Method and system for calculating carbon emission reduction of high-permeability renewable energy supply building

Abstract

The invention discloses a high-permeability renewable energy supply building carbon emission reduction calculation method and system, and belongs to the technical field of building carbon emission. The problem that an existing carbon emission reduction calculation method is not accurate and objective enough is solved. A building type library, a climate energy consumption index library, a renewable energy source and traditional energy source specimen library, a renewable energy source and traditional energy source unit electric energy conversion carbon emission factor library, a unit heat energy conversion carbon emission factor library, building energy supply equipment / system and a corresponding periodic energy efficiency ratio library are established; different energy supply equipment / system unit mass manufacturing carbon emission factor libraries, electric and thermal / cold energy storage devices and corresponding unit mass manufacturing carbon emission factor libraries, and a multi-equipment combined energy supply combination mode library; and then multi-cycle multi-energy joint energy supply carbon emission calculation is realized according to the established building type-energy consumption demand-energy type-energy supply mode-equipment type-carbon emission carbon emission calculation model.

Description

Technical Field

[0001] The present invention belongs to the technical field of building carbon emission, and specifically relates to a method and system for calculating carbon emission reduction in buildings powered by high-penetration renewable energy. Background Art

[0002] Carbon emissions refer to greenhouse gases produced by humans in the process of production and life. Its main component is carbon dioxide, which is mainly formed by the combustion of various fossil energy sources. As an important place for human life, buildings will consume a lot of energy in the process of regulating their indoor environment. At present, building energy consumption mainly relies on traditional energy. Improving the energy supply rate of renewable energy is an important technical means to form green and low-carbon buildings. However, the carbon emission reduction potential brought about by energy substitution is still unclear, especially in renewable energy-rich areas. Therefore, obtaining the carbon emission characteristics of equipment production, energy consumption and other processes involved in the energy supply process of different energy sources in buildings in order to accurately calculate the carbon reduction potential of renewable energy substitution is an important means to guide the development of green and low-carbon buildings.

[0003] At present, there are methods for calculating building carbon emissions based on all building elements (a method and system for calculating carbon emissions of all green building elements: 202311236492.X), based on multi-dimensional influencing factors (a method for calculating urban building carbon emissions based on multi-dimensional influencing factors: 202410235727.1), and the entire life cycle (building carbon emission calculation method, calculation interaction method and system for the entire life cycle: CN202410713271.5), etc. For example, the building full element method calculates carbon emissions from five dimensions: safety and durability, health and comfort, convenience of life, resource conservation, and livable environment. The design scope is wide and the calculation is relatively rough. Renewable energy is also included in resource conservation. However, this patent does not elaborate on the calculation method of building carbon emissions under the influence of specific energy types, conversion methods, equipment operating performance and other parameters. However, with the vigorous development of renewable energy, its proportion in the process of building energy consumption is getting higher and higher, and its large proportion of use has an important inhibitory effect on building carbon emissions. Therefore, it is imperative to develop a carbon emission reduction calculation method and system for buildings powered by high-penetration renewable energy. Summary of the invention

[0004] In response to the problems in the prior art, the present invention provides a method and system for calculating carbon emission reductions in buildings powered by high-penetration renewable energy. The method aims to clearly calculate the carbon emissions of buildings under different energy supplies and different supply modes, and to obtain the carbon emission reduction potential of renewable energy supply, so as to provide data support for the design of targeted building energy-saving and emission reduction plans.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A method for calculating carbon emission reduction of buildings powered by renewable energy with high penetration rate, comprising the following steps:

[0007] Step 1: Establish a climate-related building energy consumption index database based on energy consumption indicators of different regions and building types;

[0008] Step 2: Collect the existing common and region-specific building energy supply types, and establish a renewable energy sample library and a traditional energy sample library according to the energy type;

[0009] Step 3: Take electric energy and thermal energy as the energy conversion targets of renewable energy and traditional energy, obtain the carbon emission factors in the energy conversion process of renewable energy and traditional energy, and establish the carbon emission factor library of unit electric energy conversion and unit thermal energy conversion of renewable energy and traditional energy respectively;

[0010] Step 4: According to the type of building energy demand, obtain the energy consumption and carbon emission factors of the manufacturing process of different building energy supply equipment / systems, establish the energy efficiency ratio library of building energy supply equipment / systems according to the type and specification of building energy supply equipment / systems, and establish the energy conversion energy efficiency ratio change library of different building energy supply equipment / systems within the life cycle according to the operation cycle Ti and performance attenuation curve of building energy supply equipment / systems;

[0011] Step 5: According to the energy type generated by the building energy supply equipment / system, establish an energy storage efficiency coefficient library of different energy storage equipment, and then obtain a unit mass energy storage equipment carbon emission factor library of different energy storage equipment;

[0012] Step 6: Based on the multi-energy combined energy supply mode, analyze and expand the multi-energy supply combination mode, and establish a library of combined energy supply modes for various equipment;

[0013] Step 7: According to the building energy supply demand, establish a carbon emission calculation model of building type-energy consumption demand-energy type-energy supply method-energy supply equipment / system type-energy storage equipment type-carbon emissions. The carbon emission calculation model can be used to calculate carbon emissions from multi-cycle and multi-energy combined energy supply. There is no order of priority for steps 1 to 6.

[0014] Preferably, the carbon emission calculation model of building type-energy consumption demand-energy type-energy supply mode-energy supply equipment / system type-energy storage equipment type-carbon emission in step 7 is as follows:

[0015]

[0016] Among them, P out represents the carbon emissions, n represents the number of heating equipment, M 热设 Indicates the mass of a single heating device, C 热设represents the carbon emission factor of manufacturing heating equipment per unit mass; h represents the number of cooling equipment, M 冷设 represents the mass of a single cooling device, m represents the number of power supply devices, M 电设 Indicates the quality of a single power supply device, C 电设 represents the carbon emission factor of manufacturing unit mass power supply equipment; k represents the number of heat storage equipment, M 储热 Represents the mass of a single heat storage device, C 储热 represents the carbon emission factor of manufacturing unit mass thermal storage equipment; s represents the number of storage equipment, M 储电 Represents the mass of a single energy storage device, C 储电 represents the carbon emission factor of manufacturing unit mass of electricity storage equipment; l represents the number of cold storage equipment, M 储冷 Represents the mass of a single cold storage device, C 储冷 represents the carbon emission factor of manufacturing unit mass cold storage equipment; Q represents the building heat load, COP 供热 Indicates the energy efficiency ratio of the heating device, C 供热 It represents the carbon emission factor of the unit electricity or heat energy consumed by driving the heating device; E represents the building electricity load, COP 供电 Indicates the energy efficiency ratio of the power supply device, C 供电 It represents the carbon emission factor of the unit heat energy consumed by the driving power supply device; U represents the cooling load of the building, COP 供冷 Indicates the energy efficiency ratio of the cooling device, C 供冷 It represents the carbon emission factor per unit of electricity or heat consumed to drive the cooling device. i, j and T represent the cycle count in the summation calculation.

[0017] Preferably, in step 1, according to national and local building energy consumption standards, energy consumption indicators of various regions and different building types are collected to establish a climate building energy consumption indicator library, wherein the climate building energy consumption indicator library includes building cooling energy consumption indicators and building heating energy consumption indicators;

[0018] The building cooling load U is obtained by multiplying the building cooling energy consumption index by the total building area S. According to the rated cooling power of different refrigeration equipment, the building cooling load U is divided by the rated power of the refrigeration equipment to obtain the number of refrigeration equipment h;

[0019] The building heat load Q is obtained by multiplying the building heat energy consumption index by the total building area S. According to the rated heating power of different heating equipment, the building heat load Q is divided by the rated power of the heating equipment to obtain the number of heating equipment n.

[0020] Preferably, the building electrical load E is obtained by multiplying the building power per unit area Pe by the total building area S, and the number of power supply equipment m is obtained by dividing the building electrical load E by the rated power of the power supply equipment.

[0021] Preferably, in step 3, traditional energy includes coal, oil, natural gas and biomass energy; renewable energy includes solar energy, air energy, geothermal energy and wind energy;

[0022] In the process of converting the renewable energy into electric energy or thermal energy, the carbon emission factor per unit of electric energy consumption and the carbon emission factor per unit of thermal energy consumption of the renewable energy are obtained respectively according to whether additional energy consumption is consumed;

[0023] The traditional energy requires additional energy consumption during the process of conversion into electrical energy or thermal energy. Therefore, the carbon emission factor of the additional energy consumption is taken into account when obtaining the carbon emission factor per unit electrical energy consumption and the carbon emission factor per unit thermal energy consumption of the traditional energy.

[0024] Preferably, the building energy supply equipment / system in step 5 includes power supply equipment, heating equipment and cooling equipment;

[0025] Power supply equipment includes photovoltaic panels, wind turbines for buildings, large steam turbines and gas turbines;

[0026] Heating or cooling equipment: air source heat pump, ground source heat pump, biomass combustion furnace, air conditioner, absorption refrigerator, electric furnace, electric heating film and gas furnace.

[0027] Preferably, the energy storage device in step 5 includes an electric storage device, a heat storage device and a cold storage device;

[0028] The power storage equipment includes batteries;

[0029] The heat storage device includes water and a phase change material heat storage box;

[0030] The cold storage equipment includes water and a phase change material cold storage box.

[0031] A high-penetration renewable energy powered building carbon emission reduction calculation system, used to implement the high-penetration renewable energy powered building carbon emission reduction calculation method, comprising:

[0032] Building type and energy consumption demand determination module: obtain the maximum electricity, heating and cooling loads of the calculation object through the building type, area and energy consumption indicators of the corresponding climate zone, and provide basic data for the selection of heating / cooling equipment;

[0033] Building energy supply type determination module: Determine the corresponding energy supply type based on the local energy endowment characteristics of the calculation object, and provide basic data for carbon emissions calculation;

[0034] Building energy supply combination mode and equipment determination module: select the appropriate heating / cooling equipment type and quantity according to the maximum load of cooling, heating and electricity and the energy type of the calculated object, and provide basic data for the calculation of equipment carbon emissions and specific energy consumption;

[0035] Carbon emission factor determination module: provides specific carbon emission factor data for various energy sources and equipment manufacturing, and provides basic calculation parameters for the operation of the entire energy supply system;

[0036] Building carbon emission calculation module: Calculates carbon emissions under corresponding energy supply modes according to building load, energy type, equipment parameters, and carbon emission factors, and provides basic data for carbon emission reduction potential under various energy supply modes.

[0037] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0038] 1. The present invention is based on building power supply, heating and cooling, and considers key influencing factors such as building type, climate conditions, energy type, equipment type, etc. The established building carbon emission calculation model is clear and comprehensive, and has the advantage of accurately calculating building carbon emissions.

[0039] 2. The refined building carbon emission model provided by the present invention focuses its analysis on the field of renewable energy. By comparing the carbon emissions of renewable energy with those of traditional energy sources, it obtains the carbon emission reduction potential of renewable energy carbon supply, providing theoretical support for the low-carbon operation of the construction industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a flow chart of the method of the present invention;

[0041] Figure 2 It is a module diagram of the system in the present invention. DETAILED DESCRIPTION

[0042] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0043] Example 1

[0044] A method for calculating carbon emission reduction of buildings powered by renewable energy with high penetration rate, comprising the following steps:

[0045] Step 1: Establish a climate-related building energy consumption index database based on energy consumption indicators of different regions and building types;

[0046] Influenced by culture and geographical environment, buildings in different regions have different characteristics, such as Xiangxi stilt houses with wooden structures, Huizhou buildings with wooden frame structures, felt buildings, and modern buildings with cement and steel bars. Due to the different materials and thermal conductivity of the building envelope, the building loads are different. In addition, the indoor environment requires operating costs, and it is difficult for economically underdeveloped areas to pay high operating costs, such as remote areas. Therefore, the environmental control requirements are relatively offset. The climate environment is an important indicator affecting building energy consumption. The outdoor environmental temperature directly affects the calculation process of building compliance, such as cold areas and extremely hot desert areas. The energy consumption indicators required by buildings in each region during operation are volatile. Therefore, according to the national and local building energy consumption standards, energy consumption indicators of various regions and different building types are collected, and combined with the changing special geographical environment, a climate building energy consumption indicator library is established.

[0047] According to the local building cooling / heating energy consumption index (W / m 2 ) and corresponding building area (m 2 ), the total building load (W) can be calculated by multiplying the two, and the type of cooling / heating equipment is selected, such as air source heat pump, ground source heat pump, etc. (there is no fixed selection plan here), and the number of cooling / heating equipment that meets the building's cooling and heating loads is calculated based on the rated cooling / heating power (W) of different equipment.

[0048] First, according to the national local building energy consumption standards (national standards such as: "Energy Consumption Standard for Civil Buildings" (GB / T51161-2016), "General Specification for Energy Conservation and Renewable Energy Utilization in Buildings" (GB 55015-2021)), energy consumption indicators of various regions and different building types are collected to establish a climatic building energy index database. The building cooling load U is obtained by multiplying the building cooling energy consumption index in the climatic building energy index database by the total building area; the building heating load Q is obtained by multiplying the building heating energy consumption index in the climatic building energy index database by the total building area. Then, according to the rated cooling power of different equipment, the building cooling load U is divided by the rated power of the cooling equipment to obtain the number of cooling equipment h, and the building heating load Q is divided by the rated power of the heating equipment to obtain the number of heating equipment n.

[0049] The building electrical load E is obtained by multiplying the building's unit area power Pe (there are corresponding reference data in national or local standards) by the total building area S. The building electrical load E is divided by the rated power of the power supply equipment to obtain the number of power supply equipment m.

[0050] For example, in order to calculate building carbon emissions, we must first understand the local architectural style and climate characteristics. For example, in solar-rich areas, there is abundant sunlight during the day and a large temperature difference between day and night. During the day, buildings on the sunny side require almost no heating, while buildings on the shady side require more heating, and at night, a large amount of heating energy is urgently needed. Therefore, the region needs to consider daytime heat storage methods to achieve time-sharing utilization of solar energy.

[0051] Step 2: Collect the existing common and region-specific building energy supply types, and establish a renewable energy sample library and a traditional energy sample library according to the energy type;

[0052] The renewable energy sample library mainly includes: solar energy, air energy, geothermal energy, and wind energy, among which solar energy includes photovoltaic power generation and photothermal heating.

[0053] The traditional energy sample library mainly includes: coal, oil, natural gas, biomass energy, etc.

[0054] For example, in this solution, it is necessary to obtain different types of energy and carbon emission factors converted into electricity and heat in advance. For example, solar energy for buildings includes photovoltaics, solar thermal collectors, and photovoltaic / photothermal integrated modules (PV / T). Different components are combined with buildings in different ways and have different conversion efficiencies. The energy supply efficiency of the PV-Trombe wall system with natural convection cooling is relatively low, and its carbon emission reduction performance is also low, while the PV / T module driven by a water pump or heat pump refrigerant has a higher energy supply efficiency and a higher carbon emission reduction performance.

[0055] Step 3: Take electric energy and thermal energy as the energy conversion targets of renewable energy and traditional energy, obtain the carbon emission factors in the energy conversion process of renewable energy and traditional energy, and establish the carbon emission factor library of unit electric energy conversion and unit thermal energy conversion of renewable energy and traditional energy respectively;

[0056] By consulting literature and relevant standards, the conversion efficiency of different types of energy into electrical energy or thermal energy is determined. In the process of converting the renewable energy into electrical energy and thermal energy, the carbon emission factors per unit of electrical energy and per unit of thermal energy are obtained respectively according to whether additional energy consumption is consumed. For example, air energy and geothermal energy consume electrical energy to convert into thermal energy or cold energy, while solar energy and wind energy are converted into electrical energy without consuming additional energy, and the conversion of solar energy into thermal energy is divided into a passive type that does not consume energy and an active type that consumes energy.

[0057] The traditional energy consumes energy in the process of converting into electricity and heat, and the carbon emission factors of unit electricity and unit heat of the corresponding energy are obtained. For example, the mass of coal (310 g / kWh) and natural gas (59 g / kWh) required to convert the same amount of electricity are different, and thus the carbon emissions and carbon emission factors of the two are also different.

[0058] Step 4: According to the type of building energy demand, obtain the energy consumption and carbon emission factors of the manufacturing process of different building energy supply equipment / systems, establish the energy efficiency ratio library of building energy supply equipment / systems according to the type and specification of building energy supply equipment / systems, and establish the energy conversion energy efficiency ratio change library of different building energy supply equipment / systems within the life cycle according to the operation cycle Ti and performance attenuation curve of building energy supply equipment / systems;

[0059] For example, the operation process of the energy supply equipment / system is cyclical, and its energy supply efficiency varies in different cycles. Therefore, for each cycle, the carbon emissions corresponding to the energy consumption are calculated independently. For example, the power generation efficiency of the photovoltaic array is decaying. Under the same conditions, the electricity provided each year gradually decreases.

[0060] According to the equipment operation cycle Ti and performance attenuation curve, a library of energy conversion efficiency ratio changes during the life cycle of different energy supply equipment is established; the equipment operation cycle and performance attenuation curve, that is, the corresponding change process between the number of operating years and the performance, a performance change library is established through data provided by the equipment manufacturer.

[0061] Step 5: According to the energy type generated by the building energy supply equipment / system, establish an energy storage efficiency coefficient library of different energy storage equipment, and then obtain a unit mass energy storage equipment carbon emission factor library of different energy storage equipment;

[0062] Building energy supply equipment / systems include power supply equipment, heating equipment and cooling equipment;

[0063] Power supply equipment includes photovoltaic panels, wind turbines for buildings, large steam turbines and gas turbines;

[0064] Heating or cooling equipment: air source heat pump, ground source heat pump, biomass combustion furnace, air conditioner, absorption refrigerator, electric furnace, electric heating film and gas furnace;

[0065] Among them, since large steam turbines or gas turbines do not need to be purchased by themselves, the energy carbon emissions consumed in their production process are negligible. The energy consumption and carbon emission factors of other equipment manufacturing processes are collected to establish a carbon emission factor library per unit mass for different energy supply equipment / systems.

[0066] Energy storage equipment includes electricity storage equipment, heat storage equipment and cold storage equipment;

[0067] The power storage equipment includes batteries;

[0068] The heat storage device includes water and a phase change material heat storage box;

[0069] The cold storage equipment includes water and a phase change material cold storage box.

[0070] Step 6: Based on the multi-energy combined energy supply mode, analyze and expand the multi-energy supply combination mode, and establish a library of multiple equipment combined energy supply combination modes; based on economy and system complexity, the building power supply equipment combination shall not exceed 2 categories, and the heating or cooling equipment combination shall not exceed 3 categories. The heat storage equipment and the cold storage equipment can be the same general equipment, and similarly, the heating equipment and the cooling equipment can be the same general equipment.

[0071] Step 7: According to the building energy supply demand, establish a carbon emission calculation model of building type - energy consumption demand - energy type - energy supply method - energy supply equipment / system type - energy storage equipment type - carbon emissions:

[0072]

[0073] Among them, P out represents the carbon emissions, n represents the number of heating equipment, M 热设 Indicates the mass of a single heating device, C 热设 represents the carbon emission factor of manufacturing heating equipment per unit mass; h represents the number of cooling equipment, M 冷设 represents the mass of a single cooling device, m represents the number of power supply devices, M 电设 Indicates the quality of a single power supply device, C 电设 represents the carbon emission factor of manufacturing unit mass power supply equipment; k represents the number of heat storage equipment, M 储热 Represents the mass of a single heat storage device, C 储热 represents the carbon emission factor of manufacturing unit mass thermal storage equipment; s represents the number of storage equipment, M 储电 Represents the mass of a single energy storage device, C 储电 represents the carbon emission factor of manufacturing unit mass of electricity storage equipment; l represents the number of cold storage equipment, M 储冷 Represents the mass of a single cold storage device, C 储冷 represents the carbon emission factor of manufacturing unit mass cold storage equipment; Q represents the building heat load, COP 供热 Indicates the energy efficiency ratio of the heating device, C 供热 It represents the carbon emission factor of the unit electricity or heat energy consumed by driving the heating device; E represents the building electricity load, COP 供电 Indicates the energy efficiency ratio of the power supply device, C 供电 It represents the carbon emission factor of the unit heat energy consumed by the driving power supply device; U represents the cooling load of the building, COP 供冷 Indicates the energy efficiency ratio of the cooling device, C 供冷 It represents the carbon emission factor of the unit electricity or heat energy consumed by driving the cooling device, and i, j and T represent the cycle count in the summation calculation;

[0074] The carbon emissions calculation model is used to realize the calculation of carbon emissions from multi-cycle and multi-energy joint energy supply.

[0075] For example, a 150-square-meter university building in Chengdu has a 3KW photovoltaic array installed on the roof, and its summer cooling load index is about 120W / m 2 The winter heat load index is about 80W / m 2 , lighting and other electrical load indicators are about 30W / m 2 , that is, the total cooling load of the building is 18kW, the heating load is 12kW, and the electrical load is 4.5kW. A 20kW air source heat pump is used as a heating and cooling device, and four 12V, 200Ah lead-acid batteries are used for power storage. The carbon emissions of producing photovoltaic modules are 550kgCO2 / kW, the carbon emissions of producing air source heat pumps are 70,000kgCO2 / unit, and the carbon emission index of producing lead-acid batteries is 31kg CO2 / kVAh. Its total manufacturing carbon emissions are about 71960kg. A single day of cooling consumes 62kwh of electricity, a single day of heating consumes 37.4kWh, and a single day of lighting consumes 45kwh. The total amount for the whole year can be calculated based on the heating period and the cooling period. The total power consumption minus the photovoltaic power generation can be used to obtain the power consumption of the power grid, thereby calculating the carbon emissions in a single year of operation.

[0076] Example 2

[0077] like Figure 2 As shown, a carbon emission reduction calculation system for buildings powered by renewable energy with high penetration rate includes:

[0078] Building type and energy consumption demand determination module: obtain the maximum electricity, heating and cooling loads of the calculation object through the building type, area and energy consumption indicators of the corresponding climate zone, and provide basic data for the selection of heating / cooling equipment;

[0079] Building energy supply type determination module: Determine the corresponding energy supply type based on the local energy endowment characteristics of the calculation object, and provide basic data for carbon emissions calculation;

[0080] Building energy supply combination mode and equipment determination module: select the appropriate heating / cooling equipment type and quantity according to the maximum load of cooling, heating and electricity and the energy type of the calculated object, and provide basic data for the calculation of equipment carbon emissions and specific energy consumption;

[0081] Carbon emission factor determination module: provides specific carbon emission factor data for various energy sources and equipment manufacturing, and provides basic calculation parameters for the operation of the entire energy supply system;

[0082] Building carbon emission calculation module: Calculates carbon emissions under corresponding energy supply modes according to building load, energy type, equipment parameters, and carbon emission factors, and provides basic data for carbon emission reduction potential under various energy supply modes.

[0083] The high-permeability renewable energy powered building carbon emission reduction calculation system is used to implement the high-permeability renewable energy powered building carbon emission reduction calculation method described in Example 1.

[0084] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A method for calculating carbon emission reduction of buildings powered by high-penetration renewable energy, characterized in that: The following steps are involved: Step 1: Establish a climate-related building energy consumption index database based on energy consumption indicators of different regions and building types; Step 2: Collect the existing common and region-specific building energy supply types, and establish a renewable energy sample library and a traditional energy sample library according to the energy type; Step 3: Take electric energy and thermal energy as the energy conversion targets of renewable energy and traditional energy, obtain the carbon emission factors in the energy conversion process of renewable energy and traditional energy, and establish the carbon emission factor library of unit electric energy conversion and unit thermal energy conversion of renewable energy and traditional energy respectively; Step 4: According to the type of building energy demand, obtain the energy consumption and carbon emission factors of the manufacturing process of different building energy supply equipment / systems, establish the energy efficiency ratio library of building energy supply equipment / systems according to the type and specification of building energy supply equipment / systems, and establish the energy conversion energy efficiency ratio change library of different building energy supply equipment / systems within the life cycle according to the operation cycle Ti and performance attenuation curve of building energy supply equipment / systems; Step 5: According to the energy type generated by the building energy supply equipment / system, establish an energy storage efficiency coefficient library of different energy storage equipment, and then obtain a unit mass energy storage equipment carbon emission factor library of different energy storage equipment; Step 6: Based on the multi-energy combined energy supply mode, analyze and expand the multi-energy supply combination mode, and establish a library of combined energy supply modes for various equipment; Step 7: According to the building energy supply demand, establish a carbon emission calculation model of building type-energy consumption demand-energy type-energy supply method-energy supply equipment / system type-energy storage equipment type-carbon emissions. The carbon emission calculation model can be used to calculate carbon emissions from multi-cycle and multi-energy combined energy supply. There is no order of priority for steps 1 to 6.

2. The method for calculating carbon emission reduction of buildings powered by high-penetration renewable energy according to claim 1 is characterized by: The carbon emission calculation model of building type - energy demand - energy type - energy supply method - energy supply equipment / system type - energy storage equipment type - carbon emission in step 7 is as follows: Among them, P out represents the carbon emissions, n represents the number of heating equipment, M 热设 Indicates the mass of a single heating device, C 热设 represents the carbon emission factor of manufacturing heating equipment per unit mass; h represents the number of cooling equipment, M 冷设 represents the mass of a single cooling device, m represents the number of power supply devices, M 电设 Indicates the quality of a single power supply device, C 电设 represents the carbon emission factor of manufacturing unit mass power supply equipment; k represents the number of heat storage equipment, M 储热 Represents the mass of a single heat storage device, C 储热 represents the carbon emission factor of manufacturing unit mass thermal storage equipment; s represents the number of storage equipment, M 储电 Represents the mass of a single energy storage device, C 储电 represents the carbon emission factor of manufacturing unit mass storage equipment; l represents the number of cold storage equipment, M 储冷 Represents the mass of a single cold storage device, C 储冷 represents the carbon emission factor of manufacturing unit mass cold storage equipment; Q represents the building heat load, COP 供热 Indicates the energy efficiency ratio of the heating device, C 供热 It represents the carbon emission factor of the unit electricity or heat energy consumed by driving the heating device; E represents the building electricity load, COP 供电 Indicates the energy efficiency ratio of the power supply device, C 供电 It represents the carbon emission factor of the unit heat energy consumed by the driving power supply device; U represents the cooling load of the building, COP 供冷 Indicates the energy efficiency ratio of the cooling device, C 供冷 It represents the carbon emission factor per unit of electricity or heat consumed to drive the cooling device. i, j and T represent the cycle count in the summation calculation.

3. The method for calculating carbon emission reduction of buildings powered by high-penetration renewable energy according to claim 2 is characterized by: In step 1, according to national and local building energy consumption standards, energy consumption indicators of various regions and different building types are collected to establish a climate building energy consumption indicator library, wherein the climate building energy consumption indicator library includes building cooling energy consumption indicators and building heating energy consumption indicators; The building cooling load U is obtained by multiplying the building cooling energy consumption index by the total building area S. According to the rated cooling power of different refrigeration equipment, the building cooling load U is divided by the rated power of the refrigeration equipment to obtain the number of refrigeration equipment h; The building heat load Q is obtained by multiplying the building heat energy consumption index by the total building area S. According to the rated heating power of different heating equipment, the building heat load Q is divided by the rated power of the heating equipment to obtain the number of heating equipment n.

4. The method for calculating carbon emission reduction of buildings powered by high-penetration renewable energy according to claim 2 is characterized by: The building electrical load E is obtained by multiplying the building power per unit area Pe by the total building area S. The building electrical load E is divided by the rated power of the power supply equipment to obtain the number of power supply equipment m.

5. The method for calculating carbon emission reduction of buildings powered by high-penetration renewable energy according to claim 1 is characterized by: In step 3, traditional energy includes coal, oil, natural gas and biomass energy; renewable energy includes solar energy, air energy, geothermal energy and wind energy; In the process of converting the renewable energy into electric energy or thermal energy, the carbon emission factor per unit of electric energy consumption and the carbon emission factor per unit of thermal energy consumption of the renewable energy are obtained respectively according to whether additional energy consumption is consumed; The traditional energy requires additional energy consumption during the process of conversion into electrical energy or thermal energy. Therefore, the carbon emission factor of the additional energy consumption is taken into account when obtaining the carbon emission factor per unit electrical energy consumption and the carbon emission factor per unit thermal energy consumption of the traditional energy.

6. A method for calculating carbon emission reductions in buildings powered by renewable energy with high penetration rate according to claim 5, characterized in that: The building energy supply equipment / system in step 5 includes power supply equipment, heating equipment and cooling equipment; Power supply equipment includes photovoltaic panels, wind turbines for buildings, large steam turbines and gas turbines; Heating or cooling equipment: air source heat pump, ground source heat pump, biomass combustion furnace, air conditioner, absorption refrigerator, electric furnace, electric heating film and gas furnace.

7. A method and system for calculating carbon emission reduction of buildings powered by high-penetration renewable energy according to claim 1, characterized in that: In step 5, the energy storage equipment includes electric storage equipment, heat storage equipment and cold storage equipment; The power storage equipment includes batteries; The heat storage device includes water and a phase change material heat storage box; The cold storage equipment includes water and a phase change material cold storage box.

8. A carbon emission reduction calculation system for buildings powered by renewable energy with high penetration rate, characterized in that: A method for calculating carbon emission reductions in buildings powered by renewable energy with high penetration rates as described in any one of claims 1 to 7, comprising: Building type and energy consumption demand determination module: obtain the maximum electricity, heating and cooling loads of the calculation object through the building type, area and energy consumption indicators of the corresponding climate zone, and provide basic data for the selection of heating / cooling equipment; Building energy supply type determination module: Determine the corresponding energy supply type based on the local energy endowment characteristics of the calculation object, and provide basic data for carbon emissions calculation; Building energy supply combination mode and equipment determination module: select the appropriate heating / cooling equipment type and quantity according to the maximum load of cooling, heating and electricity and the energy type of the calculated object, and provide basic data for the calculation of equipment carbon emissions and specific energy consumption; Carbon emission factor determination module: provides specific carbon emission factor data for various energy sources and equipment manufacturing, and provides basic calculation parameters for the operation of the entire energy supply system; Building carbon emission calculation module: Calculates carbon emissions under corresponding energy supply modes according to building load, energy type, equipment parameters, and carbon emission factors, and provides basic data for carbon emission reduction potential under various energy supply modes.

Images