CN117013574A - Method and device for determining charge and discharge amount of energy storage power station and electronic equipment - Google Patents
Method and device for determining charge and discharge amount of energy storage power station and electronic equipment Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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Abstract
The disclosure provides a method and a device for determining charge and discharge amount of an energy storage power station and electronic equipment, and relates to the technical field of power grids. The specific implementation scheme is as follows: predicting an initial maximum charge of the energy storage power station; determining an operation mode of the energy storage power station, wherein the operation mode is as follows: matching with a new energy consumption mode or a peak clipping and valley filling mode; under the condition that the operation mode of the energy storage power station is a matched new energy consumption mode, calculating the energy storage charge and discharge capacity of the energy storage power station in the matched new energy consumption mode by adopting a first calculation mode corresponding to the matched new energy consumption mode; and under the condition that the operation mode of the energy storage power station is a peak clipping and valley filling mode, calculating the energy storage charge and discharge capacity of the energy storage power station in the peak clipping and valley filling mode by adopting a second calculation mode corresponding to the peak clipping and valley filling mode. The method and the device can improve the calculation accuracy of the charge and discharge amount of the energy storage power station in the power system.
Description
Technical Field
The present invention relates to the field of power grid technologies, and in particular, to a method and an apparatus for determining charge and discharge amounts of an energy storage power station, and an electronic device.
Background
Nowadays, novel energy storage in the electric power system has dynamic absorption capacity and can release in good time characteristics to novel energy storage power station in the electric power system has three operation modes, includes: the new energy consumption mode, the peak clipping and valley filling mode and the standby mode are matched, wherein the new energy consumption mode is matched with the wind power station and the photovoltaic power station, so that wind-light intermittence, volatility and randomness can be improved, and wind-light consumption is improved; the peak clipping and valley filling mode can reduce peak power consumption and installed capacity, so that the difficulty of peak clipping at low valleys is solved, and the efficiency of a unit is improved; the standby mode can lighten the pressure of standby configuration of the conventional unit and reduce the loss of energy storage charge-discharge conversion.
In the prior art, the charge and discharge capacity of an energy storage power station in an electric power system is generally calculated by using mechanical energy storage modes such as pumped storage and the like, the method simulates the novel energy storage charge and discharge process, and only single charge and discharge are considered to simulate calculation in a peak clipping and valley filling mode and a new energy consumption matching mode, so that the calculation accuracy of the energy storage charge and discharge is lower.
Disclosure of Invention
The disclosure provides a method, a device, electronic equipment and a storage medium for determining charge and discharge amount of an energy storage power station, so as to solve the problem that the charge and discharge amount calculation accuracy of the energy storage power station in a power system is low.
According to an aspect of the present disclosure, there is provided a charge and discharge amount determining method of an energy storage power station, including:
predicting an initial maximum charge of the energy storage power station;
determining an operation mode of the energy storage power station, wherein the operation mode is as follows: matching with a new energy consumption mode or a peak clipping and valley filling mode;
under the condition that the operation mode of the energy storage power station is a matched new energy consumption mode, calculating the energy storage charge and discharge capacity of the energy storage power station in the matched new energy consumption mode by adopting a first calculation mode corresponding to the matched new energy consumption mode;
and under the condition that the operation mode of the energy storage power station is a peak clipping and valley filling mode, calculating the energy storage charge and discharge capacity of the energy storage power station in the peak clipping and valley filling mode by adopting a second calculation mode corresponding to the peak clipping and valley filling mode.
According to another aspect of the present disclosure, there is provided a charge and discharge amount determining apparatus of an energy storage power station, including:
the first prediction module is used for predicting the initial maximum charge amount of the energy storage power station;
the first determining module is used for determining an operation mode of the energy storage power station, and the operation mode is as follows: matching with a new energy consumption mode or a peak clipping and valley filling mode;
the first calculation module is used for calculating the energy storage charging and discharging capacity of the energy storage power station in the matched new energy consumption mode by adopting a first calculation mode corresponding to the matched new energy consumption mode when the operation mode of the energy storage power station is the matched new energy consumption mode;
And the second calculation module is used for calculating the energy storage charging and discharging capacity of the energy storage power station in the peak clipping and valley filling mode by adopting a second calculation mode corresponding to the peak clipping and valley filling mode under the condition that the operation mode of the energy storage power station is the peak clipping and valley filling mode.
According to another aspect of the present disclosure, there is provided an electronic device including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of determining the charge and discharge of an energy storage power station provided by the present disclosure.
According to another aspect of the present disclosure, there is provided a non-transitory computer-readable storage medium storing computer instructions for causing the computer to perform the method of determining the charge and discharge amount of an energy storage power station provided by the present disclosure.
In the method, the initial maximum charge amount of the energy storage power station is firstly predicted, then the corresponding operation mode of the energy storage power station is determined, the corresponding calculation mode is selected to calculate the charge and discharge amount of the energy storage power according to the determined operation mode of the energy storage power station, and the calculation accuracy of the charge and discharge amount of the energy storage power station in the power system can be improved through the method.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following specification.
Drawings
The drawings are for a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:
FIG. 1 is a flow chart of a method of determining charge and discharge amounts of an energy storage power station provided by the present disclosure;
FIG. 2 is another flow chart of a method of determining charge and discharge of an energy storage power station provided by the present disclosure;
FIG. 3 is another flow chart of a method of determining charge and discharge of an energy storage power station provided by the present disclosure;
FIG. 4 is a schematic diagram of parameters in a new energy consumption mode provided by the present disclosure;
FIG. 5 is a schematic diagram of coordinates of a load curve and a charge-discharge reference line provided by the present disclosure;
FIG. 6 is a schematic diagram of coordinates of a load curve and a charge-discharge reference line provided by the present disclosure;
FIG. 7 is a schematic diagram of coordinates of a load curve and a charge-discharge reference line provided by the present disclosure;
FIG. 8 is another flow chart of a method of determining charge and discharge of an energy storage power station provided by the present disclosure;
FIG. 9 is a block diagram of a charge and discharge amount determining apparatus for an energy storage power station provided by the present disclosure;
FIG. 10 is another block diagram of a charge and discharge amount determination apparatus for an energy storage power station provided by the present disclosure;
FIG. 11 is another block diagram of a charge and discharge amount determination apparatus for an energy storage power station provided by the present disclosure;
FIG. 12 is another block diagram of a charge and discharge amount determination apparatus for an energy storage power station provided by the present disclosure;
fig. 13 is a block diagram of an electronic device for implementing a method of determining charge and discharge amounts of an energy storage power station in accordance with an embodiment of the present disclosure.
Detailed Description
Exemplary embodiments of the present disclosure are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present disclosure to facilitate understanding, and should be considered as merely exemplary. Accordingly, one of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Referring to fig. 1, fig. 1 is a flowchart of a method for determining charge and discharge amount of an energy storage power station provided by the present disclosure, as shown in fig. 1, including the following steps:
s101, predicting an initial maximum charge amount of the energy storage power station.
The prediction of the initial maximum charge amount can be obtained by calculating parameters in the energy storage power station, and can be obtained by multiplying the energy storage capacity and the energy storage duration in the energy storage power station.
In addition, in addition to the above energy storage capacity and the above energy storage duration, other parameters in the energy storage power station may be obtained, for example: and acquiring parameters such as a corresponding load curve, a new energy consumption space, a new energy waste electric quantity curve, conversion efficiency and the like in the energy storage power station. The embodiment of the present invention is not limited thereto.
S102, determining an operation mode of the energy storage power station, wherein the operation mode is as follows: matching with a new energy consumption mode or a peak clipping and valley filling mode.
The operation mode of the energy storage power station can be determined by selecting and judging corresponding parameters, wherein the energy storage power station in the new energy consumption mode is matched with wind power and photovoltaic power stations, wind and light intermittence, volatility and randomness can be improved, and the energy storage power station in the peak clipping and valley filling mode can reduce peak power consumption and installed capacity and sequentially improve the efficiency of the unit.
In addition, the operation mode of the energy storage power station can be a standby mode, and the energy storage power station in the standby mode can relieve the standby configuration pressure of a conventional unit and reduce the loss of energy storage charge-discharge conversion.
And S103, under the condition that the operation mode of the energy storage power station is a matched new energy consumption mode, calculating the energy storage charge and discharge capacity of the energy storage power station in the matched new energy consumption mode by adopting a first calculation mode corresponding to the matched new energy consumption mode.
Before the first calculation mode corresponding to the new energy consumption mode is adopted, the new energy consumption space and the electric quantity to be discarded corresponding to the new energy consumption mode can be calculated according to the acquired relevant parameters of the energy storage power station, and it is noted that the new energy consumption space and the electric quantity to be discarded can also be obtained through direct acquisition.
And determining the first calculation mode according to the new energy consumption space and the new energy consumption electric quantity, and obtaining the charging and discharging quantity of the energy storage power station in the corresponding new energy consumption mode according to the first calculation mode.
The method comprises the steps of calculating the charge quantity and the discharge quantity of the energy storage power station directly through a new energy consumption space and new energy waste quantity, segmenting the working time period of the energy storage power station, calculating the residual energy storage capacity and the dischargeable quantity time by time period, and obtaining the charge quantity and the discharge quantity of the energy storage power station after the calculation of all time periods is completed, so that the energy storage charge and discharge quantity is obtained.
In addition, energy storage balance processing can be performed on the charge amount and the discharge amount of the obtained energy storage power station, namely when the energy storage charge amount is larger than the energy storage discharge amount, a corresponding charging period needs to be found, and the charge amount is deducted, so that energy storage balance is achieved.
And S104, under the condition that the operation mode of the energy storage power station is a peak clipping and valley filling mode, calculating the energy storage charge and discharge capacity of the energy storage power station in the peak clipping and valley filling mode by adopting a second calculation mode corresponding to the peak clipping and valley filling mode.
Before the second calculation mode corresponding to the peak clipping and valley filling mode is adopted, an energy storage load curve corresponding to the peak clipping and valley filling mode can be calculated according to the acquired relevant parameters of the energy storage power station, and it is noted that the energy storage load curve can be directly acquired.
And determining the second calculation mode according to the characteristic of the energy storage load curve and the initial maximum charge amount, and obtaining the charge and discharge amount of the energy storage power station in the corresponding peak clipping and valley filling mode according to the second calculation mode.
The charge and discharge of the energy storage power station can be determined by the energy storage load curve, the charge reference line and the discharge reference line, for example: and calculating to obtain an actual charge amount and a maximum discharge amount through the load curve, the charge reference line and the initial maximum charge amount, and obtaining a final charge and discharge amount according to the discharge reference line to obtain the energy storage charge and discharge amount of the energy storage power station in the peak clipping and valley filling modes.
It should be noted that, the calculation of the energy storage charge and discharge capacity may be performed according to the charge and discharge intervals of the energy storage power station.
In the embodiment, firstly, the initial maximum charge amount of the energy storage power station is predicted, then, the corresponding operation mode of the energy storage power station is determined, according to the determined operation mode of the energy storage power station, the corresponding calculation mode is selected to calculate the charge and discharge amount of the energy storage power according to the obtained initial maximum charge amount and the operation mode of the energy storage power station, and the calculation accuracy of the charge and discharge amount of the energy storage power station in a power system can be improved through the method.
As an alternative embodiment, after said determining the operation mode of the energy storage power station, the method further comprises: acquiring first parameter set data, wherein the first parameter set data comprises at least one of the following: energy storage capacity, energy storage duration and standby capacity; and determining first energy storage data according to the first parameter set data, wherein the first energy storage data represents the energy storage standby capacity of the energy storage power station in the standby mode.
The first energy storage data represents parameters of the energy storage power station in the standby mode, and can reflect the working performance state of the energy storage power station in the standby mode.
In this embodiment, the energy storage power station may further operate as a standby mode in addition to the new energy source matching absorption mode and peak clipping and valley filling mode, in which a first parameter set of the energy storage power station needs to be obtained, where the first parameter set may include an energy storage capacity, an energy storage duration and a standby capacity, and the energy storage standby capacity of the energy storage power station in the standby mode is determined by the first parameter set. By the method, a more suitable operation mode of the energy storage power station can be selected for calculation, and the calculation accuracy of the performance parameters of the energy storage power station in the power system is improved.
It should be noted that, the addition of the standby mode indicates that the energy storage power station has more than one choice for judging the operation mode, refer to fig. 2, fig. 2 is a flowchart of the energy storage power station in different operation modes, in fig. 2, the parameter of the initial maximum charge is calculated according to the known energy storage parameter, and then the operation mode corresponding to the energy storage power station is judged. In a standby mode, calculating or inputting related energy storage parameters, and determining the energy storage standby capacity according to the energy storage maximum capacity and the energy storage duration in the related energy storage parameters; under the peak clipping and valley filling modes, calculating or inputting a load curve of the energy storage power station, and determining a second calculation mode according to the characteristics of the load curve, so as to calculate and obtain the energy storage charge and discharge quantity of the energy storage power station; and under the cooperation of the new energy consumption mode, calculating or inputting new energy consumption space and waste electric quantity, and determining a first calculation mode according to the new energy consumption space and the waste electric quantity, so as to calculate and obtain the energy storage charge and discharge quantity of the energy storage power station.
As an optional implementation manner, when the operation mode of the energy storage power station is a new energy consumption mode, calculating the energy storage charge and discharge amount by adopting a first calculation mode corresponding to the new energy consumption mode, includes: dividing a time period from starting to ending of the operation of the energy storage power station into M time periods, and updating a first parameter set, wherein the first parameter set comprises at least one of the following: the new energy consumption space, the new energy waste amount, the current residual energy storage capacity and the current dischargeable amount; updating the residual energy storage capacity and the dischargeable amount of the M time periods according to the initial maximum charge amount; and determining the energy storage charging and discharging quantity according to the residual energy storage capacity and the dischargeable quantity.
The above-mentioned dividing the period from the start to the end of the operation of the energy storage power station into M periods may be dividing the period according to a charging process and a discharging process.
According to the initial maximum charge amount, the remaining energy storage capacity and the dischargeable amount of the M periods may be updated by first determining whether there is a new energy waste amount according to the parameters in the first parameter set, for example: calculating to obtain an actual charge amount and a residual charge amount of the energy storage power station under the condition that the new energy abandoned amount exists; and under the condition that the new energy abandoned amount does not exist, calculating to obtain the actual discharge amount and the stored energy charged amount. And updating the residual energy storage capacity and the dischargeable quantity of the M time periods by combining the parameters obtained under the two conditions.
In this embodiment, in the new energy consumption mode, the energy storage power station first obtains parameters required to be used in the new energy consumption mode, including a new energy consumption space and a new energy waste amount, updates the remaining energy storage capacity and the dischargeable amount according to the obtained parameters from time to time, and determines the charge amount and the discharge amount of the energy storage according to the remaining energy storage capacity and the dischargeable amount. According to the method, the energy storage charge and discharge amount can be obtained according to the abandoned electric quantity of the new energy source and through calculation in a time-period mode, and the calculation accuracy of the energy storage power station in the electric power system is improved.
It should be noted that, after determining the energy storage charge and discharge amount according to the energy storage capacity and the dischargeable amount, the energy storage balance process may further include: judging whether an energy storage balance process is needed according to the energy storage charge quantity and the energy storage discharge quantity, if the energy storage charge quantity is larger than the energy storage discharge quantity, searching a charging period from the last period of M periods, and deducting the charge quantity from the searched charging period until the energy storage balance is achieved.
As an alternative embodiment, referring to fig. 3, the updating the remaining energy storage capacity and the dischargeable amount for M periods includes at least one of the following: under the condition that no new energy waste amount exists and no new energy consumption space exists, the residual energy storage capacity and the dischargeable amount in the period are updated; updating the residual energy storage capacity and the dischargeable capacity of the period when the new energy waste amount does not exist, the new energy consumption space exists and the charged amount does not exist; determining a first size relation between the new energy consumption space and the stored energy charged amount under the condition that the new energy waste amount does not exist, the new energy consumption space exists, the stored energy charged amount exists, calculating the actual discharge amount and the stored energy charged amount according to the first size relation, and updating the residual energy storage capacity and the dischargeable amount in the period; under the condition that the new energy waste quantity exists and the residual energy storage capacity does not exist, the residual energy storage capacity and the dischargeable quantity in the period are updated; and under the condition that the new energy waste amount exists and the residual energy storage capacity exists, calculating the maximum charge amount, judging a second magnitude relation between the residual charge amount and the maximum charge amount, calculating the actual charge amount and the residual charge amount according to the second magnitude relation, and updating the residual energy storage capacity and the dischargeable amount in the period.
In addition, as shown in fig. 3, after the charge amount and the discharge amount of the stored energy are obtained, an energy storage balancing process is also included. When the energy storage charge amount is larger than the energy storage discharge amount, a charging period needs to be found out from the end period of the M periods, and the energy storage balance is achieved in a manner of deducting the charge amount; when the energy storage charge quantity is smaller than or equal to the energy storage discharge quantity, the energy storage charge quantity and the energy storage discharge quantity obtained by the method are directly used as the energy storage charge quantity to be obtained.
When there is a new energy waste amount and there is a remaining energy storage capacity, the maximum charge amount needs to be obtained, and the calculation of the maximum charge amount may be referred to as shown in fig. 4, and as shown in fig. 4, a first dotted line represents a new energy consumption space in one of M periods, and a distance between the first dotted line and a second dotted line represents a size of the energy storage capacity, that is, the maximum charge amount may be an area between the first dotted line and the second dotted line.
In this embodiment, by dividing the different situations of the parameters in the new energy consumption mode, generating a calculation mode corresponding to the different situations, and according to the determination that the new energy waste amount exists, respectively generating an actual charge amount and a residual charge amount in the presence situation, and an actual discharge amount and an stored energy charged amount in the absence situation, each of the M periods needs to perform a calculation step in the above method, so as to obtain the actual charge amount and the residual charge amount or the actual discharge amount and the stored energy charged amount of the M periods. And integrating and updating parameters under the two conditions to obtain the residual energy storage capacity and the dischargeable quantity. According to the method, the new energy consumption mode under different conditions can be calculated, so that the calculation accuracy of the performance parameters of the energy storage power station in the power system is improved.
As an optional implementation manner, when the operation mode of the energy storage power station is a peak clipping and valley filling mode, calculating the energy storage charging and discharging amount of the energy storage power station in the new energy consumption matching mode by adopting a second calculation mode corresponding to the peak clipping and valley filling mode includes: acquiring a load curve and a charging and discharging reference line of an energy storage power station; constructing a first coordinate system according to the load curve and the charging reference line, wherein the first coordinate system represents the interaction relation between the load curve and the charging reference line; dividing the first coordinate system into N charge and discharge areas, and calculating an actual charge amount and a maximum discharge amount according to the initial maximum charge amount, wherein the actual charge amount is an area surrounded by the load curve and the charge and discharge reference line, and the maximum discharge amount is a product of the actual charge amount and conversion efficiency; constructing a second coordinate system according to the load curve and the discharge datum line, wherein the second coordinate system represents the interaction relation between the load curve and the discharge datum line; calculating the actual discharge capacity according to the second coordinate system, wherein the actual discharge capacity is the area enclosed by the load curve and the discharge datum line; and integrating the actual charge amounts, the actual discharge amounts and the maximum discharge amounts of the N charge and discharge areas to obtain the energy storage charge and discharge amounts.
Before the first coordinate system and the second coordinate system are constructed, a load curve and a charge-discharge reference line may be obtained.
The N charge and discharge regions may be divided according to a charge process and a discharge process.
It should be noted that, in the first coordinate system, it is necessary to determine whether or not there are a plurality of intersecting portions between the load curve and the charge/discharge reference line, and if there are a plurality of intersecting portions, it is necessary to divide the charge/discharge area in the first coordinate system, and if there are no plurality of intersecting portions, it is necessary to obtain the actual charge amount and the maximum discharge amount directly from the load curve and the charge reference line.
Referring to fig. 5, fig. 6 and fig. 7, fig. 5, fig. 6 and fig. 7 respectively correspond to the coordinate system diagrams under different interaction relationships, as shown in fig. 5, only one intersection region exists between the load curve and the charging reference line, as shown in fig. 6, only one intersection region exists between the load curve and the charging reference line, and if there are multiple intersection regions between the load curve and the charging reference line, the partition is required to be performed according to the partition dotted line in fig. 6, as shown in fig. 7, and if there are multiple intersection regions between the load curve and the charging reference line, the partition is required to be performed according to the partition dotted line in fig. 7. The charging and discharging may be performed by using peak clipping and valley filling for each section. Wherein P is 1 Represents the discharge datum line, P 2 Represents a charging reference line S 1 Represents the highest load point, S 2 Representing the lowest load point.
In the embodiment, in a peak clipping and valley filling mode, the energy storage power station firstly acquires a load curve and a charging and discharging reference line of the energy storage power station, determines an actual charging amount and a maximum discharging amount according to a coordinate system interaction relation formed by the load curve and the charging reference line and an initial maximum charging amount, then determines an actual discharging amount according to a coordinate system interaction relation formed by the load curve and the discharging reference line, and finally obtains the charging and discharging amount of energy storage by integrating the actual discharging amount, the actual charging amount and the maximum discharging amount. According to the method, the load curve and the charging and discharging reference line are calculated under different conditions, so that the calculation accuracy of the performance parameters of the energy storage power station in the power system is improved.
As an alternative embodiment, the calculating the actual charge amount and the maximum discharge amount according to the initial maximum charge amount by dividing the first coordinate system into N charge and discharge areas includes: acquiring a first interaction area of the charging reference line and the load curve in the first coordinate system; moving the charging reference line downward in the first coordinate system when the first interaction area is larger than the initial maximum charge amount, and moving the charging reference line upward in the first coordinate system when the first interaction area is smaller than the maximum charge amount until the difference between the first interaction area and the initial maximum charge amount is within a preset tolerance range; and determining the actual charge amount and the maximum discharge amount according to the updated first coordinate system.
In this embodiment, by determining the area enclosed by the charging reference line and the load curve and the initial maximum charge amount, the charging reference line is subjected to the operation of translating up and down, so that the difference between the area enclosed by the charging reference line and the load curve and the initial maximum charge amount is within the tolerance range, thereby improving the calculation accuracy.
As an optional implementation manner, the calculating the actual discharge amount according to the second coordinate system includes: acquiring a second interaction area of the discharge datum line and the load curve in the second coordinate system; moving the discharge reference line in the second coordinate system upwards when the second interaction area is larger than the maximum discharge amount, and moving the discharge reference line in the second coordinate system downwards when the second interaction area is smaller than the maximum discharge amount until the second interaction area and the maximum discharge amount are different within a preset tolerance range; and determining the actual discharge capacity according to the updated second coordinate system.
In the embodiment, the area enclosed by the discharge datum line and the load curve and the maximum discharge amount are judged, and the discharge datum line is subjected to the up-down translation operation, so that the difference between the area enclosed by the discharge datum line and the load curve and the maximum discharge amount is within the tolerance range, and the calculation accuracy is improved.
As an alternative embodiment, as shown in fig. 8, fig. 8 is an embodiment of the calculation of the charge and discharge amount of the energy storage power station in the peak clipping and valley filling mode.
Firstly, a load curve and a charge and discharge reference line in an energy storage power station are obtained, whether an intersection area exists between the load curve and the charge reference line is judged, if the intersection area exists, a plurality of charge and discharge areas are divided, the charge and discharge areas are in one-to-one correspondence, and the area of the intersection area between the charge reference line and the load curve in each area, namely a first interaction area, is calculated in sequence.
Moving the charging reference line downward in the first coordinate system when the first interaction area is larger than the initial maximum charge amount, and moving the charging reference line upward in the first coordinate system when the first interaction area is smaller than the maximum charge amount until the difference between the first interaction area and the initial maximum charge amount is within a preset tolerance range; and determining the actual charge amount and the maximum discharge amount according to the updated first coordinate system.
Then, a second interaction area of the discharge datum line and the load curve in the second coordinate system is obtained; moving the discharge reference line in the second coordinate system upwards when the second interaction area is larger than the maximum discharge amount, and moving the discharge reference line in the second coordinate system downwards when the second interaction area is smaller than the maximum discharge amount until the second interaction area and the maximum discharge amount are different within a preset tolerance range; and determining the actual discharge capacity according to the updated second coordinate system.
Judging the relation between the discharging datum line and the charging datum line, if the discharging datum line is smaller than or equal to the charging datum line, re-adjusting the charging datum line, and judging the relation between the charging datum line and the discharging datum line again, if the discharging datum line is not equal to the charging datum line, re-returning to the step of calculating the interaction area of the charging datum line and the load curve, and if the charging datum line is the discharging datum line, judging whether each charging and discharging area is calculated again, and finally obtaining the charging and discharging capacity of the energy storage power station in the peak clipping and valley filling mode.
If the discharge reference line is larger than the charge reference line, it is necessary to determine whether the reference line is adjusted, and if the reference line is adjusted, it is necessary to jump to a step of determining whether the discharge reference line is equal to the charge reference line.
And if the discharge datum line is not adjusted under the condition that the discharge datum line is larger than the charging datum line, judging whether calculation of each charging and discharging area is completed or not, and finally obtaining the charging and discharging capacity of the energy storage power station in the peak clipping and valley filling mode.
If there is a missing charge/discharge area that is not calculated, the process returns to the step of calculating the area of the area where the charge reference line and the load curve interact with each other.
Referring to fig. 9, fig. 9 is a charge and discharge amount determining device of an energy storage power station provided in the present disclosure, as shown in fig. 9, the charge and discharge amount determining device 900 of the energy storage power station includes:
a first prediction module 901, configured to predict an initial maximum charge amount of the energy storage power station;
a first determining module 902, configured to determine an operation mode of the energy storage power station, where the operation mode is: matching with a new energy consumption mode or a peak clipping and valley filling mode;
the first calculating module 903 is configured to calculate, when the operation mode of the energy storage power station is a new energy consumption matching mode, an energy storage charge and discharge amount of the energy storage power station in the new energy consumption matching mode by adopting a first calculation mode corresponding to the new energy consumption matching mode;
and the second calculating module 904 is configured to calculate an energy storage charging and discharging amount of the energy storage power station in the peak clipping and valley filling mode by adopting a second calculating mode corresponding to the peak clipping and valley filling mode when the operation mode of the energy storage power station is the peak clipping and valley filling mode.
Optionally, as shown in fig. 10, the charge and discharge amount determining device 900 of the energy storage power station further includes:
a first obtaining module 905, configured to obtain first parameter set data, where the first parameter set data includes at least one of: energy storage capacity, energy storage duration and standby capacity;
A second determining module 906 is configured to determine first energy storage data according to the first parameter set data, where the first energy storage data represents an energy storage standby capacity of the energy storage power station in the standby mode.
Optionally, as shown in fig. 11, the first computing module 903 includes:
a first updating unit 9031, configured to divide a period from when the energy storage power station starts to operate to when the energy storage power station ends to be operated into M periods, and update a first parameter set, where the first parameter set includes at least one of: the new energy consumption space, the new energy waste amount, the current residual energy storage capacity and the current dischargeable amount;
a second updating unit 9032, configured to update the remaining energy storage capacity and the dischargeable amount of the M periods according to the initial maximum charge amount;
a first determining unit 9033, configured to determine the energy storage charging/discharging amount according to the remaining energy storage capacity and the dischargeable amount.
Optionally, the second updating unit 9032 includes: under the condition that no new energy waste amount exists and no new energy consumption space exists, the residual energy storage capacity and the dischargeable amount in the period are updated; updating the residual energy storage capacity and the dischargeable capacity of the period when the new energy waste amount does not exist, the new energy consumption space exists and the charged amount does not exist; determining a first size relation between the new energy consumption space and the stored energy charged amount under the condition that the new energy waste amount does not exist, the new energy consumption space exists, the stored energy charged amount exists, calculating the actual discharge amount and the stored energy charged amount according to the first size relation, and updating the residual energy storage capacity and the dischargeable amount in the period; under the condition that the new energy waste quantity exists and the residual energy storage capacity does not exist, the residual energy storage capacity and the dischargeable quantity in the period are updated; and under the condition that the new energy waste amount exists and the residual energy storage capacity exists, calculating the maximum charge amount, judging a second magnitude relation between the residual charge amount and the maximum charge amount, calculating the actual charge amount and the residual charge amount according to the second magnitude relation, and updating the residual energy storage capacity and the dischargeable amount in the period.
Optionally, as shown in fig. 12, the second calculating module 904 includes:
a first obtaining unit 9041, configured to obtain a load curve and a charging and discharging reference line of the energy storage power station;
constructing a first coordinate system according to the load curve and the charging reference line, wherein the first coordinate system represents the interaction relation between the load curve and the charging reference line;
a second determining unit 9042, configured to divide the first coordinate system into N charge and discharge areas, calculate an actual charge amount and a maximum discharge amount according to the initial maximum charge amount, where the actual charge amount is an area enclosed by the load curve and the charge and discharge reference line, and the maximum discharge amount is a product of the actual charge amount and conversion efficiency;
a first construction unit 9043, configured to construct a second coordinate system according to the load curve and the discharge reference line, where the second coordinate system represents an interaction relationship between the load curve and the discharge reference line;
a first calculating unit 9044, configured to calculate an actual discharge amount according to the second coordinate system, where the actual discharge amount is an area enclosed by the load curve and the discharge reference line;
the first integrating unit 9045 is configured to integrate the actual charge amounts, the actual discharge amounts, and the maximum discharge amounts of the N charge and discharge regions to obtain the energy storage charge and discharge amounts.
Optionally, the second determining unit 9042 includes: acquiring a first interaction area of the charging reference line and the load curve in the first coordinate system; moving the charging reference line downward in the first coordinate system when the first interaction area is larger than the initial maximum charge amount, and moving the charging reference line upward in the first coordinate system when the first interaction area is smaller than the maximum charge amount until the difference between the first interaction area and the initial maximum charge amount is within a preset tolerance range; and determining the actual charge amount and the maximum discharge amount according to the updated first coordinate system.
Optionally, the first computing unit 9044 includes: acquiring a second interaction area of the discharge datum line and the load curve in the second coordinate system; moving the discharge reference line in the second coordinate system upwards when the second interaction area is larger than the maximum discharge amount, and moving the discharge reference line in the second coordinate system downwards when the second interaction area is smaller than the maximum discharge amount until the second interaction area and the maximum discharge amount are different within a preset tolerance range; and determining the actual discharge capacity according to the updated second coordinate system.
According to an embodiment of the disclosure, the disclosure further provides an electronic device, a readable storage medium.
Fig. 13 illustrates a schematic block diagram of an example electronic device 1300 that can be used to implement embodiments of the present disclosure. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the disclosure described and/or claimed herein.
As shown in fig. 13, the apparatus 1300 includes a computing unit 1301 that can perform various appropriate actions and processes according to a computer program stored in a Read Only Memory (ROM) 1302 or a computer program loaded from a storage unit 1308 into a Random Access Memory (RAM) 1303. In the RAM 1303, various programs and data required for the operation of the device 1300 can also be stored. The computing unit 1301, the ROM 1302, and the RAM 1303 are connected to each other through a bus 1304. An input/output (I/O) interface 1305 is also connected to bus 1304.
Various components in device 1300 are connected to I/O interface 1305, including: an input unit 1306 such as a keyboard, a mouse, or the like; an output unit 1307 such as various types of displays, speakers, and the like; storage unit 1308, such as a magnetic disk, optical disk, etc.; and a communication unit 1309 such as a network card, a modem, a wireless communication transceiver, or the like. The communication unit 1309 allows the device 1300 to exchange information/data with other devices through a computer network such as the internet and/or various telecommunication networks.
The computing unit 1301 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of computing unit 1301 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various computing units running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, etc. The calculation unit 1301 performs the respective methods and processes described above, such as a charge and discharge amount determination method of the energy storage power station.
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program code may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus such that the program code, when executed by the processor or controller, causes the functions/operations specified in the flowchart and/or block diagram to be implemented. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), and the internet.
The computer system may include a client and a server. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server may be a cloud server, a server of a distributed system, or a server incorporating a blockchain.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps recited in the present disclosure may be performed in parallel, sequentially, or in a different order, provided that the desired results of the disclosed aspects are achieved, and are not limited herein.
The above detailed description should not be taken as limiting the scope of the present disclosure. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (10)
1. The method for determining the charge and discharge amount of the energy storage power station is characterized by comprising the following steps of:
predicting an initial maximum charge of the energy storage power station;
determining an operation mode of the energy storage power station, wherein the operation mode is as follows: matching with a new energy consumption mode or a peak clipping and valley filling mode;
under the condition that the operation mode of the energy storage power station is a matched new energy consumption mode, calculating the energy storage charge and discharge capacity of the energy storage power station in the matched new energy consumption mode by adopting a first calculation mode corresponding to the matched new energy consumption mode;
and under the condition that the operation mode of the energy storage power station is a peak clipping and valley filling mode, calculating the energy storage charge and discharge capacity of the energy storage power station in the peak clipping and valley filling mode by adopting a second calculation mode corresponding to the peak clipping and valley filling mode.
2. The method of determining the charge and discharge amount of an energy storage power station of claim 1, wherein after said determining the operational mode of the energy storage power station, the method further comprises:
acquiring first parameter set data, wherein the first parameter set data comprises at least one of the following: energy storage capacity, energy storage duration and standby capacity;
and determining first energy storage data according to the first parameter set data, wherein the first energy storage data represents the energy storage standby capacity of the energy storage power station in the standby mode.
3. The method for determining the charge and discharge amounts of the energy storage power station according to claim 1, wherein when the operation mode of the energy storage power station is a new energy consumption matching mode, calculating the charge and discharge amounts of the energy storage by adopting a first calculation mode corresponding to the new energy consumption matching mode includes:
dividing a time period from starting to ending of the operation of the energy storage power station into M time periods, and updating a first parameter set, wherein the first parameter set comprises at least one of the following: the new energy consumption space, the new energy waste amount, the current residual energy storage capacity and the current dischargeable amount;
updating the residual energy storage capacity and the dischargeable amount of the M time periods according to the initial maximum charge amount;
and determining the energy storage charging and discharging quantity according to the residual energy storage capacity and the dischargeable quantity.
4. The method of claim 3, wherein updating the remaining energy storage capacity and the dischargeable amount for M periods comprises at least one of:
under the condition that no new energy waste amount exists and no new energy consumption space exists, the residual energy storage capacity and the dischargeable amount in the period are updated;
updating the residual energy storage capacity and the dischargeable capacity of the period when the new energy waste amount does not exist, the new energy consumption space exists and the charged amount does not exist;
Determining a first size relation between the new energy consumption space and the stored energy charged amount under the condition that the new energy waste amount does not exist, the new energy consumption space exists, the stored energy charged amount exists, calculating the actual discharge amount and the stored energy charged amount according to the first size relation, and updating the residual energy storage capacity and the dischargeable amount in the period;
under the condition that the new energy waste quantity exists and the residual energy storage capacity does not exist, the residual energy storage capacity and the dischargeable quantity in the period are updated;
and under the condition that the new energy waste amount exists and the residual energy storage capacity exists, calculating the maximum charge amount, judging a second magnitude relation between the residual charge amount and the maximum charge amount, calculating the actual charge amount and the residual charge amount according to the second magnitude relation, and updating the residual energy storage capacity and the dischargeable amount in the period.
5. The method for determining the charge and discharge amounts of the energy storage power station according to claim 1, wherein when the operation mode of the energy storage power station is a peak clipping and valley filling mode, calculating the charge and discharge amounts of the energy storage power station in the new energy consumption matching mode by adopting a second calculation mode corresponding to the peak clipping and valley filling mode comprises:
Acquiring a load curve and a charging and discharging reference line of an energy storage power station;
constructing a first coordinate system according to the load curve and the charging reference line, wherein the first coordinate system represents the interaction relation between the load curve and the charging reference line;
dividing the first coordinate system into N charge and discharge areas, and calculating an actual charge amount and a maximum discharge amount according to the initial maximum charge amount, wherein the actual charge amount is an area surrounded by the load curve and the charge and discharge reference line, and the maximum discharge amount is a product of the actual charge amount and conversion efficiency;
constructing a second coordinate system according to the load curve and the discharge datum line, wherein the second coordinate system represents the interaction relation between the load curve and the discharge datum line;
calculating the actual discharge capacity according to the second coordinate system, wherein the actual discharge capacity is the area enclosed by the load curve and the discharge datum line;
and integrating the actual charge amounts, the actual discharge amounts and the maximum discharge amounts of the N charge and discharge areas to obtain the energy storage charge and discharge amounts.
6. The method of claim 5, wherein dividing the first coordinate system into N charge and discharge regions, and calculating the actual charge and the maximum discharge from the initial maximum charge comprises:
Acquiring a first interaction area of the charging reference line and the load curve in the first coordinate system;
moving the charging reference line downward in the first coordinate system when the first interaction area is larger than the initial maximum charge amount, and moving the charging reference line upward in the first coordinate system when the first interaction area is smaller than the maximum charge amount until the difference between the first interaction area and the initial maximum charge amount is within a preset tolerance range;
and determining the actual charge amount and the maximum discharge amount according to the updated first coordinate system.
7. The method of claim 5, wherein calculating the actual discharge amount according to the second coordinate system comprises:
acquiring a second interaction area of the discharge datum line and the load curve in the second coordinate system;
moving the discharge reference line in the second coordinate system upwards when the second interaction area is larger than the maximum discharge amount, and moving the discharge reference line in the second coordinate system downwards when the second interaction area is smaller than the maximum discharge amount until the second interaction area and the maximum discharge amount are different within a preset tolerance range;
And determining the actual discharge capacity according to the updated second coordinate system.
8. A charge and discharge amount determining device of an energy storage power station, comprising:
the first prediction module is used for predicting the initial maximum charge amount of the energy storage power station;
the first determining module is used for determining an operation mode of the energy storage power station, and the operation mode is as follows: matching with a new energy consumption mode or a peak clipping and valley filling mode;
the first calculation module is used for calculating the energy storage charging and discharging capacity of the energy storage power station in the matched new energy consumption mode by adopting a first calculation mode corresponding to the matched new energy consumption mode when the operation mode of the energy storage power station is the matched new energy consumption mode;
and the second calculation module is used for calculating the energy storage charging and discharging capacity of the energy storage power station in the peak clipping and valley filling mode by adopting a second calculation mode corresponding to the peak clipping and valley filling mode under the condition that the operation mode of the energy storage power station is the peak clipping and valley filling mode.
9. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1 to 7.
10. A non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the method of any one of claims 1 to 7.
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