A method for energy internet grid planning

Abstract

The present invention discloses a method for energy internet grid planning based on dual carbon targets, including predicting energy demand and analyzing energy structure according to total energy consumption; evaluating carbon emissions according to total energy demand and energy consumption structure; formulating key power indicators according to energy consumption structure and carbon emissions; analyzing the peak-to-valley difference in summer and winter to balance peak loads and determine peak load capacity; selecting the maximum load according to power load forecast, analyzing the peak load balance, determining the grid planning, and then analyzing the peak load balance to determine the demand side response; finally, performing carbon emission verification according to energy internet grid planning. The present invention organically combines and links energy internet data as a whole to better understand the needs of energy internet and plan energy internet.

Description

Technical Field

[0001] The present invention relates to the field of Internet technology, and in particular to a method for energy Internet grid planning. Background Art

[0002] The transformation of electricity to energy internet is unstoppable. The energy grid of energy internet is one of the important links in energy internet planning, and energy internet demand analysis is the top priority of energy grid analysis. At present, for the demand analysis of energy internet, only energy, electricity, power load, etc. can be analyzed separately, and the energy internet data cannot be organically combined as a whole, and the various parts lack close connection. Summary of the invention

[0003] In response to the above-mentioned technical problems in the related technologies, the present invention proposes a method for energy Internet grid planning based on the dual carbon goals, which can overcome the above-mentioned shortcomings of the existing technical methods.

[0004] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows:

[0005] A method for energy internet grid planning based on dual carbon goals includes the following steps:

[0006] S1: Plan the energy internet grid. First, based on the total energy consumption, predict the total energy demand, electricity and power load, and analyze the energy consumption structure, power supply structure and electricity structure;

[0007] S2: Then, based on the total energy demand and the energy consumption structure, the carbon emissions are evaluated according to the carbon emissions evaluation formula;

[0008] S3: formulating key electricity indicators based on the energy consumption structure and the carbon emissions;

[0009] S4: Analyze the peak-to-valley difference between summer and winter to balance the peak load under different power output modes, and determine the peak load capacity based on the analysis of the peak load capacity balance between summer and winter;

[0010] S5: According to the power load forecast in the total energy demand, the maximum load is selected, and a peak load balance analysis is performed, and then a power grid planning including the power grid scale and power grid structure is determined, and then a peak load section with the maximum load is selected, and a peak load balance analysis is performed to determine the demand side response;

[0011] S6: Finally, carbon emissions verification is carried out according to the above energy Internet grid planning.

[0012] Furthermore, in step S2, determining the power index includes determining the proportion of terminal energy, the scale of clean power and the scale of external power.

[0013] Furthermore, in step S3, the carbon emission assessment formula is: total carbon emissions = carbon emissions from coal consumption + carbon emissions from oil consumption + carbon emissions from gas consumption + carbon emissions from externally supplied electricity.

[0014] Furthermore, in step S4, the peak-shaving capacity includes determining the capacity of pumped storage, the capacity of energy storage on the power supply side and the flexibility transformation of thermal power. The formula for calculating the peak-shaving capacity is: peak-shaving capacity = pumped storage capacity + energy storage capacity on the power supply side + peak-shaving capacity participated in the flexibility transformation of thermal power.

[0015] Further, in step S5, the demand side response includes a demand side response amount, a user energy storage response amount and an electric vehicle response amount, and the demand side response calculation formula is: demand side response = demand side response amount + user side energy storage response amount + electric vehicle response amount + interruptible load amount.

[0016] Further, in step S5, the calculation formulas for the peak load balance are: 500 kV grid load = peak load - 500 kV plant power - 220 kV and below power plant output; 220 kV grid load = peak load - 220 kV large users and 220 kV and above plant power - 110 kV and below power plant output; 500 kV capacity demand = 500 kV grid load * load-to-load ratio - 500 kV existing transformer capacity; 220 kV capacity demand = 220 kV grid load * load-to-load ratio - 220 kV existing transformer capacity.

[0017] Furthermore, in step S5, the peak load balance calculation formula is: peak load reduction amount = maximum load * 5%.

[0018] Further, in step S6, the calculation formula for the carbon emission verification is: energy and electricity carbon emissions = coal-fired power generation emissions + oil-fired power generation emissions + gas-fired power generation emissions + carbon dioxide emissions contained in the electricity transferred from the j-th provincial power grid; coal-fired power generation emissions = current year coal power generation consumption × coal-fired comprehensive emission factor; oil-fired power generation emissions = current year oil power generation consumption × fuel comprehensive emission factor; gas-fired power generation emissions = current year natural gas power generation consumption × gas comprehensive emission factor; carbon dioxide emissions contained in the electricity transferred from the j-th provincial power grid = the amount of electricity transferred from the j-th provincial power grid in the region in the year × the average carbon dioxide emission factor of the j-th provincial power grid.

[0019] The beneficial effects of the present invention are as follows: by organically combining and linking the energy internet data as a whole, the demand for and planning of the energy internet can be better understood; it can cover energy, electricity, and power load, and utilize the planning process of "one assessment + three balances + one verification" to achieve close integration of energy internet planning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is an overall flow chart of the method for energy Internet grid planning based on dual carbon goals according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention. In order to facilitate the understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0023] like Figure 1 As shown, the method for energy Internet grid planning based on dual carbon goals according to an embodiment of the present invention includes planning the energy Internet grid. First, based on the total energy consumption, the total energy demand, electricity and power load are predicted, and the energy consumption structure, power supply structure and electricity structure are analyzed.

[0024] Then, based on the total energy demand and the energy consumption structure, the carbon emissions are assessed using the carbon emissions assessment formula.

[0025] Carbon emission assessment formula: Total carbon emissions = carbon emissions from coal consumption + carbon emissions from oil consumption + carbon emissions from gas consumption + carbon emissions generated by external electricity supply.

[0026] According to the energy consumption structure and the carbon emissions, key electricity indicators are determined, and the electricity indicators include determining the proportion of terminal energy, the scale of clean electricity and the scale of external electricity.

[0027] According to the power load under different power output modes, the peak-to-valley difference in summer and winter is analyzed to perform peak-shaving balance, and the peak-shaving capacity is determined based on the analysis of the peak-shaving capacity balance in summer and winter; the peak-shaving capacity includes determining the capacity of pumped storage, the capacity of power supply side energy storage and the flexibility transformation of thermal power.

[0028] The formula for calculating the peak-shaving capacity is: peak-shaving capacity = pumped storage capacity + power supply side energy storage capacity + thermal power flexibility transformation participating in peak-shaving capacity.

[0029] Then, according to the power load forecast in the total energy demand, the maximum load is selected to analyze the peak load balance, and then the grid planning including the grid scale and grid structure is determined, and then the peak load section of the maximum load is selected to analyze the peak load balance and determine the demand side response. The demand side response includes the response amount of the demand side, the user energy storage response amount, and the electric vehicle response amount. The peak load balance calculation formula is: peak load reduction amount = maximum load * 5%.

[0030] The demand side response calculation formula is: demand side response = demand side response amount + user side energy storage response amount + electric vehicle response amount + interruptible load amount.

[0031] The calculation formula for the peak load balance is:

[0032] 500 (750) kV grid load = peak load - 500 (750) kV plant power - 220 (330) kV and below power plant output;

[0033] 220 (330) kV grid supply load = peak maximum load - 220 (330) kV large users and 220 (330) kV and above factory power - 110 kV and below power plant output;

[0034] 500 (750) kV capacity demand = 500 (750) kV grid load * capacity-load ratio - 500 (750) kV existing transformer capacity;

[0035] 220 (330) kV capacity demand = 220 (330) kV grid supply load * load-to-capacity ratio - 220 (330) kV existing transformer capacity.

[0036] Finally, carbon emissions verification is carried out based on the above-mentioned energy Internet grid planning.

[0037] The calculation formula for the carbon emission verification is:

[0038] Energy and electricity carbon emissions = coal-fired power generation emissions + oil-fired power generation emissions + gas-fired power generation emissions + carbon dioxide emissions from electricity transferred from the jth provincial power grid;

[0039] Emissions from coal-fired power generation = coal power generation consumption in the current year × comprehensive coal-fired emission factor;

[0040] Emissions from fuel-fired power generation = fuel consumption for power generation in the current year × comprehensive fuel emission factor;

[0041] Gas-fired power generation emissions = natural gas power generation consumption in the current year × comprehensive gas emission factor;

[0042] The carbon dioxide emissions embodied in the electricity transferred from the j-th provincial power grid = the amount of electricity transferred from the j-th provincial power grid to the region in that year × the average carbon dioxide emission factor of the j-th provincial power grid.

[0043] To sum up, with the help of the above-mentioned technical scheme of the present invention, by organically combining the energy Internet data as a whole, we can better understand the needs of the energy Internet and plan the energy Internet; it can cover energy, electricity, and power load, and use the planning process of "one assessment + three balances + one verification" to achieve a close integration of energy Internet planning.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for energy internet grid planning, characterized in that: The following steps are involved: S1: Plan the energy internet grid. First, based on the total energy consumption, predict the total energy demand, electricity and power load, and analyze the energy consumption structure, power supply structure and electricity structure; S2: Then, based on the total energy demand and the energy consumption structure, the carbon emissions are evaluated according to the carbon emissions evaluation formula; In step S2, the carbon emission assessment formula is: total carbon emission = carbon emission from coal consumption + carbon emission from oil consumption + carbon emission from gas consumption + carbon emission from external electricity supply; S3: formulating key electricity indicators based on the energy consumption structure and the carbon emissions; S4: Analyze the peak-to-valley difference between summer and winter to balance the peak load under different power output modes, and determine the peak load capacity based on the analysis of the peak load capacity balance between summer and winter; In step S4, the peak-shaving capacity includes determining the capacity of pumped storage, the capacity of power supply side energy storage and thermal power flexibility transformation. The formula for calculating the peak-shaving capacity is: peak-shaving capacity = pumped storage capacity + power supply side energy storage capacity + thermal power flexibility transformation participating in peak-shaving capacity; S5: According to the power load forecast in the total energy demand, the maximum load is selected, and a peak load balance analysis is performed, and then a power grid planning including the power grid scale and power grid structure is determined, and then a peak load section with the maximum load is selected, and a peak load balance analysis is performed to determine the demand side response; In step S5, the demand side response includes a demand side response amount, a user energy storage response amount and an electric vehicle response amount, and the demand side response calculation formula is: demand side response = demand side response amount + user side energy storage response amount + electric vehicle response amount + interruptible load amount; In step S5, the calculation formula for the peak load balance is: 500 kV grid load = peak load - 500 kV plant power - 220 kV and below power plant output; 220 kV grid load = peak load - 220 kV large users and 220 kV and above plant power - 110 kV and below power plant output; 500 kV capacity demand = 500 kV grid load * load-to-load ratio - 500 kV existing transformer capacity; 220 kV capacity demand = 220 kV grid load * load-to-load ratio - 220 kV existing transformer capacity; In step S5, the peak load balance calculation formula is: peak load reduction amount = maximum load * 5%; S6: Finally, according to the above energy internet grid planning, carbon emission verification is carried out; In step S6, the calculation formula for the carbon emission verification is: energy and electricity carbon emissions = coal-fired power generation emissions + oil-fired power generation emissions + gas-fired power generation emissions + carbon dioxide emissions contained in the electricity transferred from the j-th provincial power grid; coal-fired power generation emissions = current year coal power generation consumption × coal-fired comprehensive emission factor; oil-fired power generation emissions = current year oil power generation consumption × fuel comprehensive emission factor; gas-fired power generation emissions = current year natural gas power generation consumption × gas comprehensive emission factor; carbon dioxide emissions contained in the electricity transferred from the j-th provincial power grid = the amount of electricity transferred from the j-th provincial power grid in the region in the year × the average carbon dioxide emission factor of the j-th provincial power grid.

2. The method according to claim 1, characterized in that In step S3, the formulation of key electricity indicators includes determining the proportion of terminal energy, the scale of clean electricity and the scale of external electricity.

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