A method for identifying areas and amounts of surplus biomass potential

Abstract

The invention discloses a method for identifying a region and amount of surplus biomass potential, which belongs to the field of urban planning technology, and includes: using ArcGIS to process solar radiation data and administrative division data by solar radiation partitioning, and obtaining unit radiation, actual area and proportion of each solar radiation partition in the region; determining the available solar radiation through the actual area of ​​each solar radiation partition in the region, and then considering the building area and the building utilization coefficient; calculating the total potential of energy utilization of biomass resources in three categories of agriculture, forestry and domestic garbage; determining the total annual energy demand of the region, combining the available solar radiation and the total potential of energy utilization of biomass resources to complete the evaluation of the degree of regional energy self-sufficiency, and finally combining the identification logic of the region with surplus potential of biomass resources to complete the evaluation of the surplus amount of biomass resources in the region with surplus potential of biomass resources. The method solves the current situation that biomass carriers lack unified planning.

Description

Technical Field

[0001] The invention relates to the technical field of urban planning, and in particular to a method for identifying a region with residual biomass energy potential and its residual amount based on a solar energy and biomass energy combined heating system. Background Art

[0002] The heating process is one of the important sources of carbon emissions, and clean energy heating plays an important role in achieving the goal of carbon neutrality. Biomass energy and solar energy are important renewable energy sources in China's centralized heating areas, but due to the mismatch between biomass energy potential and energy demand and the lack of unified planning, a large amount of biomass resources are wasted. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the purpose of the present invention is to propose a method for identifying areas and amounts of surplus biomass potential, which solves the current situation of lack of unified planning for biomass carriers.

[0005] To achieve the above-mentioned purpose, an embodiment of the present invention proposes a method for identifying regions and surplus amounts of biomass potential, comprising the following steps: step S1, using ArcGIS to perform solar radiation zoning processing on solar radiation data and administrative division data to obtain unit radiation, actual area and proportion of each solar radiation zone in the region; step S2, determining the available solar radiation through the actual area of ​​each solar radiation zone in the region, taking into account the building area and the building utilization coefficient, and then determining the technical potential of solar heating; step S3, respectively calculating the energy utilization potential of the three major categories of biomass resources, namely agriculture, forestry and domestic waste, and adding them together to obtain the total potential for energy utilization of biomass resources; step S4, determining the total annual energy demand of the region, combining the technical potential of solar heating and the total potential for energy utilization of biomass resources to complete the assessment of the degree of regional energy self-sufficiency, and finally combining the identification logic of the region with surplus potential of biomass resources to complete the assessment of the surplus amount of biomass resources in the region with surplus potential of biomass resources.

[0006] A method for identifying regions with surplus biomass potential and surplus amount in an embodiment of the present invention solves the current situation of lack of unified planning for biomass carriers. Based on the comprehensive utilization system of solar energy and biomass energy, a mathematical model for determining the potential for resource utilization of solar energy and biomass resources in various regions, as well as a method for identifying the surplus potential of regional biomass energy and the amount of energy that needs to be supplemented are established. By determining the energy utilization potential of two major renewable resources and combining the total regional energy demand, the calculation of the surplus potential of the identification of regions with surplus biomass energy potential is completed, thereby providing data support for the unified planning of biomass energy.

[0007] In addition, the method for identifying the biomass potential surplus area and surplus amount according to the above embodiment of the present invention may also have the following additional technical features:

[0008] Furthermore, in one embodiment of the present invention, the step S1 specifically includes: step S101, obtaining a global horizontal solar irradiation resource map according to a solar data atlas, and importing solar resource data with spatial coordinate information into ArcGIS; step S102, using a natural break point clustering method to divide the global horizontal irradiation resource map into five types of regions, and obtaining the annual average plane radiation per square meter of the five types of regions based on the daily average plane radiation per square meter of the global horizontal irradiation; step S103, using ArcGIS's area tabulation tool to count the geometric areas of the regions belonging to the five types of radiation horizontal partitions, combining the total geometric area of ​​the region to obtain the proportion of the five types of radiation horizontal partitions in the region to the total area of ​​the region, and then obtaining the actual areas of the five types of radiation horizontal partitions by the proportion of the five types of radiation horizontal partitions in the region to the total area of ​​the region and the actual area of ​​the region.

[0009] Furthermore, in one embodiment of the present invention, the step S2 specifically includes: step S201, solving the theoretical solar radiation of the region according to the unit radiation of the preset region and the actual area of ​​the solar radiation zone; step S202, based on a cogeneration system assisted by solar energy and mainly provided by biomass centralized heating, determining the available solar radiation through the theoretical solar radiation of the region and considering building-related parameters; step S203, solving the technical potential of solar heating based on the available solar radiation.

[0010] Furthermore, in one embodiment of the present invention, the available solar radiation is:

[0011] Pa se =Pt se ×B n ×β×r

[0012] Among them, Pa se is the total annual available solar radiation, in ten thousand gigajoules, Pt se is the total annual solar radiation, in units of ten thousand GJ, B is the urban building area ratio coefficient, in units of %, n is the city number, β is the building utilization coefficient, and r is the roof utilization coefficient, in units of %.

[0013] Furthermore, in one embodiment of the present invention, the step S3 specifically includes: step S301, selecting rice, corn, wheat, soybean, cotton, peanut, rapeseed, potato and sugarcane as agricultural biomass resources, respectively determining the collectible resource amount and possible resource utilization amount of each crop variety, and then determining the energy utilization potential of agricultural biomass in combination with the standard coal conversion coefficient; step S302, obtaining the total amount of regional logging residues based on the wood harvesting amount, and then determining the energy utilization potential of forestry biomass in combination with the dry weight of wood and the standard coal conversion coefficient of firewood, wherein the total amount of regional logging residues includes logging residues and processing residues; step S303, determining the energy utilization potential of domestic waste by considering the population size and the total amount of recyclable waste generated per capita per year; step S304, adding the energy utilization potential of agricultural biomass, the energy utilization potential of forestry biomass and the energy utilization potential of domestic waste to obtain the total energy utilization potential of the biomass resources.

[0014] Furthermore, in one embodiment of the present invention, the agricultural biomass energy utilization potential is:

[0015]

[0016] Among them, P a is the potential for agricultural biomass energy utilization, the unit is 10,000 GJ, i is the crop number, rice, wheat, corn, soybean, cotton, peanut, rapeseed, potato and sugarcane are numbered r, w, c, s, cot, p, rap, po and sug respectively, Y is the annual output of each crop, GVR is the crop straw-to-grain ratio, CU is the collectable utilization coefficient of crop straw, SC i is the coefficient of crop straw conversion to standard coal, EUC is the possible resource utilization coefficient of crop straw, CV is the lower calorific value of coal, the unit is KJ / kg.

[0017] Furthermore, in one embodiment of the present invention, the potential for energy utilization of forestry biomass is:

[0018] P f =Th×(PR a +PR b )×W dry ×SC t ×CV×10 -8

[0019] Among them, P f is the potential for energy utilization of forestry biomass, in units of ten thousand gigajoules, and Th is the amount of wood harvested, in units of m 3 , P.R. a and PR b are the proportions of logging residues and processing residues in the wood harvest, respectively, in %, Wdry 1m 3 Dry weight of wood, in kg / m 3 , S.C. i is the coefficient of crop straw conversion to standard coal, CV is the lower calorific value of coal, and the unit is KJ / kg.

[0020] Furthermore, in one embodiment of the present invention, the energy utilization potential of domestic waste is:

[0021] P g =(PS u DW u +PS ru DW ru )EUC g ×UPG(1-α)×3.6×10 -8

[0022] Among them, P g is the potential for energy utilization of domestic waste, in units of ten thousand gigajoules, PS is the population, in units of ten thousand people, DW is the total amount of recyclable waste generated per person per year, in units of person / kg, u and ru are the numbers of towns and villages respectively, and EUC g is the possible source utilization coefficient of domestic waste, UPG is the unit power generation, the unit is kWh / t, and α is the self-use electricity rate of the power plant.

[0023] Furthermore, in one embodiment of the present invention, the step S4 specifically includes: step S401, determining the energy demand based on the residents' living electricity consumption and heat supply; step S402, constructing an energy self-sufficiency calculation model using the available solar radiation, the total potential of the biomass resources for energy utilization and the energy demand; step S403, determining the principle of local and priority use of solar energy to determine the identification logic of areas with residual potential for biomass resources, that is, when the regional energy demand can be met by relying solely on solar energy, the area will be identified as the area with residual potential for biomass resources; when the comprehensive utilization of solar energy and biomass energy can meet the regional energy demand, the area will also be identified as the area with residual potential for biomass resources; when the comprehensive utilization of solar energy and biomass energy cannot meet the regional energy demand, the area will be identified as an area with non-residual potential for biomass resources; step S404, determining the residual amount of biomass resources based on the method for identifying areas with residual potential for biomass resources.

[0024] Furthermore, in one embodiment of the present invention, the calculation formula of step S404 is specifically:

[0025] P res =IF(D≤P se ,P bio ,IF(D≥P bio +Pse ,0,P bio +P se -D))

[0026] Among them, P res is the remaining potential of biomass resources, in units of 10,000 GJ, D is the total energy demand, in units of 10,000 GJ, P se is the technical potential of solar heating, in ten thousand gigajoules, P bio It is the total potential of biomass resources for energy utilization.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0029] Figure 1 The present invention is a flowchart of a method for identifying a biomass potential surplus area and a surplus amount according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] A method for identifying a biomass potential surplus area and a surplus amount according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0032] Figure 1 The present invention is a flowchart of a method for identifying a region with biomass potential surplus and ....

[0033] like Figure 1 As shown, the method for identifying the biomass potential surplus area and the surplus amount comprises the following steps:

[0034] In step S1, ArcGIS is used to process solar radiation data and administrative division data into solar radiation zones to obtain unit radiation, actual area and proportion of each solar radiation zone in the region.

[0035] Furthermore, in one embodiment of the present invention, step S1 specifically includes:

[0036] Step S101, obtaining a global horizontal solar irradiation resource map according to a solar data atlas, and importing solar resource data with spatial coordinate information into ArcGIS;

[0037] Step S102: Use the natural break point clustering method to divide the global horizontal irradiation resource map into five types of regions. According to the daily average plane radiation per square meter of the global horizontal irradiation, the annual average plane radiation per square meter of the five types of regions is obtained. The calculation formula is as follows:

[0038] Rad m =Rad' m ×365

[0039] Where Rad is the annual average plane radiation in area m, in kWh / km 2 / y, m is the solar resource zone number, Rad' is the daily average plane radiation of zone m, the unit is kWh / km 2 / d, 365 is the parameter, which means the number of days in a year, the unit is d;

[0040] Step S103, using ArcGIS's "Area Tabulation" tool to count the geometric areas of the regions belonging to the five types of radiation horizontal partitions, combining the total geometric area of ​​the region to obtain the ratio of the area of ​​the five types of radiation horizontal partitions in the region to the total area of ​​the region, and then using this ratio and the actual area of ​​the region to obtain the actual area of ​​the five types of radiation horizontal partitions, the calculation formula is as follows:

[0041]

[0042] Where Shp is the actual area of ​​the solar radiation partition, in km 2 , m is the horizontal zone number of solar radiation, Shgc is the city geometric area, unit is km 2 , Shg is the geometric area of ​​the solar radiation partition, in km 2 , Shpc is the actual area of ​​the city, in km 2 .

[0043] In step S2, the available solar radiation is determined by taking into account the actual area of ​​each solar radiation zone in the region, the building area and the building utilization coefficient.

[0044] Furthermore, in one embodiment of the present invention, step S2 specifically includes:

[0045] Step S201, according to the unit radiation of the preset area and the actual area of ​​the solar radiation partition, the theoretical solar radiation of the area is solved, and the mathematical model is as follows:

[0046]

[0047] Among them, Pt se is the total annual solar radiation, in ten thousand gigajoules, Shp is the actual area of ​​the solar radiation zone, in km 2 , Rad is the annual average plane radiation in area m, in kWh / km 2 / y,3.6×10 -8 is the parameter, the conversion factor between kilowatt-hour and ten thousand gigajoules,

[0048] Step S202, based on the combined heat and power system with solar energy as auxiliary and biomass centralized heating as main supply, the available solar radiation is determined by taking into account the regional theoretical solar radiation and building-related parameters, and the calculation formula is:

[0049] Pa se =Pt se ×B n ×β×r

[0050] Among them, Pa se is the total annual available solar radiation, in ten thousand gigajoules, Pt se is the total annual solar radiation, in units of ten thousand GJ, B is the urban building area ratio coefficient, in units of %, n is the city number, β is the building utilization coefficient, r is the roof utilization coefficient, in units of %;

[0051] Step S203, further considering the relevant parameters of the existing technical system to determine the technical potential of solar heating, the calculation formula is:

[0052] P se =Pa se ×(1-γ)×η b

[0053] Among them, P se is the technical potential of solar heating, in ten thousand GJ, Pa se is the total annual available solar radiation, γ is the heat storage loss, η b is the thermal efficiency of the biomass boiler, in %.

[0054] In step S3, the energy utilization potentials of the three major categories of biomass resources, namely, agriculture, forestry, and domestic waste, are calculated respectively, and the total energy utilization potentials of the biomass resources are obtained by adding them up.

[0055] Furthermore, in one embodiment of the present invention, step S3 specifically includes:

[0056] Step S301, select rice, corn, wheat, soybean, cotton, peanut, rapeseed, potato and sugarcane, a total of 8 crop categories as agricultural biomass resources, determine their collectible resource amount and possible resource utilization amount, and then determine the energy utilization potential of agricultural biomass in combination with the standard coal conversion coefficient, etc. The calculation formula is:

[0057]

[0058] Among them, P a is the potential for agricultural biomass energy utilization, the unit is 10,000 GJ, i is the crop number, rice, wheat, corn, soybean, cotton, peanut, rapeseed, potato and sugarcane are numbered r, w, c, s, cot, p, rap, po and sug respectively, Y is the annual output of each crop, GVR is the crop straw-to-grain ratio, CU is the collectable utilization coefficient of crop straw, SC i is the standard coal conversion coefficient of crop straw, EUC is the possible resource utilization coefficient of crop straw, CV is the lower calorific value of coal, the unit is KJ / kg, 10 -8 is a parameter, which is the product of the conversion factors of kilogram and ton, kilojoule and ten thousand gigajoules;

[0059] Step S302, the total amount of regional logging residues is obtained according to the timber harvesting volume, and then combined with the dry weight of timber and the coefficient of firewood to standard coal, the potential for energy utilization of forestry biomass is determined, wherein the total amount of regional logging residues includes logging residues and processing residues, and the calculation formula is:

[0060] P f =Th×(PR a +PR b )×W dry ×SC t ×CV×10 -8

[0061] Among them, P f is the potential for energy utilization of forestry biomass, in units of ten thousand gigajoules, and Th is the amount of wood harvested, in units of m 3 , P.R. a and PR b are the proportions of logging residues and processing residues in the wood harvest, respectively, in %, W dry 1m 3 Dry weight of wood, in kg / m 3 , S.C. i is the standard coal conversion coefficient of crop straw, CV is the lower calorific value of coal, unit is KJ / kg, 10 -8 is a parameter, which is the product of the conversion factors of kilogram and ton, kilojoule and ten thousand gigajoules;

[0062] Step S303, considering the population and the total amount of recyclable waste generated per capita per year, the energy utilization potential of domestic waste is determined, and the calculation formula is:

[0063] P g =(PS u DW u +PS ru DW ru )EUC g ×UPG(1-α)×3.6×10 -8

[0064] Among them, P g is the potential for energy utilization of domestic waste, in units of ten thousand gigajoules, PS is the population, in units of ten thousand people, DW is the total amount of recyclable waste generated per person per year, in units of person / kg, u and ru are the numbers of towns and villages respectively, and EUC g is the possible source utilization coefficient of domestic waste, UPG is the unit power generation, the unit is kWh / t, α is the self-use rate of the power plant, 3.6×10 -8 is a parameter, which is the conversion factor between kilowatt-hour and ten thousand gigajoules;

[0065] Step S304, adding the agricultural biomass energy utilization potential, forestry biomass energy utilization potential and domestic waste energy utilization potential to obtain the total biomass resource energy utilization potential, the calculation formula is:

[0066] P bio =P a +P f +P g

[0067] Among them, P bio is the total potential for energy utilization of biomass resources, in units of ten thousand gigajoules, P a is the potential for agricultural biomass energy utilization, in units of ten thousand gigajoules, P f is the potential for energy utilization of forestry biomass, in units of ten thousand gigajoules, P g The potential for energy utilization of domestic waste is 10,000 gigajoules.

[0068] In step S4, the total annual energy demand of the region is determined, and the regional energy self-sufficiency level is evaluated in combination with the technical potential of solar heating and the total potential of biomass resource energy utilization. Finally, the remaining amount of biomass resources in the region with residual potential for biomass resources is evaluated in combination with the identification logic of the region with residual potential for biomass resources.

[0069] Furthermore, in one embodiment of the present invention, step S4 specifically includes:

[0070] Step S401, determine the energy demand based on the electricity consumption and heating supply of residents, and the calculation formula is:

[0071] D=D el ×0.0036+D st +D hw

[0072] Where D is the total energy demand, in units of 10,000 GJ, D el is the electricity consumption of residents, in ten thousand kWh, D st is the total amount of steam heat supply, in ten thousand gigajoules, D hw is the total amount of hot water heating, in units of 10,000 GJ, 0.0036 is the parameter, which is the conversion factor between 10,000 kWh and 10,000 GJ;

[0073] Step S402, using the available solar radiation, the total potential of biomass resource energy utilization and the energy demand to build an energy self-sufficiency degree calculation model, this indicator is used to reflect the degree to which the total potential of solar energy and biomass energy resource utilization meets the energy demand. The calculation formula of energy self-sufficiency is as follows:

[0074]

[0075] Where η is the degree of energy self-sufficiency, expressed in %, P bio is the potential for energy utilization of biomass resources, in units of ten thousand gigajoules, P se is the technical potential of solar heating, in 10,000 GJ, and D is the total energy demand, in 10,000 GJ;

[0076] Step S403, determining the heating mode according to the technical basis of the research, determining the principle of local and priority use of solar energy, and determining the identification logic of the area with surplus potential of biomass resources, that is, when the regional energy demand can be met by relying solely on solar energy, the area will be identified as the area with surplus potential of biomass resources, when the comprehensive utilization of solar energy and biomass energy can meet the regional energy demand, the area will also be identified as the area with surplus potential of biomass resources, and when the comprehensive utilization of solar energy and biomass energy cannot meet the regional energy demand, the area will be identified as the area with non-surplus potential of biomass resources;

[0077] Step S404, based on the method for identifying areas with remaining potential for biomass resources, determine the remaining amount of biomass resources, and the calculation formula is:

[0078] P res =IF(D≤P se ,P bio ,IF(D≥P bio +P se ,0,P bio +P se -D))

[0079] Among them, P res is the remaining potential of biomass resources, in units of 10,000 GJ, D is the total energy demand, in units of 10,000 GJ, P se is the technical potential of solar heating, in ten thousand gigajoules, P bio It is the total potential of biomass resources for energy utilization.

[0080] In summary, the method for identifying the region and amount of biomass potential surplus proposed in the embodiment of the present invention has the following beneficial effects:

[0081] (1) The energy utilization potential of solar energy and three major types of biomass energy in China was evaluated, and the current status, spatial distribution pattern and characteristics of energy supply and demand were obtained in combination with the energy demand in the corresponding regions.

[0082] (2) Combining resource potential with energy demand to obtain the degree of energy self-sufficiency and identifying areas that require external energy supplements and the amount of supplements can provide more accurate strategic recommendations for the allocation of biomass resources.

[0083] (3) Assessing the remaining areas and amounts of biomass resources can strengthen the spatial integration analysis and unified planning of biomass resources and improve the overall utilization rate of resources.

[0084] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for identifying areas with surplus biomass potential and the amount of surplus, It is characterized in that The following steps are involved: Step S1, using ArcGIS to process solar radiation data and administrative division data into solar radiation zones to obtain unit radiation, actual area and proportion of each solar radiation zone in the region; Step S2, determining the available solar radiation based on the actual area of ​​each solar radiation zone in the region, taking into account the building area and the building utilization coefficient, and then determining the technical potential of solar heating; Step S3, respectively calculating the energy utilization potential of the three categories of biomass resources, namely, agriculture, forestry, and domestic waste, and adding them together to obtain the total energy utilization potential of biomass resources; Step S4, determining the total annual energy demand of the region, combining the technical potential of solar heating and the total potential of biomass resource energy utilization to complete the assessment of the regional energy self-sufficiency, and finally combining the identification logic of the region with residual potential of biomass resources to complete the assessment of the residual amount of biomass resources in the region with residual potential of biomass resources; The step S4 specifically includes: Step S401, determining energy demand based on residents' electricity consumption and heating supply; Step S402, constructing an energy self-sufficiency calculation model using the available solar radiation, the total potential of the biomass resources for energy utilization, and the energy demand; Step S403, determining the principle of local and priority use of solar energy to determine the identification logic of the area with residual potential of biomass resources, that is, when the regional energy demand can be met by relying solely on solar energy, the area will be identified as the area with residual potential of biomass resources; when the comprehensive utilization of solar energy and biomass energy can meet the regional energy demand, the area will also be identified as the area with residual potential of biomass resources; when the comprehensive utilization of solar energy and biomass energy cannot meet the regional energy demand, the area will be identified as the area with residual potential of non-biomass resources; Step S404, determining the remaining amount of biomass resources based on the method for identifying areas with remaining potential of biomass resources; The calculation formula of step S404 is specifically: in, is the remaining potential of biomass resources, in ten thousand gigajoules, is the total energy demand in ten thousand GJ, is the technical potential of solar heating, in ten thousand gigajoules, It is the total potential of biomass resources for energy utilization.

2. A method for identifying areas and amounts of biomass potential surplus according to claim 1, It is characterized in that The step S1 specifically includes: Step S101, obtaining a global horizontal solar irradiation resource map according to a solar data atlas, and importing solar resource data with spatial coordinate information into ArcGIS; Step S102, using the natural break point clustering method to divide the global horizontal irradiation resource map into five types of regions, and obtaining the annual average plane radiation per square meter of the five types of regions according to the daily average plane radiation per square meter of the global horizontal irradiation; Step S103, use ArcGIS area tabulation tool to count the geometric areas of the five types of radiation horizontal zones in the region, combine the total geometric area of ​​the region to obtain the proportion of the five types of radiation horizontal zones in the region to the total area of ​​the region, and then obtain the actual area of ​​the five types of radiation horizontal zones by the proportion of the five types of radiation horizontal zones in the region to the total area of ​​the region and the actual area of ​​the region.

3. A method for identifying a region with surplus biomass potential and a surplus amount according to claim 1, It is characterized in that The step S2 specifically includes: Step S201, calculating the theoretical solar radiation of a region according to the unit radiation of a preset region and the actual area of ​​the solar radiation partition; Step S202, based on the combined heat and power system with solar energy as the auxiliary and biomass centralized heating as the main source, the available solar radiation is determined by taking into account the theoretical solar radiation of the region and the building-related parameters; Step S203, solving the solar heating technology potential based on the available solar radiation.

4. A method for identifying a region with surplus biomass potential and a surplus amount according to claim 1, It is characterized in that The available solar radiation is: in, is the total annual available solar radiation, measured in ten thousand gigajoules, is the total annual solar radiation, measured in ten thousand gigajoules, is the urban building area ratio coefficient, in units of , is the city number, is the building availability coefficient, is the roof utilization coefficient, in units of .

5. A method for identifying areas and amounts of biomass potential surplus according to claim 1, It is characterized in that The step S3 specifically includes: Step S301, selecting rice, corn, wheat, soybean, cotton, peanut, rapeseed, potato and sugarcane as agricultural biomass resources, determining the collectible resource amount and possible resource utilization amount of each crop variety, and then determining the energy utilization potential of agricultural biomass in combination with the standard coal conversion coefficient; Step S302, obtaining the total amount of regional logging residues according to the timber harvesting volume, and then determining the potential for energy utilization of forestry biomass by combining the timber dry weight and the firewood to standard coal conversion coefficient, wherein the total amount of regional logging residues includes logging residues and processing residues; Step S303, determining the energy utilization potential of domestic waste by considering the population and the total amount of recyclable waste generated per capita per year; Step S304, adding the agricultural biomass energy utilization potential, the forestry biomass energy utilization potential and the domestic waste energy utilization potential to obtain the total energy utilization potential of the biomass resources.

6. A method for identifying areas and amounts of biomass potential surplus according to claim 5, It is characterized in that The potential for agricultural biomass energy utilization is: in, The potential for agricultural biomass energy utilization is measured in 10,000 GJ. The numbers of crops are: rice, wheat, corn, soybean, cotton, peanut, rapeseed, potato and sugarcane. , , , , , , , and , The annual output of various crops, is the grass-to-grain ratio of crops, is the collectable utilization coefficient of crop straw, is the coefficient of crop straw converted into standard coal, is the possible resource utilization coefficient of crop straw, is the lower calorific value of coal, in .

7. A method for identifying areas and amounts of biomass potential surplus according to claim 5, It is characterized in that The potential for energy utilization of forestry biomass is: in, is the potential for energy utilization of forestry biomass, in units of 10,000 GJ. is the timber harvesting volume, in , and are the proportions of logging residues and processing residues in the wood harvest, in , is 1 The dry weight of wood in , is the coefficient of crop straw converted into standard coal, is the lower calorific value of coal, in .

8. A method for identifying areas and amounts of biomass potential surplus according to claim 5, It is characterized in that The energy utilization potential of domestic waste is: in, The potential for energy utilization of domestic waste is measured in 10,000 GJ. is the population in ten thousand people, is the total amount of recyclable waste generated per person per year, in , and are the numbers of towns and villages respectively. is the possible source utilization coefficient of domestic waste, is the unit power generation, the unit is , is the power consumption rate of the power plant.

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