Energy storage power automatic control method and device, computer equipment and readable storage medium

Abstract

The invention relates to an energy storage power automatic control method and device, computer equipment and a computer readable storage medium, and relates to the technical field of power system power automatic control. The method comprises the following steps: acquiring a real-time control interval, real-time output power and frequency modulation bid-winning capacity of each energy storage power generation unit in an energy storage control area of a power grid; according to the real-time control interval, the real-time output power and the frequency modulation bid-winning capacity of each energy storage power generation unit, determining the total regulation demand of the energy storage control area; the total regulation demand quantity represents a to-be-regulated power value of the energy storage control area; distributing the total regulation demand quantity of the energy storage control area to each energy storage power generation unit to obtain a demand regulation quantity corresponding to each energy storage power generation unit; and according to the real-time output power, the target control interval and the demand adjustment amount of each energy storage power generation unit, obtaining the target power of each energy storage power generation unit, and sending each target power to the corresponding energy storage power generation unit. By adopting the method, the control accuracy of the energy storage power generation unit can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of automatic power control of electric power systems, and in particular to a method, device, computer equipment and computer-readable storage medium for automatic power control of energy storage. Background Art

[0002] Automatic generation control, referred to as AGC (Automatic Generation Control), is a basic function of modern power system control. It tracks the load changes of the power system by controlling the active output of the generator, thereby maintaining the frequency equal to the rated value, and at the same time meeting the planned power exchange requirements between interconnected power systems. With the development of energy storage technology, more and more energy storage elements are connected to the power system. The energy storage power generation unit has the characteristics of fast adjustment rate, high adjustment accuracy, and bidirectional power adjustment. Compared with conventional hydro-thermal power units, the energy storage power generation unit has an extremely fast adjustment rate, bidirectional power adjustment, and the output is greatly affected by SOC (State of Charge), and it cannot be continuously charged / discharged in one direction for a long time. The operating control logic of the two is quite different. Therefore, the current automatic generation control technology has the problem of low accuracy in the control of energy storage power generation units. Summary of the invention

[0003] Based on this, it is necessary to provide a method, device, computer equipment and computer-readable storage medium for automatic energy storage power control that can improve the accuracy of energy storage power generation unit control in order to solve the above technical problems.

[0004] In a first aspect, the present application provides a method for automatic control of energy storage power, comprising:

[0005] Obtain the real-time control range, real-time output power and frequency regulation winning capacity of each energy storage power generation unit in the energy storage control area of ​​the power grid;

[0006] According to the real-time control interval, real-time output power and frequency regulation winning capacity of each energy storage power generation unit, the total regulation demand of the energy storage control area is determined; the total regulation demand represents the power value to be regulated in the energy storage control area;

[0007] Allocate the total regulation demand of the energy storage control area to each energy storage power generation unit to obtain the demand regulation corresponding to each energy storage power generation unit;

[0008] According to the real-time output power, target control range and demand adjustment amount of each energy storage power generation unit, the target power of each energy storage power generation unit is obtained, and each target power is sent to the corresponding energy storage power generation unit.

[0009] In one embodiment, the real-time output power, target control interval and demand adjustment amount of the energy storage power generation unit are obtained before the target power of each energy storage power generation unit is obtained, and the following steps are also included:

[0010] Obtain the real-time state of charge of each energy storage power generation unit and the preset state of charge control target;

[0011] Determine the state of charge deviation of the energy storage power generation unit according to the real-time state of charge and the preset state of charge control target;

[0012] Determining a control interval correction coefficient according to a state of charge deviation, a preset correction start value, and a preset correction end value;

[0013] The target control range is determined based on the control range correction coefficient, the frequency regulation winning capacity of the energy storage power generation unit and the real-time control range.

[0014] In one embodiment, sending each target power to the corresponding energy storage power generation unit respectively includes:

[0015] Determine the adjustment order of each energy storage power generation unit according to the positive and negative conditions of the total adjustment demand and the charging and discharging conditions of each energy storage power generation unit;

[0016] The target power of each energy storage power generation unit is sent to the corresponding energy storage power generation unit according to the adjustment order.

[0017] In one embodiment, the regulation order of each energy storage power generation unit is determined according to the positive and negative conditions of the total regulation demand and the charging and discharging conditions of all energy storage power generation units, including:

[0018] When the total regulation demand is positive and the charge / discharge condition of at least one energy storage power generation unit is in the charging state, the regulation order of the energy storage power generation unit in the charging state is determined to take precedence over the energy storage power generation unit in the discharging state;

[0019] When the total regulation demand is negative and the charge and discharge status of at least one energy storage power generation unit is in the discharge state, the regulation order of the energy storage power generation unit determined to be in the discharge state takes precedence over the energy storage power generation unit whose charge and discharge status is in the charging state.

[0020] In one embodiment, the total regulation demand of the energy storage control area is distributed to each energy storage power generation unit to obtain the demand regulation amount corresponding to each energy storage power generation unit, including:

[0021] When the total regulation demand is positive, the demand regulation corresponding to each energy storage power generation unit is determined according to the total regulation demand, the control interval correction coefficient, and the first parameter set corresponding to each energy storage power generation unit; the first parameter set includes the upper limit of the control interval, the real-time output power, the real-time state of charge, the preset lower limit of the state of charge and the rated power;

[0022] When the total regulation demand is negative, the demand regulation amount corresponding to each energy storage power generation unit is determined according to the total regulation demand, the control interval correction coefficient, and the second parameter set corresponding to each energy storage power generation unit; the second parameter set includes the lower limit of the control interval, the real-time output power, the real-time state of charge, the preset upper limit of the state of charge and the rated power.

[0023] In one embodiment, the target power of each energy storage power generation unit is obtained according to the real-time output power, target control interval and demand adjustment amount of each energy storage power generation unit, including:

[0024] According to the sum of the demand adjustment amount and the real-time output power corresponding to each energy storage power generation unit, the initial target power of each energy storage power generation unit is obtained;

[0025] When the initial target power belongs to the target control interval, the initial target power is used as the target power of the energy storage power generation unit;

[0026] When the initial target power exceeds the target control interval, a power value with the smallest difference from the initial target power is determined from the target control interval, and the power value is used as the target power.

[0027] In one embodiment, the total regulation demand of the energy storage control area is determined according to the real-time control interval, real-time output power and frequency regulation winning capacity of each energy storage power generation unit, including:

[0028] Determine the real-time output power of the energy storage control area according to the sum of the real-time output power of each energy storage power generation unit;

[0029] Determine the control range of the energy storage control area based on the frequency regulation bid winning capacity and real-time control range of each energy storage power generation unit;

[0030] Send the real-time output power and control interval of the energy storage control area to the conventional automatic power generation control system;

[0031] Obtaining a control target for the energy storage control area; the control target for the energy storage control area is determined by a conventional automatic power generation control system based on the real-time output power of the energy storage control area, the control range of the energy storage control area, and the real-time operation status of the power grid;

[0032] The total regulation demand of the energy storage control area is determined based on the control target of the energy storage control area, the real-time output power of each energy storage power generation unit and the historical demand adjustment amount; the historical demand adjustment amount is the difference between the historical output power of the energy storage power generation unit and the historical control target of the energy storage power generation unit during the validity period of the last execution of the control instruction.

[0033] In a second aspect, the present application also provides an energy storage power automatic control device, comprising:

[0034] A data acquisition module is used to obtain the real-time control range, real-time output power and frequency modulation bid capacity of each energy storage power generation unit in the energy storage control area of ​​the power grid;

[0035] The total regulation amount determination module is used to determine the total regulation demand of the energy storage control area according to the real-time control interval, real-time output power and frequency regulation winning capacity of each energy storage power generation unit; the total regulation demand represents the power value to be adjusted in the energy storage control area;

[0036] A sub-regulation amount determination module is used to distribute the total regulation demand of the energy storage control area to each energy storage power generation unit to obtain the demand regulation amount corresponding to each energy storage power generation unit;

[0037] The target power determination module is used to obtain the target power of each energy storage power generation unit according to the real-time output power, target control interval and demand adjustment amount of each energy storage power generation unit, and send each target power to the corresponding energy storage power generation unit respectively.

[0038] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0039] Obtain the real-time control range, real-time output power and frequency regulation winning capacity of each energy storage power generation unit in the energy storage control area of ​​the power grid;

[0040] According to the real-time control interval, real-time output power and frequency regulation winning capacity of each energy storage power generation unit, the total regulation demand of the energy storage control area is determined; the total regulation demand represents the power value to be regulated in the energy storage control area;

[0041] Allocate the total regulation demand of the energy storage control area to each energy storage power generation unit to obtain the demand regulation corresponding to each energy storage power generation unit;

[0042] According to the real-time output power, target control range and demand adjustment amount of each energy storage power generation unit, the target power of each energy storage power generation unit is obtained, and each target power is sent to the corresponding energy storage power generation unit.

[0043] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the following steps are implemented:

[0044] Obtain the real-time control range, real-time output power and frequency regulation winning capacity of each energy storage power generation unit in the energy storage control area of ​​the power grid;

[0045] According to the real-time control interval, real-time output power and frequency regulation winning capacity of each energy storage power generation unit, the total regulation demand of the energy storage control area is determined; the total regulation demand represents the power value to be regulated in the energy storage control area;

[0046] Allocate the total regulation demand of the energy storage control area to each energy storage power generation unit to obtain the demand regulation corresponding to each energy storage power generation unit;

[0047] According to the real-time output power, target control range and demand adjustment amount of each energy storage power generation unit, the target power of each energy storage power generation unit is obtained, and each target power is sent to the corresponding energy storage power generation unit.

[0048] The above energy storage power automatic control method, device, computer equipment, computer readable storage medium and computer program product obtain the real-time control interval, real-time output power and frequency modulation winning capacity of each energy storage power generation unit in the energy storage control area of ​​the power grid, and understand the operation status of each energy storage power generation unit in real time to determine the corresponding deviation. Further, according to the real-time control interval, real-time output power and frequency modulation winning capacity of each energy storage power generation unit, the total regulation demand of the energy storage control area is determined. Among them, the total regulation demand represents the power value to be adjusted in the energy storage control area. Aggregate the parameters of each energy storage power generation unit, and determine the total regulation demand of the energy storage control area according to the conventional control logic through the automatic power generation control system. Then the total regulation demand of the energy storage control area is distributed to each energy storage power generation unit to obtain the demand regulation corresponding to each energy storage power generation unit, and according to the real-time output power, target control interval and demand regulation of each energy storage power generation unit, the target power of each energy storage power generation unit is obtained, and each target power is sent to the corresponding energy storage power generation unit respectively, so that the energy storage power generation unit is controlled to output according to the target power generation. According to the control parameters in multiple dimensions and the control logic that is adapted to the energy storage control area and different from the conventional automatic power generation control, the power of each energy storage power generation unit is adjusted, thereby improving the accuracy of the control of the energy storage power generation unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0050] FIG1 is an application environment diagram of an energy storage power automatic control method in one embodiment;

[0051] FIG2 is a schematic diagram of a flow chart of a method for automatically controlling energy storage power in one embodiment;

[0052] FIG3 is a schematic flow chart of a target power determination step in one embodiment;

[0053] FIG4 is a flow chart of a method for energy storage participating in power grid frequency regulation control considering SOC control in one embodiment;

[0054] FIG5 is a block diagram of a device for automatically controlling energy storage power in one embodiment;

[0055] FIG. 6 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0057] The energy storage power automatic control method provided in the embodiment of the present application can be applied in the application environment shown in FIG1. ​​The application scenario includes: a power grid 102 and a server 104; wherein the power grid 102 includes an energy storage control area 106 and a conventional power generation area 108, and the energy storage control area 106 includes multiple energy storage power generation units 110. The power grid 102 communicates with the server 104 through a network. The server 104 can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. Among them, an energy storage automatic power generation control system can be deployed in the server 104, and the energy storage automatic power generation control system is used to control the energy storage control area. The server 104 may also be set to deploy a conventional automatic power generation control system on the server to control the conventional power generation area and energy storage control area of ​​the power grid. The server 104 obtains the real-time control interval, real-time output power and frequency modulation winning capacity of each energy storage power generation unit 110 in the energy storage control area 106 of the power grid. Furthermore, the server 104 determines the total regulation demand of the energy storage control area 106 according to the real-time control interval, real-time output power and frequency modulation winning capacity of each energy storage power generation unit 110. The total regulation demand represents the power value to be adjusted in the energy storage control area 106, which needs to be determined jointly by the energy storage automatic power generation control system and the conventional automatic power generation control system. The server 104 also distributes the total regulation demand of the energy storage control area 106 to each energy storage power generation unit 110, obtains the demand regulation amount corresponding to each energy storage power generation unit 110, and then obtains the target power of each energy storage power generation unit 110 according to the real-time output power, target control interval and demand regulation amount of each energy storage power generation unit 110, and sends each target power to the corresponding energy storage power generation unit 110 respectively.

[0058] In an exemplary embodiment, as shown in FIG2 , a method for automatically controlling energy storage power is provided, which is described by taking the method applied to the server 104 in FIG1 as an example, and includes the following steps S202 to S208 . Among them:

[0059] Step S202, obtaining the real-time control interval, real-time output power and frequency regulation winning capacity of each energy storage power generation unit in the energy storage control area of ​​the power grid.

[0060] The energy storage control area may be an area in the power system specifically used to store electric energy, including multiple energy storage power generation units. The energy storage power generation unit may be a device or system used to store and release electric energy in the energy storage control area, such as an independent energy storage power station.

[0061] The real-time control interval may be an interval with the maximum discharge power of each energy storage power generation unit at the current moment as the upper limit and the maximum charge power as the lower limit, or may be expressed as the real-time output interval of each energy storage power generation unit.

[0062] The real-time output power may be the real-time output of the energy storage power generation unit, indicating the actual power output that can be provided at a certain moment.

[0063] Among them, the frequency regulation winning capacity can be the power capacity that the energy storage power generation unit can provide when participating in grid frequency regulation.

[0064] Optionally, the server obtains real-time operation data and control mode related data of each energy storage power generation unit in the energy storage control area of ​​the power grid through the energy storage automatic power generation control system, including real-time control interval, real-time output power and frequency modulation winning capacity.

[0065] Step S204, determining the total regulation demand of the energy storage control area according to the real-time control interval, real-time output power and frequency regulation winning capacity of each energy storage power generation unit.

[0066] Among them, the total regulation demand represents the power value to be adjusted in the energy storage control area.

[0067] Optionally, the server aggregates the energy storage power generation units according to the real-time control interval, real-time output power and frequency regulation winning capacity of each energy storage power generation unit, models them in the conventional automatic power generation control system in the form of power generation units, and receives the regulation of the conventional automatic power generation control system. According to the data sent by the conventional automatic power generation control system, the total regulation demand of the energy storage control area is determined.

[0068] Step S206, allocating the total regulation demand of the energy storage control area to each energy storage power generation unit to obtain the demand regulation amount corresponding to each energy storage power generation unit.

[0069] The demand adjustment may be the power value to be adjusted corresponding to any energy storage power generation unit.

[0070] Optionally, the server calculates the demand adjustment amount corresponding to each storage power generation unit according to the total regulation demand of the energy storage control area, multiple parameters of each energy storage power generation unit and a preset demand adjustment algorithm. In addition, the demand adjustment amount actually allocated to each energy storage power generation unit will also be affected by the allocation strategy and determined by multiple dimensional influencing factors. It should be noted that the energy storage power generation unit whose demand adjustment amount is not 0 is an energy storage power generation unit participating in power regulation.

[0071] Step S208, obtaining the target power of each energy storage power generation unit according to the real-time output power, target control interval and demand adjustment amount of each energy storage power generation unit, and sending each target power to the corresponding energy storage power generation unit respectively.

[0072] The target control interval may be an interval range determined based on the real-time control interval and operating parameters of the energy storage power generation unit, representing the target power range that the energy storage power generation unit needs to adjust.

[0073] Optionally, the server determines a preliminary allocated power value based on the real-time output power and demand adjustment amount of each energy storage power generation unit, and further determines the target power to which each energy storage power generation unit actually needs to be adjusted based on the target control interval, and sends it to the energy storage power generation unit corresponding to each target power, respectively, to control the energy storage power generation unit to output according to the target power.

[0074] In the above energy storage power automatic control method, by obtaining the real-time control interval, real-time output power and frequency modulation winning capacity of each energy storage power generation unit in the energy storage control area of ​​the power grid, the operation status of each energy storage power generation unit is understood in real time to determine the corresponding deviation. Further, according to the real-time control interval, real-time output power and frequency modulation winning capacity of each energy storage power generation unit, the total regulation demand of the energy storage control area is determined. Among them, the total regulation demand represents the power value to be adjusted in the energy storage control area. Aggregate the parameters of each energy storage power generation unit, and determine the total regulation demand of the energy storage control area according to the conventional control logic through the automatic power generation control system. Then the total regulation demand of the energy storage control area is distributed to each energy storage power generation unit to obtain the demand regulation corresponding to each energy storage power generation unit, and according to the real-time output power, target control interval and demand regulation of each energy storage power generation unit, the target power of each energy storage power generation unit is obtained, and each target power is sent to the corresponding energy storage power generation unit respectively, so that the energy storage power generation unit is controlled to output according to the target power generation. According to the control parameters in multiple dimensions and the control logic that is adapted to the energy storage control area and different from the conventional automatic power generation control, the power of each energy storage power generation unit is adjusted, thereby improving the accuracy of the control of the energy storage power generation unit.

[0075] In an exemplary embodiment, before obtaining the target power of each energy storage power generation unit according to the real-time output power, target control interval and demand adjustment amount of each energy storage power generation unit, the method further includes:

[0076] The real-time state of charge and the preset state of charge control target of each energy storage power generation unit are obtained; the state of charge deviation of the energy storage power generation unit is determined according to the real-time state of charge and the preset state of charge control target; the control interval correction coefficient is determined according to the state of charge deviation, the preset correction start value and the preset correction end value; the target control interval is determined according to the control interval correction coefficient, the frequency modulation winning capacity of the energy storage power generation unit and the real-time control interval.

[0077] Among them, the real-time state of charge can be the power level of the energy storage power generation unit at the current moment, expressed as a percentage, reflecting the charging state of the energy storage unit. The preset state of charge control target can be the target value pre-set by the system for the current state of charge of the energy storage power generation unit, which can be adjusted according to actual needs, usually constrained to 30% to 70%. The state of charge deviation can be the difference between the actual state of charge of the energy storage power generation unit at the current moment and the preset state of charge control target.

[0078] Among them, the preset correction start value can be the threshold value at which the charge state of the energy storage power generation unit preset by the system reaches the correction-capable threshold, and the preset correction cutoff value can be the threshold value at which the charge state of the energy storage power generation unit preset by the system reaches the correction-capable threshold during the correction process.

[0079] The control interval correction coefficient may refer to a coefficient added to the calculation formula in order to make it reflect the actual performance as much as possible when deviations occur in data calculation, formula expression, etc. due to ideal and reality, reality and investigation, etc.

[0080] Optionally, the server obtains the real-time load state and the preset state of charge control target of each energy storage power generation unit, and determines the state of charge deviation of the energy storage power generation unit according to the difference between the real-time load state and the preset state of charge control target. The corresponding formula is:

[0081]

[0082] in, is the state of charge deviation of the energy storage power generation unit, is the real-time load status, It is the preset state of charge control target.

[0083] The server determines the control interval correction coefficient according to the charge state deviation, the preset correction start value and the preset correction end value, including the upper limit correction coefficient and the lower limit correction coefficient of the control interval. The corresponding formula is:

[0084]

[0085]

[0086] in, is the upper limit correction coefficient of the control interval, is the preset correction start value, is the preset correction cutoff value, is the lower limit correction coefficient of the control interval.

[0087] The server determines the target control interval, including the upper limit of the target control interval and the lower limit of the target control interval, based on the control interval correction coefficient, the frequency regulation bid capacity of the energy storage power generation unit, and the upper and lower limits of the real-time control interval. The corresponding formula is:

[0088]

[0089]

[0090] in, is the upper limit of the target control interval, For the frequency modulation bidding capacity, is the upper limit of the real-time control interval, It is the lower limit of the real-time control range.

[0091] In this embodiment, by real-time monitoring of the state of charge (SOC) of the energy storage power generation unit and comparing it with the preset control target, the energy state of the current system can be effectively identified, and the state of charge deviation can be obtained, so as to dynamically adjust the control range of the energy storage power generation unit, which can flexibly respond to the load changes of the power grid, provide support for the frequency regulation of the power grid, and improve the frequency regulation accuracy of the energy storage control area.

[0092] In an exemplary embodiment, as shown in FIG3 , step S208 sends each target power to the corresponding energy storage power generation unit, including the following steps S302 to S304 . Among them:

[0093] Step S302, determining the adjustment order of each energy storage power generation unit according to the positive or negative situation of the total adjustment demand and the charging and discharging situation of each energy storage power generation unit.

[0094] The positive or negative situation may be the positive or negative situation of the value of the total regulation demand, indicating that the energy storage power generation unit needs to adjust the charging power or the discharging power.

[0095] Among them, the charging and discharging conditions may include the energy storage power generation unit being in a charging state or a discharging state, and the charging state is a state in which the energy storage power generation unit receives external electrical energy and converts it into stored energy.

[0096] The adjustment order may be the power adjustment priority order of each energy storage power generation unit in the energy storage control area.

[0097] Optionally, the server uses a strategy of charging and discharging the units according to the positive and negative conditions of the total regulation demand and the charging and discharging conditions of each energy storage and power generation unit. If the total regulation demand is the reverse power of any energy storage and power generation unit, the server adopts the same charging and discharging strategy and sorts them according to the deviation of the power to obtain the regulation order of each energy storage and power generation unit.

[0098] Step S304: sending the target powers of the energy storage and power generation units to the corresponding energy storage and power generation units according to the adjustment order.

[0099] Optionally, the server sends the target powers of each energy storage power generation unit to the corresponding energy storage power generation unit according to the adjustment order, so as to control the energy storage power generation unit to output according to the target power.

[0100] In this embodiment, the adjustment order of each energy storage power generation unit is determined by the positive and negative conditions of the total regulation demand and the charging and discharging conditions of each energy storage power generation unit using a strategy of simultaneous charging and discharging, thereby avoiding the existence of energy storage power generation units in both charging and discharging states in the same energy storage control area, thereby improving the operating efficiency of the power grid.

[0101] In an exemplary embodiment, step S302 determines the adjustment order of each energy storage power generation unit according to the positive or negative condition of the total adjustment demand and the charging and discharging conditions of all energy storage power generation units, including:

[0102] When the positive or negative condition of the total regulation demand is positive, and the charge and discharge condition of at least one energy storage power generation unit is in the charging state, the regulation order of the energy storage power generation unit determined to be in the charging state takes precedence over the energy storage power generation unit determined to be in the discharging state; when the positive or negative condition of the total regulation demand is negative, and the charge and discharge condition of at least one energy storage power generation unit is in the discharging state, the regulation order of the energy storage power generation unit determined to be in the discharging state takes precedence over the energy storage power generation unit determined to be in the charging state.

[0103] Optionally, when the positive and negative conditions of the total regulation demand are positive, and the charge and discharge conditions of at least one energy storage power generation unit are in the charging state, the server determines that the regulation order of the energy storage power generation unit in the charging state takes precedence over the energy storage power generation unit in the discharging state, and when sending the target power, it is first allocated to the energy storage power generation unit in the charging state, and after such energy storage power generation units are allocated or there are energy storage units in the charging state but cannot respond to the target power allocation, they are allocated to the energy storage power generation units in the discharging state. When the positive and negative conditions of the total regulation demand are negative, and the charge and discharge conditions of at least one energy storage power generation unit are in the discharging state, it is determined that the regulation order of the energy storage power generation unit in the discharging state takes precedence over the energy storage power generation unit in the charging state, and the target power is allocated according to the regulation order according to similar allocation logic. In addition, energy storage power generation units with the same charge and discharge conditions can be allocated to the target power generation power at the same time.

[0104] It should be noted that, in the case where there are no energy storage power generation units in the charging state and the discharging state in the energy storage control area at the same time, regardless of whether the total regulation demand is positive or negative, the regulation order of each energy storage power generation unit may not have a priority, and the target power is allocated to each energy storage power generation unit at the same time. Alternatively, in the cases described in this embodiment, the regulation order is determined not only according to the positive or negative situation of the total regulation demand and the charging and discharging situation of each energy storage power generation unit, but also according to actual needs and urgency.

[0105] In this embodiment, the combination of the positive and negative conditions of the total regulation demand and the charging and discharging conditions of each energy storage power generation unit is further limited, and the strategy of simultaneous charging and discharging is adopted to determine the regulation order of each energy storage power generation unit, so as to avoid the existence of energy storage power generation units in both charging and discharging states in the same energy storage control area, thereby improving the operating efficiency of the power grid.

[0106] In an exemplary embodiment, step S206 distributes the total regulation demand of the energy storage control area to each energy storage power generation unit to obtain the demand regulation amount corresponding to each energy storage power generation unit, including:

[0107] When the total regulation demand is positive, the demand regulation amount corresponding to each energy storage power generation unit is determined according to the total regulation demand, the control interval correction coefficient, and the first parameter set corresponding to each energy storage power generation unit; when the total regulation demand is negative, the demand regulation amount corresponding to each energy storage power generation unit is determined according to the total regulation demand, the control interval correction coefficient, and the second parameter set corresponding to each energy storage power generation unit.

[0108] Among them, the first parameter set includes the upper limit of the control interval, the real-time output power, the real-time state of charge, the preset lower limit of the state of charge and the rated power.

[0109] Among them, the second parameter set includes the lower limit of the control interval, the real-time output power, the real-time state of charge, the preset upper limit of the state of charge and the rated power.

[0110] Optionally, when the total regulation demand is positive, the server determines the demand regulation amount corresponding to each energy storage power generation unit according to the total regulation demand, the control interval correction coefficient, and the first parameter set corresponding to each energy storage power generation unit. The corresponding formula is:

[0111]

[0112] in, Indicates the demand adjustment corresponding to each energy storage power generation unit, represents the total regulation demand, represents the control interval correction coefficient, Indicates the upper limit of the control range of each energy storage power generation unit, Indicates the real-time output power of each energy storage power generation unit, Indicates the real-time charge status of each energy storage and power generation unit. Indicates the preset lower limit of the charge state of each energy storage power generation unit. Indicates the rated capacity of each energy storage power generation unit.

[0113] When the total regulation demand is negative, the server determines the demand regulation corresponding to each energy storage power generation unit according to the total regulation demand, the control interval correction coefficient, and the second parameter set corresponding to each energy storage power generation unit. The corresponding formula is:

[0114]

[0115] in, Indicates the demand adjustment corresponding to each energy storage power generation unit, represents the total regulation demand, represents the control interval correction coefficient, Indicates the lower limit of the control range of each energy storage power generation unit, Indicates the real-time output power of each energy storage power generation unit, Indicates the real-time charge status of each energy storage and power generation unit. Indicates the preset upper limit of the state of charge of each energy storage power generation unit. Indicates the rated capacity of each energy storage power generation unit.

[0116] In this embodiment, under different circumstances of the total regulation demand, the demand regulation amount of each energy storage power generation unit is determined respectively by the charge state of each energy storage power generation unit and the upper and lower limits of the control interval, taking into account the charge state of the energy storage power generation unit and the parameters of the energy storage power generation unit in multiple dimensions, thereby improving the calculation accuracy of the demand regulation amount of each energy storage power generation unit and further improving the accuracy of the control of the energy storage power generation unit.

[0117] In an exemplary embodiment, step S208 obtains the target power of each energy storage power generation unit according to the real-time output power, target control interval and demand adjustment amount of each energy storage power generation unit, including:

[0118] The initial target power of each energy storage power generation unit is obtained according to the sum of the demand adjustment amount and the real-time output power corresponding to each energy storage power generation unit; when the initial target power belongs to the target control interval, the initial target power is used as the target power of the energy storage power generation unit; when the initial target power exceeds the target control interval, the power value with the smallest difference with the initial target power is determined from the target control interval, and the power value is used as the target power.

[0119] Optionally, the server obtains the initial target power of each energy storage power generation unit according to the sum of the demand adjustment amount and the real-time output power corresponding to each energy storage power generation unit. The corresponding calculation formula is:

[0120]

[0121] in, is the initial target power of each energy storage power generation unit, Output power to the energy storage power generation unit in real time. It is the demand adjustment amount of each energy storage power generation unit.

[0122] Furthermore, when the initial target power belongs to the target control interval, the server uses the initial target power as the target power of the energy storage power generation unit and sends it to the corresponding energy storage power generation unit. When the initial target power exceeds the target control interval, the power value with the smallest difference from the initial target power is determined from the target control interval, and the power value is used as the target power to ensure that the target power allocated to the energy storage power generation unit does not exceed the target control interval that is most suitable for it.

[0123] In this embodiment, in the process of determining the target power according to the demand adjustment amount, it is considered whether the sum of the demand adjustment amount and the output power of the current energy storage power generation unit will cause the output power of the energy storage power generation unit to exceed the target control interval after adjustment. If it exceeds the target control interval, the state of charge of the energy storage unit cannot be adapted, and the target power needs to be controlled within the target control interval to ensure that the best target power corresponding to the state of charge of the energy storage power generation unit can be determined and the parameters of other dimensions are also considered, thereby further improving the accuracy of the control of the energy storage power generation unit.

[0124] In an exemplary embodiment, step S206 determines the total regulation demand of the energy storage control area according to the real-time control interval, real-time output power and frequency regulation winning capacity of each energy storage power generation unit, including:

[0125] Determine the real-time output power of the energy storage control area based on the sum of the real-time output power of each energy storage power generation unit; determine the control interval of the energy storage control area based on the frequency regulation winning capacity and real-time control interval of each energy storage power generation unit; send the real-time output power and control interval of the energy storage control area to the conventional automatic power generation control system; obtain the control target of the energy storage control area; determine the total regulation demand of the energy storage control area based on the control target of the energy storage control area, the real-time output power of each energy storage power generation unit and the historical demand regulation.

[0126] Among them, the control target of the energy storage control area is determined by the conventional automatic power generation control system based on the real-time output power of the energy storage control area, the control range of the energy storage control area and the real-time operation status of the power grid.

[0127] Among them, the conventional automatic power generation control system can be a system that performs power grid frequency regulation control according to the control logic of controlling the hydropower generation units in the power grid.

[0128] The historical demand adjustment amount is the difference between the historical output power of the energy storage power generation unit and the historical control target of the energy storage power generation unit during the validity period of the last frequency control instruction. If the last frequency control instruction received by the energy storage power generation unit is no longer within the validity period, it is 0.

[0129] Among them, the frequency modulation control instruction can be an instruction with timeliness issued by the server to each energy storage power generation unit. The instruction can include the target power corresponding to the energy storage power generation unit, instructing the energy storage power generation unit to generate power according to the target power.

[0130] Optionally, the energy storage automatic power generation control system of the server determines the real-time output power of the energy storage control area according to the sum of the real-time output power of each energy storage power generation unit. The corresponding formula is:

[0131]

[0132] in, is the real-time output power of the energy storage control area, It is the real-time output power of each energy storage power generation unit.

[0133] Among them, the frequency modulation control instruction can be an instruction with timeliness issued by the server to each energy storage power generation unit. The instruction can include the target power corresponding to the energy storage power generation unit, instructing the energy storage power generation unit to generate power according to the target power.

[0134] The server determines the upper and lower limits of the control range of the energy storage control area based on the frequency regulation winning capacity and real-time control range of each energy storage power generation unit. The corresponding formula is:

[0135]

[0136]

[0137] in, is the upper limit of the control interval of the energy storage control area, is the lower limit of the control interval of the energy storage control area, The frequency regulation winning bid capacity for each energy storage power generation unit, is the upper limit of the real-time control range of each energy storage power generation unit, It is the lower limit of the real-time control range of each energy storage power generation unit.

[0138] The server sends the calculated real-time output power and control range of the energy storage control area to the conventional automatic power generation control system, which obtains the control target of the energy storage area according to the real-time output power and control range of the energy storage control area and the real-time operation status of the power grid in accordance with the conventional control logic.

[0139] Send the real-time output power and control interval of the energy storage control area to the conventional automatic power generation control system; obtain the control target of the energy storage control area; determine the total regulation demand of the energy storage control area based on the control target of the energy storage control area, the real-time output power of each energy storage power generation unit and the historical demand adjustment amount; the historical demand adjustment amount is the difference between the historical output power of the energy storage power generation unit and the historical control target of the energy storage power generation unit during the validity period of the last executed control instruction. The server receives the control target of the energy storage control area sent by the conventional automatic power generation control system, and determines the total regulation demand of the energy storage control area based on the control target of the energy storage control area, the real-time output power of each energy storage power generation unit and the historical demand adjustment amount. The corresponding formula is:

[0140]

[0141] in, is the control target of the energy storage control area, is the real-time output power of each energy storage power generation unit, The amount is adjusted for historical demand.

[0142] In this embodiment, the energy storage power generation units in the energy storage control area are aggregated to form energy storage equivalent power generation units, which are connected to the conventional automatic power generation control system and participate in grid regulation together with conventional hydropower and thermal power generation units. The energy storage equivalent power generation units can quickly respond to changes in grid demand, provide rapid regulation capabilities, and enhance the flexibility and response speed of the system. In addition, the energy storage automatic power generation control system and the conventional automatic power generation control system interact to jointly complete the frequency modulation control of the energy storage control area, taking into account the differences between the energy storage control area and the conventional area, thereby further improving the accuracy of the control of the energy storage control area.

[0143] In an exemplary embodiment, a method for energy storage participating in grid frequency regulation control considering SOC control is provided, comprising:

[0144] As shown in FIG4 , the method of this embodiment is applied to the following control architecture: each control area energy storage power generation unit is connected to an independent energy storage active automatic control system (energy storage automatic power generation control system), and the operation data of the energy storage power generation unit is sent to the energy storage power generation unit, and at the same time, the control target issued by the energy storage AGC is received and responded to; the energy storage AGC aggregates the control area energy storage equivalent power generation unit according to the control mode and real-time operation status of the subordinate energy storage power generation unit, and connects it to the conventional power supply automatic power generation control system (conventional automatic power generation control system); the conventional AGC adopts the same control logic as the hydropower and thermal power generation units to regulate each energy storage equivalent power generation unit to participate in grid regulation.

[0145] Among them, the energy storage automatic power generation control system is mainly composed of several modules such as energy storage equivalent power generation unit aggregation, regulation demand calculation, SOC maintenance control, simultaneous charging and discharging control, and regulation demand allocation.

[0146] Step 1, the calculation method of the operation information of the energy storage control area includes: online telesignal: "true" when the energy storage AGC application is operating normally, otherwise "false"; controllable telesignal: when the energy storage AGC is put into "coordinated control", the controllable telesignal is "true", otherwise "false"; real-time output: take the sum of the real-time output (real-time output power) of all independent energy storage power generation units in AUTOR mode. Upper control limit: calculated based on the bid capacity of all independent energy storage power stations in AUTOR mode and the measured maximum discharge power (upper output limit) sent in real time. Lower control limit: calculated based on the bid capacity of all independent energy storage power stations in AUTOR mode and the measured maximum charging power (lower output limit) sent in real time.

[0147] In step 2, after the energy storage power generation units in the energy storage control area are aggregated, they are modeled in the conventional AGC (conventional automatic power generation control system) in the form of power generation units and are regulated by the conventional AGC. After the conventional AGC obtains the operation information (real-time power generation and control range) of the energy storage control area in step 1 from the energy storage AGC, it calculates the control target of the energy storage control area according to the control logic of the conventional hydro-thermal power generation unit and sends it to the energy storage AGC; at the same time, according to the control target sending time and the output of the energy storage equivalent power generation unit, the timeliness of the control target is analyzed, and the control target validity flag is sent to the energy storage AGC.

[0148] Step 3: The energy storage AGC calculates the total regulation demand (total regulation demand) of the energy storage control area according to the control instructions issued by the energy storage AGC from the conventional AGC. If the control target valid flag issued by the conventional AGC is false, the total regulation demand of the control area is 0.

[0149] Step 4, correcting the control upper / lower limit of each energy storage power generation unit according to its real-time SOC, thereby affecting the calculation result of the control upper / lower limit of the energy storage control area in step 1, and ultimately helping the energy storage equivalent power generation unit to obtain control instructions that are conducive to energy storage SOC recovery during the conventional AGC regulation demand allocation process.

[0150] Optionally, the SOC deviation of the energy storage power generation unit is calculated first, then the SOC correction control upper / lower limit coefficient of the energy storage power generation unit is calculated, and finally the energy storage power generation unit control upper / lower limit calculation is calculated.

[0151] Step 5. According to the energy storage AGC composition shown in FIG4 , the total regulation demand of the energy storage AGC control area calculated in step 3 should be first allocated by the same-charge and same-discharge control module in FIG4 in the process of being allocated to each energy storage power generation unit, so as to avoid the existence of energy storage power generation units in both charging and discharging states in the same control area, thereby improving the economy of power grid operation. The specific operation steps are as follows: When the total regulation demand>0, the logic of the same-charge and same-discharge control module is as follows: If all energy storage power generation units are in the discharging state, there is no need to perform the same-charge and same-discharge control, and the regulation demand is directly allocated; the regulation demand is preferentially allocated to the energy storage power generation unit that is in the charging state and can respond to new instructions, until the initial control target of such PLC (energy storage power generation unit) is 0; if the regulation demand allocation is completed, or there is an energy storage power generation unit that is in the charging state and temporarily unable to respond to new instructions, then exit; the remaining regulation demand is allocated to the remaining PLCs, and the regulation amount of each energy storage power generation unit participating in the current cycle regulation should be made to meet the regional regulation demand allocation strategy as much as possible during the allocation process. When the total regulation demand is less than 0, the logic of the simultaneous charging and discharging control module is as follows: if all energy storage power generation units are in the charging state, there is no need to perform simultaneous charging and discharging control, and the regulation demand can be directly allocated; the regulation demand is preferentially allocated to the energy storage power generation units that are in the discharging state and can respond to new instructions, until the initial control target of such PLC is 0; if the regulation demand allocation is completed, or there are energy storage power generation units that are in the discharging state and temporarily unable to respond to new instructions, then exit; allocate the remaining regulation demand to the remaining PLCs, and during the allocation process, the regulation amount of each energy storage power generation unit participating in the current cycle regulation should be as much as possible to meet the regional regulation demand allocation strategy.

[0152] Among them, the judgment logic of the energy storage power generation unit that can respond to the new instruction is as follows:

[0153] If the control instruction currently executed by the energy storage power generation unit has not expired and the actual power of the energy storage power generation unit has not been adjusted to the control instruction, it is considered that the energy storage power generation unit cannot respond to the new instruction, otherwise it is considered that the energy storage power generation unit can respond to the new instruction.

[0154] Step 6: distribute the regulation demand according to the total regulation demand, and calculate the regulation amount of each energy storage power generation unit participating in the distribution when the regulation demand reg>0 or the regulation amount of each energy storage power generation unit participating in the distribution when the regulation demand reg<0.

[0155] Step 7, the logic of the instruction verification and issuing module is as follows: obtain the control upper / lower limit of each energy storage power generation unit from the SOC holding control module in step 3. Obtain the regulation demand allocated to each energy storage power generation unit from the simultaneous charging and discharging control module in step 5 or the regulation demand allocation module in claim 9, and calculate the initial control target (initial target power) of each energy storage power generation unit. Check whether the initial control target is within the control upper and lower limit range of the energy storage power generation unit. If not, adjust the initial control target to the control upper and lower limit range of the energy storage power generation unit, obtain the final control target (target power) of each energy storage power generation unit, and execute the control target issuance.

[0156] In this embodiment, in order to solve the safety and fairness problems of energy storage power generation units participating in the grid regulation process, a method for controlling energy storage participating in grid frequency regulation considering SOC control is proposed, which is compatible with the existing conventional AGC control and allocation logic in the form of energy storage equivalent power generation units, and at the same time introduces control and protection logic adapted to the characteristics of energy storage power generation units inside the energy storage AGC. Therefore, the proposed method for controlling energy storage participating in grid frequency regulation can effectively ensure that energy storage power generation units participate in grid regulation safely and fairly.

[0157] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0158] Based on the same inventive concept, the embodiment of the present application also provides an energy storage power automatic control device for implementing the energy storage power automatic control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more energy storage power automatic control device embodiments provided below can refer to the limitations of the energy storage power automatic control method above, and will not be repeated here.

[0159] In an exemplary embodiment, as shown in FIG5 , an energy storage power automatic control device 500 is provided, comprising: a data acquisition module 502 , a total adjustment amount determination module 504 , a sub-adjustment amount determination module 506 and a target power determination module 508 , wherein:

[0160] The data acquisition module 502 is used to obtain the real-time control range, real-time output power and frequency regulation winning capacity of each energy storage power generation unit in the energy storage control area of ​​the power grid.

[0161] The total regulation amount determination module 504 is used to determine the total regulation demand of the energy storage control area according to the real-time control interval, real-time output power and frequency regulation winning capacity of each energy storage power generation unit; the total regulation demand represents the power value to be adjusted in the energy storage control area.

[0162] The divided regulation amount determination module 506 is used to distribute the total regulation demand of the energy storage control area to each energy storage power generation unit to obtain the demand regulation amount corresponding to each energy storage power generation unit.

[0163] The target power determination module 508 is used to obtain the target power of each energy storage power generation unit according to the real-time output power, target control interval and demand adjustment amount of each energy storage power generation unit, and send each target power to the corresponding energy storage power generation unit.

[0164] Furthermore, in one embodiment, the target power determination module 508 is also used to obtain the real-time state of charge and the preset state of charge control target of each energy storage power generation unit; determine the state of charge deviation of the energy storage power generation unit according to the real-time state of charge and the preset state of charge control target; determine the control interval correction coefficient according to the state of charge deviation, the preset correction start value and the preset correction end value; determine the target control interval according to the control interval correction coefficient, the frequency modulation winning capacity of the energy storage power generation unit and the real-time control interval.

[0165] Furthermore, in one embodiment, the target power determination module 508 is also used to determine the adjustment order of each energy storage power generation unit according to the positive and negative conditions of the total adjustment demand and the charging and discharging conditions of each energy storage power generation unit; and send each target power of each energy storage power generation unit to the corresponding energy storage power generation unit according to the adjustment order.

[0166] Furthermore, in one embodiment, the target power determination module 508 is further used to, when the positive or negative condition of the total regulation demand is positive and the charge and discharge condition of at least one energy storage power generation unit is in the charging state, determine that the regulation order of the energy storage power generation unit in the charging state takes precedence over the energy storage power generation unit in the discharging state; when the positive or negative condition of the total regulation demand is negative and the charge and discharge condition of at least one energy storage power generation unit is in the discharging state, determine that the regulation order of the energy storage power generation unit in the discharging state takes precedence over the energy storage power generation unit in the charging state.

[0167] Furthermore, in one embodiment, the sub-adjustment amount determination module 506 is also used to determine the demand adjustment amount corresponding to each energy storage power generation unit according to the total adjustment demand, the control interval correction coefficient, and multiple parameters corresponding to each energy storage power generation unit when the total adjustment demand is positive; the multiple parameters include the upper limit of the control interval, the real-time output power, the real-time state of charge, the preset lower limit of the state of charge, and the rated power; when the total adjustment demand is negative, the demand adjustment amount corresponding to each energy storage power generation unit is determined according to the total adjustment demand, the control interval correction coefficient, and multiple parameters corresponding to each energy storage power generation unit; the multiple parameters include the lower limit of the control interval, the real-time output power, the real-time state of charge, the preset upper limit of the state of charge, and the rated power.

[0168] Furthermore, in one embodiment, the target power determination module 508 is also used to obtain the initial target power of each energy storage power generation unit according to the sum of the demand adjustment amount and the real-time output power corresponding to each energy storage power generation unit; when the initial target power belongs to the target control interval, the initial target power is used as the target power of the energy storage power generation unit; when the initial target power exceeds the target control interval, the power value with the smallest difference with the initial target power is determined from the target control interval, and the power value is used as the target power.

[0169] Furthermore, in one embodiment, the total regulation amount determination module 504 is also used to determine the real-time output power of the energy storage control area according to the sum of the real-time output power of each energy storage power generation unit; determine the control interval of the energy storage control area according to the frequency regulation winning capacity and the real-time control interval of each energy storage power generation unit; send the real-time output power and control interval of the energy storage control area to the conventional automatic power generation control system; obtain the control target of the energy storage control area; the control target of the energy storage control area is determined by the conventional automatic power generation control system based on the real-time output power of the energy storage control area, the control interval of the energy storage control area and the real-time operation status of the power grid; determine the total regulation demand of the energy storage control area according to the control target of the energy storage control area, the real-time output power of each energy storage power generation unit and the historical demand regulation amount; the historical demand regulation amount is the difference between the historical output power of the energy storage power generation unit and the historical control target of the energy storage power generation unit during the validity period of the previous frequency regulation control instruction.

[0170] Each module in the above energy storage power automatic control device 500 can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0171] In an exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be shown in FIG6. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the real-time control interval, real-time output power, frequency modulation winning capacity data of each energy storage power generation unit in the energy storage control area of ​​the power grid, and the calculated total regulation demand, demand regulation amount and target power registration data. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for automatic control of energy storage power is implemented.

[0172] Those skilled in the art will understand that the structure shown in FIG. 6 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0173] In one embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0174] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0175] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0176] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0177] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0178] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for automatic control of energy storage power, characterized in that: The method comprises: Obtain the real-time control range, real-time output power and frequency regulation winning capacity of each energy storage power generation unit in the energy storage control area of ​​the power grid; Determine the total regulation demand of the energy storage control area according to the real-time control interval, the real-time output power, and the frequency modulation winning capacity of each energy storage power generation unit; the total regulation demand represents the power value to be adjusted in the energy storage control area; Allocate the total regulation demand of the energy storage control area to each of the energy storage power generation units to obtain the demand regulation amount corresponding to each of the energy storage power generation units; According to the real-time output power, target control interval and demand adjustment amount of each energy storage power generation unit, the target power of each energy storage power generation unit is obtained, and each target power is sent to the corresponding energy storage power generation unit respectively.

2. The method according to claim 1, characterized in that: Before obtaining the target power of each energy storage power generation unit according to the real-time output power, target control interval and demand adjustment amount of each energy storage power generation unit, the method further includes: Obtaining the real-time state of charge and the preset state of charge control target of each of the energy storage and power generation units; Determining a state of charge deviation of the energy storage power generation unit according to the real-time state of charge and the preset state of charge control target; Determining a control interval correction coefficient according to the state of charge deviation, a preset correction start value, and a preset correction end value; A target control interval is determined according to the control interval correction coefficient, the frequency modulation winning capacity of the energy storage power generation unit and the real-time control interval.

3. The method according to claim 2, characterized in that The respectively sending each of the target powers to the corresponding energy storage power generation units includes: Determine the adjustment order of each energy storage and power generation unit according to the positive and negative conditions of the total adjustment demand and the charging and discharging conditions of each energy storage and power generation unit; The target powers of the energy storage and power generation units are respectively sent to the corresponding energy storage and power generation units according to the adjustment order.

4. The method according to claim 3, characterized in that The step of determining the adjustment order of each energy storage and power generation unit according to the positive and negative conditions of the total adjustment demand and the charging and discharging conditions of all the energy storage and power generation units includes: When the total regulation demand is positive and the charge / discharge condition of at least one of the energy storage and power generation units is in a charging state, the regulation order of the energy storage and power generation unit in the charging state is determined to be higher than that of the energy storage and power generation unit in the discharging state; When the positive or negative condition of the total regulation demand is negative and the charge and discharge condition of at least one of the energy storage and power generation units is in a discharge state, it is determined that the regulation order of the energy storage and power generation unit in the discharge state takes precedence over the energy storage and power generation unit in the charging state.

5. The method according to claim 3, characterized in that: The allocating the total regulation demand of the energy storage control area to each of the energy storage power generation units to obtain the demand regulation amount corresponding to each of the energy storage power generation units includes: When the total regulation demand is positive, the demand regulation amount corresponding to each energy storage power generation unit is determined according to the total regulation demand, the control interval correction coefficient, and the first parameter set corresponding to each energy storage power generation unit; the first parameter set includes the upper limit of the control interval, the real-time output power, the real-time state of charge, the preset lower limit of the state of charge and the rated power; When the total regulation demand is negative, the demand regulation amount corresponding to each energy storage power generation unit is determined according to the total regulation demand, the control interval correction coefficient, and the second parameter set corresponding to each energy storage power generation unit; the second parameter set includes the lower limit of the control interval, the real-time output power, the real-time state of charge, the preset upper limit of the state of charge and the rated power.

6. The method according to claim 3, characterized in that The step of obtaining the target power of each energy storage power generation unit according to the real-time output power, the target control interval and the demand adjustment amount of each energy storage power generation unit comprises: Obtaining the initial target power of each energy storage power generation unit according to the sum of the demand adjustment amount and the real-time output power corresponding to each energy storage power generation unit; When the initial target power belongs to the target control interval, using the initial target power as the target power of the energy storage power generation unit; In the case that the initial target power exceeds the target control interval, a power value having the smallest difference with the initial target power is determined from the target control interval, and the power value is used as the target power.

7. The method according to claim 1, characterized in that The determining of the total regulation demand of the energy storage control area according to the real-time control interval, the real-time output power and the frequency regulation winning capacity of each energy storage power generation unit includes: Determine the real-time output power of the energy storage control area according to the sum of the real-time output power of each of the energy storage power generation units; Determine the control interval of the energy storage control area according to the frequency modulation winning bid capacity and the real-time control interval of each energy storage power generation unit; Sending the real-time output power and the control interval of the energy storage control area to a conventional automatic power generation control system; Acquire a control target of the energy storage control area; the control target of the energy storage control area is determined by the conventional automatic power generation control system based on the real-time output power of the energy storage control area, the control interval of the energy storage control area and the real-time operation status of the power grid; The total regulation demand of the energy storage control area is determined according to the control target of the energy storage control area, the real-time output power of each of the energy storage power generation units and the historical demand adjustment amount; the historical demand adjustment amount is the difference between the historical output power of the energy storage power generation unit and the historical control target of the energy storage power generation unit during the validity period of the previous frequency regulation control instruction.

8. An automatic energy storage power control device, characterized in that: The device comprises: A data acquisition module is used to obtain the real-time control range, real-time output power and frequency modulation bid capacity of each energy storage power generation unit in the energy storage control area of ​​the power grid; A total regulation amount determination module is used to determine the total regulation demand of the energy storage control area according to the real-time control interval, the real-time output power and the frequency regulation winning capacity of each energy storage power generation unit; the total regulation demand represents the power value to be adjusted in the energy storage control area; A sub-regulation amount determination module is used to distribute the total regulation demand of the energy storage control area to each of the energy storage power generation units to obtain the demand regulation amount corresponding to each of the energy storage power generation units; The target power determination module is used to obtain the target power of each energy storage power generation unit according to the real-time output power, target control interval and demand adjustment amount of each energy storage power generation unit, and send each target power to the corresponding energy storage power generation unit.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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