Method, device and equipment for promoting carbon reduction medium and long term transactions through double accounts

Abstract

The invention relates to a method, a device and equipment for promoting carbon reduction medium and long term transactions by using double accounts, which can set a transaction account and a consumption account for each user in a power transaction, record production information and transaction information of green power by using the transaction account, and record consumption information of the green power by using the consumption account. Executing a green electricity transaction according to a preset electricity transaction type, and recording transaction information in a transaction account; according to the production information and the transaction information recorded in the transaction account, green electricity transaction settlement is carried out on the user with the monthly as the cycle, and the green attribute and the settlement electric charge of the user are obtained; and according to the transaction information and the consumption information of the green power, calculating the power indirect carbon emission of the user. According to the technical scheme disclosed by the invention, a double-account mechanism can clearly record and manage the transaction and consumption process of the green electricity, and ensures that the green electricity can be circulated in the market and the environmental value of the green electricity is realized; and meanwhile, effective fusion of green power transaction and carbon emission management is ensured.

Description

Technical Field

[0001] The present invention relates to the field of green electricity trading technology, and in particular to a method, device and equipment for promoting medium- and long-term carbon reduction transactions using dual accounts. Background Art

[0002] With growing global attention to sustainable development and a low-carbon economy, green electricity trading mechanisms for UHV and renewable energy have become a crucial tool for promoting the development of green electricity. The core purpose of this mechanism is to promote the production and consumption of green electricity through market-based means, while effectively controlling and reducing carbon emissions. While the existing electricity market system has played a role in promoting electricity production and consumption, it often struggles to achieve sufficient competitiveness in the market due to its failure to fully consider the environmental value of green electricity. In traditional electricity markets, the environmental value of green electricity is often difficult to accurately assess and effectively quantify, resulting in its trading price in the market failing to fully reflect its environmental contribution.

[0003] At the same time, the monitoring and management of carbon emissions have also become an important part of realizing the green electricity trading mechanism. Although existing carbon emission management measures have been applied to a certain extent, there is still a lack of effective mechanisms to closely integrate green electricity with carbon emission management, resulting in a disconnect between green electricity consumption and carbon emission offsetting. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method, device and equipment for promoting medium- and long-term carbon reduction transactions through dual accounts, so as to solve the problem in the prior art that the environmental value of green electricity is usually not accurately assessed and there is a disconnect between the consumption of green electricity and carbon emission offsets.

[0005] According to a first aspect of an embodiment of the present invention, a method for promoting medium- and long-term carbon reduction transactions using dual accounts is provided, comprising:

[0006] For each user in the power transaction, a trading account and a consumption account are set up respectively. The trading account is used to record the production and transaction information of green power, and the consumption account is used to record the consumption information of green power.

[0007] Execute green power transactions according to the preset power transaction type and record transaction information in the transaction account;

[0008] Based on the production information and transaction information recorded in the transaction account, the user's green electricity transaction settlement is carried out on a monthly basis to obtain the user's green attributes and settlement electricity charges;

[0009] Based on the transaction and consumption information of green electricity, the user's indirect carbon emissions from electricity are calculated.

[0010] Preferably, the preset power transaction types include: traditional transactions, distributed resource subject transactions and green attribute transactions;

[0011] For traditional transactions, the lower limit of the quotation is set based on the coal-fired benchmark electricity price and the periodic transaction clearing electricity price. The formula is as follows:

[0012] PR M1 =PR coal +(PR a -PR coal )α

[0013] Among them, PR M1 The lower limit of the quote for traditional transactions; PR a is the clearing electricity price for the current period; PR coal is the benchmark coal-fired electricity price; α is the lower limit coefficient of the traditional transaction quotation;

[0014] For distributed resource transactions, the lower limit of the quotation is set according to the benchmark coal-fired electricity price. The formula is as follows:

[0015] PR M2 =PR coal β

[0016] Among them, PR M2 is the lower limit of the quotation for the distributed resource subject transaction; β is the quotation adjustment coefficient for the distributed resource subject transaction;

[0017] For green attribute transactions, the lower limit of green attribute quotation is set according to the periodic transaction clearing electricity price and the coal-fired benchmark electricity price. The formula is as follows:

[0018] PR M3 =(PR a -PR coal )α

[0019] Among them, PR M3 The lower limit of the quotation for green properties.

[0020] Preferably, when executing green power trading according to the preset power trading type, the method further includes:

[0021] If the power generation entity still fails to form a transaction after going through traditional transactions and distributed resource entity transactions, the power grid company will conduct guaranteed procurement. The guaranteed procurement price is set according to the lower limit of the quotation of the distributed resource entity transaction, the coal-fired benchmark electricity price and the periodic transaction clearing electricity price. The formula is as follows:

[0022] PR M =PR M2 +(PR a -PR coal )γ

[0023] Among them, PR M is the guaranteed purchase price; γ is the purchase price adjustment coefficient.

[0024] Preferably, green electricity transactions are settled for users on a monthly basis to obtain the user's green attributes and electricity charges, including:

[0025] Based on the transaction information of traditional transactions recorded in the transaction account, the green attribute obtained by the user in the traditional transaction is calculated using the following formula:

[0026]

[0027] Among them, QU i,1 is the total amount of green attributes obtained by user i in traditional transaction settlement; m is the number of contracts signed by user i in traditional transactions; QU pi,j,1 is the settlement electricity of user i in contract j; QU gc,j,1 is the grid-connected power of the corresponding unit c;

[0028] Based on the transaction information of traditional transactions and the green attributes obtained by users, the settlement electricity fee of users in traditional transactions is calculated using the following formula:

[0029]

[0030] Among them, c i,1 The electricity fee settled by user i in traditional transactions; PR j,1 is the price of traditional trading contract j; QU ci,j,1 The green attribute corresponding to the green electricity amount agreed by user i in contract j; QU i,j,1 is the green attribute actually obtained by user i in contract j in traditional transactions;

[0031] According to the transaction information of the distributed resource subject transaction recorded in the transaction account, the settlement electricity fee of the user in the distributed resource subject transaction is calculated by the following formula:

[0032]

[0033] Among them, c i,2 is the electricity fee settled by user i in the distributed resource subject transaction; n is the number of contracts signed in the distributed resource subject transaction; QU pi,j,2 PR is the settlement amount of user i in contract j in the distributed resource subject transaction; j,2 The settlement price of contract j in the distributed resource principal transaction of user i;

[0034] The green attribute of the power generation entity k is calculated according to the following formula:

[0035]

[0036] Among them, QU gk,j,2 It is the green attribute obtained by power generation entity k in distributed resource entity transaction contract j.

[0037] Preferably, the user's indirect carbon emissions from electricity are calculated based on the green electricity transaction information and consumption information. The calculation of the user's indirect carbon emissions from electricity includes:

[0038] Obtain the user's total net purchased electricity, and calculate the user's indirect carbon emissions from electricity based on the net purchased total electricity, net purchased green electricity, and the existing regional power grid carbon emission factor. The formula is as follows:

[0039] En mj =(En j -En gj )·En F

[0040] Among them, En mj Indirect carbon emissions from electricity, En j En is the total net electricity purchased by entity j; gj En is the net green electricity purchased by entity j; F is the carbon emission factor.

[0041] Preferably, the user's indirect carbon emissions from electricity are calculated based on the green electricity transaction information and consumption information. The calculation of the user's indirect carbon emissions from electricity includes:

[0042] Obtain the total carbon emissions, total electricity consumption, and green power consumption of regional power grid i, and calculate the revised carbon emission factor using the following formula: :

[0043]

[0044] Among them, En mi It can represent the total carbon emissions of regional power grid i; ∑En i is the total power consumption of regional power grid i; ∑En gi is the green electricity consumption of regional grid i;

[0045] Based on the revised carbon emission factor, the user's indirect carbon emissions from electricity are calculated using the following formula:

[0046]

[0047] in, is the revised emission factor for year y; En mi,j,y En is the indirect carbon emissions from electricity generated by entity j in regional power grid i in year y;i,j,y is the total electricity consumption of the user entity in year y; is the green electricity consumption of the user entity in year y.

[0048] Preferably, the dual-account method for promoting medium- and long-term carbon reduction transactions further includes:

[0049] The indirect carbon emissions per unit output value of electricity for entity j in the regional power grid i in year y are calculated using the following formula:

[0050]

[0051] Among them, En mi,j,y is the indirect carbon emissions per unit output value of electricity of user entity j in the regional power grid i in year y, The electricity consumption of the user's main unit output value minus the green electricity consumption; is the revised emission factor for year y; η n,i is the policy control coefficient; Fr i,j,y The electricity consumption per unit output value in the industry in which the subject is located in year y; is the total electricity consumption of the industry in year y-1; is the non-green electricity consumption corresponding to year y-1.

[0052] Preferably, the dual-account method for promoting medium- and long-term carbon reduction transactions further includes:

[0053] The combined marginal carbon dioxide emission factor is calculated based on the marginal emission factor of electricity and the marginal emission factor of capacity;

[0054] Based on the combined marginal carbon dioxide emission factor and the green electricity consumption in the green electricity consumption information, the equivalent emission reduction of users consuming green electricity is calculated.

[0055] According to a second aspect of an embodiment of the present invention, there is provided a device for promoting medium- and long-term carbon reduction transactions using dual accounts, comprising:

[0056] A transaction account management module is used to set up a transaction account and a consumption account for each user in the power transaction, use the transaction account to record the production and transaction information of green power, and use the consumption account to record the consumption information of green power;

[0057] A green power transaction module, configured to execute green power transactions according to a preset power transaction type and record transaction information in the transaction account;

[0058] A green electricity transaction settlement module is used to settle green electricity transactions for users on a monthly basis based on the production information and transaction information recorded in the transaction account, and to determine the user's green attributes and settlement electricity charges;

[0059] The carbon emission accounting module is used to calculate the user's indirect carbon emissions from electricity based on the trading and consumption information of green electricity.

[0060] According to a third aspect of an embodiment of the present invention, a device for promoting medium- and long-term carbon reduction transactions using dual accounts is provided, comprising:

[0061] A main controller, and a memory connected to the main controller;

[0062] a memory in which program instructions are stored;

[0063] The main controller is used to execute program instructions stored in the memory and perform any of the above methods.

[0064] The technical solutions provided by the embodiments of the present invention may have the following beneficial effects:

[0065] It is understandable that the technical solution illustrated in the present invention can set up a trading account and a consumption account for each user in the electricity transaction. The trading account is used to record the production and transaction information of green electricity, and the consumption account is used to record the consumption information of green electricity. According to the preset electricity transaction type, green electricity transactions are executed and the transaction information is recorded in the trading account. Based on the production and transaction information recorded in the trading account, the user's green electricity transactions are settled on a monthly basis to obtain the user's green attributes and settlement electricity charges. Based on the green electricity transaction information and consumption information, the user's indirect carbon emissions from electricity are calculated. The technical solution illustrated in the present invention uses a dual-account mechanism to clearly record and manage the transaction and consumption process of green electricity, ensuring that green electricity can circulate in the market and realize its environmental value, effectively avoiding resource waste and consumption difficulties in green electricity transactions. At the same time, it ensures the effective integration of green electricity trading and carbon emission management.

[0066] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0068] Figure 1 It is a schematic diagram of the steps of a method for promoting medium- and long-term carbon reduction transactions using dual accounts according to an exemplary embodiment. DETAILED DESCRIPTION

[0069] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent like or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0070] With the growing severity of global climate change, carbon emission control and the utilization of renewable energy have become key priorities in global energy policy. Green electricity, derived from renewable energy sources such as wind and solar power, offers significant emission reduction advantages and environmental benefits. To promote the development of renewable energy, various countries have successively introduced policies to support green electricity trading and advance the transition to a green, low-carbon economy.

[0071] While green electricity trading mechanisms already exist in the market, numerous issues remain regarding carbon emissions accounting, green electricity consumption, and matching power supply and demand. Current trading mechanisms are plagued by issues such as unclear accounting, difficulty absorbing green electricity, and inadequate carbon emissions monitoring. These challenges urgently require innovative mechanisms to optimize green electricity trading and carbon emissions management.

[0072] In one embodiment, Figure 1 This is a schematic diagram of a method for promoting medium- and long-term carbon reduction transactions using dual accounts according to an exemplary embodiment. Figure 1 , providing a dual-account method to promote medium- and long-term carbon reduction transactions, including:

[0073] Step S11: Set up a transaction account and a consumption account for each user in the power transaction, use the transaction account to record the production information and transaction information of green power, and use the consumption account to record the consumption information of green power.

[0074] In practice, this embodiment introduces a dual-account management mechanism to separately encapsulate green attributes and consumption certificates. This dual-account management mechanism establishes a trading account and a consumption account for each user in green electricity trading. The trading account primarily records transaction information regarding funds, green attributes, and electricity, and is updated during green electricity trading. The consumption account contains the user's consumption certificate, serving as authentication for consumption participation.

[0075] In the trading account, green electricity trading behavior is clearly recorded to ensure the transparency of the transaction; in the consumption account, electricity consumers generate corresponding carbon emission reduction certificates or vouchers based on the actual amount of green electricity consumed.

[0076] Step S12: Execute green power transaction according to the preset power transaction type, and record the transaction information in the transaction account.

[0077] Step S13: Based on the production information and transaction information recorded in the transaction account, the green electricity transaction settlement is performed on the user on a monthly basis to obtain the user's green attributes and settlement electricity charges.

[0078] Step S14: Calculate the user's indirect carbon emissions from electricity based on the green electricity transaction information and consumption information.

[0079] It can be understood that the technical solution shown in the present invention, the dual account mechanism can clearly record and manage the transaction and consumption process of green electricity, ensure that green electricity can circulate in the market and realize its environmental value, effectively avoid resource waste and consumption difficulties in green electricity trading; at the same time, ensure the effective integration of green electricity trading and carbon emission management.

[0080] It should be noted that the preset power transaction types in step S12 include: traditional transaction (type a transaction), distributed resource subject transaction (type b transaction) and green attribute transaction (type c transaction). These three types of transactions are used to meet the green power transaction needs.

[0081] For traditional transactions, transactions are conducted according to traditional green electricity trading rules. The transaction price includes the price of electricity and the price of green attributes. The lower limit of the quotation is set based on the coal-fired benchmark electricity price and the periodic transaction clearing electricity price. The formula is as follows:

[0082] PR M1 =PR coal +(PR a -PR coal )α

[0083] Among them, PR M1 The lower limit of the quote for traditional transactions; PR a is the clearing electricity price for the current period; PR coal is the benchmark coal-fired electricity price; α is the lower limit coefficient of the quotation for traditional transactions.

[0084] For distributed resource transactions, the lower limit of the quotation is set according to the benchmark coal-fired electricity price. The formula is as follows:

[0085] PR M2 =PR coal β

[0086] Among them, PR M2 is the lower limit of the quotation for the distributed resource subject transaction; β is the quotation adjustment coefficient for the distributed resource subject transaction.

[0087] It should be noted that if a power generation entity still fails to form a transaction after going through traditional transactions and distributed resource entity transactions, the power grid company will conduct guaranteed procurement and set the guaranteed procurement price based on the lower limit of the quotation of the distributed resource entity transaction, the coal-fired benchmark electricity price and the periodic transaction clearing electricity price. The formula is as follows:

[0088] PR M =PR M2 +(PR a -PR coal )γ

[0089] Among them, PR M is the guaranteed purchase price; γ is the purchase price adjustment coefficient.

[0090] For green attribute transactions, the lower limit of green attribute quotation PR M3 Similar to the environmental value part in Class A transactions, the lower limit of the green attribute quotation is set based on the periodic transaction clearing electricity price and the coal-fired benchmark electricity price. The formula is as follows:

[0091] PR M3 =(PR a -PR coal )α

[0092] Among them, PR M3 The lower limit of the quotation for green properties.

[0093] It should be noted that in step S13, green electricity trading settlement is performed, based on current green electricity trading settlement principles, on a monthly basis to settle the electricity and green attributes under the dual-account mechanism. Green electricity is prioritized during the settlement process, and the total green electricity settlement amount is calculated based on the minimum of the user's total monthly settlement amount and the remaining contracted electricity for Class A and Class B. The metered electricity is then broken down into each contract according to the contract.

[0094] Green electricity transactions are settled monthly for users to obtain their green attributes and electricity charges, including:

[0095] In a Class A transaction, the green attribute actually settled for each contract is the minimum value between the power generation entity's grid-connected electricity and the user's settled electricity. Therefore, based on the transaction information of traditional transactions recorded in the transaction account, the green attribute obtained by the user in the traditional transaction is calculated using the following formula:

[0096]

[0097] Among them, QU i,1 is the total amount of green attributes obtained by user i in traditional transaction settlement; m is the number of contracts signed by user i in traditional transactions; QU pi,j,1 is the settlement electricity of user i in contract j; QUgc,j,1 is the grid-connected power of the corresponding unit c.

[0098] Therefore, the user's electricity fee calculation consists of the settled electricity fee minus the deviation of the green attribute. Based on the transaction information of the traditional transaction and the green attribute obtained by the user, the user's settled electricity fee in the traditional transaction is calculated by the following formula:

[0099]

[0100] Among them, c i,1 The electricity fee settled by user i in traditional transactions; PR j,1 is the price of traditional trading contract j; QU ci,j,1 The green attribute corresponding to the green electricity amount agreed by user i in contract j; QU i,j,1 It is the green attribute actually obtained by user i in contract j in traditional transactions.

[0101] In type B transactions, the user's electricity fee is obtained by accumulating the electricity fees of all contracts. Therefore, based on the transaction information of the distributed resource subject transaction recorded in the transaction account, the user's electricity fee in the distributed resource subject transaction is calculated by the following formula:

[0102]

[0103] Among them, c i,2 is the electricity fee settled by user i in the distributed resource subject transaction; n is the number of contracts signed in the distributed resource subject transaction; QU pi,j,2 PR is the settlement amount of user i in contract j in the distributed resource subject transaction; j,2 It is the settlement price of contract j in the distributed resource subject transaction of user i.

[0104] The green attribute of the power generation entity k is calculated according to the following formula:

[0105]

[0106] Among them, QU gk,j,2 It is the green attribute obtained by power generation entity k in distributed resource entity transaction contract j.

[0107] For Class C transactions, since Class C transactions are real-time exchanges of green attributes and funds and do not involve deviations, they are settled directly in accordance with the contract agreement.

[0108] It should be noted that in step S14, the user's indirect carbon emissions from electricity are calculated based on the trading information and consumption information of green electricity. The user's indirect carbon emissions from electricity are calculated, including the following methods: directly deducting the carbon emissions corresponding to green electricity, deducting carbon emissions based on revised emission factors, and indirectly deducting carbon emissions by calculating CCER.

[0109] Directly deducting carbon emissions from green electricity means, in some embodiments, that if an enterprise consumes green electricity, the corresponding electricity consumption can be used to offset carbon emissions, for example, by directly treating its emissions as zero. Therefore, consideration could be given to using green electricity trading contracts to clearly define the green electricity consumption of market entities. When calculating indirect carbon emissions from electricity, the net purchase of green electricity could be directly deducted from the net purchase of electricity by the contracting entity, and its indirect carbon emissions from electricity could be calculated using the existing regional power grid carbon emission factor.

[0110] Obtain the user's total net purchased electricity, and calculate the user's indirect carbon emissions from electricity based on the net purchased total electricity, net purchased green electricity, and the existing regional power grid carbon emission factor. The formula is as follows:

[0111] En mj =(En j -En gj )·En F

[0112] Among them, En mj Indirect carbon emissions from electricity, En j En is the total net electricity purchased by entity j; gj En is the net green electricity purchased by entity j; F is the carbon emission factor, and its value can be selected as the regional carbon emission factor En according to the emission factor system in the current carbon emission accounting. Fi 、National carbon emission factor En F-grid wait.

[0113] By directly deducting the amount of green electricity consumption from the total electricity consumption, the existing emission factor system will not be adjusted for the time being. The overall implementation is relatively convenient and easy to get started.

[0114] Deducting carbon emissions based on the revised emission factor means revising the carbon emissions for all electricity in the original emission factor calculation formula to the carbon emissions for the remaining electricity after deducting green electricity, and calculating the revised emission factor based on the newly obtained carbon emissions and the electricity scale after deducting green electricity. This emission factor is used to calculate the indirect carbon emissions from electricity generated by the remaining electricity after deducting green electricity consumption by enterprises and other individuals.

[0115] Obtain the total carbon emissions, total electricity consumption, and green power consumption of regional power grid i, and calculate the revised carbon emission factor using the following formula:

[0116]

[0117] Among them, En mi It can represent the total carbon emissions of regional power grid i; ∑En i is the total power consumption of regional power grid i; ∑En gi is the green electricity consumption of regional grid i.

[0118] After the revision of the emission factors is completed, the scale of indirect carbon emissions is calculated based on the updated emission factors. It can be considered to be based on the power trading contract, using the green power trading contract (or green certificate) as a green power consumption deduction certificate, clarifying the green power consumption of the market entity, and deducting the corresponding green power consumption from the total power consumption. Based on the revised carbon emission factors, the user's indirect carbon emissions from electricity are calculated using the following formula:

[0119]

[0120] in, is the revised emission factor for year y; En mi,j,y En is the indirect carbon emissions from electricity generated by entity j in regional power grid i in year y; i,j,y is the total electricity consumption of the user entity in year y; is the green electricity consumption of the user entity in year y.

[0121] It should be noted that, in another embodiment, taking the industry benchmark value method as an example, the indirect carbon emissions benchmark for electricity can be determined based on the average proportion of electricity consumption of the controlled and emission-emission industries in the previous year, excluding green electricity consumption, to further determine the pre-allocation scale of the benchmark quota. The indirect carbon emissions per unit output value of entity j in year y within the scope of regional power grid i are calculated using the following formula:

[0122]

[0123] Among them, En mi,j,y is the indirect carbon emissions per unit output value of electricity of user entity j in the regional power grid i in year y, The electricity consumption of the user's main unit output value minus the green electricity consumption; is the revised emission factor for year y; η n,i Fr is the policy control coefficient, which is used to reflect the degree of tightness of the quota issued; i,j,y The electricity consumption per unit output value in the industry in which the subject is located in year y; is the total electricity consumption of the industry in year y-1; is the non-green electricity consumption corresponding to year y-1.

[0124] Indirect carbon emission reduction through calculation of CCER refers to determining the emission reduction contribution of each megawatt-hour of clean electricity based on the "China Regional Grid Baseline Emission Factor of Emission Reduction Project". First, according to the renewable energy power generation grid connection project methodology, the green electricity consumption is regarded as equivalent to the renewable energy power generation, and the emission reduction contribution of each megawatt-hour of green electricity is obtained by calculating the combined marginal carbon dioxide emission factor; then, the total amount of CCER corresponding to the consumption of green electricity is calculated based on the aforementioned emission factor, and then deducted from the total emissions. Specifically:

[0125] The combined marginal carbon dioxide emission factor is calculated based on the marginal emission factor of electricity and the marginal emission factor of capacity; the equivalent emission reduction of users consuming green electricity is calculated based on the combined marginal carbon dioxide emission factor and the green electricity consumption in the green electricity consumption information.

[0126] The formula is as follows:

[0127] En CCER,y =En F-CM,y ·Pe Gy

[0128] En F-CM,y =En F-BM,y w BM,y +En F-OM,y w OM,y

[0129] w BM,y +w OM,y =1

[0130] Among them, En CCER,y represents the equivalent emission reduction of green electricity consumed by market entities in year y, tCO2; Pe Gy is the green electricity consumption, MW·h; En F-CM,y is the combined marginal carbon dioxide emission factor, which is equal to the marginal emission factor of electricity, En F-OM,y and capacity marginal emission factor En F-BM,y The weighted average of tCO2 / (MW·h); OM,y and w BM,y are the marginal emission factor weights of electricity and capacity respectively.

[0131] In another embodiment, a linkage mechanism among green certificates, electricity consumption and CO2 emissions is also included.

[0132] Under the premise of allowing green certificates to offset carbon emissions, since green certificates are equivalent to green electricity consumption, the amount of green certificates allowed to be offset should not exceed the total amount of indirect carbon emissions from electricity, which can be expressed as follows:

[0133] ∑(Q res +Q rec )≤Q ω

[0134] Among them, Q rec and Q res are the emissions that can be deducted from carbon accounting using green certificates and renewable energy (electricity) consumption; Q ω is the total amount of indirect greenhouse gas emissions.

[0135] In another embodiment, a linkage mechanism between green electricity certificates and CCERs is also included.

[0136] For existing new energy power generation CCER projects, considering the connection with the current carbon emission accounting system and the "flooding effect" on carbon market prices, it is not appropriate to fully open CCER for emission offsets in the carbon market. The scale of CCER offsets can be limited to no more than the upper limit of indirect carbon emissions from electricity. This can be expressed as follows:

[0137] Q CCER =min{Q ω ,Q σ ·ε}

[0138] Among them, Q CCER Q is the total amount of carbon emissions that can be offset by CCER. ω is the total amount of indirect greenhouse gas emissions; Q σ is the total amount of free allowances issued in the carbon market; ε is the upper limit of the deduction allowed, which can be between 5% and 10% and is determined based on the actual market conditions.

[0139] It is understandable that the technical solution shown in the present invention has the function of green electricity certification and traceability: the dual account mechanism provided by the present invention provides certification and traceability capabilities for each unit of green electricity, ensuring the authenticity and transparency of green electricity transactions. The production, transaction, consumption and carbon emission reduction of each unit of green electricity can be traced, avoiding false transactions and abuse in green electricity transactions. At the same time, the carbon emission reduction is automatically calculated and recorded according to the consumption situation of the electricity consumer, and connected with the national or regional carbon emission control policy to provide carbon emission reduction support for electricity consumers. By real-time accounting and monitoring of carbon emission reductions, carbon emissions are reduced, and at the same time, opportunities for carbon trading and emission reduction benefits are provided to electricity consumers. Taking into account the dispatchability and reliability of new energy, combined with the output limitations of traditional non-renewable energy units, the reliability of green electricity transactions is enhanced.

[0140] According to a second aspect of an embodiment of the present invention, there is provided a device for promoting medium- and long-term carbon reduction transactions using dual accounts, comprising:

[0141] A transaction account management module is used to set up a transaction account and a consumption account for each user in the power transaction, use the transaction account to record the production and transaction information of green power, and use the consumption account to record the consumption information of green power;

[0142] A green power transaction module, configured to execute green power transactions according to a preset power transaction type and record transaction information in the transaction account;

[0143] A green electricity transaction settlement module is used to settle green electricity transactions for users on a monthly basis based on the production information and transaction information recorded in the transaction account, and to determine the user's green attributes and settlement electricity charges;

[0144] The carbon emission accounting module is used to calculate the user's indirect carbon emissions from electricity based on the trading and consumption information of green electricity.

[0145] According to a third aspect of an embodiment of the present invention, a device for promoting medium- and long-term carbon reduction transactions using dual accounts is provided, comprising:

[0146] A main controller, and a memory connected to the main controller;

[0147] a memory in which program instructions are stored;

[0148] The main controller is used to execute program instructions stored in the memory and perform any of the above methods.

[0149] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0150] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is at least two.

[0151] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0152] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0153] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0154] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing module, or each unit may exist physically separately, or two or more units may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or in the form of software functional modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.

[0155] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0156] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0157] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A dual-account method for promoting medium- and long-term carbon reduction transactions, characterized in that: include: For each user in the power transaction, a trading account and a consumption account are set up respectively. The trading account is used to record the production and transaction information of green power, and the consumption account is used to record the consumption information of green power. Execute green power transactions according to the preset power transaction type and record transaction information in the transaction account; Based on the production information and transaction information recorded in the transaction account, the user's green electricity transaction settlement is carried out on a monthly basis to obtain the user's green attributes and settlement electricity charges; Based on the transaction and consumption information of green electricity, the user's indirect carbon emissions from electricity are calculated.

2. The method for promoting medium- and long-term carbon reduction transactions through dual accounts according to claim 1, characterized in that: The preset power transaction types include: traditional transactions, distributed resource subject transactions and green attribute transactions; For traditional transactions, the lower limit of the quotation is set based on the coal-fired benchmark electricity price and the periodic transaction clearing electricity price. The formula is as follows: PR M1 =PR coal +(PR a -PR coal )α Among them, PR M1 The lower limit of the quote for traditional transactions; PR a is the clearing electricity price for the current period; PR coal is the benchmark coal-fired electricity price; α is the lower limit coefficient of the traditional transaction quotation; For distributed resource transactions, the lower limit of the quotation is set according to the benchmark coal-fired electricity price. The formula is as follows: PR M2 =PR coal β Among them, PR M2 is the lower limit of the quotation for the distributed resource subject transaction; β is the quotation adjustment coefficient for the distributed resource subject transaction; For green attribute transactions, the lower limit of green attribute quotation is set according to the periodic transaction clearing electricity price and the coal-fired benchmark electricity price. The formula is as follows: PR M3 =(PR a -PR coal )α Among them, PR M3 The lower limit of the quotation for green properties.

3. The method for promoting medium- and long-term carbon reduction transactions through dual accounts according to claim 2, characterized in that: When executing green power trading according to the preset power trading type, it also includes: If the power generation entity still fails to form a transaction after going through traditional transactions and distributed resource entity transactions, the power grid company will conduct guaranteed procurement. The guaranteed procurement price is set according to the lower limit of the quotation of the distributed resource entity transaction, the coal-fired benchmark electricity price and the periodic transaction clearing electricity price. The formula is as follows: PR M =PR M2 +(PR a -PR coal )γ Among them, PR M is the guaranteed purchase price; γ is the purchase price adjustment coefficient.

4. The method for promoting medium- and long-term carbon reduction transactions through dual accounts according to claim 3 is characterized in that: Green electricity transactions are settled monthly for users to obtain their green attributes and electricity charges, including: Based on the transaction information of traditional transactions recorded in the transaction account, the green attribute obtained by the user in the traditional transaction is calculated using the following formula: Among them, QU i,1 is the total amount of green attributes obtained by user i in traditional transaction settlement; m is the number of contracts signed by user i in traditional transactions; QU pi,j,1 is the settlement electricity of user i in contract j; QU gc,j,1 is the grid-connected power of the corresponding unit c; Based on the transaction information of traditional transactions and the green attributes obtained by users, the settlement electricity fee of users in traditional transactions is calculated using the following formula: Among them, c i,1 The electricity fee settled by user i in traditional transactions; PR j,1 is the price of traditional trading contract j; QU ci,j,1 The green attribute corresponding to the green electricity amount agreed by user i in contract j; QU i,j,1 is the green attribute actually obtained by user i in contract j in traditional transactions; According to the transaction information of the distributed resource subject transaction recorded in the transaction account, the settlement electricity fee of the user in the distributed resource subject transaction is calculated by the following formula: Among them, c i,2 is the electricity fee settled by user i in the distributed resource subject transaction; n is the number of contracts signed in the distributed resource subject transaction; QU pi,j,2 PR is the settlement amount of user i in contract j in the distributed resource subject transaction; j,2 The settlement price of contract j in the distributed resource principal transaction of user i; The green attribute of the power generation entity k is calculated according to the following formula: Among them, QU gk,j,2 It is the green attribute obtained by power generation entity k in distributed resource entity transaction contract j.

5. The method for promoting medium- and long-term carbon reduction transactions through dual accounts according to claim 4 is characterized in that: Based on the transaction and consumption information of green electricity, the user's indirect carbon emissions from electricity are calculated, including: Obtain the user's total net purchased electricity, and calculate the user's indirect carbon emissions from electricity based on the net purchased total electricity, net purchased green electricity, and the existing regional power grid carbon emission factor. The formula is as follows: And mj =(And j -And gj )·And F Among them, En mj Indirect carbon emissions from electricity, En j En is the total net electricity purchased by entity j; gj En is the net green electricity purchased by entity j; F is the carbon emission factor.

6. The method for promoting medium- and long-term carbon reduction transactions through dual accounts according to claim 4 is characterized in that: Based on the transaction and consumption information of green electricity, the user's indirect carbon emissions from electricity are calculated, including: Obtain the total carbon emissions, total electricity consumption, and green power consumption of regional power grid i, and calculate the revised carbon emission factor using the following formula: Among them, En mi It can represent the total carbon emissions of regional power grid i; ∑En i is the total power consumption of regional power grid i; ∑En gi is the green electricity consumption of regional grid i; Based on the revised carbon emission factor, the user's indirect carbon emissions from electricity are calculated using the following formula: in, is the revised emission factor for year y; En mi,j,y En is the indirect carbon emissions from electricity generated by entity j in regional power grid i in year y; i,j,y is the total electricity consumption of the user entity in year y; is the green electricity consumption of the user entity in year y.

7. The method for promoting medium- and long-term carbon reduction transactions through dual accounts according to claim 6, characterized in that: Also includes: The indirect carbon emissions per unit output value of electricity for entity j in the regional power grid i in year y are calculated using the following formula: Among them, En mi,j,y is the indirect carbon emissions per unit output value of electricity of user entity j in the regional power grid i in year y, The electricity consumption of the user's main unit output value minus the green electricity consumption; is the revised emission factor for year y; η n,i is the policy control coefficient; Fr i,j,y The electricity consumption per unit output value in the industry in which the subject is located in year y; is the total electricity consumption of the industry in year y-1; is the non-green electricity consumption corresponding to year y-1.

8. The method for promoting medium- and long-term carbon reduction transactions through dual accounts according to claim 4 is characterized in that: Also includes: The combined marginal carbon dioxide emission factor is calculated based on the marginal emission factor of electricity and the marginal emission factor of capacity; Based on the combined marginal carbon dioxide emission factor and the green electricity consumption in the green electricity consumption information, the equivalent emission reduction of users consuming green electricity is calculated.

9. A dual-account device for promoting medium- and long-term carbon reduction transactions, characterized in that: include: A transaction account management module is used to set up a transaction account and a consumption account for each user in the power transaction, use the transaction account to record the production and transaction information of green power, and use the consumption account to record the consumption information of green power; A green power transaction module, configured to execute green power transactions according to a preset power transaction type and record transaction information in the transaction account; A green electricity transaction settlement module is used to settle green electricity transactions for users on a monthly basis based on the production information and transaction information recorded in the transaction account, and to determine the user's green attributes and settlement electricity charges; The carbon emission accounting module is used to calculate the user's indirect carbon emissions from electricity based on the trading and consumption information of green electricity.

10. A dual-account device to promote medium- and long-term carbon reduction transactions, characterized in that: include: A main controller, and a memory connected to the main controller; a memory in which program instructions are stored; The main controller is used to execute program instructions stored in the memory and perform the method according to any one of claims 1 to 8.

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