CN113270876A - Power balancing method, device, control chip and storage medium - Google Patents
Power balancing method, device, control chip and storage medium Download PDFInfo
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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
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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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
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Abstract
The application relates to a power balancing method, a power balancing device, a control chip and a storage medium. The method is applied to a power grid system, the power grid system comprises an energy storage device and a control chip arranged in the energy storage device, and the method comprises the following steps: acquiring rated power of the energy storage device and load power consumption power of a load in the power grid system through the control chip; determining a power difference value according to the load power consumption of the load and the rated power of the energy storage device; and adjusting the charging power or the discharging power of the energy storage device according to the power difference. By adopting the method, the stability of the output power of the power grid can be improved.
Description
Technical Field
The present application relates to the field of power system technologies, and in particular, to a power balancing method, apparatus, control chip, and storage medium.
Background
With the continuous development of power systems, the power consumption load is continuously increased, and the power consumption demand is increased.
At present, when power is supplied to a power load, usually, a power grid outputs electric energy to an energy storage device for storage, and the energy storage device supplies power to the power load according to the power load condition of the power load. Usually, the power grid transmits power to the energy storage device according to the power load condition of the power load, but the power load of the power load has fluctuation, so that the stability of the output power of the power grid is poor.
Disclosure of Invention
In view of the above, it is necessary to provide a power balancing method, device, control chip and storage medium capable of improving the stability of the output power of the power grid.
In a first aspect, the present application provides a power balancing method applied to a power grid system, the method including:
acquiring rated power of an energy storage device and load power consumption power of a load in a power grid system through a control chip;
determining a power difference value according to the load power consumption of the load and the rated power of the energy storage device;
and adjusting the charging power or the discharging power of the energy storage device according to the power difference.
In one embodiment, determining the power difference value according to the load power of the load and the rated power of the energy storage device includes:
determining target power according to a preset power coefficient and the rated power of the energy storage device;
and (4) making a difference between the load power consumption of the load and the target power, and determining a power difference value.
In one embodiment, adjusting the charging power or the discharging power of the energy storage device according to the power difference comprises:
comparing the load power consumption of the load with the rated power of the energy storage device to obtain a comparison result;
and adjusting the charging power or the discharging power of the energy storage device according to the comparison result and the power difference value.
In one embodiment, adjusting the charging power or the discharging power of the energy storage device according to the comparison result and the power difference comprises:
if the comparison result shows that the load power consumption of the load is greater than the rated power of the energy storage device, adjusting the discharge power of the energy storage device according to the power difference;
and if the comparison result shows that the load power consumption of the load is less than the rated power of the energy storage device, adjusting the charging power of the energy storage device according to the power difference.
In one embodiment, the power balancing method further comprises:
detecting the charge amount of the energy storage device;
judging whether the charge quantity of the energy storage device is out of a preset charge quantity range or not;
and if the electric charge amount of the energy storage device is out of the preset electric charge amount range, returning to execute the step of determining the power difference value according to the load electric power and the rated power of the energy storage device.
In one embodiment, the method further comprises the following steps: acquiring power supply power output by a power grid in a power grid system in a historical time period;
determining a corrected power coefficient according to the power supply power output by the power grid in the historical time period;
and taking the corrected power coefficient as a new preset power coefficient, and executing the step of determining the target power according to the preset power coefficient and the rated power of the energy storage device.
In one embodiment, determining the modified power factor according to the power supplied by the grid during the historical time period includes:
adding and averaging the power supply power output by the power grid corresponding to each moment in the historical time period to obtain average power;
and determining a corrected power coefficient according to the average power and the rated power of the energy storage device.
In a second aspect, the present application provides a power balancing apparatus comprising:
the acquisition module is used for acquiring the rated power of the energy storage device and the load power consumption power of the load in the power grid system through the control chip;
the determining module is used for determining a power difference value according to the load power consumption of the load and the rated power of the energy storage device;
and the adjusting module is used for adjusting the charging power or the discharging power of the energy storage device according to the power difference value.
In a third aspect, the present application provides a control chip, which includes a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the method in any one of the above first aspect when executing the computer program.
In a fourth aspect, the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method in any of the embodiments of the first aspect described above.
According to the power balancing method, the device, the control chip and the storage medium, the rated power of the energy storage device and the load power consumption power of the load in the power grid system are obtained through the control chip, the power difference value is determined according to the load power consumption power of the load and the rated power of the energy storage device, and the charging power or the discharging power of the energy storage device is adjusted according to the power difference value. The energy storage device can be controlled to charge or discharge according to the relation between the load power consumption of the load and the rated power of the energy storage device, and the power supply power is in a stable state while the load power consumption requirement of the load is met. Meanwhile, the equipment utilization rate of the energy storage device is improved.
Drawings
FIG. 1 is a diagram of an exemplary power balancing method;
FIG. 2 is a flow diagram illustrating a power balancing method according to one embodiment;
FIG. 3 is a flow chart illustrating a power balancing method according to another embodiment;
FIG. 4 is a flow chart illustrating a power balancing method according to another embodiment;
FIG. 5 is a flow chart illustrating a power balancing method according to another embodiment;
FIG. 6 is a flow chart illustrating a power balancing method according to another embodiment;
FIG. 7 is a flow chart illustrating a power balancing method in accordance with another embodiment;
FIG. 8 is a flow chart illustrating a power balancing method in accordance with another embodiment;
FIG. 9 is a flow chart illustrating a power balancing method in accordance with another embodiment;
FIG. 10 is a block diagram of a power balancing apparatus in one embodiment;
fig. 11 is a block diagram of a power balancing apparatus in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The power balancing method provided by the application can be applied to a power grid system as shown in fig. 1. The power grid system comprises: a power grid 11, an energy storage device 12, a bus 13 and a load 14; the power grid 11, the energy storage device 12 and the load 14 are all connected with the bus 13; the grid 11 may provide electrical energy to the energy storage device 12 via the bus 13 for storage, and the energy storage device 12 may provide electrical energy to a load via the bus 13. The energy storage device 12 includes a control chip 121. The control chip 121 can obtain the power data of the power grid, the energy storage device and the load in real time, and adjust the power supply power of the power grid according to the power data, so that the power supply power of the power grid is kept stable. The control chip may be implemented by a Micro Control Unit (MCU) chip, a dsp (digital Signal processing) chip, or a Field Programmable Gate Array (FPGA) chip, which is not limited herein.
In an embodiment, as shown in fig. 2, a power balancing method is provided and applied to a power grid system, where the power grid system includes an energy storage device and a control chip disposed in the energy storage device, and the application of the method to the control chip in fig. 1 is described as an example, and includes the following steps:
and S202, acquiring the rated power of the energy storage device and the load power consumption power of the load in the power grid system through the control chip.
Specifically, in the normal operation of the power grid system, a control chip arranged on the energy storage device monitors the power supply power of the power grid, the load power consumption power of the load and the charge-discharge state of the energy storage device in real time, and obtains the power supply power of the power grid, the load power consumption power of the load and the rated power of the energy storage device at the same time.
And S204, determining a power difference value according to the load power consumption of the load and the rated power of the energy storage device.
Specifically, after the control chip obtains the load power of the load and the rated power of the energy storage device, the control chip may perform a difference between the load power of the load and the rated power of the energy storage device to determine a power difference. For example, the power difference may be determined by subtracting the rated power of the energy storage device from the load power of the load, or may be determined by subtracting the load power of the load from the rated power of the energy storage device. The proportional relation between the rated power and the power supply power in a balanced state can be determined, X% rated power is preset to be equal to the power supply power, and then the power difference value is determined by the difference between the X% rated power and the load power consumption of the load.
And S206, adjusting the charging power or the discharging power of the energy storage device according to the power difference.
Specifically, the positive and negative of the power difference value may be determined, the rated power of the energy storage device is subtracted from the load power consumption of the load, and when the power difference value is determined, if the power difference value is positive, the energy storage device is adjusted to discharge, and the power difference value is used as the discharge power; and if the power difference value is negative, adjusting the energy storage device to charge, and taking the absolute value of the power difference value as the magnitude of the charging power. Or comparing the load power consumption of the load with the rated power of the energy storage device, if the load power consumption of the load is greater than the rated power of the energy storage device, controlling the energy storage device to discharge, and adjusting the discharge power to be a power difference value; and if the load power of the load is less than the rated power of the energy storage device, controlling the energy storage device to charge, and adjusting the charging power to be a power difference value without limitation.
In this embodiment, the rated power of the energy storage device and the load power consumption of the load in the power grid system are obtained through the control chip, a power difference value is determined according to the load power consumption of the load and the rated power of the energy storage device, and the charging power or the discharging power of the energy storage device is adjusted according to the power difference value. The energy storage device can be controlled to charge or discharge according to the relation between the load power consumption of the load and the rated power of the energy storage device, and the power supply power is relatively in a stable state while the load power consumption requirement of the load is met. Meanwhile, the equipment utilization rate of the energy storage device is improved.
The foregoing embodiments have described the power balancing method, and now an embodiment is further described for determining the power difference value in the power balancing method, in an embodiment, as shown in fig. 3, the determining the power difference value according to the load power consumption of the load and the rated power of the energy storage device includes:
and S302, determining target power according to a preset power coefficient and the rated power of the energy storage device.
The target power may be a power when the power supply power of the power grid reaches a balance.
For example, when the power supply provided by the power grid is in a stable state, the power supply and the rated power of the energy storage device have a linear relationship, so that the power supply can be set to be a stable output power of 50% of the rated power of the energy storage device, that is, the target power can be set to be 50% of the rated power of the energy storage device; it is also possible to set the power rating of the energy storage device to 60%, without limitation. I.e. the target power may be set to 60% of the rated power of the energy storage device. The preset power coefficient may be set to 30%, 50%, 60%, etc., and is not limited herein.
And S304, subtracting the load power consumption of the load from the target power, and determining a power difference value.
Specifically, the target power is subtracted from the load power consumption of the load, and a power difference value is determined.
In this embodiment, a target power is determined according to a preset power coefficient and a rated power of the energy storage device, and a power difference value is determined by subtracting a load power consumption power of a load from the target power. The power difference value between the load power consumption of the load and the target power in the preset power supply power stable state can be determined.
The above embodiments describe how to determine the power difference, and now describe how to adjust the charging power and the discharging power of the energy storage device after determining the power difference, in one embodiment, as shown in fig. 4, the adjusting the charging power or the discharging power of the energy storage device according to the power difference includes:
s402, comparing the load power consumption of the load with the rated power of the energy storage device to obtain a comparison result.
Specifically, the comparison result that the load power consumption is greater than the rated power of the energy storage device or the load power consumption is less than the rated power of the energy storage device can be obtained by comparing whether the load power consumption of the load is greater than the rated power of the energy storage device or not; or making a difference between the load power consumption of the load and the rated power of the energy storage device, and comparing whether the difference is greater than 0 to obtain a comparison result, wherein the load power consumption is greater than the rated power of the energy storage device, or, if the difference is less than 0, the load power consumption is less than the rated power of the energy storage device; the power consumption of the load and the rated power of the energy storage device can be subjected to quotient, whether the quotient is larger than 1 or not is compared, if the quotient is larger than 1, the power consumption of the load is larger than the rated power of the energy storage device according to the comparison result, or if the quotient is smaller than 1, the power consumption of the load is smaller than the rated power of the energy storage device, and no limitation is imposed.
And S404, adjusting the charging power or the discharging power of the energy storage device according to the comparison result and the power difference value.
Specifically, according to the comparison result, the energy storage device is controlled to discharge or supply power, and then the discharge power required to discharge or the supply power during power supply is adjusted to a power difference.
Further, as shown in fig. 5, adjusting the charging power or the discharging power of the energy storage device according to the comparison result and the power difference includes:
and S502, if the comparison result shows that the load power consumption of the load is greater than the rated power of the energy storage device, adjusting the discharge power of the energy storage device according to the power difference.
Specifically, if the power consumption of the load is greater than the rated power of the energy storage device, the energy storage device is controlled to discharge, and the power difference is used as the discharge power.
And S504, if the comparison result shows that the load power consumption of the load is less than the rated power of the energy storage device, adjusting the charging power of the energy storage device according to the power difference.
Specifically, if the load power of the load is less than the rated power of the energy storage device, the energy storage device is controlled to be charged, and the power difference is used as the magnitude of the charging power.
In this embodiment, the load power consumption of the load is compared with the rated power of the energy storage device to obtain a comparison result, and the charging power or the discharging power of the energy storage device is adjusted according to the comparison result and the power difference. The method can accurately determine whether the energy storage device needs to be charged or discharged so as to meet the load power consumption of the load, and further balance the power supply power of the power grid.
The foregoing embodiment describes a power balancing method, and when it is necessary to control an energy storage device to charge or discharge, it is further necessary to consider an operating state of the energy storage device, and whether to discharge or charge is performed, which is now described with reference to an embodiment, and in an embodiment, as shown in fig. 6, the power balancing method further includes:
and S602, detecting the charge quantity of the energy storage device.
Specifically, when the power grid system normally operates, the control chip of the energy storage device detects the amount of charge in the energy storage device in real time.
S604, whether the charge amount of the energy storage device is out of the preset charge amount range is judged.
Specifically, the preset charge amount range is a range between a maximum charge amount that the energy storage device can discharge and a minimum charge amount that needs to be charged. For example, if the preset charge amount range is 300 to 1000 coulombs, it may be determined whether the charge amount of the energy storage device detected when the energy storage device needs to be discharged is less than 300, or the charge amount of the energy storage device detected when the energy storage device needs to be charged is greater than 1000.
And S606, if the electric charge amount of the energy storage device is out of the preset electric charge amount range, returning to execute the step of determining the power difference value according to the load electric power and the rated power of the energy storage device.
Specifically, if the charge amount of the energy storage device is outside the preset charge amount range, that is, the charge amount of the energy storage device detected when the energy storage device needs to discharge is smaller than the maximum charge amount capable of discharging, the step of determining the power difference value according to the load power and the rated power of the energy storage device is returned to be executed. Or when the energy storage device needs to be charged again, the detected charge amount of the energy storage device is larger than the minimum charge amount needing to be charged, and the step of determining the power difference value according to the power consumption of the load and the rated power of the energy storage device is returned to be executed.
In this embodiment, whether the charge amount of the energy storage device is outside the preset charge amount range is determined by detecting the charge amount of the energy storage device, and if the charge amount of the energy storage device is outside the preset charge amount range, the step of determining the power difference value according to the power consumption of the load and the rated power of the energy storage device is performed. The charge quantity in the energy storage device can be guaranteed to be charged or discharged, and the normal operation of a power grid system is guaranteed.
The foregoing embodiment describes a power balancing method, and during power balancing, the power supply power may be continuously corrected, so that the power supply power can better supply power to the load under a relatively stable condition, and how to correct the power supply power is described with an embodiment, in an embodiment, as shown in fig. 7, the power balancing method further includes:
s702, acquiring the power supply power output by the power grid in the power grid system in the historical time period.
Specifically, the control chip can correspondingly store the power supply power output by the power grid when acquiring the power supply power output by the power grid in real time, and when the preset time arrives, the stored power supply power output by the power grid within the historical time period is acquired. The historical time period may include 1 day, 0.5 day, and 2 days, which is not limited herein.
And S704, determining a corrected power coefficient according to the power supply power output by the power grid in the historical time period.
Specifically, the control chip can correspondingly store the power supply power output by the power grid when acquiring the power supply power in real time, and when the preset time is up, the control chip can perform certain mathematical calculation on the power supply power stored in the historical time period, determine the power supply power required to be corrected, and further determine the corrected power coefficient. The preset time may be every hour, every day, every week, and is not limited herein.
Alternatively, a time-power supply curve may be drawn according to the power supply output by the power grid in the historical time period and corresponding respective time.
Further, as shown in fig. 8, determining the modified power coefficient according to the power supply output by the power grid in the historical time period includes:
and S802, adding and averaging the power supply power output by the power grid corresponding to each moment in the historical time period to obtain average power.
Specifically, taking the historical time period as the past day as an example, 1 day may be divided into 24 times, the power supply powers output by the power grids corresponding to the 24 times are summed, and then averaged, so as to obtain an average power of the power supply powers at the 24 times.
And S804, determining a corrected power coefficient according to the average power and the rated power of the energy storage device.
Specifically, since the average power is the power stably output by the preset power supply power at the current moment, at this time, the average power and the rated power of the energy storage device have a linear relationship, and the rated power can be divided by the average power to determine the corrected power coefficient.
And S706, taking the corrected power coefficient as a new preset power coefficient, and executing the step of determining the target power according to the preset power coefficient and the rated power of the energy storage device.
Specifically, the determined correction power coefficient is determined as a new preset power coefficient, and the step of determining the target power according to the preset power coefficient and the rated power of the energy storage device is executed.
In this embodiment, the power supply power output by the power grid in the power grid system in the historical time period is acquired, the corrected power coefficient is determined according to the power supply power output by the power grid in the historical time period, the corrected power coefficient is used as a new preset power coefficient, and the step of determining the target power according to the preset power coefficient and the rated power of the energy storage device is executed. The power supply power in the power balance method can be corrected at regular time, and the load power consumption of the load is met under the condition that the power supply power is ensured to be stable.
To facilitate understanding by those skilled in the art, the power balancing method will be further described in an embodiment, as shown in fig. 9, the power balancing method includes:
and S901, acquiring the rated power of the energy storage device and the load power consumption power of the load in the power grid system through a control chip.
And S902, determining the target power according to the preset power coefficient and the rated power of the energy storage device.
And S903, subtracting the load power consumption power of the load from the target power, and determining a power difference value.
And S904, comparing the load power of the load with the rated power of the energy storage device to obtain a comparison result.
And S905, detecting the charge quantity of the energy storage device.
And S906, judging whether the charge amount of the energy storage device is out of a preset charge amount range. And if the electric charge amount of the energy storage device is out of the preset electric charge amount range, returning to execute the step of determining the power difference value according to the load electric power and the rated power of the energy storage device.
And S907, if the comparison result shows that the load power consumption of the load is greater than the rated power of the energy storage device, adjusting the discharge power of the energy storage device according to the power difference.
And S908, if the comparison result shows that the load power consumption of the load is less than the rated power of the energy storage device, adjusting the charging power of the energy storage device according to the power difference.
And S909, acquiring the power supply power output by the power grid in the power grid system in the historical time period.
S910, power supply power output by the power grid corresponding to each moment in the historical time period is added and averaged to obtain average power.
And S911, determining a corrected power coefficient according to the average power and the rated power of the energy storage device.
And S912, taking the corrected power coefficient as a new preset power coefficient, and executing the step of determining the target power according to the preset power coefficient and the rated power of the energy storage device.
In this embodiment, the rated power of the energy storage device and the load power consumption of the load in the power grid system are obtained through the control chip, a power difference value is determined according to the load power consumption of the load and the rated power of the energy storage device, and the charging power or the discharging power of the energy storage device is adjusted according to the power difference value. The energy storage device can be controlled to charge or discharge according to the relation between the load power consumption of the load and the rated power of the energy storage device, so that the power supply power is relatively in a stable state while the load power consumption requirement of the load can be met. Meanwhile, the equipment utilization rate of the energy storage device is improved.
It should be understood that although the various steps in the flow charts of fig. 2-9 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-9 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 10, there is provided a power balancing apparatus including:
the acquiring module 101 is configured to acquire a rated power of the energy storage device and a load power consumption power of a load in the power grid system through the control chip;
the determining module 102 is configured to determine a power difference according to the load power consumption of the load and the rated power of the energy storage device;
and the adjusting module 103 is configured to adjust the charging power or the discharging power of the energy storage device according to the power difference.
In this embodiment, the obtaining module controls the chip to obtain a rated power of the energy storage device and a load power consumption of a load in the power grid system, the determining module determines a power difference value according to the load power consumption of the load and the rated power of the energy storage device, and the adjusting module adjusts a charging power or a discharging power of the energy storage device according to the power difference value. The energy storage device can be controlled to charge or discharge according to the relation between the load power consumption of the load and the rated power of the energy storage device, and the power supply power is relatively in a stable state while the load power consumption requirement of the load is met. Meanwhile, the equipment utilization rate of the energy storage device is improved.
In one embodiment, as shown in fig. 11, the determining module 102 includes:
a first determining unit 1021, configured to determine a target power according to a preset power coefficient and a rated power of the energy storage device;
the second determining unit 1022 is configured to determine a power difference by subtracting the load power consumption of the load from the target power.
In one embodiment, referring to fig. 11, the adjustment module 103 includes:
the comparison unit 1031 is configured to compare the load power consumption of the load with the rated power of the energy storage device to obtain a comparison result;
and an adjusting unit 1032 configured to adjust the charging power or the discharging power of the energy storage device according to the comparison result and the power difference.
In an embodiment, the adjusting unit is specifically configured to adjust the discharge power of the energy storage device according to the power difference if the comparison result shows that the load power consumption of the load is greater than the rated power of the energy storage device; and if the comparison result shows that the load power consumption of the load is less than the rated power of the energy storage device, adjusting the charging power of the energy storage device according to the power difference.
In one embodiment, referring to fig. 11, the power balancing apparatus further includes:
a detection module 104 for detecting an amount of charge of the energy storage device;
the judging module 105 is configured to judge whether the charge amount of the energy storage device is outside a preset charge amount range;
and the first executing module 106 is configured to, if the charge amount of the energy storage device is outside the preset charge amount range, return to executing the step of determining the power difference according to the load power consumption and the rated power of the energy storage device.
In one embodiment, referring to fig. 11, the power balancing apparatus further includes:
a power supply power obtaining module 107, configured to obtain power supply power output by a power grid in a power grid system in a historical time period;
a modified power coefficient determination module 108, configured to determine a modified power coefficient according to the power supply power output by the power grid in the historical time period;
and a second executing module 109, configured to use the corrected power coefficient as a new preset power coefficient, and execute the step of determining the target power according to the preset power coefficient and the rated power of the energy storage device.
In one embodiment, referring to fig. 11, the modified power factor determination module 108 includes:
the averaging unit 1081 is configured to average the power supply powers output by the power grid at each time within the historical time period after summing up the power supply powers, so as to obtain an average power;
and a third determining unit 1082, configured to determine the modified power coefficient according to the average power and a rated power of the energy storage device.
For specific limitations of the power balancing apparatus, reference may be made to the above limitations of the power balancing method, which are not described herein again. The modules in the power balancing device can be wholly or partially implemented by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a control chip is provided, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above method embodiments when executing the computer program.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A power balancing method is applied to a power grid system, and the power grid system comprises an energy storage device and a control chip arranged in the energy storage device, and the method comprises the following steps:
acquiring rated power of the energy storage device and load power consumption power of a load in the power grid system through the control chip;
determining a power difference value according to the load power consumption of the load and the rated power of the energy storage device;
and adjusting the charging power or the discharging power of the energy storage device according to the power difference.
2. The method of claim 1, wherein determining a power difference based on the load power of the load and the power rating of the energy storage device comprises:
determining target power according to a preset power coefficient and the rated power of the energy storage device;
and subtracting the load power consumption of the load from the target power, and determining the power difference value.
3. The method of claim 1, wherein the adjusting the charging power or the discharging power of the energy storage device according to the power difference comprises:
comparing the load power consumption of the load with the rated power of the energy storage device to obtain a comparison result;
and adjusting the charging power or the discharging power of the energy storage device according to the comparison result and the power difference value.
4. The method of claim 3, wherein adjusting the charging power or the discharging power of the energy storage device according to the comparison result and the power difference comprises:
if the comparison result shows that the load power consumption of the load is greater than the rated power of the energy storage device, adjusting the discharge power of the energy storage device according to the power difference;
and if the comparison result shows that the load power consumption of the load is less than the rated power of the energy storage device, adjusting the charging power of the energy storage device according to the power difference.
5. The method according to any one of claims 1-3, further comprising:
detecting an amount of charge of the energy storage device;
judging whether the charge quantity of the energy storage device is out of a preset charge quantity range or not;
and if the electric charge amount of the energy storage device is out of the preset electric charge amount range, returning to execute the step of determining the power difference value according to the electric power used by the load and the rated power of the energy storage device.
6. The method of claim 2, further comprising:
acquiring power supply power output by a power grid in the power grid system within a historical time period;
determining a correction power coefficient according to the power supply power output by the power grid in the historical time period;
and taking the corrected power coefficient as a new preset power coefficient, and executing the step of determining the target power according to the preset power coefficient and the rated power of the energy storage device.
7. The method of claim 6, wherein determining a modified power factor from the grid-output supply power over the historical time period comprises:
adding and averaging the power supply power output by the power grid corresponding to each moment in the historical time period to obtain average power;
and determining the corrected power coefficient according to the average power and the rated power of the energy storage device.
8. A power balancing apparatus, the apparatus comprising:
the acquisition module is used for acquiring the rated power of the energy storage device and the load power consumption power of the load in the power grid system through the control chip;
the determining module is used for determining a power difference value according to the load power consumption of the load and the rated power of the energy storage device;
and the adjusting module is used for adjusting the charging power or the discharging power of the energy storage device according to the power difference value.
9. A control chip comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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