CN117200299B - Power control method and device of energy storage battery and electronic equipment - Google Patents
Power control method and device of energy storage battery and electronic equipment Download PDFInfo
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Abstract
The invention discloses a power control method and device of an energy storage battery and electronic equipment. Wherein the method comprises the following steps: responding to a discharge power control request of the energy storage battery, and calling a peak electricity utilization period corresponding to a target day; determining a target control period according to the current time and the peak power consumption period; determining a predicted power consumption corresponding to the target control period according to the predicted power consumption corresponding to the target control period; comparing the predicted electricity consumption with the energy storage electricity of the energy storage battery to obtain a comparison result; determining the discharge power of the energy storage battery according to the comparison result; and controlling the energy storage battery to discharge at the discharge power. The invention solves the technical problem of high user electricity consumption cost when the user uses electricity in the peak electricity consumption period in the related technology.
Description
Technical Field
The present invention relates to the field of energy storage batteries, and in particular, to a power control method and apparatus for an energy storage battery, and an electronic device.
Background
With the rapid development of photovoltaic solar energy, the problem of electric quantity fluctuation during power generation is further aggravated, the difference value of peak-to-valley electricity prices is gradually increased, and the peak-to-valley electricity price difference value of work and business in certain areas exceeds one-element/degree electricity, so that the photovoltaic solar energy power generation system has wide application prospect, the energy storage battery can charge low-price electricity when the electricity price is valley, and discharge when the electricity price is peak, thereby ensuring that users use the low-price electricity as much as possible, and greatly reducing the electricity consumption cost.
However, with the related method provided in the related art, there is a problem in that the user electricity cost is high when the user uses electricity in the peak electricity use period.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides a power control method and device of an energy storage battery and electronic equipment, which at least solve the technical problem that in the related art, when a user uses electricity in a peak electricity consumption period, the electricity consumption cost of the user is high.
According to an aspect of an embodiment of the present invention, there is provided a power control method of an energy storage battery, including: responding to an energy storage battery discharge power control request, and calling a peak electricity consumption period corresponding to a target day, wherein the energy storage battery discharge power control request carries the target day, the energy storage battery discharge power control request is used for requesting to determine the discharge power of an energy storage battery in the target control period corresponding to the target day, and the energy storage electric quantity in the energy storage battery is the electric quantity stored in the valley electricity consumption period; determining the target control period according to the current time and the peak power consumption period; determining a predicted power consumption corresponding to the target control period according to the predicted power consumption corresponding to the target control period; comparing the predicted electricity consumption with the energy storage electricity of the energy storage battery to obtain a comparison result; determining the discharge power of the energy storage battery according to the comparison result; and controlling the energy storage battery to discharge at the discharge power.
Optionally, the determining the discharge power of the energy storage battery according to the comparison result includes: and under the condition that the predicted electricity consumption is larger than the energy storage electricity consumption, determining the minimum value of the actual electricity consumption power corresponding to the current time and the performance discharge power corresponding to the energy storage battery as the discharge power.
Optionally, the determining the discharge power of the energy storage battery according to the comparison result includes: and under the condition that the predicted electricity consumption is smaller than or equal to the energy storage electricity consumption, determining the minimum value of the actual electricity consumption power corresponding to the current time and the maximum discharge power corresponding to the energy storage battery as the discharge power.
Optionally, before determining the predicted power consumption corresponding to the target control period according to the predicted power consumption corresponding to the target control period, the method further includes: calling an electricity utilization function corresponding to the target day; and determining the predicted electric power respectively corresponding to the target control time periods according to the electric function.
Optionally, before the calling the power utilization function corresponding to the target day, the method further includes: determining historical electricity utilization data of a plurality of preset days, wherein the preset days respectively correspond to different date attributes, and the preset days have preset days with corresponding date attributes identical to the date attributes corresponding to the target days; and obtaining electricity utilization functions respectively corresponding to the plurality of preset days according to the historical electricity utilization data, wherein the target days are included in the plurality of preset days.
Optionally, the determining the target control period according to the current time and the peak electricity consumption period includes: and under the condition that the control request of the discharge power of the energy storage battery also carries control frequency, determining the target control period according to the current time and the peak power utilization period by using the control frequency.
Optionally, after the controlling the energy storage battery to discharge with the discharge power, the method further includes: acquiring update time; and under the condition that the updating time belongs to the valley electricity utilization period, controlling the energy storage battery to store electricity with charging power.
According to an aspect of an embodiment of the present invention, there is provided a power control device of an energy storage battery, including: the system comprises an energy storage battery discharging power control request, a retrieving module and a storage battery, wherein the energy storage battery discharging power control request is used for requesting to determine the discharging power of the energy storage battery in a target control period corresponding to a target day, and the energy storage electric quantity in the energy storage battery is the electric quantity stored in a valley electric consumption period; the first determining module is used for determining the target control period according to the current time and the peak power consumption period; a second determining module, configured to determine a predicted power consumption corresponding to the target control period according to the predicted power consumption corresponding to the target control period; the comparison module is used for comparing the predicted electricity consumption with the energy storage electricity quantity of the energy storage battery to obtain a comparison result; the third determining module is used for determining the discharge power of the energy storage battery according to the comparison result; and the control module is used for controlling the energy storage battery to discharge at the discharge power.
According to an aspect of an embodiment of the present invention, there is provided an electronic apparatus including: a processor; a memory for storing the processor-executable instructions; wherein the processor is configured to execute the instructions to implement the method of controlling power of an energy storage battery of any of the above.
According to an aspect of an embodiment of the present invention, there is provided a computer-readable storage medium, which when executed by a processor of an electronic device, causes the electronic device to perform the method of controlling power of an energy storage battery of any one of the above.
In the embodiment of the invention, a peak electricity consumption period corresponding to a target day is called in response to an energy storage battery discharge power control request, wherein the energy storage battery discharge power control request carries the target day, the energy storage battery discharge power control request is used for requesting to determine the discharge power of an energy storage battery in the target control period corresponding to the target day, and the energy storage electric quantity in the energy storage battery is the electric quantity stored in the valley electricity consumption period. Determining a target control period according to the current time and the peak power consumption period, determining the predicted power consumption corresponding to the target control period according to the predicted power consumption corresponding to the target control period, comparing the predicted power consumption with the stored power of the energy storage battery to obtain a comparison result, determining the discharge power of the energy storage battery according to the comparison result, and controlling the energy storage battery to discharge at the discharge power. Because the electric quantity of the energy storage battery is the electric quantity stored in the valley electricity consumption period, namely, the energy storage electric quantity of the energy storage battery is stored through the valley electricity consumption period, on one hand, the energy storage battery can be used for controlling the discharge power of the follow-up energy storage battery, on the other hand, the electric quantity can be supplied to a user in the peak electricity consumption period, so that the user uses low-price electricity as much as possible in the peak electricity consumption period, and further, the technical problem that in the related technology, the user has high electricity consumption cost when the user uses electricity in the peak electricity consumption period is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a flowchart of a power control method of an energy storage battery according to an embodiment of the present invention;
FIG. 2 is a system frame diagram of a centralized control system for station building type optical storage and cooling provided by an alternative embodiment of the present invention;
fig. 3 is a block diagram of a power control apparatus of an energy storage battery according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present invention, there is provided an embodiment of a method of controlling power of an energy storage battery, it being noted that the steps shown in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.
Fig. 1 is a flowchart of a power control method of an energy storage battery according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:
step S102, a peak electricity consumption period corresponding to a target day is called in response to an energy storage battery discharge power control request, wherein the energy storage battery discharge power control request carries the target day, the energy storage battery discharge power control request is used for requesting to determine the discharge power of the energy storage battery in the target control period corresponding to the target day, and the energy storage electric quantity in the energy storage battery is the electric quantity stored in the valley electricity consumption period;
in the providing step S102, in response to the power control request of the discharging power of the energy storage battery, the power control request of the discharging power of the energy storage battery carries a target day, and the peak power consumption period corresponding to the power control request of the discharging power of the energy storage battery is called according to the target day.
Step S104, determining a target control period according to the current time and the peak power consumption period;
in the providing step S104, the current time may refer to a specific time of the peak electricity consumption period corresponding to the target day, and the peak electricity consumption period may be a preset time range or may be determined by calculation according to historical data, which is not limited herein, and may be set in a self-defining manner according to a specific scenario and application.
It should be noted that, for the above steps, assuming that the target day is tuesday, the peak electricity consumption period corresponding to tuesday is 7 pm to 12 pm, the current time is selected to be 9 pm in the peak electricity consumption period, and the target control period may be determined to be 9 pm to 12 pm based on the current time being 9 pm and the peak electricity consumption period being 7 pm to 12 pm. The determined target control period can be used for subsequent discharge power control to ensure that the energy storage battery can adapt to the current power demand.
Step S106, determining the predicted electricity consumption corresponding to the target control period according to the predicted electricity consumption corresponding to the target control period;
in the step S106, the predicted power consumption is obtained by obtaining the predicted power consumption in the target control period, and the predicted power consumption corresponding to the target control period is further determined based on the predetermined power consumption in the target control period. By predicting the power consumption, the power consumption demand of the target control period can be predicted, the energy storage battery can be helped to moderately discharge in the peak power consumption period, and the energy storage battery can be helped to make a reasonable discharge control decision so as to reduce the pressure on the power grid and balance the load of the power grid.
Step S108, comparing the predicted electricity consumption with the energy storage electricity of the energy storage battery to obtain a comparison result;
in the step S108 provided in the present application, the stored energy capacity of the energy storage battery may be an energy capacity stored in a valley electricity consumption period, and the comparison result may be obtained by comparing the predetermined electricity consumption with the stored energy capacity of the energy storage battery: and if the predicted electricity consumption is less than or equal to the energy storage electricity consumption of the energy storage battery, the energy of the energy storage battery is enough to meet the electricity consumption requirement of the target control period. The comparison result is "satisfied"; if the predicted power consumption is greater than the stored power of the energy storage battery, the energy of the energy storage battery is insufficient to meet the power consumption requirement of the target control period. If the comparison result is 'unsatisfied', finally, carrying out corresponding subsequent processing according to the comparison result, and if the comparison result is satisfied, carrying out discharge control of the energy storage battery; if not, other regulation strategies may need to be considered, such as charging of a battery, harvesting of electrical energy from a power grid, etc.
It should be noted that, through the above-mentioned comparison result of the predicted electricity consumption and the energy storage electricity consumption of the energy storage battery, it can be determined whether the electricity consumption requirement of the target control period is satisfied sufficiently, which is helpful to perform reasonable electricity allocation and optimize the operation of the energy storage battery to a certain extent.
Step S110, determining the discharge power of the energy storage battery according to the comparison result;
in the step S110 provided in the present application, according to the comparison result between the predetermined power consumption and the stored power of the energy storage battery determined in the previous step, the discharge power of the energy storage battery may be further determined, and specifically how to determine the discharge power of the energy storage battery, and the discharge power of the energy storage battery needs to be adjusted accordingly according to the specific comparison result.
It should be noted that, through the above steps, the discharging power of the energy storage battery can be determined according to the comparison result, so as to ensure that the energy storage battery provides enough electric quantity to meet the electricity demand of the user in the target control period, which is helpful for balancing the electricity demand.
Step S112, the energy storage battery is controlled to discharge with the discharge power.
In the providing step S112, according to the discharge power of the energy storage battery determined in the previous step, the discharge power may be input into the energy storage battery management system, and a corresponding discharge control policy is performed to control the energy storage battery to discharge with the discharge power. Through the steps, the energy storage battery can be ensured to be discharged normally according to the set discharge power, the electric quantity of the energy storage battery can be effectively utilized to a certain extent, and the assessment of electricity consumption requirements is facilitated.
Through the steps, the peak electricity consumption period corresponding to the target day is called in response to the energy storage battery discharge power control request, wherein the energy storage battery discharge power control request carries the target day, the energy storage battery discharge power control request is used for requesting to determine the discharge power of the energy storage battery in the target control period corresponding to the target day, and the energy storage electric quantity in the energy storage battery is the electric quantity stored in the valley electricity consumption period. Determining a target control period according to the current time and the peak power consumption period, determining the predicted power consumption corresponding to the target control period according to the predicted power consumption corresponding to the target control period, comparing the predicted power consumption with the stored power of the energy storage battery to obtain a comparison result, determining the discharge power of the energy storage battery according to the comparison result, and controlling the energy storage battery to discharge at the discharge power. Because the electric quantity of the energy storage battery is the electric quantity stored in the valley electricity consumption period, namely, the energy storage electric quantity of the energy storage battery is stored through the valley electricity consumption period, on one hand, the energy storage battery can be used for controlling the discharge power of the follow-up energy storage battery, on the other hand, the electric quantity can be supplied to a user in the peak electricity consumption period, so that the user uses low-price electricity as much as possible in the peak electricity consumption period, and further, the technical problem that in the related technology, the user has high electricity consumption cost when the user uses electricity in the peak electricity consumption period is solved.
As an alternative embodiment, determining the discharge power of the energy storage battery according to the comparison result includes: and under the condition that the predicted electricity consumption is larger than the energy storage electricity consumption, determining the minimum value of the actual electricity consumption power corresponding to the current time and the performance discharge power corresponding to the energy storage battery as the discharge power.
In this embodiment, the above obtained comparison result is that, when the predicted power consumption is greater than the stored power consumption, the actual power corresponding to the current time is determined, and at the same time, the actual power corresponding to the current time may be compared with the performance-optimized discharge power corresponding to the stored power, and the minimum value of the performance-optimized discharge powers corresponding to the stored power may be selected as the discharge power. The minimum value in the corresponding performance discharge power is selected as the discharge power, so that the purpose of the discharge power is to ensure the safe operation of the energy storage battery, and meanwhile, the electric quantity reserve of the energy storage battery can be fully utilized, so that the service life of the energy storage battery is prolonged to the maximum extent while the actual power consumption requirement is met.
As an alternative embodiment, determining the discharge power of the energy storage battery according to the comparison result includes: and under the condition that the predicted electricity consumption is smaller than or equal to the energy storage electricity consumption, determining the minimum value of the actual electricity consumption power corresponding to the current time and the maximum discharge power corresponding to the energy storage battery as the discharge power.
In this embodiment, in the case where the predicted power consumption is less than or equal to the stored energy power consumption, the actual power corresponding to the current time is determined, and at the same time, the actual power corresponding to the current time may be compared with the corresponding maximum power of the stored energy battery, and the minimum value of the maximum power of the stored energy battery may be selected as the power of discharge. The minimum value of the corresponding maximum discharge power is selected as the discharge power, so that the purpose of the method is to ensure that the energy storage battery can meet the actual power demand, and to maintain the energy storage battery within the bearable range to provide reliable power output, and to a certain extent, the electric quantity of the energy storage battery can be utilized to the maximum extent, so that the safe operation of the energy storage battery is ensured while the actual power demand is met.
As an alternative embodiment, before determining the predicted power consumption amount corresponding to the target control period according to the predicted power consumption amounts respectively corresponding to the target control period, the method further includes: calling an electricity utilization function corresponding to the target day; and determining the predicted electric power respectively corresponding to the target control time periods according to the electric function.
In this embodiment, the predicted power consumption may be calculated by a power consumption function corresponding to a target day, and the power consumption function may be a different power consumption function corresponding to a selected different target day, that is, the target control period may be divided into a plurality of time points according to the target control period corresponding to the target day, and the predicted power consumption corresponding to each time point may be obtained by calling the power consumption function corresponding to the selected target day.
It should be noted that, through the electricity utilization function determining the predicted electricity utilization power, to a certain extent, the predicted electricity utilization amount can be determined according to the predicted electricity utilization power corresponding to the target control period, which is helpful for understanding the electricity utilization requirement in the target control period, and can provide a basis for regulating and controlling the discharge power of the energy storage battery.
As an alternative embodiment, before invoking the power function corresponding to the target day, the method further includes: determining historical electricity utilization data of a plurality of preset days, wherein the preset days correspond to different date attributes respectively, and the preset days with the same corresponding date attributes as those of the target days exist in the preset days; and obtaining electricity utilization functions respectively corresponding to a plurality of preset days according to the historical electricity utilization data, wherein the preset days comprise target days.
In this embodiment, first, historical electricity data of a plurality of predetermined days are determined, where the plurality of predetermined days respectively correspond to different date attributes, and there are predetermined days corresponding to the same date attribute as the date attribute corresponding to the target day, for example, the predetermined days are determined to be 30 days in month units, at this time, the 2 nd day corresponding to each of the plurality of predetermined days may be selected as the target day, and the selection of the predetermined days and the target day is not limited herein, and may be customized according to a specific scene and application.
For the steps, selecting the preset days with the same date attribute as the target day, ensuring that the historical electricity consumption data of the preset days is similar to the electricity consumption characteristics of the target day, then analyzing the historical electricity consumption data, and establishing an electricity consumption function corresponding to each preset day respectively by a fitting method, wherein the electricity consumption function can be used for predicting the electricity consumption of the days with the same date attribute in the future. Among the electricity usage functions of the plurality of predetermined days, an electricity usage function corresponding to a predetermined day whose date attribute is the same as that of the target day is selected as the electricity usage function of the target day.
It should be noted that, the corresponding electricity utilization function can be built before the electricity utilization function corresponding to the target day is called according to the historical electricity utilization data of a plurality of preset days, so that the electricity consumption of the target day can be predicted according to the historical data of similar dates to a certain extent, and a more accurate basis is provided for regulating and controlling the discharge power of the energy storage battery. By using historical data and electricity usage functions for a predetermined day, electricity demand for a target day may be better predicted and managed.
As an alternative embodiment, determining the target control period based on the current time and the peak electricity usage period includes: under the condition that the control frequency is carried in the discharge power control request of the energy storage battery, determining a target control period according to the current time and the peak power utilization period by using the control frequency.
In this embodiment, the control frequency may be a sending frequency of the discharge power control request of the energy storage battery, and may be different time intervals such as each hour, each 15 minutes, each minute, etc., which is not limited herein, and may be customized according to a specific scenario and application.
Under the condition that the control frequency is carried in the discharge power control request of the energy storage battery, the control frequency can be utilized to determine a target control period according to the current time and the peak power utilization period. That is, by acquiring the current time and peak electricity consumption period information, the time interval of the target control period may be determined according to the control frequency, and then the start time and the end time of the target control period are calculated according to the current time and the peak electricity consumption period, the start time being the current time and the end time being the current time plus the time interval of the target control period, and thus the discharge power control request to be transmitted to the energy storage battery may be determined according to the calculated start time and end time of the target control period.
It should be noted that, through the control frequency set in the above steps, the target control period can be determined according to the current time, the peak power consumption period and the control frequency, so that the discharge power of the energy-storage battery can be regulated and controlled in a proper time period according to the real-time power consumption condition and the control requirement, so as to meet the power consumption requirement and the control requirement, and the electric energy utilization efficiency is improved to the greatest extent.
As an alternative embodiment, after controlling the energy storage battery to discharge at the discharge power, the method further comprises: acquiring update time; and under the condition that the updating time belongs to the valley electricity utilization period, controlling the energy storage battery to store electricity with charging power.
In this embodiment, after the discharging process of the energy storage battery is completed, the current time may be obtained as the update time, and whether the update time is in the valley electricity period may be further determined by comparing the predetermined valley electricity period with the update time, and if the update time is in the valley electricity period, the energy storage battery is controlled to store electricity with charging power, where the charging power may be determined according to specific requirements of the valley electricity period and the charging capability of the energy storage battery.
Through the steps, the discharging of the vare energy battery and the charging control of the energy storage battery are carried out according to the real-time updating time and the electricity consumption time period information, so that the power of the energy storage battery can be reasonably regulated and controlled according to the electricity consumption requirement and the electricity supply condition, and the low-cost electric power is fully utilized for electricity storage in the valley electricity consumption time period, so that the dual advantages of more efficiently utilizing the energy and the economic cost are realized.
Based on the foregoing embodiments and optional embodiments, an optional implementation is provided, and is specifically described below.
In the related art, for example, the peak-to-valley electricity rate system, also called 'time-of-use electricity rate', is performed by residents. Peak period: generally refers to the electricity consumption unit is more concentrated, electricity consumption is performed when power supply is stressed, and the valley period is as follows: generally, electricity is used when electricity units are fewer and electricity is supplied sufficiently, for example, at night, electricity prices in peak periods are far higher than those in valley periods, and flat periods: it is also common to focus on daytime, where electricity prices are slightly lower than peak periods, but much higher than valley periods, where the root cause of peak-to-valley electricity prices is due to unequal power generation and power usage.
However, the current energy storage battery generally adopts a fuzzy calculation method when carrying out load prediction, namely, the technical problem of high electricity consumption cost of a user exists when the user uses electricity in a peak electricity consumption period. The current load electricity consumption situation is predicted by a large amount of historical data, the load prediction mode is too fuzzy, electricity consumption habit and demand of a user are not considered, the effect caused by sudden change of electricity consumption of the user is difficult to deal with, meanwhile, the current load prediction schemes do not combine the load prediction with the characteristics of the energy storage battery, most of the energy storage batteries only discharge at the maximum power when the peak Gu Taoli is executed, the result of the load prediction is not fully utilized, and the service life of the energy storage battery is seriously influenced by discharging at the maximum power for a long time. For the above reasons, there is a problem in that the user electricity costs are high when the user uses electricity in the peak electricity use period.
In view of this, a method is provided in an alternative embodiment of the present invention, and fig. 2 is a system frame diagram of a station building type optical storage cooling centralized control system provided in an alternative embodiment of the present invention, including: the micro-grid controller, the battery management system BMS, the energy storage battery PCS, the power grid, the electric energy meter, and the load, and the optional embodiments of the present application are described in detail below.
S1, responding to an energy storage battery discharge power control request, and calling a peak electricity utilization period corresponding to a target day, wherein the energy storage battery discharge power request carries the target day;
the historical electricity consumption data of a plurality of preset days are determined, wherein the preset days correspond to different date attributes respectively, and among the preset days, preset days with the same corresponding date attributes as the corresponding date attributes of the target days exist, and the target days are included among the preset days. The above steps are assumed to be: setting a user electricity utilization period N (same as the preset day), importing an energy storage battery optimal discharging plan function Pstorage optimal=g1 (SOC), namely a (optimal discharging power-charge state) corresponding function, and an energy storage battery maximum discharging plan function Pstorage max=g2 (SOC), namely a (maximum discharging power-charge state) corresponding function, and importing a peak-valley electricity price interval period; the electricity consumption period N is the electricity consumption habit of the user, the user can set through the upper computer according to the electricity consumption habit of the user, N can be 7 days or 30 days, the electricity consumption condition of the nth day in each period is similar, if the electricity consumption period is 7, the electricity consumption habit of each Monday (same as the target day) of the user is similar.
S2, determining a target control period according to the current time and the peak power consumption period;
s3, determining the predicted electricity consumption corresponding to the target control period according to the predicted electricity consumption corresponding to the target control period;
it should be noted that, according to the above historical electricity consumption data, electricity consumption functions corresponding to a plurality of predetermined days are obtained, and the electricity consumption functions may be obtained by fitting, and the steps thereof are as follows: recording the electricity consumption condition of daily load in N days of an electricity consumption period, namely, the 1 st day to the N th day, calculating the electricity consumption condition as a typical day, picking up the electricity consumption condition of the same day in all periods, fitting to generate an electricity consumption curve, and generating N electricity consumption functions Pnegative=f (t), namely, (load power-time) corresponding functions, respectively corresponding to the 1 st to the N typical days by using a matrix laboratory matlab fitting algorithm; because the electricity utilization habit of the nth day in each period has commonality, data fitting is respectively carried out on each day in the period to generate an electricity utilization function of each typical day. The daily electricity usage schedule in the next cycle may be set by default to each typical day; if the electricity utilization period is set to be 7, and monday to sunday respectively correspond to seven typical days 1 to 7, defaulting to the electricity utilization plan of the next monday as the 1 st typical day; the user can set the next day as the 7 th typical day through the upper computer according to the electricity consumption condition of the plan, and the electricity consumption plan formulated by the micro-grid controller is ensured to be more in line with the requirements of the user through the man-machine interaction mode so as to cope with various emergency situations.
S4, comparing the predicted electricity consumption with the energy storage electricity of the energy storage battery to obtain a comparison result;
s5, determining the discharge power of the energy storage battery according to the comparison result, and controlling the energy storage battery to discharge with the discharge power.
It should be noted that, when the comparison result indicates that the predicted power consumption is greater than the stored power consumption, the minimum value of the actual power consumption corresponding to the current time and the performance discharge power corresponding to the stored power battery is determined as the discharge power. The specific discharge power can be carried out by the following steps: if it is>The energy storage electric quantity Q indicates that the predicted electric quantity of the peak period is far greater than the energy storage electric quantity Q, and the energy storage has enough time to discharge the electric quantity in the peak period. At this time, if the load power P is negative (t)>Energy storage discharge power=psteak, energy storage is discharged with optimal power to optimize the service life of the energy storage, otherwise if load power psteak (t)<And if the energy storage optimal charge and discharge power Poptimal, the energy storage discharge power=Pnegative (t).
Wherein the method comprises the steps ofFor predicting the power consumption of the remaining peak period of the day, the integration interval is [ MAX (current time, peak period starting time), peak period cut-off time ]K is a correction coefficient (0< K <100%) with K being constant, the actual load power consumption in the peak period of the user>Ratio to the amount of stored energy>Statistical calculation shows that when the load actually uses electric power Pnegative (t)>When the energy storage optimal charge and discharge power Pstorage is optimal, the actual load electricity consumptionA difference is generated between the stored energy and the discharge amount Q.
And under the condition that the comparison result is smaller than or equal to the stored energy electric quantity, determining the minimum value of the actual electric power corresponding to the current time and the maximum discharge power corresponding to the stored energy battery as the discharge power. It may determine the discharge power of the energy storage cell by the steps of: if it is<The energy storage Q indicates that the predicted energy storage Q in the peak period is insufficient to support the end of the energy storage Q in the peak period. At this time, if the load power P is negative (t)>Energy storage maximum charge/discharge power pdemax, then energy storage discharge power=pdemax, energy storage is discharged with maximum discharge power, otherwise if load power pdega (t)<The energy storage maximum discharge power pdamax, then the energy storage discharge power=pcnegative (t).
Before determining the discharge power of the energy storage battery according to the comparison result, the following steps are needed: the energy storage performs grid-connected point power control, namely, the grid-connected electric input power is ensured to be more than 0 by controlling the energy storage discharging power, the electric quantity of the energy storage battery is prevented from being poured into a power grid to generate island benefits and electric energy loss, at the moment, the micro-grid controller collects the grid-connected point power through the electric energy meter, the energy storage is controlled to discharge in a peak period, and the grid-connected point power is ensured to be more than 0.
By the alternative embodiments, at least the following advantages can be achieved:
(1) Because the electric quantity of the energy storage battery is the electric quantity stored in the valley electricity consumption period, namely, the energy storage electric quantity of the energy storage battery is stored through the valley electricity consumption period, on one hand, the method can be used for controlling the discharge power of the follow-up energy storage battery, and on the other hand, the method can be used for supplying the electric quantity to a user in the peak electricity consumption period so that the user can use low-price electricity as much as possible in the peak electricity consumption period;
(2) The predicted electricity consumption is determined by the predicted electricity consumption power under the target control period, namely, the predicted electricity consumption power can be used for not only predicting the electricity consumption demand of the target control period and helping the energy storage battery to moderately discharge in the peak electricity consumption period, but also helping the energy storage battery to make reasonable discharge control decisions so as to reduce the pressure on the power grid and balance the load of the power grid;
(3) Since the discharge power of the energy storage battery is determined according to the comparison result of the comparison prediction electricity consumption and the energy storage electricity consumption of the energy storage battery, that is, the discharge power of the energy storage battery can be determined according to the comparison result, so that the energy storage battery can provide enough electricity consumption to meet the electricity consumption requirement of a user in a target control period, and the balance of the electricity consumption requirement is facilitated.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of the various embodiments of the present invention.
Example 2
According to an embodiment of the present invention, there is further provided an apparatus for implementing the power control method of an energy storage battery, and fig. 3 is a block diagram of a power control apparatus of an energy storage battery according to an embodiment of the present invention, as shown in fig. 3, including: the device is described in detail below as a calling module 302, a first determining module 304, a second determining module 306, a comparing module 308, a third determining module 310, and a control module 312.
The retrieving module 302 is configured to retrieve, in response to a discharge power control request of the energy storage battery, a peak electricity consumption period corresponding to a target day, where the discharge power control request of the energy storage battery carries the target day, and the discharge power control request of the energy storage battery is used to request to determine a discharge power of the energy storage battery in the target control period corresponding to the target day, and an energy storage electric quantity in the energy storage battery is an electric quantity stored in a valley electricity consumption period; the first determining module 304 is connected to the retrieving module 302, and is configured to determine a target control period according to the current time and the peak electricity consumption period; a second determining module 306, coupled to the first determining module 304, for determining a predicted power consumption corresponding to the target control period according to the predicted power consumption corresponding to the target control period; the comparison module 308 is connected to the second determination module 306, and is configured to compare the predicted power consumption with the stored energy power of the energy storage battery to obtain a comparison result; a third determining module 310, coupled to the comparing module 308, for determining the discharge power of the energy storage battery according to the comparison result; the control module 312 is connected to the third determining module 310, and is configured to control the energy storage battery to discharge at a discharge power.
It should be noted that the above-mentioned invoking module 302, the first determining module 304, the second determining module 306, the comparing module 308, the third determining module 310 and the controlling module 312 correspond to the steps S102 to S112 in the power control method of implementing the energy storage battery, and the multiple modules are the same as the examples and application scenarios implemented by the corresponding steps, but are not limited to those disclosed in the above-mentioned embodiment 1.
Example 3
According to another aspect of the embodiment of the present invention, there is also provided an electronic device including: a processor; a memory for storing processor-executable instructions, wherein the processor is configured to execute the instructions to implement the method of power control of the energy storage battery of any of the above.
Example 4
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, which when executed by a processor of an electronic device, causes the electronic device to perform the power control method of the energy storage battery of any one of the above.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform 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 Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A method of controlling power of an energy storage battery, comprising:
responding to an energy storage battery discharge power control request, and calling a peak electricity consumption period corresponding to a target day, wherein the energy storage battery discharge power control request carries the target day, the energy storage battery discharge power control request is used for requesting to determine the discharge power of an energy storage battery in the target control period corresponding to the target day, and the energy storage electric quantity in the energy storage battery is the electric quantity stored in the valley electricity consumption period;
determining the target control period according to the current time and the peak power consumption period;
determining a predicted power consumption corresponding to the target control period according to the predicted power consumption corresponding to the target control period;
comparing the predicted electricity consumption with the energy storage electricity of the energy storage battery to obtain a comparison result;
determining the discharge power of the energy storage battery according to the comparison result;
controlling the energy storage battery to discharge at the discharge power;
wherein, according to the comparison result, determining the discharge power of the energy storage battery includes:
determining the minimum value of the actual power corresponding to the current time and the maximum discharge power corresponding to the energy storage battery as the discharge power under the condition that the predicted power consumption is smaller than or equal to the energy storage power;
Wherein, according to the comparison result, determining the discharge power of the energy storage battery includes:
and under the condition that the predicted electricity consumption is larger than the energy storage electricity consumption, determining the minimum value of the actual electricity consumption corresponding to the current time and the performance discharge power corresponding to the energy storage battery as the discharge power, wherein the performance discharge power corresponding to the energy storage battery is the energy storage optimal discharge power, and the energy storage optimal discharge power is used for optimizing the service life of the energy storage battery.
2. The method according to claim 1, wherein before determining the predicted power consumption amount corresponding to the target control period from the predicted power consumption amounts respectively corresponding to the target control periods, further comprising:
calling an electricity utilization function corresponding to the target day;
and determining the predicted electric power respectively corresponding to the target control time periods according to the electric function.
3. The method of claim 2, wherein before the invoking the power-on function corresponding to the target day, further comprising:
determining historical electricity utilization data of a plurality of preset days, wherein the preset days respectively correspond to different date attributes, and the preset days have preset days with corresponding date attributes identical to the date attributes corresponding to the target days;
And obtaining electricity utilization functions respectively corresponding to the plurality of preset days according to the historical electricity utilization data, wherein the target days are included in the plurality of preset days.
4. The method of claim 1, wherein the determining the target control period based on the current time and the peak electricity usage period comprises:
and under the condition that the control request of the discharge power of the energy storage battery also carries control frequency, determining the target control period according to the current time and the peak power utilization period by using the control frequency.
5. The method of any one of claims 1 to 4, wherein after the controlling the energy storage battery to discharge at the discharge power, further comprising:
acquiring update time;
and under the condition that the updating time belongs to the valley electricity utilization period, controlling the energy storage battery to store electricity with charging power.
6. A power control device for an energy storage battery, comprising:
the system comprises an energy storage battery discharging power control request, a retrieving module and a storage battery, wherein the energy storage battery discharging power control request is used for requesting to determine the discharging power of the energy storage battery in a target control period corresponding to a target day, and the energy storage electric quantity in the energy storage battery is the electric quantity stored in a valley electric consumption period;
The first determining module is used for determining the target control period according to the current time and the peak power consumption period;
a second determining module, configured to determine a predicted power consumption corresponding to the target control period according to the predicted power consumption corresponding to the target control period;
the comparison module is used for comparing the predicted electricity consumption with the energy storage electricity quantity of the energy storage battery to obtain a comparison result;
the third determining module is used for determining the discharge power of the energy storage battery according to the comparison result;
the control module is used for controlling the energy storage battery to discharge at the discharge power;
the comparison module is further configured to determine, when the predicted power consumption is less than or equal to the stored energy power consumption, that a minimum value of the actual power consumption corresponding to the current time and the maximum power to be discharged corresponding to the stored energy battery is the power to be discharged;
the comparison module is further configured to determine, when the predicted power consumption is greater than the energy storage power consumption, an actual power consumption corresponding to the current time, and a minimum value of performance discharge powers corresponding to the energy storage batteries is the discharge power, where the performance discharge power corresponding to the energy storage batteries is an energy storage optimal discharge power, and the energy storage optimal discharge power is used to optimize a service life of the energy storage batteries.
7. An electronic device, comprising:
a processor;
a memory for storing the processor-executable instructions;
wherein the processor is configured to execute the instructions to implement the method of power control of an energy storage battery as claimed in any one of claims 1 to 5.
8. A computer readable storage medium, characterized in that instructions in the computer readable storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the power control method of an energy storage battery according to any one of claims 1 to 5.
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