Distributed photovoltaic power determination method and apparatus

Abstract

The application provides a distributed photovoltaic power determination method and device, and relates to the technical field of photovoltaic parameter determination.The method comprises the following steps: selecting a reference centralized photovoltaic power from the centralized photovoltaic power in a preset range according to the centralized photovoltaic historical power in the preset range and target distributed photovoltaic historical power; and obtaining the current power of the target distributed photovoltaic power according to the reference centralized photovoltaic historical power, the target distributed photovoltaic historical power and the current power of the reference centralized photovoltaic power.The application can determine the distributed photovoltaic power through calculation, so that the power of the distributed photovoltaic power is determined without setting more monitoring devices and complex monitoring systems, thereby effectively reducing the cost required for determining the distributed photovoltaic power.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic parameter determination, and particularly relates to a distributed photovoltaic power determination method and device. BACKGROUND

[0002] In the current environment, in order to better improve the power supply effect of each place, more distributed photovoltaics are set. The power of the distributed photovoltaics is one of important parameters for judging whether the operation of the distributed photovoltaics is normal. Therefore, it is necessary to determine the power of the distributed photovoltaics according to a preset time interval, so as to realize powerful monitoring of the operation of the distributed photovoltaics. The existing distributed photovoltaic power determination method is often realized by setting more monitoring devices and complex monitoring systems near the distributed photovoltaics. Setting more monitoring devices and complex monitoring systems needs to consume huge costs, and with the rapid increase in the number of distributed photovoltaics, the cost required for determining the power of the distributed photovoltaics is further increased. SUMMARY

[0003] An object of the present application is to provide a distributed photovoltaic power determination method to reduce the cost required for determining the power of the distributed photovoltaics. Another object of the present application is to provide a distributed photovoltaic power determination device. Still another object of the present application is to provide a computer device. Yet another object of the present application is to provide a readable medium.

[0004] In order to achieve the above objects, one aspect of the present application discloses a distributed photovoltaic power determination method, which comprises:

[0005] selecting a reference centralized photovoltaic from the centralized photovoltaics in the preset range according to the historical power generation amount of the centralized photovoltaics in the preset range and the historical power generation amount of the target distributed photovoltaic;

[0006] obtaining the current power of the target distributed photovoltaic according to the historical power generation amount of the reference centralized photovoltaic, the historical power generation amount of the target distributed photovoltaic and the current power of the reference centralized photovoltaic.

[0007] Optionally, the step of selecting the reference centralized photovoltaic from the centralized photovoltaics in the preset range according to the historical power generation amount of the centralized photovoltaics in the preset range and the historical power generation amount of the target distributed photovoltaic comprises:

[0008] obtaining a centralized photovoltaic power generation amount sequence in a preset time period in the preset range and a target distributed photovoltaic power generation amount sequence in the preset time period according to the historical power generation amount of the centralized photovoltaics in the preset range and the historical power generation amount of the target distributed photovoltaic;

[0009] According to the centralized photovoltaic power generation sequence in the preset range and the preset time period and the target distributed photovoltaic power generation sequence in the preset time period, a correlation coefficient of each centralized photovoltaic power generation in the preset range and the target distributed photovoltaic power generation is obtained.

[0010] According to the correlation coefficient, a reference centralized photovoltaic power generation is selected from the centralized photovoltaic power generations in the preset range.

[0011] Optionally, the obtaining of the correlation coefficient of each centralized photovoltaic power generation in the preset range and the target distributed photovoltaic power generation includes:

[0012] According to the centralized photovoltaic power generation sequence in the preset range and the preset time period, a power generation amount of each centralized photovoltaic power generation at each preset time point in the preset time period and an average power generation amount of each centralized photovoltaic power generation in the preset time period are obtained.

[0013] According to the target distributed photovoltaic power generation sequence in the preset time period, a power generation amount of the target distributed photovoltaic power generation at each preset time point in the preset time period and an average power generation amount of the target distributed photovoltaic power generation in the preset time period are obtained.

[0014] According to the power generation amount of each centralized photovoltaic power generation at each preset time point in the preset time period, the average power generation amount of each centralized photovoltaic power generation in the preset time period, the power generation amount of the target distributed photovoltaic power generation at each preset time point in the preset time period, and the average power generation amount of the target distributed photovoltaic power generation in the preset time period, the correlation coefficient of each centralized photovoltaic power generation in the preset range and the target distributed photovoltaic power generation is obtained.

[0015] Optionally, the selecting of the reference centralized photovoltaic power generation from the centralized photovoltaic power generations in the preset range according to the correlation coefficient includes:

[0016] According to the correlation coefficient, a maximum correlation coefficient in the correlation coefficient is obtained.

[0017] The centralized photovoltaic power generation corresponding to the maximum correlation coefficient is selected as the reference centralized photovoltaic power generation from the centralized photovoltaic power generations in the preset range.

[0018] Optionally, the obtaining of the current power of the target distributed photovoltaic power generation according to the historical power generation amount of the reference centralized photovoltaic power generation, the historical power generation amount of the target distributed photovoltaic power generation, and the current power of the reference centralized photovoltaic power generation includes:

[0019] According to the reference centralized photovoltaic historical power generation and the target distributed photovoltaic historical power generation, reference centralized photovoltaic power generation at a preset time point closest to the current time and target distributed photovoltaic power generation at the preset time point closest to the current time are obtained;

[0020] According to the reference centralized photovoltaic current power and the ratio of the target distributed photovoltaic power generation at the preset time point closest to the current time to the reference centralized photovoltaic power generation at the preset time point closest to the current time, the current power of the target distributed photovoltaic is obtained.

[0021] Optionally, before the current power of the target distributed photovoltaic is obtained according to the reference centralized photovoltaic historical power generation, the target distributed photovoltaic historical power generation and the reference centralized photovoltaic current power, the method further comprises:

[0022] The reference centralized photovoltaic in-service capacity at the preset time point closest to the current time is obtained.

[0023] Correspondingly, the current power of the target distributed photovoltaic is obtained according to the reference centralized photovoltaic historical power generation, the target distributed photovoltaic historical power generation and the reference centralized photovoltaic current power, comprising:

[0024] According to the reference centralized photovoltaic historical power generation and the target distributed photovoltaic historical power generation, reference centralized photovoltaic power generation at a preset time point closest to the current time and target distributed photovoltaic power generation at the preset time point closest to the current time are obtained.

[0025] According to the reference centralized photovoltaic power generation at the preset time point closest to the current time, the target distributed photovoltaic power generation at the preset time point closest to the current time, the reference centralized photovoltaic current power and the reference centralized photovoltaic in-service capacity at the preset time point closest to the current time, the current power of the target distributed photovoltaic is obtained.

[0026] Optionally, the current power of the target distributed photovoltaic is obtained according to the reference centralized photovoltaic power generation at the preset time point closest to the current time, the target distributed photovoltaic power generation at the preset time point closest to the current time, the reference centralized photovoltaic current power and the reference centralized photovoltaic in-service capacity at the preset time point closest to the current time, comprising:

[0027] According to the reference centralized photovoltaic power generation at the preset time point closest to the current time and the target distributed photovoltaic power generation at the preset time point closest to the current time, an in-service capacity ratio is obtained.

[0028] According to the in-service capacity ratio and the reference centralized photovoltaic in-service capacity at the preset time point closest to the current time, the distributed photovoltaic in-service capacity at the preset time point closest to the current time is obtained.

[0029] According to the reference centralized photovoltaic current power, the reference centralized photovoltaic in-service capacity at the preset time point closest to the current time and the distributed photovoltaic in-service capacity at the preset time point closest to the current time, the current power of the target distributed photovoltaic is obtained.

[0030] Optionally, before the reference centralized photovoltaic is selected from the centralized photovoltaic within the preset range according to the centralized photovoltaic historical power generation within the preset range and the target distributed photovoltaic historical power generation, the method further comprises:

[0031] The centralized photovoltaic historical power generation within the initial preset range and the target distributed photovoltaic historical power generation within the initial preset range are obtained.

[0032] The centralized photovoltaic historical power generation within the preset range and the target distributed photovoltaic historical power generation are obtained by performing data cleaning on the centralized photovoltaic historical power generation within the initial preset range and the target distributed photovoltaic historical power generation within the initial preset range.

[0033] In order to achieve the above object, another aspect of the present application discloses a distributed photovoltaic power determination device, which comprises:

[0034] The reference photovoltaic selection module is configured to select the reference centralized photovoltaic from the centralized photovoltaic within the preset range according to the centralized photovoltaic historical power generation within the preset range and the target distributed photovoltaic historical power generation.

[0035] The distributed photovoltaic power determination module is configured to obtain the current power of the target distributed photovoltaic according to the reference centralized photovoltaic historical power generation, the target distributed photovoltaic historical power generation and the reference centralized photovoltaic current power.

[0036] The present application also discloses a computer device, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the method as described above when executing the program.

[0037] The present application also discloses a computer readable medium, which stores a computer program, and the program is executable on the processor to implement the method as described above.

[0038] The distributed photovoltaic power determination method and device provided by the application can select the most relevant centralized photovoltaic power from the centralized photovoltaic power in the preset range according to the centralized photovoltaic historical power in the preset range and the target distributed photovoltaic historical power, so as to prepare for the subsequent step of calculating the distributed photovoltaic power according to the parameters of the most relevant centralized photovoltaic power, thereby making the accuracy of the distributed photovoltaic power determined in the subsequent step higher. The current power of the target distributed photovoltaic power is obtained according to the historical power of the reference centralized photovoltaic power, the target distributed photovoltaic historical power and the current power of the reference centralized photovoltaic power, so as to determine the distributed photovoltaic power by calculation, thereby eliminating the numerous monitoring devices and complex monitoring systems required for collecting the distributed photovoltaic power in the prior art. In summary, the distributed photovoltaic power determination method and device provided by the application can determine the distributed photovoltaic power by calculation, thereby eliminating the need to set more monitoring devices and complex monitoring systems to determine the power of the distributed photovoltaic power, thereby effectively reducing the cost required to determine the power of the distributed photovoltaic power. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0040] Figure 1 A flowchart of a distributed photovoltaic power determination method according to an embodiment of the application is shown;

[0041] Figure 2 A step diagram of selecting a reference centralized photovoltaic power according to an embodiment of the application is shown;

[0042] Figure 3 A step diagram of obtaining the current power of the target distributed photovoltaic power according to an embodiment of the application is shown;

[0043] Figure 4 Another step diagram of obtaining the current power of the target distributed photovoltaic power according to an embodiment of the application is shown;

[0044] Figure 5 Still another step diagram of obtaining the current power of the target distributed photovoltaic power according to an embodiment of the application is shown;

[0045] Figure 6 A module diagram of a distributed photovoltaic power determination device according to an embodiment of the application is shown;

[0046] Figure 7 A structural schematic diagram of a computer device suitable for implementing embodiments of the present application is shown. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0048] The terms "first", "second", and the like as used herein do not specifically refer to order or sequence, nor do they limit the present application. They are used only to distinguish elements or operations from each other.

[0049] The terms "comprise", "include", "have", "contain", and the like as used herein are open terms, i.e., meaning "including but not limited to".

[0050] The term "and / or" as used herein includes any or all combinations of the described items.

[0051] It should be noted that the acquisition, storage, use, processing, etc. of data in the technical solutions of the present application comply with relevant provisions of national laws and regulations.

[0052] Embodiments of the present application disclose a distributed photovoltaic power determination method, as shown in the figure, which specifically includes the following steps: Figure 1

[0053] S101: According to the centralized photovoltaic historical power generation in the preset range and the target distributed photovoltaic historical power generation, a reference centralized photovoltaic is selected from the centralized photovoltaic in the preset range.

[0054] S102: According to the reference centralized photovoltaic historical power generation, the target distributed photovoltaic historical power generation, and the current power of the reference centralized photovoltaic, the current power of the target distributed photovoltaic is obtained.

[0055] ​The distributed photovoltaic power determination method and device provided by the application can select the most relevant centralized photovoltaic power from the centralized photovoltaic power in the preset range according to the centralized photovoltaic historical power and the target distributed photovoltaic historical power in the preset range, so as to prepare for the subsequent step of calculating the distributed photovoltaic power according to the parameters of the most relevant centralized photovoltaic power, thereby making the accuracy of the distributed photovoltaic power determined in the subsequent step higher; the current power of the target distributed photovoltaic power is obtained according to the historical power of the reference centralized photovoltaic power, the target distributed photovoltaic historical power and the current power of the reference centralized photovoltaic power, so that the distributed photovoltaic power is determined by calculation, and the numerous monitoring devices and the complex monitoring system required in the prior art for collecting the distributed photovoltaic power are avoided. In summary, the distributed photovoltaic power determination method and device provided by the application can determine the distributed photovoltaic power by calculation, so that the power of the distributed photovoltaic power is determined without the need of setting numerous monitoring devices and complex monitoring systems, thereby effectively reducing the cost required for determining the distributed photovoltaic power.

[0056] In an optional embodiment, as shown in Figure 2 the centralized photovoltaic historical power in the preset range and the target distributed photovoltaic historical power, the reference centralized photovoltaic power is selected from the centralized photovoltaic power in the preset range, including the following steps:

[0057] S201: The centralized photovoltaic power generation sequence in the preset time period in the preset range and the target distributed photovoltaic power generation sequence in the preset time period are obtained according to the centralized photovoltaic historical power in the preset range and the target distributed photovoltaic historical power.

[0058] S202: The correlation coefficient of each centralized photovoltaic power in the preset range and the target distributed photovoltaic power is obtained according to the centralized photovoltaic power generation sequence in the preset time period in the preset range and the target distributed photovoltaic power generation sequence in the preset time period.

[0059] S203: The reference centralized photovoltaic power is selected from the centralized photovoltaic power in the preset range according to the correlation coefficient.

[0060] For example, the preset range can be determined by a person skilled in the art according to the actual situation, and the embodiments of the application do not limit this. For example, the preset range can be a range of 10 kilometers square centered on the target distributed photovoltaic power.

[0061] Exemplarily, the centralized photovoltaic historical power generation amount and the target distributed photovoltaic historical power generation amount in the preset range can be obtained by, but not limited to, accessing log information of the photovoltaic operation system. It should be noted that the specific obtaining method of the centralized photovoltaic historical power generation amount and the target distributed photovoltaic historical power generation amount in the preset range is a conventional technical means in the art, which will not be described here.

[0062] Exemplarily, the centralized photovoltaic historical power generation amount and the target distributed photovoltaic historical power generation amount in the preset range include the centralized photovoltaic power generation amount and the target distributed photovoltaic historical power generation amount of multiple time points. For example, the centralized photovoltaic historical power generation amount in the preset range can include the daily centralized photovoltaic power generation amount of each day before the current time, and the target distributed photovoltaic historical power generation amount can include the daily target distributed photovoltaic power generation amount of each day before the current time. It should be noted that the determination of the centralized photovoltaic historical power generation amount and the target distributed photovoltaic historical power generation amount in the preset range can be determined by a person skilled in the art according to the actual situation, and the above description is only an example, which does not constitute a limitation.

[0063] Exemplarily, for a certain centralized photovoltaic power generation sequence in a preset time period in the preset range, it can be Q PV ={Q PV,1 ,Q PV,2 ,…,Q PV,n-1}. Wherein, Q represents the power generation, PV represents the centralized photovoltaic, Q PV represents the centralized photovoltaic power generation, Q PV,n-1 represents the daily centralized photovoltaic power generation of the day before the current time, Q PV,1 represents the daily centralized photovoltaic power generation of the earliest day in the preset time period, Q PV,2 represents the daily centralized photovoltaic power generation of the day after the earliest day in the preset time period.

[0064] Exemplarily, for a target distributed photovoltaic power generation sequence in a preset time period in the preset range, it can be Q DG ={Q DG,1 ,Q DG,2 ,…,Q DG,n-1}. Wherein, Q represents the power generation, DG represents the distributed photovoltaic, Q DG represents the distributed photovoltaic power generation, Q DG,n-1 represents the daily distributed photovoltaic power generation of the day before the current time, Q DG,1 represents the daily distributed photovoltaic power generation of the earliest day in the preset time period, Q DG,2 represents the daily distributed photovoltaic power generation of the day after the earliest day in the preset time period.

[0065] For example, the preset time period can be determined as 10 days before the current time.

[0066] It should be noted that the specific implementation of the confirmation of the preset time period and the obtaining of the centralized photovoltaic power generation sequence in the preset time period and the target distributed photovoltaic power generation sequence in the preset time period according to the centralized photovoltaic historical power generation in the preset range and the target distributed photovoltaic historical power generation in the preset range can be determined by a person skilled in the art according to the actual situation, and the above description is only an example, which does not constitute a limitation.

[0067] By obtaining the correlation coefficient of each centralized photovoltaic in the preset range and the target distributed photovoltaic according to the centralized photovoltaic power generation sequence in the preset time period in the preset range and the target distributed photovoltaic power generation sequence in the preset time period, and then selecting a reference centralized photovoltaic from the centralized photovoltaic in the preset range according to the correlation coefficient, a plurality of actual power generation data can be used as input, so that the calculated correlation coefficient can more accurately reflect the correlation between the target distributed photovoltaic and the centralized photovoltaic in the preset range, thereby improving the accuracy of the selected reference centralized photovoltaic.

[0068] In an optional implementation, the obtaining of the correlation coefficient of each centralized photovoltaic in the preset range and the target distributed photovoltaic according to the centralized photovoltaic power generation sequence in the preset time period in the preset range and the target distributed photovoltaic power generation sequence in the preset time period includes:

[0069] obtaining, according to the centralized photovoltaic power generation sequence in the preset time period in the preset range, the power generation of each centralized photovoltaic in the preset range at each preset time point in the preset time period and the average power generation of each centralized photovoltaic in the preset range in the preset time period;

[0070] obtaining, according to the target distributed photovoltaic power generation sequence in the preset time period, the power generation of the target distributed photovoltaic at each preset time point in the preset time period and the average power generation of the target distributed photovoltaic in the preset time period;

[0071] obtaining, according to the power generation of each centralized photovoltaic in the preset range at each preset time point in the preset time period, the average power generation of each centralized photovoltaic in the preset range in the preset time period, the power generation of the target distributed photovoltaic at each preset time point in the preset time period, and the average power generation of the target distributed photovoltaic in the preset time period, the correlation coefficient of each centralized photovoltaic in the preset range and the target distributed photovoltaic.

[0072] Exemplarily, each of the preset time points can be each day within the preset time period. A centralized photovoltaic power generation sequence Q PV = {Q PV,1 , Q PV,2 , …, Q PV,n-1} includes the power generation of the centralized photovoltaic at each of the preset time points within the preset time period in each of the preset ranges, i.e., Q PV,1 , Q PV,2 , …, Q PV,n-1 . A target distributed photovoltaic power generation sequence Q DG = {Q DG,1 , Q DG,2 , …, Q DG,n-1} includes the power generation of the target distributed photovoltaic at each of the preset time points within the preset time period, i.e., Q DG,1 , Q DG,2 , …, Q DG,n-1 . Therefore, according to the centralized photovoltaic power generation sequence within the preset ranges and the preset time period, the power generation of the centralized photovoltaic at each of the preset time points within the preset time period in each of the preset ranges and the average power generation of the centralized photovoltaic within the preset time period in each of the preset ranges are obtained; and according to the target distributed photovoltaic power generation sequence within the preset time period, the power generation of the target distributed photovoltaic at each of the preset time points within the preset time period and the average power generation of the target distributed photovoltaic within the preset time period are obtained, which are conventional technical means in the art and will not be described here.

[0073] It should be noted that the determination of the preset time points can be determined by a person skilled in the art according to actual conditions, and the above description is only an example and does not constitute a limitation.

[0074] Exemplarily, the correlation coefficient of each of the preset ranges of the centralized photovoltaic and the target distributed photovoltaic can be obtained according to the power generation of each of the preset time points of the centralized photovoltaic within the preset time period, the average power generation of the centralized photovoltaic within the preset time period in each of the preset ranges, the power generation of each of the preset time points of the target distributed photovoltaic within the preset time period, and the average power generation of the target distributed photovoltaic within the preset time period, which can be realized by the following Pearson correlation coefficient formula:

[0075]

[0076] wherein ρ(Q DG , Q PV) represents a correlation coefficient, i represents the number of a preset time point (in an embodiment of the present application, can represent the number of a day within a preset time range), n-1 represents the number of a previous preset time point of a current time (in an embodiment of the present application, can represent a previous day of the current time), Q DG,i represents the power generation of the target distributed photovoltaic at the i-th preset time point (in an embodiment of the present application, can represent the daily power generation of the target distributed photovoltaic within the i-th day), Q PV,i represents the power generation of the centralized photovoltaic at the i-th preset time point (in an embodiment of the present application, can represent the daily power generation of the centralized photovoltaic within the i-th day), represents the average power generation of the target distributed photovoltaic within the preset time period, represents the average power generation of the centralized photovoltaic within the preset time period.

[0077] It should be noted that the specific implementation of the correlation coefficient of the centralized photovoltaic and the target distributed photovoltaic within each of the preset ranges is determined by the person skilled in the art according to the actual situation, and the above description is only an example, which does not constitute a limitation.

[0078] By obtaining the correlation coefficient of the centralized photovoltaic and the target distributed photovoltaic within each of the preset ranges according to the power generation of the centralized photovoltaic at each of the preset time points within the preset time period in each of the preset ranges, the average power generation of the centralized photovoltaic within the preset time period in each of the preset ranges, the power generation of the target distributed photovoltaic at each of the preset time points within the preset time period, and the average power generation of the target distributed photovoltaic within the preset time period, the accuracy of the obtained correlation coefficient can be further improved.

[0079] In an optional embodiment, the selecting, according to the correlation coefficient, a reference centralized photovoltaic from the centralized photovoltaics within the preset range comprises:

[0080] According to the correlation coefficient, obtaining the maximum correlation coefficient in the correlation coefficient;

[0081] Selecting, as the reference centralized photovoltaic, the centralized photovoltaic corresponding to the maximum correlation coefficient from the centralized photovoltaics within the preset range.

[0082] By selecting the centralized photovoltaic corresponding to the maximum correlation coefficient in the preset range as the reference centralized photovoltaic, the reference centralized photovoltaic is closest to the target distributed photovoltaic in characteristics, so as to improve the accuracy of calculating the power of the distributed photovoltaic according to the data of the reference centralized photovoltaic.

[0083] In an optional embodiment, as shown in Figure 3 The current power of the target distributed photovoltaic is obtained according to the historical power generation of the reference centralized photovoltaic, the historical power generation of the target distributed photovoltaic, and the current power of the reference centralized photovoltaic, and includes the following steps:

[0084] S301: The power generation of the reference centralized photovoltaic at a preset time point closest to the current time and the power generation of the target distributed photovoltaic at the preset time point closest to the current time are obtained according to the historical power generation of the reference centralized photovoltaic and the historical power generation of the target distributed photovoltaic.

[0085] S302: The current power of the target distributed photovoltaic is obtained according to the current power of the reference centralized photovoltaic and the ratio of the power generation of the target distributed photovoltaic at the preset time point closest to the current time to the power generation of the reference centralized photovoltaic at the preset time point closest to the current time.

[0086] For example, the preset time point closest to the current time can be determined by a person skilled in the art according to actual conditions, for example, but is not limited to, the previous day of the current time.

[0087] For example, the power generation of the reference centralized photovoltaic at a preset time point closest to the current time and the power generation of the target distributed photovoltaic at the preset time point closest to the current time are obtained according to the historical power generation of the reference centralized photovoltaic and the historical power generation of the target distributed photovoltaic, which is a conventional technical means in the art, and will not be described here.

[0088] For example, the current power of the reference centralized photovoltaic can be obtained by accessing the background record information of the centralized photovoltaic, but is not limited to this. It should be noted that the current power of the reference centralized photovoltaic can be obtained by a person skilled in the art according to actual conditions, and the above description is only an example and does not limit this.

[0089] For example, the current power of the target distributed photovoltaic is obtained according to the current power of the reference centralized photovoltaic and the ratio of the power generation of the target distributed photovoltaic at the preset time point closest to the current time to the power generation of the reference centralized photovoltaic at the preset time point closest to the current time, which can be realized by the following formula:

[0090]

[0091] wherein, represents the current power of the target distributed photovoltaic (in the embodiments of the present application, it can represent the daily power of the target distributed photovoltaic), cal represents that the data of the variable to which the superscript belongs is obtained by calculation, real represents that the data of the variable to which the superscript belongs is real data, represents the current power of the reference centralized photovoltaic (in the embodiments of the present application, it can represent the daily power of the reference centralized photovoltaic), Q DG,i-1 represents the power generation of the target distributed photovoltaic at the preset time point closest to the current time (in the embodiments of the present application, it can represent the power generation of the target distributed photovoltaic of the previous day), Q PV,i-1 represents the power generation of the reference centralized photovoltaic at the preset time point closest to the current time (in the embodiments of the present application, it can represent the power generation of the reference centralized photovoltaic of the previous day).

[0092] It should be noted that the specific implementation of obtaining the current power of the target distributed photovoltaic according to the ratio of the current power of the reference centralized photovoltaic to the power generation of the target distributed photovoltaic at the preset time point closest to the current time and the power generation of the reference centralized photovoltaic at the preset time point closest to the current time can be determined by those skilled in the art according to actual conditions, and the above description is only an example and does not constitute a limitation.

[0093] By obtaining the current power of the target distributed photovoltaic according to the ratio of the current power of the reference centralized photovoltaic to the power generation of the target distributed photovoltaic at the preset time point closest to the current time and the power generation of the reference centralized photovoltaic at the preset time point closest to the current time, the current power of the target distributed photovoltaic can be determined according to the mapping relationship between the reference centralized photovoltaic and the target distributed photovoltaic, thereby improving the accuracy of the determined current power of the target distributed photovoltaic, and only through calculation, the numerous monitoring devices and complex monitoring systems required for collecting the power of the distributed photovoltaic in the prior art are eliminated, and the cost required for determining the power of the distributed photovoltaic is reduced.

[0094] In an optional embodiment, before obtaining the current power of the target distributed photovoltaic according to the historical power generation of the reference centralized photovoltaic, the historical power generation of the target distributed photovoltaic, and the current power of the reference centralized photovoltaic, the method further comprises:

[0095] acquiring the in-service capacity of the reference centralized photovoltaic at the preset time point closest to the current time;

[0096] Correspondingly, as shown in Figure 4 obtaining the current power of the target distributed photovoltaic according to the historical power generation of the reference centralized photovoltaic, the historical power generation of the target distributed photovoltaic, and the current power of the reference centralized photovoltaic comprises the following steps:

[0097] S401: Obtain the reference centralized PV power at the preset time point closest to the current time and the target distributed PV power at the preset time point closest to the current time according to the reference centralized PV historical power generation and the target distributed PV historical power generation.

[0098] S402: Obtain the current power of the target distributed PV according to the reference centralized PV power at the preset time point closest to the current time, the target distributed PV power at the preset time point closest to the current time, the reference centralized PV current power and the reference centralized PV in-service capacity at the preset time point closest to the current time.

[0099] For example, the reference centralized PV power at the preset time point closest to the current time and the target distributed PV power at the preset time point closest to the current time are obtained according to the reference centralized PV historical power generation and the target distributed PV historical power generation, which is a routine technical means in the art and will not be described here.

[0100] The current power of the target distributed PV is obtained according to the reference centralized PV power at the preset time point closest to the current time, the target distributed PV power at the preset time point closest to the current time, the reference centralized PV current power and the reference centralized PV in-service capacity at the preset time point closest to the current time, which further takes into account the mapping relationship between the reference centralized PV and the target distributed PV power generation when calculating the current power of the target distributed PV by introducing the reference centralized PV in-service capacity as an input, thereby further improving the accuracy of the obtained current power of the target distributed PV.

[0101] In an optional embodiment, as shown in Figure 5 The current power of the target distributed PV is obtained according to the reference centralized PV power at the preset time point closest to the current time, the target distributed PV power at the preset time point closest to the current time, the reference centralized PV current power and the reference centralized PV in-service capacity at the preset time point closest to the current time, which further takes into account the mapping relationship between the reference centralized PV and the target distributed PV power generation when calculating the current power of the target distributed PV by introducing the reference centralized PV in-service capacity as an input, thereby further improving the accuracy of the obtained current power of the target distributed PV.

[0102] S501: Obtain the in-service capacity ratio according to the reference centralized PV power at the preset time point closest to the current time and the target distributed PV power at the preset time point closest to the current time.

[0103] S502: Obtain the distributed PV in-service capacity at the preset time point closest to the current time according to the in-service capacity ratio and the reference centralized PV in-service capacity at the preset time point closest to the current time.

[0104] S503: obtaining the current power of the target distributed photovoltaic according to the reference centralized photovoltaic current power, the reference centralized photovoltaic in-service capacity at the preset time point closest to the current time, and the distributed photovoltaic in-service capacity at the preset time point closest to the current time.

[0105] For example, the in-service capacity ratio can be obtained according to the reference centralized photovoltaic power at the preset time point closest to the current time and the target distributed photovoltaic power at the preset time point closest to the current time, and the in-service capacity ratio can be obtained by the following formula:

[0106] k i-1 = Q PV,i-1 / Q DG,i-1

[0107] wherein, Q PV,i-1 represents the reference centralized photovoltaic power at the preset time point closest to the current time (in the embodiment of the present application, the reference centralized photovoltaic power of the previous day can be represented), Q DG,i-1 represents the target distributed photovoltaic power at the preset time point closest to the current time (in the embodiment of the present application, the target distributed photovoltaic power of the previous day can be represented), k i-1 represents the in-service capacity ratio. The in-service capacity ratio can be calculated by the above formula, and the in-service capacity ratio can be obtained by deducing the existing formula.

[0108] For example, the distributed photovoltaic in-service capacity at the preset time point closest to the current time can be obtained according to the in-service capacity ratio and the reference centralized photovoltaic in-service capacity at the preset time point closest to the current time, and the distributed photovoltaic in-service capacity at the preset time point closest to the current time can be obtained by the following formula:

[0109]

[0110] wherein, M DG,i-1 represents the distributed photovoltaic in-service capacity at the preset time point closest to the current time, and M PV,i-1 represents the reference centralized photovoltaic in-service capacity at the preset time point closest to the current time.

[0111] For example, the current power of the target distributed photovoltaic can be obtained according to the reference centralized photovoltaic current power, the reference centralized photovoltaic in-service capacity at the preset time point closest to the current time, and the distributed photovoltaic in-service capacity at the preset time point closest to the current time, and the current power of the target distributed photovoltaic can be obtained by the following formula:

[0112]

[0113] It should be noted that the specific implementation of obtaining the current power of the target distributed photovoltaic according to the reference centralized photovoltaic current power, the reference centralized photovoltaic capacity in operation at the preset time point closest to the current time, and the distributed photovoltaic capacity in operation at the preset time point closest to the current time can be determined by a person skilled in the art according to actual conditions, and the above description is only an example and does not constitute a limitation.

[0114] By obtaining the current power of the target distributed photovoltaic according to the reference centralized photovoltaic current power, the reference centralized photovoltaic capacity in operation at the preset time point closest to the current time, and the distributed photovoltaic capacity in operation at the preset time point closest to the current time, the mapping relationship between the reference centralized photovoltaic and the target distributed photovoltaic power generation can be further considered when calculating the current power of the target distributed photovoltaic, thereby further improving the accuracy of the obtained current power of the target distributed photovoltaic.

[0115] In an optional embodiment, before the reference centralized photovoltaic is selected from the centralized photovoltaics in the preset range according to the centralized photovoltaic historical power generation in the preset range and the target distributed photovoltaic historical power generation, the method further comprises:

[0116] obtaining the centralized photovoltaic historical power generation in the initial preset range and the target distributed photovoltaic historical power generation in the initial preset range;

[0117] performing data cleaning on the centralized photovoltaic historical power generation in the initial preset range and the target distributed photovoltaic historical power generation in the initial preset range to obtain the centralized photovoltaic historical power generation in the preset range and the target distributed photovoltaic historical power generation.

[0118] For example, the data cleaning includes but is not limited to using a spline interpolation method or a similar day linear regression method to repair missing data, or setting upper and lower limits of data to distinguish the data, and then using a spline interpolation method to correct the data exceeding the upper and lower limits. It should be noted that the specific operation of data cleaning can be determined by a person skilled in the art according to actual conditions, and the above description is only an example and does not constitute a limitation.

[0119] By performing data cleaning on the centralized photovoltaic historical power generation in the initial preset range and the target distributed photovoltaic historical power generation in the initial preset range to obtain the centralized photovoltaic historical power generation in the preset range and the target distributed photovoltaic historical power generation, the possibility of error or abnormal data in the centralized photovoltaic historical power generation in the preset range and the target distributed photovoltaic historical power generation can be reduced, thereby improving the accuracy of the distributed photovoltaic power determined in the subsequent steps.

[0120] Based on the same principle, the embodiment of the application discloses a distributed photovoltaic power determination device 600, as shown in the figure, which comprises: Figure 6

[0121] Referring to the photovoltaic selection module 601, it is used to select a reference centralized photovoltaic from the centralized photovoltaic within the preset range according to the historical power generation of the centralized photovoltaic within the preset range and the historical power generation of the target distributed photovoltaic.

[0122] The distributed photovoltaic power determination module 602 is used to obtain the current power of the target distributed photovoltaic according to the historical power generation of the reference centralized photovoltaic, the historical power generation of the target distributed photovoltaic, and the current power of the reference centralized photovoltaic.

[0123] In an optional embodiment, the reference photovoltaic selection module 601 is used to:

[0124] According to the historical power generation of the centralized photovoltaic within the preset range and the historical power generation of the target distributed photovoltaic, the centralized photovoltaic power generation sequence within the preset time period within the preset range and the target distributed photovoltaic power generation sequence within the preset time period are obtained;

[0125] According to the centralized photovoltaic power generation sequence within the preset time period within the preset range and the target distributed photovoltaic power generation sequence within the preset time period, the correlation coefficient of each centralized photovoltaic within the preset range and the target distributed photovoltaic is obtained;

[0126] According to the correlation coefficient, the reference centralized photovoltaic is selected from the centralized photovoltaic within the preset range.

[0127] In an optional embodiment, the reference photovoltaic selection module 601 comprises a correlation coefficient determination unit, which is used to:

[0128] According to the centralized photovoltaic power generation sequence within the preset time period within the preset range, the power generation of each preset time point within the preset time period and the average power generation of each centralized photovoltaic within the preset range within the preset time period are obtained;

[0129] According to the target distributed photovoltaic power generation sequence within the preset time period, the power generation of each preset time point within the preset time period and the average power generation of the target distributed photovoltaic within the preset time period are obtained;

[0130] ​According to the power generation of the centralized photovoltaic in each of the preset ranges at each preset time point in the preset time period, the average power generation of the centralized photovoltaic in each of the preset ranges in the preset time period, the power generation of the target distributed photovoltaic at each preset time point in the preset time period, and the average power generation of the target distributed photovoltaic in the preset time period, a correlation coefficient of the centralized photovoltaic in each of the preset ranges and the target distributed photovoltaic is obtained.

[0131] In an optional implementation, the reference photovoltaic selection module 601 comprises a reference centralized photovoltaic selection unit, which is configured to:

[0132] According to the correlation coefficient, a maximum correlation coefficient in the correlation coefficient is obtained.

[0133] The centralized photovoltaic corresponding to the maximum correlation coefficient is selected from the centralized photovoltaics in the preset ranges as the reference centralized photovoltaic.

[0134] In an optional implementation, the distributed photovoltaic power determination module 602 is configured to:

[0135] According to the historical power generation of the reference centralized photovoltaic and the historical power generation of the target distributed photovoltaic, the power generation of the reference centralized photovoltaic at a preset time point closest to the current time and the power generation of the target distributed photovoltaic at the preset time point closest to the current time are obtained.

[0136] According to the current power of the reference centralized photovoltaic and the ratio of the power generation of the target distributed photovoltaic at the preset time point closest to the current time to the power generation of the reference centralized photovoltaic at the preset time point closest to the current time, the current power of the target distributed photovoltaic is obtained.

[0137] In an optional implementation, the method further comprises obtaining the operating capacity of the reference centralized photovoltaic, which is configured to:

[0138] The operating capacity of the reference centralized photovoltaic at a preset time point closest to the current time is obtained.

[0139] Correspondingly, the current power of the target distributed photovoltaic is obtained according to the historical power generation of the reference centralized photovoltaic, the historical power generation of the target distributed photovoltaic, and the current power of the reference centralized photovoltaic, which comprises:

[0140] According to the historical power generation of the reference centralized photovoltaic and the historical power generation of the target distributed photovoltaic, the power generation of the reference centralized photovoltaic at a preset time point closest to the current time and the power generation of the target distributed photovoltaic at the preset time point closest to the current time are obtained.

[0141] According to the reference centralized photovoltaic power generation amount at the preset time point closest to the current time, the target distributed photovoltaic power generation amount at the preset time point closest to the current time, the reference centralized photovoltaic current power and the reference centralized photovoltaic on-line capacity at the preset time point closest to the current time, the current power of the target distributed photovoltaic is obtained.

[0142] In an optional implementation, the distributed photovoltaic power determination module 602 is configured to:

[0143] According to the reference centralized photovoltaic power generation amount at the preset time point closest to the current time and the target distributed photovoltaic power generation amount at the preset time point closest to the current time, an on-line capacity ratio is obtained.

[0144] According to the on-line capacity ratio and the reference centralized photovoltaic on-line capacity at the preset time point closest to the current time, the distributed photovoltaic on-line capacity at the preset time point closest to the current time is obtained.

[0145] According to the reference centralized photovoltaic current power, the reference centralized photovoltaic on-line capacity at the preset time point closest to the current time and the distributed photovoltaic on-line capacity at the preset time point closest to the current time, the current power of the target distributed photovoltaic is obtained.

[0146] In an optional implementation, the distributed photovoltaic power determination device 600 further comprises a data cleaning module configured to:

[0147] The initial centralized photovoltaic historical power generation amount within the preset range and the initial target distributed photovoltaic historical power generation amount are obtained.

[0148] The initial centralized photovoltaic historical power generation amount within the preset range and the initial target distributed photovoltaic historical power generation amount are subjected to data cleaning to obtain the centralized photovoltaic historical power generation amount within the preset range and the target distributed photovoltaic historical power generation amount.

[0149] Since the principle of solving problems of the distributed photovoltaic power determination device 600 is similar to the above method, the implementation of the distributed photovoltaic power determination device 600 can be referred to the implementation of the above method, which will not be described here.

[0150] The system, device, module or unit illustrated in the above embodiments can be specifically implemented by a computer chip or entity, or by a product with certain functions. A typical implementation device is a computer device, and specifically, the computer device can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an electronic mail device, a game console, a tablet computer, a wearable device or a combination of any of these devices.

[0151] In one typical example, a computer device comprises specifically a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the method as described above when executing the program.

[0152] Reference is made below to Figure 7 which shows a structural diagram of a computer device 700 suitable for use in implementing embodiments of the present application.

[0153] As shown in Figure 7 , the computer device 700 comprises a central processing unit (CPU) 701 which can perform various appropriate operations and processes in accordance with a program stored in a read only memory (ROM) 702 or a program loaded from a storage section 708 into a random access memory (RAM) 703. In the RAM 703, various programs and data required for the operation of the system 700 are also stored. The CPU 701, the ROM 702, and the RAM 703 are connected to each other through a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0154] The following components are connected to the I / O interface 705: an input section 706 including a keyboard, a mouse, etc.; an output section 707 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 708 including a hard disk, etc.; and a communication section 709 including a network interface card such as a LAN card, a modem, etc. The communication section 709 performs communication processing via a network such as the Internet. A drive 710 is also connected to the I / O interface 705 as necessary. A removable recording medium 711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 710 as necessary, so that a computer program read therefrom is installed in the storage section 708 as necessary.

[0155] In particular, the processes described above with reference to the flowcharts can be implemented as a computer software program in accordance with embodiments of the present application. For example, embodiments of the present application include a computer program product comprising a computer program tangibly embodied on a machine readable medium, the computer program including program code for executing the methods illustrated by the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via the communication section 709, and / or installed from the removable recording medium 711.

[0156] Computer-readable media includes permanent and non-permanent, movable and non-movable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible to a computing device. According to the definition herein, computer-readable media does not include transitory media such as modulated data signals and carriers.

[0157] For the convenience of description, the above device is described as various units described respectively in function. Of course, in the implementation of the present application, the functions of each unit can be implemented in the same or more software and / or hardware.

[0158] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the computer or other programmable data processing device produce a device that implements the functions specified in the flowchart and / or block diagram. Figure 1 The functions specified in one or more flows and / or blocks Figure 1 The functions specified in one or more flows and / or blocks

[0159] These computer program instructions can also be stored in a computer-readable memory that can guide the computer or other programmable data processing device to work in a specific way, so that the instructions stored in the computer-readable memory produce a product including instruction devices that implement the functions specified in the flowchart and / or block diagram. Figure 1 The functions specified in one or more flows and / or blocks Figure 1 The functions specified in one or more flows and / or blocks

[0160] These computer program instructions can also be loaded into computer or other programmable data processing devices, so that a series of operational steps are performed on the computer or other programmable data processing devices to generate a computer-implemented process, thus the instructions executed on the computer or other programmable data processing devices provide the function implemented in the flow Figure 1 one or more flows and / or blocks Figure 1 one or more blocks or multiple blocks.

[0161] It should also be noted that the terms "comprising", "comprises", "including", "includes" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article or apparatus. An element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article or apparatus that comprises the recited element.

[0162] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system or a computer program product. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer-usable program code.

[0163] The present application can be described in the general context of computer-executable instructions, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform particular tasks or implement particular abstract data types. The present application can also be practiced in distributed computing environments where tasks are performed by remote processing devices that are connected through a communication network. In a distributed computing environment, program modules can be located in both local and remote computer storage media including memory storage devices.

[0164] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between each of the embodiments can be referred to each other, and each of the embodiments focuses on the difference from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiment.

[0165] The above merely provides an example of the present application, but is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the scope of claims of the present application.

Claims

1. A method for determining distributed photovoltaic power, characterized in that, include: Based on the historical power generation of centralized photovoltaic power generation within the preset range and the historical power generation of target distributed photovoltaic power generation, a reference centralized photovoltaic power generation system is selected from the centralized photovoltaic power generation system within the preset range. The current power of the target distributed photovoltaic system is obtained by referring to the historical power generation of centralized photovoltaic systems, the historical power generation of the target distributed photovoltaic system, and the current power of the reference centralized photovoltaic system. Before obtaining the current power of the target distributed photovoltaic system based on the historical power generation of a reference centralized photovoltaic system, the historical power generation of the target distributed photovoltaic system, and the current power of the reference centralized photovoltaic system, the process further includes: Obtain the reference centralized photovoltaic capacity at the preset time point closest to the current time; The step of obtaining the current power of the target distributed photovoltaic system based on the historical power generation of a reference centralized photovoltaic system, the historical power generation of the target distributed photovoltaic system, and the current power of a reference centralized photovoltaic system includes: Based on the historical power generation of the reference centralized photovoltaic system and the historical power generation of the target distributed photovoltaic system, the historical power generation of the reference centralized photovoltaic system and the historical power generation of the target distributed photovoltaic system at the preset time point closest to the current time are obtained. The in-service capacity ratio is obtained based on the reference centralized photovoltaic power generation at the preset time point closest to the current time and the target distributed photovoltaic power generation at the preset time point closest to the current time. Based on the ratio of operational capacity and the reference centralized photovoltaic operational capacity at the preset time point closest to the current time, the distributed photovoltaic operational capacity at the preset time point closest to the current time is obtained; The current power of the target distributed photovoltaic system is obtained based on the current power of the reference centralized photovoltaic system, the operational capacity of the reference centralized photovoltaic system at the nearest preset time point, and the operational capacity of the distributed photovoltaic system at the nearest preset time point. The current power of the target distributed photovoltaic system is obtained based on the current power of the reference centralized photovoltaic system, the operational capacity of the reference centralized photovoltaic system at the nearest preset time point, and the operational capacity of the distributed photovoltaic system at the nearest preset time point. This can be achieved using the following formula: in, This indicates the current power of the target distributed photovoltaic system. M represents the current power output of a centralized photovoltaic system. DG,i-1 M represents the distributed photovoltaic (PV) capacity in operation at the nearest preset time point to the current time. PV,i-1 This represents the reference centralized photovoltaic capacity at the preset time point closest to the current time.

2. The method according to claim 1, characterized in that, The step of selecting a reference centralized photovoltaic (PV) system from the centralized PV systems within the preset range based on the historical power generation of centralized PV systems and the historical power generation of the target distributed PV system includes: Based on the historical power generation of centralized photovoltaic power and the historical power generation of target distributed photovoltaic power within the preset range, a sequence of centralized photovoltaic power generation within a preset time period and a sequence of target distributed photovoltaic power generation within a preset time period are obtained. Based on the sequence of centralized photovoltaic power generation within a preset time period and the sequence of target distributed photovoltaic power generation within a preset time period, the correlation coefficient between each centralized photovoltaic power generation within the preset time period and the target distributed photovoltaic power generation is obtained. Based on the correlation coefficient, a reference centralized photovoltaic system is selected from centralized photovoltaic systems within a preset range.

3. The method according to claim 2, characterized in that, The step of obtaining the correlation coefficient between each centralized photovoltaic (PV) power generation sequence within a preset time period and the target distributed PV power generation sequence within a preset time period, based on the centralized PV power generation sequence within the preset range and the target distributed PV power generation sequence within the preset time period, includes: Based on the sequence of centralized photovoltaic power generation within a preset time period within the preset range, the power generation of each centralized photovoltaic power generation within the preset range at each preset time point within the preset time period, and the average power generation of each centralized photovoltaic power generation within the preset range within the preset time period are obtained. Based on the target distributed photovoltaic power generation sequence within the preset time period, the power generation of the target distributed photovoltaic power generation at each preset time point within the preset time period, and the average power generation of the target distributed photovoltaic power generation within the preset time period are obtained. Based on the power generation of each centralized photovoltaic power station within a preset range at each preset time point within a preset time period, the average power generation of each centralized photovoltaic power station within a preset range within a preset time period, the power generation of the target distributed photovoltaic power station at each preset time point within a preset time period, and the average power generation of the target distributed photovoltaic power station within a preset time period, the correlation coefficient between each centralized photovoltaic power station within a preset range and the target distributed photovoltaic power station is obtained.

4. The method according to claim 2, characterized in that, The step of selecting a reference centralized photovoltaic system from centralized photovoltaic systems within a preset range based on the correlation coefficient includes: Based on the correlation coefficients, the maximum correlation coefficient among the correlation coefficients is obtained; The centralized photovoltaic system with the highest correlation coefficient is selected from the centralized photovoltaic systems within the preset range as the reference centralized photovoltaic system.

5. The method according to claim 1, characterized in that, The step of obtaining the current power of the target distributed photovoltaic system based on the historical power generation of a reference centralized photovoltaic system, the historical power generation of the target distributed photovoltaic system, and the current power of a reference centralized photovoltaic system includes: Based on the historical power generation of the reference centralized photovoltaic system and the historical power generation of the target distributed photovoltaic system, the historical power generation of the reference centralized photovoltaic system and the historical power generation of the target distributed photovoltaic system at the preset time point closest to the current time are obtained. The current power of the target distributed photovoltaic system is obtained by comparing the current power of the reference centralized photovoltaic system with the ratio of the target distributed photovoltaic power generation at the preset time point closest to the current time to the reference centralized photovoltaic power generation at the preset time point closest to the current time.

6. The method according to claim 1, characterized in that, Before selecting a reference centralized photovoltaic (PV) from the centralized PV within the preset range based on the historical power generation of centralized PV within the preset range and the historical power generation of the target distributed PV, the method further includes: Obtain the historical power generation of centralized photovoltaic power and the historical power generation of distributed photovoltaic power within the initial preset range; Data cleaning is performed on the historical power generation of centralized photovoltaic power generation and the historical power generation of distributed photovoltaic power generation within the initial preset range to obtain the historical power generation of centralized photovoltaic power generation and the historical power generation of distributed photovoltaic power generation within the preset range.

7. A distributed photovoltaic power determination device, characterized in that, include: The reference photovoltaic selection module is used to select a reference centralized photovoltaic system from the centralized photovoltaic systems within the preset range based on the historical power generation of centralized photovoltaic systems and the historical power generation of target distributed photovoltaic systems within the preset range. The distributed photovoltaic power determination module is used to obtain the current power of the target distributed photovoltaic based on the historical power generation of a reference centralized photovoltaic system, the historical power generation of the target distributed photovoltaic system, and the current power of the reference centralized photovoltaic system. The reference centralized photovoltaic in-operation capacity acquisition module is used to obtain the reference centralized photovoltaic in-operation capacity at the preset time point closest to the current time; The distributed photovoltaic power determination module is specifically used for: Based on the historical power generation of the reference centralized photovoltaic system and the historical power generation of the target distributed photovoltaic system, the historical power generation of the reference centralized photovoltaic system and the historical power generation of the target distributed photovoltaic system at the preset time point closest to the current time are obtained. The in-service capacity ratio is obtained based on the reference centralized photovoltaic power generation at the preset time point closest to the current time and the target distributed photovoltaic power generation at the preset time point closest to the current time. Based on the ratio of operational capacity and the reference centralized photovoltaic operational capacity at the preset time point closest to the current time, the distributed photovoltaic operational capacity at the preset time point closest to the current time is obtained; The current power of the target distributed photovoltaic system is obtained based on the current power of the reference centralized photovoltaic system, the operational capacity of the reference centralized photovoltaic system at the nearest preset time point, and the operational capacity of the distributed photovoltaic system at the nearest preset time point. The current power of the target distributed photovoltaic system is obtained based on the current power of the reference centralized photovoltaic system, the operational capacity of the reference centralized photovoltaic system at the nearest preset time point, and the operational capacity of the distributed photovoltaic system at the nearest preset time point, and is achieved by the following formula: in, This indicates the current power of the target distributed photovoltaic system. M represents the current power output of a centralized photovoltaic system. DG,i-1 M represents the distributed photovoltaic (PV) capacity in operation at the nearest preset time point to the current time. PV,i-1 This represents the reference centralized photovoltaic capacity at the preset time point closest to the current time.

8. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the method as described in any one of claims 1-6.

9. A computer-readable medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1-6.

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