CN112701698B - Fan transient frequency active supporting method and system for dealing with power grid fault and storage medium - Google Patents
Fan transient frequency active supporting method and system for dealing with power grid fault and storage medium Download PDFInfo
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Abstract
The invention discloses a fan transient frequency active supporting method, a system and a storage medium for dealing with power grid faults, wherein the method comprises the following steps: detecting frequency state information of a power grid, and starting a fan transient frequency active support when the detected frequency deviation exceeds a set threshold; calculating the unbalanced power born by the power grid according to the system frequency change rate; predicting the maximum frequency deviation which can be reached by the system based on the unbalanced power quantity borne by the power grid; when the predicted maximum frequency deviation exceeds a set threshold value, inquiring a control strategy table, and matching the active supporting power of each wind power plant by the control strategy table according to the system state information; responding to the active supporting power of each wind power station, and sending an emergency control power command to each fan in the wind power station to complete the active supporting of the transient frequency of the fan. The transient frequency active support of the fan improves the frequency safety and stability level of a new energy high-occupancy-ratio power grid.
Description
Technical Field
The invention relates to the technical field of power systems and automation thereof, in particular to a method and a system for actively supporting transient frequency of a fan in response to power grid faults and a storage medium.
Background
In order to realize the energy development strategy of the country, new energy power generation is continuously and rapidly developed in recent years, particularly in the 'three north areas' of China, and due to the fact that new energy resources are rich and the occupation ratio of the new energy power generation is high, the new energy power generation plays an important role in energy conservation and emission reduction of the country. Wind power generation is connected to a power grid through a power electronic device interface, and compared with a traditional synchronous generator, the wind power generation has smaller inertia and does not participate in primary frequency modulation of the power grid at present, so that the frequency safety and stability level of the power grid is reduced along with the rapid development of new energy power generation such as wind power generation and the like. At present, the problem of frequency safety and stability after power grid failure is solved by a stability control system, such as a direct current matching stability control system for solving high-capacity direct current blocking. However, for a new energy high-occupancy power grid, except for a deterministic direct-current fault, a power grid large-frequency-difference disturbance event is often caused by new energy disorderly grid disconnection or large-scale fault ride-through, generally occurs after the power grid passes through a complex cascading fault event, and is difficult to defend comprehensively only by an emergency control system based on event triggering, and frequency active support capacity construction based on power grid frequency response needs to be strengthened. The measures based on frequency response control mainly comprise primary frequency modulation, low-frequency load shedding, high-frequency generator tripping and the like of the power grid, the measures depend on local frequency information of a unit or a control device for control, other running state information of the power grid, such as weak section power, key node voltage and the like, cannot be considered, and the risk of power grid cascading instability is easily caused under extreme conditions.
Disclosure of Invention
The invention aims to provide a method, a system and a storage medium for actively supporting transient state frequency of a fan for dealing with power grid faults, which can effectively deal with large frequency difference disturbance risks under power grid cascading faults and are beneficial to improving the safe and stable operation level of a new energy high-occupancy power grid.
The invention adopts the following technical scheme for realizing the aim of the invention:
the invention provides a fan transient frequency active supporting method for dealing with power grid faults, which comprises the following steps:
detecting frequency state information of a power grid, and starting a fan transient frequency active support when the detected frequency deviation exceeds a set threshold;
calculating unbalanced power borne by the power grid according to the system frequency change rate;
predicting the maximum frequency deviation which can be reached by the system based on the unbalanced power quantity borne by the power grid;
when the predicted maximum frequency deviation exceeds a set threshold value, inquiring a control strategy table, and matching the active supporting power of each wind power plant by the control strategy table according to the system state information;
responding to the active support power of each wind power plant, and sending an emergency control power command to each fan in the wind power plant to complete the active support of the transient frequency of the fan.
Further, the method for starting the active support of the transient frequency of the wind turbine comprises the following steps:
detecting frequency delta f according to bus voltage phase angle of transformer substation where fan transient frequency active support substation is located i Wherein i is 1,2,3, … N, N is the total number of fan transient active support substations;
note Δ f 0 ＝max{|Δf 1 |,|Δf 2 |,…,|Δf N |}，Δf 0 Actively supporting a main station for the transient frequency of the fan according to the received frequency deviation signals of each substation;
when Δ f 0 ≥Δf th While, the fan transient frequency active support system is started, where Δ f th And starting a frequency deviation threshold value of the fan transient frequency active supporting system.
Further, the method for calculating the unbalanced power amount born by the power grid comprises the following steps:
acquiring monitoring frequency delta f of each main station and each substation with interval delta t time after fan transient frequency active support starting ti Wherein i is 1,2,3, … N, N is the total number of the master station and the sub-station, and the frequency change rate of different monitoring stations is calculated
Remember | Delta f' 0 |＝max{|Δf 1 ′|,|Δf′ 2 |,…,|Δf′ N The maximum frequency change rate of the system is calculated according to the public indication, and the unbalanced power born by the power grid is calculated
Wherein E MWS The sum of the kinetic energy of the generators of all the starting units in the power grid can be obtained through the online acquired unit running state;the unit of the delta P is MW, positive values of the delta P indicate that the power grid has surplus power generated, corresponding to the increase of the system frequency, negative values of the delta P indicate that the power grid has shortage of power generated, corresponding to the decrease of the system frequency.
Further, the method for predicting the maximum frequency deviation which can be achieved by the system comprises the following steps:
wherein K is the maximum regulating quantity of the primary frequency modulation, and K is P G K in MW, P G The rated capacity of the system equivalent single machine system is defined, and k is the maximum regulation proportion of the primary frequency modulation of the system equivalent single machine system; t is primary frequency modulation response time with the unit of s; l is the regulating coefficient of the load, and L is equal to K L *P L /(2πf N ) In the unit of MW, K L As a frequency response factor of the load, P L Is the current total load, f N Is a rated frequency of 50 Hz; m is system inertia, M is 6.37 x 10 -3 *E MWS In units of MW.s;
let Δ f' equal to 0, find the time t at which the derivative of Δ f is 0 max And then substituting the formula to obtain t max Time-corresponding maximum frequency deviation delta f of system max 。
Further, the control strategy table is formulated according to off-line time domain simulation calculation or on-line time domain simulation calculation.
Further, the information of the control strategy table includes the corresponding active supporting power quantity of each wind power plant participating in control when the power of the power transmission channel is monitored to be different values under different total kinetic energies of the system generators.
Further, the offline time domain simulation calculation is developed based on a typical operation mode of a power grid, and a fixed offline control strategy table is formulated;
and performing on-line time domain simulation calculation, performing rolling calculation according to the real-time operation mode of the power grid, and refreshing in real time according to the simulation calculation result to form an on-line control strategy table.
Further, the emergency control command comprises wind turbine generator power emergency lifting or speed reduction.
The invention provides a fan transient frequency active support system for dealing with power grid faults, which comprises a fan transient frequency active support main station, a fan transient frequency active support substation and a fan transient frequency active support execution station, wherein the fan transient frequency active support main station is connected with the fan transient frequency active support execution station;
the fan transient frequency active support master station is used for receiving frequency information sent by the fan transient frequency active support substation and controllable active power information of each wind power plant, acquiring and monitoring the line power of a key transmission section, and issuing an emergency control command to the corresponding fan transient frequency active support substation according to a control strategy table;
the fan transient frequency active support substation is used for receiving controllable active power information of each fan transient frequency active support execution station, receiving an emergency control command issued by the control master station and sending the emergency control command to each fan transient frequency active support execution station;
the fan transient frequency active support execution station is used for receiving controllable active power information of all fans in the wind field, gathering and sending the information to the fan transient frequency active support substation, receiving and executing an emergency control command issued by the control substation, and sending the emergency control power command to each fan in the wind field.
The invention provides a fan transient frequency active supporting system for dealing with power grid faults, which comprises a memory and a processor, wherein the memory is used for storing a plurality of fan transient frequency active supporting systems;
the memory is to store instructions;
the processor is configured to operate in accordance with the instructions to perform the steps according to the above-described method.
The invention provides a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
The invention has the following beneficial effects:
according to the invention, the frequency response of the power grid is utilized, the unbalanced power shortage borne by the system is estimated, the maximum frequency deviation possibly occurring in the power grid is predicted, and the frequency safety and stability level of the new energy high-occupancy ratio power grid is improved through the active support of the transient frequency of the fan.
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Fig. 1 is a block diagram of a charging system for charging a charging pile according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to specific examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In order to improve the frequency safety and stability characteristics of a new energy high-occupancy-ratio power grid, the method utilizes the frequency response of the power grid, estimates the unbalanced power shortage born by the system, predicts the maximum frequency deviation possibly occurring in the power grid, implements fan transient frequency active support, and avoids the power grid stability damage under large frequency difference disturbance.
The invention provides a fan transient frequency active supporting method for dealing with power grid faults, which comprises the following steps:
the fan transient frequency active support master station detects frequency state information of a power grid, and when the detected frequency deviation exceeds a set threshold value, fan transient frequency active support is started;
calculating the unbalanced power amount born by the power grid according to the system frequency change rate;
predicting the maximum frequency deviation Deltaf that the system may reach max ；
When predicted maximum frequency deviation Δ f max When the current exceeds a set threshold value (generally 0.5Hz in engineering), inquiring a control strategy table in a fan transient frequency active support main station, acquiring monitored key transmission section line power and controllable active power information of each wind power plant, matching the active support power of each wind power plant from the control strategy table, and sending the active support power to a fan transient frequency active support substation;
the fan transient frequency active support sub-station sends an emergency control command to the fan transient frequency active support execution station, and the execution station sends an emergency control power command to each fan in the wind field to complete the transient frequency active support.
The starting method of the fan transient frequency active supporting system comprises the following steps:
detecting frequency delta f according to bus voltage phase angle of transformer substation where fan transient frequency active support substation is located i (i is 1,2,3, … N, N is the total number of the active support substations of the fan transient state), and is recorded as delta f 0 ＝max{|Δf 1 |,|Δf 2 |,…,|Δf N I, actively supporting the master station by the transient frequency of the fan according to the received frequency deviation signals of the substations when the frequency is delta f 0 ≥Δf th While, the fan transient frequency active support system is started, where Δ f th In order to start the frequency deviation threshold value of the fan transient frequency active supporting system, the engineering can generally be 0.07 Hz-0.1 Hz.
The method for calculating the unbalanced power quantity born by the power grid comprises the following steps:
acquiring monitoring frequency delta f of each main station and each sub-station at interval delta t (generally 40-100 ms in engineering) after the fan transient frequency active support system is started ti (i 1,2,3, … N), calculating frequency change rate of different monitored stations
Remember | Delta f' 0 |＝max{|Δf 1 ′|,|Δf′ 2 |,…,|Δf′ N The maximum frequency change rate of the system is calculated according to the public indication, and the unbalanced power born by the power grid is calculated
Wherein E MWS The unit of delta P is MW, the unit of delta P is a positive value which indicates that the power grid has surplus generated power and corresponds to the increase of system frequency, and the unit of delta P is a negative value which indicates that the power grid has shortage of generated power and corresponds to the decrease of system frequency.
The maximum frequency deviation that the computing system may achieve is as follows:
wherein K is the maximum adjustment of primary frequency modulation, and K is P G K in MW, P G The rated capacity of the system equivalent single machine system is defined, and k is the maximum regulation proportion of the primary frequency modulation of the system equivalent single machine system; t is primary frequency modulation response time, and the unit is s; l is the regulating coefficient of the load, and L is equal to K L *P L /(2πf N ) Unit MW, K L Is a frequency response factor, P, of the load L Is the current total load, f N Is a rated frequency of 50 Hz; m is system inertia, M is 6.37 x 10 -3 *E MWS And the unit is MW.s, and all parameters can be obtained by offline or online safety and stability calculation data of the power grid.
The time t at which the derivative of Δ f is 0 is obtained by setting Δ f' to 0 max Then substituting the formula to obtain t max Time-corresponding maximum frequency deviation delta f of system max 。
The power of the key transmission section line of the power grid is obtained through a wide area monitoring system in the power grid.
The emergency control command comprises the power emergency lifting or the speed reduction of the wind turbine generator.
The control strategy table is formulated according to off-line time domain simulation calculation or on-line time domain simulation calculation, and the information of the control strategy table comprises the corresponding active supporting power quantity of each wind power plant participating in control under the condition that the monitoring power transmission channel power is different in value.
The off-line time domain simulation calculation is carried out based on a typical operation mode of a power grid, and a fixed off-line control strategy table is formulated;
the online time domain simulation calculation is to perform rolling calculation according to the real-time operation mode of the power grid and refresh the rolling calculation in real time according to the simulation calculation result to form an online control strategy table;
when the online computing function is not available or the online time domain simulation computing function is unavailable, executing a control strategy by using a control strategy table obtained by offline time domain simulation; and when the online policy table refreshed in real time exists, executing the control policy according to the online policy table.
The invention provides a fan transient frequency active supporting system for dealing with power grid faults, which comprises:
the wind turbine transient frequency active support master station is used for receiving frequency information sent by the wind turbine transient frequency active support substation and controllable active power information of each wind power plant, acquiring and monitoring the line power of a key transmission section, and issuing an emergency control command to the corresponding wind turbine transient frequency active support substation according to a control strategy table;
the fan transient frequency active support substation is used for receiving the controllable active power information of each fan transient frequency active support execution station, receiving an emergency control command sent by the control master station and sending the emergency control command to each fan transient frequency active support execution station;
the fan transient frequency active support execution station is used for receiving controllable active power information of all fans in the wind farm, gathering and sending the information to the fan transient frequency active support substation, receiving and executing an emergency control command issued by the control substation, and sending the emergency control power command to each fan in the wind farm.
The embodiment provides a wind turbine transient frequency active supporting method for dealing with power grid faults. The active support of the transient frequency of the fan means that when the frequency fluctuates in a large range due to power grid disturbance, the active support system of the transient frequency of the fan estimates the unbalance power shortage born by the system according to the frequency response information of the power grid, predicts the maximum frequency deviation possibly occurring in the power grid, and implements the active support of the transient frequency of the fan to enable the frequency of the power grid to be restored to the normal range as soon as possible.
The active support system for the transient frequency of the fan for dealing with the power grid fault comprises a fan transient frequency active support main station, a fan transient frequency active support sub-station and a fan transient frequency active support execution station.
The active support substation for the transient frequency of the fan has the functions of monitoring the bus frequency information of a transformer substation where each substation is located, receiving the controllable active power information of each active support execution station for the transient frequency of the fan, sending the information to the emergency control master station, receiving the emergency control command sent by the control master station, and sending the emergency control command to each active support execution station for the transient frequency of the fan. A substation in the power grid control system can be used as a fan transient frequency active support substation. When the system frequency fluctuates in a large range under the disturbance of a power grid, the fan transient frequency active support substation can send frequency information to a fan transient frequency active support main station in a power grid control system through a high-speed digital communication network based on optical fibers. The transmission capability of the high-speed digital communication network should be not less than 1Mbps, so that the frequency information and the controllable active power information of each fan transient frequency active support execution station can be quickly and stably transmitted to the fan transient frequency active support master station.
And the fan transient frequency active support master station is used for receiving the frequency information sent by the fan transient frequency active support substation and the controllable active power information of each wind power plant, acquiring and monitoring the line power of the key transmission section, and issuing an emergency control command to the corresponding fan transient frequency active support substation according to the control strategy table.
The power information of the key transmission section line of the power grid is acquired by a WAMS (Wide Area Measurement System) System. The emergency control master station and the main network regulation and control center WAMS system adopt the same time setting source so as to conveniently identify the information acquisition time.
And the control strategy table is formulated according to off-line time domain simulation calculation or on-line time domain simulation calculation, and the information of the control strategy table comprises the corresponding active supporting power quantity of each controlled wind power plant when the power of the monitoring power transmission channel is different values under different system generator total kinetic energies. Performing offline time domain simulation calculation based on a typical operation mode of a power grid, and making a fixed offline control strategy table; the online time domain simulation calculation is to perform rolling calculation according to the real-time operation mode of the power grid and refresh the rolling calculation in real time according to the simulation calculation result to form an online control strategy table; when the online computing function is unavailable or the online time domain simulation computing function is unavailable, executing a control strategy by using a control strategy table obtained by offline time domain simulation; and when the online policy table refreshed in real time exists, executing the control policy according to the online policy table.
The implementation process of this embodiment is shown in fig. 1, that is, the wind turbine transient frequency active support substation detects frequency state information of the power grid, and starts the wind turbine transient frequency active support when the detected frequency deviation exceeds a set threshold; calculating the unbalanced power quantity borne by the power grid according to the system frequency change rate; predicting the maximum frequency deviation which can be reached by the system; when the predicted maximum frequency deviation exceeds a set threshold value, inquiring a control strategy table in a fan transient frequency active support master station, acquiring monitored key transmission section line power and controllable active power information of each wind power plant, matching the active support power of each wind power plant from the control strategy table, and sending the active support power to a fan transient frequency active support substation; and the fan transient frequency active support substation sends an emergency control power command to each fan in the field. The specific process of the present embodiment is described in further detail below.
Step 1 describes that when the frequency of the power grid fluctuates in a large range, the fan transient frequency active support substation detects frequency state information of the power grid and sends the frequency state information to the fan transient frequency active support main station, and when the detected frequency deviation exceeds a set threshold value, fan transient frequency active support is started.
Step 2 describes that the fan transient frequency active support master station calculates the unbalanced power borne by the power grid according to the system frequency change rate.
Step 3 describes the maximum frequency deviation which can be achieved by the wind turbine transient frequency active support master station prediction system.
Step 4 describes that when the predicted maximum frequency deviation exceeds a set threshold value, a control strategy table in the wind turbine transient frequency active support master station is inquired, monitored key transmission section line power and controllable active power information of each wind power plant are obtained, the active support power of each wind power plant is matched from the control strategy table, and the active support power is sent to the wind turbine transient frequency active support sub station. The key transmission section line power information can be acquired through a Wide Area Monitoring System (WAMS) System in the power grid.
And 5, the fan transient frequency active support substation sends an emergency control power command to each fan in the field, wherein the emergency control command comprises the emergency power increase or speed decrease of the wind turbine generator, and the method is ended.
The invention provides a fan transient frequency active supporting system for dealing with power grid faults, which can also be as follows: comprising a memory and a processor; the memory is to store instructions;
the processor is used for operating according to the instruction to execute the steps of the wind turbine transient frequency active support method for dealing with the power grid fault.
The invention also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the aforementioned method of active support of transient frequency of a wind turbine against a grid fault.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present 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 flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may 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, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A wind turbine transient frequency active supporting method for dealing with grid faults is characterized by comprising the following steps:
detecting frequency state information of a power grid, and starting a fan transient frequency active support when the detected frequency deviation exceeds a set threshold;
calculating unbalanced power borne by the power grid according to the system frequency change rate;
predicting the maximum frequency deviation which can be reached by the system based on the unbalanced power quantity born by the power grid;
when the predicted maximum frequency deviation exceeds a set threshold value, inquiring a control strategy table, and matching the active supporting power of each wind power plant by the control strategy table according to the system state information;
responding to the active supporting power of each wind power station, and sending an emergency control power command to each fan in the wind power station to complete the active supporting of the transient frequency of the fan;
the method for starting the active support of the transient frequency of the wind turbine comprises the following steps:
detecting frequency delta f according to bus voltage phase angle of transformer substation where fan transient frequency active support substation is located i Wherein i is 1,2,3, … N, N is the total number of fan transient active support substations;
note Δ f 0 ＝max{|Δf 1 |,|Δf 2 |,…,|Δf N |}，Δf 0 Actively supporting a main station for the transient frequency of the fan according to the received frequency deviation signals of each substation;
when Δ f 0 ≥Δf th While, the fan transient frequency active support system is started, where Δ f th A frequency deviation threshold for starting the fan transient frequency active support system;
the method for calculating the unbalanced power quantity born by the power grid comprises the following steps:
acquiring monitoring frequency delta f of each main station and each substation with interval delta t time after fan transient frequency active support starting ti Wherein i is 1,2,3, … N, N is the total number of the master station and the sub-station, and the frequency change rate of different monitoring stations is calculated
Remember | Delta f' 0 |＝max{|Δf 1 ′|,|Δf′ 2 |,…,|Δf′ N The maximum frequency change rate of the system is calculated according to the public indication, and the unbalanced power born by the power grid is calculated
Wherein E MWS The sum of the kinetic energy of the generators of all the starting units in the power grid can be obtained through the online acquired unit running state; the unit of the delta P is MW, the positive value of the delta P indicates that the power grid has power generation surplus and corresponds to system frequency increase, the negative value of the delta P indicates that the power grid has power generation shortage and corresponds to system frequency decrease;
the method for predicting the maximum frequency deviation which can be achieved by the system comprises the following steps:
wherein K is the maximum adjustment of primary frequency modulation, and K is P G K in MW, P G The rated capacity of the system equivalent single machine system is defined, and k is the maximum regulation proportion of the primary frequency modulation of the system equivalent single machine system; t is primary frequency modulation response time, and the unit is s; l is the regulating coefficient of the load, and L is equal to K L *P L /(2πf N ) Unit MW, K L Is a frequency response factor, P, of the load L Is the current total load, f N Is a rated frequency of 50 Hz; m is system inertia, M is 6.37 x 10 -3 *E MWS In units of MW.s;
let Δ f' equal to 0, find the time t at which the derivative of Δ f is 0 max Then substituting the formula to obtain t max Time-corresponding maximum frequency deviation delta f of system max 。
2. The active support method for transient frequency of wind turbine generator for handling grid faults of claim 1, wherein the control strategy table is formulated according to off-line time domain simulation calculation or on-line time domain simulation calculation.
3. The method of claim 1, wherein the information of the control strategy table includes active support power amounts of corresponding wind power plants participating in control when power of the power transmission channels is monitored to be different values under different total kinetic energies of the generators of the system.
4. The active support method for the transient frequency of the wind turbine coping with the grid fault according to claim 1, wherein the off-line time domain simulation calculation is developed based on a typical operation mode of a power grid, and a fixed off-line control strategy table is formulated; and performing online time domain simulation calculation, performing rolling calculation according to a real-time operation mode of the power grid, and refreshing in real time according to a simulation calculation result to form an online control strategy table.
5. The active wind turbine transient frequency support method for grid fault handling according to claim 1, wherein the emergency control power command comprises an emergency wind turbine power boost or speed droop.
6. A fan transient frequency active support system for dealing with grid faults is characterized by comprising a memory and a processor;
the memory is to store instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any one of claims 1 to 5.
7. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the steps of the method of any one of claims 1 to 5.
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| CN114362148B (en) * | 2021-12-15 | 2023-05-26 | 南瑞集团有限公司 | Emergency control method and device for coping with transient uncertainty of new energy |
| CN115313523B (en) * | 2022-07-12 | 2024-09-10 | 南瑞集团有限公司 | Frequency correction control strategy configuration method, system, storage medium and computing device |
| CN115986779B (en) * | 2023-03-21 | 2023-06-27 | 中国电力科学研究院有限公司 | Response-based frequency stability judging and controlling method and system |
| CN116093979B (en) * | 2023-04-10 | 2023-06-13 | 山东大学 | Wind power station frequency support control method and system based on PCC-COI frequency |
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| CN108493995A (en) * | 2018-03-29 | 2018-09-04 | 国电南瑞科技股份有限公司 | The emergency control system and method for low frequency after meter and the reply direct current locking of wind turbine frequency modulation |
| CN110611319A (en) * | 2019-07-17 | 2019-12-24 | 南瑞集团有限公司 | Receiving-end power grid low-frequency emergency control method, master station and storage medium thereof |
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