Control method of power supply system, power supply system and device

Abstract

The invention relates to a control method of a power supply system, the power supply system and a device, the method is applied to a control module in the power supply system, 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, the parallel operation module is used for supplying power to the load module, the method comprises the steps that in the process that the parallel operation module supplies power to the load module, the current total load power of the load module is acquired; obtaining an operation mode of each power generation module and / or each energy storage module which is currently operated; and according to the total load power and the operation mode, determining the power supply power of each power generation module and / or energy storage module which is operating at present, and controlling the power generation module and / or the energy storage module to supply power to the parallel operation module according to the corresponding power supply power. Therefore, the power supply efficiency of the power supply module can be improved while the electric energy is saved, so that the electric energy is more efficiently provided for the load module, and the utilization rate of the electric energy is improved.

Description

Technical Field

[0001] The present 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 Art

[0002] At present, the oil and gas industry generally adopts hydraulic fracturing to extract oil. As oil and gas extraction work develops towards cleanliness and efficiency, the driving mode of fracturing operations mostly adopts electric drive mode. In the electric drive mode, gas turbine generator sets are widely used to power well site fracturing operations due to their advantages such as high output power and high energy density.

[0003] However, in the process of powering the power through a single gas turbine generator set, due to the long idle time and low-load operation time when the single engine is powering the power, the surplus electricity cannot be released, resulting in relatively low gas-to-electricity. Summary of the invention

[0004] The present application provides a control method, a power supply system and a device for a power supply system to solve the technical problem in the prior art that, in the process of power supply through a single gas turbine generator set, the idle time is long, the low-load operation time is long, and the surplus electricity cannot be released, resulting in a relatively low gas-to-electricity ratio.

[0005] In a first aspect, the present application provides a control method for a power supply system, which is applied to a control module in the power supply system, wherein 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, wherein the parallel module is used to supply power to the load module, and the method includes:

[0006] In the process of the parallel module supplying power to the load module, obtaining the current total load power of the load module;

[0007] Obtaining an operating mode of each of the power generation modules and / or the energy storage modules currently in operation;

[0008] According to the total load power and the operating mode, the power supply power of each power generation module and / or the energy storage module currently in operation is determined, and the power generation module and / or the energy storage module is controlled to supply power to the parallel module according to the corresponding power supply power.

[0009] As an optional implementation, when the currently running modules are at least two energy storage modules, determining the power supply power of each of the power generation modules and / or the energy storage modules currently running according to the total load power and the operating mode includes:

[0010] When it is determined that the operation modes of at least two of the energy storage modules currently in operation are both off-grid operation, determining a first number of the energy storage modules currently in operation;

[0011] Dividing the total load power by the first number to obtain an average load power;

[0012] The average load power is determined as the power supply power corresponding to each of the energy storage modules currently in operation.

[0013] As an optional implementation, when the currently running modules are at least two energy storage modules, determining the power supply power of each of the power generation modules and / or the energy storage modules currently running according to the total load power and the operating mode includes:

[0014] When it is determined that the operation modes of at least two of the energy storage modules currently in operation are both off-grid operation, determining a first remaining power of each of the energy storage modules currently in operation;

[0015] Determining a first power generation ratio of all the energy storage modules currently in operation according to the first remaining power of each of the energy storage modules;

[0016] The power supply power of each of the energy storage modules currently in operation is determined according to the total load power and the first power generation ratio.

[0017] As an optional implementation, determining the power supply power of each of the power generation modules and / or the energy storage modules currently in operation according to the total load power and the operation mode includes:

[0018] In the case where it is determined that at least two of the currently operating energy storage modules include a first grid-connected energy storage module whose operation mode is grid-connected operation and a first off-grid energy storage module whose operation mode is off-grid operation, obtaining a first power supply power of each of the first grid-connected energy storage modules, wherein the first grid-connected energy storage module determines the first power supply power according to the received power instruction and operates according to the first power supply power;

[0019] Determine a first residual load power corresponding to all of the first off-grid energy storage modules according to the total load power and the first power supply power of each of the first grid-connected energy storage modules;

[0020] The power supply power of each of the first off-grid energy storage modules is determined according to the first residual load power.

[0021] As an optional implementation, determining the power supply power of each of the first off-grid energy storage modules according to the first residual load power includes:

[0022] Determine a second number of the first off-grid energy storage modules; divide the first residual load power by the second number to obtain a power supply power of each of the first off-grid energy storage modules;

[0023] or,

[0024] Determine the second remaining power of each of the first off-grid energy storage modules; determine the second power generation ratio of all the first off-grid energy storage modules currently in operation based on the second remaining power of each of the first off-grid energy storage modules; determine the power supply power of each of the first off-grid energy storage modules based on the first remaining load power and the second power generation ratio.

[0025] As an optional implementation, when the currently running modules include at least one power generation module and at least one energy storage module, determining the power supply power of each of the power generation modules and / or the energy storage modules currently running according to the total load power and the operating mode includes:

[0026] When it is determined that the operation modes of the currently operating power generation modules are all grid-connected operation, and the operation modes of the currently operating energy storage modules are all off-grid operation, the second power supply power of each of the currently operating power generation modules is obtained, wherein the power generation modules determine the second power supply power according to the received power instruction, and operate according to the second power supply power;

[0027] Determine the second remaining load power corresponding to all the energy storage modules currently in operation according to the total load power and the second power supply power of each of the power generation modules;

[0028] The power supply power of each of the energy storage modules currently in operation is determined according to the second residual load power.

[0029] As an optional implementation, determining the power supply power of each of the power generation modules and / or the energy storage modules currently in operation according to the total load power and the operation mode includes:

[0030] When it is determined that the operation modes of the currently operating power generation modules are all grid-connected operation, and it is determined that the currently operating multiple energy storage modules include a second grid-connected energy storage module whose operation mode is grid-connected operation and a second off-grid energy storage module whose operation mode is off-grid operation, a third power supply power of each of the currently operating power generation modules is obtained, wherein the power generation module determines the third power supply power according to the received power instruction, and operates according to the third power supply power;

[0031] Obtaining a fourth power supply power of each of the second grid-connected energy storage modules, wherein each of the second grid-connected energy storage modules determines a fourth power supply power according to the received power instruction and operates according to the fourth power supply power;

[0032] Determine the third remaining load power corresponding to all the second off-grid energy storage modules according to 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;

[0033] The power supply power of each of the second off-grid energy storage modules is determined according to the third residual load power.

[0034] As an optional implementation, determining the power supply power of each of the power generation modules and / or the energy storage modules currently in operation according to the total load power and the operation mode includes:

[0035] When it is determined that the operation modes of the currently operating power generation modules are all off-grid operation, and the operation modes of the currently operating energy storage modules are all grid-connected operation, obtaining the fifth power supply power of each of the currently operating energy storage modules, wherein the energy storage modules determine the fifth power supply power according to the received power instruction, and operate according to the fifth power supply power;

[0036] Determine, according to the total load power and the fifth power supply power of each of the energy storage modules, the fourth residual load power corresponding to all the power generation modules currently in operation;

[0037] Determine the power generation quantity of the power generation module currently in operation;

[0038] The fourth residual load power is divided by the power generation quantity to obtain the power supply power of each power generation module.

[0039] As an optional implementation, the method further includes:

[0040] In the case where it is determined that there is a target first grid-connected energy storage module to be charged, determining the power to be charged of the target first grid-connected energy storage module;

[0041] Determining, according to the power to be charged, a charging instruction for indicating power supply with the power to be charged;

[0042] Determining a target first off-grid energy storage module for charging from the first off-grid energy storage modules;

[0043] The charging instruction 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 power to be charged.

[0044] As an optional implementation, the method further includes:

[0045] In an energy storage module whose operation mode is grid-connected operation, determining one or more target energy storage modules to be charged;

[0046] Determine the proportion of electricity currently stored in each of the target energy storage modules; determine the target charging power for the target energy storage module according to the proportion of electricity of each of the target energy storage modules, and control the power generation module to charge the target energy storage module according to the target charging power;

[0047] In the process of charging the target energy storage module according to the target charging power, if a target operation for the target energy storage module is detected, 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 represent that the target energy storage module is charged separately according to the new target charging power.

[0048] As an optional implementation, the power generation module is a gas turbine generator set, and the method further includes:

[0049] determining a combustion temperature of each of said gas turbine generator sets;

[0050] For each of the gas turbine generator sets, when it is determined that the corresponding combustion temperature is greater than a preset first temperature threshold, determining a first target regulating power corresponding to the combustion temperature from a first corresponding relationship between a preset temperature range and the regulating power according to the combustion temperature;

[0051] When the currently operating energy storage module is in charging, adjusting the power according to the first target to reduce the charging power of the energy storage module in off-grid operation mode;

[0052] When the currently operating energy storage module is in power supply, the power is adjusted according to the first target to increase the power supply of the energy storage module whose operating mode is off-grid operation.

[0053] As an optional implementation, the method further includes:

[0054] When it is determined that the combustion temperature is less than a preset second temperature threshold, determining a second target adjustment power corresponding to the combustion temperature from a second corresponding relationship between a preset temperature range and an adjustment power according to the combustion temperature; wherein the second temperature threshold is less than the first temperature threshold;

[0055] When the currently operating energy storage module is in charging, adjusting the power according to the second target, and increasing the charging power of the energy storage module whose operating mode is off-grid operation;

[0056] When the currently operating energy storage module is in power supply, the power is adjusted according to the second target to reduce the power supply power of the energy storage module whose operating mode is off-grid operation.

[0057] In a second aspect, the present application provides a power supply system, including: a control module, a power generation module set, an energy storage module set, a parallel module, and a load module, wherein the power generation module set includes at least one power generation module, and the energy storage module set includes at least one energy storage module;

[0058] The control end of the control module is respectively connected to the first end of at least one power generation module in the power generation module set and the first end of at least one energy storage module in the energy storage module set;

[0059] 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 used to connect to the first end of the parallel module; wherein the parallel 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;

[0060] 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.

[0061] As an optional implementation, the parallel module includes a parallel cabinet and a power distribution skid;

[0062] 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 a first transmission line, and a first voltage output by the first transmission line is greater than a preset first voltage threshold;

[0063] 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 respectively connected to the input end of the distribution skid and the input end of the parallel cabinet, and the busbar is used to provide a second voltage for the distribution skid and the parallel cabinet; the second voltage is less than a preset second voltage threshold;

[0064] The output end of the parallel cabinet is connected to the input end of the distribution skid through the first transmission line and the second transmission line; the third voltage output by the second transmission line is less than the second voltage threshold;

[0065] The output end of the power distribution skid is connected to the input end of the load module.

[0066] As an optional implementation, the load module includes a low-voltage load sub-module and a medium-voltage load sub-module;

[0067] The output end of the power distribution skid is connected to the input end of the medium voltage load submodule through the first transmission line;

[0068] The output end of the power distribution skid is connected to the input end of the low-voltage load sub-module through the second transmission line.

[0069] In a third aspect, the present application provides a control device for a power supply system, which is applied to a control module in the power supply system, wherein 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, wherein the parallel module is used to supply power to the load module, and the device includes:

[0070] A first acquisition module, used for acquiring the current total load power of the load module during the process of the parallel module supplying power to the load module;

[0071] A second acquisition module is used to acquire the operation mode of each of the power generation modules and / or the energy storage modules currently in operation;

[0072] A determination module, used to determine the power supply power of each of the power generation modules and / or the energy storage modules currently in operation according to the total load power and the operation mode;

[0073] 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.

[0074] The technical solution provided in the embodiment of the present application obtains the current total load power of the load module and the operating mode of each power generation module and / or energy storage module currently running during the process of the parallel module supplying power to the load module, determines the power supply power of each power generation module and / or energy storage module currently running according to the above total load power and operating mode, and controls the above power generation module and / or energy storage module to supply power to the parallel module according to the corresponding power supply power. This technical solution provides power by setting at least one power supply module and at least one energy storage module in the power supply system. Based on this, when the power supply system supplies power to the load module, multiple power supply modules and multiple energy storage modules can be used for coordinated power supply. The power supply power can be reasonably allocated to the currently running power supply module and the energy storage module according to the total load power of the load module, so that the power supply module can operate at full load as much as possible to improve the power supply efficiency of the power supply module. In addition, due to the presence of multiple energy storage modules, the excess power generated by the power supply module can be stored in the energy storage module. Therefore, the waste of electric energy and the reduction of efficiency can be avoided, thereby achieving energy saving while improving the power supply efficiency of the power supply module, thereby more efficiently providing electric energy to the load module and improving the utilization rate of electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0076] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art texts are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0077] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0078] Figure 1 A schematic diagram of the structure of a power supply system provided in an embodiment of the present application;

[0079] Figure 2 A schematic diagram of the structure of another power supply system provided in an embodiment of the present application;

[0080] Figure 3 A flow chart of an embodiment of a control method for a power supply system provided in an embodiment of the present application;

[0081] Figure 4 A power supply schematic diagram of a power supply system provided in an embodiment of the present application;

[0082] Figure 5 A flow chart of another embodiment of a control method for a power supply system provided in an embodiment of the present application;

[0083] Figure 6 A flow chart of another embodiment of a control method for a power supply system provided in an embodiment of the present application;

[0084] Figure 7 A flow chart of an embodiment of a control method for a power supply system provided in an embodiment of the present application;

[0085] Figure 8 A flow chart of an embodiment of a control method for a power supply system provided in an embodiment of the present application;

[0086] Fig. 9 A block diagram of an embodiment of a control device for a power supply system provided in an embodiment of the present application;

[0087] Fig.10 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0088] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described in the text are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0089] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0090] In order to solve the technical problem in the prior art that in the process of power supply through a single gas turbine generator set, due to the long idle time and long low-load operation time when the single combustion engine is powered, the surplus electricity cannot be released, resulting in a relatively low gas-electricity ratio, the present application provides a control method, a power supply system and a device for a power supply system, which can be powered by arranging at least one power supply module and at least one energy storage module in the power supply system. Based on this, when the power supply system supplies power to the load module, it can be coordinated by multiple power supply modules and multiple energy storage modules. It can reasonably allocate the power supply power to the currently running power supply module and the energy storage module according to the total load power of the load module, so that the power supply module can be operated and output at full load as much as possible, thereby improving the power supply efficiency of the power supply module. In addition, due to the presence of multiple energy storage modules, the excess electricity generated by the power supply module can be stored in the energy storage module, thereby avoiding the waste of electric energy and the reduction of efficiency, thereby achieving energy saving while improving the power supply efficiency of the power supply module, thereby more efficiently providing electric energy to the load module and improving the utilization rate of electric energy.

[0091] To facilitate understanding of the control method of the power supply system provided in the present application, the power supply system involved in the method is first illustrated by way of example below:

[0092] See also Figure 1 , is a schematic diagram of the structure of a power supply system provided in an embodiment of the present application. Figure 1 As shown, 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 power generation module set 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 energy storage module set 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 at least one power generation module in the power generation module set 13 (for example, power generation module 131, power generation module 132, ..., and / or power generation module 13N, etc., Figure 1 As shown, the first end P1 of the power generation module 131, ..., the power generation module 13N is taken as an example) and the first end F1 of at least one energy storage module in the energy storage module set (for example, the energy storage module 141, the energy storage module 142, ..., the energy storage module 14N, etc.). Among them, the connection between the control module 11 and the power generation module and the energy storage module can be a communication connection. Among them, the above-mentioned first end P1 is the input end of the power generation module for receiving the control signal, and the above-mentioned first end F1 is the input end of the energy storage module for receiving the control signal.

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

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

[0098] Furthermore, the power generation module set 13 may include power generation module 131, power generation module 132, ... power generation module 13N, each of which may include a gas turbine generator set, which may include a gas turbine and a generator, which may generate electricity by burning fuel, and the embodiment of the present application does not limit the type and quantity of the power generation modules. Wherein, the above N is a positive integer greater than or equal to 2.

[0099] Furthermore, the power generation module set 13 may have a controller, which can be used to exchange data with the energy storage module set 14 and the control module 11, such as power supply efficiency, operating status, or operating mode, etc. Each power generation module 13 may also correspond to the first controller, which is not limited in the embodiment of the present application.

[0100] The energy storage module set 14 may include energy storage module 141, energy storage module 142, ... energy storage module 14N, each of which may be an energy storage system for supplying power to the outside through pre-stored electricity.

[0101] Furthermore, the above-mentioned 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 above-mentioned energy storage BMS control system can be used to control the power of the energy storage module set 14, the above-mentioned 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 above-mentioned energy storage EMS system can be used to control the operating status, operating mode, and power supply efficiency of the energy storage module according to the control instructions sent by the control module 11.

[0102] The control module 11 may be a hardware device or software that supports network connection and provides various network services. When the control module 11 is hardware, it may support various electronic devices with display screens, including but not limited to smart phones, tablet computers, laptop computers, desktop computers, etc. Figure 1 Only a desktop computer is used as an example. When the control module 11 is software, it can be installed in the electronic devices listed above. In the embodiment of the present application, the control module 11 can establish communication with the power generation module set 13 and the energy storage module set 14 by installing corresponding application programs.

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

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

[0105] The power supply system provided in the embodiment of the present application includes a control module, a power generation module set, an energy storage module set, a parallel module, and a load module, wherein the power generation module set may include at least one power generation module, and the energy storage module set may include at least one energy storage module. Furthermore, the control end of the control module can be used to control the power supply power of the power generation modules in the power generation module set and the energy storage modules in the energy storage module set. Based on this, when the power supply system supplies power to the load module, at least one power supply module and at least one energy storage module can be used to reasonably coordinate power supply, so that the power supply module can operate and output at full load as much as possible, thereby improving the power supply efficiency of the power supply module, and due to the presence of multiple energy storage modules, the excess power generated by the power supply module can be stored in the energy storage module, therefore, the waste of electric energy can be avoided, and the power saving is achieved while improving the power supply efficiency of the power supply module, thereby more efficiently providing electric energy to the load module and improving the utilization rate of electric energy.

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

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

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

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

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

[0111] Furthermore, the load module 15 may include a low voltage load submodule and a medium voltage load submodule. The low voltage load submodule is characterized by a voltage consumed being a low voltage lower than the second voltage threshold, such as electricity for daily use during well site operations, and the medium voltage load submodule is characterized by a voltage consumed being a medium voltage higher than the first voltage threshold, such as an electric drive device during well site operations.

[0112] For example, it is assumed that the voltage levels can be divided into 220V, 380V, 10kV, 24kV, 35kV, 110kV, 220kV, 500kV, 800kV, and 1000kV. Continue to assume that the low voltage range is less than 400V, the medium voltage range is 10kV to 35kV, the high voltage range is 110kV to 500kV, and the ultra-high voltage range is greater than 500kV. Based on this, the above-mentioned first voltage threshold may be 10kV, and the above-mentioned second voltage threshold may be 400V. Based on this, in addition to being greater than the first voltage threshold, the voltage consumed by the above-mentioned medium voltage load sub-module may also be less than the third voltage threshold. The third voltage threshold may be 110kV or other values, and the embodiments of the present application do not limit this.

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

[0114] In the power supply system provided in the embodiment of the present application, the parallel module may include a parallel cabinet and a distribution skid, which may 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 for the medium voltage load equipment in the load module, and provide low voltage electricity for the low voltage load equipment in the load module, thereby saving electric energy while improving the power supply efficiency of the power supply module, thereby more efficiently providing electric energy to the load module and improving the utilization rate of electric energy.

[0115] At present, the power supply system in the prior art may generally include a single generator, which supplies power to the load module through the generator. This results in a large amount of electric energy waste and low calorific value efficiency when the power required by the load module is low.

[0116] Based on this, the power supply system 10 provided in the embodiment of the present application may include a power generation module set 13 and an energy storage module set 14. In the process of supplying power to the load module, the control module 11 can control different combinations of power generation modules and energy storage modules and different operation modes to supply power to the parallel module 12, so that the parallel module 12 can efficiently supply power to the load module. Compared with the power supply system in the prior art, the power supply system 10 can save electric energy while improving the power supply efficiency of the power supply module, thereby more efficiently providing electric energy to the load module and improving the utilization rate of electric energy.

[0117] See also Figure 3 , is a flow chart of an embodiment of a control method for a power supply system provided in an embodiment of the present application. As an embodiment, Figure 3 The process shown can be applied to a control module in a power supply system, which may include a control module, a parallel module, at least one power generation module, at least one energy storage module, and a load module. The parallel module can be used to supply power to the load module. The power supply system can be, for example, Figure 1 The power supply system 10 is shown. Figure 3 As shown, the process may include the following steps:

[0118] Step 301: When the parallel module supplies power to the load module, obtain the current total load power of the load module.

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

[0120] The following is a unified description of step 301 and step 302:

[0121] The above-mentioned power supply system refers to a system for outputting electrical energy to the outside (for example Figure 1 The power supply system 10 shown in the figure may include a control module, a parallel module, at least one power generation module, at least one energy storage module, and a load module. The control module may be used to control the power supply of the power generation module and the energy storage module, for example Figure 1 The control module 11 shown; the above parallel module can be used to use the power provided by the power generation module and the energy storage module to power the load module, for example Figure 1 The parallel module 12 shown; the above-mentioned power generation module refers to a module with a power generation function, which can generate electricity by burning fuel (oil, gas, etc.), for example Figure 1 The power generation modules 131, 132, ..., 13N, etc. shown in the figure may be gas turbine power generation modules; the energy storage module refers to a module with a specific function of storing electric energy, which can be used to store electric energy and use the stored electric energy to supply power to the outside, for example Figure 1The energy storage modules 141, 142, ..., 14N, etc. are shown.

[0122] The load module refers to an electrical device, that is, a device that needs the power supply system to provide electrical energy, such as Figure 4 , is a schematic diagram of a power supply system provided in an embodiment of the present application. Figure 4 As shown, the power supply system may include multiple 1# generator sets, 2# generator sets...N# generator sets, and 1# energy storage systems, 2# energy storage systems...N# energy storage systems. The above multiple generator sets and multiple energy storage systems can supply power to fuel equipment, multiple electric drive equipment, and domestic electricity in well site operations. Therefore, the above fuel equipment, multiple electric drive equipment, and domestic electricity can all serve as load modules of the above power supply system.

[0123] Furthermore, the above-mentioned 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 above-mentioned load module through the busbars.

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

[0125] The above-mentioned operation mode refers to the operation mode 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 the embodiment of the present application, when the power supply system is supplying power to the load module, in order to more accurately supply power to the load module, the control module may first determine the current total load power of the load module.

[0127] As an optional implementation method, when there is only one load module, the load power corresponding to the 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, in the case where there are multiple load modules, the load power of each load module can be obtained, and the load power corresponding to each load module can be added to obtain the current total load power of the load modules.

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

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

[0131] As an exemplary embodiment, the control module may have a visual interface, which can display the operating status and operating mode of each power generation module and energy storage module. Based on this, the user can modify the operating status and operating mode of each power generation module and energy storage module through the visual interface. After receiving the operating status and operating mode of each power generation module and energy storage module set by the user through the visual interface, the control module can generate a corresponding control instruction for each module, and send the control instruction to the corresponding module, so that the module receiving the control instruction operates according to the operating status and operating mode corresponding to the control instruction. Among them, the above-mentioned operating status refers to the state of whether the corresponding module is running, such as running or not running.

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

[0133] As an optional implementation method, the control module may 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 (for example, the 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 (for example, the 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 power generation modules and energy storage modules that are currently running, the operation mode of each power generation module and / or energy storage module that is currently running can be obtained.

[0136] As an implementation mode, in order to save electric energy and improve the power generation efficiency of the power generation module, the modules currently in operation determined above may be multiple and include at least an energy storage module, for example, at least one power generation module and at least one energy storage module, or at least two energy storage modules, are currently in operation.

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

[0138] As an optional implementation method, the mode identifier of each power generation module and / or energy storage module currently in operation may be obtained, and the operation mode of each power generation module and / or energy storage module may be determined according to the mode identifier.

[0139] Optionally, when the mode identifier is the first identifier, it can be determined that the operation mode of the module corresponding to the mode identifier is the grid-connected operation mode. The first identifier can be a number (such as 1), a symbol, or a letter, etc., which is not limited in the embodiment of the present application.

[0140] Optionally, when the mode identifier is the second identifier, it can be determined that the operation mode of the module corresponding to the mode identifier is the off-grid operation mode. The second identifier can be a number (such as 0), a symbol, or a letter, etc., which is not limited in the embodiment of the present application.

[0141] Step 303: Determine the power supply power of each power generation module and / or energy storage module currently in operation according to the total load power and the operation mode.

[0142] Step 304: 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.

[0143] The following is a unified description of step 303 and step 304:

[0144] The above 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 modules and energy storage modules) may correspond to the same power supply power or different power supply power, and the embodiments of the present application do not limit this.

[0145] In the embodiment of the present application, after determining the total load power required by the current load module and the current operating mode of each power generation module and / or energy storage module currently in operation, the control module can determine the power supply power of each power generation module and / or energy storage module currently in operation according to 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, and the embodiment of the present application does not limit this.

[0146] As for how to determine the power supply power of each power generation module and / or energy storage module currently in operation according to the total load power and the operation mode, it can be described below. Figure 5 The process shown is explained and will not be described in detail here.

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

[0148] The technical solution provided in the embodiment of the present application obtains the current total load power of the load module and the operating mode of each power generation module and / or energy storage module currently running during the process of the parallel module supplying power to the load module, determines the power supply power of each power generation module and / or energy storage module currently running according to the above total load power and operating mode, and controls the above power generation module and / or energy storage module to supply power to the parallel module according to the corresponding power supply power. This technical solution provides power by arranging multiple power supply modules and multiple energy storage modules in the power supply system. Based on this, when the power supply system supplies power to the load module, it can be coordinated by at least one power supply module and at least one energy storage module. It can reasonably allocate the power supply power to the currently running power supply module and the energy storage module according to the total load power of the load module, so that the power supply module can operate and output at full load as much as possible, thereby improving the power supply efficiency of the power supply module. In addition, due to the existence of multiple energy storage modules, the excess power generated by the power supply module can be stored in the energy storage module. Therefore, the waste of electric energy and the reduction of efficiency can be avoided, thereby achieving energy saving while improving the power supply efficiency of the power supply module, thereby more efficiently providing electric energy to the load module and improving the utilization rate of electric energy.

[0149] See also Figure 5 , which is a flow chart of an embodiment of another power supply system control method provided in an embodiment of the present application. Figure 5 The process shown in Figure 3 Based on the process shown, it describes how to determine the power supply power of each power generation module and / or energy storage module currently in operation according to the total load power and operation mode when the currently operating modules are at least two energy storage modules. Figure 5 As shown, the process may include the following steps:

[0150] Step 501: when there are at least two energy storage modules in current operation, determine whether the operation modes of the at least two energy storage modules in current operation are both off-grid operation; if so, execute step 502; if not, execute step 503.

[0151] Step 502: Determine the power supply efficiency corresponding to each energy storage module according to the total load power.

[0152] The following is a unified description of step 501 and step 502:

[0153] The above-mentioned off-grid operation refers to the state where the energy storage module is currently not connected to the power supply system.

[0154] In the embodiment of the present application, when 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 operating off-grid.

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

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

[0157] As another optional implementation, the first remaining power of each currently running energy storage module may be determined. The first remaining power may be the current stored power proportion corresponding to the energy storage module, such as 80% of the power.

[0158] Afterwards, the first power generation ratio of all currently running energy storage modules can be determined according to the first remaining power of each energy storage module. The first power generation ratio can be obtained by comparing the first remaining power corresponding to each energy storage module. In addition, the first power generation ratio can also be pre-set according to the storage capacity of each energy storage module, which is not limited in the embodiment of the present application.

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

[0160] Optionally, when it is determined that not all currently operating energy storage modules are operating off-grid, the following step 503 may be continued.

[0161] Step 503: When it is determined that at least two currently operating energy storage modules include a first grid-connected energy storage module whose operation mode is grid-connected operation and a first off-grid energy storage module whose operation mode is off-grid operation, obtain the first power supply efficiency of each first grid-connected energy storage module, wherein the first grid-connected energy storage module determines the above-mentioned first power supply power according to the received power instruction, and operates according to the above-mentioned first power supply power.

[0162] The first grid-connected energy storage module mentioned above refers to an energy storage module whose operation mode is grid-connected operation among the currently operating energy storage modules.

[0163] The first off-grid energy storage module mentioned above refers to an energy storage module whose operation mode is off-grid operation among the currently operating energy storage modules.

[0164] The first power supply refers to the power supply operated by the first grid-connected energy storage module according to the received power instruction, and the power supply may be a rated power. When the control module detects the first grid-connected energy storage module operating in grid connection, it may send a power instruction for operating in accordance with a preset rated power (i.e., the first power supply) to the first grid-connected energy storage module, and the power instruction may be a pre-stored instruction or an instruction issued by the user through the control module, and the embodiment of the present application does not limit this.

[0165] In the embodiment of the present application, when it is determined that the currently operating energy storage module includes a first grid-connected energy storage module that is connected to the grid, a power instruction for operating in accordance with the first power supply power may be sent to the first grid-connected energy storage module, or it may be determined whether the first grid-connected energy storage module has been operating in accordance with the first power supply power in the power instruction received from the outside. The first power supply power 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 may be directly acquired.

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

[0168] Step 505: Determine the power supply power of each first off-grid energy storage module according to the first residual load power.

[0169] The following is a unified description of step 504 and step 505:

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

[0171] In an embodiment of the present application, after determining the first power supply power corresponding to the currently operating first grid-connected energy storage module, the first residual load power corresponding to all first off-grid energy storage modules can be determined based on the above-mentioned 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 supply powers corresponding to all first grid-connected energy storage modules may be determined to obtain the total first power supply power. Afterwards, the total first power supply power may be subtracted from the total load power to obtain the first residual load power.

[0173] Afterwards, the power supply power of each first off-grid energy storage module may be determined according to the first residual load power.

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

[0175] As another optional implementation, the second remaining power of each first off-grid energy storage module may be determined. The second remaining power may be the remaining power of the first off-grid energy storage module currently storing the SOC (System on Chip), for example, 60% of the power.

[0176] Afterwards, the second power generation ratio of all the first off-grid energy storage modules currently in operation can be determined according to the second remaining power of each first off-grid energy storage module. The second power generation ratio can be obtained by comparing the second remaining power corresponding to each first off-grid energy storage module. In addition, the second power generation ratio can also be pre-set according to the storage capacity of each first off-grid energy storage module, which is not limited in the embodiment of the present application.

[0177] Finally, the power supply power of each first off-grid energy storage module currently in operation can be determined according to the first residual load power and the second power generation ratio. As an implementation method, for each energy storage module, the first residual load power can be multiplied by the proportional value corresponding to the second off-grid energy storage module to obtain the power supply power corresponding to the first off-grid energy storage module. For example, assuming that the 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 proportional value corresponding to the first off-grid energy storage module 1 is 1 / 2, the proportional value corresponding to the first off-grid energy storage module 2 is 1 / 3, and the proportional value corresponding to the first off-grid energy storage module 3 is 1 / 6. Based on this, the power supply power corresponding to the first off-grid energy storage module 1 is: first residual load power*1 / 2; the power supply power corresponding to the first off-grid energy storage module 2 is: first residual load power*1 / 3; the power supply power corresponding to the first off-grid energy storage module 3 is: first residual load power*1 / 6.

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

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

[0180] As an exemplary implementation, when an externally input charging instruction is received, the first grid-connected energy storage module corresponding to the charging instruction can be determined as the target first grid-connected energy storage module to be charged. The charging instruction can be input by the user through the control module or remotely input through a remote control terminal, and the embodiment of the present application does not limit this.

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

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

[0183] As an exemplary implementation, the preset power to be charged of the target first grid-connected energy storage module may be obtained. As an implementation, the rated discharge power of the target first grid-connected energy storage module may be determined as the power to be charged.

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

[0185] Based on this, a charging instruction for indicating that power is supplied with the power to be charged may be determined according to the power to be charged.

[0186] Afterwards, a target first off-grid energy storage module for charging may be determined from the first off-grid energy storage modules.

[0187] As an optional implementation, a first off-grid energy storage module that currently stores the most electricity can be determined from the first off-grid energy storage modules, and the first off-grid energy storage module can be determined as the target first off-grid energy storage module for charging.

[0188] As another optional implementation, the first off-grid energy storage module that is currently idle or closest to the target first grid-connected energy storage module may be determined as the target first off-grid energy storage module.

[0189] Finally, the charging instruction may be 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 to be charged in the charging instruction.

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

[0191] The technical solution provided in the embodiment of the present application determines whether the operating modes of the at least two energy storage modules currently in operation are all off-grid operation when the modules currently in operation are at least two energy storage modules. If so, the power supply efficiency corresponding to each energy storage module is determined according to the above-mentioned 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 whose operating mode is grid-connected operation and a first off-grid energy storage module whose operating mode is off-grid operation, 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 above-mentioned first power supply power according to the received power instruction, and operates according to the above-mentioned first power supply power, determines the first residual load power corresponding to all the first off-grid energy storage modules according to the above-mentioned total load power and the first power supply power of each first grid-connected energy storage module, and determines the power supply power of each first off-grid energy storage module according to the above-mentioned first residual load power. This technical solution dynamically determines the power supply power of each currently operating energy storage module according to the grid-connected operation and off-grid operation modes of the energy storage modules when all currently operating modules are energy storage modules. This realizes that when all currently operating modules are energy storage modules, the power supply power of each energy storage module is dynamically determined according to the operation mode of each energy storage module, thereby saving electric energy and improving the power supply efficiency of the power supply module, thereby more efficiently providing electric energy to the load module and improving the utilization rate of electric energy.

[0192] See also Figure 6 , which is a flow chart of an embodiment of another power supply system control method provided in an embodiment of the present application. Figure 6 The process shown in Figure 3 Based on the process shown, it is described how to determine the power supply power of each power generation module and energy storage module currently in operation according to the total load power and the operation mode of each module when the currently operating modules include at least one power generation module and at least one energy storage module.

[0193] like Figure 6 As shown, the process may include the following steps:

[0194] Step 601, determine whether the operation mode of the currently running power generation modules is grid-connected operation, if so, execute step 602; if not, execute step 610.

[0195] Step 602, determine whether the operation mode of the currently running energy storage modules is off-grid operation, if so, execute step 603; if not, execute step 606.

[0196] Step 603: Obtain the second power supply power of each power generation module currently in operation, wherein the power generation module can determine the second power supply power according to the received power instruction and operate according to the second power supply power.

[0197] Step 604: Determine the second remaining load power corresponding to all currently operating energy storage modules based on the total load power and the second power supply power of each power generation module.

[0198] Step 605: Determine the power supply power of each energy storage module currently in operation according to the second residual load power.

[0199] The following is a unified description of steps 601 to 605:

[0200] The second power supply refers to the power supply of the power generation module currently connected to the grid according to the received power instruction, and the power supply may be a rated power. When the control module detects the power generation module connected to the grid, it may send a power instruction to the power generation module for operating according to the preset rated power (i.e., the second power supply), and the power instruction may be a pre-stored instruction or an instruction issued by the user through the control module, which is not limited in the embodiment of the present application.

[0201] The above-mentioned second residual load power refers to the total load power corresponding to all off-grid energy storage modules currently in operation.

[0202] In the embodiment of the present application, when it is determined that the currently operating modules include power generation modules and energy storage modules, it can be determined whether the operating modes of the currently operating power generation modules are all grid-connected. Optionally, if yes, step 602 is executed to continue to determine whether the currently operating energy storage modules are all off-grid. Optionally, if no, step 610 is executed.

[0203] In one embodiment, when it is determined that the operation modes of the currently operating power generation modules are all grid-connected operation, and the operation modes of the currently operating energy storage modules are all off-grid operation, when it is determined that the currently operating modules include grid-connected power generation modules, a power instruction for operating in accordance with the second power supply power may be sent to the power generation module, or it may be determined whether the power generation module has been operating in accordance with the second power supply power in the power instruction received from the outside. The second power supply power may be less than the total load power.

[0204] 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.

[0205] In an embodiment of the present application, after determining the second power supply power corresponding to the currently operating power generation module, the second residual load power corresponding to all currently operating off-grid energy storage modules can be determined based on the above-mentioned total load power and the second power supply power corresponding to each power generation module.

[0206] As an optional implementation, the sum of the second power supply powers corresponding to all power generation modules may be determined to obtain the total second power supply power. Afterwards, the total second power supply power may be subtracted from the total load power to obtain the second residual load power.

[0207] Afterwards, the power supply power of each off-grid energy storage module can be determined according to the second residual load power.

[0208] As an optional implementation, a third number of currently running energy storage modules may be determined, and the second residual load power may be divided by the third number to obtain the power supply power of each energy storage module.

[0209] As another optional implementation, a third remaining power of each energy storage module may be determined. The third remaining power may be the remaining power currently stored corresponding to the energy storage module currently operating off-grid, such as 60% of the power.

[0210] Afterwards, the third power generation ratio of all currently running energy storage modules can be determined according to the third remaining power of each energy storage module. The third power generation ratio can be obtained by comparing the third remaining power corresponding to each energy storage module. In addition, the third power generation ratio can also be pre-set according to the storage capacity of each energy storage module, which is not limited in the embodiment of the present application.

[0211] Finally, the power supply power of each energy storage module currently operating off-grid can be determined based on the above-mentioned second residual load power and the third power generation ratio. As an implementation method, for each energy storage module, the above-mentioned second residual load power can be multiplied by the proportional value corresponding to the energy storage module to obtain the power supply power corresponding to the energy storage module. For example, assuming that the above-mentioned third power generation ratio is: energy storage module 1: energy storage module 2: energy storage module 3 = 3:2:1, then the proportional value corresponding to energy storage module 1 is 1 / 2, the proportional value corresponding to energy storage module 2 is 1 / 3, and the proportional value corresponding to energy storage module 3 is 1 / 6. Based on this, the power supply power corresponding to energy storage module 1 is: second residual load power * 1 / 2; the power supply power corresponding to energy storage module 2 is: second residual load power * 1 / 3; the power supply power corresponding to energy storage module 3 is: second residual load power * 1 / 6.

[0212] Step 606: When it is determined that at least two currently operating energy storage modules include a second grid-connected energy storage module whose operation mode is grid-connected operation and a second off-grid energy storage module whose operation mode is off-grid operation, obtain a third power supply power of each currently operating power generation module, wherein the power generation module determines the third power supply power according to the received power instruction and operates according to the third power supply power.

[0213] Step 607: Obtain a fourth power supply power of each second grid-connected energy storage module, wherein each second grid-connected energy storage module determines the fourth power supply power according to the received power instruction and operates according to the fourth power supply power.

[0214] Step 608: Determine the third remaining load power corresponding to all the second off-grid energy storage modules according to the total load power, the third power supply power corresponding to each power generation module, and the fourth power supply power of each second grid-connected energy storage module.

[0215] Step 609: Determine the power supply power of each second off-grid energy storage module according to the third residual load power.

[0216] The following is a unified description of steps 606 to 609:

[0217] The third power supply refers to the power supply of the power generation module currently connected to the grid according to the received power instruction, and the power supply may be a rated power. When the control module detects the power generation module connected to the grid, it may send a power instruction to the power generation module for operating according to the preset rated power (that is, the third power supply), and the power instruction may be a pre-stored instruction or an instruction issued by the user through the control module, which is not limited in the embodiment of the present application.

[0218] The fourth power supply refers to the power supply of the energy storage module currently connected to the grid according to the received power command, and the power supply may be a rated power. When the control module detects the energy storage module connected to the grid, it may send a power command to the energy storage module for operating according to the preset rated power (i.e., the fourth power supply), and the power command may be a pre-stored command or a command issued by the user through the control module, which is not limited in the embodiment of the present application.

[0219] The third residual load power mentioned above refers to the total load power corresponding to the off-grid energy storage module currently operating off-grid.

[0220] In an embodiment of the present application, when it is determined that the currently operating module includes 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 instruction for operating according to a third power supply power can be sent to the power generation module, and a power instruction for operating according to a fourth power supply power can be sent to the second grid-connected energy storage module.

[0221] Alternatively, it is determined whether the power generation module has been operated according to the third power supply power in the power instruction received from the outside, and whether the second grid-connected energy storage module has been operated according to the fourth power supply power in the power instruction received from the outside. Wherein, the third power supply power and the fourth power supply power can both be less than the total load power.

[0222] Optionally, after determining the third power supply power corresponding to each power generation module, the third power supply power of each power generation module can be directly obtained.

[0223] Afterwards, after determining the fourth power supply power corresponding to each second grid-connected energy storage module, the fourth power supply power of each second grid-connected energy storage module can be directly obtained.

[0224] In an embodiment of the present application, after determining the third power supply power corresponding to the currently operating power generation module and the fourth power supply power corresponding to each second grid-connected energy storage module, when it is determined that there is a second off-grid energy storage module currently operating off-grid, the third residual load power corresponding to all the second off-grid energy storage modules currently operating can be determined based on the above-mentioned total load power, the third power supply power corresponding to each power generation module, and the fourth power supply power corresponding to each second grid-connected energy storage module.

[0225] As an optional implementation, the sum of the third power supplies corresponding to all power generation modules can be determined to obtain the total third power supply power, and the sum of the fourth power supplies corresponding to all second grid-connected energy storage modules can be determined to obtain the total fourth power supply power. Afterwards, the total third power supply power and the total fourth power supply power can be subtracted from the total load power to obtain the third residual load power.

[0226] Afterwards, the power supply power of each second off-grid energy storage module operating off-grid may be determined according to the third residual load power.

[0227] As an optional implementation, a fourth number of second off-grid energy storage modules currently in operation may be determined, and the third residual load power may be divided by the fourth number to obtain the power supply power of each second off-grid energy storage module.

[0228] As another optional implementation, the fourth remaining power of each second off-grid energy storage module may be determined. The fourth remaining power may be the remaining power corresponding to the second off-grid energy storage module currently operating off-grid.

[0229] Afterwards, the fourth power generation ratio of all the second off-grid energy storage modules currently in operation can be determined according to the fourth remaining power of each second off-grid energy storage module. The fourth power generation ratio can be obtained by comparing the fourth remaining power corresponding to each energy storage module. In addition, the fourth power generation ratio can also be pre-set according to the storage capacity of each second off-grid energy storage module, which is not limited in the embodiment of the present application.

[0230] Finally, the power supply power of each second off-grid energy storage module currently running off-grid can be determined according to the third residual load power and the fourth power generation ratio. As an implementation mode, for each second off-grid energy storage module, the third residual load power can be multiplied by the proportional value corresponding to the second off-grid energy storage module to obtain the power supply power corresponding to the second off-grid energy storage module. For example, assuming that the fourth power 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 proportional value corresponding to the second off-grid energy storage module 1 is 1 / 2, the proportional value corresponding to the second off-grid energy storage module 2 is 1 / 3, and the proportional value corresponding to the second off-grid energy storage module 3 is 1 / 6. Based on this, the power supply power corresponding to the second off-grid energy storage module 1 is: the third residual load power * 1 / 2; the power supply power corresponding to the second off-grid energy storage module 2 is: the third residual load power * 1 / 3; the power supply power corresponding to the second off-grid energy storage module 3 is: the third residual load power * 1 / 6.

[0231] Step 610: When it is determined 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, obtain the fifth power supply power of each currently operating energy storage module, wherein the above-mentioned energy storage modules determine the fifth power supply power according to the received power instructions, and operate according to the fifth power supply power.

[0232] Step 611: Determine the fourth remaining load power corresponding to all the power generation modules currently in operation according to the total load power and the fifth power supply power of each energy storage module.

[0233] Step 612: Determine the power generation amount of the currently operating power generation module.

[0234] Step 613: Divide the fourth residual load power by the power generation quantity to obtain the power supply power of each power generation module.

[0235] The following is a unified description of steps 610 to 613:

[0236] The fifth power supply refers to the power supply of the energy storage module currently connected to the grid according to the received power command, and the power supply may be a rated power. When the control module detects the energy storage module connected to the grid, it may send a power command to the energy storage module for operating according to the preset rated power (that is, the fifth power supply), and the power command may be a pre-stored command or a command issued by the user through the control module, which is not limited in the embodiment of the present application.

[0237] In an embodiment of the present application, when it is determined 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 currently operating energy storage module can be obtained.

[0238] When it is determined that the currently operating module includes a grid-connected energy storage module, a power instruction for operating according to the fifth power supply power may be sent to the energy storage module. Alternatively, it is determined whether the energy storage module has been operating according to the fifth power supply power in the power instruction received from the outside. The fifth power supply power may be less than the total load power.

[0239] Optionally, after determining the fifth power supply power corresponding to each energy storage module, the fifth power supply power of each energy storage module may be directly acquired.

[0240] Afterwards, after determining the fifth power supply power corresponding to each energy storage module, the fifth power supply power of each energy storage module can be directly obtained.

[0241] In the embodiment of the present application, after determining the fifth power supply power corresponding to the currently operating energy storage module, the fourth residual load power corresponding to all the currently operating power generation modules can be determined.

[0242] As an optional implementation, the sum of the fifth power supply powers corresponding to all energy storage modules may be determined to obtain the total fifth power supply power. Afterwards, the total fifth power supply power may be subtracted from the total load power to obtain the fourth residual load power.

[0243] Afterwards, the power supply power of each off-grid power generation module may be determined according to the fourth residual load power.

[0244] As an optional implementation method, the power generation quantity of the currently operating power generation module can be determined, and the fourth residual load power can be divided by the power generation quantity to obtain the power supply power of each power generation module.

[0245] In addition, when 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 energy storage modules that are connected to the grid.

[0246] As an optional implementation, one or more target energy storage modules to be charged in the energy storage modules whose current operation mode is grid-connected operation may be determined.

[0247] As an exemplary implementation, when an external charging instruction is received, the grid-connected energy storage module corresponding to the charging instruction can be determined as the target energy storage module to be charged. The charging instruction can be input by the user through the control module or remotely through a remote control terminal, and the embodiment of the present application does not limit this.

[0248] As another exemplary implementation, the amount of electricity currently stored in each grid-connected energy storage module may be determined, and when it is determined that the amount of electricity is less than a preset threshold value, the energy storage module corresponding to the amount of electricity is determined as the target energy storage module to be charged.

[0249] Optionally, when it is determined that there is a target module to be charged, the charging power of the target energy storage module may be determined.

[0250] As an exemplary implementation, in the case where the target energy storage module has a preset charging power, the target energy storage module may be charged separately according to the preset charging power.

[0251] As another exemplary implementation, in the case where the above-mentioned target storage module does not have a preset charging power, the current power proportion of each target energy storage module can be determined for the target energy storage module that does not have a preset charging power, and the target charging power for the target energy storage module can be determined based on the power proportion of each target energy storage module, and the power generation module can be controlled to charge the target energy storage module according to the above-mentioned target charging power. The above-mentioned power proportion refers to the power proportion value stored in the target energy storage module, such as 30% of the power stored in the energy storage module.

[0252] As another exemplary implementation, after determining one or more target energy storage modules to be charged, the proportion of electricity currently stored in each target energy storage module may be determined, and the proportion of electricity may be used to characterize the current electricity of the target energy storage module.

[0253] Based on this, the target charging power for the target energy storage module can be determined according to the power proportion of each target energy storage module, and the power generation module can be controlled to charge the target energy storage module according to the above target charging power.

[0254] Furthermore, in the process of charging the target energy storage module according to the above target charging power, if the current power ratio of the target energy storage module is greater than the 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 for the target energy storage module, the execution subject of the embodiment of the present application can determine the new target charging power of the target energy storage module according to the above target operation. Among them, the above target operation can be used to indicate that the target energy storage module is charged separately according to the new target charging power.

[0255] Afterwards, the target energy storage module can be charged individually according to the above new target charging power.

[0256] For example, the charging and discharging logic of grid-connected energy storage modules can be divided into two modes: "single power control" and "total power control".

[0257] Among them, power single control: the energy storage module can be charged independently according to its own manually set charging power value; each PCS adjusts the charging power in real time according to the proportion of the actual SOC (System on Chip). When any PCS reaches the SOC upper limit protection value b, the remaining charging power is automatically distributed to the remaining PCS according to the proportion of the actual SOC.

[0258] Power master control: The number of “online, grid-connected, master control” energy storage modules can be read.

[0259] Based on this, the total charging power is evenly distributed according to the manually set total charging power value. At this time, if one of the functional modules exits from the "power total control" mode, the set charging power value will be evenly distributed to the remaining energy storage modules participating in the power total control. The exited energy storage modules can be charged independently according to their current charging power setting values. Each PCS adjusts the 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.

[0260] The technical solution provided in the embodiment of the present application dynamically adjusts the power supply power of each power generation module and each energy storage module currently in operation according to the operation mode of the power generation module and the energy storage module currently in operation, wherein the power supply power of the grid-connected module can be preferentially determined as the rated power corresponding to the power instruction, and then the power supply power of each off-grid module is determined in the form of average distribution or proportional distribution for the off-grid modules, thereby realizing the determination of the power supply power of each module according to the operation mode of the power generation module and the energy storage module currently in operation, thereby saving electric energy and improving the power supply efficiency of the power supply module, thereby more efficiently providing electric energy to the load module and improving the utilization rate of electric energy.

[0261] See also Figure 7 , which is a flow chart of an embodiment of another power supply system control method provided in an embodiment of the present application. Figure 7 The process shown in Figure 6 Based on the process shown, it is described that when the currently running modules include multiple power generation modules and multiple energy storage modules, and the power generation module is a gas turbine generator set, the energy storage module specifically improves the stability of the power generation module. Figure 7 As shown, the process may include the following steps:

[0262] Step 701: Determine the combustion temperature of each gas turbine generator set.

[0263] Step 702: for each gas turbine generator set, when it is determined that the corresponding combustion temperature is greater than a preset first temperature threshold, a first target regulating power corresponding to the combustion temperature is determined from a first corresponding relationship between a preset temperature range and the regulating power according to the combustion temperature.

[0264] The following is a unified description of step 701 and step 702:

[0265] The above-mentioned gas turbine generator set refers to a set that generates electricity by burning gas to drive a generator.

[0266] The above combustion temperature refers to the temperature value corresponding to the combustion of gas by the gas turbine generator set during power generation. The higher the temperature value, the higher the power generation capacity of the gas turbine generator set.

[0267] The above-mentioned temperature range refers to a pre-set temperature range corresponding to a first temperature threshold value that is greater than a preset temperature. When the combustion temperature of the gas turbine generator set is within this temperature range, it indicates that the power generation power of the gas turbine generator set suddenly increases.

[0268] The first corresponding relationship refers to the corresponding relationship between different preset temperature ranges and corresponding adjustment powers.

[0269] The above-mentioned first temperature threshold is a pre-set temperature threshold that may cause damage to the gas turbine generator set. It can be the shutdown upper limit value of the gas turbine generator set, or it can be other set values, such as 930°C, 925°C, or 935°C, etc. The embodiment of the present application does not impose any restrictions on this.

[0270] In the embodiment of the present application, when the total load power of the load module suddenly increases or decreases, the power supply power of the gas turbine generator set may increase or decrease accordingly, which causes instability of the power generation module. Based on this, in order to prevent the instability of the power generation module caused by the sudden increase or decrease of the 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 the combustion temperature can characterize the stability of the gas turbine generator set.

[0271] Among them, the power supply power and the combustion temperature of the gas turbine generator set may be positively correlated, that is, the greater the power supply power of the gas turbine generator set, the higher the combustion temperature of the fuel therein. For example, the actual corresponding relationship between the power supply power and the combustion temperature may be shown in the following Table 1:

[0272] Table 1

[0273]

[0274] In this regard, the combustion temperature of each gas turbine generator set can be determined, and when it is determined that the combustion temperature is greater than a preset first temperature threshold, the first target regulating power corresponding to the combustion temperature can be determined based on the combustion temperature from the corresponding relationship between the preset temperature range and the regulating power. The above-mentioned first target regulating power is used to characterize the regulating power provided by the energy storage module required to improve the stability of the gas turbine generator set.

[0275] Step 703: When the currently operating energy storage module is in charging, adjust the power according to the first target to reduce the charging power of the energy storage module in the off-grid operation mode.

[0276] Step 704: When the currently operating energy storage module is in power supply, adjust the power according to the first target to increase the power supply of the energy storage module in off-grid operation mode.

[0277] The following is a unified description of step 703 and step 704:

[0278] In the embodiment of the present application, in order to achieve the effect of "peak shaving" for the power generation module, the control module can adjust the power supply power of the energy storage module currently operating off-grid according to the determined first target adjustment power.

[0279] As an optional implementation, when the currently operating energy storage module is in charging, the power can be adjusted according to the first target to reduce the charging power of the energy storage module in off-grid operation mode, thereby reducing the power supply of the power generation module.

[0280] As an exemplary implementation, different temperature ranges may correspond to different peak shaving instructions, and each peak shaving instruction may correspond to a charging power reduction value. Based on this, the target peak shaving instruction corresponding to the first target adjustment power may be determined, and the target peak shaving instruction may 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 instruction.

[0281] As another optional implementation, when the currently operating energy storage module is in power supply, the power can be adjusted according to the first target to increase the power supply of the energy storage module in off-grid operation mode, thereby reducing the power supply of the power generation module.

[0282] As an exemplary implementation, different temperature ranges may correspond to different peak shaving instructions, and each peak shaving instruction may correspond to a power supply increase value. Based on this, a target peak shaving instruction corresponding to the first target adjustment power may be determined, and the target peak shaving instruction may be sent to the corresponding off-grid energy storage module, so that the energy storage module increases its own power supply according to the power supply increase value corresponding to the target peak shaving instruction.

[0283] 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 is greater than a preset power threshold. When it is greater than the power threshold, the power interval to which the power generation belongs can be determined. The power interval can be a pre-set interval greater than the power threshold. When the power generation is greater than the power threshold, it indicates that the power generation of the power generation module has suddenly increased.

[0284] Furthermore, each power interval may correspond to a peak shaving instruction, and the peak shaving instruction is used to instruct the off-grid energy storage module to operate according to a preset target power.

[0285] The technical solution provided by the embodiment of the present application determines the combustion temperature of each gas turbine generator set. For each gas turbine generator set, when it is determined that the corresponding combustion temperature is greater than the preset first temperature threshold, the first target adjustment power corresponding to the combustion temperature is determined from the first corresponding relationship between the preset temperature range and the power supply power according to the above combustion temperature. When the currently operating energy storage module is in charging, the power is adjusted according to the first target to reduce the charging power of the energy storage module in the off-grid operation mode. When the currently operating energy storage module is in power supply, the power is adjusted according to the first target to increase the power supply power of the energy storage module in the off-grid operation mode. This technical solution reduces the power supply power of the gas turbine generator set 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 is determined to increase according to the first target. This achieves the effect of peak shaving on the power generation module when the power supply power of the power generation module suddenly increases, thereby improving the safety of the power generation module.

[0286] See also Figure 8 , is a flow chart of an embodiment of a control method for a power supply system provided in an embodiment of the present application. Figure 8 The process shown in Figure 6 Based on the process shown, it is described that when the currently operating module includes at least two power generation modules and at least two energy storage modules, and the power generation module is a gas turbine generator set, the energy storage module specifically improves the stability of the power generation module. Figure 8 As shown, the process may include the following steps:

[0287] Step 801: Determine the combustion temperature of each gas turbine power generation module.

[0288] Step 802: For each gas turbine power generation module, when it is determined that the corresponding combustion temperature is less than a preset second temperature threshold, a second target regulating power corresponding to the combustion temperature is determined based on the combustion temperature from a second corresponding relationship between a preset temperature range and the regulating power, wherein the second temperature threshold is less than the first temperature threshold.

[0289] The following is a unified description of step 801 and step 802:

[0290] The above-mentioned gas turbine generator set refers to a set that generates electricity by burning gas to drive a generator.

[0291] The above combustion temperature refers to the temperature value corresponding to the combustion of gas by the gas turbine generator set during power generation. The higher the temperature value, the higher the power generation capacity of the gas turbine generator set.

[0292] The above-mentioned temperature range refers to a preset temperature range corresponding to a second temperature threshold value that is less than a preset temperature. When the combustion temperature of the gas turbine generator set is within this temperature range, it indicates that the power generation power of the gas turbine generator set is suddenly reduced.

[0293] The second corresponding relationship mentioned above refers to the corresponding relationship between different preset temperature ranges and corresponding adjustment powers.

[0294] The above-mentioned second temperature threshold is a pre-set temperature threshold that may cause instability of the gas turbine generator set. It can be a preset proportional value of the shutdown upper limit value of the gas turbine generator set, or it can be other set values, such as 860°C, 870°C, or 890°C, etc. The embodiment of the present application does not impose any restrictions on this.

[0295] In the embodiment of the present application, when the total load power of the load module suddenly increases or decreases, the power supply power of the gas turbine generator set may increase or decrease accordingly, which causes instability of the power generation module. Based on this, in order to prevent the instability of the power generation module caused by the sudden increase or decrease of the 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 the combustion temperature can characterize the stability of the gas turbine generator set.

[0296] In the embodiment of the present application, when the total load power of the load module suddenly decreases, the power supply of the power generation module may decrease accordingly, which causes instability of the power generation module. Based on this, in order to prevent the instability of the gas turbine generator set caused by the sudden decrease in the total load power, the control module can detect the combustion temperature of each gas turbine generator set in real time.

[0297] In this regard, when it is detected that the combustion temperature of any gas turbine generator set is less than a preset second temperature threshold, the second target regulated power corresponding to the combustion temperature can be determined from a second correspondence between a preset temperature range and the regulated power according to the combustion temperature. The second target regulated power is used to characterize the power supply provided by the energy storage module required to improve the stability of the power generation module.

[0298] Step 803: When the currently operating energy storage module is being charged, adjust the power according to the second target, and increase the charging power of the energy storage module whose operation mode is off-grid operation.

[0299] Step 804: When the currently operating energy storage module is in power supply, adjust the power according to the second target to reduce the power supply of the energy storage module in the off-grid operation mode.

[0300] The following is a unified description of step 803 and step 804:

[0301] In the embodiment of the present application, in order to play the role of "filling the valley" for the power generation module, the control module can adjust the supply power or charging power of the energy storage module currently operating off-grid according to the determined second target adjustment power.

[0302] As an optional implementation, when the currently operating energy storage module is in charging, the power can be adjusted according to the second target to increase the charging power of the energy storage module in off-grid operation mode, thereby increasing the power supply power of the power generation module.

[0303] As an exemplary implementation, different power supply powers may correspond to different valley filling instructions, and each valley filling instruction may correspond to a charging power increase value. Based on this, the target valley filling instruction corresponding to the second target adjustment power may be determined, and the target valley filling instruction may be sent to the corresponding off-grid energy storage module, so that the energy storage module increases its own charging power according to the charging power increase value corresponding to the target valley filling instruction.

[0304] As another optional implementation, when the currently operating energy storage module is in power supply, the power can be adjusted according to the second target to reduce the power supply of the energy storage module in off-grid operation mode, thereby increasing the power supply of the power generation module.

[0305] As an exemplary implementation, different power supplies may correspond to different valley filling instructions, and each valley filling instruction may correspond to a power supply reduction value. Based on this, a target valley filling instruction corresponding to the second target regulated power may be determined, and the target valley filling instruction may 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 instruction.

[0306] 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 is less than the preset minimum power threshold. When it is less than the minimum power threshold, the target power interval to which the power generation belongs can be determined. The above target power interval can be a pre-set interval less than the power threshold. When the power generation is less than the minimum power threshold, it indicates that the power generation of the power generation module has suddenly decreased.

[0307] Furthermore, each power interval may correspond to a first valley filling instruction, and the valley filling instruction may be used to instruct the off-grid energy storage module to operate according to a preset target power.

[0308] The technical solution provided by the embodiment of the present application determines the combustion temperature of each gas turbine power generation module. For each gas turbine power generation module, when it is determined that the corresponding combustion temperature is less than the preset second temperature threshold, the second target adjustment power corresponding to the combustion temperature is determined from the second corresponding relationship between the preset temperature range and the adjustment power according to the combustion temperature, wherein the second temperature threshold is less than the first temperature threshold. When the currently operating energy storage module is in charging, the charging power of the energy storage module in the off-grid operation mode is increased according to the second target adjustment power, and when the currently operating energy storage module is in power supply mode, the power supply power of the energy storage module in the off-grid operation mode is reduced according to the second target adjustment power. This technical solution, when it is determined that the power supply power of the gas turbine generator set decreases according to the combustion temperature of the gas turbine generator set, the charging power of the off-grid energy storage module or the power supply module can be adjusted, thereby increasing the power supply power of the gas turbine generator set, and achieving the effect of filling the valley of the power generation module when the power supply power of the power generation module suddenly decreases, thereby improving the stability of the power generation module.

[0309] join Fig. 9 , is a block diagram of an embodiment of a control device for a power supply system provided in an embodiment of the present application. As an embodiment, the device can be applied to a control module in a power supply system, and the power supply system may include a 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 power supply system can be Figure 1 The power supply system shown in Figure 1 is as follows. Fig. 9 As shown, the device may include:

[0310] A first acquisition module 91 is used to acquire the current total load power of the load module during the process in which the parallel module supplies power to the load module;

[0311] A second acquisition module 92 is used to acquire the operation mode of each of the power generation modules and / or the energy storage modules currently in operation;

[0312] A determination module 93, configured to determine the power supply power of each of the power generation modules and / or the energy storage modules currently in operation according to the total load power and the operation mode;

[0313] 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.

[0314] like Fig.10As shown, it is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application, including a processor 1001, a communication interface 1002, a memory 1003 and a communication bus 1004, wherein the processor 1001, the communication interface 1002, and the memory 1003 communicate with each other through the communication bus 1004.

[0315] Memory 1003, used for storing computer programs;

[0316] In one embodiment of the present application, the processor 1001 is used to execute the program stored in the memory 1003 to implement the control method of the power supply system provided by any of the above method embodiments, wherein the power supply system includes the control module, the parallel module, at least one power generation module, at least one energy storage module, and a load module, wherein the parallel module is used to supply power to the load module, and the method includes:

[0317] In the process of the parallel module supplying power to the load module, obtaining the current total load power of the load module;

[0318] Obtaining an operating mode of each of the power generation modules and / or the energy storage modules currently in operation;

[0319] According to the total load power and the operating mode, the power supply power of each power generation module and / or the energy storage module currently in operation is determined, and the power generation module and / or the energy storage module is controlled to supply power to the parallel module according to the corresponding power supply power.

[0320] An embodiment of the present application further provides a storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the method for controlling a power supply system provided in any one of the aforementioned method embodiments are implemented.

[0321] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0322] Through the text of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiment.

[0323] It should be understood that the terms used in the text are only for the purpose of the specific example implementation of the text, and are not intended to be limited. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text can also be represented to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of the stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or their combinations. The method steps, processes, and operations of the text in the text are not interpreted as necessarily requiring them to be performed in the specific order of the text or description, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps can be used.

[0324] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be 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 present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A control method for a power supply system, characterized in that: A control module applied to a power supply system, the power supply system comprising 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 being used to supply power to the load module, the method comprising: In the process of the parallel module supplying power to the load module, obtaining the current total load power of the load module; Obtaining an operating mode of each of the power generation modules and / or the energy storage modules currently in operation; According to the total load power and the operating mode, the power supply power of each power generation module and / or the energy storage module currently in operation is determined, and the power generation module and / or the energy storage module is controlled to supply power to the parallel module according to the corresponding power supply power.

2. The method according to claim 1, characterized in that In the case where the currently operating modules are at least two energy storage modules, determining the power supply power of each of the currently operating power generation modules and / or energy storage modules according to the total load power and the operating mode includes: When it is determined that the operation modes of at least two of the energy storage modules currently in operation are both off-grid operation, determining a first number of the energy storage modules currently in operation; Dividing the total load power by the first number to obtain an 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, characterized in that In the case where the currently operating modules are at least two energy storage modules, determining the power supply power of each of the currently operating power generation modules and / or energy storage modules according to the total load power and the operating mode includes: When it is determined that the operation modes of at least two of the energy storage modules currently in operation are both off-grid operation, determining a first remaining power of each of the energy storage modules currently in operation; Determining a first power generation ratio of all the energy storage modules currently in operation according to the first remaining power of each of the energy storage modules; The power supply power of each of the energy storage modules currently in operation is determined according to the total load power and the first power generation ratio.

4. The method according to claim 2 or 3, characterized in that: The determining, according to the total load power and the operation mode, the power supply power of each of the power generation modules and / or the energy storage modules currently in operation comprises: In the case where it is determined that at least two of the currently operating energy storage modules include a first grid-connected energy storage module whose operation mode is grid-connected operation and a first off-grid energy storage module whose operation mode is off-grid operation, obtaining a first power supply power of each of the first grid-connected energy storage modules, wherein the first grid-connected energy storage module determines the first power supply power according to the received power instruction and operates according to the first power supply power; Determine a first residual load power corresponding to all of the first off-grid energy storage modules according to the total load power and the first power supply power of each of the first grid-connected energy storage modules; The power supply power of each of the first off-grid energy storage modules is determined according to the first residual load power.

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

6. The method according to claim 1, characterized in that In the case where the currently operating modules include at least one power generation module and at least one energy storage module, determining the power supply power of each of the currently operating power generation modules and / or energy storage modules according to the total load power and the operating mode includes: When it is determined that the operation modes of the currently operating power generation modules are all grid-connected operation, and the operation modes of the currently operating energy storage modules are all off-grid operation, the second power supply power of each of the currently operating power generation modules is obtained, wherein the power generation modules determine the second power supply power according to the received power instruction, and operate according to the second power supply power; Determine the second remaining load power corresponding to all the energy storage modules currently in operation according to the total load power and the second power supply power of each of the power generation modules; The power supply power of each of the energy storage modules currently in operation is determined according to the second residual load power.

7. The method according to claim 6, characterized in that Determining the power supply power of each of the power generation modules and / or the energy storage modules currently in operation according to the total load power and the operation mode includes: When it is determined that the operation modes of the currently operating power generation modules are all grid-connected operation, and it is determined that the currently operating multiple energy storage modules include a second grid-connected energy storage module whose operation mode is grid-connected operation and a second off-grid energy storage module whose operation mode is off-grid operation, a third power supply power of each of the currently operating power generation modules is obtained, wherein the power generation module determines the third power supply power according to the received power instruction, and operates according to the third power supply power; Obtaining a fourth power supply power of each of the second grid-connected energy storage modules, wherein each of the second grid-connected energy storage modules determines a fourth power supply power according to the received power instruction and operates according to the fourth power supply power; Determine the third remaining load power corresponding to all the second off-grid energy storage modules according to 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 power supply power of each of the second off-grid energy storage modules is determined according to the third residual load power.

8. The method according to claim 6, characterized in that Determining the power supply power of each of the power generation modules and / or the energy storage modules currently in operation according to the total load power and the operation mode includes: When it is determined that the operation modes of the currently operating power generation modules are all off-grid operation, and the operation modes of the currently operating energy storage modules are all grid-connected operation, obtaining the fifth power supply power of each of the currently operating energy storage modules, wherein the energy storage modules determine the fifth power supply power according to the received power instruction, and operate according to the fifth power supply power; Determine, according to the total load power and the fifth power supply power of each of the energy storage modules, the fourth residual load power corresponding to all the power generation modules currently in operation; Determine the power generation quantity of the power generation module currently in operation; The fourth residual load power is divided by the power generation quantity to obtain the power supply power of each power generation module.

9. The method according to claim 4, characterized in that The method further comprises: In the case where it is determined that there is a target first grid-connected energy storage module to be charged, determining the power to be charged of the target first grid-connected energy storage module; Determining, according to the power to be charged, a charging instruction for indicating power supply with the power to be charged; Determining a target first off-grid energy storage module for charging from the first off-grid energy storage modules; The charging instruction 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 power to be charged.

10. The method according to any one of claims 6 to 8, characterized in that: The method further comprises: In an energy storage module whose operation mode is grid-connected operation, determining one or more target energy storage modules to be charged; Determine the proportion of electricity currently stored in each of the target energy storage modules; determine the target charging power for the target energy storage module according to the proportion of electricity of each of the target energy storage modules, and control the power generation module to charge the target energy storage module according to the target charging power; In the process of charging the target energy storage module according to the target charging power, if a target operation for the target energy storage module is detected, 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 represent that the target energy storage module is charged separately according to the new target charging power.

11. The method according to claim 10, characterized in that The power generation module is a gas turbine generator set, and the method further comprises: determining a combustion temperature of each of said gas turbine generator sets; For each of the gas turbine generator sets, when it is determined that the corresponding combustion temperature is greater than a preset first temperature threshold, determining a first target regulating power corresponding to the combustion temperature from a first corresponding relationship between a preset temperature range and the regulating power according to the combustion temperature; When the currently operating energy storage module is in charging, adjusting the power according to the first target to reduce the charging power of the energy storage module in off-grid operation mode; When the currently operating energy storage module is in power supply, the power is adjusted according to the first target to increase the power supply of the energy storage module whose operating mode is off-grid operation.

12. The method according to claim 11, characterized in that The method further comprises: When it is determined that the combustion temperature is less than a preset second temperature threshold, determining a second target adjustment power corresponding to the combustion temperature from a second corresponding relationship between a preset temperature range and an adjustment power according to the combustion temperature; wherein the second temperature threshold is less than the first temperature threshold; When the currently operating energy storage module is in charging, adjusting the power according to the second target, and increasing the charging power of the energy storage module whose operating mode is off-grid operation; When the currently operating energy storage module is in power supply, the power is adjusted according to the second target to reduce the power supply power of the energy storage module whose operating mode is off-grid operation.

13. A power supply system, characterized in that: include: A control module, a power generation module set, an energy storage module set, a parallel module, and a load module, wherein the power generation module set includes at least one power generation module, and the energy storage module set includes at least one energy storage module; The control end of the control module is respectively connected to the first end of at least one power generation module in the power generation module set and the first end of at least one energy storage module in the energy storage module set; 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 used to connect to the first end of the parallel module; wherein the parallel 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, characterized in that: 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 a first transmission line, and a first voltage output by the first transmission line is greater than a 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 respectively connected to the input end of the distribution skid and the input end of the parallel cabinet, and the busbar is used to provide a second voltage for the distribution skid and the parallel cabinet; the second voltage is less than a preset second voltage threshold; The output end of the parallel cabinet is connected to the input end of the distribution skid through the first transmission line and the second transmission line; the third voltage output by the second 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, characterized in that: 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 submodule through the first transmission line; The output end of the power distribution skid is connected to the input end of the low-voltage load sub-module through the second transmission line.

16. A control device for a power supply system, characterized in that: A control module applied to a power supply system, the power supply system comprising 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 being used to supply power to the load module, the device comprising: A first acquisition module, used for acquiring the current total load power of the load module during the process of the parallel module supplying power to the load module; A second acquisition module is used to acquire the operation mode of each of the power generation modules and / or the energy storage modules currently in operation; A determination module, used to determine the power supply power of each of the power generation modules and / or the energy storage modules currently in operation according to the total load power and the operation 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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