CN113065762B - Rapid solving method, system, equipment and storage medium for new energy power rejection rate of electric power system - Google Patents
Rapid solving method, system, equipment and storage medium for new energy power rejection rate of electric power system Download PDFInfo
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Abstract
The invention provides a quick solving method, a system, equipment and a storage medium for new energy power rejection rate of an electric power system, wherein the quick solving method comprises the following steps: obtaining the peak regulation capacity of the equivalent new energy of the system; correcting the peak regulation capacity and the theoretical output sequence of the new energy of the equivalent new energy according to the solution scheme, and calculating the new energy waste amount and the waste rate of the system of the scheme; and repeating the electricity rejection rate of all schemes and outputting. By adopting the method, the new energy power rejection rate of the system can be rapidly solved under the condition that the calculation error meets the requirement, and the calculation speed is improved.
Description
Technical Field
The invention relates to the field of power system planning, in particular to a method, a system, equipment and a storage medium for quickly solving new energy power rejection rate of a power system.
Background
In the power system planning stage, the new energy power rejection rate of the power system is generally required to be calculated to evaluate whether the new energy planning scheme is reasonable. When the new energy power-off rate of the electric power system is calculated, production simulation software is generally adopted for calculation, but the calculation time is generally in a range of minutes to hours. Multiple scheme comparison is often required in the planning stage, which causes the problem of excessively long calculation time. After the method is adopted, the calculation time is greatly shortened, and the calculation efficiency can be improved.
Disclosure of Invention
The invention aims to provide a method, a system, equipment and a storage medium for quickly solving the new energy power rejection rate of an electric power system. The method can quickly solve the new energy power-off rate of the system under the condition of meeting the calculation error requirement, and has the characteristics of convenience and rapidness in calculation.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a quick solving method of new energy power rejection rate of an electric power system comprises the following steps:
obtaining the peak regulation capacity of the equivalent new energy of the system;
correcting the peak regulation capacity and the theoretical output sequence of the new energy of the equivalent new energy according to the solution scheme, and calculating the new energy waste amount and the waste rate of the system of the scheme;
and repeating the electricity rejection rate of all schemes and outputting.
As a further improvement of the invention, the step of obtaining the peak shaving capacity of the equivalent new energy of the system further comprises the following steps:
load, direct current output, power installation scale, power regulation capacity and new energy output characteristic data in a system to be researched are collected.
As a further improvement of the invention, the specific obtaining method of the peak shaving capacity of the equivalent new energy of the system is as follows:
based on production simulation calculation, obtaining new energy waste quantity E of system 0 ；
New energy theoretical output sequence { C } Ri Where i=1, 2,3, & 8760;
the initial value of the variable to be solved is equal to the maximum theoretical output C of new energy N ＝max(C Ri )；
Updating the variable to be solved by searching downwards according to the step length delta C, namely C N ＝C N -ΔC；
Corresponding system new energy waste E 1 ＝∑ i max(C Ri -C N ，0)；
And comparing whether the new energy waste amount calculated by the two methods is within the error epsilon range, and if so, outputting the equivalent new energy peak regulation capacity of the corresponding system.
As a further improvement of the invention, whether the new energy waste quantity calculated by the two methods is within the error epsilon range is compared, if not, the method jumps to the step delta C to search downwards to update the variable to be solved.
As a further improvement of the invention, the peak shaving capacity of the equivalent new energy of the system is directly modified if the peak shaving capacity is known.
As a further improvement of the invention, the specific steps of correcting the peak shaving capacity of the equivalent new energy and the theoretical output sequence of the new energy according to the band solving scheme are as follows:
new energy theoretical output sequence { C 'of calculation scheme' Ri Where i=1, 2,3, & 8760;
correcting the peak regulating capacity C 'of the equivalent new energy of the system' N ；
The new energy waste E-Sigma of the system of the scheme is calculated i max(C′ Ri -C′ N 0), the rejection ratio is η=e/Σ i C′ Ri 。
A quick solving system for new energy power rejection rate of an electric power system comprises:
the acquisition module is used for acquiring the peak regulation capacity of the equivalent new energy of the system;
the calculation module is used for correcting the peak regulation capacity of the equivalent new energy and the theoretical output sequence of the new energy according to the band solution scheme and calculating the system new energy waste amount and the waste rate of the scheme;
and the output module is used for repeating the power rejection rate of all the schemes and outputting the power rejection rate.
An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of a method for rapidly solving the new energy power rejection rate of the power system when executing the computer program.
A computer readable storage medium storing a computer program which when executed by a processor implements the steps of a method for fast solving a new energy power rejection rate of an electric power system.
Compared with the prior art, the invention has the beneficial effects that:
for the power generation system to be researched, the method introduces the concept of equivalent new energy peak regulation capability and solves the problem through an equivalent electric quantity discarding method. And then, according to the equivalent new energy peak regulation capability of the system, the system power rejection rate can be rapidly solved for different new energy scales of the system to be researched, the peak regulation capability of the system and other schemes. By adopting the method, the new energy power rejection rate of the system can be rapidly solved under the condition that the calculation error meets the requirement, and the calculation speed is improved. For the power generation system to be researched, the method introduces the concept of equivalent new energy peak regulation capability and solves the problem through an equivalent electric quantity discarding method. And then, according to the equivalent new energy peak regulation capability of the system, the system power rejection rate can be rapidly solved for different new energy scales of the system to be researched, the peak regulation capability of the system and other schemes. By adopting the method, the new energy power rejection rate of the system can be rapidly solved under the condition that the calculation error meets the requirement, and the calculation speed is improved.
Drawings
FIG. 1 is a policy flow chart of the present invention;
FIG. 2 is a schematic diagram of a system for quickly solving the new energy power rejection rate of an electric power system;
fig. 3 is a schematic structural diagram of an electronic device.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, shall fall within the scope of the invention.
As shown in fig. 1, a method for quickly solving the new energy power rejection rate of an electric power system comprises the following steps:
1) Collecting data such as load, direct current output, power installation scale, power regulation capacity, new energy output characteristics and the like in a system to be researched;
2) Calculating the equivalent new energy peak regulation capacity of the system based on the principle of equal electric quantity discarding, and skipping the step if the peak regulation capacity is known;
3) And correcting the peak regulation capacity of the equivalent new energy and the theoretical output sequence of the new energy according to each scheme, and calculating the power rejection rate of the scheme.
The following describes a practical system in detail. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the invention or its applications.
Examples
The following is a detailed description of an example of a certain provincial grid. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the invention or its applications.
A quick solving method of new energy power rejection rate of an electric power system comprises the following steps:
1) Collecting data such as load, direct current output, power installation scale, power regulation capacity, new energy output characteristics and the like in a system to be researched;
2) Calculating the equivalent new energy peak regulation capacity of the system based on the principle of equal electric quantity discarding, and skipping the step if the peak regulation capacity is known;
3) And correcting the peak regulation capacity of the equivalent new energy and the theoretical output sequence of the new energy according to each scheme, and calculating the power rejection rate of the scheme.
Examples
New energy planning installation of a certain province is carried out on the scale of 3100 kilowatts and 1550 kilowatts. The electricity rejection rate of the following scheme is respectively calculated:
scheme one: 3000 kilowatts of wind power and 1550 kilowatts of photovoltaic power, and other conditions are unchanged;
scheme II: wind power 2900 kilowatts, photovoltaic 1550 kilowatts, and other conditions are unchanged;
scheme III: wind power 2800 kilowatts, photovoltaic 1550 kilowatts, and other conditions are unchanged;
scheme IV: wind power 2700 kilowatts, photovoltaic 1550 kilowatts, and other conditions are unchanged;
scheme five: 3100 kilowatts of wind power, 1550 kilowatts of photovoltaic, 100 kilowatts of thermal power increase peak regulation capacity, and other conditions are unchanged.
The method comprises the following specific operation steps:
(1) Collecting data such as load, direct current output, power installation scale, power regulation capacity, new energy output characteristics and the like in a system to be researched;
(2) Calculating the peak regulation capacity of equivalent new energy of the system:
1) Firstly, calculating based on production simulation software to obtain new energy waste quantity E of a system 0 . By performing production simulation calculations for this province, the system power rejection is 52.03 hundred million kilowatt-hours.
2) New energy theoretical output sequence { C } Ri Where i=1, 2,3,..8760 }. The theoretical output statistics of the new energy saving source can obtain the output sequence of {439,627. . . 323 in kilowatts.
3) The initial value of the variable to be solved is equal to the maximum theoretical output C of new energy N ＝max(C Ri ). In the province C N =3745 kilowatts.
4) Updating the variable to be solved by searching downwards according to the step length delta C, namely C N ＝C N - Δc. Taking a step length of 1 kilowatt, and performing first iteration C N =3745-1=3744 kilowatts.
5) Corresponding system new energy waste E 1 ＝∑ i max(C Ri -C N ,0). The first iteration, the discard amount is 0.98 kilowatt-hour.
6) Comparing whether the new energy waste calculated by the two methods is within the error epsilon range, namely whether the new energy waste meets the requirement of E 1 -E 0 And (5) within the error range, entering the next step, otherwise, jumping to 4). Taking the calculation error of 0.01 hundred million kilowatt-hours, turning to 4) if the first iteration calculation error does not meet the requirement. Up to C N At 1930, the error satisfies the requirement.
7)C N The equivalent new energy peak regulation capacity of the system is obtained. The peak regulating capacity of the equivalent new energy of the system is 1930 kilokilowatts.
3. The power rejection rate for each scheme was calculated:
1) And inputting scheme data to be calculated. In the first input scheme, the wind power is 3000 kilowatts, and the photovoltaic power is 1550 kilowatts.
2) New energy theoretical output sequence { C 'of calculation scheme' Ri Where i=1, 2,3,..8760 }. New energy source of this schemeThe theoretical force sequence is {420, 605,..323 }, in kilowatts.
3) Correcting the peak regulating capacity C 'of the equivalent new energy of the system' N . The scheme does not change the peak regulation capacity, and is still 1930 kilokilowatts. In the fifth scheme, the peak regulation capacity of the equivalent new energy of the system is corrected to 2030 kilowatts, and the rest schemes are unchanged.
4) The new energy waste E-Sigma of the system of the scheme is calculated i max(C′ Ri -C′ N 0), the rejection ratio is η=e/Σ i C′ Ri . The electric quantity is 46.26 hundred million kilowatt-hours, and the electric quantity is 4.48%.
5) Repeating the steps 1) to 4) until the electricity rejection rate of all schemes is calculated. The calculation results are shown in the following table.
| Scheme one | Scheme II | Scheme III | Scheme IV | Scheme five | |
| Electric discharge rate | 4.48％ | 4.00％ | 3.56％ | 3.14％ | 3.91％ |
As shown in fig. 2, another objective of the present invention is to provide a system for quickly solving a new energy power-saving rate of an electric power system, which includes:
the acquisition module is used for acquiring the peak regulation capacity of the equivalent new energy of the system;
the calculation module is used for correcting the peak regulation capacity of the equivalent new energy and the theoretical output sequence of the new energy according to the band solution scheme and calculating the system new energy waste amount and the waste rate of the scheme;
and the output module is used for repeating the power rejection rate of all the schemes and outputting the power rejection rate.
As shown in fig. 3, a third object of the present invention is to provide an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for quickly solving the new energy power rejection rate of the electric power system when executing the computer program.
A fourth object of the present invention is to provide a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method for rapidly solving the new energy power rejection rate of the electric power system.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (6)
1. The quick solving method of the new energy power-discarding rate of the electric power system is characterized by comprising the following steps of:
obtaining the peak regulation capacity of the equivalent new energy of the system;
correcting the peak regulation capacity and the theoretical output sequence of the new energy of the equivalent new energy according to the solution scheme, and calculating the new energy waste amount and the waste rate of the system of the scheme;
repeating the electricity discarding rate of all schemes and outputting;
the specific obtaining method of the peak regulation capacity of the equivalent new energy of the system is as follows:
based on production simulation calculation, obtaining new energy waste quantity E of system 0 ；
New energy theoretical output sequence { C } Ri Where i=1, 2,3, …,8760};
the initial value of the variable to be solved is equal to the maximum theoretical output C of new energy N ＝max(C Ri )；
Updating the variable to be solved by searching downwards according to the step length delta C, namely C N ＝C N -ΔC；
Corresponding system new energy waste E 1 ＝∑ i max(C Ri -C N ,0)；
Comparing whether the new energy waste amount calculated by the two methods is within the error epsilon range, if so, outputting the equivalent new energy peak regulation capacity of the corresponding system;
comparing whether the new energy waste quantity calculated by the two methods is within the error epsilon range or not, if not, jumping to downward searching and updating the variable to be solved according to the step length delta C;
the specific steps of correcting the peak shaving capacity of the equivalent new energy and the theoretical output sequence of the new energy according to the band solving scheme are as follows:
new energy theoretical output sequence { C 'of calculation scheme' Ri Where i=1, 2,3, …,8760};
correcting the peak regulating capacity C 'of the equivalent new energy of the system' N ；
The new energy waste E-Sigma of the system of the scheme is calculated i max(C′ Ri -C′ N 0), the rejection ratio is η=e/Σ i C′ Ri 。
2. The method for quickly solving the new energy power-off rate of the electric power system according to claim 1, wherein the step of obtaining the peak shaving capacity of the equivalent new energy of the system further comprises:
load, direct current output, power installation scale, power regulation capacity and new energy output characteristic data in a system to be researched are collected.
3. The method for quickly solving the new energy power rejection rate of the electric power system according to claim 1, wherein the peak shaving capacity of the equivalent new energy of the system is directly corrected if the peak shaving capacity is known.
4. The system for quickly solving the new energy power-off rate of the electric system is based on the method for quickly solving the new energy power-off rate of the electric system according to claim 1, and is characterized by comprising the following steps:
the acquisition module is used for acquiring the peak regulation capacity of the equivalent new energy of the system;
the calculation module is used for correcting the peak regulation capacity of the equivalent new energy and the theoretical output sequence of the new energy according to the band solution scheme and calculating the system new energy waste amount and the waste rate of the scheme;
and the output module is used for repeating the power rejection rate of all the schemes and outputting the power rejection rate.
5. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method for quickly solving the new energy power rejection rate of an electrical power system as claimed in any one of claims 1 to 3 when executing the computer program.
6. A computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method for quickly solving a new energy power rejection rate of an electric power system according to any one of claims 1 to 3.
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| CN111768111A (en) * | 2020-07-01 | 2020-10-13 | 国网上海市电力公司 | New energy consumption capacity analysis method, electronic device and storage medium |
| CN111835005A (en) * | 2020-07-20 | 2020-10-27 | 中国电力工程顾问集团西北电力设计院有限公司 | Method and device for determining power grid transmission capacity of new energy base and related equipment |
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