Control method and apparatus for power supply system, and power supply system

Abstract

The present application relates to a control method and apparatus for a power supply system, and a power supply system. The method is applied to a control module in a power supply system, wherein the power supply system comprises the control module, a parallel operation module, at least one power generation module, at least one energy storage module and a load module, and the parallel operation module is used for supplying power to the load module. The method comprises: during the process of a parallel operation module supplying power to a load module, acquiring the current total load power of the load module; acquiring an operation mode of each power generation module and / or energy storage module that is currently operating; and on the basis of the total load power and the operation mode, determining a power supply power of each power generation module and / or energy storage module that is currently operating, and controlling the power generation module and / or energy storage module to supply power to the parallel operation module according to a corresponding power supply power.

Description

Control methods for power supply systems, power supply systems and devices

[0001] This application claims priority to Chinese Patent Application No. 202510009711.3, filed on January 3, 2025, entitled "Control Method, Power Supply System and Device for Power Supply System", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of power system control technology, and in particular to a control method, power supply system and device for a power supply system. Background Technology

[0003] Currently, the oil and gas industry commonly uses hydraulic fracturing for extraction. However, as oil and gas extraction becomes cleaner and more efficient, fracturing operations are increasingly driven by electric power. In electric power systems, gas turbine generator sets are widely used for power supply during well site fracturing operations due to their advantages such as high output power and high energy density.

[0004] However, when power is supplied by a single gas turbine generator set, the idle time and low load operation time are long, and the surplus electricity cannot be released, resulting in a low gas-to-electric ratio. Summary of the Invention

[0005] Technical solution

[0006] This application provides a control method for a power supply system, applied to a control module in the power supply system. The power supply system includes the control module, a parallel module, at least one generator module, at least one energy storage module, and a load module. The parallel module is used to supply power to the load module. The method includes:

[0007] During the process of the parallel module supplying power to the load module, the current total load power of the load module is obtained;

[0008] Obtain the operating mode of each of the aforementioned power generation modules and / or energy storage modules that are currently in operation;

[0009] Based on the total load power and the operating mode, determine the power supply power of each of the currently operating power generation modules and / or energy storage modules, and control the power generation modules and / or energy storage modules to supply power to the parallel modules according to the corresponding power supply power.

[0010] As an optional implementation, when there are at least two energy storage modules currently in operation, determining the power supply of each of the currently operating power generation modules and / or energy storage modules based on the total load power and the operating mode includes:

[0011] If it is determined that at least two of the energy storage modules currently in operation are in off-grid operation mode, a first number of the energy storage modules currently in operation is determined.

[0012] Divide the total load power by the first quantity to obtain the average load power;

[0013] The average load power is determined as the power supply power corresponding to each of the energy storage modules currently in operation.

[0014] As an optional implementation, when there are at least two energy storage modules currently in operation, determining the power supply of each of the currently operating power generation modules and / or energy storage modules based on the total load power and the operating mode includes:

[0015] If it is determined that at least two of the energy storage modules currently in operation are in off-grid operation mode, determine the first remaining power of each of the energy storage modules currently in operation;

[0016] Based on the first remaining power of each of the energy storage modules, determine the first power generation ratio of all the energy storage modules currently in operation;

[0017] The power supply of each of the energy storage modules currently in operation is determined based on the total load power and the first power generation ratio.

[0018] As an optional implementation, determining the power supply of each currently operating power generation module and / or energy storage module based on the total load power and the operating mode includes:

[0019] If it is determined that at least two of the energy storage modules currently in operation include a first grid-connected energy storage module operating in grid-connected mode and a first off-grid energy storage module operating in off-grid mode, the first power supply power of each of the first grid-connected energy storage modules is obtained, wherein the first grid-connected energy storage module determines the first power supply power according to the received power command and operates according to the first power supply power.

[0020] Based on the total load power and the first power supply power of each of the first grid-connected energy storage modules, determine the first remaining load power corresponding to all the first off-grid energy storage modules.

[0021] The power supply power of each of the first off-grid energy storage modules is determined based on the first remaining load power.

[0022] As an optional implementation, determining the power supply of each of the first off-grid energy storage modules based on the first remaining load power includes:

[0023] Determine the second number of the first off-grid energy storage modules; divide the first remaining load power by the second number to obtain the power supply power of each of the first off-grid energy storage modules;

[0024] or,

[0025] Determine the second remaining power of each of the first off-grid energy storage modules; based on the second remaining power of each of the first off-grid energy storage modules, determine the second power generation ratio of all currently operating first off-grid energy storage modules; and based on the first remaining load power and the second power generation ratio, determine the power supply of each of the first off-grid energy storage modules.

[0026] As an optional implementation, when the currently operating modules include at least one power generation module and at least one energy storage module, determining the power supply of each currently operating power generation module and / or energy storage module based on the total load power and the operating mode includes:

[0027] If it is determined that the operating mode of the currently operating power generation module is grid-connected and the operating mode of the currently operating energy storage module is off-grid, the second power supply power of each of the currently operating power generation modules is obtained, wherein the power generation module determines the second power supply power according to the received power command and operates according to the second power supply power;

[0028] Based on the total load power and the second power supply power of each of the power generation modules, determine the second remaining load power corresponding to all the currently operating energy storage modules;

[0029] The power supply of each of the energy storage modules currently in operation is determined based on the second remaining load power.

[0030] As an optional implementation, the power supply of each currently operating power generation module and / or energy storage module is determined based on the total load power and the operating mode, including:

[0031] If it is determined that the operating mode of the currently operating power generation modules is grid-connected, and it is determined that the multiple currently operating energy storage modules include a second grid-connected energy storage module operating in grid-connected mode and a second off-grid energy storage module operating in off-grid mode, the third power supply power of each currently operating power generation module is obtained, wherein the power generation module determines the third power supply power according to the received power command and operates according to the third power supply power;

[0032] Obtain the fourth power supply of each of the second grid-connected energy storage modules, wherein each of the second grid-connected energy storage modules determines the fourth power supply according to the received power command and operates according to the fourth power supply;

[0033] Based on the total load power, the third power supply power corresponding to each of the power generation modules, and the fourth power supply power corresponding to each of the second grid-connected energy storage modules, the third remaining load power corresponding to all the second off-grid energy storage modules is determined.

[0034] The power supply of each of the second off-grid energy storage modules is determined based on the third remaining load power.

[0035] As an optional implementation, the power supply of each currently operating power generation module and / or energy storage module is determined based on the total load power and the operating mode, including:

[0036] Given that the operating modes of the currently operating power generation modules are all off-grid operation and the operating modes of the currently operating energy storage modules are all grid-connected operation, the fifth power supply power of each of the currently operating energy storage modules is obtained, wherein the energy storage module determines the fifth power supply power according to the received power command and operates according to the fifth power supply power;

[0037] Based on the total load power and the fifth power supply power of each energy storage module, determine the fourth remaining load power corresponding to all currently operating power generation modules;

[0038] Determine the amount of electricity generated by the currently operating power generation module;

[0039] Divide the fourth remaining load power by the number of generators to obtain the power supply power of each generator module.

[0040] As an optional implementation, the method further includes:

[0041] If it is determined that there is a target first grid-connected energy storage module to be charged, the charging power of the target first grid-connected energy storage module is determined.

[0042] Based on the power to be charged, determine a charging command to characterize the power supplied by the power to be charged;

[0043] From the first off-grid energy storage modules, determine the target first off-grid energy storage module for charging;

[0044] The charging command is sent to the target first off-grid energy storage module so that the target first off-grid energy storage module charges the target first grid-connected energy storage module according to the charging power.

[0045] As an optional implementation, the method further includes:

[0046] In the energy storage modules operating in grid-connected mode, identify one or more target energy storage modules to be charged;

[0047] Determine the current energy storage ratio of each target energy storage module; based on the energy storage ratio of each target energy storage module, determine the target charging power for the target energy storage module, and control the power generation module to charge the target energy storage module according to the target charging power;

[0048] During the process of charging the target energy storage module according to the target charging power, if a target operation is detected for the target energy storage module, a new target charging power for the target energy storage module is determined according to the target operation, and the target energy storage module is charged separately according to the new target charging power; the target operation is used to characterize charging the target energy storage module separately according to the new target charging power.

[0049] As an optional implementation, the power generation module is a gas turbine generator set, and the method further includes:

[0050] Determine the combustion temperature for each of the aforementioned gas turbine generator sets;

[0051] For each gas turbine generator set, if it is determined that the corresponding combustion temperature is greater than a preset first temperature threshold, the first target regulating power corresponding to the combustion temperature is determined from the first correspondence between the preset temperature range and the regulating power, based on the combustion temperature.

[0052] When the currently operating energy storage module is charging, adjust the power according to the first target and reduce the charging power of the energy storage module whose operating mode is off-grid operation;

[0053] When the currently operating energy storage module is powered, adjust the power according to the first target and increase the power supply of the energy storage module in the off-grid operation mode.

[0054] As an optional implementation, the method further includes:

[0055] If the combustion temperature is determined to be less than a preset second temperature threshold, a second target adjustment power corresponding to the combustion temperature is determined from a preset second correspondence between temperature range and adjustment power, based on the combustion temperature; wherein the second temperature threshold is less than the first temperature threshold.

[0056] While the currently operating energy storage module is charging, the power is adjusted according to the second target to increase the charging power of the energy storage module whose operating mode is off-grid;

[0057] When the currently operating energy storage module is powered, adjust the power according to the second objective to reduce the power supply of the energy storage module in the off-grid operation mode.

[0058] Secondly, this application provides a power supply system, including: a control module, a set of power generation modules, a set of energy storage modules, a parallel module, and a load module, wherein the set of power generation modules includes at least one power generation module, and the set of energy storage modules includes at least one energy storage module.

[0059] The control terminal of the control module is connected to the first terminal of at least one of the power generation modules in the power generation module set and the first terminal of at least one of the energy storage modules in the energy storage module set, respectively.

[0060] The second end of each power generation module in the power generation module set and the second end of each energy storage module in the energy storage module set are both used to connect to the first end of the parallel operation module; wherein, the parallel operation module is powered by at least two target modules in the power generation module set and the energy storage module set, and the target modules are the power generation module and / or the energy storage module;

[0061] The second end of the parallel module is connected to the input end of the load module, and the parallel module is used to supply power to the load module and / or the energy storage module.

[0062] As an optional implementation, the parallel module includes a parallel cabinet and a power distribution skid;

[0063] The second end of the power generation module and the second end of the energy storage module are both connected to the input end of the parallel cabinet through the first transmission line, and the first voltage output by the first transmission line is greater than the preset first voltage threshold.

[0064] The third end of the power generation module and the third end of the energy storage module are both connected to the input end of the busbar. The output end of the busbar is connected to the input end of the distribution skid and the input end of the parallel cabinet, respectively. The busbar is used to provide a second voltage to the distribution skid and the parallel cabinet. The second voltage is less than a preset second voltage threshold.

[0065] The output terminal of the parallel cabinet is connected to the input terminal of the power distribution skid via the first power transmission line and the second power transmission line; the third voltage output by the second power transmission line is less than the second voltage threshold.

[0066] The output end of the power distribution skid is connected to the input end of the load module.

[0067] As an optional implementation, the load module includes a low-voltage load sub-module and a medium-voltage load sub-module;

[0068] The output end of the power distribution skid is connected to the input end of the medium-voltage load sub-module via the first power transmission line;

[0069] The output end of the power distribution skid is connected to the input end of the low-voltage load sub-module via the second power transmission line.

[0070] Thirdly, this application provides a control device for a power supply system, applied to a control module in the power supply system. The power supply system includes the control module, a parallel operation module, at least one generator module, at least one energy storage module, and a load module. The parallel operation module is used to supply power to the load module. The device includes:

[0071] The first acquisition module is used to acquire the current total load power of the load module during the process of the parallel module supplying power to the load module;

[0072] The second acquisition module is used to acquire the operating mode of each of the power generation modules and / or energy storage modules that are currently in operation;

[0073] The determination module is used to determine the power supply of each of the currently operating power generation modules and / or energy storage modules based on the total load power and the operating mode.

[0074] A control module is used to control the power generation module and / or the energy storage module to supply power to the parallel module according to the corresponding power supply power. Attached Figure Description

[0075] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0076] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0077] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0078] Figure 1 is a schematic diagram of a power supply system provided in an embodiment of this application;

[0079] Figure 2 is a schematic diagram of another power supply system provided in an embodiment of this application;

[0080] Figure 3 is a flowchart of an embodiment of a power supply system control method provided in this application;

[0081] Figure 4 is a power supply schematic diagram of a power supply system provided in an embodiment of this application;

[0082] Figure 5 is a flowchart of an embodiment of a control method for a power supply system provided in this application;

[0083] Figure 6 is a flowchart of an embodiment of a control method for a power supply system provided in this application;

[0084] Figure 7 is a flowchart of an embodiment of a control method for a power supply system provided in this application;

[0085] Figure 8 is a flowchart of an embodiment of a power supply system control method provided in this application;

[0086] Figure 9 is a block diagram of an embodiment of a control device for a power supply system provided in this application;

[0087] Figure 10 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0088] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0089] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0090] To address the technical problem of low gas-to-electricity ratio caused by long idling and low-load operation times during power supply from a single gas turbine generator set, resulting in excess power that cannot be released, this application provides a control method, power supply system, and device for a power supply system. This system provides power by incorporating at least one power supply module and at least one energy storage module. Based on this, when the power supply system supplies power to a load module, multiple power supply modules and multiple energy storage modules can work together to provide power. The system can rationally allocate power to the currently operating power supply and energy storage modules according to the total load power of the load module, allowing the power supply module to operate at full load as much as possible, thus improving its power supply efficiency. Furthermore, due to the presence of multiple energy storage modules, excess power generated by the power supply module can be stored in these modules, thus avoiding energy waste and efficiency reduction. This achieves energy conservation while improving the power supply efficiency of the power supply module, thereby providing power to the load module more efficiently and improving energy utilization.

[0091] To facilitate understanding of the power supply system control method provided in this application, the following is an example of the power supply system involved in this method:

[0092] Referring to Figure 1, it is a schematic diagram of the structure of a power supply system provided in an embodiment of this application. As shown in Figure 1, the power supply system 10 may include: a control module 11, a parallel module 12, a power generation module set 13, an energy storage module set 14, and a load module 15.

[0093] Furthermore, the aforementioned set of power generation modules 13 may include at least one power generation module: power generation module 131, power generation module 132, ..., power generation module 13N, etc., where N is a positive integer greater than 2.

[0094] The aforementioned set of energy storage modules 14 may include at least one energy storage module: energy storage module 141, energy storage module 142, ..., energy storage module 14N, etc., where N is a positive integer greater than 2.

[0095] The control terminal C of the control module 11 can be connected to the first terminal P1 of at least one power generation module (e.g., power generation module 131, power generation module 132, ..., and / or power generation module 13N, as shown in Figure 1, taking power generation modules 131, ..., 13N as examples) and the first terminal F1 of at least one energy storage module (e.g., energy storage module 141, energy storage module 142, ..., energy storage module 14N, etc.) in the energy storage module set. The connection between the control module 11 and the power generation and energy storage modules can be a communication connection. The first terminal P1 is the input terminal for receiving control signals in the power generation module, and the first terminal F1 is the input terminal for receiving control signals in the energy storage module.

[0096] The second terminal P2 of each power generation module in the aforementioned power generation module set 13 and the second terminal F2 of each energy storage module in the energy storage module set 14 can both be used to connect to the first terminal B1 of the aforementioned parallel module 12. At least two target modules in the aforementioned power generation module set 13 and energy storage module set 14 supply power to the parallel module 12, and the target modules can be power generation modules and / or energy storage modules. The second terminal P2 is the power output terminal of the power generation module, the second terminal F2 is the power output terminal of the energy storage module, and the first terminal B1 is the power receiving terminal of the parallel module 12.

[0097] The second terminal B2 of the parallel module 12 can be connected to the input terminal I1 of the load module 15. The parallel module 12 can be used to supply power to the load module 15 and / or the energy storage modules in the energy storage module set 14. The second terminal B2 is the power output terminal of the parallel module 12, and the input terminal I1 is the power input terminal of the load module 15.

[0098] Furthermore, the aforementioned power generation module set 13 may include power generation module 131, power generation module 132, ..., power generation module 13N. Each of the aforementioned power generation modules may include a gas turbine generator set, which may include a gas turbine and a generator, and can generate electrical energy by burning fuel. This application embodiment does not limit the type and number of the aforementioned power generation modules. Wherein, N is a positive integer greater than or equal to 2.

[0099] Furthermore, the aforementioned power generation module set 13 may include a controller, which can be used to interact with the energy storage module set 14 and the control module 11 to exchange data, such as power supply efficiency, operating status, or operating mode. Each power generation module 13 may also correspond to a first controller; this embodiment of the application does not impose any limitations on this.

[0100] The aforementioned set of energy storage modules 14 may include energy storage modules 141, 142, ..., 14N. Each of these energy storage modules can be an energy storage system used to supply power to the outside through pre-stored electrical energy. Here, N is a positive integer greater than or equal to 2.

[0101] Furthermore, the aforementioned energy storage module set 14 or each energy storage module may correspond to an energy storage BMS (Battery Management System) control system, an energy storage PCS (Process Control System) control system, an energy storage EMS system, etc. The aforementioned energy storage BMS control system can be used to control the power of the energy storage module set 14, the aforementioned energy storage PCS control system can be used to control the power supply or charging process of the energy storage module set 14, and the aforementioned energy storage EMS system can be used to control the operating status, operating mode, and power supply efficiency of the energy storage modules according to the control commands sent by the control module 11.

[0102] The control module 11 described above can be either hardware or software that supports network connectivity to provide various network services. When the control module 11 is hardware, it can support various electronic devices with displays, including but not limited to smartphones, tablets, laptops, and desktop computers; Figure 1 uses a desktop computer as an example only. When the control module 11 is software, it can be installed on the aforementioned electronic devices. In this embodiment, the control module 11 can establish communication with the power generation module set 13 and the energy storage module set 14 by installing corresponding applications.

[0103] Optionally, the control module 11 can be used to control the operating status, operating mode, and power supply of each power generation module in the power generation module set 13 and each energy storage module in the energy storage module set 14. The control module 11 may include an EMS (Energy Management System) (for controlling the operating status, operating mode, and power supply of each power generation module and energy storage module), a data acquisition system (for collecting the operating status, operating mode, or power supply of each power generation module and energy storage module), and an energy storage operation interface (through which users can control the operating status and operating mode of each energy storage module). The control module 11 can communicate with the power generation module set 13 and the power generation module set 14 via a switch.

[0104] The aforementioned parallel module 12 can be used to combine the power generation module set 13 and the energy storage module set 14 to supply power to the load module 15. It can be a parallel cabinet or other equipment used to combine multiple power sources to supply power to the load. This application embodiment does not limit this.

[0105] The power supply system provided in this application includes a control module, a set of power generation modules, a set of energy storage modules, a parallel module, and a load module. The set of power generation modules may include at least one power generation module, and the set of energy storage modules may include at least one energy storage module. Furthermore, the control terminal of the control module can be used to control the power supply power of the power generation modules in the set of power generation modules and the energy storage modules in the set of energy storage modules. Based on this, when the power supply system supplies power to the load module, it can reasonably coordinate power supply through at least one power generation module and at least one energy storage module, so that the power generation module can operate at full load as much as possible, improving the power supply efficiency of the power generation module. Moreover, due to the presence of multiple energy storage modules, the excess electricity generated by the power generation module can be stored in the energy storage module, thus avoiding the waste of electricity, saving electricity while improving the power supply efficiency of the power generation module, thereby providing power to the load module more efficiently and improving the utilization rate of electricity.

[0106] Further, referring to Figure 2, is a schematic diagram of another power supply system provided in an embodiment of this application. As shown in Figure 2, the above-mentioned parallel module 12 may include a parallel cabinet 21 and a power distribution skid 22.

[0107] Based on this, the second terminal P2 of the power generation module (e.g., power generation module 131, power generation module 132, ..., power generation module 13N, etc.) and the second terminal F2 of the energy storage module (e.g., energy storage module 141, energy storage module 142, ..., energy storage module 14N, etc.) are both connected to the input terminal I1 of the cabinet via the first transmission line 23. The first voltage output by the first transmission line 23 is greater than a preset first voltage threshold. This first voltage threshold can be 10KV or other values. It is understood that when the first voltage is greater than the first voltage threshold, it indicates that the first transmission line 23 is a high-voltage line.

[0108] The third terminal P3 of the power generation module and the third terminal F3 of the energy storage module are both connected to the input terminal M1 of the busbar. The output terminal M2 of the busbar is connected to the input terminal M1 of the distribution skid 22 and the input terminal M1 of the parallel cabinet 21, respectively. The busbar can be used to provide a second voltage to the distribution skid 22 and the parallel cabinet 21. This second voltage can be less than a preset second voltage threshold. The second voltage threshold can be 1KV. It is understood that when the second voltage is less than the second voltage threshold, it indicates that the second voltage is a low voltage. Among them, the third terminal P3 can be the low-voltage power output terminal of the power generation module. The difference between the third terminal P3 and the second terminal P2 is that the second terminal P2 is the output terminal of the power generation module for medium-voltage or high-voltage power, while the third terminal P3 is the low-voltage power output terminal. The third terminal F3 can be the low-voltage power output terminal of the energy storage module. The difference between the third terminal F3 and the second terminal F2 is that the second terminal P2 is the output terminal of the energy storage module for medium-voltage or high-voltage power, while the third terminal F3 is the low-voltage power output terminal. The input terminal M1 of the bus is the power input terminal of the bus, and the output terminal M2 of the bus is the power output terminal of the bus. The input terminal M1 of the distribution skid 22 is the power input terminal of the distribution skid 22, and the input terminal M1 of the parallel cabinet 21 is the power input terminal of the parallel cabinet 21.

[0109] The output terminal M2 of the aforementioned parallel cabinet 21 is connected to the input terminal M1 of the distribution skid 22 via the aforementioned first and second transmission lines. The third voltage output by the aforementioned second transmission line is less than the aforementioned second voltage threshold. It can be understood that when the third voltage is less than the aforementioned second voltage threshold, it indicates that the aforementioned second transmission line is a low-voltage line. The output terminal M2 of the aforementioned parallel cabinet 21 is the power output terminal of the parallel cabinet 21.

[0110] The output terminal M2 of the aforementioned power distribution skid 22 is connected to the input terminal M1 of the aforementioned load module 15. Specifically, the output terminal M2 of the aforementioned power distribution skid 22 is the power output terminal of the power distribution skid 22.

[0111] Furthermore, the load module 15 may include a low-voltage load sub-module and a medium-voltage load sub-module. The low-voltage load sub-module represents a low-voltage voltage consumed that is less than the second voltage threshold, such as domestic electricity used during well site operations. The medium-voltage load sub-module represents a medium-voltage voltage consumed that is higher than the first voltage threshold, such as electric drive equipment used during well site operations.

[0112] For example, suppose voltage levels can be divided into 220V, 380V, 10kV, 24kV, 35kV, 110kV, 220kV, 500kV, 800kV, and 1000kV. Further assume that the low-voltage range is below 400V, the medium-voltage range is 10kV to 35kV, the high-voltage range is 110kV to 500kV, and the ultra-high-voltage range is above 500kV. Based on this, the first voltage threshold can be 10kV, and the second voltage threshold can be 400V. Therefore, the voltage consumed by the medium-voltage load sub-module can be greater than the first voltage threshold, but also less than a third voltage threshold, which can be 110kV or other values; this application does not limit this.

[0113] Based on this, the output terminal M2 of the aforementioned power distribution skid 22 can be connected to the input terminal of the aforementioned medium-voltage load sub-module via the aforementioned first transmission line. The output terminal M2 of the aforementioned power distribution skid 22 can be connected to the input terminal of the aforementioned low-voltage load sub-module via the aforementioned second transmission line.

[0114] In the power supply system provided in this application embodiment, the parallel module may include a parallel cabinet and a distribution skid. The parallel cabinet and the distribution skid can respectively receive medium-voltage electricity and low-voltage electricity provided by the power generation module and the energy storage module, so as to provide medium-voltage electricity to the medium-voltage load equipment in the load module and low-voltage electricity to the low-voltage load equipment in the load module. This achieves energy saving while improving the power supply efficiency of the power supply module, thereby providing power to the load module more efficiently and improving the utilization rate of power.

[0115] Currently, existing power supply systems typically include a single generator, which supplies power to the load module. This results in a significant waste of electrical energy and low thermal efficiency when the load module requires low power.

[0116] Based on this, the power supply system 10 provided in this application embodiment may include a power generation module set 13 and an energy storage module set 14. During the process of supplying power to the load module, the control module 11 can control different combinations and operating modes of the power generation and energy storage modules to supply power to the parallel module 12, thereby enabling the parallel module 12 to efficiently supply power to the load module. Compared with existing power supply systems, this power supply system 10 can save energy while improving the power supply efficiency of the power supply modules, thus providing power to the load module more efficiently and improving energy utilization.

[0117] Referring to Figure 3, this is a flowchart illustrating an embodiment of a control method for a power supply system provided in this application. As an embodiment, the flowchart shown in Figure 3 can be applied to a control module in a power supply system. This power supply system may include a control module, a parallel operation module, at least one generator module, at least one energy storage module, and a load module. The parallel operation module can be used to supply power to the load module. The power supply system can be exemplified by the power supply system 10 shown in Figure 1. As shown in Figure 3, the process may include the following steps:

[0118] Step 301: During the process of the parallel module supplying power to the load module, obtain the current total load power of the load module.

[0119] Step 302: Obtain the operating mode of each currently running power generation module and / or energy storage module.

[0120] The following provides a unified explanation of steps 301 and 302:

[0121] The aforementioned power supply system refers to a system for outputting electrical energy (e.g., power supply system 10 shown in Figure 1), which may include a control module, a parallel module, at least one generator module, at least one energy storage module, and a load module. Specifically, the control module can be used to control the power output of the generator module and the energy storage module, such as control module 11 shown in Figure 1; the parallel module can be used to supply power to the load module using the electrical energy provided by the generator module and the energy storage module, such as parallel module 12 shown in Figure 1; the generator module refers to a module with generator generation function, which can generate electricity by burning fuel (oil, gas, etc.), such as generator modules 131, 132, ..., 13N shown in Figure 1, which may be gas turbine generator modules; the energy storage module refers to a module with specific electrical energy storage function, which can be used to store electrical energy and supply power externally using the stored electrical energy, such as energy storage modules 141, 142, ..., 14N shown in Figure 1.

[0122] The aforementioned load module refers to electrical equipment, that is, equipment that requires power from the aforementioned power supply system. For example, see Figure 4, which is a power supply schematic diagram of a power supply system provided in an embodiment of this application. As shown in Figure 4, the power supply system may include multiple generator sets #1, #2, ..., #N, and energy storage systems #1, #2, ..., #N. The aforementioned multiple generator sets and energy storage systems can supply power to fuel equipment, multiple electric drive equipment, and domestic electricity during well site operations. Therefore, the aforementioned fuel equipment, multiple electric drive equipment, and domestic electricity can all serve as load modules of the aforementioned power supply system.

[0123] Furthermore, the aforementioned multiple generator sets and multiple energy storage systems can be connected to corresponding busbars, and different voltages, such as high voltage and low voltage, can be provided to different load devices in the aforementioned load modules through the busbars.

[0124] The total load power mentioned above refers to the total power required by the current load module, while power refers to the work done by the current per unit time.

[0125] The above operating modes refer to the operating modes corresponding to the current connection status of the energy storage module with the power supply system, which may include grid-connected operation and off-grid operation.

[0126] In this embodiment of the application, during the process of the power supply system supplying power to the load module, in order to supply power to the load module more accurately, the control module can first determine the current total load power of the load module.

[0127] As an optional implementation, if there is only one load module, the load power corresponding to that load module can be directly obtained and the load power can be determined as the current total load power of the load module.

[0128] As another optional implementation, when there are multiple load modules, the load power of each load module can be obtained, and the load power of each load module can be added together to obtain the current total load power of the load modules.

[0129] In one embodiment, the control module can control the operating mode of each power generation module and each energy storage module in the power supply system.

[0130] As an optional implementation, the user can control the operating mode of each power generation module and energy storage module through this control module.

[0131] As an exemplary implementation, the control module may have a visual interface that displays the operating status and mode of each power generation module and energy storage module. Based on this, the user can modify the operating status and mode of each power generation module and energy storage module through the visual interface. After receiving the operating status and mode settings for each power generation module and energy storage module from the user through the visual interface, the control module can generate corresponding control commands for each module and send these commands to the corresponding modules, so that the modules receiving the control commands operate according to the corresponding operating status and mode. The operating status refers to whether the corresponding module is running, such as running or not running.

[0132] Based on the above settings, in this embodiment of the application, after determining the total load power currently required by the load module, in order to efficiently provide the required total load power to the load module, the control module can obtain the operating mode of each power generation module and / or each energy storage module currently running in the power supply system.

[0133] As an optional implementation, the control module can first obtain the current operating status of each power generation module and each energy storage module, and determine the currently operating power generation module and / or energy storage module based on the current operating status of each module.

[0134] As an exemplary implementation, the current status identifier of each power generation module and each energy storage module can be obtained. When the status identifier indicates that the corresponding module is running (e.g., status identifier is 1), it can be determined that the module corresponding to the status identifier is running; when the status identifier indicates that the corresponding module is not running (e.g., status identifier is 0), it can be determined that the module corresponding to the status identifier is not running.

[0135] Based on this, after determining the currently operating power generation modules and energy storage modules, the operating mode of each currently operating power generation module and / or energy storage module can be obtained.

[0136] In one implementation, in order to save energy and improve the power generation efficiency of the power generation module, the currently operating module can be multiple, and includes at least an energy storage module. For example, the currently operating module may be at least one power generation module and at least one energy storage module, or at least two energy storage modules.

[0137] As another implementation method, when the load module requires a large amount of electrical energy, multiple power generation modules can be operated to supply power to the load module, that is, the currently operating modules are determined to be multiple power generation modules.

[0138] As an optional implementation, the mode identifier of each currently operating power generation module and / or energy storage module can be obtained, and the operating mode of each power generation module and / or energy storage module can be determined based on the mode identifier.

[0139] Optionally, when the above-mentioned mode identifier is the first identifier, it can be determined that the operating mode of the module corresponding to the mode identifier is the grid-connected operating mode. The above-mentioned first identifier can be a number (e.g., 1), a symbol, or a letter, etc., and this application embodiment does not limit it.

[0140] Optionally, when the aforementioned mode identifier is the second identifier, it can be determined that the operating mode of the module corresponding to the mode identifier is the off-grid operating mode. The aforementioned second identifier can be a number (e.g., 0), a symbol, or a letter, etc., and this application embodiment does not limit this.

[0141] Step 303: Based on the total load power and the operating mode described above, determine the power supply of each currently operating power generation module and / or energy storage module.

[0142] Step 304: Control the power generation module and / or energy storage module to supply power to the parallel module according to the corresponding power supply power.

[0143] The following provides a unified explanation of steps 303 and 304:

[0144] The aforementioned power supply efficiency refers to the work done by the current per unit time when the power generation module or energy storage module supplies power to the outside. Different modules (power generation module and energy storage module) may correspond to the same power supply or different power supply; this application embodiment does not impose such limitations.

[0145] In this embodiment, after determining the total load power required by the current load module and the current operating mode of each currently operating power generation module and / or energy storage module, the control module can determine the power supply of each currently operating power generation module and / or energy storage module based on the total load power and the operating mode of each power generation module and / or energy storage module. The power supply power corresponding to each power supply module and / or energy storage module may be the same or different; this embodiment does not impose any restrictions on this.

[0146] The specific method for determining the power supply of each currently operating power generation module and / or energy storage module based on the total load power and operating mode will be explained in the following text through the process shown in Figure 5, and will not be detailed here.

[0147] Subsequently, the operating power generation module and / or energy storage module can be controlled to supply power to the parallel module according to the corresponding power supply determined above, so that the parallel module supplies power to the current load module.

[0148] The technical solution provided in this application embodiment obtains the current total load power of the load module and the operating mode of each currently running power generation module and / or energy storage module during the process of the parallel module supplying power to the load module. Based on the total load power and operating mode, the power supply power of each currently running power generation module and / or energy storage module is determined, and the power generation module and / or energy storage module is controlled to supply power to the parallel module according to the corresponding power supply power. This technical solution utilizes multiple power supply modules and multiple energy storage modules within the power supply system. Based on this, when the power supply system supplies power to the load module, it can coordinate power supply through at least one power supply module and at least one energy storage module. It can rationally allocate power to the currently operating power supply module and energy storage module according to the total load power of the load module, allowing the power supply module to operate at full load as much as possible, thus improving its power supply efficiency. Furthermore, due to the presence of multiple energy storage modules, excess electricity generated by the power supply module can be stored in these modules, thus avoiding energy waste and efficiency reduction. This achieves energy conservation while improving the power supply efficiency of the power supply module, thereby providing power to the load module more efficiently and improving energy utilization.

[0149] Referring to Figure 5, a flowchart of an embodiment of a power supply system control method provided in this application is shown. Based on the flowchart shown in Figure 3, Figure 5 describes how, when at least two energy storage modules are currently operating, the power supply capacity of each currently operating generation module and / or energy storage module is determined according to the total load power and operating mode. As shown in Figure 5, this process may include the following steps:

[0150] Step 501: If there are at least two energy storage modules currently in operation, determine whether the operating modes of the at least two energy storage modules currently in operation are both off-grid operation. If yes, proceed to step 502; otherwise, proceed to step 503.

[0151] Step 502: Determine the power supply efficiency of each energy storage module based on the total load power mentioned above.

[0152] The following provides a unified explanation of steps 501 and 502:

[0153] The aforementioned off-grid operation refers to the state in which the energy storage module is currently not connected to the power supply system via the network.

[0154] In this embodiment of the application, if it is determined that all currently operating modules are energy storage modules, it can be further determined whether all currently operating energy storage modules are off-grid operating.

[0155] Optionally, if it is determined that all currently operating energy storage modules are operating off-grid, the control module can allocate corresponding power supply to the off-grid energy storage modules according to the total load power.

[0156] As an optional implementation, the power supply to the off-grid energy storage modules can be evenly distributed based on the total load power. As one implementation, a first number of currently operating energy storage modules can be determined, and the total load power can be divided by this first number to obtain the average load power. Then, the average load power can be determined as the power supply corresponding to each currently operating energy storage module.

[0157] As an alternative implementation, a first remaining amount of electricity can be determined for each energy storage module currently in operation. This first remaining amount of electricity can be the percentage of electricity currently stored in the corresponding energy storage module, such as 80% of the electricity.

[0158] Subsequently, the first power generation ratio of all currently operating energy storage modules can be determined based on the first remaining power of each energy storage module. This first power generation ratio can be obtained by comparing the first remaining power of each energy storage module. Alternatively, this first power generation ratio can be pre-set based on the storage capacity of each energy storage module; this embodiment does not impose any limitations on this.

[0159] Finally, the power supply of each energy storage module currently in operation can be determined based on the total load power and the first power generation ratio. As one implementation, for each energy storage module, the total load power can be multiplied by the corresponding ratio value to obtain the power supply of that module. For example, assuming the first power generation ratio is: Energy Storage Module 1: Energy Storage Module 2: Energy Storage Module 3 = 2:1:3, then the ratio value for Energy Storage Module 1 is 1 / 3, the ratio value for Energy Storage Module 2 is 1 / 6, and the ratio value for Energy Storage Module 3 is 1 / 2. Based on this, the power supply of Energy Storage Module 1 is: Total Load Power * 1 / 3; the power supply of Energy Storage Module 2 is: Total Load Power * 1 / 6; and the power supply of Energy Storage Module 3 is: Total Load Power * 1 / 2.

[0160] Optionally, if it is determined that not all currently operating energy storage modules are operating off-grid, step 503 can be performed.

[0161] Step 503: If it is determined that at least two energy storage modules are currently in operation, including a first grid-connected energy storage module in grid-connected operation mode and a first off-grid energy storage module in off-grid operation mode, the first power supply efficiency of each first grid-connected energy storage module is obtained, wherein the first grid-connected energy storage module determines the first power supply power according to the received power command and operates according to the first power supply power.

[0162] The aforementioned first grid-connected energy storage module refers to the energy storage module currently in operation that is operating in grid-connected mode.

[0163] The aforementioned first off-grid energy storage module refers to the energy storage module currently in operation that operates in off-grid mode.

[0164] The aforementioned first power supply refers to the power supply operated by the first grid-connected energy storage module according to the received power command, which can be a rated power. When the control module detects the first grid-connected energy storage module operating on the grid, it can send a power command to the first grid-connected energy storage module to operate according to a preset rated power (i.e., the first power supply). This power command can be a pre-stored command or a command issued by the user through the control module; this application embodiment does not impose any limitations on this.

[0165] In this embodiment of the application, when it is determined that the currently operating energy storage module includes a first grid-connected energy storage module, a power command for supplying power according to a first power supply can be sent to the first grid-connected energy storage module, or it can be determined whether the first grid-connected energy storage module is already operating according to the first power supply in the power command received from the outside. The first power supply may be less than the total load power.

[0166] Optionally, after determining the first power supply power corresponding to each first grid-connected energy storage module, the first power supply power of each first grid-connected energy storage module can be directly obtained.

[0167] Step 504: Based on the total load power and the first power supply power of each first grid-connected energy storage module, determine the first remaining load power corresponding to all first off-grid energy storage modules.

[0168] Step 505: Determine the power supply of each first off-grid energy storage module based on the first remaining load power mentioned above.

[0169] The following provides a unified explanation of steps 504 and 505:

[0170] The aforementioned first remaining load power refers to the total load power corresponding to the first off-grid energy storage module currently in operation.

[0171] In this embodiment of the application, after determining the first power supply power corresponding to the currently operating first grid-connected energy storage module, the first remaining load power corresponding to all first off-grid energy storage modules can be determined based on the total load power and the first power supply power corresponding to each first grid-connected energy storage module.

[0172] As an optional implementation, the sum of the first power supplies corresponding to all the first grid-connected energy storage modules can be determined to obtain the total first power supply. Then, the total first power supply can be subtracted from the total load power to obtain the first remaining load power.

[0173] Then, the power supply of each first off-grid energy storage module can be determined based on the aforementioned first remaining load power.

[0174] As an optional implementation, a second number of the first off-grid energy storage modules currently in operation can be determined, and the first remaining load power can be divided by the second number to obtain the power supply power of each first off-grid energy storage module.

[0175] As an alternative implementation, a second remaining power capacity can be determined for each first off-grid energy storage module. This second remaining power capacity can be the remaining power capacity of the currently stored SOC (System on Chip) in the first off-grid energy storage module, for example, 60% of the power capacity.

[0176] Subsequently, the second power generation ratio of all currently operating first off-grid energy storage modules can be determined based on the second remaining power of each first off-grid energy storage module. This second power generation ratio can be obtained by comparing the second remaining power of each first off-grid energy storage module. Alternatively, this second power generation ratio can be pre-set based on the storage capacity of each first off-grid energy storage module; this embodiment does not impose any limitations on this.

[0177] Finally, the power supply of each currently operating first off-grid energy storage module can be determined based on the aforementioned first remaining load power and second power generation ratio. As one implementation method, for each energy storage module, the power supply corresponding to that first off-grid energy storage module can be obtained by multiplying the aforementioned first remaining load power by the ratio value corresponding to that second off-grid energy storage module. For example, assuming the aforementioned second power generation ratio is: First off-grid energy storage module 1 : First off-grid energy storage module 2 : First off-grid energy storage module 3 = 3 : 2 : 1, then the ratio value corresponding to first off-grid energy storage module 1 is 1 / 2, the ratio value corresponding to first off-grid energy storage module 2 is 1 / 3, and the ratio value corresponding to first off-grid energy storage module 3 is 1 / 6. Based on this, the power supply of first off-grid energy storage module 1 is: first remaining load power * 1 / 2; the power supply of first off-grid energy storage module 2 is: first remaining load power * 1 / 3; and the power supply of first off-grid energy storage module 3 is: first remaining load power * 1 / 6.

[0178] Furthermore, when the currently operating modules include a first grid-connected energy storage module operating on the grid and a first off-grid energy storage module operating off-grid, the control module can use the first off-grid energy storage module operating off-grid to charge the first grid-connected energy storage module operating on the grid.

[0179] As an optional implementation, it can be determined whether there is a target first grid-connected energy storage module to be charged among the currently operating first grid-connected energy storage modules.

[0180] As an exemplary implementation, upon receiving an externally input charging command, the first grid-connected energy storage module corresponding to the charging command can be identified as the target first grid-connected energy storage module to be charged. The charging command can be input by the user through the control module or remotely through a remote control terminal; this embodiment does not impose any limitations on this.

[0181] As another exemplary implementation, the amount of electricity currently stored in each grid-connected energy storage module can be determined, and if the amount of electricity is determined to be less than a preset electricity threshold, the first grid-connected energy storage module corresponding to the amount of electricity is determined as the target first grid-connected energy storage module to be charged.

[0182] Optionally, if it is determined that there is a target first grid-connected module to be charged, the charging power of the target first grid-connected energy storage module can be determined.

[0183] As an exemplary implementation, the pre-set charging power of the target first grid-connected energy storage module can be obtained. As another implementation, the rated discharge power of the target first grid-connected energy storage module can be determined as the charging power.

[0184] As another exemplary implementation, the current power level of the target first grid-connected energy storage module can be determined, and the power to be charged can be determined based on the current power level. In one implementation, the power to be charged of the target first grid-connected energy storage module can be determined based on the current power level (the power capacity can be subtracted from the current power level to obtain the power to be charged), and then the power to be charged can be divided by a preset charging time to obtain the power to be charged.

[0185] Based on this, a charging command can be determined to characterize the power supplied by the aforementioned power, according to the power to be charged.

[0186] Then, the target off-grid energy storage module for charging can be determined from the first off-grid energy storage module.

[0187] As an optional implementation, the first off-grid energy storage module with the largest current stored power can be identified from the first off-grid energy storage modules, and this first off-grid energy storage module can be identified as the target first off-grid energy storage module for charging.

[0188] As an alternative implementation, the currently idle first off-grid energy storage module, or the first off-grid energy storage module that is closest to the target first grid-connected energy storage module, can be identified as the target first off-grid energy storage module.

[0189] Finally, the aforementioned charging command can be sent to the first off-grid energy storage module to enable the first off-grid energy storage module to charge the first grid-connected energy storage module according to the charging power specified in the charging command.

[0190] Furthermore, if it is determined that all currently operating energy storage modules are grid-connected, each grid-connected energy storage module can be controlled to operate according to a target power supply. The target power supply can be a preset power supply or obtained by dividing the total load power by the number of grid-connected energy storage modules.

[0191] The technical solution provided in this application, when there are at least two energy storage modules currently in operation, determines whether the operating modes of the at least two energy storage modules currently in operation are both off-grid operation. If so, the power supply efficiency corresponding to each energy storage module is determined based on the total load power. If not, when it is determined that the at least two energy storage modules currently in operation include a first grid-connected energy storage module operating in grid-connected mode and a first off-grid energy storage module operating in off-grid mode, the first power supply efficiency of each first grid-connected energy storage module is obtained. The first grid-connected energy storage module determines the first power supply power according to the received power command and operates according to the first power supply power. Based on the total load power and the first power supply power of each first grid-connected energy storage module, the first remaining load power corresponding to all first off-grid energy storage modules is determined. Based on the first remaining load power, the power supply power of each first off-grid energy storage module is determined. This technical solution dynamically determines the power supply of each energy storage module based on its grid-connected and off-grid operation modes, when all currently operating modules are energy storage modules. This achieves energy savings while improving the power supply efficiency of the power supply modules, thus providing more efficient power to the load modules and increasing the utilization rate of electricity.

[0192] Referring to Figure 6, a flowchart illustrating another embodiment of the control method for a power supply system provided in this application is shown. Based on the flowchart in Figure 3, Figure 6 describes how, when the currently operating modules include at least one power generation module and at least one energy storage module, the power supply capacity of each currently operating power generation module and energy storage module is determined according to the total load power and the operating mode of each module. As shown in Figure 6, this process may include the following steps:

[0193] Step 601: Determine whether the operating mode of the currently running power generation module is grid-connected. If yes, proceed to step 602; otherwise, proceed to step 610.

[0194] Step 602: Determine whether the operating mode of the currently running energy storage modules is off-grid operation. If yes, proceed to step 603; otherwise, proceed to step 606.

[0195] Step 603: Obtain the second power supply of each currently operating power generation module, wherein the power generation module can determine the second power supply according to the received power command and operate according to the second power supply.

[0196] Step 604: Based on the total load power and the second power supply power of each power generation module, determine the second remaining load power corresponding to all currently operating energy storage modules.

[0197] Step 605: Determine the power supply of each energy storage module currently in operation based on the second remaining load power mentioned above.

[0198] The following provides a unified explanation of steps 601 to 605:

[0199] The aforementioned second power supply refers to the power supply operated by the grid-connected power generation module according to the received power command. This power supply can be a rated power. When the control module detects a grid-connected power generation module, it can send a power command to the module to operate according to a preset rated power (i.e., the second power supply). This power command can be a pre-stored command or a command issued by the user through the control module; this application embodiment does not impose any limitations on this.

[0200] The aforementioned second remaining load power refers to the total load power corresponding to all currently operating off-grid energy storage modules.

[0201] In this embodiment of the application, if it is determined that the currently operating modules include power generation modules and energy storage modules, it can be determined whether the operating mode of the currently operating power generation modules is grid-connected. Optionally, if yes, then step 602 is executed to further determine whether the currently operating energy storage modules are all off-grid operated. Optionally, if no, then step 610 is executed.

[0202] In one embodiment, if it is determined that all currently operating power generation modules are operating in grid-connected mode and all currently operating energy storage modules are operating in off-grid mode, and if it is determined that the currently operating modules include grid-connected power generation modules, a power command for supplying power according to a second power supply can be sent to that power generation module, or it can be determined whether the power generation module is already operating according to the second power supply in the power command received from the outside. The second power supply may be less than the total load power.

[0203] Optionally, after determining the second power supply power corresponding to each power generation module, the second power supply power of each power generation module can be directly obtained.

[0204] In this embodiment of the application, after determining the second power supply corresponding to the currently operating power generation module, the second remaining load power corresponding to all currently operating off-grid energy storage modules can be determined based on the total load power and the second power supply corresponding to each power generation module.

[0205] As an optional implementation, the sum of the second power supplies corresponding to all power generation modules can be determined to obtain the total second power supply. Then, the total second power supply can be subtracted from the total load power to obtain the second remaining load power.

[0206] Then, the power supply of each off-grid energy storage module can be determined based on the second remaining load power mentioned above.

[0207] As an optional implementation, a third number of currently operating energy storage modules can be determined, and the second remaining load power can be divided by the third number to obtain the power supply power of each energy storage module.

[0208] As an alternative implementation, a third remaining energy level can be determined for each energy storage module. This third remaining energy level can be the currently stored remaining energy level of the energy storage module currently operating off-grid, for example, 60% of the energy.

[0209] Subsequently, the third power generation ratio of all currently operating energy storage modules can be determined based on the third remaining power of each energy storage module. This third power generation ratio can be obtained by comparing the third remaining power of each energy storage module. Alternatively, this third power generation ratio can be pre-set based on the storage capacity of each energy storage module; this embodiment does not impose any limitations on this.

[0210] Finally, the power supply of each energy storage module currently operating off-grid can be determined based on the aforementioned second remaining load power and third generation ratio. As one implementation method, for each energy storage module, the aforementioned second remaining load power can be multiplied by the corresponding ratio value to obtain the power supply of that energy storage module. For example, assuming the aforementioned third generation ratio is: Energy Storage Module 1: Energy Storage Module 2: Energy Storage Module 3 = 3:2:1, then the ratio value corresponding to Energy Storage Module 1 is 1 / 2, the ratio value corresponding to Energy Storage Module 2 is 1 / 3, and the ratio value corresponding to Energy Storage Module 3 is 1 / 6. Based on this, the power supply of Energy Storage Module 1 is: second remaining load power * 1 / 2; the power supply of Energy Storage Module 2 is: second remaining load power * 1 / 3; and the power supply of Energy Storage Module 3 is: second remaining load power * 1 / 6.

[0211] Step 606: If it is determined that at least two energy storage modules are currently in operation, including a second grid-connected energy storage module in grid-connected operation mode and a second off-grid energy storage module in off-grid operation mode, the third power supply power of each currently operating power generation module is obtained, wherein the power generation module determines the third power supply power according to the received power command and operates according to the aforementioned third power supply power.

[0212] Step 607: Obtain the fourth power supply of each second grid-connected energy storage module, wherein each second grid-connected energy storage module determines the fourth power supply according to the received power command and operates according to the fourth power supply.

[0213] Step 608: Based on the total load power, the third power supply corresponding to each power generation module, and the fourth power supply of each second grid-connected energy storage module, determine the third remaining load power corresponding to all second off-grid energy storage modules.

[0214] Step 609: Determine the power supply of each second off-grid energy storage module based on the third remaining load power mentioned above.

[0215] The following provides a unified explanation of steps 606 to 609:

[0216] The aforementioned third power supply refers to the power supply operated by the grid-connected power generation module according to the received power command. This power supply can be a rated power. When the control module detects a grid-connected power generation module, it can send a power command to the module to operate according to a preset rated power (i.e., the third power supply). This power command can be a pre-stored command or a command issued by the user through the control module; this application embodiment does not impose any limitations on this.

[0217] The aforementioned fourth power supply refers to the power supply operated by the currently grid-connected energy storage module according to the received power command. This power supply can be a rated power. When the control module detects a grid-connected energy storage module, it can send a power command to the module to operate at a preset rated power (i.e., the fourth power supply). This power command can be a pre-stored command or a command issued by the user through the control module; this application embodiment does not impose any limitations on this.

[0218] The aforementioned third remaining load power refers to the total load power corresponding to the off-grid energy storage modules currently in operation.

[0219] In this embodiment of the application, when it is determined that the currently operating modules include a grid-connected power generation module and a grid-connected energy storage module (hereinafter referred to as the second grid-connected energy storage module for ease of description), a power command for operating according to a third power supply can be sent to the power generation module, and a power command for operating according to a fourth power supply can be sent to the second grid-connected energy storage module.

[0220] Alternatively, it can be determined whether the aforementioned power generation module is operating according to the third power supply power in the power command received from the outside, and whether the second grid-connected energy storage module is operating according to the fourth power supply power in the power command received from the outside. Both the third and fourth power supply powers can be less than the aforementioned total load power.

[0221] Optionally, after determining the third power supply corresponding to each power generation module, the third power supply of each power generation module can be directly obtained.

[0222] After determining the fourth power supply corresponding to each second grid-connected energy storage module, the fourth power supply of each second grid-connected energy storage module can be directly obtained.

[0223] In this embodiment of the application, after determining the third power supply corresponding to the currently operating power generation module and the fourth power supply corresponding to each second grid-connected energy storage module, and in the case that there are currently second off-grid energy storage modules operating off-grid, the third remaining load power corresponding to all currently operating second off-grid energy storage modules can be determined based on the above total load power, the third power supply corresponding to each power generation module, and the fourth power supply corresponding to each second grid-connected energy storage module.

[0224] As an optional implementation, the sum of the third power supply corresponding to all power generation modules can be determined to obtain the total third power supply, and the sum of the fourth power supply corresponding to all second grid-connected energy storage modules can be determined to obtain the total fourth power supply. Then, the total third power supply and the total fourth power supply can be subtracted from the total load power to obtain the third remaining load power.

[0225] Then, based on the aforementioned third remaining load power, the power supply of each off-grid second off-grid energy storage module can be determined.

[0226] As an optional implementation, a fourth number of currently operating second off-grid energy storage modules can be determined, and the third remaining load power can be divided by the fourth number to obtain the power supply power of each second off-grid energy storage module.

[0227] As an alternative implementation, a fourth remaining energy level can be determined for each second off-grid energy storage module. This fourth remaining energy level can be the remaining energy level corresponding to the currently operating second off-grid energy storage module.

[0228] Subsequently, the fourth power generation ratio of all currently operating second off-grid energy storage modules can be determined based on the fourth remaining power of each second off-grid energy storage module. This fourth power generation ratio can be obtained by comparing the fourth remaining power of each energy storage module. Alternatively, this fourth power generation ratio can be pre-set based on the storage capacity of each second off-grid energy storage module; this embodiment of the application does not impose any limitations on this.

[0229] Finally, the power supply of each second off-grid energy storage module currently operating off-grid can be determined based on the aforementioned third remaining load power and fourth generation ratio. As one implementation method, for each second off-grid energy storage module, the aforementioned third remaining load power can be multiplied by the corresponding ratio value to obtain the power supply of that second off-grid energy storage module. For example, assuming the aforementioned fourth generation ratio is: second off-grid energy storage module 1 : second off-grid energy storage module 2 : second off-grid energy storage module 3 = 3 : 2 : 1, then the ratio value corresponding to second off-grid energy storage module 1 is 1 / 2, the ratio value corresponding to second off-grid energy storage module 2 is 1 / 3, and the ratio value corresponding to second off-grid energy storage module 3 is 1 / 6. Based on this, the power supply of second off-grid energy storage module 1 is: third remaining load power * 1 / 2; the power supply of second off-grid energy storage module 2 is: third remaining load power * 1 / 3; and the power supply of second off-grid energy storage module 3 is: third remaining load power * 1 / 6.

[0230] Step 610: If it is determined that the operating mode of the currently operating power generation module is off-grid operation and the operating mode of the currently operating energy storage module is grid-connected operation, obtain the fifth power supply of each currently operating energy storage module. The energy storage module determines the fifth power supply according to the received power command and operates according to the fifth power supply.

[0231] Step 611: Based on the total load power and the fifth power supply power of each energy storage module, determine the fourth remaining load power corresponding to all currently operating power generation modules.

[0232] Step 612: Determine the amount of electricity generated by the currently operating power generation module.

[0233] Step 613: Divide the fourth remaining load power by the above-mentioned power generation quantity to obtain the power supply power of each power generation module.

[0234] The following provides a unified explanation of steps 610 to 613:

[0235] The aforementioned fifth power supply refers to the power supply operated by the currently grid-connected energy storage module according to the received power command. This power supply can be a rated power. When the control module detects a grid-connected energy storage module, it can send a power command to the module to operate at a preset rated power (i.e., the fifth power supply). This power command can be a pre-stored command or a command issued by the user through the control module; this application embodiment does not impose any limitations on this.

[0236] In this embodiment of the application, when it is determined that the operating mode of the currently operating power generation module is off-grid operation and the operating mode of the currently operating energy storage module is grid-connected operation, the fifth power supply of each currently operating energy storage module can be obtained.

[0237] When it is determined that the currently operating modules include grid-connected energy storage modules, a power command for operating at the fifth power supply can be sent to those energy storage modules. Alternatively, it can be determined whether the aforementioned energy storage modules are already operating at the fifth power supply in the power command received from the outside. The aforementioned fifth power supply can be less than the aforementioned total load power.

[0238] Optionally, after determining the fifth power supply corresponding to each energy storage module, the fifth power supply of each energy storage module can be directly obtained.

[0239] After determining the fifth power supply corresponding to each energy storage module, the fifth power supply of each energy storage module can be directly obtained.

[0240] In this embodiment of the application, after determining the fifth power supply corresponding to the currently operating energy storage module, the fourth remaining load power corresponding to all currently operating power generation modules can be determined.

[0241] As an optional implementation, the sum of the fifth power supplies corresponding to all energy storage modules can be determined to obtain the total fifth power supply. Then, the total fifth power supply can be subtracted from the total load power to obtain the fourth remaining load power.

[0242] Then, based on the fourth remaining load power mentioned above, the power supply power of each off-grid power generation module can be determined.

[0243] As an optional implementation, the number of generators currently in operation can be determined, and the power of the fourth remaining load can be divided by the number of generators to obtain the power supply of each generator module.

[0244] Furthermore, in the case where the currently operating modules include multiple power generation modules and multiple energy storage modules, the control module can use the power generation modules to charge the grid-connected energy storage modules.

[0245] As an optional implementation, one or more target energy storage modules to be charged can be identified among the energy storage modules currently operating in grid-connected mode.

[0246] As an exemplary implementation, upon receiving an externally input charging command, the grid-connected energy storage module corresponding to the charging command can be identified as the target energy storage module to be charged. The charging command can be input by the user through the control module or remotely through a remote control terminal; this application embodiment does not impose any limitations on this.

[0247] As another exemplary implementation, the current stored power of each grid-connected energy storage module can be determined, and if the power is determined to be less than a preset power threshold, the energy storage module corresponding to the power is determined as the target energy storage module to be charged.

[0248] Optionally, if it is determined that there is a target module to be charged, the charging power of the target energy storage module can be determined.

[0249] As an exemplary implementation, if the target energy storage module has a preset charging power, the target energy storage module can be charged separately based on the preset charging power.

[0250] As another exemplary implementation, when the target energy storage module does not have a pre-set charging power, the current stored capacity ratio of each target energy storage module can be determined. Based on the capacity ratio of each target energy storage module, a target charging power for the target energy storage module can be determined, and the power generation module can be controlled to charge the target energy storage module according to the target charging power. The aforementioned capacity ratio refers to the proportion of the capacity stored in the target energy storage module, such as 30% of the capacity stored in the energy storage module.

[0251] As another exemplary implementation, after determining one or more target energy storage modules to be charged, the proportion of the current stored power of each target energy storage module can be determined, and the proportion of the power can be used to characterize the current power of the target energy storage module.

[0252] Based on this, the target charging power for the target energy storage module can be determined according to the power ratio of each target energy storage module, and the power generation module can be controlled to charge the target energy storage module according to the target charging power.

[0253] Furthermore, during the charging process of the target energy storage module according to the aforementioned target charging power, if the current power ratio of the target energy storage module is greater than a preset power ratio threshold, the technician can charge the target energy storage module whose power ratio exceeds the power ratio threshold separately according to the set charging power. Therefore, after detecting the target operation on the target energy storage module, the executing entity of this application embodiment can determine the new target charging power of the target energy storage module based on the aforementioned target operation. The aforementioned target operation can be used to characterize charging the target energy storage module separately according to the new target charging power.

[0254] Afterwards, the target energy storage module can be charged individually according to the new target charging power.

[0255] For example, the charging and discharging logic of grid-connected energy storage modules can be divided into two types: "power single control" and "power total control".

[0256] Among them, power single control: the energy storage module can charge independently according to its own manually set charging power value; each PCS adjusts the charging power in real time according to the actual SOC (System on Chip) ratio, and after any PCS reaches the SOC upper limit protection value b, the remaining charging power is automatically distributed to the other PCS according to the actual SOC ratio.

[0257] Total power control: can read the number of energy storage modules in "online, grid-connected, and total control".

[0258] Based on this, the total charging power is evenly distributed according to the manually set total charging power value. If one of the functional modules exits the "total power control" mode, the set charging power value will be evenly distributed to the remaining energy storage modules participating in the total power control. The exited energy storage modules can charge independently according to their current charging power settings. Each PCS adjusts its charging power in real time according to the actual SOC ratio. After any PCS reaches the SOC upper limit protection value b, the remaining charging power is automatically distributed to the remaining PCS according to the actual SOC ratio.

[0259] The technical solution provided in this application dynamically adjusts the power supply of each currently operating power generation module and energy storage module according to their operating modes. Specifically, the power supply of grid-connected modules is preferentially determined to be the rated power corresponding to the power command. Then, for off-grid modules, the power supply of each off-grid module is determined through average or proportional allocation. This achieves the goal of determining the power supply of each module based on its operating mode, thereby saving energy while improving the power supply efficiency of the power supply modules. This results in more efficient power supply to the load modules and improved energy utilization.

[0260] Referring to Figure 7, a flowchart of another embodiment of the control method for a power supply system provided in this application is shown. Based on the flowchart shown in Figure 6, Figure 7 describes how, in a scenario where the currently operating module includes multiple power generation modules and multiple energy storage modules, and the power generation modules are gas turbine generator sets, the energy storage module specifically improves the stability of the power generation modules. As shown in Figure 7, this process may include the following steps:

[0261] Step 701: Determine the combustion temperature of each gas turbine generator set.

[0262] Step 702: For each gas turbine generator set, if the corresponding combustion temperature is determined to be greater than the preset first temperature threshold, the first target regulating power corresponding to the combustion temperature is determined from the preset first correspondence between the temperature range and the regulating power, based on the combustion temperature.

[0263] The following provides a unified explanation of steps 701 and 702:

[0264] The aforementioned gas turbine generator set refers to a unit that generates electricity by burning gas to drive a generator.

[0265] The combustion temperature mentioned above refers to the temperature value corresponding to the combustion of gas during the power generation of the gas turbine generator set. The higher the temperature value, the higher the power generation capacity of the gas turbine generator set.

[0266] The aforementioned temperature range refers to a pre-set temperature range that is higher than a preset first temperature threshold. When the combustion temperature of the gas turbine generator set is within this temperature range, it indicates a sudden increase in the power generation of the gas turbine generator set.

[0267] The aforementioned first correspondence refers to the pre-set correspondence between different temperature ranges and their corresponding adjustment powers.

[0268] The aforementioned first temperature threshold is a pre-set temperature threshold that may cause damage to the gas turbine generator set. It can be the upper limit for shutting down the gas turbine generator set, or other set values, such as 930℃, 925℃, or 935℃, etc. This application embodiment does not limit this.

[0269] In this embodiment, when the total load power of the load module suddenly increases or decreases, the power supply of the gas turbine generator set may increase or decrease accordingly, leading to instability of the power generation module. Therefore, to prevent instability caused by sudden increases or decreases in total load power, when the power generation module is a gas turbine generator set, the control module can detect the combustion temperature of the gas turbine generator set in real time, and this combustion temperature can characterize the stability of the gas turbine generator set.

[0270] The power output of a gas turbine generator set can be positively correlated with its combustion temperature; that is, the higher the power output of the gas turbine generator set, the higher the combustion temperature of its fuel. For example, the actual correspondence between the power output and combustion temperature is shown in Table 1 below:

[0271] Table 1

[0272] To this end, the combustion temperature of each gas turbine generator set can be determined. If the combustion temperature is greater than a preset first temperature threshold, a first target regulating power corresponding to that combustion temperature can be determined from a preset temperature range and regulating power correspondence. This first target regulating power characterizes the regulating power provided by the energy storage module required to improve the stability of the gas turbine generator set.

[0273] Step 703: When the currently operating energy storage module is charging, adjust the power according to the first target and reduce the charging power of the energy storage module whose operating mode is off-grid.

[0274] Step 704: When the currently operating energy storage module is powered, adjust the power according to the first target and increase the power supply of the energy storage module in the off-grid operation mode.

[0275] The following provides a unified explanation of steps 703 and 704:

[0276] In this embodiment of the application, in order to play a "peak shaving" role for the power generation module, the control module can adjust the power supply of the currently off-grid energy storage module according to the determined first target adjustment power.

[0277] As an optional implementation, when the currently operating energy storage module is charging, the power can be adjusted according to the first target to reduce the charging power of the energy storage module operating in off-grid mode, thereby reducing the power supply power of the power generation module.

[0278] As an exemplary implementation, different temperature ranges can correspond to different peak-shaving commands, and each peak-shaving command can correspond to a charging power reduction value. Based on this, a target peak-shaving command corresponding to the first target adjustment power can be determined, and the target peak-shaving command can be sent to the corresponding off-grid energy storage module, so that the energy storage module reduces its own charging power according to the charging power reduction value corresponding to the target peak-shaving command.

[0279] As another alternative implementation, when the currently operating energy storage module is supplying power, the power can be adjusted according to the first objective, increasing the power supply of the energy storage module operating in off-grid mode, thereby reducing the power supply of the power generation module.

[0280] As an exemplary implementation, different temperature ranges can correspond to different peak-shaving commands, and each peak-shaving command can correspond to a power supply increase value. Based on this, a target peak-shaving command corresponding to the first target adjustment power can be determined, and the target peak-shaving command can be sent to the corresponding off-grid energy storage module, so that the energy storage module can increase its own power supply according to the power supply increase value corresponding to the target peak-shaving command.

[0281] In addition, the power generation of the power generation module can be detected in real time, and it can be determined whether the power generation exceeds a preset power threshold. When it exceeds the power threshold, the power range to which the power generation belongs can be determined. The power range can be a preset range that exceeds the power threshold. When the power generation exceeds the power threshold, it indicates that the power generation of the power generation module has suddenly increased.

[0282] Furthermore, each power range can correspond to a peak shaving command, which is used to instruct the off-grid energy storage module to operate at a preset target power.

[0283] The technical solution provided in this application determines the combustion temperature of each gas turbine generator set. For each gas turbine generator set, when the corresponding combustion temperature is greater than a preset first temperature threshold, a first target adjustment power corresponding to the combustion temperature is determined from a first correspondence between a preset temperature range and power supply. When the currently operating energy storage module is charging, the charging power of the energy storage module operating in off-grid mode is reduced according to the first target adjustment power. When the currently operating energy storage module is supplying power, the power supply power of the energy storage module operating in off-grid mode is increased according to the first target adjustment power. This technical solution, by adjusting the charging power of the off-grid energy storage module or the power supply module when the power supply power of the gas turbine generator set increases based on the combustion temperature, reduces the power supply power of the gas turbine generator set. This achieves peak shaving for the power generation module when its power supply suddenly increases, thereby improving the safety of the power generation module.

[0284] Referring to Figure 8, a flowchart of an embodiment of a power supply system control method provided in this application is shown. Based on the flowchart shown in Figure 6, Figure 8 describes how, in the case where the currently operating module includes at least two power generation modules and at least two energy storage modules, and the power generation modules are gas turbine generator sets, the energy storage modules specifically improve the stability of the power generation modules. As shown in Figure 8, this process may include the following steps:

[0285] Step 801: Determine the combustion temperature of each gas turbine power generation module.

[0286] Step 802: For each gas turbine power generation module, if the corresponding combustion temperature is determined to be less than the preset second temperature threshold, the second target regulating power corresponding to the combustion temperature is determined from the preset second correspondence between the temperature range and the regulating power, based on the combustion temperature, wherein the second temperature threshold is less than the first temperature threshold.

[0287] The following provides a unified explanation of steps 801 and 802:

[0288] The aforementioned gas turbine generator set refers to a unit that generates electricity by burning gas to drive a generator.

[0289] The combustion temperature mentioned above refers to the temperature value corresponding to the combustion of gas during the power generation of the gas turbine generator set. The higher the temperature value, the higher the power generation capacity of the gas turbine generator set.

[0290] The aforementioned temperature range refers to the temperature range that is lower than the preset second temperature threshold. When the combustion temperature of the gas turbine generator set is within this temperature range, it indicates that the power generation of the gas turbine generator set suddenly decreases.

[0291] The second correspondence mentioned above refers to the correspondence between different preset temperature ranges and their corresponding adjustment powers.

[0292] The aforementioned second temperature threshold is a pre-set temperature threshold that may cause instability in the gas turbine generator set. It can be a preset ratio of the upper limit of the shutdown of the gas turbine generator set, or other set values, such as 860°C, 870°C, or 890°C, etc. This application embodiment does not limit this.

[0293] In this embodiment, when the total load power of the load module suddenly increases or decreases, the power supply of the gas turbine generator set may increase or decrease accordingly, leading to instability of the power generation module. Therefore, to prevent instability caused by sudden increases or decreases in total load power, when the power generation module is a gas turbine generator set, the control module can detect the combustion temperature of the gas turbine generator set in real time, and this combustion temperature can characterize the stability of the gas turbine generator set.

[0294] In this embodiment, when the total load power of the load module suddenly decreases, the power supply of the generator module may also decrease, leading to instability in the generator module. Therefore, to prevent instability in the gas turbine generator set caused by a sudden decrease in total load power, the control module can monitor the combustion temperature of each gas turbine generator set in real time.

[0295] Therefore, when the combustion temperature of any gas turbine generator set is detected to be lower than a preset second temperature threshold, a second target regulating power corresponding to that combustion temperature can be determined from a preset second correspondence between temperature ranges and regulating power. This second target regulating power characterizes the power supply provided by the energy storage module required to improve the stability of the power generation module.

[0296] Step 803: When the currently operating energy storage module is charging, adjust the power according to the second target and increase the charging power of the energy storage module whose operating mode is off-grid.

[0297] Step 804: When the currently operating energy storage module is powered, adjust the power according to the second objective and reduce the power supply of the energy storage module in the off-grid operation mode.

[0298] The following provides a unified explanation of steps 803 and 804:

[0299] In this embodiment of the application, in order to play the role of "valley filling" for the power generation module, the control module can adjust the power supply or charging power of the currently off-grid energy storage module according to the determined second target adjustment power.

[0300] As an optional implementation, while the currently operating energy storage module is charging, the power can be adjusted according to the second objective to increase the charging power of the energy storage module operating in off-grid mode, thereby increasing the power supply power of the power generation module.

[0301] As an exemplary implementation, different power supplies can correspond to different valley-filling commands, and each valley-filling command can correspond to a charging power increase value. Based on this, a target valley-filling command corresponding to the second target adjustment power can be determined, and the target valley-filling command can be sent to the corresponding off-grid energy storage module, so that the energy storage module can increase its own charging power according to the charging power increase value corresponding to the target valley-filling command.

[0302] As another optional implementation, when the currently operating energy storage module is supplying power, the power can be adjusted according to the second objective to reduce the power supply of the energy storage module operating in off-grid mode, thereby increasing the power supply of the power generation module.

[0303] As an exemplary implementation, different power supplies can correspond to different valley-filling commands, and each valley-filling command can correspond to a power supply reduction value. Based on this, a target valley-filling command corresponding to the second target adjustment power can be determined, and the target valley-filling command can be sent to the corresponding off-grid energy storage module, so that the energy storage module reduces its own power supply according to the power supply reduction value corresponding to the target valley-filling command.

[0304] In addition, the power output of the power generation module can be detected in real time, and it can be determined whether the power output is less than a preset minimum power threshold. When it is less than the minimum power threshold, the target power range to which the power output belongs can be determined. The target power range can be a preset range of power outputs less than the power threshold. When the power output is less than the minimum power threshold, it indicates that the power output of the power generation module has suddenly decreased.

[0305] Furthermore, each power range can correspond to a first valley filling command, which can be used to instruct the off-grid energy storage module to operate at a preset target power.

[0306] The technical solution provided in this application determines the combustion temperature of each gas turbine generator module. For each gas turbine generator module, when the corresponding combustion temperature is determined to be lower than a preset second temperature threshold, a second target adjustment power corresponding to the combustion temperature is determined from a preset second correspondence between temperature range and adjustment power. Where the second temperature threshold is lower than the first temperature threshold, and the currently operating energy storage module is charging, the charging power of the energy storage module operating in off-grid mode is increased according to the second target adjustment power. Where the currently operating energy storage module is supplying power, the supply power of the energy storage module operating in off-grid mode is decreased according to the second target adjustment power. This technical solution, by adjusting the charging power of the off-grid energy storage module or the supply module when the gas turbine generator module's supply power decreases based on its combustion temperature, increases the gas turbine generator module's supply power. This achieves a "valley filling" effect when the power supply power of the generator module suddenly drops, thereby improving the stability of the generator module.

[0307] Referring to Figure 9, this is a block diagram of an embodiment of a control device for a power supply system provided in this application. As one embodiment, this device can be applied to a control module in a power supply system. The power supply system may include a control module, a parallel module, at least one generator module, at least one energy storage module, and a load module. The parallel module is used to supply power to the load module. This power supply system may be the power supply system shown in Figure 1. As shown in Figure 9, the device may include:

[0308] The first acquisition module 91 is used to acquire the current total load power of the load module during the process of the parallel module supplying power to the load module;

[0309] The second acquisition module 92 is used to acquire the operating mode of each of the power generation modules and / or energy storage modules that are currently in operation;

[0310] The determination module 93 is used to determine the power supply of each of the currently operating power generation modules and / or energy storage modules based on the total load power and the operating mode.

[0311] The control module 94 is used to control the power generation module and / or the energy storage module to supply power to the parallel module according to the corresponding power supply power.

[0312] Figure 10 shows a schematic diagram of an electronic device according to an embodiment of this application, including a processor 1001, a communication interface 1002, a memory 1003, and a communication bus 1004. The processor 1001, communication interface 1002, and memory 1003 communicate with each other via the communication bus 1004.

[0313] Memory 1003 is used to store computer programs;

[0314] In one embodiment of this application, the processor 1001, when executing a program stored in the memory 1003, implements a control method for a power supply system provided in any of the foregoing method embodiments. The power supply system includes the control module, a parallel module, at least one power generation module, at least one energy storage module, and a load module. The parallel module is used to supply power to the load module. The method includes:

[0315] During the process of the parallel module supplying power to the load module, the current total load power of the load module is obtained;

[0316] Obtain the operating mode of each of the aforementioned power generation modules and / or energy storage modules that are currently in operation;

[0317] Based on the total load power and the operating mode, determine the power supply power of each of the currently operating power generation modules and / or energy storage modules, and control the power generation modules and / or energy storage modules to supply power to the parallel modules according to the corresponding power supply power.

[0318] This application also provides a storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the power supply system control method provided in any of the foregoing method embodiments.

[0319] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0320] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software and a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0321] It should be understood that the terminology used herein is for the purpose of illustrating specific embodiments of the text only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in the specific order described or illustrated unless the order is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0322] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A control method for a power supply system, applied to a control module in the power supply system, the power supply system including the control module, a parallel module, at least one generator module, at least one energy storage module, and a load module, wherein the parallel module is used to supply power to the load module, the method comprising: During the process of the parallel module supplying power to the load module, the current total load power of the load module is obtained; Obtain the operating mode of each of the aforementioned power generation modules and / or energy storage modules that are currently in operation; Based on the total load power and the operating mode, determine the power supply power of each of the currently operating power generation modules and / or energy storage modules, and control the power generation modules and / or energy storage modules to supply power to the parallel modules according to the corresponding power supply power.

2. The method according to claim 1, wherein, When at least two energy storage modules are currently in operation, determining the power supply of each currently operating power generation module and / or energy storage module based on the total load power and the operating mode includes: If it is determined that at least two of the energy storage modules currently in operation are in off-grid operation mode, a first number of the energy storage modules currently in operation is determined. Divide the total load power by the first quantity to obtain the average load power; The average load power is determined as the power supply power corresponding to each of the energy storage modules currently in operation.

3. The method according to claim 1, wherein, When at least two energy storage modules are currently in operation, determining the power supply of each currently operating power generation module and / or energy storage module based on the total load power and the operating mode includes: If it is determined that at least two of the energy storage modules currently in operation are in off-grid operation mode, determine the first remaining power of each of the energy storage modules currently in operation; Based on the first remaining power of each of the energy storage modules, determine the first power generation ratio of all the energy storage modules currently in operation; The power supply of each of the energy storage modules currently in operation is determined based on the total load power and the first power generation ratio.

4. The method according to claim 2 or 3, wherein, Determining the power supply of each currently operating power generation module and / or energy storage module based on the total load power and the operating mode includes: If it is determined that at least two of the energy storage modules currently in operation include a first grid-connected energy storage module operating in grid-connected mode and a first off-grid energy storage module operating in off-grid mode, the first power supply power of each of the first grid-connected energy storage modules is obtained, wherein the first grid-connected energy storage module determines the first power supply power according to the received power command and operates according to the first power supply power. Based on the total load power and the first power supply power of each of the first grid-connected energy storage modules, determine the first remaining load power corresponding to all the first off-grid energy storage modules. The power supply power of each of the first off-grid energy storage modules is determined based on the first remaining load power.

5. The method according to claim 4, wherein, The step of determining the power supply of each of the first off-grid energy storage modules based on the first remaining load power includes: Determine the second number of the first off-grid energy storage modules; divide the first remaining load power by the second number to obtain the power supply power of each of the first off-grid energy storage modules; or, Determine the second remaining power of each of the first off-grid energy storage modules; based on the second remaining power of each of the first off-grid energy storage modules, determine the second power generation ratio of all currently operating first off-grid energy storage modules; and based on the first remaining load power and the second power generation ratio, determine the power supply of each of the first off-grid energy storage modules.

6. The method according to claim 1, wherein, When the currently operating modules include at least one power generation module and at least one energy storage module, determining the power supply of each currently operating power generation module and / or energy storage module based on the total load power and the operating mode includes: If it is determined that the operating mode of the currently operating power generation module is grid-connected and the operating mode of the currently operating energy storage module is off-grid, the second power supply power of each of the currently operating power generation modules is obtained, wherein the power generation module determines the second power supply power according to the received power command and operates according to the second power supply power; Based on the total load power and the second power supply power of each of the power generation modules, determine the second remaining load power corresponding to all the currently operating energy storage modules; The power supply of each of the energy storage modules currently in operation is determined based on the second remaining load power.

7. The method according to claim 6, wherein, Based on the total load power and the operating mode, determine the power supply of each of the currently operating power generation modules and / or energy storage modules, including: If it is determined that the operating mode of the currently operating power generation modules is grid-connected, and it is determined that the multiple currently operating energy storage modules include a second grid-connected energy storage module operating in grid-connected mode and a second off-grid energy storage module operating in off-grid mode, the third power supply power of each currently operating power generation module is obtained, wherein the power generation module determines the third power supply power according to the received power command and operates according to the third power supply power; Obtain the fourth power supply of each of the second grid-connected energy storage modules, wherein each of the second grid-connected energy storage modules determines the fourth power supply according to the received power command and operates according to the fourth power supply; Based on the total load power, the third power supply power corresponding to each of the power generation modules, and the fourth power supply power corresponding to each of the second grid-connected energy storage modules, the third remaining load power corresponding to all the second off-grid energy storage modules is determined. The power supply of each of the second off-grid energy storage modules is determined based on the third remaining load power.

8. The method according to claim 6, wherein, Based on the total load power and the operating mode, determine the power supply of each of the currently operating power generation modules and / or energy storage modules, including: Given that the operating modes of the currently operating power generation modules are all off-grid operation and the operating modes of the currently operating energy storage modules are all grid-connected operation, the fifth power supply power of each of the currently operating energy storage modules is obtained, wherein the energy storage module determines the fifth power supply power according to the received power command and operates according to the fifth power supply power; Based on the total load power and the fifth power supply power of each energy storage module, determine the fourth remaining load power corresponding to all currently operating power generation modules; Determine the amount of electricity generated by the currently operating power generation module; Divide the fourth remaining load power by the number of generators to obtain the power supply power of each generator module.

9. The method according to claim 4, wherein, The method further includes: If it is determined that there is a target first grid-connected energy storage module to be charged, the charging power of the target first grid-connected energy storage module is determined. Based on the power to be charged, determine a charging command to characterize the power supplied by the power to be charged; From the first off-grid energy storage modules, determine the target first off-grid energy storage module for charging; The charging command is sent to the target first off-grid energy storage module so that the target first off-grid energy storage module charges the target first grid-connected energy storage module according to the charging power.

10. The method according to any one of claims 6 to 8, wherein, The method further includes: In the energy storage modules operating in grid-connected mode, identify one or more target energy storage modules to be charged; Determine the current energy storage ratio of each target energy storage module; based on the energy storage ratio of each target energy storage module, determine the target charging power for the target energy storage module, and control the power generation module to charge the target energy storage module according to the target charging power; During the process of charging the target energy storage module according to the target charging power, if a target operation is detected for the target energy storage module, a new target charging power for the target energy storage module is determined according to the target operation, and the target energy storage module is charged separately according to the new target charging power; the target operation is used to characterize charging the target energy storage module separately according to the new target charging power.

11. The method according to claim 10, wherein, The power generation module is a gas turbine generator set, and the method further includes: Determine the combustion temperature for each of the aforementioned gas turbine generator sets; For each gas turbine generator set, if it is determined that the corresponding combustion temperature is greater than a preset first temperature threshold, the first target regulating power corresponding to the combustion temperature is determined from the first correspondence between the preset temperature range and the regulating power, based on the combustion temperature. When the currently operating energy storage module is charging, adjust the power according to the first target and reduce the charging power of the energy storage module whose operating mode is off-grid operation; When the currently operating energy storage module is powered, adjust the power according to the first target and increase the power supply of the energy storage module in the off-grid operation mode.

12. The method according to claim 11, wherein, The method further includes: If the combustion temperature is determined to be less than a preset second temperature threshold, a second target adjustment power corresponding to the combustion temperature is determined from a preset second correspondence between temperature range and adjustment power, based on the combustion temperature; wherein the second temperature threshold is less than the first temperature threshold. While the currently operating energy storage module is charging, the power is adjusted according to the second target to increase the charging power of the energy storage module whose operating mode is off-grid; When the currently operating energy storage module is powered, adjust the power according to the second objective to reduce the power supply of the energy storage module in the off-grid operation mode.

13. A power supply system, comprising: The system includes a control module, a set of power generation modules, a set of energy storage modules, a parallel operation module, and a load module. The set of power generation modules includes at least one power generation module, and the set of energy storage modules includes at least one energy storage module. The control terminal of the control module is connected to the first terminal of at least one of the power generation modules in the power generation module set and the first terminal of at least one of the energy storage modules in the energy storage module set, respectively. The second end of each power generation module in the power generation module set and the second end of each energy storage module in the energy storage module set are both used to connect to the first end of the parallel operation module; wherein, the parallel operation module is powered by at least two target modules in the power generation module set and the energy storage module set, and the target modules are the power generation module and / or the energy storage module; The second end of the parallel module is connected to the input end of the load module, and the parallel module is used to supply power to the load module and / or the energy storage module.

14. The power supply system according to claim 13, wherein, The parallel module includes a parallel cabinet and a power distribution skid; The second end of the power generation module and the second end of the energy storage module are both connected to the input end of the parallel cabinet through the first transmission line, and the first voltage output by the first transmission line is greater than the preset first voltage threshold. The third end of the power generation module and the third end of the energy storage module are both connected to the input end of the busbar. The output end of the busbar is connected to the input end of the distribution skid and the input end of the parallel cabinet, respectively. The busbar is used to provide a second voltage to the distribution skid and the parallel cabinet. The second voltage is less than a preset second voltage threshold. The output terminal of the parallel cabinet is connected to the input terminal of the power distribution skid via the first power transmission line and the second power transmission line; the third voltage output by the second power transmission line is less than the second voltage threshold. The output end of the power distribution skid is connected to the input end of the load module.

15. The power supply system according to claim 14, wherein, The load module includes a low-voltage load sub-module and a medium-voltage load sub-module; The output end of the power distribution skid is connected to the input end of the medium-voltage load sub-module via the first power transmission line; The output end of the power distribution skid is connected to the input end of the low-voltage load sub-module via the second power transmission line.

16. A control device for a power supply system, applied to a control module in the power supply system, the power supply system including the control module, a parallel module, at least one generator module, at least one energy storage module, and a load module, the parallel module being used to supply power to the load module, the device comprising: The first acquisition module is used to acquire the current total load power of the load module during the process of the parallel module supplying power to the load module; The second acquisition module is used to acquire the operating mode of each of the power generation modules and / or energy storage modules that are currently in operation; The determination module is used to determine the power supply of each of the currently operating power generation modules and / or energy storage modules based on the total load power and the operating mode. A control module is used to control the power generation module and / or the energy storage module to supply power to the parallel module according to the corresponding power supply power.

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