Power market integrating degree evaluation method and device based on coupling coordination model

Abstract

The invention relates to an electric power market integrating degree evaluation method and device based on a coupling coordination model, and the method comprises the following steps: S1, constructing an electric power market operation integrating degree evaluation index system, obtaining the input data of an electric power market, and calculating each index value according to the integrating degree evaluation index system; s2, the index values are preprocessed, entropy values of all the preprocessed index values are calculated, weights of the index values are calculated, comprehensive evaluation values of the anchoring index set and the operation index set are calculated based on the weights, the coupling degree, the coordination degree, the integrating degree and the obstacle degree are calculated based on the comprehensive evaluation values, and a power market integrating degree total score is obtained; and S3, based on the overall score of the power market integrating degree, determining a power market operation integrating condition. Compared with the prior art, the method has the advantages of improving interpretability and the like.

Description

Technical Field

[0001] The present invention relates to the field of power systems, and in particular, to a method and device for evaluating the compatibility degree of a power market based on a coupling coordination model. Background Art

[0002] Currently, the research on power market evaluation mostly starts from the power market itself, mainly focusing on the optimization at the economic level, and the research emphasis is concentrated on how to improve the market mechanism and build a fully competitive market environment. However, this perspective is limited to the internal power market and lacks the exploration of evaluating the power market from the macro perspective of economic society. Therefore, it is difficult to reflect the relationship between the power market and economic and social development, and it cannot provide target guidance for the construction and operation direction of the power market.

[0003] CN117273437A discloses a method and system for comprehensively evaluating the operation situation of a power market, including the following steps: obtaining the operation data of the power market to be evaluated; comprehensively evaluating the operation situation of the power market to be evaluated based on the obtained basic data and a pre-established risk assessment index system. The present invention comprehensively considers aspects such as market structure, member behavior, market efficiency, and market operation risks, integrates and processes scattered market information by constructing a comprehensive evaluation system, plays the roles of market supervision and management, early warning and evaluation, and analyzes whether the operation state of the power market reaches an ideal level. This patent relies on a large number of data sets as training sets for training to conduct risk assessment. However, currently, the research on power market evaluation mostly starts from the power market itself, mainly focusing on the optimization at the economic level, and the research emphasis is concentrated on how to improve the market mechanism and build a fully competitive market environment. However, this perspective is limited to the internal power market and lacks the exploration of evaluating the power market from the macro perspective of economic society. Therefore, it is difficult to reflect the relationship between the power market and economic and social development, and has poor flexibility and interpretability, and cannot provide target guidance for the construction and operation direction of the power market. Summary of the Invention

[0004] The purpose of the present invention is to provide a method and device for evaluating the compatibility degree of a power market based on a coupling coordination model to improve the flexibility and interpretability of the power market compatibility degree.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A method for evaluating the compatibility degree of a power market based on a coupling coordination model, characterized in that the method includes the following steps:

[0007] S1. Construct an evaluation index system for the operation compatibility degree of the power market, obtain the input data of the power market, and calculate the values of each index according to the compatibility degree evaluation index system;

[0008] S2. Preprocess the index values, calculate the entropy values of the preprocessed index values, calculate the weights of the index values, calculate the comprehensive evaluation values of the anchoring index set and the operation index set based on the weights, calculate the coupling degree, coordination degree, the fitness degree and obstacle degree of each subsystem based on the comprehensive evaluation values, and obtain the overall score of the power market fitness degree based on the fitness degree of each subsystem;

[0009] S3. Determine the operation fitness situation of the power market based on the overall score of the power market fitness degree.

[0010] Further, the index values include an anchoring index set and an operation index set, and the anchoring index set and the operation index set are respectively related to the power market operation anchoring data and the power market operation actual data in the power market input data.

[0011] Further, the comprehensive evaluation values include the comprehensive evaluation value of the anchoring index set and the comprehensive evaluation value of the operation index set.

[0012] Further, the comprehensive evaluation value of the anchoring index set is:

[0013]

[0014] where x 1j is the normalized value of the j-th index in the anchoring index set of a certain fitness dimension of the power market; w 1j is the weight of the j-th index in the anchoring index set of a certain fitness dimension of the power market; U1 is the comprehensive evaluation value of the anchoring index set of a certain fitness dimension of the power market; n is the number of indexes

[0015] Further, the comprehensive evaluation value of the operation index set is:

[0016]

[0017] where x 2j is the normalized value of the j-th index in the operation index set of a certain fitness dimension of the power market, w 2j is the weight of the j-th index in the operation index set of a certain fitness dimension of the power market; U2 is the comprehensive evaluation value of the operation index set of a certain fitness dimension of the power market; n is the number of indexes.

[0018] Further, the coupling degree is:

[0019]

[0020] where C is the coupling degree.

[0021] Further, the coordination degree is:

[0022]

[0023] Among them, a i is the undetermined weight coefficient of the two subsystems, and U i is the comprehensive evaluation value of the two subsystems.

[0024] Furthermore, the preprocessing is the range method.

[0025] On the other hand, the present invention also provides an evaluation device for the compliance degree of the power market based on the coupling coordination model, including a memory, a processor, and a program stored in the memory. When the processor executes the program, the above-mentioned method is implemented.

[0026] On the other hand, the present invention also provides a computer-readable storage medium with a program stored thereon. When the program is executed, the above-mentioned method is implemented.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] From a brand-new perspective of the fit between the operation of the power market and the development of the economy and society, the present invention applies the coupling coordination evaluation method to construct an evaluation model for the fit degree between the operation of the power market and the development of the economy and society, so as to reflect the effect of the power market serving the development of the economy and society, and provide a theoretical basis and technical support for the in-depth governance of the power market. At the same time, the present invention has flexibility, interpretability, and certain pertinence, providing a basic support for improving the operation efficiency of the power market. The present invention can provide a basic support for further sorting out and clarifying the target requirements of the power market reform under the background of the construction of a new power system, and for scientifically analyzing and evaluating the operation effectiveness of the power market and discovering the fundamental problems existing in the market operation, so as to better clarify the direction and tasks of the power market construction and create conditions for optimizing the ideas and measures for the power market construction. Description of the Drawings

[0029] Figure 1 is the flow chart of the present invention;

[0030] Figure 2 is the flow chart for evaluating the compliance degree of the power market development plan. Detailed Embodiments

[0031] The present invention will be described in detail below with reference to the drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and the detailed implementation manner and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0032] Embodiment 1:

[0033] The present invention provides an evaluation method and device for the compliance degree of the power market based on the coupling coordination model. The method includes the following steps:

[0034] S1. Construct an evaluation index system for the compliance of power market operation, obtain the input data of the power market, and calculate the values of each index according to the compliance evaluation index system;

[0035] S2. Preprocess the index values, calculate the entropy values of the preprocessed index values, calculate the weights of the index values, calculate the comprehensive evaluation values of the anchoring index set and the operation index set based on the weights, calculate the coupling degree, coordination degree, compliance degree and obstacle degree of each subsystem based on the comprehensive evaluation values, and obtain the overall score of the power market compliance based on the compliance degree of each subsystem;

[0036] S3. Determine the compliance situation of the power market operation based on the overall score of the power market compliance, and obtain the evaluation result of the power market compliance.

[0037] The specific steps are as follows:

[0038] a01) Construct an evaluation index system for the compliance of power market operation, and execute step a02);

[0039] a02) Input the anchoring data of the power market operation, and execute step a03);

[0040] a03) Input the actual data of the power market operation;

[0041] a04) Use the input data, combined with the characteristics of the power market, establish an evaluation system for the compliance of the power market, calculate the corresponding index values, and execute step b01);

[0042] b01) Use the entropy weight method to determine the weights of the corresponding indexes in the evaluation system for the compliance of the power market

[0043] (1) First, perform index preprocessing, calculate the entropy value e of each index, establish an intelligent recognition algorithm for performance risk, and calculate the abnormal score of the index and the abnormal score of the market entity. Since there are different dimensions with positive and negative attributes in the index system, the extreme difference method is used to standardize the original index.

[0044] For positive indexes, let

[0045]

[0046] For negative indexes, let

[0047]

[0048] For moderate indexes, let

[0049]

[0050] In the formula: o ij is the value of the jth index in the ith time period of the power market, max(o j) is the maximum value of the j-th indicator, and min(o j ) is the minimum value of the j-th indicator, and x0 is the moderate value. Since the extreme difference method of standardization may result in the phenomenon that the indicator values in individual time periods are 0, in order to meet the condition of taking logarithms in the entropy weight method calculation, for the values that are 0 after standardization, 0.0001 is added for translation processing.

[0051] (2) Calculate the entropy value e of each indicator

[0052]

[0053] (3) Then calculate the weight w of each indicator

[0054]

[0055] Execute step b02);

[0056] b02) Calculate the comprehensive evaluation value. The comprehensive evaluation value is the comprehensive value of the contributions of all indicators within a subsystem to the system. It can be obtained by using the comprehensive evaluation model and combining the standardized data and indicator weights. The expression for the comprehensive evaluation values of the anchoring indicator set and the operation indicator set is:

[0057]

[0058] In the formula: x 1j is the normalized value of the j-th indicator in the anchoring indicator set of a certain fit dimension in the power market; x 2j is the normalized value of the j-th indicator in the operation indicator set of a certain fit dimension in the power market; w 1j is the weight of the j-th indicator in the anchoring indicator set of a certain fit dimension in the power market; w 2j is the weight of the j-th indicator in the operation indicator set of a certain fit dimension in the power market; U1 is the comprehensive evaluation value of the anchoring indicator set of a certain fit dimension in the power market; U2 is the comprehensive evaluation value of the operation indicator set of a certain fit dimension in the power market; n is the number of indicators.

[0059] Execute step b03);

[0060] b03) Construct an evaluation method for the power market fit degree based on the coupling coordination model. The coupling degree is a concept of a time section, and the deviation degree of the comprehensive evaluation values of two systems is used to describe the degree of mutual influence between the two systems during this period. The calculation formula C is:

[0061]

[0062] In the formula: C is the coupling degree. The larger the coupling degree C, the greater the degree of influence between the two systems. That is: the closer the C value is to 1, it means that the distributions of U1 and U2 are uniform; the smaller the C value, it means that U1 and U2 deviate greatly.

[0063] The coordination degree T reflects the overall comprehensive coordinated development level, and the calculation formula is:

[0064]

[0065] In the formula: a i is the undetermined weight coefficient of the two subsystems, and U i is the comprehensive evaluation value of the two subsystems.

[0066] The fitness degree A is the synthesis of coupling and coordinated development. It can not only reveal the degree of mutual influence C between the two subsystems, but also reflect the overall coordinated development level T. The expression of A is:

[0067]

[0068] In the formula: The larger A is, the higher the fitness degree of the power market in a certain fitness dimension. The classification standard of the fitness degree is shown in Table 1.

[0069] Table 1 Evaluation criteria for the fitness degree A of the power market

[0070]

[0071] Execute step b04);

[0072] b04) Calculation of the obstacle degree

[0073] The calculation of the obstacle degree is to diagnose the main factors restricting the fitness degree in a certain dimension of the power market and provide a basis for improving the fitness degree level. The calculation formula is:

[0074]

[0075] In the formula: w i is the weight of each index in the total system; 1 - x ij is the index deviation degree, where x ij is the value after the index is standardized; o j is the obstacle degree, which refers to the influence degree of a single index on the total system.

[0076] Execute step b05);

[0077] b05) Calculate the fitness degree scores of each subsystem, and calculate the overall fitness degree score of the power market according to the fitness degree scores of each subsystem;

[0078] Execute step c01);

[0079] c01) According to the overall fitness degree score of the power market, considering the threshold value of the evaluation criteria of the fitness degree A of the power market in Table 1, judge the fitness situation of the power market operation.

[0080] Among them, the evaluation index system for the compatibility of the power market includes the following indicators, as shown in Table 2:

[0081] Table 2 Evaluation Index System for the Compatibility of the Power Market

[0082]

[0083]

[0084]

[0085]

[0086] The beneficial effects of the present invention are as follows:

[0087] (1) From a brand-new perspective of the compatibility between the operation of the power market and the economic and social development, the present invention applies the coupling coordination evaluation method to construct an evaluation model for the compatibility between the operation of the power market and the economic and social development, so as to reflect the effect of the power market serving the economic and social development, and provide a theoretical basis and technical support for the in-depth governance of the power market.

[0088] (2) Compared with the prior art, the present invention has flexibility, interpretability and certain pertinence, and provides basic support for improving the operation efficiency of the power market. The present invention can provide basic support for further sorting out and clarifying the target requirements of the power market reform under the background of the construction of a new power system, for scientifically analyzing and evaluating the operation effectiveness of the power market, and for discovering the fundamental problems existing in the market operation, so as to better clarify the direction and tasks of the power market construction and create conditions for optimizing the ideas and measures for the power market construction. The flow chart of the evaluation of the compatibility of the power market development plan is as Figure 2 shown.

[0089] Example 2:

[0090] The present invention also provides a computer-readable storage medium, which stores a computer program, and the computer program can be used to execute the above Figure 1The provided method. A computer-readable medium includes permanent and non-permanent, removable and non-removable media and can implement information storage by any method or technology. 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 tapes, magnetic tape disk storage, or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible by a computing device. As defined herein, a computer-readable medium does not include transitory computer-readable media, such as modulated data signals and carrier waves.

[0091] Embodiment 3:

[0092] The present invention also provides a device corresponding to Figure 1 . At the hardware level, the device includes a processor, an internal bus, a network interface, memory, and non-volatile memory. Of course, it may also include other hardware required for other services. The processor reads the corresponding computer program from the non-volatile memory into the memory and then runs it to implement the above Figure 1 data acquisition method. Of course, in addition to the software implementation, the present invention does not exclude other implementation methods, such as logic devices or a combination of software and hardware, etc. That is to say, the execution subject of the following processing flow is not limited to each logic unit and can also be hardware or a logic device.

[0093] For an improvement in a technology, it can be clearly distinguished whether it is an improvement in hardware (e.g., an improvement in circuit structures such as diodes, transistors, switches, etc.) or an improvement in software (an improvement in a method process). However, with the development of technology, many improvements in method processes today can be regarded as direct improvements in hardware circuit structures. Almost all designers obtain the corresponding hardware circuit structure by programming the improved method process into the hardware circuit. Therefore, it cannot be said that an improvement in a method process cannot be implemented using a hardware entity module. For example, a programmable logic device (PLD) (e.g., a field programmable gate array (FPGA)) is such an integrated circuit whose logic function is determined by the user programming the device. Designers can program themselves to "integrate" a digital system on a single PLD without having to ask a chip manufacturer to design and fabricate a dedicated integrated circuit chip. Moreover, nowadays, instead of manually fabricating integrated circuit chips, this programming is mostly implemented using "logic compiler" software, which is similar to the software compiler used in program development and writing. The original code before compilation also has to be written in a specific programming language, which is called a hardware description language (HDL), and there is not only one kind of HDL, but many kinds, such as ABEL (Advanced Boolean Expression Language), AHDL (Altera Hardware Description Language), Confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), Lava, Lola, MyHDL, PALASM, RHDL (Ruby Hardware Description Language), etc. The most commonly used ones currently are VHDL (Very-High-Speed Integrated Circuit Hardware Description Language) and Verilog. Those skilled in the art should also be aware that by simply performing a little logical programming on the method process using the above-mentioned several hardware description languages and programming it into an integrated circuit, it is easy to obtain a hardware circuit that implements the logical method process.

[0094] The controller can be implemented in any suitable manner. For example, the controller can take the form of, for example, a microprocessor or a processor and a computer-readable medium storing computer-readable program code (such as software or firmware) executable by the (micro)processor, logic gates, switches, an application specific integrated circuit (ASIC), a programmable logic controller, and an embedded microcontroller. Examples of the controller include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20, and Silicone Labs C8051F320. The memory controller can also be implemented as part of the control logic of the memory. Those skilled in the art also know that, in addition to implementing the controller in the form of pure computer-readable program code, it is entirely possible to implement the same function by logically programming the method steps so that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, and embedded microcontrollers, etc. Therefore, such a controller can be considered a hardware component, and the devices included therein for implementing various functions can also be regarded as the structures within the hardware component. Or even, the devices for implementing various functions can be regarded as either software modules for implementing the method or structures within the hardware component.

[0095] The systems, devices, modules, or units illustrated in the above embodiments can be specifically implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer 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 email device, a game console, a tablet computer, a wearable device, or any combination of these devices.

[0096] For the convenience of description, when describing the above devices, they are described separately as various units according to their functions. Of course, when implementing the present invention, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0097] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention 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.

[0098] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded processors, or other programmable data processing devices to generate a machine, such that the instructions executed by the processors of the computer or other programmable data processing devices generate means for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 or means for implementing the functions specified in multiple blocks.

[0099] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 or means for implementing the functions specified in multiple blocks.

[0100] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 or means for implementing the functions specified in multiple blocks.

[0101] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and a memory.

[0102] The memory may include non-permanent memory in the form of computer-readable media, random access memory (RAM), and / or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). The memory is an example of computer-readable media.

[0103] It should also be noted that the term "comprising", "including", or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, commodity, or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, commodity, or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, commodity, or device including the said element.

[0104] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0105] The present invention can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present invention can also be practiced in a distributed computing environment where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media including storage devices.

[0106] The embodiments of the present invention are described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences 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 refer to the description of the method embodiment.

[0107] The above description is only for the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

[0108] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and changes based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention through logical analysis, reasoning, or limited experiments based on the concept of the present invention on the basis of the prior art shall be within the protection scope determined by the claims.

Claims

1. A method for evaluating the fitness degree of the electricity market based on the coupling coordination model, characterized in that The method comprises the following steps: S1. Construct an evaluation index system for the compliance of power market operation, obtain the input data of the power market, and calculate the values of each index according to the compliance evaluation index system; S2. Preprocess the index values, calculate the entropy values of the preprocessed index values, calculate the weights of the index values, calculate the comprehensive evaluation values of the anchoring index set and the operation index set based on the weights, calculate the coupling degree, coordination degree, compliance degree and obstacle degree of each subsystem based on the comprehensive evaluation values, and obtain the overall score of the power market compliance based on the compliance degree of each subsystem; S3. Determine the compliance situation of the power market operation based on the overall score of the power market compliance.

2. The method for evaluating the compliance degree of the power market based on the coupling coordination model according to claim 1, wherein The index values include an anchoring index set and an operation index set, and the anchoring index set and the operation index set are respectively associated with the power market operation anchoring data and the actual power market operation data in the input data of the power market.

3. The evaluation method for the power market compliance degree based on the coupling coordination model according to claim 2, wherein The comprehensive evaluation values include the comprehensive evaluation value of the anchoring index set and the comprehensive evaluation value of the operation index set.

4. The method for evaluating the compliance degree of the power market based on the coupling coordination model according to claim 3, wherein The comprehensive evaluation value of the anchoring index set is: Among them, x 1j is the normalized value of the j-th indicator in the anchoring indicator set of a certain fit dimension in the power market; w 1j is the weight of the j-th indicator in the anchoring indicator set of a certain fit dimension in the power market; U1 is the comprehensive evaluation value of the anchoring indicator set of a certain fit dimension in the power market; n is the number of indicators.

5. The evaluation method for the power market compliance degree based on the coupling coordination model according to claim 3, wherein The comprehensive evaluation value of the operation index set is: Among them, x 2j is the normalized value of the j-th indicator in the operation indicator set of a certain fit dimension in the power market, and w 2j is the weight of the j-th indicator in the operation indicator set of a certain fit dimension in the power market; U2 is the comprehensive evaluation value of the operation indicator set of a certain fit dimension in the power market; n is the number of indicators.

6. The evaluation method for the power market fit degree based on the coupling coordination model according to claim 2, wherein The coupling degree is: Wherein, C is the coupling degree.

7. The evaluation method for the power market compliance degree based on the coupling coordination model according to claim 2, characterized in that, The coordination degree is: Among them, a i is the undetermined weight coefficient of the two subsystems, and U i is the comprehensive evaluation value of the two subsystems.

8. The method for evaluating the degree of fit of the power market based on the coupling coordination model according to claim 1, wherein The preprocessing is the range method.

9. An evaluation device for the compatibility degree of the power market based on the coupling coordination model, comprising a memory, a processor, and a program stored in the memory, characterized in that, When the processor executes the program, the method as described in any one of claims 1-8 is implemented.

10. A computer-readable storage medium having a program stored thereon, characterized in that, When the program is executed, the method as described in any one of claims 1-8 is implemented.

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