Natural gas overpressure power generation benchmark line emission calculation method, storage medium and calculation device

Abstract

The present application relates to the field of natural gas overpressure power generation, and discloses a natural gas overpressure power generation baseline emission calculation method, a storage medium and a calculation device. The natural gas overpressure power generation baseline emission calculation method disclosed by the present application comprises: determining a calculation time period of baseline emission, wherein the calculation time period comprises a plurality of time units; determining a time correlation factor according to each time unit; and determining the baseline emission of the calculation time period based on the baseline emission of the time unit and the time correlation factor. The present application can more accurately calculate the baseline emission, avoid inaccuracy in calculation / prediction caused by annual average, affect the prediction and accounting of real emission, be conducive to designing a more reasonable pressure control method based on carbon emission, and further reduce carbon emission.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of natural gas overpressure power generation, and in particular to a natural gas overpressure power generation baseline emission calculation method, a storage medium and a calculation device. BACKGROUND

[0002] Overpressure power generation technology is a technology that recovers and converts pressure difference energy generated in industrial production into mechanical energy to drive a generator to generate electricity. Natural gas overpressure power generation technology fully utilizes the pressure energy of natural gas to generate electricity. This technology can effectively solve problems such as pipeline vibration, noise and ice blockage caused by rapid cooling during natural gas pressure regulation, fully utilize the internal energy of natural gas and not produce pollution, and meet the zero emission standard. The natural gas overpressure power generation baseline emission refers to the greenhouse gas emission of coal, oil, natural gas and the like replaced by using natural gas overpressure power generation to generate electricity.

[0003] The electricity is obtained from an identified power plant or grid, and the baseline emission can be calculated as follows:

[0004] (1)

[0005] Wherein: Baseline emission due to replacement of electricity in year y, tCO2

[0006] Factor used to determine the energy that can be generated by using the historical level of waste energy in the yth year of the project, expressed as a proportion of the total energy generated by the waste energy source in the yth year; if the waste energy generated in the yth year of the project is equal to or less than the historical level, the ratio is 1

[0007] Proportion of electricity generated by using waste energy in the project activity; if pure waste energy is used for power generation, the proportion is 1

[0008] Electricity supplied to user j from the ith power source (i can be a grid or an identified existing power source) in the yth year without the project activity, in MWh;

[0009] Emission factor of the power source i (i=gr (grid) or i=is (identified existing power source)) replaced by the project activity in the yth year, usually the carbon dioxide emission factor, in CO2 / MWh

[0010] When the recipient of the electricity generated by the project activity is only the grid or the electricity replaced by the user is provided by the connected grid system alone, and the grid is proved to be the baseline of electricity, the carbon dioxide emission factor is The CO2 emission factor for fossil fuel used in the baseline power source i in tCO2 / TJ shall be determined in accordance with the "Power System Emission Factor Calculation Tool", otherwise it shall be determined in accordance with the following formula:

[0011] (11)

[0012] where, CO2 emission factor for fossil fuel used in the baseline power source i in tCO2 / TJ, if available, obtained from reliable local or national data, otherwise taken from the IPCC default emission factors associated with the specific country

[0013] Full plant efficiency of the identified existing power plant that would be used by the jth user in the absence of the project activity

[0014] 3.6*10-3 - Conversion factor in TJ / MWh

[0015] When the project activity replaces both the imported grid electricity and the identified existing power plant, the baseline emission factor shall reflect the emission intensity of the grid and the identified existing power source in the baseline scenario, i.e. the weighted average emission factor of the electricity being replaced is calculated in accordance with the above in relation to historical values. If historical information is considered not to be appropriate to determine the relative proportion of the two power sources used in the baseline (e.g. due to unreliable data because of inaccurate or uncalibrated monitoring equipment), the most conservative emission factor of the two shall be used.

[0016] If more than one fossil fuel is used in the identified existing power plant in the baseline scenario, the relative contribution of each fuel to the total output shall be taken into account and the formula for the baseline emission shall be adjusted accordingly. The relative contribution shall be determined in accordance with historical data as referred to in paragraph 9 above. The efficiency of the identified existing power plant shall be determined in accordance with the latest version of the "Baseline Efficiency Determination Tool for Thermal or Electrical Energy Production Systems".

[0017] In real life, the demand for natural gas production varies over time. The trends can be as follows:

[0018] With economic development, the demand for natural gas increases every year;

[0019] Within a year, the demand for natural gas varies in different seasons / months, with high demand in peak seasons and low demand in off-peak seasons;

[0020] Within a day, the demand for natural gas also varies between day and night.

[0021] On the other hand, the amount of surplus pressure power generation utilized also varies over time (corresponding parameter ):

[0022] With the economic development, the annual electricity demand will grow;

[0023] The same equipment, different seasons / months / day and night electricity consumption is different;

[0024] The same equipment, different seasons / months electricity consumption is different;

[0025] For power plants, the economic benefits corresponding to different seasons and time periods are also different. In view of the above aspects, the existing baseline calculation method takes the year as the reference time unit, which leads to the following problems:

[0026] Taking the year as the reference unit, the greenhouse gas emission reduction amount generated by the residual pressure power generation cannot be accurately reflected;

[0027] Based on the calculation of the baseline year, due to the large time scale, the real carbon emissions of more detailed time units (seasons, months, hours) cannot be reflected, resulting in inaccurate calculation / prediction of the annual average. SUMMARY

[0028] The technical problem to be solved by the present application is to provide a more accurate natural gas residual pressure power generation baseline emission calculation design method, calculation method, storage medium and calculation device.

[0029] The natural gas residual pressure power generation baseline emission calculation method disclosed by the present application comprises:

[0030] Determine the calculation time period of the baseline emission, the calculation time period includes a plurality of time units;

[0031] Determine the time correlation factor according to each time unit;

[0032] Determine the baseline emission of the calculation time period based on the baseline emission of the time unit and the time correlation factor.

[0033] Preferably, the determination of the baseline emission of the time unit includes at least one of the following factors:

[0034] The factor of the energy that can be generated by using the historical level of energy, the proportion of the electricity generated in the project activity by using the energy, the electricity supplied to the user by the power source without the project activity, and the emission factor of the power source replaced by the project activity.

[0035] Preferably, the calculation time period is one year, half a year, one quarter, one month, one week or one day.

[0036] Preferably, the plurality of time units include:

[0037] Time units divided by quarters;

[0038] And / or,

[0039] a time unit divided by month;

[0040] and / or,

[0041] a time unit divided by week;

[0042] and / or,

[0043] a time unit divided by day.

[0044] Preferably, at least one of the time-related factors corresponding to each of the time units is different.

[0045] Preferably, the time-related factor is a multiplicative factor.

[0046] Preferably, the baseline emission amount satisfies:

[0047]

[0048] or

[0049]

[0050] or

[0051]

[0052]

[0053] wherein y represents a calculation time period, z represents a time unit, i represents a replaced power source, and j represents a user;

[0054] represents a baseline emission amount of a calculation time period y;

[0055] represents an adjustment factor, corresponding time unit is located in the time length of the year, and ;

[0056] represents a factor of energy that can be generated by the energy consumption of the time unit use history level of the year of the project, ;

[0057] represents a proportion of the electricity generated in the project activity by the energy consumption of the time unit use of the year of the project, ;

[0058] represents the amount of electricity supplied to user j from power source i in time unit z of period y without project activity;

[0059] represents the emission factor of power source i in time unit z of period y replaced by project activity;

[0060] represents the baseline emission amount of time unit z of period y.

[0061] Preferably, the time-related factor is an additive compensation factor.

[0062] Preferably, the annual baseline emission amount satisfies:

[0063]

[0064] or

[0065]

[0066] or

[0067]

[0068] wherein y represents the calculation period, z represents the time unit, i represents the replaced power source, and j represents the user.

[0069] represents the baseline emission amount of period y;

[0070] represents the factor of energy that can be generated by the use of historical level of energy in time unit z of period y;

[0071] represents the proportion of electricity generated by the use of energy in project activity in time unit z of period y;

[0072] represents the amount of electricity supplied to user j from power source i in time unit z of period y without project activity;

[0073] represents the emission factor of power source i in time unit z of period y replaced by project activity;

[0074] represents the baseline emission offset amount of time unit z of period y.

[0075] represents the baseline emission amount of time unit z of period y. ​a factor of the amount of energy that can be produced by the energy used in the zth time unit of the yth calculation period;

[0076] represents the amount of electricity produced by the project activity in the zth time unit of the yth calculation period;

[0077] represents the amount of electricity supplied to user j from the ith electricity source in the zth time unit of the yth calculation period without the project activity;

[0078] represents the emission factor of the electricity source i replaced by the project activity in the zth time unit of the yth calculation period.

[0079] Preferably, the baseline emission offset amount of the zth time unit of the yth calculation period satisfies:

[0080]

[0081] wherein, represents the adjustment factor, corresponding time unit is the product of the length of the yth calculation period and the deviation of the time unit from the relative annual average, and ,

[0082] represents the amount of electricity supplied to user j from the ith electricity source in the zth time unit of the yth calculation period without the project activity,

[0083] represents the emission factor of the electricity source i replaced by the project activity in the zth time unit of the yth calculation period.

[0084] Preferably, the baseline emission offset amount of the zth time unit of the yth calculation period satisfies:

[0085]

[0086] or

[0087]

[0088] or

[0089]

[0090] wherein, represents the average amount of energy media emitted in the three years before the start of the project;

[0091] represents the amount of energy used in the zth time unit of the yth calculation period;​​ The amount of waste energy medium used in energy generation per unit of time;

[0092] This indicates the first time interval y is used for calculation. The average pressure of the waste medium within each time unit;

[0093] This indicates the average pressure of waste energy media over the three years prior to the project's implementation.

[0094] Indicates the reference pressure of the waste energy medium;

[0095] This indicates the first time interval y is used for calculation. The average density of the waste energy medium under actual temperature and pressure in each time unit;

[0096] This indicates the average density of the waste energy medium under actual temperature and pressure conditions during the three years prior to the implementation of the project activities.

[0097] This represents the final / intermediate maximum theoretical energy value that can be recovered;

[0098] This indicates the first time interval y is used for calculation. The final / intermediate energy actually recovered in each time unit.

[0099] Preferably, the satisfy:

[0100]

[0101] Where z represents the number of hours in the z-th time unit within the calculation time period y;

[0102] This indicates the amount of waste energy media recovered within time h;

[0103] Indicates the specific heat of the waste energy medium;

[0104] This indicates the temperature of the waste energy medium within time h;

[0105] Indicates the reference temperature;

[0106] This indicates the first time interval y is used for calculation. Net calorific value of waste energy medium per unit time;

[0107] This indicates the consumption of each type of fuel within time h;

[0108] representing the specific heat of the waste heat medium i;

[0109] representing the temperature of each fuel over time h;

[0110] representing the average net calorific value of the waste heat medium and each fuel.

[0111] The storage medium disclosed in the application stores a computer program, and the computer program is executed by a processor to implement the natural gas overpressure power generation baseline emission calculation method.

[0112] The natural gas overpressure power generation baseline emission calculation device disclosed in the application comprises a storage medium, and the storage medium stores a computer program, and the computer program is executed by a processor to implement any of the natural gas overpressure power generation baseline emission calculation methods.

[0113] The application has the advantages that: compared with the existing baseline emission calculation method, the application more finely divides the time unit for calculation, and adjusts the baseline emission through the time correlation factor of the baseline emission changing with the time unit, so that the baseline emission can be more accurately calculated, the inaccuracy caused by the annual average is avoided, the prediction and accounting of the real emission are not affected, a more reasonable pressure control method based on carbon emission is designed, and the carbon emission is further reduced. DETAILED DESCRIPTION

[0114] The application is further described below.

[0115] The application disclosed comprises:

[0116] determining a calculation time period of the baseline emission, and the calculation time period comprises a plurality of time units;

[0117] determining a time correlation factor according to each time unit;

[0118] determining the baseline emission of the calculation time period based on the baseline emission of the time unit and the time correlation factor.

[0119] The existing baseline emission amount is usually directly calculated annually. Due to the reasons described above, direct annual calculation is difficult to obtain accurate calculation results. Therefore, the present application divides a more detailed plurality of time units in the calculation period. The time unit can be divided according to the natural date in the calculation period, for example, dividing a year into 12 months; or according to the change of the baseline emission amount, for example, dividing a year into at least one peak period and at least one flat period and valley period. On the basis of calculating the baseline emission amount of the total calculation period by using the baseline emission amount of the time unit, the present application also introduces a time-related factor to adjust the baseline emission amount of the calculation time unit, thereby obtaining more accurate results. The calculation method of the present application can be performed by one party unit alone, or can be jointly participated by multiple parties, for example, it can be related to natural gas enterprises, emission purchasing units or target customers, and national units. The time unit can be specified by any party or jointly negotiated and determined. Through the method of the present application, the surplus pressure power generation and the surplus pressure adjustment can be arranged in the most economical way, so as to maximize the economic benefits of each participating related unit.

[0120] The calculation of the baseline emission amount of the time unit can refer to the existing baseline emission amount calculation method. Therefore, in general, the determination of the baseline emission amount of the time unit includes at least one of the following factors:

[0121] The factor of the energy that can be generated by using the historical level of energy, the proportion of the electricity generated by using the energy in the project activity, the electricity supplied to the user by the power source without the project activity, and the emission factor of the power source replaced by the project activity. Among them, the proportion of the electricity generated by using the energy in the project activity and the electricity supplied to the user by the power source without the project activity are relatively easy to understand, and the factor of the energy that can be generated by using the historical level of energy is usually represented by the proportion of the energy produced by using the historical level of energy in the total energy production. The emission factor of the power source replaced by the project activity is the amount of carbon dioxide emission divided by the electricity. The specific determination and calculation of these factors will be described later.

[0122] Although the calculation period is usually one year, the calculation period can also be half a year, one quarter, one month, one week or one day. For shorter calculation periods, the calculation period can be used as a time unit for another larger calculation period after completing the calculation of the calculation period.

[0123] Correspondingly, the plurality of time units can include:

[0124] Time units divided by quarters;

[0125] And / or,

[0126] Time units divided by months;

[0127] And / or,

[0128] Time units divided by weekdays;

[0129] And / or,

[0130] Time units divided by daily time.

[0131] Specifically, time units divided by quarters can correspond to a calculation period of one year or half a year; time units divided by months can correspond to a calculation period of one year, half a year, or one quarter; time units divided by weeks can correspond to a calculation period of one year, half a year, one quarter, one month, or one week; and time units divided by days can correspond to a calculation period of one year, half a year, one quarter, one month, one week, or one day. In practice, these division methods are not necessarily used alone; multiple methods can be combined, for example, some time units can be divided by quarters, and some by months.

[0132] In the specific division of time units, the division can be based on natural dates, combined with changes in factors affecting baseline emissions. These factors include, as mentioned in the background art, natural gas demand, utilization of surplus power generation, and economic benefits corresponding to different seasons and time periods. Because changes in factors affecting baseline emissions are considered, in the preferred embodiment of this application, at least one time-related factor differs for each time unit. This includes cases where some time units have the same time-related factor, some have different time-related factors, and all time units have different time-related factors. In such cases, adjusting the time-related factors can more accurately reflect the differences between the time units, thereby obtaining more accurate calculation results.

[0133] The following example illustrates the method for calculating the baseline emissions for natural gas residual pressure power generation in this application.

[0134] The time-related factor for the variation of baseline emissions with time units can be a multiplicative factor. Adjustments to the baseline emissions calculation are made by multiplying these multiplicative factors. A multiplicative factor is a time-related factor that adjusts the baseline emissions for a time unit using a product relationship. The specific implementation method for using multiplicative factors is as follows:

[0135] In a preferred embodiment of this application, the calculation of the annual baseline emissions using a multiplicative factor and time correlation can be performed using the following formula:

[0136]

[0137] Where y represents the calculation period, z represents the time unit, i represents the power source being replaced, and j represents the user. z, i, and j mainly serve as indexes in the formula.

[0138] This represents the baseline emissions for the calculation period y;

[0139] Indicates the adjustment factor. Corresponding time unit The time length of the calculation period y, and ,For example, For a calendar year, if a time unit is 3 months (i.e., a quarter), if the time unit... Located in the The length of a year is one month, and the other two months are located in the second month. Year (or the year) (year), then the corresponding For example, if all the time units of a time period are located in the first... Year, then the corresponding .

[0140] This indicates the first time period y in the project calculation. The factor of energy that can be generated using historical levels of waste energy in a given time unit.

[0141] This indicates the first time interval y is used for calculation. The proportion of electricity generated from waste energy during project activities within each time unit.

[0142] This represents the amount of electricity supplied to user j from the i-th power source in the z-th time unit of time period y when there are no project activities.

[0143] This represents the emission factor of power source i in the z time units within the calculation period y.

[0144] In another preferred embodiment of this application, the calculation of the time-related annual baseline emissions using a multiplicative factor can be performed using the following formula:

[0145]

[0146] The meanings of each parameter are the same as in the above embodiments.

[0147] In another preferred embodiment of this application, the calculation of the time-related annual baseline emissions using a multiplicative factor can be performed using the following formula:

[0148]

[0149]

[0150] in, This represents the baseline emissions for the calculation period y. The meanings of other parameters are the same as in the above embodiments, and the same applies to the embodiments described below.

[0151] This indicates the first time period y in the project calculation. The factor of energy that can be generated using historical levels of waste energy in a given time unit. The specific determination depends on the availability of relevant data. satisfy:

[0152]

[0153] in, This indicates the average amount of waste energy media (ignition or exhaust gas) emitted in the three years prior to the start of the project, expressed in kg;

[0154] This indicates the first time interval y is used for calculation. The amount of waste energy medium used in energy generation per unit time, kg;

[0155] This indicates the first time interval y is used for calculation. The average pressure of the waste medium in each time unit, kg / m³ 2 (a);

[0156] This indicates the average pressure of the waste energy medium over the three years prior to the project's implementation, in kg / m³. 2 (a);

[0157] The reference pressure (environmental pressure) of the waste energy medium is expressed in kg / m³. 2 ;

[0158] This indicates the first time interval y is used for calculation. The average density of the waste energy medium under actual temperature and pressure in each time unit, kg / m³ 3 ;

[0159] This indicates the average density of the waste energy medium under actual temperature and pressure conditions during the three years prior to the project's implementation, expressed in kg / m³.

[0160] If the project is new or data for the existing facility is not available, then satisfied:

[0161]

[0162] The project participants prove that there is no direct monitoring of the residual heat / pressure, satisfied:

[0163]

[0164] represents the final / intermediate maximum theoretical energy value that can be recovered, TJ;

[0165] represents the final / intermediate energy actually recovered in the time unit of the zth in the calculation period y, TJ.

[0166] represents the proportion of the electricity generated in the project activities using the waste energy medium, if the waste energy medium and fossil fuel electricity generation and power supply are used, satisfied:

[0167] wherein z represents the number of hours of the zth time unit in the calculation period y. The time unit is M seasons, N months, K days, or L hours, wherein M is less than 4, N is less than 12, K is less than 31, and L is less than 24.

[0168] represents the amount of waste energy medium recovered in time h;

[0169] represents the specific heat of the waste energy medium;

[0170] represents the temperature of the waste energy medium in time h;

[0171] represents the temperature of the reference;

[0172] represents the net calorific value of the waste energy medium in the time unit of the zth in the calculation period y;

[0173] represents the consumption of each type of fuel (waste energy medium or other fuel) in time h;

[0174] represents the specific heat of the waste energy medium i;

[0175] represents the specific heat of the waste energy medium i; ​​

[0176] represents the temperature of each fuel in time h;

[0177] represents the average net heat value of the waste heat medium and each fuel.

[0178] The time-dependent factor of the baseline emission amount changing with the time unit can also use an additive compensation factor in addition to the multiplicative factor. The adjustment of the baseline emission calculation by the additive compensation factor is as follows:

[0179] In a preferred embodiment of the present application, the annual baseline emission amount using the additive compensation factor satisfies:

[0180]

[0181] wherein, represents the baseline emission offset of the zth time unit in the calculation period y, and the meanings of the other parameters are the same as described above. The abnormal correction is made by the baseline emission offset of each time unit, so as to correct the calculation of the annual baseline emission amount.

[0182] In another preferred embodiment of the present application, the annual baseline emission amount using the additive compensation factor satisfies:

[0183]

[0184] In order to facilitate calculation and data acquisition, the following formula can also be used: and for calculation, that is,

[0185]

[0186] represents the baseline emission offset of the zth time unit in the calculation period y, and the specific calculation can use the following formula:

[0187]

[0188] wherein, represents the adjustment factor, corresponding to the time unit is the product of the time length of the calculation period y and the deviation of the time unit from the relative annual average value, and For example, y is a natural year, if a time unit is 3 months (i.e. a quarter), if the time unit is located in the first month of the year, the other 2 months are located in the second year (or the third year) of the calculation period y, and the adjustment factor is 1. If the time unit is 3 months (i.e., a quarter), if the time unit .

[0189] Specifically, y is a natural year, if a time unit is 3 months (i.e., a quarter), if the time unit is located in the first month of the year, and the other two months are located in the second year (or the third year); and the corresponding emission is the peak season, which is 1 / 10 higher than the average value; then the corresponding .

[0190] In actual operation, the natural gas overpressure power generation baseline emission can be directly calculated by the above method, or a computer program can be programmed according to the above method, the computer program is stored in a storage medium, and then the processor is executed to realize the natural gas overpressure power generation baseline emission calculation method.

Claims

1. A method for calculating baseline emissions of a natural gas overpressure power generation plant, characterized in that, comprises: determining a calculation period of baseline emission, the calculation period comprising a plurality of time units; determining a time-related factor according to each time unit; determining the baseline emission of the calculation period based on the baseline emission of the time unit and the time-related factor; the baseline emission satisfies: or or wherein y represents the calculation period, z represents the time unit, i represents the replaced power source, and j represents the user; represents the baseline emissions for the calculation period y; a factor representing the energy that can be generated by the C02 emissions for the calculation period y using the history level of energy; represents the proportion of the use of energy in the project activity that generates electricity in the calculation period y; represents the amount of electricity supplied from the i-th power source supply accepting user j in the calculation period y in the absence of the project activity; represents the emission factor of the power source i replaced by the project activity in the calculation period y; a baseline emission offset representing a zth time unit of a computation time period y; This indicates the first time interval y is used for calculation. The factor of energy that can be generated using historical levels of waste energy in a given time unit; represents the proportion of the energy used to represent a time unit of the yth of the calculation period y; and denotes the amount of electricity supplied to the user j from the i-th power source in the z-th time unit in the time period y without the project activity; represents the emission factor of the power source i that replaces the zth time unit in the calculation period y by the project activity; the baseline emission offset of the zth time unit of the calculation period y satisfies: wherein, represents an adjustment factor, corresponding time unit located at the product of the time length of the calculation period y and the deviation from the relative annual average value on the time unit, and , denotes the amount of electricity supplied to the user j from the i-th power source in the z-th time unit in the time period y without the project activity, represents the emission factor of the power source i that replaces the time unit z in the calculation period y by the project activity.

2. The natural gas overpressure cogeneration baseline emissions calculation method of claim 1, wherein, the determination of the baseline emission of the time unit comprises at least one of the following factors: a factor of the energy generated by the historical level of waste energy, a proportion of the electricity generated by the waste energy in the project activity, an electricity supplied to the user by the power source without the project activity, and an emission factor of the replaced power source by the project activity.

3. The natural gas cogeneration baseline emissions calculation method of claim 1, wherein, The calculation period is one year, half a year, one quarter, one month, one week, or one day.

4. The natural gas cogeneration baseline emissions calculation method of claim 1 or 3, wherein, The plurality of time units comprises: time units divided by quarter; and / or, time units divided by month; and / or, time units divided by week; and / or, time units divided by day.

5. The natural gas cogeneration baseline emissions calculation method of claim 1, wherein, The time-related factor corresponding to each time unit is different.

6. The natural gas cogeneration baseline emissions calculation method of claim 1, wherein, The satisfies: or or wherein, represents the average amount of embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied embodied represents the amount of energy media used by the energy source during the time unit y of the calculation period; and represents the amount of energy media used by the energy source during the time unit y of the calculation period; and represents the average pressure of the time unit y of the calculation period energy medium; represents the average pressure of the ESM before the implementation of the project activity for the three years; PREF represents the reference pressure of the enthalpy medium; represents the average density of the energy medium at the actual temperature and pressure in the time unit y of the calculation period y represents the average density of the energy medium at the actual temperature and pressure in the time unit y of the calculation period y represents the average density of the EEMM in actual temperature and pressure for the three years prior to the project activity implementation; represents the final / intermediate maximum theoretical energy value that can be recovered; represents the final / intermediate energy actually recovered by the time unit of the y-th of the calculation period y. represents the final / intermediate energy actually recovered by the time unit of the y-th of the calculation period y.

7. The natural gas cogeneration baseline emissions calculation method of claim 1, wherein, The satisfies: wherein z represents the number of hours of the zth time unit in the calculation period y; represents the amount of recovered energy medium within time h; Cp represents the specific heat of the waste heat medium; T represents the temperature of the energy medium in the time h; temperature representing a reference; represents the time unit y of the calculation period y net calorific value of the energy medium; represents the consumption of each fuel during the time h; Indicates the specific heat of waste energy medium i; Tfh represents the temperature of each fuel during time h; represents the exergy medium and the average net heat value of each fuel.

8. A storage medium storing a computer program, characterized by The computer program is executed by the processor to realize the baseline emission calculation method of the natural gas overpressure power generation according to any one of claims 1 to 7.

9. A natural gas overpressure power generation baseline emissions calculation device characterized by, The storage medium comprises a computer program, and the computer program is executed by the processor to realize the baseline emission calculation method of the natural gas overpressure power generation according to any one of claims 1 to 7.

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