Primary frequency modulation control method for distribution, storage and power generation system of wind power plant

Abstract

The invention relates to the technical field of power system frequency modulation, and discloses a primary frequency modulation control method for a wind power plant distribution and storage power generation system, which comprises the following steps: acquiring secondary voltage and current signals of a wind power plant grid-connected point, calculating frequency and positive sequence voltage amplitude, and judging new energy station frequency modulation according to the frequency and the positive sequence voltage amplitude. Wind power plant distribution and storage power generation system frequency modulation is divided into wind power and energy storage system combined frequency modulation and independent frequency modulation. For joint frequency modulation, frequency modulation active power distribution is calculated according to the actual output active power of a wind turbine generator, the actual operation power of an energy storage system, the theoretical available active power of the wind turbine generator, the full discharge power of the energy storage system and the full charge power of the energy storage system, and finally, frequency modulation active power distribution is calculated according to the actual output active power of the wind turbine generator and the actual operation power of the energy storage system. Therefore, the electric energy loss of the wind power plant is reduced as much as possible, the distribution and storage effects of the wind power plant and the coordination between the two are brought into full play, and the utilization rate of the energy storage system participating in the power grid frequency adjustment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power system frequency regulation, and in particular to a primary frequency regulation control method for a wind farm storage power generation system. Background Art

[0002] The output of renewable energy power generation is characterized by intermittent, random, and highly volatile characteristics. At present, the renewable energy in the grid is basically fully absorbed, which puts higher requirements on the system regulation capacity. After large-scale access, the operating space of conventional adjustable energy is further squeezed, which brings huge challenges to the peak and frequency regulation of the system. In addition, the existing standards and specifications stipulate that newly built wind farms are equipped with electrochemical energy storage systems with a capacity ratio of 10%, but the coordination and cooperation between the two are not fully considered.

[0003] At present, there are no provisions for primary frequency regulation of wind farms equipped with storage power generation systems, and there is a lack of relevant standards and specifications; most of the existing literature focuses on the research of wind farms equipped with electrochemical energy storage systems to participate in the primary frequency regulation of the power grid, but most of them study how to use electrochemical energy storage systems to replace wind turbines to participate in frequency regulation. Some literature ignores the fact that the wind farm is not considered from the perspective of the wind farm, resulting in power loss in the wind farm. As well as the frequency regulation capabilities of wind turbines and energy storage systems required by existing standards, the mechanism for wind turbines and energy storage systems to participate in the frequency regulation auxiliary service market is not clear, and the power loss caused by frequency regulation reduces the income of wind farms.

[0004] Therefore, it is urgent to solve the shortcomings of the existing wind farm storage and power generation system in participating in the primary frequency regulation of the power grid, give full play to the coordination and cooperation role of the wind farm storage and power generation system, and improve the effect of primary frequency regulation. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, the present invention provides a primary frequency regulation control method for a wind farm storage power generation system, so as to improve the primary frequency regulation method of the existing wind farm storage power generation system and enhance the primary frequency regulation effect of the wind farm storage power generation system.

[0006] The technical solution adopted by the present invention is:

[0007] A primary frequency modulation control method for a wind farm storage power generation system comprises the following steps:

[0008] Step 1, system monitoring:

[0009] The frequency regulation system of the wind farm storage power generation system collects the secondary voltage of the wind farm grid connection point and calculates the frequency f and the positive sequence voltage amplitude U based on the secondary voltage;

[0010] Step 2, determine a frequency modulation action:

[0011] According to the frequency f and the rated frequency f nThe absolute value of and the size of the wind farm primary frequency regulation dead zone △f are used to determine whether the primary frequency regulation is in operation;

[0012] Step 3, voltage determination:

[0013] Based on the result of the primary frequency regulation action determined in step 2, determine the magnitude relationship between the positive sequence voltage amplitude U and the low voltage threshold value Ud and the high voltage threshold value Us of the wind farm, and determine whether the primary frequency regulation is in action;

[0014] Step 4, FM mode selection:

[0015] Based on the result of the frequency regulation action determined in step 3, determine whether the wind power and energy storage systems are jointly regulated or independently regulated;

[0016] If independent frequency regulation is used, the existing frequency regulation methods of wind power and energy storage systems shall be used respectively;

[0017] If the wind power and energy storage systems are jointly frequency regulated, it is further determined whether the AGC is put into use, and the active power action theoretical value △P is calculated according to the coordination logic of the AGC and the primary frequency regulation;

[0018] Step 5: Execute active power action:

[0019] Read the actual active power output of the wind turbine and the actual operating power P of the energy storage system 风 , P 储 , if △P>0, and P 风 ≥Theoretical active power that wind turbine can generate P 风理 , then the energy storage system is selected to perform the active power action theoretical value △P;

[0020] If △P>0, and P 风 <P 风理 , P 储 ≥Full discharge power of energy storage system Pn 放 , then the wind turbine is selected to perform the active power action theoretical value △P;

[0021] If △P>0, and P 风 <P 风理 , while P 储 <Pn 放 , and Pn 放 -P 储 ≥△P; then the energy storage system is selected to perform the active power action theoretical value △P;

[0022] If △P>0 and P 风 <P 风理 , while P 储 <Pn 放 , and Pn 放 -P 储<△P; then the energy storage system is preferred to execute the active power action theoretical value △P 11 , the wind turbine executes the theoretical value of active power action △P 12 ; where △P 11 =Pn 放 -P 储 , △P 12 =△P-△P 11 ;

[0023] If △P<0, P 储 ≥Full charging power of energy storage system Pn 充 , then the wind turbine is selected to perform the active power action theoretical value △P;

[0024] If △P<0, P 储 <Pn 充 , Pn 充 -P 储 ≥|△P|, the energy storage system is selected to perform the theoretical value of active power action △P;

[0025] If △P<0, P 储 <Pn 充 , Pn 充 -P 储 <|△P|, the energy storage system is preferred to execute the active power action theoretical value △P 21 , the wind turbine executes the theoretical value of active power action △P 22 ; where △P 21 =P 储 -Pn 充 , △P 22 =△P-△P 21 .

[0026] Furthermore, in step 2, the recommended value range of the primary frequency regulation dead zone △f of the wind farm is 0.03~0.1Hz; if the frequency f is equal to the rated frequency f n If the absolute value of is greater than the primary frequency regulation dead zone △f of the wind farm, the primary frequency regulation action conditions are met.

[0027] Further, in step 3, the wind farm low voltage threshold value U d Recommended: 0.8U n , high voltage threshold value U s Recommended: 1.15U n ; If the positive sequence voltage amplitude U of the wind farm satisfies 0.8U n <U<1.15U n , then the condition for a frequency modulation action is met.

[0028] Furthermore, in step 4, if the wind farm AGC is not put into operation, or the wind farm AGC is put into operation and the AGC is not in the regulation period, the active power action theoretical value △P is directly calculated according to the frequency change;

[0029] If the wind farm AGC is put into use and the AGC is in the regulation period, the AGC and primary frequency regulation logic judgment is performed and the AGC instruction △P is issued AGC The wind farm theoretical frequency modulation active power command △P 调 Calculate and obtain the theoretical value of active power action △P;

[0030] The coordination logic between AGC and primary frequency modulation includes AGC locking primary frequency modulation instructions, primary frequency modulation locking AGC instructions, AGC and primary frequency modulation instructions superimposing instructions in the same and reverse directions, AGC and primary frequency modulation instructions superimposing instructions in the same direction and locking primary frequency modulation instructions in the reverse direction, AGC and primary frequency modulation instructions superimposing instructions in the same direction and locking AGC instructions in the reverse direction.

[0031] Furthermore, the frequency modulation active power △P of the primary frequency modulation of the wind farm storage system 调 The calculation method is:

[0032]

[0033] In the formula, K f Indicates the active frequency modulation coefficient; f is the secondary voltage calculation frequency; f n Indicates the rated frequency of the power grid; P n风 Indicates the rated capacity of the wind turbine assembly; P n储 Indicates the rated power of the energy storage system.

[0034] Further, in step 5, the actual active power output of the wind turbine is P 风 Obtained through the wind turbine energy management platform or the active power accumulation of the collector line; the actual operating power of the energy storage system P 储 Obtained through the energy storage system energy management system.

[0035] Compared with the prior art, the primary frequency regulation control method of the wind farm storage power generation system has the following beneficial effects:

[0036] (1) A method for joint frequency regulation of a wind farm with storage and power generation system is proposed, which can fully play the role of energy storage in frequency regulation and reduce the power loss of the wind farm; when the power generation system frequency regulation needs to reduce active power, the charging power of the energy storage unit is increased first; when the power generation system frequency regulation needs to increase active power, wind turbines are used first to increase the active power of the power generation system.

[0037] (2) The primary frequency regulation method of the wind farm storage power generation system improves the existing primary frequency regulation method of the wind farm storage power generation system, increases the utilization rate of the energy storage system participating in the grid frequency regulation, and improves the primary frequency regulation effect of the wind farm storage power generation system.

[0038] (3) The primary frequency regulation method of the wind farm energy storage power generation system fully considers the frequency regulation under the conditions of wind turbines operating with reserved active power and without reserved active power, giving full play to the role of wind farm energy storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0040] in:

[0041] Figure 1 It is a flow chart of the primary frequency regulation control method of the wind farm storage power generation system of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In order to solve the shortcomings of the existing wind farm storage and power generation system in participating in the primary frequency regulation of the power grid, give full play to the coordination and cooperation role of the wind farm storage and power generation system, and improve the effect of primary frequency regulation, this embodiment provides a primary frequency regulation control method for the wind farm storage and power generation system.

[0044] like Figure 1 As shown, the primary frequency regulation control method of the wind farm storage power generation system includes the following steps:

[0045] Step 1, system monitoring:

[0046] The frequency regulation system of the wind farm storage power generation system collects the secondary voltage of the wind farm grid connection point and calculates the frequency f and positive sequence voltage amplitude U based on the secondary voltage.

[0047] Step 2, determine a frequency modulation action:

[0048] According to the frequency f and the rated frequency f nThe absolute value of and the size of the wind farm primary frequency regulation dead zone △f are used to determine whether the primary frequency regulation is in effect.

[0049] Furthermore, the recommended value range of the primary frequency regulation dead zone △f of the wind farm is 0.03~0.1Hz; if the frequency f is equal to the rated frequency f n If the absolute value of is greater than the primary frequency regulation dead zone △f of the wind farm, the primary frequency regulation action conditions are met.

[0050] Step 3, voltage determination:

[0051] Based on the result of the primary frequency regulation action determined in step 2, the positive sequence voltage amplitude U and the wind farm low voltage threshold value U are determined. d , high voltage threshold value U s The size relationship is used to determine whether the frequency modulation is activated.

[0052] Furthermore, the wind farm low voltage threshold value U d Recommended: 0.8U n , high voltage threshold value U s Recommended: 1.15U n ; If the positive sequence voltage amplitude U of the wind farm satisfies 0.8U n <U<1.15U n , then the condition for a frequency modulation action is met.

[0053] Step 4, FM mode selection:

[0054] Based on the result of the frequency regulation action determined in step 3, determine whether the wind power and energy storage systems are jointly regulated or independently regulated;

[0055] If independent frequency regulation is used, the existing frequency regulation methods of wind power and energy storage systems shall be used respectively;

[0056] If the wind power and energy storage systems are jointly frequency regulated, it is further determined whether the AGC is put into use, and the active power action theoretical value △P is calculated based on the coordination logic of the AGC and primary frequency regulation.

[0057] Specifically, if the wind farm AGC is not put into operation, or the wind farm AGC is put into operation and the AGC is not in the regulation period, the active power action theoretical value △P is directly calculated according to the frequency change;

[0058] If the wind farm AGC is put into use and the AGC is in the regulation period, the AGC and primary frequency regulation logic judgment is performed and the AGC instruction △P is issued AGC The wind farm theoretical frequency modulation active power command △P 调 Calculate and obtain the theoretical value of active power action △P;

[0059] The coordination logic between AGC and primary frequency modulation includes AGC locking primary frequency modulation instructions, primary frequency modulation locking AGC instructions, AGC and primary frequency modulation instructions superimposing instructions in the same and reverse directions, AGC and primary frequency modulation instructions superimposing instructions in the same direction and locking primary frequency modulation instructions in the reverse direction, AGC and primary frequency modulation instructions superimposing instructions in the same direction and locking AGC instructions in the reverse direction.

[0060] Active power of primary frequency regulation of wind farm storage system △P 调 The calculation method is:

[0061]

[0062] In the formula, K f represents the active frequency modulation coefficient, the value is 20; f is the secondary voltage calculation frequency; f n Indicates the rated frequency of the power grid, i.e. 50Hz; P n风 Indicates the rated capacity of the wind turbine assembly; P n储 Indicates the rated power of the energy storage system.

[0063] Step 5: Execute active power action:

[0064] Read the actual active power output of the wind turbine and the actual operating power P of the energy storage system 风 , P 储 , if △P>0, and P 风 ≥Theoretical active power that wind turbine can generate P 风理 , then the energy storage system is selected to perform the active power action theoretical value △P;

[0065] If △P>0, and P 风 <P 风理 , P 储 ≥Full discharge power of energy storage system Pn 放 , then the wind turbine is selected to perform the active power action theoretical value △P;

[0066] If △P>0, and P 风 <P 风理 , while P 储 <Pn 放 , and Pn 放 -P 储 ≥△P; then the energy storage system is selected to perform the active power action theoretical value △P;

[0067] If △P>0 and P 风 <P 风理 , while P 储 <Pn 放 , and Pn 放 -P 储 <△P; then the energy storage system is preferred to execute the active power action theoretical value △P11 , the wind turbine executes the theoretical value of active power action △P 12 ; where △P 11 =Pn 放 -P 储 , △P 12 =△P-△P 11 .

[0068] If △P<0, P 储 ≥Full charging power of energy storage system Pn 充 , then the wind turbine is selected to perform the active power action theoretical value △P;

[0069] If △P<0, P 储 <Pn 充 , Pn 充 -P 储 ≥|△P|, the energy storage system is selected to perform the theoretical value of active power action △P;

[0070] If △P<0, P 储 <Pn 充 , Pn 充 -P 储 <|△P|, the energy storage system is preferred to execute the active power action theoretical value △P 21 , the wind turbine executes the theoretical value of active power action △P 22 ; where △P 21 =P 储 -Pn 充 , △P 22 =△P-△P 21 .

[0071] The actual active power output of the wind turbine P 风 Obtained through the wind turbine energy management platform or the active power accumulation of the collector line; the actual operating power of the energy storage system P 储 Obtained through the energy storage system energy management system.

[0072] In order to verify the actual effect of the primary frequency regulation method of the wind farm storage power generation system, this embodiment also provides the following application examples:

[0073] Application Example 1

[0074] In the simulation, the wind turbine installed capacity of a wind farm with storage power generation system A is 100MW, and the installed capacity of the energy storage system is 10MW; that is, Pn 充 For 10MW, Pn 放 It is 10MW.

[0075] When the wind turbine is operating without reserved active power, the actual active power output of the wind turbine is P 风The actual operating power of the energy storage system is 70MW. 储 8MW;

[0076] The primary dead zone △f is set to 0.05Hz, the wind farm grid connection point frequency f is set from 50Hz to 50.2Hz, the grid connection point secondary voltage U is 1.0Un, and the AGC is not put into use.

[0077] Wind farm grid connection point frequency f = 50.2Hz and rated frequency f n =50Hz, the absolute value is greater than the primary frequency regulation dead zone of the wind farm △f = 0.05Hz, and the secondary voltage U at the grid connection point is 1.0U n Satisfy 0.8Un<U<1.15Un;

[0078] The calculated active power action theoretical value △P is 6.6MW. Since the wind turbine operates without reserved active power, P 风 =P 风理 , the theoretical value of active power action executed by the energy storage system is △P=6.6MW.

[0079] Application Example 2

[0080] In the simulation, the wind turbine installed capacity of a wind farm with storage power generation system B is 100MW, and the installed capacity of the energy storage system is 10MW; that is, Pn 充 For 10MW, Pn 放 It is 10MW.

[0081] When the wind turbine is operating without reserved active power, the actual active power output of the wind turbine is P 风 The actual operating power of the energy storage system is 70MW. 储 8MW;

[0082] The primary dead zone △f is set to 0.05Hz, the wind farm grid connection point frequency f is set from 50Hz to 50.2Hz, the grid connection point secondary voltage U is 1.1Un, and AGC is not put into use.

[0083] Wind farm grid connection point frequency f = 50.2Hz and rated frequency f n = The absolute value of 50Hz is greater than the primary frequency regulation dead zone of the wind farm △f = 0.05Hz, and the secondary voltage U at the grid connection point is 1.1Un, satisfying 0.8Un<U<1.15Un;

[0084] The calculated active power action theoretical value △P is -6.6MW, P 储 <Pn 充 ;

[0085] Further judgment of Pn 充 -P 储=10MW-8MW=2MW<|△P|, the energy storage system is preferred to execute the active power action theoretical value △P 21 =P 储 -Pn 充 =8MW-10MW=-2MW, the wind turbine executes the theoretical value of active power action △P 22 =△P-△P 21 =-6.6MW-(-2MW)=-4.6MW.

[0086] Application Example 3

[0087] In the simulation, the wind turbine installed capacity of a wind farm with storage power generation system C is 100MW, and the installed capacity of the energy storage system is 10MW; that is, Pn 充 For 10MW, Pn 放 It is 10MW.

[0088] When the wind turbine is operating without reserved active power, the actual active power output of the wind turbine is P 风 The actual operating power of the energy storage system is 70MW. 储 8MW;

[0089] The primary frequency regulation dead zone △f is set to 0.05Hz, the wind farm grid connection point frequency f is set to change from 50Hz to 50.2Hz, and the grid connection point secondary voltage U is 1.1Un; AGC is put into operation, and the AGC is superimposed in the same direction as the primary frequency regulation command and reversely blocks the primary frequency regulation command.

[0090] Wind farm grid connection point frequency f = 50.2Hz and rated frequency f n = The absolute value of 50Hz is greater than the primary frequency regulation dead zone of the wind farm △f = 0.05Hz, and the secondary voltage U at the grid connection point is 1.1Un, satisfying 0.8Un<U<1.15Un;

[0091] During one frequency modulation action, the AGC command is reduced by 5MW;

[0092] The calculated active power action theoretical value △P is -11.6MW, P 储 <Pn 充 ;

[0093] Further judgment of Pn 充 -P 储 =10MW-8MW=2MW<|△P|, the energy storage system is preferred to execute the active power action theoretical value △P 21 =P 储 -Pn 充 =8MW-10MW=-2MW, the wind turbine executes the theoretical value of active power action △P 22 =△P-△P 21=-11.6MW-(-2MW)=-9.6MW.

[0094] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the same elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A primary frequency modulation control method for a wind farm storage power generation system, characterized in that: The following steps are involved: Step 1, system monitoring: The frequency regulation system of the wind farm storage power generation system collects the secondary voltage of the wind farm grid connection point and calculates the frequency f and the positive sequence voltage amplitude U based on the secondary voltage; Step 2, determine a frequency modulation action: According to the frequency f and the rated frequency f n The absolute value of and the size of the wind farm primary frequency regulation dead zone △f are used to determine whether the primary frequency regulation is in operation; Step 3, voltage determination: Based on the result of the primary frequency regulation action determined in step 2, determine the magnitude relationship between the positive sequence voltage amplitude U and the low voltage threshold value Ud and the high voltage threshold value Us of the wind farm, and determine whether the primary frequency regulation is in action; Step 4, FM mode selection: Based on the result of the frequency regulation action determined in step 3, determine whether the wind power and energy storage systems are jointly regulated or independently regulated; If independent frequency regulation is used, the existing frequency regulation methods of wind power and energy storage systems shall be used respectively; If the wind power and energy storage systems are jointly frequency regulated, it is further determined whether the AGC is put into use, and the active power action theoretical value △P is calculated according to the coordination logic of the AGC and the primary frequency regulation; Step 5: Execute active power action: Read the actual active power output of the wind turbine and the actual operating power P of the energy storage system 风 , P 储 , if △P>0, and P 风 ≥Theoretical active power that wind turbine can generate P 风理 , then the energy storage system is selected to perform the active power action theoretical value △P; If △P>0, and P 风 <P 风理 , P 储 ≥Full discharge power of energy storage system Pn 放 , then the wind turbine is selected to perform the active power action theoretical value △P; If △P>0, and P 风 <P 风理 , while P 储 <Pn 放 , and Pn 放 -P 储 ≥△P; then the energy storage system is selected to perform the active power action theoretical value △P; If △P>0 and P 风 <P 风理 , while P 储 <Pn 放 , and Pn 放 -P 储 <△P; then the energy storage system is preferred to execute the active power action theoretical value △P 11 , the wind turbine executes the theoretical value of active power action △P 12 ; where △P 11 =Pn 放 -P 储 , △P 12 =△P-△P 11 ; If △P<0, P 储 ≥Full charging power of energy storage system Pn 充 , then the wind turbine is selected to perform the active power action theoretical value △P; If △P<0, P 储 <Pn 充 , Pn 充 -P 储 ≥|△P|, the energy storage system is selected to perform the theoretical value of active power action △P; If △P<0, P 储 <Pn 充 , Pn 充 -P 储 <|△P|, the energy storage system is preferred to execute the active power action theoretical value △P 21 , the wind turbine executes the theoretical value of active power action △P 22 ; where △P 21 =P 储 -Pn 充 , △P 22 =△P-△P 21 .

2. The primary frequency regulation control method of the wind farm storage power generation system according to claim 1 is characterized in that: In step 2, the recommended value range of the primary frequency regulation dead zone △f of the wind farm is 0.03~0.1Hz; if the frequency f is equal to the rated frequency f n If the absolute value of is greater than the primary frequency regulation dead zone △f of the wind farm, the primary frequency regulation action conditions are met.

3. The primary frequency regulation control method of the wind farm storage power generation system according to claim 1 is characterized in that: In step 3, the wind farm low voltage threshold value U d Recommended: 0.8U n , high voltage threshold value U s Recommended: 1.15U n ; If the positive sequence voltage amplitude U of the wind farm satisfies 0.8U n <U<1.15U n , then the condition for a frequency modulation action is met.

4. The primary frequency regulation control method of the wind farm storage power generation system according to claim 1, characterized in that: In step 4, if the wind farm AGC is not put into operation, or the wind farm AGC is put into operation and the AGC is not in the regulation period, the active power action theoretical value △P is directly calculated according to the frequency change; If the wind farm AGC is put into use and the AGC is in the regulation period, the AGC and primary frequency regulation logic judgment is performed and the AGC instruction △P is issued AGC The wind farm theoretical frequency modulation active power command △P 调 Calculate and obtain the theoretical value of active power action △P; The coordination logic between AGC and primary frequency modulation includes AGC locking primary frequency modulation instructions, primary frequency modulation locking AGC instructions, AGC and primary frequency modulation instructions superimposing instructions in the same and reverse directions, AGC and primary frequency modulation instructions superimposing instructions in the same direction and locking primary frequency modulation instructions in the reverse direction, AGC and primary frequency modulation instructions superimposing instructions in the same direction and locking AGC instructions in the reverse direction.

5. The primary frequency regulation control method of the wind farm storage power generation system according to claim 4 is characterized in that: Active power of primary frequency regulation of wind farm storage system △P 调 The calculation method is: In the formula, K f represents the active frequency modulation coefficient, the value is 20; f is the secondary voltage calculation frequency; f n Indicates the rated frequency of the power grid, i.e. 50Hz; P n风 Indicates the rated capacity of the wind turbine assembly; P n储 Indicates the rated power of the energy storage system.

6. The primary frequency regulation control method of the wind farm storage power generation system according to claim 4 is characterized in that: In step 5, the actual active power output of the wind turbine is P 风 Obtained through wind turbine energy management platform or active power accumulation of collector lines; Actual operating power of energy storage system P 储 Obtained through the energy storage system energy management system.

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