CN111740437A - Management method, device and circuit of energy storage system, electronic equipment and storage medium - Google Patents
Management method, device and circuit of energy storage system, electronic equipment and storage medium Download PDFInfo
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- CN111740437A CN111740437A CN202010386213.8A CN202010386213A CN111740437A CN 111740437 A CN111740437 A CN 111740437A CN 202010386213 A CN202010386213 A CN 202010386213A CN 111740437 A CN111740437 A CN 111740437A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
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Abstract
The invention discloses a management method of an energy storage system, which comprises the following steps: acquiring a current time parameter, and acquiring an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters; receiving energy data sent by an energy acquisition module, determining a planned working mode of the energy storage battery according to the energy data and energy plan parameters, and generating an energy control instruction corresponding to the planned working mode; and sending the energy control instruction to an energy management module so as to manage the energy of the energy storage battery according to the energy control instruction. Through the implementation of the scheme, the energy storage system can select the corresponding energy plan parameters according to the time parameters corresponding to the peak-valley characteristics of the power grid, manage the energy of the energy storage battery by combining the energy data, fully utilize the characteristics of the energy storage battery and effectively reduce the influence of the peak-valley characteristics of the power grid on the energy of the energy storage battery.
Description
Technical Field
The present invention relates to the field of energy storage systems, and in particular, to a method, an apparatus, a circuit, an electronic device, and a storage medium for managing an energy storage system.
Background
In the energy supply of the electronic device, energy can be provided through a power grid, or an energy storage battery, such as a lithium battery, is used for storing electric quantity by using the energy storage battery, and the energy storage battery provides energy for a direct current load, so as to reduce the dependence of the electronic device on the power grid, and when the power supply power of the power grid is low, the energy storage battery can provide required energy for the electronic device in real time. This therefore requires that the energy storage battery should contain sufficient energy, which requires a timely recharge of the energy storage battery when the energy contained in the energy storage battery is low.
In the related art, when the energy storage battery is discharged and charged, the energy storage battery is usually discharged when an electronic device or a circuit has a load demand, and the battery is charged when the battery cannot be discharged, however, the energy storage characteristic of the battery is not fully utilized by the battery charging and discharging method, and the battery energy cannot be managed according to the peak-valley characteristic of the power grid.
Therefore, it is necessary to provide an energy storage management technique.
Disclosure of Invention
The invention provides a management method, a management device, a management circuit, electronic equipment and a storage medium of an energy storage system, which can solve the technical problem that battery energy cannot be managed according to the peak-valley characteristics of a power grid in the prior art.
The invention provides a management method of an energy storage system in a first aspect, which comprises the following steps:
acquiring a current time parameter, and acquiring an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters;
receiving energy data sent by an energy acquisition module, determining a planned working mode of the energy storage battery according to the energy data and the energy plan parameters, and generating an energy control instruction corresponding to the planned working mode;
and sending the energy control instruction to an energy management module so as to manage the energy of the energy storage battery according to the energy control instruction.
Optionally, the planned operation mode includes: a charge mode and a discharge mode, the energy control command comprising: if the energy input instruction and the energy output instruction are received, the step of determining the planned working mode of the energy storage battery according to the energy data and the energy plan parameters and generating an energy control instruction corresponding to the planned working mode comprises the following steps:
comparing the received energy data with a preset energy reserve threshold, wherein the energy plan parameters include the energy reserve threshold;
if the energy data is less than or equal to the energy reserve threshold, determining that the planned working mode is a charging mode, and generating the energy input instruction corresponding to the charging mode;
and if the energy data is larger than the energy storage threshold, judging that the planned working mode is a discharging mode, and generating the energy output instruction corresponding to the discharging mode.
Optionally, the step of sending the energy control instruction to an energy management module to manage the energy of the energy storage battery according to the energy control instruction includes:
and sending the energy input instruction to the energy management module so as to convert the alternating current of the power grid into the direct current with preset power according to the energy input instruction, wherein the direct current is used for inputting the energy storage battery for charging.
Optionally, when the energy storage system is in a charging mode, receiving energy update data sent by the energy acquisition module, and comparing the energy update data with a preset mode conversion threshold, where the energy plan parameter further includes the mode conversion threshold;
if the energy updating data is larger than or equal to the mode conversion threshold, changing the planned working mode into the discharging mode, and generating the energy output instruction corresponding to the discharging mode;
and if the energy updating data is smaller than the mode conversion threshold value, continuing to execute the charging mode.
Optionally, when the energy storage system is in the discharge mode, the step of sending the energy control instruction to an energy management module to manage the energy of the energy storage battery according to the energy control instruction includes:
and sending the energy output instruction to the energy management module so as to convert the energy of the energy storage battery into direct current with preset power according to the energy output instruction, and supplying the direct current to a direct current load for use.
Optionally, an alternating current power limiting instruction is generated according to the energy plan parameter, and the alternating current power limiting instruction is sent to an alternating current power module, so that the alternating current of the power grid is converted into direct current with preset power according to the alternating current power limiting instruction, and the direct current power is used by a direct current load.
A second aspect of the present invention provides a management apparatus for an energy storage system, including:
the acquisition module is used for acquiring a current time parameter and acquiring an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters;
the processing module is used for receiving the energy data sent by the energy acquisition module, determining a planned working mode of the energy storage battery according to the energy data and the energy plan parameters, and generating an energy control instruction corresponding to the planned working mode;
and the sending module is used for sending the energy control instruction to an energy management module so as to manage the energy of the energy storage battery according to the energy control instruction.
A third aspect of the present invention provides a management circuit for an energy storage system, comprising: the energy management system comprises a management device, an energy acquisition module, an energy management module and an energy storage battery, wherein the management device is respectively electrically connected with the energy acquisition module and the energy management module, the energy acquisition module is also electrically connected with the energy storage battery, and the energy management module is also electrically connected with the energy storage battery;
the energy acquisition module is used for acquiring energy data of the energy storage battery at any moment;
the management device is used for acquiring a current time parameter and acquiring an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters; receiving energy data sent by an energy acquisition module, determining a planned working mode of the energy storage battery according to the energy data and the energy plan parameters, and generating an energy control instruction corresponding to the planned working mode; sending the energy control instruction to an energy management module;
the energy management module is used for managing the energy of the energy storage battery according to the energy control instruction.
A fourth aspect of the present invention provides an electronic device, including a memory, a processor, and a communication bus, where the communication bus is respectively in communication connection with the memory and the processor, the memory stores a computer program, and the processor executes the computer program to implement each step in the method for managing an energy storage system according to any one of the above aspects.
A fifth aspect of the present invention provides a storage medium, which is a computer-readable storage medium, and is characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each step in the management method of the energy storage system described in any one of the above.
The management method of the energy storage system provided by the invention comprises the following steps: acquiring a current time parameter, and acquiring an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters; receiving energy data sent by an energy acquisition module, determining a planned working mode of the energy storage battery according to the energy data and energy plan parameters, and generating an energy control instruction corresponding to the planned working mode; and sending the energy control instruction to an energy management module so as to manage the energy of the energy storage battery according to the energy control instruction. Through the implementation of the scheme, the energy storage system can select the corresponding energy plan parameters according to the time parameters corresponding to the peak-valley characteristics of the power grid, manage the energy of the energy storage battery by combining the energy data, fully utilize the characteristics of the energy storage battery and effectively reduce the influence of the peak-valley characteristics of the power grid on the energy of the energy storage battery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a diagram illustrating an energy storage system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a method for managing an energy storage system according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating method steps for a charging mode of an energy storage system according to an embodiment of the present invention;
FIG. 4 is a flow chart of method steps for an energy storage system discharge mode provided in accordance with another aspect of an embodiment of the present invention;
fig. 5 is a block diagram of a management apparatus of an energy storage system according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a management circuit of the energy storage system according to an embodiment of the invention;
fig. 7 is an architecture diagram of an electronic device according to an embodiment of the invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical problem that the battery energy cannot be managed according to the peak-valley characteristics of a power grid in the prior art is solved.
In order to solve the above technical problems, the present invention provides a method, an apparatus, a circuit, an electronic device and a storage medium for managing an energy storage system.
Referring to fig. 1, an energy storage system architecture diagram is provided for an embodiment of the present invention, the energy storage system architecture is an assembled system architecture, and can be installed or assembled at a user's home or some places requiring power grid input connection. The management method of the energy storage system provided by the embodiment of the invention corresponds to an energy storage system architecture for managing the energy of the energy storage battery, the energy storage system architecture has one or more corresponding physical devices or equipment or devices, the system architecture comprises a plurality of devices, for example, the processing unit 101, the AC power grid input module 102, the AC-DC conversion charging module (ACDC)103, the energy collection module (BMS)106, the energy storage Battery 104, the DC power conversion module (DCDC)105, the AC-DC power conversion module (AC/DC)107, and the like, the processing unit 101 is respectively in communication connection with the AC-DC conversion charging module (ACDC)102, the energy collection module (BMS)106, the DC power conversion module (DCDC)105, and the AC-DC power conversion module (AC/DC)107, and the processing unit 101 can be powered by the AC power grid input module 102 to realize operation; the energy collection module (BMS)106 is further electrically connected to the energy storage battery 104 to transmit the energy data of the energy storage battery 104 to the processing unit 101 in real time, and to receive and execute the battery charging and discharging control request of the processing unit 101, thereby controlling and managing the real-time charging and discharging process of the energy storage battery 104; the alternating current power grid input module 102 is electrically connected with a power grid to realize that the power grid (national power grid) inputs power (alternating current) to the whole energy storage system; an alternating current-direct current conversion charging module (ACDC)103 is electrically connected with the alternating current power grid module and is also electrically connected with an energy storage battery 104, so that after the alternating current output by the alternating current power grid module is received by the alternating current-direct current conversion charging module 103, the alternating current is subjected to direct current power conversion, and the energy storage battery 104 is charged and stored with energy; the dc power conversion module 105 is respectively connected to the output of the energy storage battery and the output of the energy storage system or directly connected to an external device, for example, electrically connected to an external switch or a socket, and when the external electronic device needs to use power, that is, the energy storage system needs to supply power to the dc load, the dc power conversion module 105 performs power conversion on the energy stored in the energy storage battery 104, preferably, converts the dc power into a dc power with a preset power, so as to meet the power demand of the external electronic device; the ac-dc power conversion module 107 is electrically connected to the ac power grid input module 102, and is connected to the output end of the energy storage system or directly connected to an external device, and when the energy storage battery cannot output electric energy (for example, the battery is in a charging state, a protection state, or an alarm state), the ac power conversion module 107 may receive the ac power input by the ac power grid input module 102 and convert the ac power into a dc power with a predetermined power, so as to meet the power consumption requirement of the external electronic device. The processing unit 101 is an entity device with data processing and control functions, and the management method of the energy storage system provided by the embodiment of the invention is applied to the processing unit 101, so that the processing unit 101 executes a related algorithm program and manages the energy of the energy storage system by using the peak-valley characteristics of a power grid; preferably, when the power grid runs at the valley, the energy storage system controls the related energy management module, such as the ac-dc conversion charging module 102, to charge and store energy in the energy storage battery, and controls the ac-dc power conversion module 107 to convert ac power into dc power, so as to meet the normal requirements of external electronic equipment or electric appliances; when the power grid is in peak power, when the alternating current electric power of the power grid is insufficient, the energy of the energy storage battery 104 is subjected to power conversion through the direct current power conversion module 105 so as to supply or directly provide the power consumption requirement of external electronic equipment or electric appliances; the energy of the energy storage system is effectively managed by using the peak-valley characteristic of the power grid, and the characteristic of the energy storage battery 104 is fully utilized.
Referring to fig. 2, a flowchart of steps of a management method of an energy storage system according to an embodiment of the present invention is shown, where the embodiment of the present invention provides an energy storage system, where the energy storage system at least includes: the energy management system comprises a processor, an energy acquisition module and an energy management module, wherein the processor corresponds to a processing unit in an energy storage system architecture, the energy acquisition module corresponds to the energy acquisition module, and the energy management module is an integration of an alternating current-direct current conversion charging module (ACDC) and a direct current power conversion module (DCDC). Further, the processor interacts with the energy collection module and the energy management module respectively, and when the processor executes a program, the management method of the energy storage system provided by this embodiment is implemented, and the method includes:
step S201: the method comprises the steps of obtaining a current time parameter, and obtaining an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters.
Specifically, the power grid has peak power and valley power characteristics, and it can be understood that when the power grid in a certain area supplies power to each power utilization scene, because multiple users or multiple power utilization scenes in the area use power in a certain same time period, the power grid is in a peak power stage, which may cause actual power of alternating current of some users or power utilization scenes to be lower than a rated maximum input power, and when the power utilization of the users or power utilization scenes is less in a certain time period, the power grid in the area is in a valley power stage. In this embodiment, a certain unit time is divided into a plurality of unit time periods according to peak-to-valley power characteristics of a power grid, and an energy plan list is formulated for an energy storage system according to the unit time periods, where the energy plan list may include one or more energy plan parameters, and the energy plan parameters respectively correspond to the unit time periods; it can be understood that, when the current time parameter is acquired, the time period to which the current time parameter belongs is determined according to the time parameter, and the corresponding energy plan parameter is acquired from the energy plan list according to the time period. Preferably, for the way of acquiring the time parameter, the processor or the management device may be networked to acquire the current time parameter in a networked manner, or a clock device, a timing device, or a clock program is set in the processor or the management device to acquire the current time parameter, so as to improve the accuracy of the acquired time parameter, accurately select the energy plan parameter in the energy plan list, and effectively manage the entire energy storage system when the power grid has peak power and valley power.
Step S202: the energy control method comprises the steps of receiving energy data sent by an energy acquisition module, determining a planned working mode of the energy storage battery according to the energy data and energy plan parameters, and generating an energy control instruction corresponding to the planned working mode.
In this embodiment, the energy data is data acquired by the energy acquisition module in real time for the energy storage battery, such as data of energy storage amount, saturation, voltage, capacity, and the like, and after receiving the energy data sent by the energy acquisition module, the state of the energy storage battery is determined according to the energy data and energy plan parameters, where the state of the energy storage battery includes: the method comprises the following steps that a charging-free state, a chargeable state, a charging-required state and a charging-required state in real time are not needed, further, a plan working mode is determined according to the state of the energy storage battery and energy plan parameters, and when the energy storage system manages the energy storage battery, the plan working mode is used for controlling the charging time and the charging amount of the energy storage battery or controlling the discharging time and the discharging amount of the energy storage battery; further, generating an energy control command corresponding to the planned working mode; preferably, the energy planning parameters include: the energy control command is associated with the state of the energy storage battery and the energy plan parameter, and the energy control command is a control command corresponding to the energy plan parameter.
Specifically, by using the peak-valley characteristic of the power grid, the energy storage system generally selects to charge the energy storage battery at the valley power of the power grid, when the time parameter is in the valley power time period of the power grid, the energy data of the energy storage battery are obtained, and a planned working mode of the energy storage battery is determined according to the energy data and the energy planned parameter, wherein when the data such as the storage amount or the voltage of the energy storage battery is less than or equal to the energy threshold value for starting charging, the planned working mode is used for controlling the charging duration and the charging amount of the energy storage battery, the energy storage system can start charging the energy storage battery, default the charging is performed until the charging end time, or the energy storage system finishes/stops charging the energy storage battery until the storage amount of the energy storage battery is greater than or equal to the energy threshold value for finishing charging, and generates an energy; further, if the energy storage system discharge mode in the energy plan parameter is the energy storage battery discharge priority mode in the energy storage system, when the energy storage system charges the energy storage battery, the current energy data of the energy storage battery is obtained, the energy data at the moment is the energy update data after the energy storage battery is charged, when the energy update data reaches the energy threshold value for stopping charging and switching the output of the battery, the energy storage system can suspend charging the energy storage battery, an energy control instruction corresponding to the energy storage battery discharge mode is generated, and the energy storage system executes the discharge mode on the energy storage battery through a related control element; and if the energy storage system in the energy plan parameters is in a discharging priority mode by using the power grid, the energy storage battery continues to execute the charging mode, or when the energy storage data is greater than or equal to an energy threshold value for stopping charging and switching the output of the battery, the energy storage system controls the energy storage battery to execute the discharging mode according to the load requirement, generates an energy control instruction corresponding to the discharging mode in the scene, and supplies power to the load together with the power grid alternating current.
On the other hand, the energy storage system generally selects to discharge the energy storage battery at the peak power of the power grid, specifically, when the time parameter is in the peak power time of the power grid, if the energy storage system discharge mode in the energy plan parameter is the energy storage battery discharge priority mode in the energy storage system, the energy data of the energy storage battery is received, the energy storage battery state is determined according to the energy data and the energy plan parameter, when the energy data of the energy storage battery meets the energy plan parameter, for example, when the data such as the storage capacity or the voltage of the energy storage battery is greater than or equal to the energy threshold value of the battery output for stopping charging and switching, the plan working mode of the energy storage battery is determined according to the energy storage battery state and the energy plan parameter, the plan working mode is used for controlling the discharge duration and the discharge capacity of the energy storage battery, and further, the capacity control instruction corresponding, in order to suspend charging and discharging the energy storage battery in the charging mode, or to control the energy storage battery in the non-charging mode to discharge, specifically, the energy storage system will execute the discharging mode on the energy storage battery through the related control element.
Step S203: and sending the energy control instruction to an energy management module so as to manage the energy of the energy storage battery according to the energy control instruction.
In this embodiment, in the energy storage system, the energy management module is an entity device or device that performs data interaction with the processor, and the energy control instruction sent by the processor is sent to the energy management module, so that the energy management module manages the energy of the energy storage battery, for example, the processor controls the energy management module, so that the energy management module performs energy management on the energy storage battery. Specifically, the energy control command includes: the energy control command corresponding to the charging mode of the energy storage battery and the energy control command corresponding to the discharging mode of the energy storage battery; in order to easily distinguish the two energy control instructions, the energy control instruction corresponding to the charging mode of the energy storage battery is called an energy input instruction, when the energy input instruction is sent to the energy management module, the energy storage system charges the energy storage battery through the energy management module, and the charging is stopped until the energy input instruction fails; the energy control instruction corresponding to the energy storage battery discharge mode is called an energy output instruction, when the energy output instruction is sent to the energy management module, the energy storage system discharges the energy storage battery through the energy management module until the energy output instruction fails, and the energy output instruction stops discharging; it is understood that the function of the energy management module is directed to the management of the energy storage battery, and corresponds to the aforementioned ac-dc conversion charging module (ACDC) and dc-dc power conversion module (DCDC) in an energy storage system architecture, where the ac-dc conversion charging module (ACDC) is used to charge the energy storage battery, and the dc-dc power conversion module (DCDC) is used to discharge the energy storage battery. It should be noted that, when the energy management module controls the energy storage battery to perform charging according to the energy input instruction, or controls the energy storage battery to perform discharging according to the energy output instruction, if the energy management module receives an energy control instruction different from the energy input instruction, the energy management module may control the energy storage battery to end the current working state, and switch to one of discharging, charging, stopping charging, or stopping discharging. The technical characteristics of the embodiment can utilize the charging and discharging characteristics of the energy storage battery to effectively manage the energy of the energy storage battery so as to meet the characteristics of the energy storage battery on the peak electricity and the valley electricity of the power grid.
According to the management method of the energy storage system, the peak power time period and the valley power time period can be distinguished according to the peak-valley characteristics of a power grid, the corresponding time period is determined according to the acquired time parameters, the corresponding energy plan parameters in the energy plan list are selected, the energy of the energy storage battery is managed by combining energy data, and the energy control instruction of the energy storage system to the energy storage battery is determined so as to manage the energy of the energy storage battery; the characteristic of make full use of energy storage battery, according to the electric wire netting peak valley characteristic to the management and control of energy storage battery energy, charge to energy storage battery at electric wire netting valley electric time interval, discharge to energy storage battery at electric wire netting peak electric time interval to compensate the electric wire netting peak electricity time-consuming to the energy supply of user or other power consumption scenes not enough, effectively reduce the influence of electric wire netting peak valley characteristic to energy storage battery energy and user power consumption demand.
In the embodiment of the present invention, the planning operation mode includes: a charge mode and a discharge mode, the energy control command comprising: the energy input command and the energy output command are, it should be noted that the charging mode and the discharging mode refer to: the charging mode and the discharging mode of the energy storage system are characterized in that the energy storage system architecture comprises: the energy storage battery and the energy storage system manage and control the energy of the energy storage battery, and therefore, the charging mode and the discharging mode of the energy storage battery are equivalent.
Referring to fig. 3, a flowchart of method steps of a charging mode of an energy storage system according to an embodiment of the present invention is shown, where the method steps of the charging mode include:
step S301: the method comprises the steps of obtaining a current time parameter, and obtaining an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters.
Step S302: and comparing the received energy data with a preset energy reserve threshold, wherein the energy plan parameters comprise the energy reserve threshold.
Specifically, the energy plan parameters include a plurality of threshold parameters, which are threshold parameters for the energy storage system to determine whether to charge, discharge, stop charging, or stop discharging the energy storage battery, where the threshold parameters include: and comparing the energy data with the energy reserve threshold to obtain a comparison result, so that the energy storage system controls the energy storage battery according to the comparison result. By executing the step, the current state of the energy storage battery is preliminarily determined and the planned working mode of the energy storage battery is determined by utilizing the energy data and the energy plan parameters, so that the accuracy of energy management and control of the energy storage battery by the energy storage battery is improved, and the management efficiency is improved.
Step S303: and if the energy data is less than or equal to the energy storage threshold, judging that the planned working mode is the charging mode, and generating an energy input instruction corresponding to the charging mode.
In this embodiment, the energy data may be the electric quantity, voltage, saturation, or the like of the energy storage battery, and the energy storage threshold is a threshold corresponding to the energy data, preferably, the threshold may range from 30% to 40%, but is not limited thereto, and the threshold or the threshold range may be set according to the actual charging requirement. When the energy data is smaller than or equal to the energy storage threshold, the planned working mode of the energy storage battery is judged to be a charging mode, the planned working mode of the energy storage battery is accurately determined to be the charging mode through the implementation of the step, and an energy input instruction is generated to control the energy storage battery to be charged, wherein the energy input instruction relates to the control of the charging duration, the charging amount and the like of the energy storage battery.
Step S304: and sending the energy input instruction to an energy management module so as to convert the alternating current of the power grid into the direct current with preset power according to the energy input instruction, wherein the direct current is used for inputting an energy storage battery for charging.
This step S304 is executed when it is determined that the planned operating mode is the charging mode, and when the planned operating mode is the charging mode, the generated energy input instruction is sent to an energy management module, specifically, an ac-to-dc conversion charging module (ACDC) included in the energy management module, so that the ac-to-dc conversion charging module (ACDC) starts to convert the ac power of the power grid to obtain a dc power of a preset power when receiving the energy input instruction, or starts to convert the ac power of the power grid to form a path state, and the dc power is input to the energy storage battery to charge the energy storage battery.
Further, when the energy storage system is in a charging mode, receiving energy updating data sent by the energy acquisition module, and comparing the energy updating data with a preset mode conversion threshold, wherein the energy plan parameters further include the mode conversion threshold;
if the energy updating data is larger than or equal to the mode conversion threshold, changing the planned working mode into a discharging mode, and generating an energy output instruction corresponding to the discharging mode;
and if the energy updating data is smaller than the mode conversion threshold value, continuing to execute the charging mode.
In the method for charging a charging mode of an energy storage system provided in the embodiment of the present invention, when the energy storage system is executing the charging mode on the energy storage battery, the processor may obtain energy update data of the energy storage battery being charged in real time, and it can be understood that the energy update data belongs to energy data updated after the energy storage battery is charged, relative to the energy data. The mode conversion threshold is used for determining whether to switch the working state of the energy storage battery in the charging mode, and the range of the mode conversion threshold is 50% -60%, but the mode conversion threshold is not limited to this, and can be set according to the actual charging requirement or the electricity utilization requirement; specifically, when the energy storage system controls an alternating current-direct current conversion charging module (ACDC) to charge the energy storage battery, and when the energy update data is greater than or equal to the mode conversion threshold, the original charging mode of the energy storage battery is switched to a discharging mode, that is, the energy storage battery is stopped from being charged, and the discharging mode of the energy storage battery is started; further, if the energy update data is still less than the mode transition threshold, the charging mode continues to be performed. By executing the method steps defined by the embodiment, the energy storage battery in the charging mode can be managed, if the energy storage system discharging mode in the energy plan parameters is the energy storage battery discharging priority mode in the energy storage system, whether the working mode of the energy storage battery is switched can be determined according to the energy updating data and the mode conversion threshold, the energy output or the energy supply of the energy storage system is effectively improved, and the reliability is achieved.
Referring to fig. 4, a flowchart of method steps of a discharge mode of an energy storage system according to another aspect of the present embodiment is provided, where the method steps of the discharge mode include:
step S401: the method comprises the steps of obtaining a current time parameter, and obtaining an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters.
Step S402: and comparing the received energy data with a preset energy reserve threshold, wherein the energy plan parameters comprise the energy reserve threshold.
Step S403: and if the energy data is larger than the energy storage threshold, judging that the planned working mode is a discharging mode, and generating an energy output instruction corresponding to the discharging mode.
Step S402 of this embodiment is another step opposite to step S302 of the method of the energy storage system charging mode, specifically, step S402 is performed when the energy data is greater than the energy storage threshold, where the threshold is 90%, but not limited thereto, a threshold or a threshold range may be set according to an actual discharging requirement, when the energy data is greater than the threshold range, the planned operation mode of the energy storage battery is determined as a discharging mode, and an energy output instruction is generated to control the energy storage battery to discharge according to the energy output instruction, where the energy output instruction relates to controlling a discharging time, a discharging amount, and the like executed by the energy storage battery.
Step S404: and sending the energy output instruction to an energy management module so as to convert the energy of the energy storage battery into direct current with preset power according to the energy output instruction, and supplying the direct current to a direct current load for use.
In this embodiment, the method is executed when it is determined that the planned operating mode is the discharging mode, and when the planned operating mode is the discharging mode, the generated energy output instruction is sent to an energy management module, specifically, a direct current power conversion module (DCDC) included in the energy management module, so that the direct current power conversion module (DCDC) starts to perform power conversion on direct current or electric charge stored in the energy storage battery when receiving the energy output instruction, so as to turn on a switch, or in a state of forming a path, so as to obtain direct current with preset power, and the direct current is transmitted to a direct current load to supply power to the direct current load. It can be understood that, usually, when the power grid is in peak power, the energy storage battery is charged when the power grid is in valley power, the energy data of the energy storage battery usually meet energy planning parameters, and the energy storage system can control the energy storage battery to discharge, or the energy storage system utilizes the power grid alternating current to convert to obtain direct current on one hand, and controls the energy storage battery to discharge on the other hand, so as to meet the use of direct current load.
The management method of the energy storage system provided by the embodiment of the invention further comprises the following steps: and generating an alternating current power limiting instruction according to the energy plan parameters, and sending the alternating current power limiting instruction to an alternating current power module so as to convert the alternating current of the power grid into direct current with preset power according to the alternating current power limiting instruction for being used by a direct current load.
In this embodiment, when the energy storage system normally provides energy or electric energy for the dc load (power utilization scenario), in the energy plan parameters, if the energy storage system discharge mode in the energy plan parameters is the energy storage system utilization grid discharge priority mode, the energy storage system performs conversion according to the grid ac power to provide the dc load (power utilization scenario) with the dc power. Specifically, the energy storage system architecture further includes: an alternating current to direct current power conversion module (AC/DC), the energy plan parameters further comprising: the alternating current-direct current conversion limiting value is used for limiting the power of the power grid when the alternating current is converted into the direct current; further, an alternating current power limiting instruction is generated according to the energy plan parameters, and the generated alternating current power limiting instruction is sent to an alternating current/direct current power conversion module (AC/DC), so that when the alternating current power limiting instruction is received by the alternating current/direct current power conversion module (AC/DC), a switch is turned on, or in a state of forming a passage, direct current power conversion is started to be performed on the alternating current of the power grid according to a set alternating current/direct current conversion limiting value, direct current of preset power is obtained, and the direct current is transmitted to a direct current load so as to supply power to the direct current load. It can be understood that, usually at the valley of the power grid, the energy storage system charges the energy storage battery on the one hand, and the energy storage system can provide a dc power with a preset power for the power utilization scenario (dc load) on the other hand, so as to meet the usage of the dc load.
Referring to fig. 5, a block diagram of a management apparatus of an energy storage system according to an embodiment of the present invention is shown, where the management apparatus corresponds to an execution main processor of the management method of the energy storage system, and the management apparatus includes:
an obtaining module 501, configured to obtain a current time parameter, and obtain an energy plan parameter in a preset energy plan list according to the time parameter, where the energy plan list includes one or more energy plan parameters corresponding to different time parameters;
the processing module 502 is configured to receive the energy data sent by the energy acquisition module, determine a planned operating mode of the energy storage battery according to the energy data and the energy plan parameters, and generate an energy control instruction corresponding to the planned operating mode;
a sending module 503, configured to send the energy control instruction to the energy management module, so as to manage the energy of the energy storage battery according to the energy control instruction.
The invention provides a management device of an energy storage system, which comprises: the acquisition module 501, the processing module 502 and the sending module 503 can distinguish peak power and valley power time periods according to peak-valley characteristics of a power grid, determine corresponding time periods according to the time parameters acquired by the acquisition module 501, and select corresponding energy plan parameters in an energy plan list; the energy planning parameters are combined with the energy data through the processing module 502 to determine an energy control instruction of the energy storage system to the energy storage battery; the energy is sent to the energy management module through the sending module 503 to manage the energy of the energy storage battery; the characteristic of make full use of energy storage battery, according to the electric wire netting peak valley characteristic to the management and control of energy storage battery energy, charge to energy storage battery at electric wire netting valley electric time interval, discharge to energy storage battery at electric wire netting peak electric time interval to compensate the electric wire netting peak electricity time-consuming to the energy supply of user or other power consumption scenes not enough, effectively reduce the influence of electric wire netting peak valley characteristic to energy storage battery energy and user power consumption demand.
Referring to fig. 6, a management circuit diagram of an energy storage system according to an embodiment of the present invention is provided, including: the system comprises a management device 601, an energy acquisition module 606, an energy management module and an energy storage battery 604, wherein the management device 601 is respectively electrically connected with the energy acquisition module 606 and the energy management module, the energy acquisition module 606 is also electrically connected with the energy storage battery 604, and the energy management module is also electrically connected with the energy storage battery 604;
the energy acquisition module 606 is configured to acquire energy data of the energy storage battery 604 at any time;
the management device 601 is configured to obtain a current time parameter, and obtain an energy plan parameter in a preset energy plan list according to the time parameter, where the energy plan list includes one or more energy plan parameters corresponding to different time parameters; receiving energy data sent by an energy acquisition module 606, determining a planned working mode of the energy storage battery according to the energy data and energy plan parameters, and generating an energy control instruction corresponding to the planned working mode; sending an energy control instruction to an energy management module;
the energy management module is used for managing the energy of the energy storage battery according to the energy control instruction.
Specifically, in the management circuit of the energy storage system according to the embodiment of the present invention, the management circuit is an entity circuit, and includes: a processor, an energy collection module 606, an energy management module, and an energy storage battery 604, where the processor is an entity processor corresponding to the management apparatus 601 of the second aspect of the present invention, and for convenience of description, the processor is referred to as the management apparatus 601; the energy management module includes: an ac-dc conversion charging module (ACDC)603 and a dc power conversion module (DCDC)605, wherein the management circuit further comprises: alternating current power grid module 602, alternating current-direct current power conversion module (AC/DC)607, alternating current power grid module 602 is connected with the electric wire netting access end electricity, and alternating current-direct current power conversion module (AC/DC)607 is connected with management device 601 electricity. In addition to the above electrical connection (communication connection) between each device and the management apparatus 601, the present invention further includes a circuit connection relationship between each device, specifically, an AC-DC conversion charging module (ACDC)603 and a DC power conversion module (DCDC)605 are connected in series by connecting energy storage batteries 604 in series to form a series connection relationship, an AC input end of the AC-DC conversion charging module (ACDC)603 is electrically connected to the AC power grid module 602, an AC input end of the AC-DC power conversion module (AC/DC)607 is electrically connected to the AC power grid module 602, a DC output end of the DC power conversion module (DCDC)605 is electrically connected to a DC load, and a DC output end of the AC-DC power conversion module (AC/DC)607 is electrically connected to the DC load. The operation of the energy storage system is realized through the circuit structure, and the management device 601 executes a corresponding program, so as to realize the management method of the energy storage system provided by the embodiment.
Referring to fig. 7, the electronic device according to an embodiment of the present invention includes a memory 701, a processor 702, and a communication bus 703, where the communication bus 703 is respectively connected to the memory 701 and the processor in a communication manner 702, the memory 702 stores a computer program, and when the processor executes the computer program, the processor implements each step in the management method of the energy storage system.
In an exemplary embodiment, the computer program of the energy storage system management method mainly includes: acquiring a current time parameter, and acquiring an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters; receiving energy data sent by an energy acquisition module, determining a planned working mode of the energy storage battery according to the energy data and energy plan parameters, and generating an energy control instruction corresponding to the planned working mode; and sending the energy control instruction to an energy management module so as to manage the energy of the energy storage battery according to the energy control instruction. In addition, the computer program may also be divided into one or more modules, which are stored in the memory and executed by the processor to accomplish the present invention. One or more of the modules may be a series of computer program instruction segments capable of performing certain functions, the instruction segments being used to describe the execution of a computer program in a computing device. For example, the computer program may be divided into an acquisition module 501, a processing module 502 and a sending module 503 as shown in fig. 5.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
An embodiment of the present invention further provides a storage medium, where the storage medium is a computer-readable storage medium, and is characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps in the method for managing an energy storage system are implemented.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It should be noted that, for the sake of simplicity, the above-mentioned method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present invention is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no acts or modules are necessarily required of the invention.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the above description, for the management method, device, circuit, electronic device and storage medium of the energy storage system provided by the present invention, for those skilled in the art, there are variations in the specific implementation and application scope according to the idea of the embodiment of the present invention, and in summary, the content of the present specification should not be construed as limiting the present invention.
Claims (10)
1. A method of managing an energy storage system, comprising:
acquiring a current time parameter, and acquiring an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters;
receiving energy data sent by an energy acquisition module, determining a planned working mode of the energy storage battery according to the energy data and the energy plan parameters, and generating an energy control instruction corresponding to the planned working mode;
and sending the energy control instruction to an energy management module so as to manage the energy of the energy storage battery according to the energy control instruction.
2. The management method of claim 1, wherein the planned operational mode comprises: a charge mode and a discharge mode, the energy control command comprising: if the energy input instruction and the energy output instruction are received, the step of determining the planned working mode of the energy storage battery according to the energy data and the energy plan parameters and generating an energy control instruction corresponding to the planned working mode comprises the following steps:
comparing the received energy data with a preset energy reserve threshold, wherein the energy plan parameters include the energy reserve threshold;
if the energy data is less than or equal to the energy reserve threshold, determining that the planned working mode is a charging mode, and generating the energy input instruction corresponding to the charging mode;
and if the energy data is larger than the energy storage threshold, judging that the planned working mode is a discharging mode, and generating the energy output instruction corresponding to the discharging mode.
3. The method of managing according to claim 2, wherein the step of sending the energy control command to an energy management module for managing the energy of the energy storage battery according to the energy control command comprises:
and sending the energy input instruction to the energy management module so as to convert the alternating current of the power grid into the direct current with preset power according to the energy input instruction, wherein the direct current is used for inputting the energy storage battery for charging.
4. The management method of claim 3, further comprising:
when the energy storage system is in a charging mode, receiving energy updating data sent by the energy acquisition module, and comparing the energy updating data with a preset mode conversion threshold, wherein the energy plan parameters further comprise the mode conversion threshold;
if the energy updating data is larger than or equal to the mode conversion threshold, changing the planned working mode into the discharging mode, and generating the energy output instruction corresponding to the discharging mode;
and if the energy updating data is smaller than the mode conversion threshold value, continuing to execute the charging mode.
5. The management method according to claim 2 or 4, wherein when the energy storage system is in the discharging mode, the step of sending the energy control command to an energy management module to manage the energy of the energy storage battery according to the energy control command comprises:
and sending the energy output instruction to the energy management module so as to convert the energy of the energy storage battery into direct current with preset power according to the energy output instruction, and supplying the direct current to a direct current load for use.
6. The management method of claim 1, further comprising:
and generating an alternating current power limiting instruction according to the energy plan parameters, and sending the alternating current power limiting instruction to an alternating current power module so as to convert the alternating current of the power grid into direct current with preset power according to the alternating current power limiting instruction for being used by a direct current load.
7. An apparatus for managing an energy storage system, comprising:
the acquisition module is used for acquiring a current time parameter and acquiring an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters;
the processing module is used for receiving the energy data sent by the energy acquisition module, determining a planned working mode of the energy storage battery according to the energy data and the energy plan parameters, and generating an energy control instruction corresponding to the planned working mode;
and the sending module is used for sending the energy control instruction to an energy management module so as to manage the energy of the energy storage battery according to the energy control instruction.
8. A management circuit for an energy storage system, comprising: the energy management system comprises a management device, an energy acquisition module, an energy management module and an energy storage battery, wherein the management device is respectively electrically connected with the energy acquisition module and the energy management module, the energy acquisition module is also electrically connected with the energy storage battery, and the energy management module is also electrically connected with the energy storage battery;
the energy acquisition module is used for acquiring energy data of the energy storage battery at any moment;
the management device is used for acquiring a current time parameter and acquiring an energy plan parameter in a preset energy plan list according to the time parameter, wherein the energy plan list comprises one or more energy plan parameters corresponding to different time parameters; receiving energy data sent by an energy acquisition module, determining a planned working mode of the energy storage battery according to the energy data and the energy plan parameters, and generating an energy control instruction corresponding to the planned working mode; sending the energy control instruction to an energy management module;
the energy management module is used for managing the energy of the energy storage battery according to the energy control instruction.
9. An electronic device, comprising a memory, a processor and a communication bus, wherein the communication bus is respectively connected with the memory and the processor in a communication manner, and the memory stores a computer program thereon, and the processor executes the computer program to implement the steps of the method for managing an energy storage system according to any one of claims 1 to 6.
10. A storage medium which is a computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for managing an energy storage system according to any one of claims 1 to 6.
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