Method and device for determining complementarity of renewable energy sources, equipment and medium

Abstract

The invention discloses a renewable energy complementarity determination method and device, equipment and a medium, and relates to the field of renewable energy utilization. The renewable energy complementarity determination method comprises the following steps: acquiring output power of each renewable energy source at different moments; calculating the power variation of each renewable energy source at each adjacent moment according to the output power of each renewable energy source at different moments; according to the power variation of each renewable energy source at each adjacent moment, determining whether there is a renewable energy source determination index with opposite variation trends at each adjacent moment; and calculating the complementarity index of the multiple renewable energy sources according to the judgment index for judging whether the renewable energy sources with opposite change trends exist at each adjacent moment. According to the invention, the complementarity of a plurality of renewable energy sources is evaluated.

Description

Technical Field

[0001] The present application relates to the field of renewable energy utilization, and in particular to a method, device, equipment and medium for determining the complementarity of renewable energy. Background Art

[0002] Renewable energy is gradually diversified and becoming increasingly competitive. It is of great significance to promote the development of wind power and photovoltaic power generation bases in accordance with local conditions, promote the construction of large-scale hydropower bases in a scientific and orderly manner, steadily develop biomass power generation, geothermal power generation, tidal power generation, and carry out tidal energy and wave energy generation.

[0003] However, most renewable energy generation has significant uncertainty. As the proportion of renewable energy increases, the requirements for the flexibility, safety and stability of the power system when connected to the grid are also increasing. The coordination of multiple renewable energy generation can make the total output smoother, that is, there is complementarity. The existing complementary utilization is mostly the analysis of two renewable energy sources, and the correlation coefficient is the most commonly used method for analyzing complementarity. Liu Yi et al. used the Pearson correlation coefficient to determine the spatiotemporal complementarity of wind and solar power in a wide area under different combination scenarios. Xu et al. used the Kendall correlation coefficient to analyze the spatiotemporal distribution characteristics of wind and solar power complementarity. Sun et al. used the Kendall correlation coefficient to analyze the complementarity of wind power and photovoltaic power. Miguel Gonzalez-Salazar et al. used the Spearman correlation coefficient to analyze the complementarity of hydropower-wind power, wind power-photovoltaic power, and hydropower-photovoltaic power respectively. Liliana Rusu et al. used the Pearson correlation coefficient to analyze the complementarity of wind power and wave power in the Black Sea Basin. However, the commonly used correlation coefficient can only evaluate the complementarity of two renewable energy sources, which cannot meet the needs of the complementarity evaluation of multiple renewable energy sources.

[0004] Nowadays, the prospect of complementary applications of multiple renewable energy sources has emerged, and there is an urgent need to evaluate the complementarity of multiple renewable energy sources. Summary of the invention

[0005] The purpose of this application is to provide a method, device, equipment and medium for determining the complementarity of renewable energy sources, which can evaluate the complementarity of multiple renewable energy sources.

[0006] To achieve the above objectives, this application provides the following solutions:

[0007] In a first aspect, the present application provides a method for determining renewable energy complementarity, the method for determining renewable energy complementarity comprising:

[0008] Obtain the output power of each renewable energy source at different times;

[0009] According to the output power of each renewable energy source at different times, the power change of each renewable energy source at each adjacent time is calculated;

[0010] According to the power change of each renewable energy source at each adjacent moment, a determination index is determined as to whether there is a renewable energy source with an opposite change trend at each adjacent moment;

[0011] The complementarity index of multiple renewable energy sources is calculated based on the determination index of whether there are renewable energy sources with opposite change trends at each adjacent moment.

[0012] Optionally, the formula for calculating the power change of each renewable energy source at each adjacent moment is:

[0013] Δp i (t') = p i (t)-p i (t-1);

[0014] Among them, Δp i (t') is the power change of the i-th renewable energy at the adjacent time t', p i (t) is the output power of the i-th renewable energy at time t, p i (t-1) is the output power of the i-th renewable energy at time t-1.

[0015] Optionally, according to the power change of each renewable energy source at each adjacent moment, the formula for determining whether there is a renewable energy source with an opposite change trend at each adjacent moment is:

[0016]

[0017] Wherein, a(t') is the determination index of whether there is a renewable energy with opposite change trend in the adjacent time of t'. When a(t') = 1, it indicates that there is a renewable energy with opposite change trend in the adjacent time of t'. When a(t') = 0, it indicates that there is no renewable energy with opposite change trend in the adjacent time of t'. Δp j (t') is the power change of the jth renewable energy at the adjacent time t', Δp k (t') is the power change of the kth renewable energy at the adjacent time t', m is the number of renewable energy types, Indicates existence.

[0018] Optionally, according to the determination index of whether there is a renewable energy source with an opposite change trend at each adjacent moment, the complementarity index of the multiple renewable energy sources is calculated, specifically including:

[0019] According to the determination index of whether there are renewable energy sources with opposite change trends at each adjacent moment, the total number of events in which the output power of renewable energy sources is complementary and the total number of events in which the output power of renewable energy sources is not complementary are calculated;

[0020] The complementarity index of multiple renewable energy sources is calculated based on the total number of events in which the output power of renewable energy sources is complementary and the total number of events in which the output power of renewable energy sources is not complementary.

[0021] Optionally, according to the determination index of whether there is a renewable energy source with an opposite change trend at each adjacent moment, the total number of events in which the output power of renewable energy sources is complementary and the total number of events in which the output power of renewable energy sources is not complementary are calculated, specifically including:

[0022] According to the determination index of whether there is a renewable energy with opposite change trend at each adjacent moment, the total number of events in which the output power of renewable energy is complementary is calculated using the following formula;

[0023]

[0024] Among them, a(t') is the determination index of whether there is a renewable energy with opposite change trend in the adjacent time of t', r is the total number of events in which the output power of renewable energy is complementary, and N is the total number of time;

[0025] According to the total number of events in which the output power of renewable energy sources is complementary, the total number of events in which the output power of renewable energy sources is not complementary is calculated using the following formula;

[0026] u=Nr-1;

[0027] Where u is the total number of events where the renewable energy output power is not complemented.

[0028] Optionally, the formula for calculating the complementarity index of multiple renewable energy sources is:

[0029]

[0030] Among them, c is the complementarity index of multiple renewable energy sources, r is the total number of events in which the output power of renewable energy sources is complementary, N is the total number of moments, and u is the total number of events in which the output power of renewable energy sources is not complementary.

[0031] In a second aspect, the present application provides a device for determining renewable energy complementarity, the device for determining renewable energy complementarity applying the above-mentioned method for determining renewable energy complementarity, the device for determining renewable energy complementarity comprising:

[0032] An output power acquisition module is used to acquire the output power of each renewable energy source at different times;

[0033] A power variation calculation module is used to calculate the power variation of each renewable energy source at each adjacent moment according to the output power of each renewable energy source at different moments;

[0034] A determination index determination module, used to determine whether there is a determination index of renewable energy with an opposite change trend at each adjacent moment according to the power change amount of each renewable energy at each adjacent moment;

[0035] The complementary index determination module is used to calculate the complementary indexes of multiple renewable energy sources according to the determination index of whether there is a renewable energy source with opposite change trends at each adjacent moment.

[0036] In a third aspect, the present application provides a renewable energy plant site selection method, the renewable energy plant site selection method comprising the following steps:

[0037] According to the types of renewable energy included in the renewable energy plant to be built, the above-mentioned renewable energy complementarity determination method is used to calculate the complementarity index of multiple renewable energy included in the renewable energy plant to be built at different candidate locations;

[0038] The candidate location with the smallest complementarity index is selected as the location of the renewable energy plant to be built.

[0039] In a fourth aspect, the present application provides a computer device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-mentioned method for determining the complementarity of renewable energy, or to implement the above-mentioned method for selecting a site for a renewable energy plant.

[0040] In a fifth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned method for determining the complementarity of renewable energy or the above-mentioned method for selecting a site for a renewable energy plant.

[0041] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0042] The present application provides a method, device, equipment and medium for determining the complementarity of renewable energy sources. The present application abandons the calculation method based on correlation coefficients, sets a determination index for whether there are renewable energy sources with opposite change trends, and determines the determination index for whether there are renewable energy sources with opposite change trends at each adjacent moment based on the power change of each renewable energy source at each adjacent moment. Further, complementarity is determined based on the determination index, thereby realizing the evaluation of the complementarity of multiple renewable energy sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 This is an application environment diagram of a method for determining renewable energy complementarity in one embodiment of the present application;

[0045] Figure 2 A schematic flow chart of a method for determining renewable energy complementarity provided in one embodiment of the present application;

[0046] Figure 3 for Figure 1 A detailed flow chart of the steps of calculating the complementarity index of multiple renewable energy sources according to the determination index of whether there are renewable energy sources with opposite change trends at each adjacent moment;

[0047] Figure 4 A schematic diagram of functional modules of a device for determining complementarity of renewable energy provided in one embodiment of the present application;

[0048] Figure 5 for Figure 4 Schematic diagram of the detailed functional modules of the complementary index determination module;

[0049] Figure 6 A schematic diagram of the structure of a computer device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0052] The method for determining the complementarity of renewable energy provided in the embodiment of the present application can be applied to Figure 1In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be set up separately, integrated on the server 104, or placed on the cloud or other servers. The terminal 102 can send the output power of each renewable energy at different times to the server 104, and the server 104 receives the output power of each renewable energy at different times; the server 104 calculates the power change of each renewable energy at each adjacent time according to the output power of each renewable energy at different times; according to the power change of each renewable energy at each adjacent time, it determines whether there is a renewable energy with an opposite change trend at each adjacent time. The determination index of multiple renewable energy sources is calculated based on the determination index of whether there is a renewable energy with an opposite change trend at each adjacent time. The server 104 can feedback the obtained complementary index to the terminal 102. In addition, in some embodiments, the method for determining the complementarity of renewable energy can also be implemented separately by the server 104 or the terminal 102, such as the terminal 102 can directly process the output power of each renewable energy at different times, or the server 104 can obtain the output power of each renewable energy at different times from the data storage system, and process the output power of each renewable energy at different times.

[0053] The terminal 102 may be, but is not limited to, various desktop computers, laptop computers, smart phones, tablet computers, IoT devices, and portable wearable devices. The IoT devices may be smart speakers, smart TVs, smart air conditioners, smart vehicle-mounted devices, etc. The portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. The server 104 may be implemented as an independent server or a server cluster consisting of multiple servers, or may be a cloud server.

[0054] In an exemplary embodiment, Figure 2 As shown, a method for determining the complementarity of renewable energy is provided. The method is executed by a computer device, and can be executed by a computer device such as a terminal or a server alone, or by a terminal and a server together. In the embodiment of the present application, the method is applied to Figure 1 The server 104 in the example is used as an example to illustrate the method, which includes the following steps 201 to 204. Among them:

[0055] Step 201: output power of each renewable energy source at different times.

[0056] Step 202: Calculate the power variation of each renewable energy source at each adjacent moment according to the output power of each renewable energy source at different moments.

[0057] Step 203: determining, based on the power variation of each renewable energy source at each adjacent moment, whether there is a renewable energy source with an opposite variation trend at each adjacent moment.

[0058] Step 204 , according to the determination index of whether there is a renewable energy source with an opposite change trend at each adjacent moment, the complementarity index of the multiple renewable energy sources is calculated.

[0059] By implementing the above steps 201 to 204 , the complementarity of multiple renewable energy sources can be evaluated.

[0060] In this implementation, the method for calculating the power change of each renewable energy source at each adjacent moment is as follows:

[0061] The power difference of each renewable energy source at each adjacent moment is calculated to obtain the change of each renewable energy source at each moment:

[0062] Δp i (t') = p i (t)-p i (t-1);

[0063] Where: Δp i (t') is the power change of the i-th renewable energy at the adjacent time t'; i = 1, 2, ..., m, m is the number of renewable energy types; p i (t) is the output power of the i-th renewable energy at time t, p i (t-1) is the output power of the i-th renewable energy at time t-1; t=2,3,……,N, N is the total number of time.

[0064] Determine whether the output power of each energy source is complementary at each adjacent moment:

[0065]

[0066] Where: a(t') is the determination index of whether there is a renewable energy with opposite change trend at the adjacent time t'. If the index is 1, it means that there is a renewable energy with opposite change trend at the adjacent time t', and complementation has occurred. If it is 0, it means that no complementation has occurred; t'=1,2,3,……,N-1; Δp j (t') is the power change of the jth renewable energy at the adjacent time t', Δp k (t') is the power change of the kth renewable energy at the adjacent time t', m is the number of renewable energy types, Indicates existence.

[0067] In another exemplary embodiment of the present application, in order to realize the determination index of whether there is a renewable energy source with an opposite change trend at each adjacent moment, the complementarity index of multiple renewable energy sources is calculated, such as Figure 3 As shown, the above step 204 is replaced by the following steps 301 to 302:

[0068] Step 301, according to the determination index of whether there are renewable energy sources with opposite change trends at each adjacent moment, the total number of events in which the output power of renewable energy sources is complementary and the total number of events in which the output power of renewable energy sources is not complementary are calculated.

[0069] Step 302 , calculating complementarity indexes of multiple renewable energy sources according to the total number of events in which the output powers of renewable energy sources are complementary and the total number of events in which the output powers of renewable energy sources are not complementary.

[0070] In this example, the formula for calculating the total number of events where renewable energy output power complements is:

[0071]

[0072] Among them, a(t') is the determination index of whether there is a renewable energy with opposite change trend in the adjacent time of t', r is the total number of events in which the output power of renewable energy is complementary, and N is the total number of time.

[0073] The formula for calculating the total number of events where renewable energy output power is not complemented is:

[0074] u=Nr-1;

[0075] Where u is the total number of events where the renewable energy output power is not complemented.

[0076] The formula for calculating the complementarity index of multiple renewable energy sources is:

[0077]

[0078] Among them, c is the complementarity index of multiple renewable energy sources, r is the total number of events in which the output power of renewable energy sources is complementary, N is the total number of moments, and u is the total number of events in which the output power of renewable energy sources is not complementary.

[0079] The embodiment of the present application further provides an application of the above-mentioned method for determining the complementarity of renewable energy, in which the site selection of a new energy plant can be performed based on the above-mentioned determination method. Specifically, the embodiment provides a method for selecting the site of a renewable energy plant, including the following steps:

[0080] According to the types of renewable energy included in the renewable energy plant to be built, the above-mentioned renewable energy complementarity determination method is used to calculate the complementarity index of the various renewable energy included in the renewable energy plant to be built at different candidate locations. In this step, the output power at different times can be obtained using a virtual model. For example, a neural network model of the output power of different renewable energy sources under different environmental conditions is constructed and trained based on the data of existing plants, and the output power is calculated based on the existing historical environmental data and / or predicted environmental data of the candidate location.

[0081] The candidate location with the smallest complementarity index is selected as the location of the renewable energy plant to be built.

[0082] In order to illustrate the technical effects of the above embodiments, this application also provides the following examples:

[0083] Taking the complementarity of wind energy, solar energy and wave energy as an example, five locations were selected to evaluate the complementarity of the above three renewable energy sources.

[0084] First, the real-time output power of the three renewable energy sources is obtained, and the power change and judgment index of each renewable energy source at adjacent moments are calculated according to steps 201, 202, and 203, and the number of complementary events is counted. In the hourly time scale, N = 8760. The energy complementarity of the five locations is shown in Table 1.

[0085] Table 1 Total number of events where the output of the three renewable energy sources was complementary and the total number of events where no complementary occurred at 5 locations

[0086] Position 1 Position 2 Location 3 Position 4 Location 5 r 3552 4624 4269 4271 3623 u 5207 4135 4490 4488 5136

[0087] The complementarity indexes of the three renewable energy sources are calculated and the results are shown in Table 2.

[0088] Table 2 Complementarity index values ​​of three renewable energy sources at 5 locations

[0089] Position 1 Position 2 Location 3 Position 4 Location 5 c 0.1889 -0.0558 0.0252 0.0248 0.1727

[0090] The complementarity index values ​​of the five positions are 0.1889, -0.0558, 0.0252, 0.0248, and 0.1727, respectively. Obviously, 0.1889>0.1727>0.0252>0.0248>-0.0558. For these three renewable energy sources, the complementarity of the five positions from weak to strong is: position 1, position 5, position 3, position 4, position 2. At this time, position 2 can be selected as the location of the renewable energy plant.

[0091] The present application also provides another application scenario of the above-mentioned method for determining the complementarity of renewable energy. Specifically: The method for determining the complementarity of renewable energy provided in this embodiment can be applied in renewable energy distribution control. The method for determining the complementarity of renewable energy provided in this embodiment belongs to the indicator calculation link of distributed control. Specifically, based on the above-mentioned determination method, a complementarity index is obtained, and based on the complementarity index, the working status of different renewable energy sources in the same time period can be controlled to make the total output smoother.

[0092] Based on the same inventive concept, the embodiment of the present application also provides a device for determining renewable energy complementarity for implementing the above-mentioned method for determining renewable energy complementarity. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in the embodiments of one or more devices for determining renewable energy complementarity provided below can refer to the limitations of the method for determining renewable energy complementarity above, and will not be repeated here.

[0093] In an exemplary embodiment, Figure 4 As shown, a device for determining the complementarity of renewable energy is provided, comprising:

[0094] The output power acquisition module 401 is used to acquire the output power of each renewable energy source at different times.

[0095] The power variation calculation module 402 is used to calculate the power variation of each renewable energy source at each adjacent moment according to the output power of each renewable energy source at different moments.

[0096] The determination index determination module 403 is used to determine, according to the power change amount of each renewable energy source at each adjacent moment, whether there is a determination index of a renewable energy source with an opposite change trend at each adjacent moment.

[0097] The complementarity index determination module 404 is used to calculate the complementarity indexes of the multiple renewable energy sources according to the determination index of whether there is a renewable energy source with opposite change trends at each adjacent moment.

[0098] In this implementation, the formula for calculating the power change of each renewable energy source at each adjacent moment is:

[0099] Δp i (t') = p i (t)-p i (t-1);

[0100] Among them, Δp i (t') is the power change of the i-th renewable energy at the adjacent time t', p i(t) is the output power of the i-th renewable energy at time t, p i (t-1) is the output power of the i-th renewable energy at time t-1.

[0101] The formula for determining whether there are renewable energy sources with opposite change trends at each adjacent moment is:

[0102]

[0103] Wherein, a(t') is the determination index of whether there is a renewable energy with opposite change trend in the adjacent time of t'. When a(t') = 1, it indicates that there is a renewable energy with opposite change trend in the adjacent time of t'. When a(t') = 0, it indicates that there is no renewable energy with opposite change trend in the adjacent time of t'. Δp j (t') is the power change of the jth renewable energy at the adjacent time t', Δp k (t') is the power change of the kth renewable energy at the adjacent time t', m is the number of renewable energy types, Indicates existence.

[0104] As an optional implementation, Figure 5 As shown, the complementary index determination module 404 may include an event statistics unit 501 and a complementary index calculation unit 502 .

[0105] The event statistics unit 501 is used to calculate the total number of events in which the output power of renewable energy sources is complementary and the total number of events in which the output power of renewable energy sources is not complementary according to the determination index of whether there is a renewable energy source with an opposite change trend at each adjacent moment.

[0106] The complementarity index calculation unit 502 is used to calculate the complementarity index of multiple renewable energy sources according to the total number of events in which the output power of renewable energy sources is complementary and the total number of events in which the output power of renewable energy sources is not complementary.

[0107] Wherein, in implementing this implementation mode, the formula for calculating the total number of events in which the output power of renewable energy is complementary is:

[0108]

[0109] Among them, a(t') is the determination index of whether there is a renewable energy with opposite change trend in the adjacent time of t', r is the total number of events in which the output power of renewable energy is complementary, and N is the total number of time;

[0110] The formula for calculating the total number of events where renewable energy output power is not complemented is:

[0111] u=Nr-1;

[0112] Where u is the total number of events where the renewable energy output power is not complemented.

[0113] The formula for calculating the complementarity index of multiple renewable energy sources is:

[0114]

[0115] Among them, c is the complementarity index of multiple renewable energy sources, r is the total number of events in which the output power of renewable energy sources is complementary, N is the total number of moments, and u is the total number of events in which the output power of renewable energy sources is not complementary.

[0116] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 6 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data for determining complementarity. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for determining the complementarity of renewable energy is implemented.

[0117] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0118] In an exemplary embodiment, a computer device is also provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the steps in the above-mentioned method for determining the complementarity of renewable energy are implemented.

[0119] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, which, when executed by a processor, implements the steps in the above-mentioned method for determining complementarity of renewable energy.

[0120] In an exemplary embodiment, a computer program product is provided, including a computer program, which implements the steps in the above-mentioned renewable energy complementarity determination method embodiment when executed by a processor.

[0121] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0122] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, etc., but is not limited thereto.

[0123] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0124] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for determining complementarity of renewable energy, characterized in that: The method for determining the complementarity of renewable energy sources comprises: Obtain the output power of each renewable energy source at different times; According to the output power of each renewable energy source at different times, the power change of each renewable energy source at each adjacent time is calculated; According to the power change of each renewable energy source at each adjacent moment, a determination index is determined as to whether there is a renewable energy source with an opposite change trend at each adjacent moment; The complementarity index of multiple renewable energy sources is calculated based on the determination index of whether there are renewable energy sources with opposite change trends at each adjacent moment.

2. The method for determining the complementarity of renewable energy sources according to claim 1, characterized in that: The formula for calculating the power change of each renewable energy source at each adjacent moment is: Δp i (t')=p i (t)-p i (t-1); Among them, Δp i (t') is the power change of the i-th renewable energy at the adjacent time t', p i (t) is the output power of the i-th renewable energy at time t, p i (t-1) is the output power of the i-th renewable energy at time t-1.

3. The method for determining the complementarity of renewable energy sources according to claim 1, characterized in that: According to the power change of each renewable energy source at each adjacent moment, the formula for determining whether there is a renewable energy source with an opposite change trend at each adjacent moment is: Wherein, a(t') is the determination index of whether there is a renewable energy with opposite change trend in the adjacent time of t'. When a(t') = 1, it indicates that there is a renewable energy with opposite change trend in the adjacent time of t'. When a(t') = 0, it indicates that there is no renewable energy with opposite change trend in the adjacent time of t'. Δp j (t') is the power change of the jth renewable energy at the adjacent time t', Δp k (t') is the power change of the kth renewable energy at the adjacent time t', m is the number of renewable energy types, Indicates existence.

4. The method for determining the complementarity of renewable energy sources according to claim 1, characterized in that: Based on the determination index of whether there are renewable energy sources with opposite change trends at each adjacent moment, the complementarity index of multiple renewable energy sources is calculated, including: According to the determination index of whether there are renewable energy sources with opposite change trends at each adjacent moment, the total number of events in which the output power of renewable energy sources is complementary and the total number of events in which the output power of renewable energy sources is not complementary are calculated; The complementarity index of multiple renewable energy sources is calculated based on the total number of events in which the output power of renewable energy sources is complementary and the total number of events in which the output power of renewable energy sources is not complementary.

5. The method for determining the complementarity of renewable energy sources according to claim 4, characterized in that: According to the determination index of whether there are renewable energy sources with opposite change trends at each adjacent moment, the total number of events in which the output power of renewable energy sources is complementary and the total number of events in which the output power of renewable energy sources is not complementary are calculated, including: According to the determination index of whether there is a renewable energy with opposite change trend at each adjacent moment, the total number of events in which the output power of renewable energy is complementary is calculated using the following formula; Among them, a(t') is the determination index of whether there is a renewable energy with opposite change trend in the adjacent time of t', r is the total number of events in which the output power of renewable energy is complementary, and N is the total number of time; According to the total number of events in which the output power of renewable energy sources is complementary, the total number of events in which the output power of renewable energy sources is not complementary is calculated using the following formula; u=Nr-1; Where u is the total number of events where the renewable energy output power is not complemented.

6. The method for determining renewable energy complementarity according to claim 4, characterized in that: The formula for calculating the complementarity index of multiple renewable energy sources is: Among them, c is the complementarity index of multiple renewable energy sources, r is the total number of events in which the output power of renewable energy sources is complementary, N is the total number of moments, and u is the total number of events in which the output power of renewable energy sources is not complementary.

7. A device for determining complementarity of renewable energy, characterized in that: The device for determining the complementarity of renewable energy sources applies the method for determining the complementarity of renewable energy sources according to any one of claims 1 to 6, and the device for determining the complementarity of renewable energy sources comprises: An output power acquisition module is used to acquire the output power of each renewable energy source at different times; A power variation calculation module is used to calculate the power variation of each renewable energy source at each adjacent moment according to the output power of each renewable energy source at different moments; A determination index determination module, used to determine whether there is a determination index of renewable energy with an opposite change trend at each adjacent moment according to the power change amount of each renewable energy at each adjacent moment; The complementary index determination module is used to calculate the complementary indexes of multiple renewable energy sources according to the determination index of whether there is a renewable energy source with opposite change trends at each adjacent moment.

8. A method for site selection of a renewable energy plant, characterized in that: The renewable energy plant site selection method comprises the following steps: According to the types of renewable energy included in the renewable energy plant to be built, the method for determining the complementarity of renewable energy as described in any one of claims 1 to 6 is used to calculate the complementarity indexes of the multiple renewable energy included in the renewable energy plant to be built at different candidate locations; The candidate location with the smallest complementarity index is selected as the location of the renewable energy plant to be built.

9. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for determining the complementarity of renewable energy sources as described in any one of claims 1 to 6, or to implement the method for selecting a site for a renewable energy plant as described in claim 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for determining the complementarity of renewable energy sources described in any one of claims 1 to 6 is implemented, or the method for selecting a site for a renewable energy plant described in claim 8 is implemented.

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