Dynamic load control method and system for generator set in energy storage mode

Abstract

The invention discloses a load dynamic control method and system of a generator set in an energy storage mode. The system comprises a first SR module, a first OR module, a first NOT module, a first AND module, a second OR module, a second NOT module, a second AND module, a third OR module, a third NOT module, a fourth OR module, a second SR module, a fourth NOT module, a fifth OR module, a fifth OR module, a fifth NOT module, a sixth OR module and a third SR module. The method comprises the following steps: judging the actual working state of the energy storage generator set under load limit input, and when the grid connection of the energy storage generator set is 1, the load limit input of the energy storage generator set passing through a first SR module is 1; and when the full fault of the power channel is 1, or the trip of the steam turbine is 1, or the energy storage generator set is disconnected as 1, the output end of the first OR module triggers the R end of the first SR module, and finally the load limit input of the energy storage generator set is 0. The auxiliary frequency modulation performance of the energy storage system is improved.

Description

Technical Field

[0001] The present invention belongs to the field of intelligent control of generator sets, and in particular relates to a method and system for dynamically controlling load of a generator set in an energy storage mode. Background Art

[0002] With the rapid development of renewable energy such as wind power and solar energy, the proportion of new energy in the power grid continues to increase. However, these new energy sources are intermittent and volatile, which poses challenges to the stability and reliability of the power grid. In order to solve this problem, it is necessary to configure an energy storage system on the new energy side and develop a method and system for dynamic load control of generator sets in energy storage mode to balance the output fluctuations of new energy and improve the stability and reliability of the power grid. Summary of the invention

[0003] The purpose of the present invention is to provide a method and system for dynamic load control of a generator set in energy storage mode. In the power system, the energy storage device is used as an auxiliary frequency regulation means to deal with the frequency deviation problem caused by source load uncertainty and communication delay. By designing a fractional-order PID controller to adjust its output power, the energy storage device can smooth the source load fluctuation and improve the auxiliary frequency regulation performance of the energy storage system.

[0004] In order to achieve the above object, the present invention adopts the following technical solution: A load dynamic control system for a generator set in an energy storage mode, comprising a first SR module, a first OR module, a first NOT module, a first AND module, a second OR module, a second NOT module, a second AND module, a third OR module, a third NOT module, a fourth OR module, a second SR module, a fourth NOT module, a fifth OR module, a fifth OR module, a fifth NOT module, a sixth OR module and a third SR module; The output ends of the first SR module are respectively connected to the load limit input of the energy storage generator set, the first non-module, the third non-module and the fifth non-module; the output ends of the first OR module are respectively connected to the "R" end of the first SR module and the second OR module; the output ends of the first non-module are respectively connected to the "S" end of the first AND module, the second AND module and the second SR module; the output end of the first AND module is connected to the second OR module; the output end of the second OR module is connected to the load limit input permission of the energy storage generator set through the second non-module; the output end of the second AND module is connected to the second OR module; the output end of the third OR module and the output end of the third non-module are both connected to the fourth OR module; the output end of the fourth OR module is connected to the "R" end of the second SR module, and the output end of the second SR module is respectively connected to the high load limit action of the energy storage generator set and the fifth OR module, and the output end of the fifth OR module is connected to the load limit action of the energy storage generator set; the output end of the fourth non-module is connected to the third OR module; the output end of the fifth OR module and the output end of the fifth non-module are both connected to the sixth OR module; the output end of the sixth OR module is connected to the "R" end of the third SR module; the output end of the third SR module is respectively connected to the fifth OR module and the low load limit action of the energy storage generator set.

[0005] A further improvement of the present invention is that the energy storage generator set is grid-connected to the "S" end of the first SR module.

[0006] A further improvement of the present invention is that all power channels fail, the steam turbine has tripped and the energy storage generator set has been decoupled, and they are all connected to the first or module, and the energy storage generator set has been decoupled and is also connected to the third or module and the fifth or module.

[0007] A further improvement of the present invention is that when the load of the energy storage generator set is greater than the upper limit, it is connected to the "S" end of the first and second SR modules; when the load of the energy storage generator set is less than the upper limit and the high-adjustment instruction is less than 10%, it is connected to the third or module.

[0008] A further improvement of the present invention is that the energy storage generator set load initial load is connected to the fourth non-module; The energy storage generator set load is less than the lower limit and is connected to the "S" terminal of the second and third SR modules respectively; The energy storage generator set load is greater than the lower limit and the high-adjustment command is greater than 90%. The high-adjustment command is greater than 90% and is connected to the fifth or module.

[0009] A method for dynamically controlling load of a generator set in an energy storage mode, the method being based on the dynamic load control system of the generator set in an energy storage mode, comprising: Determine the actual working status of the load limit of the energy storage generator set. When the energy storage generator set has been connected to the grid, which is 1, the load limit of the energy storage generator set after passing through the first SR module is 1; when the power channel is completely faulty, which is 1, or the steam turbine has tripped, which is 1, or the energy storage generator set has been de-listed, which is 1, the output end of the first OR module triggers the "R" end of the first SR module, which ultimately causes the load limit of the energy storage generator set to be 0.

[0010] A further improvement of the present invention is that it also includes: Determine the actual working state of the energy storage generator set load limit input allowed. When all the following conditions are not met, the energy storage generator set is connected to the grid as 1; the second step judgment condition one: the energy storage generator set is connected to the grid as 1 and the load of the energy storage generator set is greater than the upper limit as 0; the second step judgment condition two: the power channel is completely faulty as 0 and the steam turbine has tripped as 0 and the energy storage generator set has been de-listed as 0; the second step judgment condition three: the energy storage generator set is connected to the grid as 1 and the load of the energy storage generator set is less than the lower limit as 0.

[0011] A further improvement of the present invention is that it also includes: Determine the actual working state of the high-limit action of the energy storage generator set. When the load of the energy storage generator set is greater than the high limit value of 1, the high-limit action of the load of the energy storage generator set after passing the second SR module is 1; when the energy storage generator set has been connected to the grid is 0, or the energy storage generator set has been decoupled is 1, or the load of the energy storage generator set is less than the high limit value of 1, or the high-adjustment instruction is less than 10% is 1, or the initial load of the energy storage generator set is 0, then the output end of the fourth or module triggers the "R" end of the second SR module, which ultimately causes the high-limit action of the energy storage generator set to be 0.

[0012] A further improvement of the present invention is that it also includes: The actual working state of the load limiting action of the energy storage generator set is determined. When the output terminal of the second SR module is 1 or the load of the energy storage generator set is less than the lower limit value, the load limiting action of the energy storage generator set is 1 at this time.

[0013] A further improvement of the present invention is that it also includes: Determine the actual working state of the energy storage generator set load lower limit action. When the energy storage generator set load is less than the lower limit value of 1, the energy storage generator set load lower limit action after passing the third SR module is 1; when the energy storage generator set has been connected to the grid is 0, or the energy storage generator set has been decoupled is 1, or the energy storage generator set load is greater than the lower limit value of 1, or the high-adjustment instruction is greater than 90% is 1, then the output end of the sixth or module triggers the "R" end of the third SR module, which ultimately causes the energy storage generator set load lower limit action to be 0.

[0014] Compared with the prior art, the present invention has at least the following beneficial technical effects: The load dynamic control system of the generator set provided by the present invention in the energy storage mode adopts virtual inertia control to quickly provide or absorb power to cope with changes in grid frequency by simulating the inertial response of traditional generators, imitates the active power-frequency characteristic curve of the energy storage generator set, and adjusts the output power according to the system frequency deviation to achieve dynamic regulation of the load.

[0015] The method for dynamic load control of a generator set in an energy storage mode provided by the present invention adopts a linearized prediction model of an energy storage type generator set, and combines a DCS system control framework to design an optimization model and strategy. The strategy takes into account the balanced changes in the energy storage loss cost and the linear law of energy storage charging and discharging, and aims to achieve dynamic load balance and stability of the generator set in the energy storage mode during inertia control.

[0016] In summary, the method and system for dynamically controlling the load of a generator set in an energy storage mode described in the present invention adjust the energy storage participation according to the differences in regional frequency regulation demands, design a method and system for dynamically controlling the load of a generator set in an energy storage mode with frequency regulation effect and energy storage frequency regulation cost as the goals, and use a multi-objective genetic algorithm to solve the optimization problem to obtain the optimal responsibility allocation for energy storage participating in frequency regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is the schematic diagram of the load dynamic control system of the generator set in energy storage mode.

[0019] Figure 2 This is a rendering of an embodiment of the present invention.

[0020] Description of reference numerals: 001. The energy storage generator set has been connected to the grid. 002. All power channels are faulty. 003. The steam turbine has tripped. 004. The energy storage generator set has been de-energized. 005. The load of the energy storage generator set is greater than the upper limit. 006. The load of the energy storage generator set is less than the upper limit. 007. The high-adjustment instruction is less than 10%. 008. The initial load of the energy storage generator set. 009. The load of the energy storage generator set is less than the lower limit. 010. The load of the energy storage generator set is greater than the lower limit. 011. The high-adjustment instruction is greater than 90%. 012. The first SR module. 013. The first or module. 014. The first non-module. 015. The first and module. 016. The second Or module, 017, second non-module, 018, second and module, 019, third Or module, 020, third non-module, 021, fourth Or module, 022, second SR module, 023, fourth non-module, 024, fifth Or module, 025, fifth Or module, 026, fifth non-module, 027, sixth Or module, 028, third SR module, 029, energy storage generator set load limit input, 030, energy storage generator set load limit input allowed, 031, energy storage generator set load high limit action, 032, energy storage generator set load limit action, 033, energy storage generator set load low limit action. DETAILED DESCRIPTION

[0021] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0027] 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.

[0028] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0029] 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.

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] Example 1 like Figure 1 As shown, the load dynamic control system of the generator set provided by the present invention in the energy storage mode specifically includes: the energy storage generator set has been connected to the grid 001, the power channel has a complete fault 002, the steam turbine has tripped 003, the energy storage generator set has been decoupled 004, the load of the energy storage generator set is greater than the upper limit 005, the load of the energy storage generator set is less than the upper limit 006, the high-adjustment instruction is less than 10% 007, the initial load of the energy storage generator set 008, the load of the energy storage generator set is less than the lower limit 009, the load of the energy storage generator set is greater than the lower limit 010, the high-adjustment instruction is greater than 90% 011, the first SR module 012, the first or module 013, the first non-module 014, first AND module 015, second OR module 016, second NOT module 017, second AND module 018, third OR module 019, third NOT module 020, fourth OR module 021, second SR module 022, fourth NOT module 023, fifth OR module 024, fifth OR module 025, fifth NOT module 026, sixth OR module 027, third SR module 028, energy storage generator set load limit input 029, energy storage generator set load limit input permission 030, energy storage generator set load high limit action 031, energy storage generator set load limit action 032, energy storage generator set load low limit action 033.

[0032] Figure 1 The control strategy logic diagram contains the following 4 parts: The control connection method of the energy storage generator set load limit input 029: the power channel complete failure 002, the steam turbine has tripped 003 and the energy storage generator set has been de-energized 004 are all connected to the first or module 013, the energy storage generator set has been connected to the grid 001 and the output end of the first or module 013 are respectively connected to the "S" end and the "R" end of the first SR module 012, and the output end of the first SR module 012 is connected to the energy storage generator set load limit input 029.

[0033] The control connection method of the energy storage generator set load limit input permission 030 is as follows: the output end of the first SR module 012 is connected to the first non-module 014, and the output end of the first non-module 014 and the energy storage generator set load greater than the upper limit 005 are both connected to the first AND module 015; the output end of the first non-module 014 and the energy storage generator set load less than the lower limit 009 are both connected to the second AND module 018; the output end of the first AND module 015, the output end of the first OR module 013 and the output end of the second AND module 018 are all connected to the second OR module 016, and the output end of the second OR module 016 is sequentially connected to the second non-module 017 and the energy storage generator set load limit input permission 030.

[0034] The control connection mode of the energy storage generator set load high limit action 031 is as follows: the output end of the first SR module 012 is connected to the third non-module 020; the energy storage generator set load initial load 008 is connected to the fourth non-module 023, the energy storage generator set has been de-listed 004, the energy storage generator set load is less than the high limit value 006, the high-adjustment instruction is less than 10% 007 and the output end of the fourth non-module 023 are all connected to the third OR module 019, the output end of the third non-module 020 and the output end of the third OR module 019 are both connected to the fourth OR module 021; the energy storage generator set load is greater than the high limit value 005 and the output end of the fourth OR module 021 are respectively connected to the "S" end and the "R" end of the second SR module 022, and the output end of the second SR module 022 is connected to the energy storage generator set load high limit action 031.

[0035] The control connection method of the energy storage generator set load limiting action 032 is as follows: the energy storage generator set has been de-listed 004, the load of the energy storage generator set is greater than the lower limit 010, and the high-adjustment instruction is greater than 90% 011, all of which are connected to the fifth OR module 025; the output end of the first SR module 012 is connected to the fifth non-module 026; the output end of the fifth non-module 026 and the output end of the fifth OR module 025 are both connected to the sixth OR module 027; the load of the energy storage generator set is less than the lower limit 009 and the output end of the sixth OR module 027 are respectively connected to the "S" end and the "R" end of the third SR module 028; the output end of the second SR module 022 and the output end of the third SR module 028 are both connected to the fifth OR module 024, and the output end of the fifth OR module 024 is connected to the energy storage generator set load limiting action 032.

[0036] Control connection mode of the energy storage generator set load lower limit action 033: the output end of the third SR module 028 is connected to the energy storage generator set load lower limit action 033.

[0037] Example 2 like Figure 1 As shown, the method for dynamic load control of a generator set in energy storage mode provided by the present invention comprises: The first step is to determine the actual working state of the energy storage generator set load limit input 029. When the energy storage generator set has been connected to the grid 001 is 1, the energy storage generator set load limit input 029 after passing through the first SR module 012 is 1; when the power channel is completely faulty 002 is 1, or the steam turbine has tripped 003 is 1, or the energy storage generator set has been decoupled 004 is 1, the output end of the first OR module 013 triggers the "R" end of the first SR module 012, which ultimately causes the energy storage generator set load limit input 029 to be 0; The second step is to determine the actual working state of the energy storage generator set load limit input permission 030. When all the following conditions are not met, when the energy storage generator set has been connected to the grid 001 is 1; the second step judgment condition one: the energy storage generator set has been connected to the grid 001 is 1 and the load of the energy storage generator set is greater than the upper limit 005 is 0; the second step judgment condition two: the power channel is completely faulty 002 is 0 and the steam turbine has tripped 003 is 0 and the energy storage generator set has been decoupled 004 is 0; the second step judgment condition three: the energy storage generator set has been connected to the grid 001 is 1 and the load of the energy storage generator set is less than the lower limit 009 is 0; The third step is to determine the actual working state of the energy storage generator set load high limit action 031. When the energy storage generator set load is greater than the high limit value 005, which is 1, the energy storage generator set load high limit action 031 after passing the second SR module 022 is 1; when the energy storage generator set has been connected to the grid 001, which is 0, or the energy storage generator set has been decoupled 004, which is 1, or the energy storage generator set load is less than the high limit value 006, which is 1, or the high adjustment instruction is less than 10% 007, which is 1, or the energy storage generator set load initial load 008 is 0, then the output end of the fourth or module 021 triggers the "R" end of the second SR module 022, which ultimately causes the energy storage generator set load high limit action 031 to be 0; The fourth step is to determine the actual working state of the energy storage generator set load limiting action 032. When the output terminal of the second SR module 022 is 1 or the load of the energy storage generator set is less than the lower limit 009, the energy storage generator set load limiting action 032 is 1 at this time; The fifth step is to determine the actual working state of the energy storage generator set load lower limit action 033. When the energy storage generator set load is less than the lower limit value 009, which is 1, the energy storage generator set load lower limit action 033 after passing the third SR module 028 is 1; when the energy storage generator set has been connected to the grid 001, which is 0, or the energy storage generator set has been decoupled 004, which is 1, or the energy storage generator set load is greater than the lower limit value 010, which is 1, or the high-adjustment instruction is greater than 90% 011, which is 1, the output end of the sixth or module 027 triggers the "R" end of the third SR module 028, which ultimately causes the energy storage generator set load lower limit action 033 to be 0.

[0038] Example 3 like Figure 2As shown, through the implementation and application of the technology of the present invention within the simulation range, the specific time range is from 00:00 to 24:00. During the entire charging and discharging process, the charging curve and the discharging curve are stably controlled, and the two can be adjusted to complement each other. The control effect is good within the charging and discharging range of 60% to 100%, which meets the application requirements of the energy storage generator set under different working conditions throughout the day, realizes the on-demand adjustment and control of the unit load, and can meet the goal of responding to the peak load of the power grid, providing a guarantee for the stable and safe operation of the energy storage generator set.

[0039] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0040] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. The load dynamic control system of the generator set in the energy storage mode is characterized by: including a first SR module (012), a first OR module (013), a first NOT module (014), a first AND module (015), a second OR module (016), a second NOT module (017), a second AND module (018), a third OR module (019), a third NOT module (020), a fourth OR module (021), a second SR module (022), a fourth NOT module (023), a fifth OR module (024), a fifth OR module (025), a fifth NOT module (026), a sixth OR module (027) and a third SR module (028); The output end of the first SR module (012) is respectively connected to the energy storage generator set load limit input (029), the first non-module (014), the third non-module (020) and the fifth non-module (026); the output end of the first OR module (013) is respectively connected to the "R" end of the first SR module (012) and the second OR module (016); the output end of the first non-module (014) is respectively connected to the first AND module (015), the second AND module (018) and the "S" end of the second SR module (022); the output end of the first AND module (015) is connected to the second OR module (016); the output end of the second OR module (016) is connected to the energy storage generator set load limit input permission (030) through the second non-module (017); the output end of the second AND module (018) is connected to the second OR module (016); the output end of the third OR module (019) and the third non-module (019) are respectively connected to the "R" end of the first SR module (012) and the second OR module (016); the output end of the first AND module (015) is connected to the second AND module (018) and the "S" end of the second SR module (022); the output end of the first AND module (015) is connected to the second OR module (016); the output end of the second AND module (018) is connected to the second OR module (016); the output end of the third OR module (019) and the third non-module (019) are respectively connected to the "R" end of the first SR module (012) and the second OR module (016); the output end of the first AND module (015) is connected to the second OR module (018) and the "S" end of the second SR module (022); the output end of the first AND module (015) is connected to the second OR module The output ends of the modules (020) are all connected to the fourth OR module (021); the output end of the fourth OR module (021) is connected to the "R" end of the second SR module (022); the output end of the second SR module (022) is respectively connected to the energy storage generator set load upper limit action (031) and the fifth OR module (024); the output end of the fifth OR module (024) is connected to the energy storage generator set load limit action (032); the output end of the fourth non-module (023) is connected to the third OR module (019); the output end of the fifth OR module (025) and the output end of the fifth non-module (026) are both connected to the sixth OR module (027); the output end of the sixth OR module (027) is connected to the "R" end of the third SR module (028); the output end of the third SR module (028) is respectively connected to the fifth OR module (024) and the energy storage generator set load lower limit action (033).

2. The load dynamic control system of the generator set in the energy storage mode according to claim 1, characterized in that: The energy storage generator set is grid-connected (001) and connected to the "S" terminal of the first SR module (012).

3. The load dynamic control system of the generator set in the energy storage mode according to claim 2, characterized in that: All power channels are faulty (002), the turbine has tripped (003), and the energy storage generator set has been decoupled (004) are connected to the first or module (013), and the energy storage generator set has been decoupled (004) is also connected to the third or module (019) and the fifth or module (025).

4. The load dynamic control system of the generator set in the energy storage mode according to claim 3 is characterized in that: When the load of the energy storage generator set is greater than the upper limit value (005), it is connected to the "S" end of the first AND module (015) and the second SR module (022); when the load of the energy storage generator set is less than the upper limit value (006) and the high-adjustment instruction is less than 10% (007), it is connected to the third OR module (019).

5. The load dynamic control system of the generator set in the energy storage mode according to claim 4, characterized in that: The energy storage generator set load initial load (008) is connected to the fourth non-module (023); The energy storage generator set load is less than the lower limit value (009) and is connected to the "S" end of the second AND module (018) and the third SR module (028) respectively; The energy storage generator set load is greater than the lower limit value (010) and the high-adjustment command is greater than 90% (011). The high-adjustment command is greater than 90% (011) and is connected to the fifth or module (025).

6. A method for dynamically controlling load of a generator set in energy storage mode, characterized in that: The method is based on the load dynamic control system of the generator set in the energy storage mode according to claim 5, comprising: The actual working state of the energy storage generator set load limit input (029) is determined. When the energy storage generator set has been connected to the grid (001) is 1, the energy storage generator set load limit input (029) after passing through the first SR module (012) is 1; when the power channel is completely faulty (002) is 1, or the steam turbine has tripped (003) is 1, or the energy storage generator set has been de-energized (004) is 1, the output end of the first OR module (013) triggers the "R" end of the first SR module (012), which ultimately causes the energy storage generator set load limit input (029) to be 0.

7. The method for dynamic load control of a generator set in energy storage mode according to claim 6, characterized in that: Also includes: Determine the actual working status of the energy storage generator set load limit input permission (030). When all the following conditions are not met, the energy storage generator set is connected to the grid (001) is 1; the second step judgment condition one: the energy storage generator set is connected to the grid (001) is 1 and the energy storage generator set load is greater than the upper limit (005) is 0; the second step judgment condition two: the power channel is completely faulty (002) is 0 and the steam turbine has tripped (003) is 0 and the energy storage generator set has been de-energized (004) is 0; the second step judgment condition three: the energy storage generator set is connected to the grid (001) is 1 and the energy storage generator set load is less than the lower limit (009) is 0.

8. The method for dynamic load control of a generator set in energy storage mode according to claim 7, characterized in that: Also includes: The actual working state of the energy storage generator set load high limit action (031) is judged. When the energy storage generator set load is greater than the high limit value (005) is 1, the energy storage generator set load high limit action (031) after passing through the second SR module (022) is 1; when the energy storage generator set has been connected to the grid (001) is 0, or the energy storage generator set has been disconnected (004) is 1, or the energy storage generator set load is less than the high limit value (006) is 1, or the high adjustment instruction is less than 10% (007) is 1, or the energy storage generator set load initial load (008) is 0, then the output end of the fourth OR module (021) triggers the "R" end of the second SR module (022), which ultimately causes the energy storage generator set load high limit action (031) to be 0.

9. The method for dynamic load control of a generator set in energy storage mode according to claim 8, characterized in that: Also includes: The actual working state of the energy storage generator set load limiting action (032) is determined. When the output terminal of the second SR module (022) is 1 or the load of the energy storage generator set is less than the lower limit value (009), the energy storage generator set load limiting action (032) is 1 at this time.

10. The method for dynamic load control of a generator set in energy storage mode according to claim 9, characterized in that: Also includes: The actual working state of the energy storage generator set load lower limit action (033) is determined. When the energy storage generator set load is less than the lower limit value (009) which is 1, the energy storage generator set load lower limit action (033) after passing through the third SR module (028) is 1; when the energy storage generator set has been connected to the grid (001) which is 0, or the energy storage generator set has been disconnected (004) which is 1, or the energy storage generator set load is greater than the lower limit value (010) which is 1, or the high adjustment instruction is greater than 90% (011) which is 1, the output end of the sixth OR module (027) triggers the "R" end of the third SR module (028), which ultimately causes the energy storage generator set load lower limit action (033) to be 0.

Images