CN116796966A - Energy grid planning method based on double-carbon targets - Google Patents
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Abstract
The application discloses an energy grid planning method based on a double-carbon target, which is characterized by comprising the following steps of: the method comprises the steps of analyzing an energy structure; acquiring related data according to an energy demand structure; re-planning the Internet net rack; according to the application, the electric power carbon emission is calculated according to the electric quantity balance and the electric energy substitution scheme, the energy grid planning method of the double-carbon target takes the double-carbon target as a guide, the energy demand prediction and the carbon emission analysis are carried out, the electric power planning key indexes are formulated, the strong logic relation between the electric power demand and the planning project is established through peak regulation capacity balance, basic load balance and peak load balance, the electric power carbon emission verification is added in the energy grid planning, and the scientific rationality of the planning scheme is improved.
Description
Technical Field
The application relates to the technical field of electric power energy grid planning, in particular to an energy grid planning method based on a double-carbon target.
Background
The traditional energy power planning method comprises the contents of energy supply and demand, load prediction, power planning, power and electricity balance, power grid planning and the like, and can comprehensively guide the construction of regional power sources and power grid racks, the power is inadvisable to the direction of an energy Internet, and the energy Internet energy grid rack part is one of important links in the energy Internet planning, wherein the energy Internet demand analysis is more important than the energy grid rack analysis. At present, for the energy internet demand analysis part, only energy, electric quantity, electric load and the like can be analyzed independently, the energy internet data can not be organically combined as a whole, and each part lacks close connection. The following problems exist in the prior art:
1. the existing energy grid planning method based on the double-carbon targets is inconvenient to take the double-carbon targets as the lead, and lacks of analysis of new energy factors in the process of analysis of energy and electric carbon emission and electric power and electric quantity balance of verification planning;
2. the existing energy grid planning method based on the double-carbon target lacks a planning scheme on the user load side in the processes of power supply and power grid projects, planning targets and load prediction.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The present application has been made in view of the above-described problems.
Therefore, the technical problems solved by the application are as follows: the existing energy grid planning method is inconvenient to lead by taking a double-carbon target as a lead; in the process of analyzing the energy and the electric carbon emission and verifying the planned electric power and electric quantity balance, the analysis of new energy factors is lacking.
In order to solve the technical problems, the application provides the following technical scheme: the energy net rack planning method based on the double-carbon target is characterized by comprising the following steps of: comprises the steps of,
analyzing an energy structure;
acquiring related data according to an energy demand structure;
and (5) re-planning the Internet net rack.
As a preferable scheme of the energy grid planning method based on the double-carbon target, the application comprises the following steps: the analysis of the energy structure is performed by regional power consumption and maximum load and by combining with the energy development trend, and comprises,
according to the total energy consumption, predicting the total energy demand, the electric quantity and the electric load, and analyzing the energy consumption structure, the power supply structure and the electric quantity structure;
and according to the proportion of non-fossil energy, the electric energy accounts for the proportion analysis of terminal energy consumption, and the total energy demand of the planned annual region is predicted.
As a preferable scheme of the energy grid planning method based on the double-carbon target, the application comprises the following steps: the step of obtaining relevant data according to the energy demand structure comprises the steps of calculating carbon emission according to the total energy demand and the energy consumption structure and a carbon emission evaluation formula, calculating electric power carbon emission according to an electric power carbon emission formula, and formulating electric power key indexes according to the energy consumption structure and the carbon emission;
the power key indexes comprise determining the proportion of the terminal energy, the scale of clean power and the scale of external power.
As a preferable scheme of the energy grid planning method based on the double-carbon target, the application comprises the following steps: the carbon emission evaluation formula is as follows:
N carbon (C) ＝N Eliminating medicine ·λ
The electric power carbon emission amount calculation formula is as follows:
wherein N is Carbon (C) Represents carbon emission, N Eliminating medicine Represents the energy consumption, lambda represents the carbon emission coefficient, N Electric power Represents the electric carbon emission amount, N By electricity The amount of electricity used is indicated,the power generation intensity is shown.
As a preferable scheme of the energy grid planning method based on the double-carbon target, the application comprises the following steps: the re-planning of the internet network frame is specifically as follows:
calculating the local renewable energy generating capacity through renewable energy power balance;
calculating the installed capacity of various new energy sources in the planning year by analyzing the power generation rate of various renewable energy sources in the local area and the power generation utilization hours;
after the installed capacity of various new energy sources is determined, carrying out peak regulation capacity balance, and formulating a peak regulation power supply construction and transformation scheme;
according to the peak shaving capacity requirement, combining with planning of a new power supply, and determining the new peak shaving capacity and the pumped storage peak shaving capacity of the power supply according to the existing power supply peak shaving reconstruction condition;
and determining the electrochemical energy storage peak regulation capacity by calculating the difference between the peak regulation capacity demand and the newly increased peak regulation capacity of the power supply.
As a preferable scheme of the energy grid planning method based on the double-carbon target, the application comprises the following steps: the renewable energy source power consumption balance is to schedule an electric power system by monitoring the electric load and the local renewable energy source power generation amount in real time so as to ensure the supply and demand balance;
the calculation formula of the local renewable energy power generation capacity is as follows:
N generating electricity ＝C Regeneration of ·T·μ
Wherein N is Generating electricity Representing the power generation capacity of the local renewable energy source, C Regeneration of Renewable energy installation capacity, T represents renewable energy utilization hours, and μ represents efficiency of the power generation facility.
As a preferable scheme of the energy grid planning method based on the double-carbon target, the application comprises the following steps: the calculation of the installed capacity of each new energy source in the planning year comprises,
collecting data of the generated energy and the power generation utilization hours of various renewable energy sources in a local area;
determining a time range of a planning year;
calculating the average power generation amount and average power generation utilization hours of each renewable energy source in a planned year;
and calculating the installed renewable energy capacity required to be installed in the planning year according to the total required electric quantity and the renewable energy duty ratio in the planning year.
As a preferable scheme of the energy grid planning method based on the double-carbon target, the application comprises the following steps: calculating the average power generation amount and average power generation utilization hours of each renewable energy source in a planned year, wherein the average power generation amount and average power generation utilization hours are obtained by carrying out statistical analysis on historical data;
the calculation formula for calculating the installed renewable energy installation capacity required to be installed in the planning year is as follows:
wherein C is Regeneration of Renewable energy installed capacity, N Is required to The total required electricity quantity in the year is represented, alpha represents the occupied ratio, and t represents the average electricity generation utilization hour.
As a preferable scheme of the energy grid planning method based on the double-carbon target, the application comprises the following steps: the peak regulation capacity refers to the maximum capacity of the power system capable of quickly regulating the power generation and maintaining the balance of supply and demand in a short time, and the specific calculation formula is as follows:
C adjustment of ＝C Water pumping +C Electric side
Wherein C is Water pumping Representing pumped storage capacity, C Electric side Representing the energy storage capacity of the power supply side, C Adjustment of Representing peak shaving capacity.
As a preferable scheme of the energy grid planning method based on the double-carbon target, the application comprises the following steps: the size of the pumped storage capacity is determined by the volume of the reservoir and the height of the reservoir, and the specific calculation formula is as follows:
C water pumping ＝V*H*(1-r)
Wherein C is Water pumping The water pumping energy storage capacity is represented by V, the actual capacity of stored water is represented by H, the water level difference between the upstream water level and the downstream water level of the reservoir is represented by r, and the water loss ratio of water flowing from the upstream water reservoir to the downstream water reservoir is represented by r;
the energy storage capacity of the power supply side refers to the maximum capacity of the power supply side of the power system for storing electric energy by adopting an energy storage technology, and the specific calculation formula is as follows:
wherein C is Electric side Represents the energy storage capacity of the power supply side, P represents the load power, T represents the energy storage time, and D representsThe ratio of the stored electrical energy to the discharged electrical energy, d, represents the energy density of the energy storage device, ω represents the degree of loss of the device, and β represents the efficiency of the operation.
The application has the beneficial effects that: the application provides an energy grid planning method based on a dual-carbon target, which is characterized in that under the action of an internet grid, peak-valley difference in summer and winter is analyzed to carry out peak regulation balance, peak regulation capacity is determined according to analysis of the peak regulation capacity balance in summer and winter, energy internet data is organically combined as a whole, the requirements of the energy internet are better known, the energy internet is planned, energy, electric quantity and electric load can be covered, and the tight combination of energy internet planning is realized by using planning flows of evaluation, three-balance and one check; after a planning scheme comprising a power supply, a power grid, a load side and an energy storage side is formulated, the electric power carbon emission is calculated according to the electric quantity balance and the electric energy substitution scheme, the energy grid planning method of the double-carbon target takes the double-carbon target as a guide, energy demand prediction and carbon emission analysis are carried out, key indexes of electric power planning are formulated, a strong logic relation between the electric power demand and the planning project is established through peak regulation capacity balance, basic load balance and peak load balance, electric power carbon emission verification is added in the energy grid planning, and scientific rationality of the planning scheme is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is an overall method step diagram of an energy grid planning method based on a dual-carbon target.
Fig. 2 is a schematic diagram showing the comparison of the total regional energy demands according to the energy grid planning method based on the dual-carbon targets.
Fig. 3 is a schematic diagram showing regional power consumption comparison according to the energy grid planning method based on the dual-carbon target.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present application can be understood in detail, a more particular description of the application, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
While the embodiments of the present application have been illustrated and described in detail in the drawings, the cross-sectional view of the device structure is not to scale in the general sense for ease of illustration, and the drawings are merely exemplary and should not be construed as limiting the scope of the application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Also in the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper, lower, inner and outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first, second, or third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected, and coupled" should be construed broadly in this disclosure unless otherwise specifically indicated and defined, such as: can be fixed connection, detachable connection or integral connection; it may also be a mechanical connection, an electrical connection, or a direct connection, or may be indirectly connected through an intermediate medium, or may be a communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1, for a first embodiment of the present application, there is provided a dual carbon target-based energy grid planning method, including the steps of,
s1: and analyzing the energy structure.
Specifically, the analysis of the energy structure is performed by regional power consumption and maximum load and by combining with the energy development trend, and comprises,
according to the total energy consumption, predicting the total energy demand, the electric quantity and the electric load, and analyzing the energy consumption structure, the power supply structure and the electric quantity structure;
and according to the proportion of non-fossil energy, the electric energy accounts for the proportion analysis of terminal energy consumption, and the total energy demand of the planned annual region is predicted.
S2: and acquiring related data according to the energy demand structure.
Specifically, the obtaining related data according to the energy demand structure includes calculating a carbon emission according to the total energy demand and the energy consumption structure, calculating an electric power carbon emission according to an electric power carbon emission formula, and formulating an electric power key index according to the energy consumption structure and the carbon emission.
Further specifically, the carbon emission evaluation formula is as follows:
N carbon (C) ＝N Eliminating medicine ·λ
Further, the electric power carbon emission amount calculation formula is as follows:
wherein N is Carbon (C) Represents carbon emission, N Eliminating medicine Represents the energy consumption, lambda represents the carbon emission coefficient, N Electric power Represents the electric carbon emission amount, N By electricity The amount of electricity used is indicated,the power generation intensity is shown.
Specifically, the power key index includes determining a specific gravity of the terminal energy, a scale of clean power, and a scale of external power.
S3: and (5) re-planning the Internet net rack.
Specifically, the re-planning of the internet network frame comprises the steps of calculating the local renewable energy generating capacity through renewable energy power consumption balance; calculating the installed capacity of various new energy sources in the planning year by analyzing the power generation rate of various renewable energy sources in the local area and the power generation utilization hours; after the installed capacity of various new energy sources is determined, carrying out peak regulation capacity balance, and formulating a peak regulation power supply construction and transformation scheme; according to the peak shaving capacity requirement, combining with planning of a new power supply, and determining the new peak shaving capacity and the pumped storage peak shaving capacity of the power supply according to the existing power supply peak shaving reconstruction condition; and determining the electrochemical energy storage peak regulation capacity by calculating the difference between the peak regulation capacity demand and the newly increased peak regulation capacity of the power supply.
Further, the renewable energy source power consumption balance is to schedule the power system by monitoring the power load and the local renewable energy source power generation in real time so as to ensure the supply and demand balance;
the calculation formula of the local renewable energy power generation capacity is as follows:
N generating electricity ＝C Regeneration of ·T·μ
Wherein N is Generating electricity Representing the power generation capacity of the local renewable energy source, C Regeneration of Renewable energy sourceThe installed energy capacity, T, represents the number of hours of renewable energy utilization, and μ represents the efficiency of the power generation facility.
Further specifically, the calculation and planning of the installed capacity of each new energy source in the year comprises the steps of collecting the data of the generated energy and the power generation utilization hours of each renewable energy source in the local area; determining a time range of a planning year; calculating the average power generation amount and average power generation utilization hours of each renewable energy source in a planned year; and calculating the installed renewable energy capacity required to be installed in the planning year according to the total required electric quantity and the renewable energy duty ratio in the planning year.
Further, the calculation of the average power generation amount and the average power generation utilization hour number of each renewable energy source in the planning year is obtained by carrying out statistical analysis on historical data;
the calculation formula for calculating the installed renewable energy installation capacity required to be installed in the planning year is as follows:
wherein C is Regeneration of Renewable energy installed capacity, N Is required to The total required electricity quantity in the year is represented, alpha represents the occupied ratio, and t represents the average electricity generation utilization hour.
Further, the peak regulation capacity refers to the maximum capacity of the power system capable of quickly regulating the generated power and maintaining the balance of supply and demand in a short time, and the specific calculation formula is as follows:
C adjustment of ＝C Water pumping +C Electric side
Wherein C is Water pumping Representing pumped storage capacity, C Electric side Representing the energy storage capacity of the power supply side, C Adjustment of Representing peak shaving capacity.
More specifically, the size of the pumped storage capacity is determined by the volume of the reservoir and the height of the reservoir, and the specific calculation formula is as follows:
C water pumping ＝V*H*(1-r)
Wherein C is Water pumping Representing pumped storage capacity, V representing stored waterThe actual capacity, H, represents the level difference between the upstream water level and the downstream water level of the reservoir, and r represents the water loss ratio when water flows from the upstream water reservoir to the downstream water reservoir;
the energy storage capacity of the power supply side refers to the maximum capacity of the power supply side of the power system for storing electric energy by adopting an energy storage technology, and the specific calculation formula is as follows:
wherein C is Electric side The energy storage capacity of the power source side is represented by P, the load power is represented by T, the energy storage time is represented by D, the ratio of the stored electric energy to the discharged electric energy is represented by D, the energy density of the energy storage device is represented by ω, the loss degree of the device is represented by ω, and the operation efficiency is represented by β.
Example 2
Referring to fig. 2 to 3, a case of practical application of the present application is provided for a second embodiment of the present application.
Specifically, by counting the electricity consumption and the maximum load of a certain area and combining the development trend of local energy sources, the analysis of the energy source structure is carried out;
according to the condition of the total energy consumption, the total energy demand, the electric quantity and the electric load are predicted, the energy consumption structure, the power structure and the electric quantity structure are analyzed, and the specific analysis conditions are as follows:
TABLE 1
| Time | T1 | T2 | T3 | T4 | T5 |
| Total amount of energy demand | 39.45 billion ton | 48.25 million ton | 57.69 billion ton | 63.61 million tons | 76.28 million tons |
TABLE 2
Through the two tables, it is easy to find that, as time goes by, the total regional energy demand and regional power consumption are both in an ascending trend, and the ascending amplitude is obvious, so that the local internet network frame needs to be re-planned by combining a double-carbon target, and the specific planning result is as follows:
TABLE 3 Table 3
| Time | T1 | T2 | T3 | T4 | T5 |
| Total amount of energy demand after adjustment | 43.65 million tons | 45.23 billion ton | 48.32 billion ton | 47.25 million ton | 49.03 billions of tons |
TABLE 4 Table 4
From the results of the two tables, it is found that after the application is adopted, the rising amplitude is reduced, although the total energy demand and the regional power consumption are in a rising trend.
Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the application, or those not associated with practicing the application).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.
Claims (10)
1. The energy net rack planning method based on the double-carbon target is characterized by comprising the following steps of: comprises the steps of,
analyzing an energy structure;
acquiring related data according to an energy demand structure;
and (5) re-planning the Internet net rack.
2. The energy grid planning method based on the dual-carbon target as set forth in claim 1, wherein: the analysis of the energy structure is performed by regional power consumption and maximum load and by combining with the energy development trend, and comprises,
according to the total energy consumption, predicting the total energy demand, the electric quantity and the electric load, and analyzing the energy consumption structure, the power supply structure and the electric quantity structure;
and according to the proportion of non-fossil energy, the electric energy accounts for the proportion analysis of terminal energy consumption, and the total energy demand of the planned annual region is predicted.
3. The energy grid planning method based on the dual-carbon target as set forth in claim 1, wherein: the obtaining related data according to the energy demand structure comprises calculating carbon emission according to the total energy demand and the energy consumption structure, calculating electric power carbon emission according to the electric power carbon emission formula, and formulating electric power key indexes according to the energy consumption structure and the carbon emission;
the power key indexes comprise determining the proportion of the terminal energy, the scale of clean power and the scale of external power.
4. The energy grid planning method based on the dual-carbon target as set forth in claim 3, wherein: the carbon emission evaluation formula is as follows:
N carbon (C) ＝N Eliminating medicine ·λ
The electric power carbon emission amount calculation formula is as follows:
wherein N is Carbon (C) Represents carbon emission, N Eliminating medicine Represents the energy consumption, lambda represents the carbon emission coefficient, N Electric power Represents the electric carbon emission amount, N By electricity The amount of electricity used is indicated,the power generation intensity is shown.
5. The energy grid planning method based on the dual-carbon target as set forth in claim 1, wherein: the re-planning of the internet network frame is specifically as follows:
calculating the local renewable energy generating capacity through renewable energy power balance;
calculating the installed capacity of various new energy sources in the planning year by analyzing the power generation rate of various renewable energy sources in the local area and the power generation utilization hours;
after the installed capacity of various new energy sources is determined, carrying out peak regulation capacity balance, and formulating a peak regulation power supply construction and transformation scheme;
according to the peak shaving capacity requirement, combining with planning of a new power supply, and determining the new peak shaving capacity and the pumped storage peak shaving capacity of the power supply according to the existing power supply peak shaving reconstruction condition;
and determining the electrochemical energy storage peak regulation capacity by calculating the difference between the peak regulation capacity demand and the newly increased peak regulation capacity of the power supply.
6. The energy grid planning method based on the dual-carbon target as set forth in claim 5, wherein: the renewable energy source power consumption balance is to schedule an electric power system by monitoring the electric load and the local renewable energy source power generation amount in real time so as to ensure the supply and demand balance;
the calculation formula of the local renewable energy power generation capacity is as follows:
N generating electricity ＝C Regeneration of ·T·μ
Wherein N is Generating electricity Representing the power generation capacity of the local renewable energy source, C Regeneration of Renewable energy installation capacity, T represents renewable energy utilization hours, and μ represents efficiency of the power generation facility.
7. The energy grid planning method based on the dual-carbon target as set forth in claim 5, wherein: the calculation of the installed capacity of each new energy source in the planning year comprises,
collecting data of the generated energy and the power generation utilization hours of various renewable energy sources in a local area;
determining a time range of a planning year;
calculating the average power generation amount and average power generation utilization hours of each renewable energy source in a planned year;
and calculating the installed renewable energy capacity required to be installed in the planning year according to the total required electric quantity and the renewable energy duty ratio in the planning year.
8. The energy grid planning method based on the dual-carbon target as set forth in claim 7, wherein: calculating the average power generation amount and average power generation utilization hours of each renewable energy source in a planned year, wherein the average power generation amount and average power generation utilization hours are obtained by carrying out statistical analysis on historical data;
the calculation formula for calculating the installed renewable energy installation capacity required to be installed in the planning year is as follows:
wherein C is Regeneration of Renewable energy installed capacity, N Is required to The total required electricity quantity in the year is represented, alpha represents the occupied ratio, and t represents the average electricity generation utilization hour.
9. The energy grid planning method based on the dual-carbon target as set forth in claim 5, wherein: the peak regulation capacity refers to the maximum capacity of the power system capable of quickly regulating the power generation and maintaining the balance of supply and demand in a short time, and the specific calculation formula is as follows:
C adjustment of ＝C Water pumping +C Electric side
Wherein C is Water pumping Representing pumped storage capacity, C Electric side Representing the energy storage capacity of the power supply side, C Adjustment of Representing peak shaving capacity.
10. The energy grid planning method based on the dual-carbon target as set forth in any one of claims 5 to 9, wherein: the size of the pumped storage capacity is determined by the volume of the reservoir and the height of the reservoir, and the specific calculation formula is as follows:
C water pumping ＝V*H*(1-r)
Wherein, C pumping water represents pumping energy storage capacity, V represents actual capacity of stored water, H represents level difference between upstream and downstream of a reservoir, and r represents water loss ratio when water flows from the upstream reservoir to the downstream reservoir;
the energy storage capacity of the power supply side refers to the maximum capacity of the power supply side of the power system for storing electric energy by adopting an energy storage technology, and the specific calculation formula is as follows:
wherein C is Electric power The side represents the power supply side energy storage capacity, P represents the load power, T represents the energy storage time, D represents the ratio of the stored electrical energy to the discharged electrical energy, D represents the energy density of the energy storage device, ω represents the degree of loss of the device, and β represents the efficiency of operation.
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| CN117371650B (en) * | 2023-10-09 | 2024-06-07 | 国网江苏省电力有限公司连云港供电分公司 | Accurate carbon metering method and system for power distribution network considering load side electric energy substitution |
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