Method, device and system for determining carbon emissions and value of grid-connected thermal power generating units

Abstract

The present invention discloses a method, device and system for determining the grid-connected carbon emissions and value of thermal power generating units, the method comprising obtaining the grid-connected electricity; based on the grid-connected electricity, determining the trading electricity and carbon rights prices of different trading markets with the goal of maximizing market returns; determining the carbon emissions corresponding to different trading markets according to the trading electricity and carbon emission coefficients of different trading markets; calculating the carbon emission costs corresponding to different trading markets according to the carbon rights prices and carbon emissions corresponding to different trading markets; summing up the carbon emission costs corresponding to each trading market to obtain the grid-connected carbon emission value, and sending it to the management center. The present invention can clarify the carbon emissions of the grid-connected output of energy units, finely manage the main body responsible for carbon emission costs, promote energy-saving and consumption-reducing transformation on the power generation side, and guide low-carbon electricity consumption on the power consumption side.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric power engineering, and in particular relates to a method, device and system for determining the grid-connected carbon emissions and value of a thermal power generating set. Background Art

[0002] With the continuous development and maturity of the national unified electricity market and carbon market, the power generation industry has become the first industry to be included in the carbon market, which has brought great impact on the development of the electricity market and made the connection between the electricity market and the carbon market closer. However, in the existing technology, during a carbon market compliance cycle, the power generation entities that often use thermal power generation transfer all carbon costs to the electricity user side through the electricity market, causing the electricity user side to bear carbon emission costs that exceed the electricity consumption, which cannot promote energy-saving and consumption-reducing transformation on the power generation side and guide the low-carbon electricity consumption on the electricity user side. It is necessary to promote the market-guided energy-saving and consumption-reduction goals through refined power generation carbon emission responsibility management. Summary of the invention

[0003] In response to the above problems, the present invention proposes a method, device and system for determining the carbon emissions and value of grid-connected thermal power generating units, which can clarify the carbon emissions of the grid-connected part of the thermal power unit output, finely manage the main body bearing the carbon emission costs of power generation, promote energy-saving and consumption-reducing transformation on the power generation side and guide low-carbon electricity consumption on the power consumption side.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] In a first aspect, the present invention provides a method for determining the carbon emissions and value of a thermal power generating unit connected to the grid, comprising:

[0006] Obtain grid-connected electricity;

[0007] Based on the grid-connected electricity, with the goal of maximizing market revenue, determine the transaction electricity and carbon rights prices in different trading markets;

[0008] According to the transaction volume and carbon emission coefficient of different trading markets, the corresponding carbon emissions of different trading markets are determined;

[0009] Calculate the carbon emission costs corresponding to different trading markets based on the carbon rights prices and carbon emissions corresponding to different trading markets;

[0010] The carbon emission costs corresponding to each trading market are added up to obtain the grid-connected carbon emission value, and sent to the management center.

[0011] Optionally, methods for determining the carbon rights price in different trading markets include:

[0012] Calculate the predicted carbon emissions corresponding to the grid-connected electricity;

[0013] The carbon rights trading price is determined based on the predicted carbon emissions, the historical power generation carbon emissions and the average carbon rights trading price of the historical power generation carbon emissions.

[0014] Optionally, the method for calculating the predicted value of carbon emissions corresponding to the grid-connected electricity includes:

[0015] Based on the grid-connected electricity, historical transaction information, and the proportion of future grid-connected thermal power installed capacity relative to the proportion of new energy installed capacity, with the highest rate of return as the goal, forecast the power load and the carbon market supply and demand relationship;

[0016] Based on the power load forecast, the future proportion of grid-connected thermal power installed capacity relative to the proportion of new energy installed capacity and the supply and demand relationship in the carbon market, the predicted carbon emissions corresponding to the grid-connected electricity volume is calculated.

[0017] Optionally, the calculation formula for the predicted carbon emission value is:

[0018]

[0019] Among them, T b,ty represents the predicted carbon emission value corresponding to the grid-connected electricity in period t, Q t,y is the load-side power consumption corresponding to time period t, i is the i-th unit of the power plant participating in the power transaction; z is the z-th time period participating in the transaction; n is the total number of generators participating in the power transaction of the power plant; β i,t is the carbon emission coefficient of n generating units in the past z periods; It is a correction factor based on the proportion of thermal power generation in the historical grid-connected electricity;

[0020]

[0021]

[0022] In the formula, Q h Q is the amount of thermal power generated and connected to the grid; t is the total grid-connected electricity; m is the sample size set of historical values; κ is the correction coefficient for the change in the planned thermal power installed capacity when the future electricity is delivered; ΔP h Plan to increase the capacity of thermal power installed capacity when delivering future electricity; ΔP q The planned new energy installed capacity for future electricity delivery; ΔP z Add capacity to the total installed capacity planned for future electricity delivery.

[0023] Optionally, the calculation formula for the carbon rights trading price is:

[0024]

[0025] In the formula, p t,yjis the carbon rights trading price in the j-type electricity trading market, T b,tyj is the historical carbon emissions of power generation in the j-type power trading market, p t,lj is the average carbon rights trading price of historical power generation carbon emissions in the j-type power trading market; j = 1, 2, 3, representing the medium- and long-term, spot, and ancillary service market types respectively; T b,tlj is the corresponding carbon emission value of the historical grid-connected electricity in the j-type power trading market.

[0026] Optionally, the method for determining the transaction power in different transaction markets includes:

[0027] Calculate the revenue corresponding to the transaction unit electricity in different trading markets. The calculation formula is:

[0028]

[0029] In the formula, p i,dy,j is the corresponding rate of return per unit of electricity of the i-th unit participating in the trading market; p dy ,j is the predicted electricity price of the j-type power trading market, where j=1,2,3, representing the medium- and long-term trading market, the spot trading market, and the ancillary service trading market, respectively; Q i,e is the grid-connected power of thermal power generation, T b p t,y,j is the carbon emission cost corresponding to the amount of thermal power generation connected to the grid in the j-type power trading market;

[0030] With the goal of maximizing market revenue and the constraint that the total amount of traded electricity in different trading markets is equal to the grid-connected electricity, the trading electricity in different trading markets is determined.

[0031] Optionally, the carbon emission calculation formula is:

[0032]

[0033] Where, T i,e,c 、T i,e,x 、T i,e,f are the carbon emissions corresponding to the electricity traded by thermal power generating units in the medium- and long-term, spot, and ancillary service markets, β i,e is the grid-connected carbon emission coefficient of thermal power generating unit i, Q i,e,c , Q i,e,x , Q i,e,f They are respectively the trading electricity volumes of thermal power generating units participating in the medium- and long-term, spot, and ancillary service markets.

[0034] Optionally, the method for determining the grid-connected carbon emissions and value of thermal power generating units further includes:

[0035] Calculate the output of thermal power generating units;

[0036] Calculate the power generation output based on the output of the thermal power generating set and the heat output metering data;

[0037] Based on the power generation output and the grid-connected power, the power consumption of the generator set is calculated.

[0038] Optionally, the method for determining the grid-connected carbon emissions and value of thermal power generating units further includes:

[0039] The self-use carbon emission of the generator set is calculated based on the self-use electricity of the generator set and the corresponding carbon emission coefficient.

[0040] Optionally, the calculation formula for the self-use carbon emissions of the generator set is:

[0041]

[0042]

[0043] Where, T z β is the carbon emission of thermal power generating units for their own use; i,t is the carbon emission coefficient of thermal power generating unit i at the tth moment; Q i,t is the self-consumption of thermal power generation unit i at the tth moment, n and m are the number of grid-connected generation units and the number of grid-connected time periods in this period respectively; P i,f is the total output power of the i-th generator set; P i,r is the heating power of the i-th generator set; P i,b is the grid-connected output power of the i-th generator set.

[0044] In a second aspect, the present invention provides a device for determining the carbon emissions and value of a thermal power generating set connected to the grid, comprising:

[0045] An acquisition module is used to acquire grid-connected power;

[0046] A first determination module is used to determine the transaction power and carbon right price of different trading markets based on the grid-connected power with the goal of maximizing market revenue;

[0047] The second determination module is used to determine the carbon emissions corresponding to different trading markets according to the transaction electricity and carbon emission coefficients of different trading markets;

[0048] The first calculation module is used to calculate the carbon emission costs corresponding to different trading markets according to the carbon rights prices and carbon emissions corresponding to different trading markets;

[0049] The second calculation module is used to add up the carbon emission costs corresponding to different trading markets, obtain the grid-connected carbon emission value, and send it to the management center to guide energy-saving and consumption-reducing transformation, as well as to guide low-carbon electricity consumption on the electricity user side.

[0050] In a third aspect, the present invention provides a system for determining grid-connected carbon emissions and value of thermal power generating units, including a storage medium and a processor;

[0051] The storage medium is used to store instructions;

[0052] The processor is configured to operate according to the instructions to execute the method according to any one of the methods in the first aspect.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] The present invention refines the amount of carbon emission cost transfer that the electricity market needs to bear, which is different from the current problem that all carbon emission costs of power plants are borne by the market entities on the load side. It provides a basis and support for optimizing power saving transformation of plant power consumption and power trading selection on the load side.

[0055] The present invention aims at thermal power generating units participating in transactions of different types of electricity markets. The present invention adopts a method combining historical data of carbon right market prices, electricity load and electricity carbon emission data forecasts to average historical carbon right trading prices, and predict carbon right trading prices at future moments corresponding to medium- and long-term, spot and ancillary service market transactions. At the same time, the carbon right emissions in the medium- and long-term, spot and ancillary service markets are predicted in combination with the load forecast results and the thermal power generation. The carbon emission costs of thermal power participating in the medium- and long-term, spot and ancillary service markets are calculated through the carbon right trading prices predicted by historical data and the future thermal power carbon emissions. This provides carbon emission cost decision-making support for the declaration of electricity trading prices (including carbon emission costs) of thermal power generating units participating in the medium- and long-term, spot and ancillary service markets, and improves the price declaration strategy of thermal power market entities participating in the medium- and long-term, spot and ancillary service markets.

[0056] The present invention considers the proportion of future thermal power generation in the total future grid-connected electricity and the carbon emissions of thermal power through load forecasting, determines the relationship between the carbon rights amount and the transaction price based on the carbon rights market transaction, considers the factors of the proportion of thermal power installed units and power generation output, provides the accuracy of predicting future carbon emission trading prices and the carbon rights cost corresponding to power generation, provides a decision-making basis for the carbon rights cost of power generation based on historical carbon rights trading prices and future power generation carbon emissions, and improves the profitability of thermal power in the electricity market and the carbon rights market. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

[0058] Figure 1 A schematic flow chart of a grid-connected carbon emission accounting method according to an embodiment of the present invention;

[0059] Figure 2This is a carbon emission accounting and fee settlement process for a thermal power plant participating in the market according to an embodiment of the present invention. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of protection of the present invention.

[0061] The application principle of the present invention is described in detail below in conjunction with the accompanying drawings.

[0062] Example 1

[0063] The present invention provides a method for determining the grid-connected carbon emissions and value of a thermal power generating set, comprising the following steps:

[0064] (1) Obtaining grid-connected electricity; in a specific implementation process, the grid-connected electricity can be directly obtained through a meter;

[0065] (2) Based on the grid-connected electricity, with the goal of maximizing market revenue, determine the trading electricity and carbon rights prices in different trading markets;

[0066] (3) Determine the carbon emissions corresponding to different trading markets based on the trading electricity volume and carbon emission coefficient of different trading markets;

[0067] (4) Calculate the carbon emission costs corresponding to different trading markets based on the carbon rights prices and carbon emissions corresponding to different trading markets;

[0068] (5) The carbon emission costs corresponding to each trading market are added up to obtain the grid-connected carbon emission value, which is then sent to the management center to guide energy-saving and consumption-reduction transformation and to guide low-carbon electricity consumption on the electricity user side.

[0069] In a specific implementation of an embodiment of the present invention, the trading market includes a medium- and long-term power trading market, a spot market (a day-ahead spot market, an intraday spot market), and ancillary service markets (peak regulation, frequency regulation, standby, and black start); the method for determining the carbon rights price in different trading markets includes:

[0070] Calculate the predicted carbon emissions corresponding to the grid-connected electricity;

[0071] The carbon rights trading price is determined based on the predicted carbon emissions, the historical power generation carbon emissions and the average carbon rights trading price of the historical power generation carbon emissions.

[0072] The method for calculating the predicted carbon emission value corresponding to the grid-connected electricity volume includes:

[0073] Based on the grid-connected electricity, historical transaction information, and the proportion of future grid-connected thermal power installed capacity relative to the proportion of new energy installed capacity, with the highest rate of return as the goal, forecast the power load and the carbon market supply and demand relationship;

[0074] Based on the power load forecast, the proportion of future grid-connected thermal power installed capacity relative to the proportion of new energy installed capacity and the supply and demand relationship of the carbon market, calculate the carbon emission forecast value corresponding to the grid-connected electricity;

[0075] The calculation formula of the predicted carbon emission value is:

[0076]

[0077] Among them, T b,ty It represents the predicted carbon emission value corresponding to the grid-connected electricity in period t, i is the i-th unit of the power plant participating in the electricity transaction; z is the z-period participating in the electricity transaction; n is the total number of generators participating in the electricity transaction of the power plant;

[0078]

[0079]

[0080] Where, T b,ty is the predicted value of carbon emissions corresponding to the grid-connected electricity; Q t,y is the load side power consumption corresponding to time period t; is the correction coefficient based on the proportion of thermal power generation in the historical grid-connected electricity; β i,t is the carbon emission coefficient of n generators in the past z periods; κ is the correction coefficient of the planned thermal power installed capacity change when the future electricity is delivered; ΔP h Plan to increase the capacity of thermal power installed capacity when delivering future electricity; ΔP q The planned new energy installed capacity for future electricity delivery; ΔP z Add capacity to the total installed capacity planned for future electricity delivery;

[0081] The calculation formula of the carbon rights trading price is:

[0082]

[0083] In the formula, p t,yj is the carbon rights trading price in the j-type electricity trading market, T b,tyj is the historical carbon emissions of power generation in the j-type power trading market, p t,lj is the average carbon rights trading price of historical power generation carbon emissions in the j-type power trading market; j = 1, 2, 3, representing the medium- and long-term, spot, and ancillary service market types respectively; T b,tlj is the corresponding carbon emission value of the historical grid-connected electricity in the j-type power trading market.

[0084] The method for determining the transaction power of different transaction markets includes:

[0085] Calculate the revenue corresponding to the transaction unit electricity in different trading markets. The calculation formula is:

[0086]

[0087] In the formula, p i,dy,j is the corresponding rate of return per unit of electricity of the i-th unit participating in the trading market; p dy,j is the predicted electricity price of the j-type power trading market, where j = 1, 2, 3, representing the medium- and long-term trading market, the spot trading market, and the ancillary service trading market, respectively; Q i,e is the grid-connected power of thermal power generation, T b p t,y,j is the carbon emission cost corresponding to the amount of thermal power generation connected to the grid in the j-type power trading market;

[0088] With the goal of maximizing market revenue and the constraint that the total amount of traded electricity in different trading markets is equal to the grid-connected electricity, the traded electricity in different trading markets is determined; where e represents the grid-connected electricity; i represents the i-th unit of the power plant participating in the transaction.

[0089] The calculation formula of carbon emission is:

[0090]

[0091] Where, T i,e,c 、T i,e,x 、T i,e,f are the carbon emissions corresponding to the electricity traded by thermal power generating units in the medium- and long-term, spot, and ancillary service markets, β i,e is the grid-connected carbon emission coefficient of thermal power generating unit i, Q i,e,c , Q i,e,x , Q i,e,f The carbon emission coefficient in the embodiment of the present invention is the result of the verification of the carbon emission coefficient of the output unit by the relevant government departments.

[0092] In a specific implementation of the embodiment of the present invention, the calculation formula of the carbon emission cost corresponding to different trading markets is:

[0093]

[0094] In the formula, f i,e,c 、f i,e,x 、f i,e,f are the carbon emission costs corresponding to the thermal power transaction volume corresponding to the medium- and long-term, spot and auxiliary service power transactions; pt1 、p t2 、p t3 They are the carbon rights trading prices at the corresponding time for medium- and long-term, spot, and ancillary service electricity trading.

[0095] The calculation formula for the grid-connected carbon emission value is:

[0096] f i,e =f i,e,x +f i,e,c +f i,e,f

[0097] In the formula, f i,e It is the grid-connected carbon emission value corresponding to the electricity volume traded.

[0098] Based on the method in the embodiment of the present invention, it is possible to distinguish the entities responsible for carbon emission reduction in power generation and cost bearing, and provide support and basis for subsequent carbon emission reduction management of thermal power generation on the power generation side.

[0099] Example 2

[0100] Based on Example 1, the difference between this embodiment of the present invention and Example 1 is that the method further includes:

[0101] Calculate the output of thermal power generating units;

[0102] Calculate the power generation output based on the output of the thermal power generating set and the heat output metering data;

[0103] Based on the power generation output and the grid-connected power, the power consumption of the generator set is calculated.

[0104] In an embodiment of the present invention, the proportion of thermal power output in the total output is determined through load forecasting and renewable energy power generation forecasting, and the carbon emissions of thermal power output are determined by considering the proportion of future grid-connected thermal power installed capacity relative to the proportion of renewable energy installed capacity. The historical carbon emissions supply and demand relationship is coupled with the real-time carbon rights price in the carbon rights market to construct a market system associated with real-time carbon electricity market costs. The proportion of thermal power and the carbon emissions supply and demand relationship in the corresponding market are considered by market type, the power generation carbon rights price in the corresponding market is determined, the responsible entities for power generation carbon emissions management and cost bearing are distinguished, and support and basis are provided for subsequent carbon emission reduction management of thermal power generation on the power generation side.

[0105] In a specific implementation of the embodiment of the present invention, the method further includes:

[0106] Based on the self-consumed electricity of the generator set and the corresponding carbon emission coefficient, the self-consumed carbon emission of the generator set is calculated. The calculation formula of the self-consumed carbon emission of the generator set is:

[0107]

[0108]

[0109] In the formula, β i,t is the carbon emission coefficient of thermal power generating unit i at the tth moment; T z Q is the carbon emission of thermal power generating units for their own use; i,t is the self-consumption of thermal power generation unit i at the tth moment, where n and m are the number of grid-connected generation units and the number of grid-connected time periods in this period, respectively; P i,f is the total output power of the i-th generator set; P i,r is the heating power of the i-th generator set; P i,b is the grid-connected output power of the i-th generator set.

[0110] The calculation formula for the self-use carbon emission cost of the i-th generator set is:

[0111]

[0112]

[0113] In the formula, f i,z is the carbon emission cost of the i-th unit’s electricity generated by thermal power; The time period t during which the factory uses electricity 0 to 1 The carbon rights trading price in the time period, T z,i is the carbon emission of the i-th unit.

[0114] The method in the embodiment of the present invention is only applicable to the detailed accounting of carbon emissions of the power generation output of the thermal power generating units on the power generation side. The power generation output of the generator is calculated from the heat supply, factory power consumption and grid-connected output. The carbon emissions transferred through the transmission network clarify the carbon emission rights of electricity consumption that the power plant and the power load need to bear respectively; for the transaction cost accounting of carbon emission rights on the load side, the actual grid-connected delivery electricity is divided into: medium- and long-term, spot and auxiliary service market types according to the power market transaction type, and the carbon emissions of thermal power generation under the corresponding market type are predicted according to the proportion of thermal power in the corresponding power market transaction electricity, the future thermal power installed capacity growth rate and thermal power generation electricity; at the same time, the average transaction price of historical carbon emission rights within the power transaction time span of the medium- and long-term, spot and auxiliary service market types is used as the predicted price of future carbon rights transactions of each market type. Finally, the cost of thermal power generation carbon emission rights under each power trading market type is obtained according to the predicted carbon emissions and transaction prices under each market type.

[0115] The specific method for predicting the future carbon rights trading price is as follows:

[0116] The price of carbon emission rights for thermal power generating units (power plants) participating in medium- and long-term electricity transactions shall be based on the average price of carbon rights trading prices during the medium- and long-term trading period as the forecast price of carbon rights trading corresponding to medium- and long-term electricity transactions. The price of carbon emission rights for thermal power generating units (power plants) participating in spot transactions shall be based on the average closing price of carbon rights trading on the Shanghai Environment and Energy Exchange on the day-ahead spot transactions, intraday spot transactions, and D-2 and D-1 of the electricity spot market as the forecast price of carbon rights for the corresponding electricity spot transactions. The price of carbon emission rights for thermal power generating units (power plants) participating in the peak load regulation service market shall be based on the carbon rights trading prices of 24 trading periods with a span of two hours as the forecast trading price of carbon rights trading prices in the electricity auxiliary service market.

[0117] The specific method for calculating the generator output from heat supply, power plant self-use and grid-connected output is:

[0118] like Figure 1 As shown, first, the thermal power generating units on the power generation side determine the output capacity allocation of power generation output and heat output according to their own output capacity, mainly considering the carbon emission accounting of the power generation output of the thermal power generating units. Secondly, the grid-connected power Q generated by thermal power on the power generation side is measured by meters. i,e The grid-connected electricity in the period [0, t] includes the transaction electricity in the medium- and long-term, spot and ancillary service markets. The medium- and long-term transaction electricity Q in the grid-connected electricity is determined according to the transaction contract electricity. i,e,c , spot trading volume Q i,e,x , the amount of electricity traded in the ancillary service market Q i,e,f At the same time, the remaining unit output after deducting the grid-connected power and heating output is the power plant's own power consumption.

[0119]

[0120]

[0121] The same generator set has the same generation coefficient in the same period:

[0122] β i,t =β i,e =β i,h =β i,z

[0123] In the formula, β i,t , β i,e , β i,h , β i,z They are the carbon emission coefficient of thermal power combustion output of power plants, the grid-connected carbon emission coefficient, the heating carbon emission coefficient, and the self-used electricity carbon emission coefficient.

[0124] The carbon emissions of the corresponding electricity transaction are obtained by multiplying the electricity volume traded in each market by the corresponding carbon emission coefficient, and the carbon emissions of the corresponding thermal power plant electricity consumption on the power generation side are further calculated.

[0125]

[0126] T z,i =β i,z Q z,i

[0127] Where, T i,e,c 、T i,e,x 、T i,e,f T is the carbon emission corresponding to the transaction volume of thermal power generating units in power plants in the medium- and long-term, spot, and auxiliary service markets; z,i Carbon emissions from factory electricity consumption.

[0128] Carbon emission cost accounting methods for power trading markets of various market types:

[0129] According to the corresponding matching of the electricity volume traded in the electricity market, the corresponding carbon emission rights for power generation are purchased from the carbon market. Since the trading price of the carbon emission rights market fluctuates over time, the additional carbon emission cost required in the corresponding electricity trading market is obtained based on the obtained carbon emissions of the corresponding market and plant electricity consumption, and then the corresponding plant electricity consumption cost of the corresponding thermal power generation of the power plant is calculated. Among them, plant electricity consumption is a continuous process, and the carbon emission settlement price is a dynamic price curve.

[0130]

[0131]

[0132]

[0133] In the formula, f i,e,c 、f i,e,x 、f i,e,f are the carbon emission costs corresponding to the thermal power transaction volume corresponding to the medium- and long-term, spot and auxiliary service power transactions; p t1 、p t2 、p t3 are the real-time transaction prices of carbon rights at the corresponding time of medium- and long-term, spot and auxiliary service power transactions; f i,z Carbon emission fees for electricity generated by thermal power plants; The time period t during which the factory uses electricity 0 to 1 The carbon rights trading price for a certain period of time.

[0134] Finally, by calculating the carbon emission cost of thermal power transactions corresponding to medium- and long-term, spot, and auxiliary service power transactions, the carbon emission cost of electricity transferred from the power generation side to the user side should be shared by the power users on the load side. Similarly, the carbon emission cost of electricity used by thermal power plants needs to be borne by themselves. Power plants need to optimize their own power generation and carbon emissions, and reduce the additional cost of carbon emission rights corresponding to their own power generation.

[0135] f i,e =f i,e,x +f i,e,c +f i,e,f

[0136] In the formula, f i,e It is the carbon emission cost corresponding to the electricity volume traded.

[0137] By refining the proportion of electricity trading, heat supply and power plant electricity consumption in thermal power processing, determining the coupling between the corresponding output carbon emissions and the real-time carbon rights price in the carbon rights market, building a market system with real-time carbon electricity market cost linkage, and distinguishing the responsible entities for power generation carbon emissions management and cost bearing, this will provide support and basis for subsequent carbon emission reduction management of thermal power generation on the power generation side.

[0138] Example 3

[0139] Based on the same inventive concept as that of Example 1, a device for determining grid-connected carbon emissions and value of a thermal power generating set is provided in an embodiment of the present invention, comprising:

[0140] An acquisition module is used to acquire grid-connected power;

[0141] A first determination module is used to determine the transaction power and carbon right price of different trading markets based on the grid-connected power with the goal of maximizing market revenue;

[0142] The second determination module is used to determine the carbon emissions corresponding to different trading markets according to the transaction electricity and carbon emission coefficients of different trading markets;

[0143] The first calculation module is used to calculate the carbon emission costs corresponding to different trading markets according to the carbon rights prices and carbon emissions corresponding to different trading markets;

[0144] The second calculation module is used to add up the carbon emission costs corresponding to each trading market to obtain the grid-connected carbon emission value, and send it to the management center to guide energy-saving and consumption-reducing transformation, as well as to guide low-carbon electricity consumption on the electricity user side.

[0145] Example 4

[0146] Based on the same inventive concept as that of Example 1, a system for determining grid-connected carbon emissions and value of a thermal power generating set is provided in an embodiment of the present invention, including a storage medium and a processor;

[0147] The storage medium is used to store instructions;

[0148] The processor is used to operate according to the instructions to execute the method according to any one of the methods described in embodiment 1.

[0149] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for determining the carbon emissions and value of a thermal power generating unit connected to the grid, characterized in that: include: Obtain grid-connected electricity; Based on the grid-connected electricity, with the goal of maximizing market revenue, determine the transaction electricity and carbon rights prices in different trading markets; According to the transaction volume and carbon emission coefficient of different trading markets, the corresponding carbon emissions of different trading markets are determined; Calculate the carbon emission costs corresponding to different trading markets based on the carbon rights prices and carbon emissions corresponding to different trading markets; Add up the carbon emission costs corresponding to each trading market to obtain the grid-connected carbon emission value and send it to the management center; The methods for determining the carbon rights price in different trading markets include: Calculate the predicted carbon emissions corresponding to the grid-connected electricity; Determine the carbon rights trading price based on the predicted carbon emissions, the historical power generation carbon emissions and the average carbon rights trading price of the historical power generation carbon emissions; The calculation formula of the predicted carbon emission value is: Among them, T b,ty represents the predicted carbon emission value corresponding to the grid-connected electricity in period t, Q t,y is the load-side power consumption corresponding to time period t, i is the i-th unit of the power plant participating in the power transaction; z is the z-th time period participating in the transaction; n is the total number of generators participating in the power transaction of the power plant; β i,t is the carbon emission coefficient of n generating units in the past z periods; It is a correction factor based on the proportion of thermal power generation in the historical grid-connected electricity; In the formula, Q h The amount of thermal power generated and connected to the grid; Q t is the total grid-connected electricity; m is the sample size set of historical values; κ is the correction coefficient for the change in the planned thermal power installed capacity when the future electricity is delivered; ΔP h Plan to increase the capacity of thermal power installed capacity when delivering future electricity; ΔP q The planned new energy installed capacity for future electricity delivery; ΔP z Add capacity to the total installed capacity planned for future electricity delivery; The calculation formula of carbon emission is: Where, T i,e,c , T i,e,x , T i,e,f are the carbon emissions corresponding to the electricity traded by thermal power generating units in the medium- and long-term, spot, and ancillary service markets, β i,e is the grid-connected carbon emission coefficient of thermal power generating unit i, Q i,e,c , Q i,e,x , Q i,e,f They are respectively the trading electricity volumes of thermal power generating units participating in the medium- and long-term, spot, and ancillary service markets.

2. A method for determining the grid-connected carbon emissions and value of a thermal power generating set according to claim 1, characterized in that: The calculation method of the predicted carbon emission value corresponding to the grid-connected electricity volume includes: Based on the grid-connected electricity, historical transaction information, and the proportion of future grid-connected thermal power installed capacity relative to the proportion of new energy installed capacity, with the highest rate of return as the goal, forecast the power load and the carbon market supply and demand relationship; Based on the power load forecast, the future proportion of grid-connected thermal power installed capacity relative to the proportion of new energy installed capacity and the supply and demand relationship in the carbon market, the predicted carbon emissions corresponding to the grid-connected electricity volume is calculated.

3. A method for determining the grid-connected carbon emissions and value of a thermal power generating set according to claim 1, characterized in that: The calculation formula of the carbon rights trading price is: In the formula, p t,yj is the carbon rights trading price in the j-type electricity trading market, T b,tyj is the historical carbon emissions of power generation in the j-type power trading market, p t,lj is the average carbon rights trading price of historical power generation carbon emissions in the j-type power trading market; j = 1, 2, 3, representing the medium- and long-term, spot, and ancillary service market types respectively; T b,tlj is the corresponding carbon emission value of the historical grid-connected electricity in the j-type power trading market.

4. A method for determining the grid-connected carbon emissions and value of a thermal power generating set according to claim 1, characterized in that: Methods for determining the transaction volume of different trading markets include: Calculate the revenue corresponding to the transaction unit electricity in different trading markets. The calculation formula is: In the formula, p i,dy,j is the corresponding rate of return per unit of electricity of the i-th unit participating in the trading market; p dy,j is the predicted electricity price of the j-type power trading market, where j = 1, 2, 3, representing the medium- and long-term trading market, the spot trading market, and the ancillary service trading market, respectively; Q i,e is the grid-connected power of thermal power generation, T b p t,y,j is the carbon emission cost corresponding to the amount of thermal power generation connected to the grid in the j-type power trading market; With the goal of maximizing market revenue and the constraint that the total amount of traded electricity in different trading markets is equal to the grid-connected electricity, the trading electricity in different trading markets is determined.

5. A method for determining the grid-connected carbon emissions and value of a thermal power generating set according to claim 1, characterized in that: The method for determining the grid-connected carbon emissions and value of thermal power generating units also includes: Calculate the output of thermal power generating units; Calculating the power generation output based on the output of the thermal power generating set and the heat output metering data; Based on the power generation output and the grid-connected power, the power consumption of the generator set is calculated.

6. A method for determining the grid-connected carbon emissions and value of a thermal power generating set according to claim 5, characterized in that: The method for determining the grid-connected carbon emissions and value of thermal power generating units also includes: The self-use carbon emission of the generator set is calculated based on the self-use electricity of the generator set and the corresponding carbon emission coefficient.

7. A method for determining the grid-connected carbon emissions and value of a thermal power generating set according to claim 6, characterized in that: The calculation formula for the self-use carbon emissions of the generator set is: Where, T z β is the carbon emission of thermal power generating units for their own use; i,t is the carbon emission coefficient of thermal power generating unit i at the tth moment; Q i,t is the self-consumption of thermal power generation unit i at the tth moment, n and m are the number of grid-connected generation units and the number of grid-connected time periods, respectively; P i,f is the total output power of the i-th generator set; P i,r is the heating power of the i-th generator set; P i,b is the grid-connected output power of the i-th generator set.

8. A device for determining the carbon emissions and value of a thermal power generating unit connected to the grid, characterized in that: include: An acquisition module is used to acquire grid-connected power; A first determination module is used to determine the transaction power and carbon right price of different trading markets based on the grid-connected power with the goal of maximizing market revenue; The second determination module is used to determine the carbon emissions corresponding to different trading markets according to the transaction electricity and carbon emission coefficients of different trading markets; The first calculation module is used to calculate the carbon emission costs corresponding to different trading markets according to the carbon rights prices and carbon emissions corresponding to different trading markets; The second calculation module is used to sum up the carbon emission costs corresponding to different trading markets, obtain the grid-connected carbon emission value, and send it to the management center to guide energy-saving and consumption-reducing transformation, as well as guide low-carbon electricity consumption on the electricity user side; The methods for determining the carbon rights price in different trading markets include: Calculate the predicted carbon emissions corresponding to the grid-connected electricity; Determine the carbon rights trading price based on the predicted carbon emissions, the historical power generation carbon emissions and the average carbon rights trading price of the historical power generation carbon emissions; The calculation formula of the predicted carbon emission value is: Among them, T b,ty represents the predicted carbon emission value corresponding to the grid-connected electricity in period t, Q t,y is the load-side power consumption corresponding to time period t, i is the i-th unit of the power plant participating in the power transaction; z is the z-th time period participating in the transaction; n is the total number of generators participating in the power transaction of the power plant; β i,t is the carbon emission coefficient of n generating units in the past z periods; It is a correction factor based on the proportion of thermal power generation in the historical grid-connected electricity; In the formula, Q h The amount of thermal power generated and connected to the grid; Q t is the total grid-connected electricity; m is the sample size set of historical values; κ is the correction coefficient for the change in the planned thermal power installed capacity when the future electricity is delivered; ΔP h Plan to increase the capacity of thermal power installed capacity when delivering future electricity; ΔP q The planned new energy installed capacity for future electricity delivery; ΔP z Add capacity to the total installed capacity planned for future electricity delivery; The calculation formula of carbon emission is: Where, T i,e,c , T i,e,x , T i,e,f are the carbon emissions corresponding to the electricity traded by thermal power generating units in the medium- and long-term, spot, and ancillary service markets, β i,e is the grid-connected carbon emission coefficient of thermal power generating unit i, Q i,e,c , Q i,e,x , Q i,e,f They are respectively the trading electricity volumes of thermal power generating units participating in the medium- and long-term, spot, and ancillary service markets.

9. A system for determining the carbon emissions and value of a thermal power generating unit connected to the grid, characterized in that: including storage media and processors; The storage medium is used to store instructions; The processor is configured to operate according to the instructions to execute the method according to any one of claims 1 to 7.

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