Energy storage primary frequency modulation switching control system and method in initial load stage of generator set

Abstract

The invention discloses an energy storage primary frequency modulation switching control system and method in the initial load stage of a generator set. The method comprises the steps that the state of the generator set needing to use energy storage is judged; judging whether the generator set is in a state under the condition that primary frequency modulation quits or not; judging whether the generator set is in a state under the primary frequency modulation input condition or not; according to the system and the method, energy storage primary frequency modulation can be carried out, and the overall frequency modulation capability of a power grid is improved.

Description

Technical Field

[0001] The invention belongs to the field of intelligent control of generator sets, and relates to an energy storage primary frequency modulation switching control system and method at the initial load stage of a generator set. Background Art

[0002] As the penetration rate of new energy sources such as wind power and photovoltaic power in the power grid continues to increase, the proportion of traditional generators has decreased, and the power grid is facing a structural dilemma of reduced frequency regulation resources and increasingly deteriorating frequency characteristics. This change has led to the emergence of power grid frequency security issues, and it is necessary to find new frequency regulation methods to assist traditional units in improving the overall frequency regulation capabilities of the power grid. Traditional power system frequency regulation methods can no longer meet the needs, and the development of energy storage technology has provided new possibilities for solving this problem. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a control system and method for energy storage primary frequency regulation switching at the initial load stage of a generator set. The system and method can perform energy storage primary frequency regulation and improve the overall frequency regulation capability of the power grid.

[0004] To achieve the above object, the present invention discloses a method for controlling energy storage primary frequency regulation switching at the initial load stage of a generator set, comprising:

[0005] Determine the status of the generator set when it is necessary to use energy storage;

[0006] Determine whether the generator set is in the state of primary frequency regulation exit;

[0007] Determine whether the generator set is in the state of primary frequency regulation;

[0008] Determine whether the generator set is in the state of primary frequency regulation action.

[0009] Furthermore, the process of determining the state of the generator set when energy storage is required is as follows:

[0010] When the output value of the operation module is 1, it is judged that this is the initial load; when the output value of the unit's grid-connected module is 0, when the output value of the unit's grid-connected module is 1 and the output value of the total control module is greater than 0, when the output value of the unit's grid-connected module is 1 and the output value of the APS startup module is 1 and the output value of the actual power module is greater than the output value of the APS initial load module, then no initial load occurs at this time.

[0011] Furthermore, the process of determining whether the generator set is in a state of primary frequency regulation exit is as follows:

[0012] When the output value of the primary frequency regulation exit button module is 1, it is determined that this is a primary frequency regulation exit; when the output value of the unit grid-connected module is 0, when the output value of the unit grid-connected module is 1 and the output value of the speed fault module is 0 and the output value of the initial load module is 1, then no primary frequency regulation exit occurs at this time.

[0013] Furthermore, the process of determining whether the generator set is in the state of primary frequency regulation is as follows:

[0014] When the output value of the unit grid-connected module is 0, the output value of the unit grid-connected module is 1, the output value of the speed fault module is 0, and the output value of the initial load module is 1, then the output value of the primary frequency regulation input module is 1.

[0015] Furthermore, the process of determining whether the generator set is in a state of a primary frequency modulation action is as follows:

[0016] When the output value of the unit's grid-connected module is 0, the output value of the unit's grid-connected module is 1, the output value of the speed fault module is 0, and the output value of the initial load module is 1, then determine whether the absolute value of the output value of the actual speed module subtracted from the output value of the rated speed module is greater than 2. When the absolute value of the output value of the actual speed module subtracted from the output value of the rated speed module is greater than 2, the output value of the primary frequency regulation action module is 1. Otherwise, the output value of the primary frequency regulation action module is 0.

[0017] The present invention discloses an energy storage primary frequency regulation switching control system at the initial load stage of a generator set, comprising:

[0018] A first calculation module is used to determine the state of the generator set when it is necessary to use energy storage;

[0019] The second calculation module is used to determine whether the generator set is in a state of primary frequency regulation exit;

[0020] The third calculation module is used to determine whether the generator set is in a state of primary frequency regulation;

[0021] The fourth calculation module is used to determine whether the generator set is in a state of a primary frequency regulation action.

[0022] Further, the first calculation module includes an operation module, a unit grid-connected module, a valve total setting module, an initial load opening module, a just-connected module, an APS startup module, an actual power module, an APS initial load module, an initial load module, a first AND module, a first NOT module, a first pulse module, a first SR module, a first switching module, a first addition module, a first subtraction module, a first greater than comparison module, a second AND module, a third AND module, a first OR module, a second OR module, a fourth AND module and a second greater than comparison module;

[0023] The output end of the running module and the output end of the grid-connected module of the unit are connected to the input end of the first AND module, the output end of the grid-connected module of the unit is connected to the input end of the second OR module via the first NOT module, the output end of the first AND module is connected to the S end of the first SR module via the first pulse module, the pv1 end, pv2 end and S end of the first switching module are connected to the output end of the first switching module, the output end of the total setting module of the regulating valve and the output end of the just-connected module, the input end of the first addition module is connected to the output end of the first switching module and the output end of the initial load opening module, the input end of the second greater than comparison module is connected to the output end of the actual power module and the output end of the APS initial load module, the output end of the second greater than comparison module and the output end of the APS startup module are connected The fourth AND module is connected to the input end, the input end of the first subtraction module is connected to the output end of the total setting module of the regulating valve and the output end of the first addition module, the output end of the first subtraction module is connected to the input end of the first greater than comparison module, the input end of the second AND module is connected to the output end of the module that has been connected to the grid of the unit and the output end of the first greater than comparison module, the input end of the third AND module is connected to the output end of the module that has been connected to the grid of the unit and the output end of the fourth AND module, the input end of the first OR module is connected to the output end of the second AND module and the output end of the third AND module, the output end of the first OR module is connected to the input end of the second OR module, the output end of the second OR module is connected to the R end of the first SR module, and the output end of the first SR module is connected to the input end of the initial load module.

[0024] Further, the second calculation module includes a speed fault module, a second negation module, a fifth and module, a third or module, a second SR module, a primary frequency modulation exit button module and a primary frequency modulation exit module;

[0025] The input end of the second non-module is connected to the output end of the speed fault module, the input end of the fifth and module is connected to the output end of the unit's grid-connected module, the output end of the second non-module and the output end of the initial load module, the input end of the third or module is connected to the output end of the fifth and module and the output end of the first non-module, the input end of the second SR module is connected to the output end of the primary frequency regulation exit button module and the output end of the third or module, and the output end of the second SR module is connected to the input end of the primary frequency regulation exit module.

[0026] Furthermore, the third calculation module includes a primary frequency modulation input module;

[0027] The output end of the fifth AND module is connected to the input end of the primary frequency modulation input module.

[0028] Further, the fourth calculation module includes a second subtraction module, an actual speed module, a rated speed module, a first absolute value module, a first greater than or equal to comparison module, a first less than comparison module, a third SR module, a sixth AND module and a primary frequency modulation action module;

[0029] The input end of the second subtraction module is connected to the output end of the actual speed module and the output end of the rated speed module, the output end of the second subtraction module is connected to the input end of the first greater than or equal to comparison module and the input end of the first less than comparison module via the first absolute value module, the S end and the R end of the third SR module are respectively connected to the output end of the first greater than or equal to comparison module and the output end of the first less than comparison module, the input end of the sixth AND module is connected to the output end of the third SR module and the output end of the fifth AND module, and the output end of the sixth AND module is connected to the input end of the primary frequency modulation action module.

[0030] The present invention has the following beneficial effects:

[0031] The energy storage primary frequency modulation switching control system and method for the initial load of the generator set described in the present invention utilizes a switching module, a comparison module, an SR module, etc. to apply the energy storage primary frequency modulation of the generator set during specific operation, so as to meet the needs of the generator set to invest in energy storage primary frequency modulation at the initial load stage. This system can meet the work of various types of generator sets in energy storage frequency modulation, and can be seamlessly connected to the distributed control system of the generator set. At the same time, the initial load signal of the generator set, the primary frequency modulation exit signal, the primary frequency modulation investment signal, etc. are used as the basis for the judgment method of whether the generator set currently meets the primary frequency modulation investment during the initial load period, which can be flexibly applied to various types of energy storage generator sets. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 is a system structure diagram of the present invention;

[0034] Figure 2 This is the distribution relationship diagram of the number of actions and action time.

[0035] Among them, 001 is the operation module, 002 is the unit grid-connected module, 003 is the total setting module of the regulating valve, 004 is the initial load opening module, 005 is the just-connected module, 006 is the APS start-up module, 007 is the actual power module, 008 is the APS initial load module, 009 is the primary frequency regulation exit button module, 010 is the speed fault module, 011 is the initial load module, 012 is the actual speed module, 013 is the rated speed module, 014 is the first AND module, 015 is the first NOT module, 016 is the first pulse module, 017 is the first SR module, 018 is the first switching module, 019 is the first addition module, 020 is the first subtraction module, 021 is the first greater than comparison module, 022 is the second and module, 023 is the third and module, 024 is the first or module, 025 is the second or module, 026 is the fourth and module, 027 is the second greater than comparison module, 028 is the fifth and module, 029 is the second not module, 030 is the third or module, 031 is the second SR module, 032 is the second subtraction module, 033 is the first absolute value module, 034 is the first greater than or equal to comparison module, 035 is the first less than comparison module, 036 is the third SR module, 037 is the sixth and module, 038 is the primary frequency modulation exit module, 039 is the primary frequency modulation input module, and 040 is the primary frequency modulation action module. DETAILED DESCRIPTION

[0036] 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 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.

[0037] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0038] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0039] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0040] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0041] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0044] refer to Figure 1The energy storage primary frequency regulation switching control system at the initial load stage of the generator set of the present invention comprises:

[0045] A first calculation module is used to determine the state of the generator set when it is necessary to use energy storage;

[0046] The second calculation module is used to determine whether the generator set is in a state of primary frequency regulation exit;

[0047] The third calculation module is used to determine whether the generator set is in a state of primary frequency regulation;

[0048] The fourth calculation module is used to determine whether the generator set is in a state of a primary frequency regulation action.

[0049] The first calculation module includes an operation module 001, a unit grid-connected module 002, a total setting module for the regulating valve 003, an initial load opening module 004, a just-connected module 005, an APS startup module 006, an actual power module 007, an APS initial load module 008, an initial load module 011, a first AND module 014, a first NOT module 015, a first pulse module 016, a first SR module 017, a first switching module 018, a first addition module 019, a first subtraction module 020, a first greater than comparison module 021, a second AND module 022, a third AND module 023, a first OR module 024, a second OR module 025, and a fourth AND module 026 and a second greater than comparison module 027; the second calculation module includes a speed fault module 010, a second non-module 029, a fifth and module 028, a third or module 030, a second SR module 031, a frequency modulation exit button module 009 and a frequency modulation exit module 038; the third calculation module includes a frequency modulation input module 039; the fourth calculation module includes a second subtraction module 032, an actual speed module 012, a rated speed module 013, a first absolute value module 033, a first greater than or equal to comparison module 034, a first less than comparison module 035, a third SR module 036, a sixth and module 037 and a frequency modulation action module 040;

[0050] The output end of the operation module 001 and the output end of the grid-connected module 002 of the unit are connected to the input end of the first AND module 014, the output end of the grid-connected module 002 of the unit is connected to the input end of the second OR module 025 via the first non-module 015, the output end of the first AND module 014 is connected to the S end of the first SR module 017 via the first pulse module 016, the pv1 end, the pv2 end and the S end of the first switching module 018 are connected to the output end of the first switching module 018, the output end of the total setting module 003 of the regulating valve and the output end of the just-connected module 005, the input end of the first addition module 019 is connected to the output end of the first switching module 018 and the output end of the initial load opening module 004, the input end of the second greater than comparison module 027 is connected to the output end of the actual power module 007 and the output end of the APS initial load module 008, the output end of the second greater than comparison module 027 and the output end of the APS startup module 006 are connected The fourth AND module 026 is connected to the input end of the module 026, the input end of the first subtraction module 020 is connected to the output end of the total setting module 003 of the regulating valve and the output end of the first addition module 019, the output end of the first subtraction module 020 is connected to the input end of the first greater than comparison module 021, the input end of the second AND module 022 is connected to the output end of the unit grid-connected module 002 and the output end of the first greater than comparison module 021, the input end of the third AND module 023 is connected to the output end of the unit grid-connected module 002 and the output end of the fourth AND module 026, the input end of the first OR module 024 is connected to the output end of the second AND module 022 and the output end of the third AND module 023, the output end of the first OR module 024 is connected to the input end of the second OR module 025, the output end of the second OR module 025 is connected to the R end of the first SR module 017, and the output end of the first SR module 017 is connected to the input end of the initial load module 011.

[0051] The input end of the second non-module 029 is connected to the output end of the speed fault module 010, the input end of the fifth and module 028 is connected to the output end of the unit grid-connected module 002, the output end of the second non-module 029 and the output end of the initial load module 011, the input end of the third or module 030 is connected to the output end of the fifth and module 028 and the output end of the first non-module 015, the input end of the second SR module 031 is connected to the output end of the primary frequency modulation exit button module 009 and the output end of the third or module 030, and the output end of the second SR module 031 is connected to the input end of the primary frequency modulation exit module 038.

[0052] The output end of the fifth AND module 028 is connected to the input end of the primary frequency modulation input module 039 .

[0053] The input end of the second subtraction module 032 is connected to the output end of the actual speed module 012 and the output end of the rated speed module 013, the output end of the second subtraction module 032 is connected to the input end of the first greater than or equal to comparison module 034 and the input end of the first less than comparison module 035 via the first absolute value module 033, the S end and the R end of the third SR module 036 are respectively connected to the output end of the first greater than or equal to comparison module 034 and the output end of the first less than comparison module 035, the input end of the sixth AND module 037 is connected to the output end of the third SR module 036 and the output end of the fifth AND module 028, and the output end of the sixth AND module 037 is connected to the input end of the primary frequency modulation action module 040.

[0054] The energy storage primary frequency regulation switching control method at the initial load stage of a generator set according to the present invention comprises the following steps:

[0055] 1) Determine the status of the generator set when it is necessary to use energy storage;

[0056] When the output value of the operation module 001 is 1, it is judged that this is the initial load; when the output value of the unit grid-connected module 002 is 0, when the output value of the unit grid-connected module 002 is 1 and the output value of the total setting module 003 of the regulating valve is greater than 0, when the output value of the unit grid-connected module 002 is 1 and the output value of the APS start-up module 006 is 1 and the output value of the actual power module 007 is greater than the output value of the APS initial load module 008, then no initial load occurs at this time.

[0057] 2) Determine whether the generator set is in the state of primary frequency regulation exit;

[0058] When the output value of the primary frequency regulation exit button module 009 is 1, it is determined that this is a primary frequency regulation exit; when the output value of the unit grid-connected module 002 is 0, when the output value of the unit grid-connected module 002 is 1 and the output value of the speed fault module 010 is 0 and the output value of the initial load module 011 is 1, then no primary frequency regulation exit occurs at this time.

[0059] 3) Determine whether the generator set is in the state of primary frequency regulation;

[0060] When the output value of the unit grid-connected module 002 is 0, the output value of the unit grid-connected module 002 is 1, the output value of the speed fault module 010 is 0, and the output value of the initial load module 011 is 1, then the output value of the primary frequency regulation input module 039 is 1.

[0061] 4) Determine whether the generator set is in the state of primary frequency regulation;

[0062] When the output value of the unit grid-connected module 002 is 0, the output value of the unit grid-connected module 002 is 1, the output value of the speed fault module 010 is 0, and the output value of the initial load module 011 is 1, then it is determined whether the absolute value after subtracting the output value of the actual speed module 012 from the output value of the rated speed module 013 is greater than 2. When the absolute value after subtracting the output value of the actual speed module 012 from the output value of the rated speed module 013 is greater than 2, the output value of the primary frequency modulation action module 040 is 1, otherwise, the output value of the primary frequency modulation action module 040 is 0.

[0063] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0064] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0065] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A method for controlling the switching of energy storage primary frequency modulation at the initial load stage of a generator set, characterized in that: include: Determine the status of the generator set when it is necessary to use energy storage; Determine whether the generator set is in the state of primary frequency regulation exit; Determine whether the generator set is in the state of primary frequency regulation; Determine whether the generator set is in the state of primary frequency regulation action.

2. The energy storage primary frequency modulation switching control method at the initial load stage of a generator set according to claim 1 is characterized in that: The process of determining the state of the generator set when energy storage is required is as follows: When the output value of the operation module (001) is 1, it is judged that this is the initial load; when the output value of the unit grid-connected module (002) is 0, when the output value of the unit grid-connected module (002) is 1 and the output value of the total setting module (003) is greater than 0, when the output value of the unit grid-connected module (002) is 1 and the output value of the APS startup module (006) is 1 and the output value of the actual power module (007) is greater than the output value of the APS initial load module (008), then no initial load occurs at this time.

3. The energy storage primary frequency modulation switching control method at the initial load stage of a generator set according to claim 1 is characterized in that: The process of determining whether the generator set is in a state of primary frequency regulation exit is as follows: When the output value of the primary frequency regulation exit button module (009) is 1, it is determined that this is a primary frequency regulation exit; when the output value of the unit grid-connected module (002) is 0, when the output value of the unit grid-connected module (002) is 1 and the output value of the speed fault module (010) is 0 and the output value of the initial load module (011) is 1, then no primary frequency regulation exit occurs at this time.

4. The energy storage primary frequency modulation switching control method at the initial load stage of a generator set according to claim 1 is characterized in that: The process of determining whether the generator set is in the state of primary frequency regulation is as follows: When the output value of the unit grid-connected module (002) is 0, the output value of the unit grid-connected module (002) is 1, the output value of the speed fault module (010) is 0, and the output value of the initial load module (011) is 1, then the output value of the primary frequency regulation input module (039) is 1.

5. The energy storage primary frequency modulation switching control method at the initial load stage of a generator set according to claim 1, characterized in that: The process of determining whether the generator set is in a state of primary frequency regulation is as follows: When the output value of the unit grid-connected module (002) is 0, the output value of the unit grid-connected module (002) is 1, the output value of the speed fault module (010) is 0, and the output value of the initial load module (011) is 1, it is determined whether the absolute value of the output value of the actual speed module (012) subtracted from the output value of the rated speed module (013) is greater than 2. When the absolute value of the output value of the actual speed module (012) subtracted from the output value of the rated speed module (013) is greater than 2, the output value of the primary frequency modulation action module (040) is 1. Otherwise, the output value of the primary frequency modulation action module (040) is 0.

6. A primary frequency regulation switching control system for energy storage at the initial load stage of a generator set, characterized in that: include: A first calculation module is used to determine the state of the generator set when it is necessary to use energy storage; The second calculation module is used to determine whether the generator set is in a state of primary frequency regulation exit; The third calculation module is used to determine whether the generator set is in a state of primary frequency regulation; The fourth calculation module is used to determine whether the generator set is in a state of a primary frequency regulation action.

7. The energy storage primary frequency regulation switching control system at the initial load stage of the generator set according to claim 6, characterized in that: The first calculation module comprises an operation module (001), a unit grid-connected module (002), a valve total setting module (003), an initial load opening module (004), a just-connected module (005), an APS startup module (006), an actual power module (007), an APS initial load module (008), an initial load module (011), a first AND module (014), a first NOT module (015), a first pulse module (016), a first SR module (017), a first switching module (018), a first addition module (019), a first subtraction module (020), a first greater than comparison module (021), a second AND module (022), a third AND module (023), a first OR module (024), a second OR module (025), a fourth AND module (026) and a second greater than comparison module (027); The output end of the operation module (001) and the output end of the unit grid-connected module (002) are connected to the input end of the first AND module (014), the output end of the unit grid-connected module (002) is connected to the input end of the second OR module (025) via the first non-module (015), the output end of the first AND module (014) is connected to the S end of the first SR module (017) via the first pulse module (016), the pv1 end, the pv2 end and the S end of the first switching module (018) are connected to the input end of the first switching module (018). The output end of the first adding module (019) is connected to the output end of the first switching module (018) and the output end of the initial load opening module (004), the input end of the second greater than comparison module (027) is connected to the output end of the actual power module (007) and the output end of the APS initial load module (008), the output end of the second greater than comparison module (027) and the output end of the APS starting module (006) are connected. The input end of the first subtraction module (020) is connected to the output end of the total setting module (003) of the regulating valve and the output end of the first addition module (019), the output end of the first subtraction module (020) is connected to the input end of the first greater than comparison module (021), the input end of the second AND module (022) is connected to the output end of the unit grid-connected module (002) and the output end of the first greater than comparison module (021), and the input end of the third AND module (023) is connected to the unit grid-connected module (002). The output end of the grid-connected module (002) and the output end of the fourth AND module (026) are connected, the input end of the first OR module (024) is connected to the output end of the second AND module (022) and the output end of the third AND module (023), the output end of the first OR module (024) is connected to the input end of the second OR module (025), the output end of the second OR module (025) is connected to the R end of the first SR module (017), and the output end of the first SR module (017) is connected to the input end of the initial load module 011.

8. The energy storage primary frequency regulation switching control system at the initial load stage of the generator set according to claim 7, characterized in that: The second calculation module comprises a speed fault module (010), a second negation module (029), a fifth and module (028), a third or module (030), a second SR module (031), a primary frequency modulation exit button module (009) and a primary frequency modulation exit module (038); The input end of the second non-module (029) is connected to the output end of the speed fault module (010), the input end of the fifth and module (028) is connected to the output end of the unit grid-connected module (002), the output end of the second non-module (029) and the output end of the initial load module (011), the input end of the third or module (030) is connected to the output end of the fifth and module (028) and the output end of the first non-module (015), the input end of the second SR module (031) is connected to the output end of the primary frequency modulation exit button module (009) and the output end of the third or module (030), and the output end of the second SR module (031) is connected to the input end of the primary frequency modulation exit module (038).

9. The energy storage primary frequency regulation switching control system at the initial load stage of the generator set according to claim 8, characterized in that: The third calculation module includes a primary frequency modulation input module (039); The output end of the fifth AND module (028) is connected to the input end of the primary frequency modulation input module (039).

10. The energy storage primary frequency regulation switching control system at the initial load stage of the generator set according to claim 8, characterized in that: The fourth calculation module comprises a second subtraction module (032), an actual speed module (012), a rated speed module (013), a first absolute value module (033), a first greater than or equal to comparison module (034), a first less than comparison module (035), a third SR module (036), a sixth AND module (037) and a primary frequency modulation action module (040); The input end of the second subtraction module (032) is connected to the output end of the actual speed module (012) and the output end of the rated speed module (013); the output end of the second subtraction module (032) is connected to the input end of the first greater than or equal to comparison module (034) and the input end of the first less than comparison module (035) via the first absolute value module (033); the S end and the R end of the third SR module (036) are respectively connected to the output end of the first greater than or equal to comparison module (034) and the output end of the first less than comparison module (035); the input end of the sixth AND module (037) is connected to the output end of the third SR module (036) and the output end of the fifth AND module (028); and the output end of the sixth AND module (037) is connected to the input end of the primary frequency modulation action module (040).

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