CN115833202A - Charging and discharging control method and device for energy storage device, electronic equipment and storage medium - Google Patents
Charging and discharging control method and device for energy storage device, electronic equipment and storage medium Download PDFInfo
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Abstract
The application discloses a charge and discharge control method and device of an energy storage device, electronic equipment and a storage medium, wherein the energy storage device is electrically connected with a transformer, and the charge and discharge control method of the energy storage device comprises the following steps: determining a target operation mode of the energy storage device based on the current time period of the energy storage device; acquiring a first active power of the energy storage device, a second active power of the transformer and a current state of charge of the energy storage device; and determining a target operation parameter of the energy storage device in the target operation mode based on the first active power, the second active power and the current state of charge of the energy storage device so as to control charging and discharging of the energy storage device. The technical problem that the operation cost of an electric power system is high when an energy storage device performs peak clipping and valley filling is solved.
Description
Technical Field
The present disclosure relates to the field of power energy storage technologies, and in particular, to a method and an apparatus for controlling charging and discharging of an energy storage device, an electronic device, and a readable storage medium.
Background
With the continuous development of new energy industry, the traditional power system is gradually transformed to a novel power system with more obvious intermittent and fluctuating characteristics, and meanwhile, an energy storage device applied to the novel power system is more and more widely applied by virtue of the characteristics of being chargeable and dischargeable, having quick response and the like.
In a novel power system, the energy storage device installed at the electricity consumption end of a factory, a commercial building, a residential quarter and the like is controlled to operate in a peak clipping and valley filling mode, for example, the energy storage device is charged in a low electricity consumption valley period (when the electricity price is low), and is discharged in a high electricity consumption peak period (when the electricity price is high), so that the time shift of electric energy is realized, meanwhile, the peak-valley difference of the electricity consumption load can be relieved, the electricity consumption load curve is smoothed, and the electricity cost expenditure is saved for a user. When the energy storage device operates in peak clipping and valley filling, the charge and discharge power in different periods of time needs to be set.
At present, when an energy storage device operates in a peak clipping and valley filling mode within a certain fixed time period, charging and discharging power needs to be set in advance, however, because the power load of a power consumption end is changed constantly, the power consumption power of a power system is uncontrollable, the problems of overload of a power consumption end transformer or electric energy countercurrent of the energy storage device and the like easily occur, and the electric energy of the power system cannot be effectively utilized. Therefore, the operating cost of the power system is high when the current energy storage device is operated in peak load shifting.
Disclosure of Invention
The present application mainly aims to provide a charge and discharge control method and device for an energy storage device, an electronic device, and a readable storage medium, and aims to solve the technical problem in the prior art that the operation cost of an electric power system is high when the energy storage device performs peak clipping and valley filling operations.
In order to achieve the above object, the present application provides a charge and discharge control method for an energy storage device, the energy storage device being electrically connected to a transformer, the charge and discharge control method for the energy storage device comprising:
determining a target operation mode of the energy storage device based on the current time period of the energy storage device;
acquiring a first active power of the energy storage device, a second active power of the transformer and a current state of charge of the energy storage device;
and determining a target operation parameter of the energy storage device in the target operation mode based on the first active power, the second active power and the current state of charge of the energy storage device so as to control charging and discharging of the energy storage device.
In order to achieve the above object, the present application further provides a charge and discharge control device for an energy storage device, the energy storage device is connected to the transformer, the charge and discharge control device for the energy storage device includes:
the device comprises a first determination module, a second determination module and a control module, wherein the first determination module is used for determining a target operation mode of the energy storage device based on the current time period of the energy storage device;
the obtaining module is used for obtaining first active power of the energy storage device, second active power of the transformer and the current charge state of the energy storage device;
and the second determining module is used for determining a target operation parameter of the energy storage device in the target operation mode based on the first active power, the second active power and the current charge state of the energy storage device so as to control charging and discharging of the energy storage device.
The present application further provides an electronic device, the electronic device including: the program of the charging and discharging control method of the energy storage device can realize the steps of the charging and discharging control method of the energy storage device when being executed by the processor.
The present application also provides a computer-readable storage medium having stored thereon a program for implementing a charge and discharge control method for an energy storage device, the program, when executed by a processor, implementing the steps of the charge and discharge control method for an energy storage device as described above.
The present application also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the method for controlling charging and discharging of an energy storage device as described above.
The application provides a charge and discharge control method and device of an energy storage device, electronic equipment and a readable storage medium, wherein the energy storage device is connected with a transformer, namely, a target operation mode of the energy storage device is determined based on the current time period of the energy storage device; acquiring a first active power of the energy storage device, a second active power of the transformer and a current state of charge of the energy storage device; and determining a target operation parameter of the energy storage device in the target operation mode based on the first active power, the second active power and the current state of charge of the energy storage device so as to control charging and discharging of the energy storage device.
According to the method and the device, based on the current time period of the energy storage device, the ideal operation mode of the energy storage device is firstly determined, whether the determined ideal operation mode is charging, discharging or standby is determined, and then the ideal operation parameters of the energy storage device in the ideal operation mode are determined by combining the first active power of the energy storage device, the second active power of the transformer and the current charge state of the energy storage device, so that the energy storage device is subjected to charge and discharge control.
The target operation parameters are determined jointly according to the first active power of the energy storage device, the second active power of the transformer and the current charge state of the energy storage device, namely, the target operation parameters are determined jointly according to the related parameters of the energy storage device and the transformer after the ideal operation mode of the energy storage device is determined, and then the target operation parameters can determine the power adaptation degree of the energy storage device and the transformer, so that when the power load of the transformer changes continuously, the energy storage device is flexibly controlled to charge and discharge, and the purpose of effectively controlling the power consumption of the power system can be achieved.
Based on this, this application carries out charge control to energy memory through electric power system according to target operating parameter, thereby when end power consumption load uprises, can fully prevent the transformer overload of end of using electricity, electric power system carries out discharge control to energy memory according to target operating parameter, thereby when end power consumption load step-down, fully prevent energy memory's electric energy resource adverse current, namely, overcome user end power consumption load effectively and made electric power system power consumption uncontrollable and lead to the fact that end transformer appears the technical defect of the circumstances such as overload or energy memory electric energy adverse current, make the electric energy of target electric power system obtain effective utilization, so, the running cost of electric power system when energy memory peak clipping filling valley operation has been reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic flow chart illustrating a first embodiment of a charge/discharge control method for an energy storage device according to the present application;
FIG. 2 is a schematic diagram of a target power system for a charging and discharging control method of an energy storage device according to the present application;
fig. 3 is a schematic diagram of a corresponding relationship between an operation mode and an operation time period of the charge and discharge control method for the energy storage device according to the present application;
fig. 4 is a schematic flowchart of a second embodiment of a charge/discharge control method for an energy storage device according to the present application;
FIG. 5 is a schematic diagram of an embodiment of a charging and discharging control device of an energy storage device according to the present application;
fig. 6 is a schematic structural diagram of a hardware operating environment related to a charge and discharge control method of an energy storage device in the embodiment of the present application.
The implementation of the objectives, functional features, and advantages of the present application will be further described with reference to the accompanying drawings.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example one
Firstly, it should be understood that the energy storage device installed in the power system can inject active power and reactive power into the grid during grid-connected operation, so as to realize the functions of primary frequency modulation, reactive support, participation in the dispatching and regulation of the grid, peak clipping and valley filling, and stabilizing the fluctuation of new energy power generation. At present, when the energy storage device is operated in peak clipping and valley filling, charging power or discharging power is generally set for each time interval in advance, that is, power is supplied to a user end by using fixed discharging power corresponding to the time interval in a user end electricity utilization peak time interval (when electricity price is high), so that electricity utilization cost of the user end is reduced, and the energy storage device is charged by using the fixed charging power corresponding to the time interval in a user end electricity utilization valley time interval (when the electricity price is low), so that charging cost of the energy storage device is reduced. However, in any fixed time period, the power load of the user terminal is constantly changing, and further the power load of the user terminal may increase rapidly when the energy storage device is charged, and further the transformer of the user terminal is overloaded, or the power load of the user terminal may decrease sharply when the energy storage device is discharged, and further the electric energy of the energy storage device flows back to the upper level power grid, and the electric energy conversion efficiency of the transformer is affected when the transformer of the user terminal is overloaded, and the electric energy of the energy storage device wastes when the electric energy of the energy storage device flows back to the upper level power grid, so that the electric energy of the electric power system is not effectively utilized, and therefore, the electric power cost for controlling the energy storage device of the electric power system to charge and discharge is high, and therefore, a method for reducing the operation cost of the electric power system when the energy storage device performs peak clipping and valley filling operations is urgently needed at present.
In a first embodiment of the charge and discharge control method for an energy storage device according to the present application, referring to fig. 1, the charge and discharge control method for an energy storage device includes:
step S10, determining a target operation mode of the energy storage device based on the current time period of the energy storage device;
step S20, acquiring a first active power of the energy storage device, a second active power of the transformer and a current charge state of the energy storage device;
and S30, determining a target operation parameter of the energy storage device in the target operation mode based on the first active power, the second active power and the current charge state of the energy storage device, so as to control charging and discharging of the energy storage device.
In this embodiment, it should be noted that although fig. 1 shows a logical sequence, in some cases, the steps shown or described may be performed in a different order than herein, the charge and discharge control method of the energy storage device is applied to a target power system, the transformer and the energy storage device are both part of a target power system, which is a power system waiting for charge and discharge control of the set energy storage device, and referring to fig. 2, fig. 2 is a schematic diagram showing a target power system, which may be specifically a power system of a power utilization site such as a factory, a commercial building, a residential district, and a school, the target power system is provided with an energy storage device, a transformer, electric equipment, a charge and discharge control device and the like, wherein the energy storage device is electrically connected with the transformer, the charge-discharge control device can be an upper computer, the electric energy storage system is used for realizing the charging and discharging control of an energy storage device, the energy storage device is an electric energy storage system for storing electric energy at a user side of the target electric power system, and specifically comprises main equipment such as an energy storage converter, an incoming line breaker and an energy storage battery, when the energy storage device is in a peak clipping and valley filling operation state, the energy storage device can discharge at peak time and charge at valley time, namely, the target power system is ensured to be in the peak period of power utilization, the consumption of electric energy which is supplied to a superior power grid by the target power system and is converted by a transformer is reduced, thereby reducing the power consumption cost of the target power system, ensuring that the target power system is in the power consumption valley period, the energy storage device is charged, so that the charging cost of the energy storage device is reduced, the power utilization cost of the power system is also reduced, and preparation is made for discharging of the energy storage device in the power utilization peak time period.
Additionally, it should be noted that the target operation mode is used for representing an operation mode at any time interval, specifically may be a standby mode, a charging mode, or a discharging mode, and since the electricity prices of different operation time intervals are different, further an upper opportunity in the target power system sets an energy storage device at a low electricity price in advance for charging, and sets an energy storage device at a high electricity price for discharging, in order to make the set different operation modes have referential properties, a time interval attribute is introduced, where the time interval attribute is used for representing electricity utilization attributes of the operation time interval, specifically may be a peak, a flat, a trough, and the like, and the operation mode may be comprehensively set according to factors such as regions and seasons, for example, referring to fig. 3, fig. 3 is a schematic diagram showing a corresponding relationship between the operation mode and the operation time interval, where different operation time intervals all have a time interval attribute, and corresponding operation modes, and when located in different operation time intervals, it means that the energy storage device is located in the operation mode corresponding to the time interval.
Additionally, it should be noted that the first active power and the second active power are both active powers, the active powers are used for representing alternating current electric energy actually sent or consumed by the electric equipment in a unit time, an upper computer in the target electric power system may collect the active powers in real time through a collection device, and the upper computer is preset with parameters such as a rated power of an energy storage device, an upper limit of a State of charge (SOC) of the energy storage device, a lower limit of the SOC of the energy storage device, a rated capacity of a transformer, a maximum load (overload control point) of the transformer, and a minimum load (reverse flow control point) of the transformer, for example, in an implementable manner, the second active power of the transformer may be obtained in real time from a transformer monitoring device (such as an intelligent electric meter) of the target electric power system through a Modbus RTU communication protocol or an RS serial communication manner, and the first active power of the energy storage device may be directly read from the energy storage device through the Modbus RTU communication protocol or the RS serial communication manner, wherein the communication protocol and the communication manner may be selected according to actual project and service requirements, and the communication protocol may also be nbprofius 422, or the Modbus or RS485 communication protocol may also be 422, or the like.
Additionally, it should be noted that the target operating parameter is calculated from the first active power of the energy storage device and the second active power of the transformer, and is specifically characterized by a degree of adaptation of the energy storage device and the transformer of the target power system to the power resource, and specifically may be a target active power, for example, in an implementable manner, if the energy storage device is in a charging mode and the electric equipment is using power, the target active power may be a charging active power that controls the energy storage device to charge, and the transformer load in the target power system is not overloaded, and if the energy storage device is in a discharging mode and the electric equipment is using power, the target active power may be a discharging active power that controls the energy storage device to discharge, and the electric energy of the energy storage device is not flowing back to the upper power grid.
As an example, steps S10 to S30 include: when an upper computer of a target power system scans a preset operation identifier, determining that the energy storage device is in a peak clipping and valley filling operation state, reading a current time period of the energy storage device, and determining a target operation mode of the energy storage device according to the current time period, wherein the preset operation identifier is used for detecting whether the energy storage device is in the peak clipping and valley filling operation state, and specifically can be a control signal or a starting signal and the like; acquiring first active power of the energy storage device, second active power of the transformer and the current charge state of the energy storage device in real time through an acquisition device; and determining a target active power of the energy storage device in the target operation mode based on the first active power, the second active power and the current state of charge of the energy storage device so as to perform charge and discharge control on the energy storage device, wherein the target active power can be charging active power or discharging active power. The target active power takes the real-time power load of the power utilization end into consideration, and then the target active power is used for controlling the charging and discharging of the energy storage device to be the ideal operating power of the energy storage device in the target operating mode, namely, the purpose of controlling the transformer load is realized, and the technical defect that the conditions of overload of a transformer at a user end or electric energy countercurrent of the energy storage device and the like are easily caused by charging and discharging with the fixed power in the fixed operating period is avoided, so that the power utilization cost of a target power system during the peak clipping and valley filling operation of the energy storage device is reduced.
The upper computer is deployed in the energy storage device in real time in the process of realizing the charge and discharge control of the energy storage device, executes logics such as calculation and judgment, and issues specific control instructions, for example, in an implementable manner, the upper computer of the target power system can be deployed in the energy storage device, a preset operation mapping table of a mapping relation between a current time period and a target operation mode is stored in a memory module of the energy storage device, and then when the upper computer deployed in the energy storage device detects that the energy storage device is in a peak clipping and valley filling operation state, the upper computer queries the corresponding target operation mode in the preset operation mapping table through the acquired current time period, and determines the target power of the energy storage device in the target operation mode according to the acquired first active power and second active power, so that the charge and discharge between the energy storage device and the transformer are adapted, and the purpose of reducing the peak clipping cost of the power system in the process of reducing the peak clipping of the energy storage device is realized.
Wherein the target operating mode comprises a discharging mode, and the step of determining the target operating parameter of the energy storage device in the target operating mode based on the first active power, the second active power and the current state of charge of the energy storage device comprises:
step A10, determining a discharging margin parameter of the energy storage device in the discharging mode based on a difference value between the second active power and the lowest load power of the transformer;
step A20, determining a first power adaptation parameter between the energy storage device and the transformer based on the sum of the discharge margin parameter and the first active power;
step a30, determining a target operating parameter of the energy storage device in the discharge mode based on the first power adaptation parameter and the current state of charge of the energy storage device.
In this embodiment, it should be noted that, when the target operation modes of the energy storage device are different, there is a difference in the obtaining manner of the target operation parameter, where the discharge margin parameter is used to represent a discharge power margin available to the energy storage device, the first power adaptation parameter is used to represent an adaptation degree of the energy storage device in the discharge mode with the second active power of the transformer, specifically, the adaptation degree may be adapted to the discharge active power, and when the target operation mode of the energy storage device is the discharge mode, the discharge power that the energy storage device can improve, that is, the discharge power margin, may be determined through the real-time power of the power consumption end transformer and the minimum load power of the transformer. And determining the ideal operating power of the energy storage device in the discharging mode by combining the discharging power margin and the first active power of the energy storage device.
Optionally, the step of determining the discharge margin parameter of the energy storage device in the discharge mode based on the difference between the second active power and the lowest load power of the transformer specifically includes:
ΔP 1 ＝P t0 -P tL
wherein, Δ P 1 Is the discharge margin parameter, P t0 For the real-time power (second active power), P, of the power-consuming-end transformer tL The power of the transformer is the lowest load power, namely, the discharge margin parameter of the energy storage device is indicated by the difference between the real-time power of the transformer at the power end and the lowest load of the transformer.
The step of determining a first power adaptation parameter between the energy storage device and the transformer based on the sum of the discharge margin parameter and the first active power specifically includes:
P 1 ＝ΔP 1 +P 0
wherein, P 1 To be adapted toActive power of discharge, P 0 Real-time power (first active power) for the energy storage device.
Wherein the step of determining a target operating parameter of the energy storage device in the discharge mode based on the first power adaptation parameter and the current state of charge of the energy storage device comprises:
step B10, when the first power adaptation parameter is larger than a first preset adaptation threshold value and the current state of charge is larger than a lower limit of the state of charge, determining that the minimum value of the first power adaptation parameter and the rated power parameter of the energy storage device is a target operation parameter of the energy storage device;
step B20, when the first power adaptation parameter is larger than the first preset adaptation threshold and the current state of charge is smaller than or equal to the lower limit of the state of charge, determining that a target operation parameter of the energy storage device is zero;
and step B30, when the first power adaptation parameter is smaller than or equal to the first preset adaptation threshold value, determining that the target operation parameter of the energy storage device is zero.
In this embodiment, it should be noted that the current state of charge is a ratio of a remaining capacity of an energy storage battery of the energy storage device to a rated total capacity of the energy storage battery, where for the energy storage device, the energy storage device has an upper state of charge limit and a lower state of charge limit, and the upper state of charge limit and the lower state of charge limit can be set by a user according to a requirement, for example, in an implementable manner, the upper state of charge limit of the energy storage device is 100%, and the lower state of charge limit of the energy storage device is 20%.
Additionally, it should be noted that, because the discharging power of the energy storage device during the discharging process is not controllable, a situation that the discharging power of the energy storage device is greater than the power required by the power consumption end may occur, and then the current flows reversely, so that not only the loss of the electric energy resource is caused after the electric energy flows reversely, but also a certain safety hazard may exist, and the operating power of the energy storage device follows a negative charging and positive discharging principle, that is, when the operating power is a negative value, the charging active power is indicated, and when the operating power is a positive value, the discharging active power is indicated, and when the target operating mode of the energy storage device is the discharging mode, the adaptive discharging active power of the energy storage device in the discharging mode is reasonably controlled by setting a first preset adaptive threshold and combining the real-time charge state of the energy storage device, for example, in a practical implementation manner, the first preset adaptive threshold may be set to zero, and when the adaptive active discharging power of the energy storage device is less than or equal to the first preset adaptive threshold, it is assumed that the energy storage device will be able to determine the target charging cost of the active power in the discharging peak time period in order to control the energy storage device in the discharging mode.
As an example, steps B10 to B30 include: when the adaptive discharge power is detected to be larger than zero and the current state of charge of the energy storage device is larger than the lower limit of the state of charge, determining that the target operation active power of the energy storage device in the discharge mode is the minimum value of the adaptive discharge power and the rated active power of the energy storage device; if the adaptive discharge power is detected to be larger than zero and the current state of charge of the energy storage device is smaller than or equal to the lower limit of the state of charge, determining that the target operation active power of the energy storage device in the discharge mode is zero; and if the adaptive discharge power is detected to be less than or equal to zero, determining that the target operation active power of the energy storage device in the discharge mode is zero. The adaptive discharging power is greater than zero, which indicates that the energy storage device discharges with the adaptive discharging power, and the occurrence of a reverse flow condition is avoided, so that the energy storage device is controlled not to discharge when the energy storage device is in different charge states, by adjusting the real-time discharging power of the energy storage device, that is, when the charge state of the energy storage device is too low, the energy storage device is controlled not to discharge, and when the charge state of the energy storage device is normal, the upper computer in the target power system discharges with a smaller value between the adaptive discharging power and the rated power, so that the power cost for controlling the energy storage device of the power system to charge and discharge is further reduced on the basis of ensuring the safety and the economy caused by the electric energy reverse flow risk when the energy storage device discharges.
Wherein the target operating mode comprises a charging mode, and the step of determining the target operating parameter of the energy storage device in the target operating mode based on the first active power, the second active power and the current state of charge of the energy storage device comprises:
step C10, determining a charging allowance parameter of the energy storage device in the charging mode based on a difference value between the second active power and the highest load power of the transformer;
step C20, determining a second power adaptation parameter between the energy storage device and the transformer based on the sum of the charging margin parameter and the first active power;
and step C30, determining a target operation parameter of the energy storage device in the charging mode based on the second power adaptation parameter and the current state of charge of the energy storage device.
In this embodiment, it should be noted that the charging margin parameter is used to represent a charging power margin available to the energy storage device, and the second power adaptation parameter is used to represent a degree of adaptation between the energy storage device and the second active power of the transformer in the charging mode, specifically, the adaptation active power may be used, and when the target operation mode of the energy storage device is the charging mode, the magnitude of the charging power that the energy storage device can improve, that is, the charging power margin, may be determined through the second active power of the power consumption end transformer and the highest load of the power consumption end transformer. And determining the ideal operating power of the energy storage device in the charging mode by combining the charging power margin and the first active power of the energy storage device.
The specific step of determining the charging margin parameter of the energy storage device in the charging mode based on the difference between the second active power and the highest load power of the transformer is as follows:
ΔP 2 ＝P t0 -P tH
wherein, Δ P 2 Is the charge balance parameter, P t0 For the real-time power (second active power), P, of the power-consuming-end transformer tH The maximum load power of the transformer, that is, the charge margin parameter of the energy storage device is indicated by the difference between the real-time power of the power-using end transformer and the maximum load power of the transformer.
The step of determining a second power adaptation parameter between the energy storage device and the transformer based on the sum of the charging margin parameter and the first active power specifically includes:
P 2 ＝ΔP 2 +P 0
wherein, P 2 For adapting the charging power, P 0 Real-time power (first active power) for the energy storage device.
Wherein the step of determining a target operating parameter of the energy storage device in the charging mode based on the second power adaptation parameter and the current state of charge of the energy storage device comprises:
step D10, when the second power adaptation parameter is smaller than a second preset adaptation threshold and the current state of charge is smaller than the upper limit of the state of charge, determining that the maximum value of the opposite numbers of the second power adaptation parameter and the rated power parameter of the energy storage device is the target operation parameter of the energy storage device;
step D20, when the second power adaptation parameter is smaller than the second preset adaptation threshold and the current state of charge is greater than or equal to the upper limit of the state of charge, determining that a target operation parameter of the energy storage device is zero;
and D30, when the second power adaptation parameter is greater than or equal to the second preset adaptation threshold value, determining that the target operation parameter of the energy storage device is zero.
In this embodiment, it should be noted that, when the target operation mode of the energy storage device is the charging mode, the adaptive charging active power of the energy storage device in the charging mode is reasonably controlled by setting a second preset adaptive threshold and combining the real-time state of charge of the energy storage device, for example, in an implementable manner, the second preset adaptive threshold may be set to zero, and if the adaptive charging active power of the energy storage device is greater than or equal to the second preset adaptive threshold, it means that the energy storage device will discharge when the target operation mode is the charging mode, and in order to control a discharging benefit of the energy storage device at a power utilization trough, the target active power of the energy storage device may be determined to be zero, where the second preset adaptive threshold and the first adaptive threshold may be the same or different.
Additionally, it should be noted that, since the rated power of the energy storage device is negative during charging, not an actual value, but the charging power is adapted to an actual value, and then the rated power of the energy storage device is subjected to sign conversion before determining the target operating power of the energy storage device, for example, in an implementable manner, it is assumed that P is 2 For adapting the charging power, P e For the rated power of the energy storage device, P is obtained by comparison 2 And P e * The adaptive charging power and the rated active power of the transformer can be finished (-1), and whether the adaptive charging power exceeds the rated power range of the energy storage device or not can be judged.
As an example, steps D10 to D30 include: when the adaptive charging power is detected to be smaller than zero and the current state of charge of the energy storage device is detected to be smaller than the upper limit of the state of charge, determining that the target operation active power of the energy storage device in the charging mode is the maximum value of the opposite numbers of the adaptive charging power and the rated active power of the energy storage device as the target operation parameter of the energy storage device, wherein the opposite number of the rated active power is a positive value; when the adaptive charging power is detected to be smaller than zero and the current state of charge of the energy storage device is larger than or equal to the upper limit of the state of charge, determining that the target operation active power of the energy storage device in the charging mode is zero; and when the adaptive charging power is detected to be larger than or equal to zero, determining that the target operation active power of the energy storage device in the charging mode is zero. The adaptive charging power is less than zero, which indicates that the energy storage device is charged with the adaptive charging power, and the overload condition of the transformer at the power utilization end cannot be caused, so that the energy storage device is controlled not to be charged by adjusting the real-time charging power of the energy storage device when the energy storage device is in different charge states, namely, when the charge state of the energy storage device is too high, the energy storage device is controlled not to be charged due to the use protection of the energy storage device, and when the charge state of the energy storage device is normal, the energy storage device is charged with a larger value of the adaptive discharging power and the rated power (stored with the low electricity price cost) due to the consideration of the electric power cost, so that the electric power cost for controlling the energy storage device of the electric power system to be charged and discharged is further reduced on the basis of ensuring the safety and the economy caused by the overload of the transformer at the power utilization end when the energy storage device is charged.
It should be noted that the rated power of the energy storage device may be confirmed before the energy storage device is in a peak clipping and valley filling operation state, the rated power of the energy storage device is usually referred to as a positive value, that is, the rated power of the energy storage device may represent both the rated charging power and the rated discharging power, for example, assuming that the rated power of the energy storage device is 100kW, it means that the energy storage device may be charged with 100kW or discharged with 100kW, and for convenience and rapidness of setting, the energy storage device is usually set by negative charging and positive discharging, and when the energy storage device is in a discharging mode, since the adaptive discharging power and the rated power of the energy storage device are both actual values, the comparison may be performed directly.
In an implementable manner, the transformer top load power may be set to 1000kW, and the transformer bottom load power may be set to 5kW. Because the highest load power and the lowest load power of the power consumption end transformer are manually set, the power consumption end transformer is fixed before being manually changed, and further when the power consumption load of the power consumption end continuously changes, the adaptive charging power of the power consumption end transformer capable of bearing the energy storage device in an overload range can be still determined through the calculation mode, and the adaptive discharging power of the energy storage device capable of bearing the energy storage device on a reverse flow control point is determined, namely, the ideal power regulation and control range of the energy storage device is objectively reflected through the real-time dynamic power change condition of the power consumption end transformer, and further, a foundation is laid for controlling the energy storage device to charge and discharge by an upper computer of a target power system.
Wherein the target operating mode comprises a standby mode, and after the step of determining the target operating mode of the energy storage device, further comprising:
step E10, when the target operation mode is the standby mode, determining that the target operation parameter of the energy storage device is zero;
and E20, returning to the step of determining the target operation mode of the energy storage device according to the current time period of the energy storage device.
As an example, step E10 includes: and when the target operation mode of the energy storage device is a standby mode, determining that the target operation active power of the energy storage device in the standby mode is zero, and returning to execute the step of acquiring the real-time parameter of the energy storage device.
The embodiment of the application provides a charging and discharging control method of an energy storage device, wherein the energy storage device is connected to a transformer, namely, a target operation mode of the energy storage device is determined based on the current time period of the energy storage device; acquiring a first active power of the energy storage device, a second active power of the transformer and a current state of charge of the energy storage device; and determining a target operation parameter of the energy storage device in the target operation mode based on the first active power, the second active power and the current state of charge of the energy storage device so as to control charging and discharging of the energy storage device.
According to the method and the device, based on the current time period of the energy storage device, the ideal operation mode of the energy storage device is firstly determined, whether the determined ideal operation mode is charging, discharging or standby is determined, and then the ideal operation parameters of the energy storage device in the ideal operation mode are determined by combining the first active power of the energy storage device, the second active power of the transformer and the current charge state of the energy storage device, so that the energy storage device is subjected to charge and discharge control.
The target operation parameters are determined jointly according to the first active power of the energy storage device, the second active power of the transformer and the current charge state of the energy storage device, namely, the target operation parameters are determined jointly according to the related parameters of the energy storage device and the transformer after the ideal operation mode of the energy storage device is determined, and then the target operation parameters can determine the power adaptation degree of the energy storage device and the transformer, so that when the power load of the transformer changes continuously, the energy storage device is flexibly controlled to charge and discharge, and the purpose of effectively controlling the power consumption of the power system can be achieved.
Based on this, this application carries out charge control to energy memory through electric power system according to target operating parameter, thereby when end power consumption load uprises, can fully prevent the transformer overload of end of using electricity, electric power system carries out discharge control to energy memory according to target operating parameter, thereby when end power consumption load step-down, fully prevent energy memory's electric energy resource adverse current, namely, overcome user end power consumption load effectively and made electric power system power consumption uncontrollable and lead to the fact that end transformer appears the technical defect of the circumstances such as overload or energy memory electric energy adverse current, make the electric energy of target electric power system obtain effective utilization, so, the running cost of electric power system when energy memory peak clipping filling valley operation has been reduced.
Example two
Further, referring to fig. 4, in another embodiment of the present application, the same or similar contents as those in the first embodiment may refer to the above description, and are not repeated herein, and it should be noted that, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different sequence from that in the present disclosure. On this basis, the step of determining the target operation mode of the energy storage device based on the current time period of the energy storage device comprises:
step F10, acquiring real-time parameters of the energy storage device;
step F20, determining the current time period of the energy storage device according to the real-time parameters;
and F30, determining a target operation mode of the energy storage device according to the current time period.
In this embodiment, it should be noted that, in this embodiment, it should be noted that the energy storage devices are located in different regions or in different seasons, so that the time period attributes of the peak, the level, the valley, and the like are divided differently, and further, when the operation mode needs to be adjusted accordingly, the charge and discharge control device needs to be updated.
As an example, steps F10 to F30 include: reading real-time; inquiring corresponding operation time interval according to the real-time; and inquiring a corresponding target operation mode in a preset operation mapping table by taking the operation time period as an index, wherein the preset operation mapping table stores the mapping relation between the operation time period and the operation mode.
The embodiment of the application provides a charging and discharging control method of an energy storage device, namely, acquiring real-time parameters of the energy storage device; determining the current time period of the energy storage device according to the real-time parameter; and determining a target operation mode of the energy storage device according to the current time period. Because the charge-discharge control device can automatically inquire the operation mode of the energy storage device after reading the real-time, and then the purpose of charge-discharge control on the energy storage device is realized according to the operation mode, the situation that the energy storage device is in different regions or in different seasons is avoided, the setting condition needs to be updated on the energy storage device, and the flexibility of obtaining the target operation mode of the energy storage device is improved.
EXAMPLE III
The embodiment of the present application further provides a charge and discharge control device for an energy storage device, which is applied to a target power system, wherein the energy storage device is electrically connected to a transformer, with reference to fig. 5, the charge and discharge control device for the energy storage device includes:
the first determining module 101 is configured to determine a target operation mode of the energy storage device based on a current time period of the energy storage device;
the obtaining module 102 is configured to obtain a first active power of the energy storage device, a second active power of the transformer, and a current state of charge of the energy storage device;
a second determining module 103, configured to determine a target operation parameter of the energy storage device in the target operation mode based on the first active power, the second active power, and the current state of charge of the energy storage device, so as to perform charge and discharge control on the energy storage device.
Optionally, the target operation mode includes a discharging mode, and the second determining module 103 is further configured to:
determining a discharge margin parameter of the energy storage device in the discharge mode based on a difference value between the second active power and the lowest load power of the transformer;
determining a first power adaptation parameter between the energy storage device and the transformer based on a sum of the discharge margin parameter and the first active power;
determining a target operating parameter of the energy storage device in the discharge mode based on the first power adaptation parameter and a current state of charge of the energy storage device.
Optionally, the second determining module 103 is further configured to:
when the first power adaptation parameter is larger than a first preset adaptation threshold value and the current state of charge is larger than the lower limit of the state of charge, determining that the minimum value of the first power adaptation parameter and the rated power parameter of the energy storage device is a target operation parameter of the energy storage device;
when the first power adaptation parameter is larger than the first preset adaptation threshold and the current state of charge is smaller than or equal to the lower limit of the state of charge, determining that a target operation parameter of the energy storage device is zero;
and when the first power adaptation parameter is smaller than or equal to the first preset adaptation threshold value, determining that the target operation parameter of the energy storage device is zero.
Optionally, the target operation mode includes a charging mode, and the second determining module 103 is further configured to:
determining a charging margin parameter of the energy storage device in the charging mode based on a difference between the second active power and a highest load power of the transformer;
determining a second power adaptation parameter between the energy storage device and the transformer based on a sum of the charge margin parameter and the first active power;
determining a target operating parameter of the energy storage device in the charging mode based on the second power adaptation parameter and a current state of charge of the energy storage device.
Optionally, the second determining module 103 is further configured to:
when the second power adaptation parameter is smaller than a second preset adaptation threshold and the current state of charge is smaller than the upper limit of the state of charge, determining that the maximum value of the opposite numbers of the second power adaptation parameter and the rated power parameter of the energy storage device is a target operation parameter of the energy storage device;
when the second power adaptation parameter is smaller than the second preset adaptation threshold and the current state of charge is greater than or equal to the upper limit of the state of charge, determining that a target operation parameter of the energy storage device is zero;
and when the second power adaptation parameter is greater than or equal to the second preset adaptation threshold value, determining that the target operation parameter of the energy storage device is zero.
Optionally, the target operation mode includes a standby mode, and the charge and discharge control device of the energy storage device is further configured to:
after the step of determining the target operation mode of the energy storage device, the method further comprises:
when the target operation mode is the standby mode, determining that the target operation parameter of the energy storage device is zero;
and returning to execute the step of determining the target operation mode of the energy storage device according to the current time period of the energy storage device.
Optionally, the charge and discharge control device of the energy storage device is further configured to:
acquiring real-time parameters of the energy storage device;
determining the current time period of the energy storage device according to the real-time parameter;
and determining a target operation mode of the energy storage device according to the current time period.
According to the charge and discharge control device of the energy storage device, the charge and discharge control method of the energy storage device in the embodiment is adopted, and the technical problem that the operation cost of an electric power system is high when the energy storage device performs peak clipping and valley filling is solved. Compared with the prior art, the beneficial effects of the charge and discharge control device of the energy storage device provided by the embodiment of the invention are the same as the beneficial effects of the charge and discharge control method of the energy storage device provided by the embodiment, and other technical characteristics of the charge and discharge control device of the energy storage device are the same as those disclosed by the embodiment method, which are not repeated herein.
Example four
An embodiment of the present invention provides an electronic device, including: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the method for controlling charging and discharging of the energy storage device in the first embodiment.
Referring now to FIG. 6, shown is a schematic diagram of an electronic device suitable for use in implementing embodiments of the present disclosure. The electronic devices in the embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., car navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like. The electronic device shown in fig. 6 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 6, the electronic device may include a processing means 1001 (e.g., a central processing unit, a graphic processor, etc.) which can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 1002 or a program loaded from a storage means 1003 into a Random Access Memory (RAM) 1004. In the RAM1004, various programs and data necessary for the operation of the electronic apparatus are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input/output (I/O) interface 1006 is also connected to the bus.
Generally, the following systems may be connected to the I/O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, or the like; output devices 1008 including, for example, liquid Crystal Displays (LCDs), speakers, vibrators, and the like; a storage device 1003 including, for example, a magnetic tape, a hard disk, or the like; and a communication device 1009. The communication means may allow the electronic device to communicate wirelessly or by wire with other devices to exchange data. While the figures illustrate an electronic device with various systems, it is to be understood that not all illustrated systems are required to be implemented or provided. More or fewer systems may alternatively be implemented or provided.
In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication means 1009, or installed from the storage means 1003, or installed from the ROM 1002. The computer program, when executed by the processing device 1001, performs the above-described functions defined in the methods of the embodiments of the present disclosure.
By adopting the charge-discharge control method of the energy storage device in the embodiment, the electronic equipment provided by the invention solves the technical problem of high operation cost of the power system when the energy storage device performs peak clipping and valley filling. Compared with the prior art, the electronic device provided by the embodiment of the invention has the same beneficial effects as the charging and discharging control method of the energy storage device provided by the embodiment, and other technical features of the electronic device are the same as those disclosed in the embodiment method, which are not repeated herein.
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
EXAMPLE five
The present embodiment provides a computer-readable storage medium having computer-readable program instructions stored thereon for executing the charge and discharge control method of the energy storage device in the above-described embodiments.
The computer readable storage medium provided by the embodiments of the present invention may be, for example, a USB flash disk, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, or device, or any combination thereof. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present embodiment, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, or device. Program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The computer-readable storage medium may be embodied in an electronic device; or may be present alone without being incorporated into the electronic device.
The computer readable storage medium carries one or more programs which, when executed by the electronic device, cause the electronic device to: determining a target operation mode of the energy storage device based on the current time period of the energy storage device; acquiring a first active power of the energy storage device, a second active power of the transformer and a current state of charge of the energy storage device; and determining a target operation parameter of the energy storage device in the target operation mode based on the first active power, the second active power and the current state of charge of the energy storage device, so as to control charging and discharging of the energy storage device.
Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The modules described in the embodiments of the present disclosure may be implemented by software or hardware. Wherein the names of the modules do not in some cases constitute a limitation of the unit itself.
The computer-readable storage medium provided by the invention stores computer-readable program instructions for executing the charging and discharging control method of the energy storage device, and solves the technical problem that the operating cost of the power system is high when the energy storage device is operated in peak clipping and valley filling. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the embodiment of the invention are the same as the beneficial effects of the charge and discharge control method of the energy storage device provided by the embodiment, and details are not repeated herein.
Example six
The present application also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the method for controlling charging and discharging of an energy storage device as described above.
The computer program product provided by the application solves the technical problem that the operation cost of the power system is high when the energy storage device is used for peak clipping and valley filling. Compared with the prior art, the beneficial effects of the computer program product provided by the embodiment of the invention are the same as those of the charge and discharge control method of the energy storage device provided by the embodiment, and are not repeated herein.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.
Claims (10)
1. A charge and discharge control method of an energy storage device is characterized in that the energy storage device is electrically connected with a transformer, and the charge and discharge control method of the energy storage device comprises the following steps:
determining a target operation mode of the energy storage device based on the current time period of the energy storage device;
acquiring a first active power of the energy storage device, a second active power of the transformer and a current state of charge of the energy storage device;
and determining a target operation parameter of the energy storage device in the target operation mode based on the first active power, the second active power and the current state of charge of the energy storage device, so as to control charging and discharging of the energy storage device.
2. The charge-discharge control method of an energy storage device according to claim 1, wherein the target operation mode includes a discharge mode,
the step of determining a target operating parameter of the energy storage device in the target operating mode based on the first active power, the second active power, and the current state of charge of the energy storage device comprises:
determining a discharge margin parameter of the energy storage device in the discharge mode based on a difference between the second active power and a lowest load power of the transformer;
determining a first power adaptation parameter between the energy storage device and the transformer based on a sum of the discharge margin parameter and the first active power;
determining a target operating parameter of the energy storage device in the discharge mode based on the first power adaptation parameter and a current state of charge of the energy storage device.
3. The method of claim 2, wherein the step of determining the target operating parameter of the energy storage device in the discharge mode based on the first power adaptation parameter and the current state of charge of the energy storage device comprises:
when the first power adaptation parameter is larger than a first preset adaptation threshold value and the current state of charge is larger than the lower limit of the state of charge, determining that the minimum value of the first power adaptation parameter and the rated power parameter of the energy storage device is a target operation parameter of the energy storage device;
when the first power adaptation parameter is larger than the first preset adaptation threshold and the current state of charge is smaller than or equal to the lower limit of the state of charge, determining that a target operation parameter of the energy storage device is zero;
and when the first power adaptation parameter is smaller than or equal to the first preset adaptation threshold value, determining that the target operation parameter of the energy storage device is zero.
4. The charge-discharge control method of an energy storage device according to claim 1, wherein the target operation mode includes a charge mode,
the step of determining a target operating parameter of the energy storage device in the target operating mode based on the first active power, the second active power, and the current state of charge of the energy storage device comprises:
determining a charging margin parameter of the energy storage device in the charging mode based on a difference value between the second active power and a highest load power of the transformer;
determining a second power adaptation parameter between the energy storage device and the transformer based on a sum of the charge margin parameter and the first active power;
determining a target operating parameter of the energy storage device in the charging mode based on the second power adaptation parameter and a current state of charge of the energy storage device.
5. The method according to claim 4, wherein the step of determining the target operating parameter of the energy storage device in the charging mode based on the second power adaptation parameter and the current state of charge of the energy storage device comprises:
when the second power adaptation parameter is smaller than a second preset adaptation threshold and the current state of charge is smaller than the upper limit of the state of charge, determining that the maximum value of the opposite numbers of the second power adaptation parameter and the rated power parameter of the energy storage device is a target operation parameter of the energy storage device;
when the second power adaptation parameter is smaller than the second preset adaptation threshold and the current state of charge is greater than or equal to the upper limit of the state of charge, determining that a target operation parameter of the energy storage device is zero;
and when the second power adaptation parameter is greater than or equal to the second preset adaptation threshold value, determining that the target operation parameter of the energy storage device is zero.
6. The charge and discharge control method of an energy storage device according to claim 1, wherein the target operation mode includes a standby mode,
after the step of determining the target operation mode of the energy storage device, the method further comprises:
when the target operation mode is the standby mode, determining that the target operation parameter of the energy storage device is zero;
and returning to execute the step of determining the target operation mode of the energy storage device according to the current time period of the energy storage device.
7. The method of claim 1, wherein the step of determining the target operating mode of the energy storage device based on the current time period of the energy storage device comprises:
acquiring real-time parameters of the energy storage device;
determining the current time period of the energy storage device according to the real-time parameter;
and determining a target operation mode of the energy storage device according to the current time period.
8. A charge-discharge control device for an energy storage device, the energy storage device being electrically connected to a transformer, the charge-discharge control device comprising:
the device comprises a first determination module, a second determination module and a control module, wherein the first determination module is used for determining a target operation mode of the energy storage device based on the current time period of the energy storage device;
the obtaining module is used for obtaining first active power of the energy storage device, second active power of the transformer and the current charge state of the energy storage device;
and the second determining module is used for determining a target operation parameter of the energy storage device in the target operation mode based on the first active power, the second active power and the current charge state of the energy storage device so as to control charging and discharging of the energy storage device.
9. An electronic device, characterized in that the electronic device comprises:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the steps of the method of controlling charging and discharging of an energy storage device according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that a program for implementing a charge and discharge control method for an energy storage device is stored thereon, and the program for implementing the charge and discharge control method for an energy storage device is executed by a processor to implement the steps of the charge and discharge control method for an energy storage device according to any one of claims 1 to 7.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742665A (en) * | 2023-08-09 | 2023-09-12 | 江苏天合储能有限公司 | Power control method and device of energy storage charging system and energy storage charging system |
| CN116754975A (en) * | 2023-06-09 | 2023-09-15 | 浙江海得智慧能源有限公司 | Method, system and equipment for testing charge and discharge of energy storage system |
| CN117060476A (en) * | 2023-10-11 | 2023-11-14 | 南方电网电力科技股份有限公司 | Battery energy storage device, battery energy storage control method and equipment |
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2022
- 2022-12-12 CN CN202211599468.8A patent/CN115833202A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116754975A (en) * | 2023-06-09 | 2023-09-15 | 浙江海得智慧能源有限公司 | Method, system and equipment for testing charge and discharge of energy storage system |
| CN116754975B (en) * | 2023-06-09 | 2024-04-23 | 浙江海得智慧能源有限公司 | Method, system and equipment for testing charge and discharge of energy storage system |
| CN116742665A (en) * | 2023-08-09 | 2023-09-12 | 江苏天合储能有限公司 | Power control method and device of energy storage charging system and energy storage charging system |
| CN116742665B (en) * | 2023-08-09 | 2023-11-28 | 江苏天合储能有限公司 | Power control method and device of energy storage charging system and energy storage charging system |
| CN117060476A (en) * | 2023-10-11 | 2023-11-14 | 南方电网电力科技股份有限公司 | Battery energy storage device, battery energy storage control method and equipment |
| CN117060476B (en) * | 2023-10-11 | 2024-02-13 | 南方电网电力科技股份有限公司 | Battery energy storage device, battery energy storage control method and equipment |
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