New energy power generation full-link evaluation index system construction method and device

Abstract

The invention discloses a new energy power generation full-link evaluation index system construction method, and relates to the technical field of new energy, and the method comprises the steps: constructing a new energy power generation full-link evaluation index system, then constructing a calculation method for each evaluation index value, and finally evaluating the power generation full link of a to-be-evaluated new energy station according to the index system. Therefore, comprehensive mastering and understanding can be carried out on the aspects of power generation, wind / light abandoning and the like of the new energy station. The invention further discloses a new energy power generation full-link evaluation index system construction device, compared with an existing mainstream method, the new energy power generation full-link evaluation index system construction method can further improve the reliability and comprehensiveness of new energy power generation evaluation, and has important value for improving new energy consumption.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a method and device for constructing an evaluation index system for all aspects of new energy power generation. Background Art

[0002] In recent years, large-scale wind power, photovoltaic power and other new energy sources with zero carbon emissions and zero marginal costs have been connected to the grid at an accelerated pace, and have gradually developed into the mainstream power source of the power system. However, due to the non-dispatch capability, weak grid-connected performance, low inertia and low short-circuit capacity of wind and solar power units and other new energy sources, as well as the constraints of grid security and stability, power market mechanisms and other factors, the capacity to absorb new energy generation still faces severe challenges.

[0003] In order to comprehensively improve the capacity for absorbing new energy, the evaluation of new energy power generation is particularly important. However, the current mainstream method for evaluating the capacity for absorbing new energy is mainly based on typical days and operation simulation methods, considering factors such as power balance, peak load and standby demand, and grid obstruction to determine the level of new energy acceptance in various regions of the power grid. There is a lack of systematic research on the evaluation of the entire process of operation and absorption of new energy power generation, and the evaluation index system is still insufficient in terms of systematicity and integrity; the existing technology cannot evaluate the power generation of new energy stations in all aspects. In view of this, how to study the evaluation index system for the entire process of new energy power generation to improve the level of new energy absorption is an urgent problem to be solved. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a method and device for constructing an evaluation index system for all aspects of new energy power generation. The present invention can comprehensively grasp and understand the power generation, wind / light abandonment and other aspects of new energy sites, making the evaluation results more reliable and comprehensive.

[0005] The present invention adopts the following technical solutions to solve the above technical problems:

[0006] A method for constructing an evaluation index system for all aspects of new energy power generation proposed in the present invention includes:

[0007] Aiming at the consumption of new energy, an evaluation index system for all aspects of new energy power generation is constructed, and the evaluation index system includes multiple evaluation indicators;

[0008] Under the evaluation index system of all aspects of new energy power generation, the calculation method of each evaluation index is constructed;

[0009] Based on the calculation method of each evaluation index of the new energy object to be evaluated under the evaluation index system, the evaluation results of all aspects of the new energy site are determined.

[0010] As a further optimization scheme for the method of constructing the evaluation index system for all aspects of new energy power generation described in the present invention,

[0011] The evaluation index system includes primary indicators, which include secondary indicators, wherein the primary indicators include spatial distribution indicators, power flow indicators and indicator category indicators;

[0012] The secondary indicators included in the spatial distribution indicators include the available power generation index of new energy units and the available power generation index of new energy under the spatial level coupling of stations and new energy units;

[0013] The secondary indicators included in the power flow indicators include the actual power generation index and power generation index of new energy under the power flow constraints;

[0014] The secondary indicators included in the indicator category indicators include new energy installed capacity penetration rate indicator, electricity penetration rate indicator, electricity penetration rate indicator, utilization rate indicator and power abandonment rate indicator.

[0015] As a further optimization scheme of the method for constructing the evaluation index system of all links of new energy power generation described in the present invention, the method for constructing the calculation method of each evaluation index includes calculating the available power generation index and the available power generation index of new energy under the spatial hierarchical coupling of new energy single machine and station, and the available power generation index and the available power generation index of new energy are calculated by the total power outage of the new energy station and the power loss;

[0016] The following method is used to calculate the total shutdown power and power loss of new energy stations under the coupling of new energy single machine and station space level;

[0017]

[0018] in, is the total power of planned shutdown in the new energy station j, is the total power of failure outage, is the total outage power caused by the impact on the site under the influence of spatial distribution; are the power loss caused by planned outage, fault outage, and outage due to spatial distribution in the new energy station j; M exa 、M sto 、M acc are the number of new energy units that were shut down due to planned shutdown, fault shutdown, and shutdown due to spatial distribution in new energy station j; They are the total outage power caused by planned outage, fault outage, and site impact under the influence of spatial distribution in the new energy station j at time t; is the mth single machine in the new energy station j, T is the total operation time of the new energy station, and Δt is the time interval between time t and t+1;

[0019]

[0020] Among them, P act,j , P the,j are the available power generation and theoretical power generation of the new energy station j respectively; E act,j 、E the,j are the available power generation and theoretical power generation of the new energy station j, M is the number of units in the new energy station, is the theoretical power generation of the new energy station j at time t;

[0021] P act,j 、E act,j That is, the available power generation index of new energy and the available power generation of new energy.

[0022] As a further optimization scheme for the method of constructing an evaluation index system for all aspects of renewable energy power generation described in the present invention, the on-site impact under the influence of spatial distribution includes equipment failures or planned maintenance of the collection lines, box transformers, busbars, and main transformers belonging to the renewable energy under different spatial distributions within the station.

[0023] As a further optimization scheme for the construction method of the evaluation index system for all aspects of new energy power generation described in the present invention, the method for constructing the calculation method of each evaluation index includes calculating the actual power generation index and power generation index of the new energy under the power flow constraint, and the actual power generation index and power generation index of the new energy under the power flow constraint are calculated in the following manner; specifically as follows:

[0024] P fin,j =min(P act,j ,P i,max )

[0025]

[0026] Among them, P fin,j is the actual power generation index of the new energy station j, P i,max is the maximum power of the grid node i where the new energy station j is located under the power flow constraint; E fin,j is the actual power generation indicator of the new energy station j.

[0027] As a further optimization scheme for the construction method of the evaluation index system for all aspects of new energy power generation described in the present invention, the method for calculating each evaluation index includes calculating the new energy installed capacity penetration index, the power penetration index, the electricity penetration index, the utilization index and the power abandonment rate index, and the new energy installed capacity penetration index, the power penetration index, the electricity penetration index, the utilization index and the power abandonment rate index are calculated respectively in the following manner, wherein:

[0028] New energy installed capacity penetration index η cap,j =C cap,j / L max , where Ccap,j is the installed capacity of new energy station j, L max is the maximum load power of the power system;

[0029] Electricity penetration index η P,j =C P,j / L max , where C P,j is the confidence capacity of the new energy station j;

[0030] Power penetration index in, is the maximum load power of the power system;

[0031] Utilization index η E,j =E fin,j / E act,j ;

[0032] Power abandonment rate index η E,j =(E the,j -E fin,j ) / E the,j .

[0033] In the second aspect, a device for constructing an evaluation index system for all aspects of new energy power generation includes:

[0034] The collection module collects all data in the whole process of evaluating new energy power generation, including the installed capacity, power generation and fault shutdown data of new energy stations;

[0035] The indicator module is used to construct an evaluation indicator system for the entire evaluation process of new energy power generation and calculate the values ​​of each evaluation indicator of the new energy station;

[0036] The evaluation module presents the evaluation results of the entire process of new energy station power generation in a visual manner based on the calculated values ​​of each evaluation indicator in the evaluation indicator system of the entire process of new energy power generation.

[0037] In a third aspect, an embodiment of the present invention further provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein when the processor executes the computer program, the steps of the method for constructing an evaluation index system for all aspects of new energy power generation are implemented as described in the first aspect above or any corresponding embodiment thereof.

[0038] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps of a method for constructing an evaluation index system for all aspects of new energy power generation as described in the first aspect above or any corresponding embodiment thereof.

[0039] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0040] (1) The present invention first constructs an evaluation index system for all aspects of new energy power generation, then constructs a calculation method for each evaluation index value, and finally evaluates all aspects of power generation of the new energy station to be evaluated based on the index system, thereby being able to comprehensively understand the power generation, wind / light abandonment, etc. of the new energy station, making the evaluation result more reliable and comprehensive;

[0041] (2) The final evaluation results of this application are presented in the form of evaluation values, which are more accurate and intuitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the steps of the whole process evaluation method of renewable energy power generation in the present invention;

[0043] Figure 2 It is a schematic diagram of the evaluation index system for the whole process of renewable energy power generation oriented to consumption in the present invention;

[0044] Figure 3 It is a schematic diagram of the structure of the whole process evaluation device of renewable energy power generation in the present invention;

[0045] Figure 4 It is a schematic diagram of the computer equipment structure involved in the whole process evaluation of renewable energy power generation in the present invention. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0048] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0049] Reference Figure 1 to Figure 4 , is an embodiment of the present invention, which provides a method for constructing an evaluation index system for the whole process of new energy power generation oriented to consumption, including:

[0050] Aiming at the consumption of new energy, an evaluation index system for all aspects of new energy power generation is constructed, which includes multiple evaluation indicators:

[0051] The evaluation index system includes primary indicators, which include secondary indicators, wherein the primary indicators include spatial distribution indicators, power flow indicators and indicator category indicators;

[0052] The secondary indicators included in the spatial distribution indicators include the available power generation index of new energy units and the available power generation index of new energy under the spatial level coupling of stations and new energy units;

[0053] The secondary indicators included in the power flow indicators include the actual power generation index and power generation index of new energy under the power flow constraints;

[0054] The secondary indicators included in the indicator category indicators include new energy installed capacity penetration rate indicator, electricity penetration rate indicator, electricity penetration rate indicator, utilization rate indicator and power abandonment rate indicator.

[0055] Under the proposed evaluation index system for all aspects of new energy power generation, the calculation method for each evaluation index value is constructed:

[0056] The available power index and available power generation index of new energy are calculated by the total shutdown power and power loss of new energy stations;

[0057] The following method is used to calculate the total shutdown power and power loss of new energy stations under the coupling of new energy single machine and station space level;

[0058]

[0059] in, is the total power of planned shutdown in the new energy station j, is the total power of failure outage, It is the total outage power caused by the impact on the site due to spatial distribution (for example, failure or planned maintenance of the collection line, box transformer, busbar, main transformer and other equipment belonging to the new energy under different spatial distribution in the site); are the power loss caused by planned outage, fault outage, and outage due to spatial distribution in the new energy station j; M exa 、M sto 、M acc are the number of new energy units that were shut down due to planned shutdown, fault shutdown, and shutdown due to spatial distribution in new energy station j; They are the total outage power caused by planned outage, fault outage, and site impact under the influence of spatial distribution in the new energy station j at time t; is the mth single machine in the new energy station j, T is the total operation time of the new energy station, and Δt is the time interval between time t and t+1;

[0060]

[0061] Among them, P act,j , P the,j are the available power generation and theoretical power generation of the new energy station j respectively; E act,j 、E the,j are the available power generation and theoretical power generation of the new energy station j, M is the number of units in the new energy station, is the theoretical power generation of the new energy station j at time t;

[0062] P act,j 、E act,j That is, the available power generation index of new energy and the available power generation of new energy

[0063] The following method is used to calculate the actual power generation index and power generation index of new energy under the power flow constraint:

[0064] P fin,j =min(P act,j ,P i,max )

[0065]

[0066] Among them, P fin,j is the actual power generation index of the new energy station j, P i,max is the maximum power of the grid node i where the new energy station j is located under the power flow constraint; E fin,j is the actual power generation indicator of the new energy station j.

[0067] The following methods are used to calculate the new energy installed capacity penetration rate index, power penetration rate index, electricity penetration rate index, utilization rate index and power abandonment rate index respectively, among which,

[0068] New energy installed capacity penetration index η cap,j =C cap,j / L max , where C cap,j is the installed capacity of new energy station j, L max is the maximum load power of the power system;

[0069] Electricity penetration index η P,j =C P,j / L max , where C P,j is the confidence capacity of the new energy station j;

[0070] Power penetration index in, is the maximum load power of the power system;

[0071] Utilization index η E,j =E fin,j / E act,j ;

[0072] Power abandonment rate index η E,j =(E the,j -E fin,j ) / E the,j .

[0073] According to the calculation method of each evaluation index value of the new energy object to be evaluated, the evaluation results of the whole process of the new energy site are determined, and a new energy power generation whole process evaluation device is built, including:

[0074] The collection module collects all data in the whole process of evaluating new energy power generation, including the installed capacity, power generation and fault shutdown data of new energy (photovoltaic, wind power) stations;

[0075] The indicator module is used to construct an evaluation indicator system for the entire evaluation process of new energy power generation and calculate the values ​​of each evaluation indicator of the new energy station;

[0076] The evaluation module presents the evaluation results of the entire process of new energy station power generation in a visual manner based on the calculated values ​​of each evaluation indicator in the evaluation indicator system of the entire process of new energy power generation.

[0077] An embodiment of the present application provides a computer device, including: a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes any step of the above-mentioned method for constructing an evaluation index system for all aspects of new energy power generation.

[0078] The computer device may be a terminal, and the computer device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. 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 and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a key, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.

[0079] This embodiment also provides a storage medium on which a computer program is stored. When the program is executed by a processor, the method for constructing an evaluation index system for all aspects of new energy power generation proposed in the above embodiment is implemented.

[0080] In summary, this scheme constructs an evaluation index system for all aspects of new energy power generation, then constructs a calculation method for each evaluation index value, and finally evaluates all aspects of power generation of new energy sites to be evaluated based on the index system, so as to have a comprehensive understanding of power generation, wind / light abandonment, etc. of new energy sites. Compared with the existing mainstream methods, the method proposed in this invention can further improve the reliability and comprehensiveness of new energy power generation evaluation, which is of great value for improving new energy consumption.

[0081] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may 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.) containing computer-usable program codes. The schemes in the embodiments of the present invention may be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0082] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes 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 processor of 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 processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0083] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0084] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0085] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0086] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for constructing an evaluation index system for all aspects of new energy power generation, characterized in that: include: Aiming at the consumption of new energy, an evaluation index system for all aspects of new energy power generation is constructed, and the evaluation index system includes multiple evaluation indicators; Under the evaluation index system of all aspects of new energy power generation, the calculation method of each evaluation index is constructed; Based on the calculation method of each evaluation index of the new energy object to be evaluated under the evaluation index system, the evaluation results of all aspects of the new energy site are determined.

2. The method for constructing an evaluation index system for all aspects of new energy power generation according to claim 1, characterized in that: The evaluation index system includes primary indicators, which include secondary indicators, wherein the primary indicators include spatial distribution indicators, power flow indicators and indicator category indicators; The secondary indicators included in the spatial distribution indicators include the available power generation index of new energy units and the available power generation index of new energy under the spatial level coupling of stations and new energy units; The secondary indicators included in the power flow indicators include the actual power generation index and power generation index of new energy under the power flow constraints; The secondary indicators included in the indicator category indicators include new energy installed capacity penetration rate indicator, electricity penetration rate indicator, electricity penetration rate indicator, utilization rate indicator and power abandonment rate indicator.

3. The method for constructing an evaluation index system for all aspects of new energy power generation according to claim 1, characterized in that: The method for calculating each evaluation index includes calculating the available power generation index and the available power generation index of new energy under the spatial hierarchical coupling of new energy single machine and station. The available power generation index and the available power generation index of new energy are calculated by the total power outage of the new energy station and the power loss. The following method is used to calculate the total shutdown power and power loss of new energy stations under the coupling of new energy single machine and station space level; in, is the total power of planned shutdown in the new energy station j, is the total power of failure outage, is the total outage power caused by the impact on the site under the influence of spatial distribution; are the power loss caused by planned outage, fault outage, and outage due to spatial distribution in the new energy station j; M exa 、M sto 、M acc are the number of new energy units that were shut down due to planned shutdown, fault shutdown, and shutdown due to spatial distribution in new energy station j; They are the total outage power caused by planned outage, fault outage, and site impact under the influence of spatial distribution in the new energy station j at time t; is the mth single machine in the new energy station j, T is the total operation time of the new energy station, and Δt is the time interval between time t and t+1; Among them, P act,j , P the,j are the available power generation and theoretical power generation of the new energy station j respectively; E act,j 、E the,j are the available power generation and theoretical power generation of the new energy station j, M is the number of units in the new energy station, is the theoretical power generation of the new energy station j at time t; P act,j 、E act,j That is, the available power generation index of new energy and the available power generation index of new energy.

4. The method for constructing an evaluation index system for all aspects of new energy power generation according to claim 3, characterized in that: The impact on the site due to spatial distribution includes equipment failures or planned maintenance of the collection lines, box transformers, busbars, and main transformers belonging to the new energy sources with different spatial distributions within the site.

5. The method for constructing an evaluation index system for all aspects of new energy power generation according to claim 3, characterized in that: The method for calculating each evaluation index includes calculating the actual power generation index and power generation index of new energy under the power flow constraint, and the actual power generation index and power generation index of new energy under the power flow constraint are calculated in the following way; specifically as follows: P fin,j =min(P act,j ,P i,max ) Among them, P fin,j is the actual power generation index of the new energy station j, P i,max is the maximum power of the grid node i where the new energy station j is located under the power flow constraint; E fin,j is the actual power generation indicator of the new energy station j.

6. The method for constructing an evaluation index system for all aspects of new energy power generation according to claim 5, characterized in that: The method for calculating each evaluation index includes calculating the new energy installed capacity penetration index, the power penetration index, the electricity penetration index, the utilization index and the power abandonment rate index, and the new energy installed capacity penetration index, the power penetration index, the electricity penetration index, the utilization index and the power abandonment rate index are calculated respectively in the following manner, wherein: New energy installed capacity penetration index η cap,j =C cap,j / L max , where C cap,j is the installed capacity of new energy station j, L max is the maximum load power of the power system; Electricity penetration index η P,j =C P,j / L max , where C P,j is the confidence capacity of the new energy station j; Power penetration index η E,j =E fin,j / E Lmax , where E Lmax is the maximum load power of the power system; Utilization index η E,j =E fin,j / E act,j ; Power abandonment rate index η E,j =(E the,j -E fin,j ) / E the,j .

7. A device for constructing an evaluation index system for all aspects of new energy power generation, characterized in that: include: The collection module collects all data in the whole process of evaluating new energy power generation, including the installed capacity, power generation and fault shutdown data of new energy stations; The indicator module is used to construct an evaluation indicator system for the entire evaluation process of new energy power generation and calculate the values ​​of each evaluation indicator of the new energy station; The evaluation module presents the evaluation results of the entire process of new energy station power generation in a visual manner based on the calculated values ​​of each evaluation indicator in the evaluation indicator system of the entire process of new energy power generation.

8. A computer device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor executes the computer program, the steps of the method for constructing an evaluation index system for all aspects of new energy power generation as described in any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for constructing an evaluation index system for all aspects of new energy power generation as described in any one of claims 1 to 6 are implemented.

Images