation capability of grid-type equipment. This indicates the reactive power regulation capability of grid-type equipment. Indicates the maximum allowable output power of the network-type equipment. This represents the actual value of the active power output of the network-type equipment. This represents the actual value of the reactive power output of the network-type equipment. Indicates the overload factor of the network-type equipment. Indicates the rated active power of grid-type equipment. Indicates the rated apparent power of the network-type equipment. This indicates the thermal stability reactive power limit for grid-type equipment.

[0127] This represents the discharge constraint function for grid-type energy storage devices in a grid-type renewable energy power station. The charging constraint function for grid-connected energy storage devices satisfies:

[0128]

[0129] in, This indicates the maximum allowable discharge power of the grid-type energy storage device. This indicates the maximum allowable charging power of grid-type energy storage devices. This indicates the actual state of charge of grid-connected energy storage devices. This indicates the reference state of charge of grid-connected energy storage devices. This indicates the upper limit of the state of charge of grid-type energy storage devices. This indicates the state of charge limit of grid-type energy storage devices.

[0130] For example, the response efficiency of heterogeneous devices satisfies:

[0131] in, This indicates the response efficiency of heterogeneous devices. This indicates the speed adjustment coefficient for heterogeneous equipment. This indicates the precision adjustment coefficient for heterogeneous devices. This indicates the actual response time of heterogeneous devices. This indicates the error ratio of heterogeneous devices.

[0132] Power allocation weights satisfy:

[0133] in, Indicates the first i Power allocation weights for heterogeneous devices. Indicates the first i The integrated adjustment capability of the heterogeneous equipment in Taiwan Indicates the first i Response efficiency of heterogeneous devices. n This indicates the number of heterogeneous devices.

[0134] In some other possible implementations, step S3 involves black-start control of the grid-connected renewable energy power station, such as... Figure 4 As shown, it includes: Step S31: Start the black start power supply (such as energy storage device) according to the preset black start initial strategy.

[0135] Step S32: If the black boot power supply starts successfully, proceed to step S33; otherwise, modify the initial black boot strategy and restart the black boot power supply.

[0136] Step S33: Connect the power generation units in the grid-connected new energy power station one by one to the grid-connected new energy power station, and verify the power generation units.

[0137] Step S34: With all power generation units connected and operating normally, the grid-connected new energy power station is connected to the main grid in an islanded form, gradually increasing the output power of the grid-connected new energy power station to ensure its normal operation.

[0138] Optionally, step S43 involves verifying the power generation unit, including: The excitation current, charging overvoltage, and self-excited oscillation of the power generation unit are verified. If the verification is successful, the next power generation unit is connected. If the verification fails, the startup path of the power generation unit is modified according to the preset coordination strategy, and the next power generation unit is started according to the startup path.

[0139] Example 2: Based on the same inventive concept, this application also provides a grid-type collaborative defense device for new energy power stations. For example... Figure 5 As shown, the cooperative defense device 200 includes: The active defense module 201 is used to autonomously defend against oscillation risks when the grid-type new energy power station is in a dynamically stable state.

[0140] The adjustment module 202 is used to adjust the output power of the grid-type renewable energy power station when the grid-type renewable energy power station is in a transient stable state.

[0141] The control module 203 is used to perform black start control on the grid-connected new energy power station when it is in an off-grid state.

[0142] Furthermore, the coordinated control device also includes a suppression module, which is specifically used for: If a grid-type renewable energy power station experiences oscillations, the oscillation damping ratio is calculated based on the oscillation information.

[0143] If the oscillation damping ratio does not exceed the preset damping ratio threshold, at least one of the following measures shall be taken to suppress the oscillation: (1) Adjust the operating conditions of heterogeneous equipment in grid-type new energy power stations.

[0144] (2) Switch heterogeneous devices from network-type mode / follow-network-type mode to follow-network-type mode / network-type mode.

[0145] (3) Locate the oscillation source based on the oscillation information and cut off the oscillation source.

[0146] In some possible implementations, the proactive defense module 201 is specifically used for: Based on the operational data of grid-type renewable energy power plants, the parameters of a pre-constructed impedance sweep frequency model are identified, and the dominant modes of the grid-type renewable energy power plants are calculated based on the identification results.

[0147] The oscillation damping margin is evaluated based on the dominant mode of the grid-type renewable energy power station, and the oscillation damping improvement of the grid-type power station is obtained.

[0148] Based on the damping adjustment sensitivity, operating conditions, and topology of heterogeneous equipment in grid-type renewable energy power plants, the target value of damping adjustment for heterogeneous equipment is determined by the oscillation damping increase of the grid-type power plant.

[0149] The damping adjustment target value of the heterogeneous equipment is sent to the heterogeneous equipment.

[0150] In some other possible implementations, the adjustment module 202 is specifically used for: The power regulation capacity of a grid-type renewable energy power station is calculated based on the output of heterogeneous equipment in the grid-type renewable energy power station.

[0151] Calculate the overall regulation capability of heterogeneous equipment based on its rated power.

[0152] The response efficiency of heterogeneous devices is calculated based on their actual response time.

[0153] The power allocation weight is calculated based on the overall adjustment capability and response efficiency of the heterogeneous equipment.

[0154] The power allocation weight is multiplied by the adjustable power limit of the grid-type new energy power station to obtain the power regulation command value of the heterogeneous equipment.

[0155] Send the power adjustment command value of the heterogeneous device to the heterogeneous device.

[0156] Optionally, the power regulation capacity of grid-connected renewable energy power stations meets the following requirements:

[0157] in, This indicates the active power regulation limit for grid-type renewable energy power plants. This indicates the reactive power regulation limit for grid-connected renewable energy power plants. This represents the active power command value issued by the power grid dispatch center. This represents the reactive power command value issued by the power grid dispatch center. Indicating the first in grid-type new energy power stationsi The active power output of the heterogeneous equipment in Taiwan Indicates the first i The reactive power output of the heterogeneous equipment in Taiwan n This indicates the number of heterogeneous devices.

[0158] The integrated adjustment capability of heterogeneous equipment meets the following requirements:

[0159] in, This indicates the overall adjustment capability of heterogeneous equipment. This indicates the active power regulation capability of heterogeneous equipment. This indicates the reactive power regulation capability of heterogeneous equipment. Indicates the rated active power of heterogeneous equipment. Indicates the rated reactive power of heterogeneous equipment. This represents the first weighting coefficient. This represents the second weighting coefficient.

[0160] The heterogeneous equipment is a grid-connected device, and its active power regulation and reactive power regulation capabilities meet the following requirements:

[0161]

[0162] in, This indicates the active power regulation capability of the network-type equipment. This indicates the reactive power regulation capability of the network-type equipment. This indicates the active power regulation capability of the network-type equipment. This represents the actual value of the active power output by the network-connected equipment. This represents the actual value of the active power output of the network-connected device. This indicates the rated apparent power of the network-type equipment. This indicates the ramp rate of the network-type equipment. This indicates the control cycle of the network-type equipment.

[0163] The heterogeneous equipment is grid-connected equipment. The active power upward regulation capability, active power downward regulation capability, and reactive power regulation capability of the grid-connected equipment meet the following requirements:

[0164]

[0165]

[0166] in, This indicates the active power upscaling capability of grid-type equipment. This indicates the active power downward regulation capability of grid-type equipment. This indicates the reactive power regulation capability of grid-type equipment. Indicates the maximum allowable output power of the network-type equipment. This represents the actual value of the active power output of the network-type equipment. This represents the actual value of the reactive power output of the network-type equipment. Indicates the overload factor of the network-type equipment. Indicates the rated active power of grid-type equipment. Indicates the rated apparent power of the network-type equipment. This indicates the thermal stability reactive power limit for grid-type equipment.

[0167] This represents the discharge constraint function for grid-type energy storage devices in a grid-type renewable energy power station. The charging constraint function for grid-connected energy storage devices satisfies:

[0168]

[0169] in, This indicates the maximum allowable discharge power of the grid-type energy storage device. This indicates the maximum allowable charging power of grid-type energy storage devices. This indicates the actual state of charge of grid-connected energy storage devices. This indicates the reference state of charge of grid-connected energy storage devices. This indicates the upper limit of the state of charge of grid-type energy storage devices. This indicates the state of charge limit of grid-type energy storage devices.

[0170] The response efficiency of heterogeneous devices meets the following requirements:

[0171] in, This indicates the response efficiency of heterogeneous devices. This indicates the speed adjustment coefficient for heterogeneous equipment. This indicates the precision adjustment coefficient for heterogeneous devices. This indicates the actual response time of heterogeneous devices. This indicates the error ratio of heterogeneous devices.

[0172] Power allocation weights satisfy:

[0173] in, Indicates the first i Power allocation weights for heterogeneous devices. Indicates the first iThe integrated adjustment capability of the heterogeneous equipment in Taiwan Indicates the first i Response efficiency of heterogeneous devices. n This indicates the number of heterogeneous devices.

[0174] In some other possible implementations, the control module 203 is specifically used for: The black boot power supply is started according to the preset black boot initial strategy.

[0175] If the black-start power supply starts successfully, the power generation units within the grid-connected renewable energy power station will be connected to the station one by one, and the power generation units will be verified. Otherwise, the initial black-start strategy will be modified, and the black-start power supply will be restarted.

[0176] With all power generation units connected and operating normally, grid-connected renewable energy power plants are integrated into the main power grid in an islanded manner, gradually increasing the output power of grid-connected renewable energy power plants and enabling them to operate normally.

[0177] Furthermore, the control module 203 is specifically used for: The excitation current, charging overvoltage, and self-excited oscillation of the power generation unit are verified. If the verification is successful, the next power generation unit is connected. If the verification fails, the startup path of the power generation unit is modified through a preset coordination strategy, and the next power generation unit is started according to the startup path.

[0178] Example 3: Based on the same inventive concept, this application also provides a computer device, which includes a processor and a memory. The memory stores a computer program, which includes program instructions. The processor executes the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing and control core of the terminal, and is suitable for implementing one or more instructions. Specifically, it is suitable for loading and executing one or more instructions in the computer storage medium to implement the corresponding method flow or corresponding function, so as to realize the steps of the collaborative defense method provided in the above embodiments.

[0179] Example 4: Based on the same inventive concept, this application also provides a computer-readable storage medium, specifically a computer-readable storage medium (Memory). A computer-readable storage medium is a memory device in a computer device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and extended storage media supported by the computer device. The computer-readable storage medium provides storage space that stores the terminal's operating system. Furthermore, this storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be high-speed RAM or non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the steps of the cooperative defense method provided in the above embodiments.

[0180] Those skilled in the art will understand that the embodiments of the application can be provided as a method, system, or computer program product. Therefore, the application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0181] The application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0182] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1The function specified in one or more boxes.

[0183] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0184] The above are merely examples of the application and are not intended to limit the application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application shall be included within the scope of the claims of the pending application.

Claims

1. A collaborative defense method for grid-type renewable energy power stations, characterized in that, include: Under the condition that the grid-type new energy power station is in a dynamic and stable state, it can autonomously defend against the risk of oscillation; When the grid-type renewable energy power station is in a transient stable state, the output power of the grid-type renewable energy power station is adjusted; When the grid-connected renewable energy power station is in an off-grid state, black start control is performed on the grid-connected renewable energy power station.

2. The cooperative defense method according to claim 1, characterized in that, The aforementioned autonomous defense against oscillation risk includes: Based on the operating data of the grid-type new energy power station, the parameters of the pre-constructed impedance sweep frequency model are identified, and the dominant mode of the grid-type new energy power station is calculated based on the identification results. The oscillation damping margin is evaluated based on the dominant mode of the grid-type new energy power station to obtain the oscillation damping improvement of the grid-type power station; Based on the damping adjustment sensitivity, operating conditions, and topology of the heterogeneous equipment in the grid-type new energy power station, the target value of damping adjustment for the heterogeneous equipment is determined by the oscillation damping increase of the grid-type power station. The damping adjustment target value of the heterogeneous device is sent to the heterogeneous device.

3. The cooperative defense method according to claim 1, characterized in that, The collaborative defense method also includes: If the grid-type renewable energy power station experiences oscillation, the oscillation damping ratio is calculated based on the oscillation information. If the oscillation damping ratio does not exceed a preset damping ratio threshold, at least one of the following measures shall be taken to suppress the oscillation: (1) Adjust the operating conditions of heterogeneous equipment in the grid-type new energy power station; (2) Switch the heterogeneous device from network-based mode / follow-the-network mode to follow-the-network mode / network-based mode; (3) Locate the oscillation source based on the oscillation information and cut off the oscillation source.

4. The cooperative defense method according to claim 1, characterized in that, The adjustment of the output power of the grid-type renewable energy power station includes: The power regulation capacity of the grid-type new energy power station is calculated based on the output of the heterogeneous equipment in the grid-type new energy power station. Calculate the overall regulation capability of the heterogeneous equipment based on its rated power. Calculate the response efficiency of the heterogeneous device based on its actual response time. The power allocation weight is calculated based on the comprehensive adjustment capability and response efficiency of the heterogeneous devices. The power allocation weight is multiplied by the adjustable power limit of the grid-type new energy power station to obtain the power adjustment command value of the heterogeneous equipment; The power adjustment command value of the heterogeneous device is sent to the heterogeneous device.

5. The cooperative defense method according to claim 4, characterized in that, The power regulation capacity of the grid-type renewable energy power stations meets the following requirements: in, This indicates the active power regulation limit of the grid-type renewable energy power station. This indicates the reactive power regulation limit of the grid-type renewable energy power station. This represents the active power command value issued by the power grid dispatch center. This represents the reactive power command value issued by the power grid dispatch center. Indicating the first in the grid-type new energy power station i The active power output of the heterogeneous equipment in Taiwan Indicates the first i The reactive power output of the heterogeneous equipment in Taiwan n This indicates the number of heterogeneous devices.

6. The cooperative defense method according to claim 4, characterized in that, The overall adjustment capability of the heterogeneous equipment meets the following requirements: in, This indicates the overall adjustment capability of the heterogeneous equipment. This indicates the active power regulation capability of the heterogeneous equipment. This indicates the reactive power regulation capability of the heterogeneous equipment. This indicates the rated active power of the heterogeneous equipment. This indicates the rated reactive power of the heterogeneous equipment. This represents the first weighting coefficient. This represents the second weighting coefficient.

7. The cooperative defense method according to claim 6, characterized in that, The heterogeneous equipment is a grid-connected equipment, and the active power regulation capability and reactive power regulation capability of the grid-connected equipment meet the following requirements: in, This indicates the active power regulation capability of the network-connected equipment. This indicates the reactive power regulation capability of the grid-connected equipment; This indicates the active power regulation capability of the network-connected equipment; This represents the actual value of the active power output by the network-connected device. This represents the actual value of the active power output of the network-connected device. This indicates the rated apparent power of the network-connected device. This indicates the ramp rate of the aforementioned network-type equipment. This indicates the control cycle of the network-type device.

8. The cooperative defense method according to claim 6, characterized in that, The heterogeneous equipment is a grid-connected device, and its active power upward regulation capability, active power downward regulation capability, and reactive power regulation capability satisfy the following: in, This indicates the active power upscaling capability of the network-type equipment. This indicates the active power downward adjustment capability of the network-type equipment. This indicates the reactive power regulation capability of the network-type equipment; This indicates the maximum allowable output power of the network-type device. This represents the actual value of the active power output of the network-type equipment. This represents the actual value of the reactive power output of the network-type equipment. This represents the overload coefficient of the network-type equipment. This indicates the rated active power of the network-type equipment. This indicates the rated apparent power of the network-type equipment. This indicates the thermal stability reactive power limit of the network-type equipment; This represents the discharge constraint function of the grid-type energy storage device in the grid-type new energy power station. The charging constraint function of the grid-type energy storage device satisfies: in, This indicates the maximum allowable discharge power of the grid-type energy storage device. This indicates the maximum allowable charging power of the grid-type energy storage device. This indicates the actual state of charge of the grid-type energy storage device. This indicates the reference state of charge of the grid-type energy storage device. This indicates the upper limit of the state of charge of the grid-type energy storage device. This indicates the state of charge limit of the grid-type energy storage device.

9. The cooperative defense method according to claim 4, characterized in that, The response efficiency of the heterogeneous device satisfies: in, This indicates the response efficiency of the heterogeneous device. This represents the speed adjustment coefficient of the heterogeneous device. This represents the precision adjustment coefficient of the heterogeneous device. This indicates the actual response time of the heterogeneous device. This indicates the error ratio of the heterogeneous devices.

10. The cooperative defense method according to claim 4, characterized in that, The power allocation weights satisfy: in, Indicates the first i Power allocation weights for heterogeneous devices. Indicates the first i The integrated adjustment capability of the heterogeneous equipment in Taiwan Indicates the first i Response efficiency of heterogeneous devices. n This indicates the number of heterogeneous devices.

11. The cooperative defense method according to claim 1, characterized in that, The black start control of the grid-type renewable energy power station includes: The black boot power supply is started according to the preset black boot initial strategy; If the black-start power supply starts successfully, the power generation units in the grid-connected new energy power station will be connected to the grid-connected new energy power station one by one, and the power generation units will be verified; otherwise, the black-start initial strategy will be modified, and the black-start power supply will be restarted. With all power generation units connected and operating normally, the grid-connected new energy power station is connected to the main power grid in an islanded manner, gradually increasing the output power of the grid-connected new energy power station and enabling it to operate normally.

12. The cooperative defense method according to claim 11, characterized in that, The verification of the power generation unit includes: The excitation current, charging overvoltage, and self-excited oscillation of the power generation unit are verified. If the verification is successful, the next power generation unit is connected. If the verification fails, the startup path of the power generation unit is modified according to the preset coordination strategy, and the next power generation unit is started according to the startup path.

13. A grid-type collaborative defense device for new energy power stations, characterized in that, include: The active defense module is used to autonomously defend against oscillation risks when the grid-type renewable energy power station is in a dynamically stable state. The adjustment module is used to adjust the output power of the grid-type renewable energy power station when the grid-type renewable energy power station is in a transient stable state; The control module is used to perform black start control on the grid-connected new energy power station when it is in an off-grid state.

14. The cooperative defense device according to claim 13, characterized in that, The active defense module is specifically used for: Based on the operating data of the grid-type new energy power station, the parameters of the pre-constructed impedance sweep frequency model are identified, and the dominant mode of the grid-type new energy power station is calculated based on the identification results. The oscillation damping margin is evaluated based on the dominant mode of the grid-type new energy power station to obtain the oscillation damping improvement of the grid-type power station; Based on the damping adjustment sensitivity, operating conditions, and topology of the heterogeneous equipment in the grid-type new energy power station, the target value of damping adjustment for the heterogeneous equipment is determined by the oscillation damping increase of the grid-type power station. The damping adjustment target value of the heterogeneous device is sent to the heterogeneous device.

15. The cooperative defense device according to claim 13, characterized in that, The collaborative control device further includes a suppression module, which is specifically used for: If the grid-type renewable energy power station experiences oscillation, the oscillation damping ratio is calculated based on the oscillation information. If the oscillation damping ratio does not exceed a preset damping ratio threshold, at least one of the following measures shall be taken to suppress the oscillation: (1) Adjust the operating conditions of heterogeneous equipment in the grid-type new energy power station; (2) Switch the heterogeneous device from network-based mode / follow-the-network mode to follow-the-network mode / network-based mode; (3) Locate the oscillation source based on the oscillation information and cut off the oscillation source.

16. The cooperative defense device according to claim 13, characterized in that, The adjustment module is specifically used for: The power regulation capacity of the grid-type new energy power station is calculated based on the output of the heterogeneous equipment in the grid-type new energy power station. Calculate the overall regulation capability of the heterogeneous equipment based on its rated power. Calculate the response efficiency of the heterogeneous device based on its actual response time. The power allocation weight is calculated based on the comprehensive adjustment capability and response efficiency of the heterogeneous devices. The power allocation weight is multiplied by the adjustable power limit of the grid-type new energy power station to obtain the power adjustment command value of the heterogeneous equipment; The power adjustment command value of the heterogeneous device is sent to the heterogeneous device.

17. The cooperative defense device according to claim 16, characterized in that, The power regulation capacity of the grid-type renewable energy power stations meets the following requirements: in, This indicates the active power regulation limit of the grid-type renewable energy power station. This indicates the reactive power regulation limit of the grid-type renewable energy power station. This represents the active power command value issued by the power grid dispatch center. This represents the reactive power command value issued by the power grid dispatch center. Indicating the first in the grid-type new energy power station i The active power output of the heterogeneous equipment in Taiwan Indicates the first i The reactive power output of the heterogeneous equipment in Taiwan n This indicates the number of heterogeneous devices.

18. The cooperative defense device according to claim 16, characterized in that, The overall adjustment capability of the heterogeneous equipment meets the following requirements: in, This indicates the overall adjustment capability of the heterogeneous equipment. This indicates the active power regulation capability of the heterogeneous equipment. This indicates the reactive power regulation capability of the heterogeneous equipment. This indicates the rated active power of the heterogeneous equipment. This indicates the rated reactive power of the heterogeneous equipment. This represents the first weighting coefficient. This represents the second weighting coefficient.

19. The cooperative defense device according to claim 18, characterized in that, The heterogeneous equipment is a grid-connected equipment, and the active power regulation capability and reactive power regulation capability of the grid-connected equipment meet the following requirements: in, This indicates the active power regulation capability of the network-connected equipment. This indicates the reactive power regulation capability of the grid-connected equipment; This indicates the active power regulation capability of the network-connected equipment; This represents the actual value of the active power output by the network-connected device. This represents the actual value of the active power output of the network-connected device. This indicates the rated apparent power of the network-connected device. This indicates the ramp rate of the aforementioned network-type equipment. This indicates the control cycle of the network-type device.

20. The cooperative defense device according to claim 18, characterized in that, The heterogeneous equipment is a grid-connected device, and its active power upward regulation capability, active power downward regulation capability, and reactive power regulation capability satisfy the following: in, This indicates the active power upscaling capability of the network-type equipment. This indicates the active power downward adjustment capability of the network-type equipment. This indicates the reactive power regulation capability of the network-type equipment; This indicates the maximum allowable output power of the network-type device. This represents the actual value of the active power output of the network-type equipment. This represents the actual value of the reactive power output of the network-type equipment. This represents the overload coefficient of the network-type equipment. This indicates the rated active power of the network-type equipment. This indicates the rated apparent power of the network-type equipment. This indicates the thermal stability reactive power limit of the network-type equipment; This represents the discharge constraint function of the grid-type energy storage device in the grid-type new energy power station. The charging constraint function of the grid-type energy storage device satisfies: in, This indicates the maximum allowable discharge power of the grid-type energy storage device. This indicates the maximum allowable charging power of the grid-type energy storage device. This indicates the actual state of charge of the grid-type energy storage device. This indicates the reference state of charge of the grid-type energy storage device. This indicates the upper limit of the state of charge of the grid-type energy storage device. This indicates the state of charge limit of the grid-type energy storage device.

21. The cooperative defense device according to claim 16, characterized in that, The response efficiency of the heterogeneous device satisfies: in, This indicates the response efficiency of the heterogeneous device. This represents the speed adjustment coefficient of the heterogeneous device. This represents the precision adjustment coefficient of the heterogeneous device. This indicates the actual response time of the heterogeneous device. This indicates the error ratio of the heterogeneous devices.

22. The cooperative defense device according to claim 16, characterized in that, The power allocation weights satisfy: in, Indicates the first i Power allocation weights for heterogeneous devices. Indicates the first i The integrated adjustment capability of the heterogeneous equipment in Taiwan Indicates the first i Response efficiency of heterogeneous devices. n This indicates the number of heterogeneous devices.

23. The cooperative defense device according to claim 13, characterized in that, The control module is specifically used for: The black boot power supply is started according to the preset black boot initial strategy; If the black-start power supply starts successfully, the power generation units in the grid-connected new energy power station will be connected to the grid-connected new energy power station one by one, and the power generation units will be verified; otherwise, the black-start initial strategy will be modified, and the black-start power supply will be restarted. With all power generation units connected and operating normally, the grid-connected new energy power station is connected to the main power grid in an islanded manner, gradually increasing the output power of the grid-connected new energy power station and enabling it to operate normally.

24. The cooperative defense device according to claim 23, characterized in that, The control module is specifically used for: The excitation current, charging overvoltage, and self-excited oscillation of the power generation unit are verified. If the verification is successful, the next power generation unit is connected. If the verification fails, the startup path of the power generation unit is modified according to the preset coordination strategy, and the next power generation unit is started according to the startup path.

25. A computer device, characterized in that, include: One or more processors; The processor is used to store one or more programs; When the one or more programs are executed by the one or more processors, the collaborative defense method as described in any one of claims 1 to 12 is implemented.

26. A computer-readable storage medium, characterized in that, It contains a computer program, which, when executed, implements the collaborative defense method as described in any one of claims 1 to 12.

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