Power system and power balance correction method and power balance correction device thereof

Abstract

The invention discloses a power system and a power balance correction method and a power balance correction device thereof. The method comprises the following steps: acquiring power supply power of each power supply in at least one power supply and first load power of a load; calculating the second load power of the load based on the power supply power of each power supply; obtaining a power difference value between the first load power and the second load power; and correcting the power supply power of each power supply based on the power supply power of each power supply and the power difference value under the condition that the power of the power system is determined to be unbalanced based on the power difference value. Therefore, according to the method, whether the power supply power of the electric power system is balanced or not can be judged based on the power supply power of each power supply and the first load power of the load, and the power supply power of each power supply is corrected based on the power difference value under the condition that the power of the electric power system is determined to be unbalanced, so that the situation that the user experience is influenced due to the large power difference value is avoided; and the user cognition of power system loss is reduced as much as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power systems, and in particular to a power balance correction method of a power system, a computer readable storage medium, an electronic device, a power balance correction device of a power system and a power system. BACKGROUND

[0002] In a complete new energy system, there are four dimensions of active storage grid load, that is, a new energy power generation system, an energy storage system, a power grid system and a load. In order to clearly understand the operation of the new energy system, it is necessary to collect and display the four dimension data of source storage grid load, such as photovoltaic power generation, energy storage charging / discharging, power grid power supply / feeding and load power consumption. At present, there is a large error in collecting data, which affects data analysis and user experience.

[0003] In order to collect accurate energy data, in the related technology, a technical scheme of installing electric meters at each end of source storage grid load is adopted to collect data through electric meters, but the price of electric meters is expensive, which does not have feasibility in actual product application. In addition, a technical scheme of quickly reporting source storage grid load data is also adopted to avoid the situation that users cannot find power imbalance with naked eyes, but increasing the frequency of reporting source storage grid load data will lead to a large amount of reported data, greatly increasing the server data storage cost. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art. To this end, the first purpose of the present application is to propose a power balance correction method of a power system, which can determine whether the power source power of the power system is balanced based on the power source power of each power source and the first load power of the load, and correct the power source power of each power source based on the power difference when it is determined that the power of the power system is unbalanced, so as to avoid the influence of large power difference on user experience, reduce the user's cognitive sense of power system loss as much as possible, at the same time, compared with the technical scheme of installing electric meters at each end of source storage grid load in the related art, the present application reduces the demand for the number of electric meters, thereby reducing the hardware cost of the power system, compared with the technical scheme of accelerating the reporting of source storage grid load data in the related art, the present application reduces the reporting data frequency, thereby avoiding the increase of server data storage cost.

[0005] The second purpose of the present application is to propose a computer readable storage medium.

[0006] The third purpose of the present application is to propose an electronic device.

[0007] The fourth purpose of the present application is to propose a power balance correction device of a power system.

[0008] The fifth purpose of the present application is to propose a power system.

[0009] To achieve the above object, the power balance correction method of the power system according to an embodiment of the present application comprises: collecting power of each power source in at least one power source and first load power of the load; calculating second load power of the load based on the power of each power source; obtaining power difference between the first load power and the second load power; and correcting the power of each power source based on the power of each power source and the power difference in the case that the power imbalance of the power system is determined based on the power difference.

[0010] The power balance correction method of the power system according to an embodiment of the present application collects the power of each power source in at least one power source and the first load power of the load, calculates the second load power of the load based on the power of each power source, and obtains the power difference between the first load power and the second load power. In the case that the power imbalance of the power system is determined based on the power difference, the power of each power source is corrected based on the power of each power source and the power difference. Thus, the method can determine whether the power of the power system is balanced based on the power of each power source and the first load power of the load. In the case that the power imbalance of the power system is determined, the power of each power source is corrected based on the power difference to avoid the large power difference affecting the user experience and reduce the user's awareness of the power system loss as much as possible. In addition, compared with the technical solution of installing the electric meter at each end of the source, storage, network and load in the related art, the number of electric meters is reduced, thereby reducing the hardware cost of the power system. Compared with the technical solution of accelerating the reporting of source, storage, network and load data in the related art, the reporting data frequency is reduced, thereby avoiding the increase of the server data storage cost.

[0011] In addition, the power balance correction method of the power system according to the above embodiments of the present application can have the following additional technical features:

[0012] According to an embodiment of the present application, the second load power of the load is calculated based on the power of each power source, which comprises: summing the power of each power source to obtain the second load power; wherein the power comprises positive power, negative power or zero.

[0013] According to an embodiment of the present application, the power of each power source is corrected based on the power of each power source and the power difference, which comprises: summing the absolute value of the power of each power source to obtain the total power of at least one power source; and correcting the power of each power source in proportion based on the total power, the power of each power source and the power difference.

[0014] According to one embodiment of the present application, the power balance correction method of the power system further comprises: obtaining a power deviation rate by dividing the power difference value by the first load power; determining that the power system is in power balance when the power deviation rate is within a preset deviation rate range; and determining that the power system is in power imbalance when the power deviation rate is not within the preset deviation rate range.

[0015] According to one embodiment of the present application, the power balance correction method of the power system further comprises: obtaining a power deviation rate by dividing the power difference value by the first load power; determining that the power system is in power balance when the power deviation rate is within a preset deviation rate range; and determining that the power system is in power imbalance when the power deviation rate is not within the preset deviation rate range.

[0016] According to one embodiment of the present application, before the power of each power source is corrected based on the power of each power source and the power difference value, the power balance correction method of the power system further comprises: obtaining a correction frequency of the power of each power source; when the power system is determined to be in power imbalance based on the power difference value and the correction frequency is less than a preset frequency, the power of each power source is corrected again based on the power of each power source and the power difference value, and the step of calculating the second load power of the load based on the power of each power source is returned to; when the power system is determined to be in power balance based on the power difference value or the correction frequency is greater than or equal to the preset frequency, the corrected power of each power source and the first load power are reported to a target device, so that the target device displays the power of each power source and the first load power.

[0017] According to one embodiment of the present application, the at least one power source comprises one or more of a new energy power generation system, an energy storage system, and a power grid system.

[0018] To achieve the above-mentioned purpose, the second embodiment of the present application provides a computer readable storage medium having a program stored thereon, and the program is executed by a processor to implement the power balance correction method of the power system.

[0019] The computer readable storage medium according to the embodiment of the present application, when the program is executed by the processor, implements the power balance correction method of the power system. Based on the power balance correction method of the power system, the power of each power source can be corrected based on the power difference value, so as to avoid the influence of a large power difference value on user experience and reduce the user's awareness of power system loss as much as possible.

[0020] To achieve the above object, the third aspect of the present application provides an electronic device, comprising a memory, a processor and a program stored in the memory and capable of running on the processor, and when the processor executes the program, the power balance correction method of the power system is realized.

[0021] The electronic device according to the embodiment of the present application realizes the power balance correction method of the power system when the processor executes the program. Based on the power balance correction method of the power system, the power of each power source can be corrected based on the power difference, so as to avoid the influence of the large power difference on the user experience and reduce the user's awareness of the power system loss as much as possible.

[0022] To achieve the above object, the fourth aspect of the present application provides a power balance correction device of a power system, the power system comprising at least one power source and a load, the power balance correction device of the power system comprising: an acquisition module, configured to acquire the power of each power source in the at least one power source and the first load power of the load; a calculation module, configured to calculate the second load power of the load based on the power of each power source and obtain the power difference between the first load power and the second load power; and a correction module, configured to correct the power of each power source based on the power of each power source and the power difference in the case that the power imbalance of the power system is determined based on the power difference.

[0023] The power balance correction device of the power system according to the embodiment of the present application acquires the power of each power source in the at least one power source and the first load power of the load through the acquisition module, calculates the second load power of the load based on the power of each power source through the calculation module, and obtains the power difference between the first load power and the second load power. The correction module corrects the power of each power source based on the power of each power source and the power difference in the case that the power imbalance of the power system is determined based on the power difference. Thus, the device can determine whether the power of the power system is balanced based on the power of each power source and the first load power of the load, and correct the power of each power source based on the power difference in the case that the power imbalance of the power system is determined, so as to avoid the influence of the large power difference on the user experience, reduce the user's awareness of the power system loss as much as possible, and reduce the number of electric meters required, thereby reducing the hardware cost of the power system, and reduce the data reporting frequency, thereby avoiding the increase of the server data storage cost.

[0024] To achieve the above object, the fifth aspect of the present application provides a power system, comprising the electronic device or the power balance correction device of the power system.

[0025] The power system according to the embodiment of the present application, based on the electronic device or the power balance correction device of the power system, reduces the user's cognitive sense of power system loss and improves the user experience without increasing the cost.

[0026] Additional aspects and advantages of the present application will be described in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 Flow chart of the power balance correction method of the power system according to an embodiment of the present application;

[0028] Figure 2 Connection diagram of the power system according to an embodiment of the present application;

[0029] Figure 3 Flow chart of the power balance correction method of the power system according to an embodiment of the present application;

[0030] Figure 4 Block diagram of the electronic device according to an embodiment of the present application;

[0031] Figure 5 Connection diagram of the power balance correction device of the power system according to an embodiment of the present application;

[0032] Figure 6 Block diagram of the power system according to an embodiment of the present application;

[0033] Figure 7 Block diagram of the power system according to another embodiment of the present application. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0035] The power balance correction method, computer readable storage medium, electronic device, power balance correction device of the power system and power system according to the embodiments of the present application are described below with reference to the accompanying drawings.

[0036] Figure 1A flowchart of a power balance correction method for a power system according to an embodiment of the present application.

[0037] In an embodiment of the present application, the power system includes at least one power source and a load.

[0038] Specifically, the power source in the power system can include one or more of a new energy power generation system, an energy storage system, and a grid system, wherein the new energy power generation system can be a photovoltaic power generation system, a wind power generation system, etc. For example, in actual application, the power system includes a new energy power generation system, an energy storage system, and a load, or includes a new energy power generation system, a grid system, and a load, or includes a grid system, an energy storage system, and a load, etc., and the specific implementation is not limited.

[0039] For example, as shown in FIG. 1, the power source in the power system includes a new energy power generation system 1, an energy storage system 2, and a grid system 3, and the new energy power generation system 1, the energy storage system 2, and the grid system 3 are respectively connected to an inverter 5 for power conversion to supply power to a load 4. Figure 2 The new energy power generation system 1 can be a photovoltaic power generation system, and in the power system, grid-side power data is metered by a power meter 6, and photovoltaic-side, energy storage-side, and load-side power is collected by the inverter itself. The metering accuracy of the power meter is higher than the collection accuracy of the inverter itself, and the power system has certain power device, line loss, and other losses, so in actual system operation, if the load power calculated by the grid power meter, photovoltaic-side collection, and energy storage-side collection is greatly different from the load-side collected power, the user experience will be affected. Therefore, the present application provides a power balance correction method for a power system to minimize the user's perception of power system loss.

[0040] The power balance correction method for a power system of the present application will be described in detail below with reference to the drawings, taking the example that at least one power source in the power system includes a new energy power generation system, an energy storage system, and a grid system.

[0041] As shown in FIG. 1, the power balance correction method for a power system of the present application can include: Figure 1

[0042] S1, collecting and obtaining power source power of each power source in the at least one power source and first load power Pload of the load;

[0043] S2, calculating second load power Ploadc of the load based on the power source power of each power source;

[0044] S3, obtaining a power difference Pdiffer between the first load power Pload and the second load power Ploadc;

[0045] ​S4, in a case where it is determined that the power of the power system is unbalanced based on the power difference value, correcting the power of each power source based on the power of each power source and the power difference value Pdiffer.

[0046] Specifically, the data of the grid system is collected by the electric meter to determine the power of the grid system Pgrid, the new energy power generation system, the energy storage system and the load collect data through the collection unit in the inverter to determine the power of the new energy power generation system Ppv, the power of the energy storage system Pes and the first load power of the load Pload.

[0047] The second load power Ploadc of the load is calculated by the power of the grid system Pgrid, the power of the new energy power generation system Ppv and the power of the energy storage system Pes, and the power difference Pdiffer between the first load power Pload collected and the second load power Ploadc calculated is calculated, that is, Pdiffer=Pload-Ploadc.

[0048] According to the size of the power difference value Pdiffer, it is judged whether the power of the power system is balanced, for example, when the power difference value Pdiffer is out of the preset range, it is determined that the second load power Ploadc calculated and the first load power Pload collected on the load side differ greatly, and the power of the power system is unbalanced; when the power difference value Pdiffer is within the preset range, it is determined that the second load power Ploadc calculated and the first load power Pload collected on the load side differ less, and the power of the power system is balanced.

[0049] When it is determined that the power of the power system is unbalanced according to the power difference value Pdiffer, the power of the grid system Pgrid, the power of the new energy power generation system Ppv and the power of the energy storage system Pes are corrected based on the power difference value Pdiffer, and the second load power Ploadc is recalculated with the corrected power of the grid system Pgrid, the power of the new energy power generation system Ppv and the power of the energy storage system Pes, and the corresponding power difference value Pdiffer, and the above operation is repeatedly executed, and the correction operation is stopped when it is determined that the power of the power system is balanced or the preset stopping condition is reached.

[0050] In a case where it is determined that the power of the power system is balanced or the preset stopping condition is reached, the corresponding power of the grid system Pgrid, the power of the new energy power generation system Ppv, the power of the energy storage system Pes and the first load power Pload are uploaded to the cloud, and the power is displayed through the cloud.

[0051] The embodiment polls and collects the power of the new energy power generation system, the energy storage system, the power grid system and the load after the power system is operated. Before reporting the power of the new energy power generation system, the energy storage system, the power grid system and the load to the cloud each time, the power of the power system is balanced and corrected, and after the correction is correct, the power is reported to the cloud for display, so as to reduce the user's cognitive feeling of the power system loss as much as possible. Meanwhile, compared with the technical solution of installing the electric meter at each end of the source, storage, grid and load in the related art, the embodiment reduces the number of electric meters and the hardware cost of the power system. Compared with the technical solution of accelerating the reporting of the source, storage, grid and load data in the related art, the embodiment reduces the reporting data frequency requirement and avoids the increase of the server data storage cost.

[0052] In an embodiment of the present application, the second load power of the load is calculated based on the power supply power of each power supply, including: summing the power supply power of each power supply to obtain the second load power Ploadc; wherein the power supply power includes positive power supply power, negative power supply power or zero.

[0053] Specifically, according to the law of conservation of energy, the input power is equal to the output power, so the calculated second load power Ploadc = Pgrid + Ppv + Pes. Wherein, the power supply power includes positive power supply power, negative power supply power or zero, for example, when the energy storage system is in a discharging state, the power supply power Pes of the energy storage system is positive power supply power; when the energy storage system is in a charging state, i.e. the new energy power generation system and / or the power grid system charges the energy storage system, the power supply power Pes of the energy storage system is negative power supply power; when the energy storage system is in a standby off state, the power supply power Pes of the energy storage system is zero. Therefore, the power supply power in the embodiment is a signed power value, which can be specifically divided into positive and negative based on the current direction, so that the power balance correction method of the power system proposed in the present application has universality and practicability, and the higher the collection accuracy, the more accurate the data.

[0054] In an embodiment of the present application, the power supply power of each power supply is corrected based on the power supply power of each power supply and the power difference Pdiffer, including: summing the absolute value of the power supply power of each power supply to obtain the total power Ptotal of at least one power supply; correcting the power supply power of each power supply in proportion based on the total power Ptotal, the power supply power of each power supply and the power difference Pdiffer.

[0055] Specifically, the absolute values of the power supply power Pgrid of the power grid system, the power supply power Ppv of the new energy power generation system and the power supply power Pes of the energy storage system are added to obtain the total power Ptotal, i.e. Ptotal = |Pgrid| + |Ppv| + |Pes|.

[0056] Then, based on the total power Ptotal, the power of each power supply and the power difference Pdiffer, the power of each power supply is corrected in proportion, that is, according to the proportion of the power of the grid system, the power of the new energy power generation system and the power of the energy storage system, the power of the grid system, the new energy power generation system and the energy storage system is corrected in proportion. For example, the power adjustment coefficient corresponding to each power supply can be determined according to the proportion of the power of each power supply in the total power Ptotal, the product of the adjustment coefficient and the power difference Pdiffer is obtained to obtain the adjustment power value corresponding to each power supply, and the power of each power supply is corrected. In addition, the adjustment weight corresponding to each power supply can also be set, and the power adjustment coefficient corresponding to each power supply is determined according to the proportion of the power of each power supply in the total power Ptotal and the corresponding adjustment weight, the product of the adjustment coefficient and the power difference Pdiffer is obtained to obtain the adjustment power value corresponding to each power supply, and the power of each power supply is corrected. The specific setting can be set according to the actual situation.

[0057] In an embodiment of the present application, based on the total power Ptotal, the power of each power supply and the power difference Pdiffer, the power of each power supply is corrected in proportion, including: obtaining the ratio of the power of each power supply to the total power Ptotal, and obtaining the product of the ratio and the power difference Pdiffer, to obtain the power correction value of each power supply; obtaining the sum of the power of each power supply and the power correction value, to obtain the corrected power of each power supply.

[0058] That is, the corrected power of the grid system = Pgrid+Pgrid / Ptotal*Pdiffer, the corrected power of the new energy power generation system = Ppv+Ppv / Ptotal*Pdiffer, and the corrected power of the energy storage system = Pes+Ppv / Ptotal*Pdiffer.

[0059] The corrected power of each power supply is re-calculated for the second load power Ploadc, and if the power difference Pdiffer between the first load power Pload and the re-determined second load power Ploadc meets the power balance condition, it is determined that the power balance correction is ended; if the power difference Pdiffer between the first load power Pload and the re-determined second load power Ploadc still does not meet the power balance condition, the above steps are repeated to continue the power balance correction.

[0060] In one embodiment of the present application, the power balance correction method of the power system further comprises: obtaining a power deviation rate Δload by dividing the power difference Pdiffer by the first load power Pload; determining that the power system is in power balance when the power deviation rate Δload is within a preset deviation rate range k; and determining that the power system is in power imbalance when the power deviation rate Δload is not within the preset deviation rate range k.

[0061] That is, the power deviation rate Δload is calculated by dividing the power difference Pdiffer by the first load power Pload, i.e., Δload = Pdiffer / Pload*100%. It is determined whether the power deviation rate Δload is within the preset deviation rate range k. If yes, it is determined that the power system is in power balance, and the power does not need to be corrected. If no, it is determined that the power system is in power imbalance, and the power needs to be corrected, and the power correction step is performed.

[0062] In one embodiment of the present application, before the power of each power source is corrected based on the power of each power source and the power difference, the power balance correction method of the power system further comprises: obtaining a correction number n of the power of each power source; when it is determined that the power system is in power imbalance based on the power difference Pdiffer, and the correction number n is less than a preset number N, the power of each power source is corrected based on the power of each power source and the power difference Pdiffer, and the step of calculating the second load power of the load based on the power of each power source is returned to; when it is determined that the power system is in power balance based on the power difference Pdiffer, or the correction number n is greater than or equal to the preset number N, the corrected power of each power source and the first load power Pload are reported to a target device, so that the target device displays the power of each power source and the first load power Pload.

[0063] That is, to avoid the case of infinite power balance correction, the correction number n corresponding to each power supply is determined by adding 1 to the correction number after each power correction operation. Whether to perform the correction operation is determined based on the power difference Pdiffer and the correction number n. Specifically, in the case where the power imbalance of the power system is determined based on the power difference Pdiffer and the correction number n is less than the preset number N, the power of each power supply is corrected based on the power of each power supply and the power difference Pdiffer; if the correction number n is greater than or equal to the preset number N, or the power balance of the power system is determined based on the power difference Pdiffer, the power of each power supply is not corrected, at this time, the power of the power grid system Pgrid, the power of the new energy power generation system Ppv and the power of the energy storage system Pes after correction and the first load power Pload of the load are reported to the target device, so that the target device displays the power of the power grid system, the new energy power generation system and the energy storage system and the first load power Pload of the load. Wherein, the target device can be a mobile terminal, a computer terminal, etc., which is not limited in particular.

[0064] In this embodiment, when the power system is running, the system power is balanced and corrected before the new energy power generation system, the energy storage system, the power grid system and the load power are reported to the cloud, and then the target device is reported after the processing is correct, so as to reduce the user's cognition of the power system loss as much as possible.

[0065] As a specific embodiment of the present application, the power system is as shown in Figure 2 The power balance correction method of the power system is as shown in Figure 3 The power balance correction method of the power system can include the following steps:

[0066] S101, the power of the new energy power generation system Ppv, the power of the energy storage system Pes and the first load power Pload of the load are collected.

[0067] S102, the second load power Ploadc=Pgrid+Ppv+Pes is calculated.

[0068] S103, the power difference Pdiffer=Pload-Ploadc is calculated.

[0069] S104, the power deviation rate Δload=Pdiffer / Pload is calculated.

[0070] S105, whether the power deviation rate Δload is within the preset deviation rate range is judged. If yes, step S106 is executed; if no, step S108 is executed.

[0071] S106, the power balance of the power system is determined.

[0072] S107, reporting the power supply power of each power supply and the first load power to the target device to make the target device display the power supply power of each power supply and the first load power.

[0073] S108, judging whether the correction times n is less than the preset times N. If yes, executing step S109; if no, executing step S107.

[0074] S109, determining the power imbalance of the power system.

[0075] S110, calculating the total power Ptotal = |Pgrid| + |Ppv| + |Pes|.

[0076] S111, calculating the corrected power supply power of the grid system Pgrid = Pgrid + Pgrid / Ptotal*Pdiffer; the corrected power supply power of the new energy power generation system Ppv = Ppv + Ppv / Ptotal*Pdiffer, and the corrected power supply power of the energy storage system Pes = Pes + Ppv / Ptotal*Pdiffer.

[0077] S112, calculating the correction times n = n + 1. Returning to execute step S102.

[0078] In summary, according to the power balance correction method of the power system of the embodiment of the present application, the power supply power of each power supply in at least one power supply and the first load power of the load are collected and obtained, the second load power of the load is calculated based on the power supply power of each power supply, and the power difference between the first load power and the second load power is obtained. In the case of determining the power imbalance of the power system based on the power difference, the power supply power of each power supply is corrected based on the power supply power of each power supply and the power difference. Therefore, the method can determine whether the power supply power of the power system is balanced based on the power supply power of each power supply and the first load power of the load, and in the case of determining the power imbalance of the power system, the power supply power of each power supply is corrected based on the power difference, so as to avoid the large power difference affecting the user experience, reduce the user's cognitive sense of the power system loss as much as possible, at the same time, compared with the technical solution of installing the electric meter at each end of the source, storage, grid and load in the related art, the number of electric meters required is reduced, the hardware cost of the power system is reduced, compared with the technical solution of accelerating the reporting of source, storage, grid and load data in the related art, the data reporting frequency requirement is reduced, so as to avoid the increase of the server data storage cost.

[0079] Corresponding to the above embodiment, the present application also provides a computer readable storage medium.

[0080] The computer readable storage medium of the embodiment of the present application has a program stored thereon, and the program is executed by a processor to implement the power balance correction method of the power system.

[0081] The computer readable storage medium of the embodiment of the present application has a program stored thereon, and the program is executed by a processor to implement the power balance correction method of the power system.

[0082] Corresponding to the above-mentioned embodiment, the present application further provides an electronic device.

[0083] As shown in Figure 4 The electronic device 100 of the embodiment of the present application includes a memory 110, a processor 120, and a program stored in the memory 110 and executable on the processor 120. When the processor 120 executes the program, the power balance correction method of the power system is implemented.

[0084] The electronic device of the embodiment of the present application, when the processor executes the program, implements the power balance correction method of the power system. Based on the power balance correction method of the power system, the power of each power source can be corrected based on the power difference, so as to avoid the large power difference from affecting the user experience and reduce the user's awareness of power system loss as much as possible.

[0085] Corresponding to the above-mentioned embodiment, the present application further provides a power balance correction device of a power system.

[0086] According to an embodiment of the present application, the power system includes at least one power source and a load.

[0087] As shown in Figure 5 The power balance correction device of the power system of the embodiment of the present application can include an acquisition module 10, a calculation module 20, and a correction module 30.

[0088] The acquisition module 10 is configured to acquire the power of each power source in the at least one power source and the first load power of the load. The calculation module 20 is configured to calculate the second load power of the load based on the power of each power source, and obtain the power difference between the first load power and the second load power. The correction module 30 is configured to correct the power of each power source based on the power of each power source and the power difference, in the case that the power imbalance of the power system is determined based on the power difference.

[0089] According to one embodiment of the present application, the calculation module 20 calculates the second load power of the load based on the power supply power of each power supply, specifically for: summing up the power supply power of each power supply to obtain the second load power; wherein the power supply power includes positive power supply power, negative power supply power or zero.

[0090] According to one embodiment of the present application, the correction module 30 corrects the power supply power of each power supply based on the power supply power of each power supply and the power difference, specifically for: summing up the absolute value of the power supply power of each power supply to obtain the total power of at least one power supply; correcting the power supply power of each power supply in proportion based on the total power, the power supply power of each power supply and the power difference.

[0091] According to one embodiment of the present application, the correction module 30 corrects the power supply power of each power supply in proportion based on the total power, the power supply power of each power supply and the power difference, specifically for: obtaining the ratio of the power supply power of each power supply to the total power, and obtaining the product of the ratio and the power difference to obtain the power correction value of each power supply; obtaining the sum of the power supply power of each power supply and the power correction value to obtain the corrected power supply power of each power supply.

[0092] According to one embodiment of the present application, the correction module 30 is further configured to: obtain the power deviation rate by taking the ratio of the power difference and the first load power; determine that the power of the power system is balanced when the power deviation rate is within a preset deviation rate range; and determine that the power of the power system is unbalanced when the power deviation rate is not within the preset deviation rate range.

[0093] According to one embodiment of the present application, the correction module 30 is further configured to: obtain the correction times of the correction of the power supply power of each power supply; correct the power supply power of each power supply based on the power supply power of each power supply and the power difference when the power of the power system is determined to be unbalanced based on the power difference and the correction times are less than a preset number of times; and not correct the power supply power of each power supply when the power of the power system is determined to be balanced based on the power difference or the correction times are greater than or equal to the preset number of times.

[0094] According to one embodiment of the present application, after the correction module 30 corrects the power supply power of each power supply based on the power supply power of each power supply and the power difference, the correction module 30 is further configured to: report the corrected power supply power of each power supply and the first load power to a target device, so that the target device displays the power supply power of each power supply and the first load power.

[0095] According to one embodiment of the present application, the at least one power supply includes one or more of a new energy power generation system, an energy storage system and a power grid system.

[0096] It should be noted that details not disclosed in the power balance correction device of the power system of the embodiments of the present application are referred to the details disclosed in the power balance correction method of the power system of the above-mentioned embodiments of the present application, and will not be described here.

[0097] According to the power balance correction device of the power system of the embodiments of the present application, the power source power of each power source in at least one power source and the first load power of the load are acquired by the acquisition module, the second load power of the load is calculated based on the power source power of each power source by the calculation module, and the power difference between the first load power and the second load power is obtained. In the case of determining that the power of the power system is unbalanced based on the power difference, the power source power of each power source is corrected based on the power source power of each power source and the power difference by the correction module. Therefore, the device can determine whether the power source power of the power system is balanced based on the power source power of each power source and the first load power of the load, and in the case of determining that the power of the power system is unbalanced, the power source power of each power source is corrected based on the power difference, so as to avoid that the large power difference affects the user experience, and to reduce the user's awareness of the power system loss as much as possible. At the same time, compared with the technical solution of installing an electric meter at each end of the source, storage, network and load in the related art, the number of electric meters required is reduced, and the hardware cost of the power system is reduced. And compared with the technical solution of accelerating the reporting of source, storage, network and load data in the related art, the data reporting frequency requirement is reduced, thereby avoiding the increase of server data storage cost.

[0098] Corresponding to the above-mentioned embodiments, the present application also provides a power system.

[0099] As Figure 6 shown, the power system 1000 of the embodiments of the present application includes the above-mentioned electronic device 100, or as Figure 7 shown, the power system 1000 of the embodiments of the present application includes the above-mentioned power balance correction device 200 of the power system. For example, the power system 100 can be a photovoltaic energy storage system.

[0100] According to the power system of the embodiments of the present application, based on the above-mentioned electronic device or the above-mentioned power balance correction device of the power system, the user's awareness of the power system loss is reduced without increasing the cost, and the user experience is improved.

[0101] It is to be appreciated that the above description and the examples that follow are intended to be illustrative only and that changes can be made to the description, either functionally or chronologically, as well as changes being made concerning which elements of the description and / or examples are employed per se, all without departing from the spirit and scope of the application. It should be further appreciated that the logic and / or steps represented in the flow diagrams and / or otherwise described herein, for example, can be considered as a sequence of executable instructions executed by a logic processor, such as a processing system, including a processor, or other logic processor-based system, or in conjunction with such an instruction execution system. In this regard, the "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer readable medium can comprise any one of the following: an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer readable medium include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium can even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for example via optical scanning of the paper or other medium, then compiled, interpreted, or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

[0102] It should be understood that aspects of the application can be implemented in hardware, software, firmware or combinations thereof. In the above embodiments, various steps or methods can be implemented in software or firmware that is stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any of the following technologies, or combinations thereof, can be used with the necessary logic gates and circuitry supporting logic functions for the data signals: discrete logic circuitry having logic gates for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and so forth.

[0103] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0104] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implying a number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0105] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0106] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A power balance correction method of a power system, characterized by, The power system comprises at least one power source and a load, and the method comprises: acquiring power source power of each power source in the at least one power source and first load power of the load; calculating second load power of the load based on the power source power of each power source; obtaining a power difference value between the first load power and the second load power; in a case where power imbalance of the power system is determined based on the power difference value, correcting the power source power of each power source based on the power source power of each power source and the power difference value.

2. The method of claim 1, wherein, The calculating of the second load power of the load based on the power source power of each power source comprises: summing the power source power of each power source to obtain the second load power; wherein the power source power comprises positive power source power, negative power source power or zero.

3. The method of claim 2, wherein, The correcting of the power source power of each power source based on the power source power of each power source and the power difference value comprises: summing absolute values of the power source power of each power source to obtain total power of the at least one power source; correcting the power source power of each power source in proportion based on the total power, the power source power of each power source and the power difference value.

4. The method of claim 3, wherein, The correcting of the power source power of each power source in proportion based on the total power, the power source power of each power source and the power difference value comprises: obtaining a ratio of the power source power of each power source to the total power, and obtaining a product of the ratio and the power difference value to obtain a power correction value of each power source; obtaining a sum of the power source power of each power source and the power correction value to obtain the corrected power source power of each power source.

5. The method according to any one of claims 1 to 4, characterized in that, The method further comprises: obtaining a power deviation rate by obtaining a ratio of the power difference value to the first load power; determining power balance of the power system in a case where the power deviation rate is in a preset deviation rate range; determining power imbalance of the power system in a case where the power deviation rate is not in the preset deviation rate range.

6. The method according to any one of claims 1 to 4, characterized in that, Before the correcting of the power source power of each power source based on the power source power of each power source and the power difference value, the method further comprises: obtaining a correction number of the correcting of the power source power of each power source; in a case where power imbalance of the power system is determined based on the power difference value and the correction number is less than a preset number, correcting the power source power of each power source based on the power source power of each power source and the power difference value again, and returning to the step of calculating the second load power of the load based on the power source power of each power source; in a case where power balance of the power system is determined based on the power difference value or the correction number is greater than or equal to the preset number, reporting the corrected power source power of each power source and the first load power to a target device to enable the target device to display the power source power of each power source and the first load power.

7. The method according to any one of claims 1 to 4, characterized in that, The at least one power source comprises one or more of a new energy power generation system, an energy storage system and a power grid system.

8. A computer-readable storage medium, characterized in that, A program is stored thereon, and the program is executed by a processor to implement the power balance correction method of the power system according to any one of claims 1-7.

9. An electronic device, comprising: The power system comprises at least one power supply and a load, and the device comprises: a collection module, configured to collect power supply power of each power supply in the at least one power supply and first load power of the load; 10. A power balance correction device for an electric power system, characterized by comprising: a calculation module, configured to calculate second load power of the load based on the power supply power of each power supply, and obtain a power difference between the first load power and the second load power; a correction module, configured to correct the power supply power of each power supply based on the power supply power of each power supply and the power difference, in a case where it is determined that the power system is power unbalanced based on the power difference. The electronic device according to claim 9 or the power balance correction device of the power system according to claim 10 is included. ​ 11. A power system, characterized by ​

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