A kind of automatic control method and control system of energy storage battery

Abstract

The present application relates to an automatic control method and control system for an energy storage battery, the method comprising: obtaining the output power and power curve of the new energy power supply terminal during the charging time period in response to the acquired environmental parameters; counting the required power of the energy storage battery and obtaining multiple energy storage battery units corresponding to the required power; obtaining the remaining power of each energy storage battery unit; in the initial stage of the charging time period, sequentially increasing the remaining power of each energy storage battery unit to a first threshold power, then sequentially increasing the remaining power of each energy storage battery unit to a second threshold power, and finally increasing the power of each energy storage battery unit to a third threshold power. The automatic control method and control system for the energy storage battery disclosed in the present application can realize the dynamic allocation of the power provided by the power generation side through dynamic analysis of the power generation side, the energy storage side and the power consumption side, so as to ensure the stable operation and economical operation of the power grid.

Description

Technical Field

[0001] The present application relates to the field of data processing technology, and in particular to an automatic control method and control system for an energy storage battery. Background Art

[0002] With the rise of my country's new energy industry, energy storage technology has attracted attention from all parties as an important support and auxiliary technology for new energy power generation. Green new energy such as photovoltaic power generation and wind power generation will have a great impact on the stable operation of the power grid due to their inherent randomness and indirectness, requiring the power grid to have stronger flexibility and adaptability to handle unstable power input, which means that we need to have the ability to respond quickly, efficiently transmit and effectively regulate electric energy.

[0003] The energy storage system can smooth out the power imbalance in the system and play a role in energy buffering. At the same time, the widespread application of energy storage technology will greatly enhance the grid's ability to accept large-scale renewable energy and promote the upgrade and transformation of traditional grids.

[0004] The main problems with current renewable energy power generation are unstable power generation resulting in unstable grid system voltage and mismatch between supply and demand on the power supply side and the demand side. This requires more accurate prediction and analysis of the power generation side and the power supply side to solve the problems of grid stability and supply and demand matching. Summary of the invention

[0005] The present application provides an automated control method and control system for an energy storage battery, which can realize dynamic allocation of the amount of electricity provided to the power generation side through dynamic analysis of the power generation side, energy storage side and power consumption side, so as to ensure the stable and economical operation of the power grid.

[0006] The above-mentioned purpose of the present application is achieved through the following technical solutions:

[0007] In a first aspect, the present application provides an automatic control method for an energy storage battery, comprising:

[0008] In response to the acquired environmental parameters, the output power and power curve of the new energy power supply terminal during the charging time period are obtained;

[0009] Counting the power demand of the energy storage battery and obtaining a plurality of energy storage battery units corresponding to the power demand;

[0010] Get the remaining power of each energy storage battery unit;

[0011] In the initial stage of the charging time period, the remaining power of each energy storage battery unit is sequentially increased to a first threshold power, then the remaining power of each energy storage battery unit is sequentially increased to a second threshold power, and finally the power of each energy storage battery unit is increased to a third threshold power;

[0012] When a temporary discharge demand is received, calling at least one energy storage battery unit whose remaining power is greater than a first threshold power and less than or equal to a third threshold power for discharge;

[0013] When a temporary charging demand is received, calling at least one energy storage battery unit whose remaining power is greater than or equal to a first threshold power and less than a second threshold power for charging;

[0014] The third threshold power level is greater than the second threshold power level which is greater than the first threshold power level.

[0015] In a possible implementation manner of the first aspect, the method further includes:

[0016] According to the temporary energy consumption estimation curve of the demand side, the remaining power of the energy storage battery unit is calculated at the corresponding time point to be the required amount of power of the second threshold value;

[0017] In the process of sequentially increasing the remaining power of each energy storage battery unit to the first threshold power, the remaining power of the energy storage battery unit whose remaining power has reached the first threshold power is increased to the second threshold power, and then the remaining power of the remaining energy storage battery units is increased to the first threshold power.

[0018] In a possible implementation of the first aspect, when a temporary discharge demand is received, suspending increasing the remaining power of an energy storage battery unit whose remaining power has reached a first threshold power to a second threshold power;

[0019] After the temporary discharge demand ends, the remaining power of the remaining energy storage battery units is increased to the first threshold power;

[0020] When a temporary charging demand is received, the remaining power of multiple energy storage battery units whose remaining power has reached the first threshold power are increased to the second threshold power at the same time.

[0021] In a possible implementation of the first aspect, when the remaining power of the energy storage battery unit is at a second threshold power amount that is greater than the demand amount corresponding to the power consumption estimation curve at the corresponding time point, the excess output power is coordinated to the power grid.

[0022] In a possible implementation manner of the first aspect, when a temporary charging demand is received, the method further includes:

[0023] Obtain the fluctuating voltage curve of the charging input line;

[0024] A primary adjustment voltage curve is generated based on the fluctuating voltage curve. The primary adjustment voltage curve is located below the fluctuating voltage curve. In a unit time length, the number of intersection points between the primary adjustment voltage curve and the fluctuating voltage curve is less than or equal to the allowed number of intersection points.

[0025] Coordinate the portion of the fluctuating voltage curve below the primary adjustment voltage curve to the power grid;

[0026] The portion of the fluctuating voltage curve that is above the primary adjustment voltage curve is stored in the energy storage battery unit.

[0027] In a possible implementation manner of the first aspect, the method further includes:

[0028] generating a secondary adjustment voltage curve based on the grid voltage;

[0029] Determine the difference between the secondary adjustment voltage curve and the primary adjustment voltage curve;

[0030] At least one energy storage battery unit is selected according to the difference to output to the grid, so that the output voltage curve of the energy storage battery matches the voltage curve of the grid.

[0031] In a possible implementation manner of the first aspect, generating a primary adjustment voltage curve based on the fluctuating voltage curve includes:

[0032] The obtained fluctuating voltage curve is equally divided to obtain fluctuating voltage curve segments, and the time lengths of the fluctuating voltage curve segments are the same;

[0033] Sequentially obtain the lowest points of multiple fluctuating voltage curve segments in time series and use the lowest points to fit and adjust the voltage curve once;

[0034] When the fluctuating voltage curve segment and the fitted primary adjustment voltage curve intersect, the total area of ​​the downward exploration region of the fluctuating voltage curve segment corresponding to the intersection is determined, and when the total area of ​​the downward exploration region is greater than the allowable value, dynamic voltage compensation is performed;

[0035] The total area of ​​the down-exploration zone is twice the area of ​​the down-exploration zone.

[0036] In a second aspect, the present application provides an automatic control device for an energy storage battery, comprising:

[0037] A first calculation unit is used to obtain the output power and power curve of the new energy power supply terminal during the charging time period in response to the acquired environmental parameters;

[0038] A second calculation unit is used to count the power demand of the energy storage battery and obtain a plurality of energy storage battery units corresponding to the power demand;

[0039] A statistical unit, used to obtain the remaining power of each energy storage battery unit;

[0040] A charging unit, used to sequentially increase the remaining power of each energy storage battery unit to a first threshold power level in the initial stage of the charging time period, then sequentially increase the remaining power of each energy storage battery unit to a second threshold power level, and finally increase the power of each energy storage battery unit to a third threshold power level;

[0041] A first control unit is used to call at least one energy storage battery unit whose remaining power is greater than a first threshold power and less than or equal to a third threshold power for discharge when a temporary discharge demand is received;

[0042] A second control unit is used to call at least one energy storage battery unit whose remaining power is greater than or equal to a first threshold power and less than a second threshold power for charging when a temporary charging demand is received;

[0043] The third threshold power level is greater than the second threshold power level which is greater than the first threshold power level.

[0044] In a third aspect, the present application provides an automatic control system for an energy storage battery, the system comprising:

[0045] one or more memories for storing instructions; and

[0046] One or more processors, used to call and run the instructions from the memory to execute the method as described in the first aspect and any possible implementation of the first aspect.

[0047] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium comprises:

[0048] Program, when the program is executed by a processor, the method described in the first aspect and any possible implementation of the first aspect is executed.

[0049] In a fifth aspect, the present application provides a computer program product, comprising program instructions. When the program instructions are executed by a computing device, the method described in the first aspect and any possible implementation of the first aspect is executed.

[0050] In a sixth aspect, the present application provides a chip system, which includes a processor for implementing the functions involved in the above aspects, for example, generating, receiving, sending, or processing the data and / or information involved in the above methods.

[0051] The chip system may be composed of chips, or may include chips and other discrete devices.

[0052] In a possible design, the chip system also includes a memory, which is used to store necessary program instructions and data. The processor and the memory can be decoupled and respectively set on different devices, connected by wired or wireless means, or the processor and the memory can also be coupled on the same device. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic block diagram of the steps of an automated control method provided in this application.

[0054] Figure 2 It is a schematic diagram of a power curve provided by this application.

[0055] Figure 3 This is a schematic diagram of the change in the remaining power of an energy storage battery unit during charging provided by the present application.

[0056] Figure 4 The present application provides a schematic diagram of the required quantity when the remaining power is a second threshold power based on a temporary energy consumption estimation curve.

[0057] Figure 5 It is a schematic diagram of a fluctuating voltage curve and a primary adjustment voltage curve provided by the present application.

[0058] Figure 6 It is a schematic diagram of a primary adjustment voltage curve and a secondary adjustment voltage curve provided by the present application. DETAILED DESCRIPTION

[0059] In order to more clearly understand the technical solution in this application, the relevant technology is first introduced.

[0060] With the rapid development of artificial intelligence, electric vehicles, renewable energy, big data computing and advanced energy storage technology, the demand for electricity will increase, which will place demands on the power supply network from two aspects, namely stability and economy. Green new energy such as photovoltaic power generation and wind power generation will have a great impact on the stable operation of the power grid due to their inherent randomness and indirectness, and will directly affect the stability of the power supply network. However, green new energy has more advantages in power generation prices, and the cost price per kilowatt-hour has a downward trend lower than the cost price per kilowatt-hour of thermal power.

[0061] The technical solution in this application is further described in detail below in conjunction with the accompanying drawings.

[0062] This application discloses an automatic control method for energy storage batteries. Figure 1 In some examples, the automatic control method of the energy storage battery disclosed in the present application includes the following steps:

[0063] S101, in response to the acquired environmental parameters, obtaining an output power and a power curve of a new energy power supply terminal during a charging period;

[0064] S102, counting the power demand of the energy storage battery and obtaining a plurality of energy storage battery units corresponding to the power demand;

[0065] S103, obtaining the remaining power of each energy storage battery unit;

[0066] S104, in the initial stage of the charging time period, sequentially increasing the remaining power of each energy storage battery unit to a first threshold power, then sequentially increasing the remaining power of each energy storage battery unit to a second threshold power, and finally increasing the power of each energy storage battery unit to a third threshold power;

[0067] S105, when a temporary discharge demand is received, calling at least one energy storage battery unit whose remaining power is greater than a first threshold power and less than or equal to a third threshold power for discharge;

[0068] S106, when a temporary charging demand is received, calling at least one energy storage battery unit whose remaining power is greater than or equal to a first threshold power and less than a second threshold power for charging;

[0069] The third threshold power level is greater than the second threshold power level which is greater than the first threshold power level.

[0070] The technical solution in this application uses energy storage batteries to dynamically allocate the electric energy generated by the new energy power supply end. The specific implementation of the technical solution in this application is the control end of the energy storage battery, or the control end of the energy storage power station. For the convenience of description, they are collectively referred to as the control end below.

[0071] In step S101, in response to the acquired environmental parameters, the output power and power curve of the new energy power supply terminal during the charging time period need to be obtained. The charging time period here needs to refer to the power curve. Figure 2 As shown, the environmental parameters obtained are the environmental parameters of the environment where the new energy power supply end is located.

[0072] For example, if the new energy power supply end served by the control end is a solar power station, then the environmental parameters obtained at this time are the environmental parameters at the location of the solar power station, and the environmental parameters directly affect the power generation of the solar power station.

[0073] After obtaining the environmental parameters, the environmental parameters will be input into the prediction model, and then the prediction model will give the output power of the renewable energy power supply end during the charging period. The output power here is a prediction value. Different prediction values ​​will be obtained for different environmental parameters.

[0074] The function of the power curve is to determine the start and end time of charging.

[0075] In step S102, the power demand of the energy storage battery is counted and multiple energy storage battery units corresponding to the power demand are obtained. The power demand of the energy storage battery refers to the total amount of electric energy that can be stored in the energy storage battery. The total amount of electric energy that can be stored corresponds to multiple energy storage battery units at the same time.

[0076] It should be understood that the energy storage battery is composed of multiple energy storage battery units. The remaining power of these energy storage battery units varies during use, so it is necessary to re-count in each charging time period. In step S103, the remaining power of each energy storage battery unit is obtained, and the purpose of obtaining the remaining power is to plan the subsequent charging plan.

[0077] The content of step S104 is a specific charging plan, which specifically includes: in the initial stage of the charging time period, the remaining power of each energy storage battery unit is sequentially increased to a first threshold power, then the remaining power of each energy storage battery unit is sequentially increased to a second threshold power, and finally the power of each energy storage battery unit is increased to a third threshold power. At this time, the remaining power of the energy storage battery unit is as follows: Figure 3 shown.

[0078] This part divides the power of the energy storage battery unit. The three set parameters are the first threshold power, the second threshold power and the third threshold power. The relationship between them is that the third threshold power is greater than the second threshold power and greater than the first threshold power.

[0079] It should be understood that for the energy storage battery unit, the charging process can be divided into two stages: fast charging and slow charging. Among them, the two intervals from zero power to the first threshold power and from the second threshold power to the third threshold power belong to the slow charging stage, while the interval from the first threshold power to the second threshold power belongs to the fast charging stage.

[0080] Here, taking a solar power station as an example, at the beginning (when the sun starts to rise) and the end (when the sun starts to set) of the charging time period, the output power at this time will be significantly less than the output power in the middle of the charging time period. The small current at the beginning and end (compared with the large current in the middle) can be used to charge the energy storage battery unit at the beginning and end of the charging process.

[0081] The interval between the first threshold power and the second threshold power (belonging to the fast charging stage) can be used to cope with a larger output power, or participate in the dynamic adjustment process of the power grid to reduce peak power and fill valley power.

[0082] Of course, the charging process described in the above content will also face temporary charging and discharging demands. Temporary charging demands may be required to accommodate excess electricity in the power grid, or a temporary increase in output power at the renewable energy power supply end, or output adjustments at other renewable energy power supply ends; discharging demands are required to fill the power gap.

[0083] When a temporary discharge demand is received, step S105 is executed. In this step, at least one energy storage battery unit whose remaining power is greater than the first threshold power and less than or equal to the third threshold power is called for discharge. The output power at this time is the sum of the power when the remaining power in the multiple energy storage battery units drops to the first threshold power.

[0084] When a temporary charging demand is received, step S106 is executed. In this step, at least one energy storage battery cell whose remaining power is greater than or equal to the first threshold power and less than the second threshold power is called for charging. Because at this stage, the energy storage battery cell can provide a fast charging function and can cope with high power input. The charging amount at this time is the sum of the power of multiple energy storage battery cells when the remaining power rises to the second threshold power.

[0085] In some examples, the following is added:

[0086] S201, calculating the required amount of energy storage battery units for remaining power equal to a second threshold power at a corresponding time point according to a temporary energy consumption estimation curve at the demand side;

[0087] S202, in the process of sequentially increasing the remaining power of each energy storage battery unit to the first threshold power, the remaining power of the energy storage battery unit whose remaining power has reached the first threshold power is increased to the second threshold power, and then the remaining power of the remaining energy storage battery units is increased to the first threshold power.

[0088] In step S201 and step S202, the main problem to be solved is the dynamic response problem on the demand side. According to the above content, the output power of the new energy power supply end can be obtained by calculation, but for the demand side, only an approximate range can be obtained by fuzzy calculation.

[0089] As renewable energy power generation accounts for an increasing proportion of the power grid, the stability of the power grid is also decreasing, because the power of renewable energy power generation is unstable, while thermal power and nuclear power can maintain a constant power output. At this time, it is necessary to improve the dynamic response capability to the demand side.

[0090] The solution used in this application is based on the temporary energy consumption estimation curve on the demand side. The temporary energy consumption estimation curve refers to the energy consumption that may suddenly increase in addition to the stable supply of the power grid. Of course, it can also be the storage power reserved to ensure the stability of the power grid to cope with emergencies. The remaining power of the energy storage battery unit at the corresponding time point is calculated as the required amount of the second threshold power, such as Figure 4 As shown, the charging method in step S104 is then adjusted, and the specific content is in step S202.

[0091] At this time, it is equivalent to raising the remaining power of the energy storage battery unit to the second threshold power in advance. At this time, the energy storage battery unit has both sufficient electrical energy and high-power output capability to cope with dynamic demand changes on the demand side.

[0092] Of course, at this time, the situation may occur that the remaining power of the energy storage battery unit is at the second threshold power level, which is greater than the demand quantity corresponding to the power consumption estimation curve at the corresponding time point. Because temporary charging needs may still be needed, the excess output power will be coordinated to the power grid at this time.

[0093] In some examples, when a temporary discharge demand is received, the remaining power of the energy storage battery unit whose remaining power has reached the first threshold power is temporarily increased to the second threshold power; after the temporary discharge demand ends, the remaining power of the remaining energy storage battery units is increased to the first threshold power;

[0094] In other examples, when a temporary charging demand is received, the remaining charges of multiple energy storage battery cells whose remaining charges have reached a first threshold charge are simultaneously increased to a second threshold charge.

[0095] In some examples, when a temporary charging request is received, it is processed as follows:

[0096] S301, obtaining a fluctuating voltage curve of a charging input circuit;

[0097] S302, generating a primary adjustment voltage curve based on the fluctuating voltage curve, wherein the primary adjustment voltage curve is located below the fluctuating voltage curve, and the number of intersection points between the primary adjustment voltage curve and the fluctuating voltage curve per unit time length is less than or equal to the allowed number of intersection points;

[0098] S303, coordinating the portion of the fluctuating voltage curve below the primary adjustment voltage curve to the power grid;

[0099] S304, storing the portion of the fluctuating voltage curve above the primary adjustment voltage curve in the energy storage battery unit.

[0100] The contents of step S301 to step S304 are mainly to deal with temporary charging demand with input voltage fluctuation. The voltage of such demand is unstable. Figure 5 , and it will also disrupt the later rhythm of electricity storage and release.

[0101] In order to solve this problem, the present application uses a primary adjustment voltage curve generated based on the fluctuating voltage curve to solve it. The specific method is to coordinate the part of the fluctuating voltage curve below the primary adjustment voltage curve to the power grid, and store the part of the fluctuating voltage curve above the primary adjustment voltage curve into the energy storage battery unit.

[0102] At this time, the input of the charging input line can be divided into two parts, namely a stable part and an unstable part. The stable part is given to the power grid, and the unstable part is given to the energy storage battery unit.

[0103] At this time, the stable part may have insufficient voltage. Use the following method to deal with it:

[0104] S401, generating a secondary adjustment voltage curve based on the grid voltage ( Figure 6 shown);

[0105] S402, determining a difference between a secondary adjustment voltage curve and a primary adjustment voltage curve;

[0106] S403, selecting at least one energy storage battery unit to output to the grid according to the difference, so that the output voltage curve of the energy storage battery matches the voltage curve of the grid.

[0107] In the contents of step S401 to step S403, at least one energy storage battery unit is used in time to supplement the voltage so that the output voltage curve of the energy storage battery matches the grid voltage curve. The function of the secondary adjustment voltage curve is to reduce the grid voltage fluctuation. It should be understood that the grid voltage is in a fluctuating state. If the grid voltage is analyzed point by point at this time, it will inevitably bring a huge amount of calculation.

[0108] In order to solve this problem, the present application uses a secondary adjustment voltage curve. The process of obtaining the secondary adjustment voltage curve is to determine the fluctuation range of the grid voltage and then generate a smooth curve within the fluctuation range.

[0109] In the above process, the specific method of generating an adjustment voltage curve based on the fluctuating voltage curve is as follows:

[0110] S501, dividing the obtained fluctuating voltage curve into equal parts to obtain fluctuating voltage curve segments, wherein the fluctuating voltage curve segments have the same time length;

[0111] S502, sequentially obtaining the lowest points of multiple fluctuating voltage curve segments in time series and fitting an adjusted voltage curve using the lowest points;

[0112] When the fluctuating voltage curve segment and the fitted primary adjustment voltage curve intersect, the total area of ​​the downward exploration region of the fluctuating voltage curve segment corresponding to the intersection is determined, and when the total area of ​​the downward exploration region is greater than the allowable value, dynamic voltage compensation is performed;

[0113] The total area of ​​the down-exploration zone is twice the area of ​​the down-exploration zone.

[0114] In step S501 and step S502, the obtained fluctuating voltage curve is first divided into equal parts based on time, and the time length of each fluctuating voltage curve segment is the same. Then, the lowest points of multiple fluctuating voltage curve segments are obtained in sequence on the time series and the voltage curve is adjusted once by fitting the lowest points.

[0115] It should be noted that the obtained primary adjustment voltage curve is a sine line (the phase may shift), but there will be an intersection between the fluctuating voltage curve segment and the fitted primary adjustment voltage curve, because the amplitude of the fluctuating voltage curve is uncertain during the fitting process.

[0116] At this time, it will cause a local abnormality in the primary adjustment voltage curve, because the stable part of the power grid will be insufficient and needs to be adjusted. The specific way of adjustment is:

[0117] Determine the total area of ​​the downward exploration area of ​​the fluctuating voltage curve segment corresponding to the intersection point. When the total area of ​​the downward exploration area is greater than the allowable value, dynamic voltage compensation is performed, and at the same time, the total area of ​​the downward exploration area is limited to twice the area of ​​the downward exploration area.

[0118] That is, when the fluctuating voltage curve segment intersects with the fitted single-adjustment voltage curve, the total area of ​​the downward exploration region will be calculated synchronously. However, the total area of ​​the downward exploration region can only be obtained when the number of intersections is two. At this time, dynamic voltage compensation is obviously problematic. Therefore, the present application adopts a calculation plus prediction method to solve the problem.

[0119] As for the compensation value of dynamic voltage compensation, it is based on the area of ​​the downward detection area, which is generally 1-1.1 times the area of ​​the downward detection area.

[0120] The present application also provides an automatic control device for an energy storage battery, comprising:

[0121] A first calculation unit is used to obtain the output power and power curve of the new energy power supply terminal during the charging time period in response to the acquired environmental parameters;

[0122] A second calculation unit is used to count the power demand of the energy storage battery and obtain a plurality of energy storage battery units corresponding to the power demand;

[0123] A statistical unit, used to obtain the remaining power of each energy storage battery unit;

[0124] A charging unit, used to sequentially increase the remaining power of each energy storage battery unit to a first threshold power level in the initial stage of the charging time period, then sequentially increase the remaining power of each energy storage battery unit to a second threshold power level, and finally increase the power of each energy storage battery unit to a third threshold power level;

[0125] A first control unit is used to call at least one energy storage battery unit whose remaining power is greater than a first threshold power and less than or equal to a third threshold power for discharge when a temporary discharge demand is received;

[0126] A second control unit is used to call at least one energy storage battery unit whose remaining power is greater than or equal to a first threshold power and less than a second threshold power for charging when a temporary charging demand is received;

[0127] The third threshold power level is greater than the second threshold power level which is greater than the first threshold power level.

[0128] Furthermore, it also includes:

[0129] A third calculation unit is used to calculate the required amount of energy storage battery units for the remaining power to be equal to the second threshold power at a corresponding time point according to the temporary energy consumption estimation curve of the demand side;

[0130] The third control unit is used to increase the remaining power of the energy storage battery cell whose remaining power has reached the first threshold power to the second threshold power, and then increase the remaining power of the remaining energy storage battery cells to the first threshold power in the process of sequentially increasing the remaining power of each energy storage battery cell to the first threshold power.

[0131] Further, when a temporary discharge demand is received, the remaining power of the energy storage battery unit whose remaining power has reached the first threshold power is temporarily increased to the second threshold power;

[0132] After the temporary discharge demand ends, the remaining power of the remaining energy storage battery units is increased to the first threshold power;

[0133] When a temporary charging demand is received, the remaining power of multiple energy storage battery units whose remaining power has reached the first threshold power are increased to the second threshold power at the same time.

[0134] Furthermore, when the remaining power of the energy storage battery unit is at a second threshold power amount that is greater than the demand amount corresponding to the power consumption estimation curve at the corresponding time point, the excess output power is coordinated to the power grid.

[0135] Furthermore, it also includes:

[0136] An acquisition unit, used for acquiring a fluctuation voltage curve of a charging input line;

[0137] a fourth calculation unit, configured to generate a primary adjustment voltage curve based on the fluctuating voltage curve, wherein the primary adjustment voltage curve is located below the fluctuating voltage curve, and the number of intersection points between the primary adjustment voltage curve and the fluctuating voltage curve per unit time length is less than or equal to the allowed number of intersection points;

[0138] A first coordination unit is used to coordinate the portion of the fluctuating voltage curve below the primary adjustment voltage curve to the power grid;

[0139] The second coordination unit is used to store the portion of the fluctuating voltage curve above the primary adjustment voltage curve into the energy storage battery unit.

[0140] Furthermore, it also includes:

[0141] A first processing unit, configured to generate a secondary adjustment voltage curve based on a grid voltage;

[0142] A second processing unit, used for determining a difference between the secondary adjustment voltage curve and the primary adjustment voltage curve;

[0143] The output unit is used to select at least one energy storage battery unit to output to the power grid according to the difference, so that the output voltage curve of the energy storage battery is consistent with the voltage curve of the power grid.

[0144] Furthermore, it also includes:

[0145] A third processing unit is used to divide the acquired fluctuating voltage curve into equal parts to obtain fluctuating voltage curve segments, wherein the fluctuating voltage curve segments have the same time length;

[0146] A fourth processing unit is used to sequentially obtain the lowest points of multiple fluctuating voltage curve segments in time series and use the lowest points to fit the voltage curve once;

[0147] When the fluctuating voltage curve segment and the fitted primary adjustment voltage curve intersect, the total area of ​​the downward exploration region of the fluctuating voltage curve segment corresponding to the intersection is determined, and when the total area of ​​the downward exploration region is greater than the allowable value, dynamic voltage compensation is performed;

[0148] The total area of ​​the down-exploration zone is twice the area of ​​the down-exploration zone.

[0149] In one example, the unit in any of the above devices can be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASICs), or, one or more digital signal processors (DSPs), or, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.

[0150] For another example, when the units in the device can be implemented in the form of a processing element scheduling program, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call a program. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0151] Various objects such as various messages / information / equipment / network elements / systems / devices / actions / operations / processes / concepts that may appear in this application are named. It can be understood that these specific names do not constitute a limitation on the relevant objects. The names assigned may change with factors such as scenarios, contexts or usage habits. The understanding of the technical meaning of the technical terms in this application should be mainly determined from the functions and technical effects embodied / executed in the technical scheme.

[0152] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0153] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0154] 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 units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0155] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0156] It should also be understood that in various embodiments of the present application, the first, second, etc. are only used to indicate that multiple objects are different. For example, the first time window and the second time window are only used to indicate different time windows. They should not have any impact on the time window itself, and the first, second, etc. mentioned above should not impose any limitations on the embodiments of the present application.

[0157] It should also be understood that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0158] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a computer-readable storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned computer-readable storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0159] The present application also provides an automatic control system for an energy storage battery, the system comprising:

[0160] one or more memories for storing instructions; and

[0161] One or more processors are used to call and run the instructions from the memory to execute the method as described above.

[0162] The present application also provides a computer program product, which includes instructions. When the instructions are executed, the automation control system performs operations of the automation control system corresponding to the above method.

[0163] The present application also provides a chip system, which includes a processor for implementing the functions involved in the above content, such as generating, receiving, sending, or processing the data and / or information involved in the above method.

[0164] The chip system may be composed of chips, or may include chips and other discrete devices.

[0165] The processor mentioned in any of the above places can be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for executing programs for controlling the above-mentioned feedback information transmission method.

[0166] In a possible design, the chip system also includes a memory, which is used to store necessary program instructions and data. The processor and the memory can be decoupled and respectively set on different devices, connected by wire or wireless means to support the chip system to implement various functions in the above embodiments. Alternatively, the processor and the memory can also be coupled on the same device.

[0167] Optionally, the computer instructions are stored in a memory.

[0168] Optionally, the memory is a storage unit within the chip, such as a register, a cache, etc. The memory can also be a storage unit within the terminal located outside the chip, such as a ROM or other types of static storage devices that can store static information and instructions, RAM, etc.

[0169] It can be understood that the memory in the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories.

[0170] The non-volatile memory may be a ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory.

[0171] The volatile memory may be a RAM, which is used as an external cache. There are many different types of RAM, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct memory bus RAM.

[0172] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic control method for an energy storage battery, characterized in that: include: In response to the acquired environmental parameters, the output power and power curve of the new energy power supply terminal during the charging time period are obtained; Counting the power demand of the energy storage battery and obtaining a plurality of energy storage battery units corresponding to the power demand; Get the remaining power of each energy storage battery unit; In the initial stage of the charging time period, the remaining power of each energy storage battery unit is sequentially increased to a first threshold power, then the remaining power of each energy storage battery unit is sequentially increased to a second threshold power, and finally the power of each energy storage battery unit is increased to a third threshold power; When a temporary discharge demand is received, calling at least one energy storage battery unit whose remaining power is greater than a first threshold power and less than or equal to a third threshold power for discharge; When a temporary charging demand is received, calling at least one energy storage battery unit whose remaining power is greater than or equal to a first threshold power and less than a second threshold power for charging; Wherein, the third threshold power level is greater than the second threshold power level and greater than the first threshold power level; When receiving a temporary charging request, it also includes: Obtain the fluctuating voltage curve of the charging input line; A primary adjustment voltage curve is generated based on the fluctuating voltage curve. The primary adjustment voltage curve is located below the fluctuating voltage curve. In a unit time length, the number of intersection points between the primary adjustment voltage curve and the fluctuating voltage curve is less than or equal to the allowed number of intersection points. Coordinate the portion of the fluctuating voltage curve below the primary adjustment voltage curve to the power grid; The portion of the fluctuating voltage curve that is above the primary adjustment voltage curve is stored in the energy storage battery unit.

2. The automatic control method of the energy storage battery according to claim 1, characterized in that: Also includes: According to the temporary energy consumption estimation curve of the demand side, the remaining power of the energy storage battery unit is calculated at the corresponding time point to be the required amount of power of the second threshold value; In the process of sequentially increasing the remaining power of each energy storage battery unit to the first threshold power, the remaining power of the energy storage battery unit whose remaining power has reached the first threshold power is increased to the second threshold power, and then the remaining power of the remaining energy storage battery units is increased to the first threshold power.

3. The automatic control method of the energy storage battery according to claim 2, characterized in that: When a temporary discharge demand is received, suspending the increase of the remaining power of the energy storage battery unit whose remaining power has reached the first threshold power to the second threshold power; After the temporary discharge demand ends, the remaining power of the remaining energy storage battery units is increased to the first threshold power; When a temporary charging demand is received, the remaining power of multiple energy storage battery units whose remaining power has reached the first threshold power are increased to the second threshold power at the same time.

4. The automatic control method of the energy storage battery according to claim 3, characterized in that: When the remaining power of the energy storage battery unit is at a second threshold power level and is greater than the demand corresponding to the power consumption estimation curve at the corresponding time point, the excess output power is coordinated to the power grid.

5. The automatic control method of the energy storage battery according to claim 4, characterized in that: Also includes: generating a secondary adjustment voltage curve based on the grid voltage; Determine the difference between the secondary adjustment voltage curve and the primary adjustment voltage curve; At least one energy storage battery unit is selected according to the difference to output to the grid, so that the output voltage curve of the energy storage battery matches the voltage curve of the grid.

6. The automatic control method of the energy storage battery according to claim 4, characterized in that: Generating a primary adjustment voltage curve based on the fluctuating voltage curve includes: The obtained fluctuating voltage curve is equally divided to obtain fluctuating voltage curve segments, and the time lengths of the fluctuating voltage curve segments are the same; Sequentially obtain the lowest points of multiple fluctuating voltage curve segments in time series and use the lowest points to fit and adjust the voltage curve once; When the fluctuating voltage curve segment and the fitted primary adjustment voltage curve intersect, the total area of ​​the downward exploration region of the fluctuating voltage curve segment corresponding to the intersection is determined, and when the total area of ​​the downward exploration region is greater than the allowable value, dynamic voltage compensation is performed; The total area of ​​the down-exploration zone is twice the area of ​​the down-exploration zone.

7. An automatic control device for an energy storage battery, executing the method according to any one of claims 1 to 6, characterized in that: include: A first calculation unit is used to obtain the output power and power curve of the new energy power supply terminal during the charging time period in response to the acquired environmental parameters; A second calculation unit is used to count the power demand of the energy storage battery and obtain a plurality of energy storage battery units corresponding to the power demand; A statistical unit, used to obtain the remaining power of each energy storage battery unit; A charging unit, used to sequentially increase the remaining power of each energy storage battery unit to a first threshold power level in the initial stage of the charging time period, then sequentially increase the remaining power of each energy storage battery unit to a second threshold power level, and finally increase the power of each energy storage battery unit to a third threshold power level; A first control unit is used to call at least one energy storage battery unit whose remaining power is greater than a first threshold power and less than or equal to a third threshold power for discharge when a temporary discharge demand is received; A second control unit is used to call at least one energy storage battery unit whose remaining power is greater than or equal to a first threshold power and less than a second threshold power for charging when a temporary charging demand is received; The third threshold power level is greater than the second threshold power level which is greater than the first threshold power level.

8. An automatic control system for energy storage batteries, characterized in that: The system comprises: one or more memories for storing instructions; and One or more processors, configured to call and execute the instructions from the memory to perform the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The computer readable storage medium comprises: The program, when the program is executed by a processor, the method according to any one of claims 1 to 6 is executed.

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