A method for evaluating power flow economy based on multi-dimensional value of receiving end power market

Abstract

The application discloses a kind of based on the economic evaluation method of power flow of multi-dimension value of receiving end power market, comprising: obtaining the power transmission parameter of the power flow to be evaluated and the market price data of multiple submarkets in receiving end power market, multiple submarkets at least include electric energy market, capacity market and green value market;According to power transmission parameter and market price data, respectively determine the value of power flow in electric energy market, capacity market and green value market;Comprehensive calculation comprehensive economic value of power flow in receiving end power market;According to the comprehensive economic value, generate the power transmission power control parameter of power transmission channel, and send to grid dispatching control system, to adjust the actual power transmission power of power transmission channel, so that the economy of power flow reaches optimal.This application realizes the closed-loop linkage of multi-dimension value evaluation and grid operation control, can according to the dynamic change of market price real-time optimization power transmission power, significantly improve the economic benefit of cross-province cross-region power flow.

Description

Technical Field

[0001] This invention relates to the field of power system planning and power market economic evaluation technology, and in particular to a power flow economic evaluation method based on the multi-dimensional value of the receiving-end power market. Background Technology

[0002] With the deepening of my country's "dual carbon" goals, the construction of a new power system and a unified national electricity market is accelerating. Inter-provincial and inter-regional power flows, as an important vehicle for optimizing resource allocation between large clean energy bases and load centers, have significant implications for power source investment decisions, transmission channel planning, and the formulation of electricity market trading strategies.

[0003] Currently, traditional methods for evaluating the economic viability of power flows primarily focus on a single-dimensional analysis of the value of electrical energy, namely, judging the economic feasibility of power flows by comparing the generation costs at the sending end with the market price of electrical energy at the receiving end. However, in the context of new power systems, the functional attributes of power resources are becoming increasingly diversified. Power flows can provide not only electrical energy resources but also reliable capacity resources, green and low-carbon resources, and ancillary service resources, among other value forms. Simultaneously, the receiving-end power market has gradually established a multi-tiered, segmented market structure, including the energy market (spot and medium-to-long-term), the ancillary service market, the capacity market / capacity compensation mechanism, and the green certificate market. Price signals from different segmented markets reflect the value differences of different types of power resources under varying supply and demand constraints.

[0004] Currently, there is no systematic method for comprehensively and quantitatively evaluating the energy value, capacity value, green value, and ancillary service value that inter-provincial and inter-regional power flows can realize in the receiving-end electricity market. In particular, existing methods often overlook the fundamental difference in value formation mechanisms between existing and incremental power flows—the value of existing power flows is mainly determined by the short-term marginal cost of the receiving-end market, while the value of incremental power flows depends more on long-term marginal costs and the supply and demand situation at the planning target point. Furthermore, existing methods do not fully consider the impact of energy consumption dual control / carbon emission dual control policies on the long-term marginal cost of electricity in the receiving-end market, as well as the additional cost factors that inter-provincial and inter-regional power flows may bear, such as the operating costs of the sending-end system and the allocation of ancillary services.

[0005] More importantly, existing economic evaluation methods typically stop at outputting evaluation conclusions, failing to connect the evaluation results with actual power grid operation and control. The power transmission capacity of transmission channels is often set according to fixed plans or simple empirical rules, unable to be optimized and adjusted based on the dynamic changes in multi-dimensional prices in the receiving-end electricity market, resulting in the underutilization of the economic potential of power flow. Therefore, there is an urgent need for a method that can transform multi-dimensional economic evaluation results into power grid dispatch and control commands to optimize the economics of power flow. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a method for evaluating the economic efficiency of power flow based on the multi-dimensional value of the receiving-end power market.

[0007] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows:

[0008] An economic evaluation method for power flow based on multi-dimensional value in the receiving-end electricity market includes:

[0009] Obtain the power transmission parameters of the power flow to be evaluated, wherein the power transmission parameters include at least the power transmission amount, the power transmission cycle, and the rated capacity of the power transmission channel;

[0010] Acquire market price data for multiple sub-markets in the receiving-end electricity market, wherein the multiple sub-markets include at least the energy market, the capacity market, and the green value market;

[0011] Based on the power transmission parameters and the market price data, the value of the power flow in the electricity market, the capacity market, and the green value market is determined respectively.

[0012] Based on the value of the power flow in the power market, the capacity market, and the green value market, the comprehensive economic value of the power flow in the receiving-end power market is calculated.

[0013] Based on the comprehensive economic value, the power transmission control parameters of the transmission channel are generated, and the power transmission control parameters are sent to the power grid dispatch and control system to adjust the actual power transmission power of the transmission channel so that the economy of the power flow is optimized.

[0014] Furthermore, the electricity market includes a spot electricity market and a medium- to long-term electricity market; determining the value of the electricity flow in the electricity market includes:

[0015] The value of the electricity spot market is determined based on the amount of electricity delivered in the electricity spot market and the corresponding spot market price.

[0016] The value of the medium- and long-term electricity market is determined based on the contracted electricity volume and contracted price of the electricity flow in the medium- and long-term electricity market.

[0017] Further, determining the value of the power flow in the capacity market includes:

[0018] Obtain capacity compensation prices or capacity market prices from the receiving-end electricity market;

[0019] The market value of capacity is determined based on the effective capacity provided by the power flow and the capacity compensation price or capacity market price.

[0020] Furthermore, when the power flow is an existing power flow, the capacity compensation price or capacity market price is a short-term marginal cost price, which refers to the marginal opportunity cost of existing generating units providing available capacity; when the power flow is an incremental power flow, the capacity compensation price or capacity market price is a long-term marginal cost price of providing reliable capacity, which refers to the average annual fixed cost of adding generating capacity to meet future capacity adequacy requirements.

[0021] Furthermore, the green electricity market is a green certificate market; determining the value of the electricity flow in the green electricity market includes:

[0022] Obtain the total power transmission volume of the power flow, the proportion of green electricity in the power transmission volume, and the average transaction price of green certificates;

[0023] The market value of green certificates is determined based on the total electricity delivered, the proportion of green electricity, and the average transaction price of green certificates.

[0024] Furthermore, the power flow economic evaluation method based on the multi-dimensional value of the receiving-end electricity market also includes:

[0025] The comprehensive power transmission cost of the power flow is obtained, which includes investment and construction costs, operation and maintenance costs, fuel costs, capital costs, transmission costs, and transmission losses.

[0026] Other clearing and apportionment costs to be borne by obtaining the power flow, wherein the other clearing and apportionment costs include at least one or more of the following: apportionment of ancillary service costs at the sending or receiving end, and system operating costs;

[0027] Calculate the net present value of the power flow based on the comprehensive economic value, the comprehensive power transmission cost, and the other settlement and allocation costs;

[0028] The net present value is used as the basis for generating the power transmission control parameters so as to maximize the net present value corresponding to the actual power transmission power of the power transmission channel.

[0029] Furthermore, when the plurality of market segments include the power ancillary services market, determining the value of the power flow in the power ancillary services market includes:

[0030] The value of the standby service is determined based on the standby capacity and standby capacity price provided by the power flow; and / or, the value of the black start service is determined based on the black start service capacity and black start capacity price provided by the power flow.

[0031] Furthermore, when determining the value of the power flow in the electricity market, the impact of dual energy consumption control or dual carbon emission control targets is also taken into account, specifically including: when the receiving-end electricity market is expected to have difficulty meeting the dual energy consumption control or dual carbon emission control targets, the cost of penalties to be paid or the cost of purchasing green certificates to achieve the targets is added to the long-term marginal cost of providing electricity within its province.

[0032] This invention also discloses a power flow economic evaluation system based on multi-dimensional value of the receiving-end electricity market, used for power transmission planning and control of inter-provincial and inter-regional transmission channels, specifically including:

[0033] The data acquisition module is used to acquire the transmission parameters of the power flow to be evaluated and the market price data of multiple sub-markets in the receiving-end power market. The transmission parameters include at least the transmission volume, transmission cycle and the rated capacity of the transmission channel.

[0034] The value calculation module is used to determine the value of the power flow in the power energy market, capacity market and green value market respectively based on the power transmission parameters and the market price data, and to comprehensively calculate the comprehensive economic value of the power flow in the receiving-end power market.

[0035] The control parameter generation module is used to generate the power transmission control parameters of the power transmission channel based on the comprehensive economic value.

[0036] The communication module is used to send the power transmission control parameters to the power grid dispatch control system to adjust the actual power transmission power of the transmission channel so as to optimize the economy of the power flow.

[0037] The data acquisition module includes a first communication interface for acquiring market price data and power transmission parameters from a power trading platform, dispatching agency, or database. The value calculation module and control parameter generation module include a processor and a memory. The memory stores a computer program, and the processor executes the computer program to implement the steps of the above-mentioned power flow economic evaluation method based on the multi-dimensional value of the receiving-end power market.

[0038] Compared with the prior art, the advantages of the present invention are as follows:

[0039] 1. This invention breaks through the limitations of traditional methods that only focus on the single dimension of electrical energy. It comprehensively considers the electrical energy value, reliability and capacity value, green and low-carbon value, and ancillary service value that the power flow can realize in the receiving-end power market. It can comprehensively and objectively reflect the comprehensive economic value of cross-provincial and cross-regional power flows in the new power system environment, and avoids decision-making bias caused by single-dimensional evaluation.

[0040] 2. This invention clarifies the essential difference in value formation mechanisms between existing and incremental power flows: the value of existing power flows is quantified using short-run marginal costs in the receiving market, while the value of incremental power flows is assessed using long-run marginal costs. This distinction allows the evaluation results to more accurately reflect the actual economic performance of power flows at different stages of development, improving the scientific rigor and accuracy of the evaluation.

[0041] 3. This invention incorporates the impact of dual energy consumption control and dual carbon emission control targets on the long-term marginal cost of electricity in the receiving market into the evaluation system. It can quantify the transmission effect of green and low-carbon policies on the economics of electricity flow and provide a decision-making basis for the inter-provincial and inter-regional power transmission of clean energy bases that is in line with the "dual carbon" target orientation.

[0042] 4. This invention covers various market segments, including the spot market, medium- and long-term market, capacity market / capacity compensation mechanism, green certificate market, and ancillary services market. It is applicable to the current situation of my country's power market construction and also reserves room for expansion in the future improvement of mechanisms such as capacity market and ancillary services market, demonstrating good foresight and adaptability.

[0043] 5. This invention constructs a complete economic evaluation index system for power flow, which can output the comprehensive economic value of power flow in the receiving-end power market (such as net present value), enabling direct horizontal comparison of power flows from different bases, different channels, and different technical solutions. This provides a quantifiable and comparable decision-making tool for power investment decisions, transmission channel planning, and power trading strategy formulation.

[0044] 6. This invention not only considers the revenue side of power flow (multi-market value), but also systematically incorporates the comprehensive cost of power transmission (investment and construction, operation and maintenance, fuel, capital, transmission, losses, etc.) and other settlement and allocation costs, achieving a complete match between revenue and cost, and ensuring the reliability and practicality of the economic evaluation results.

[0045] 7. This invention uses economic evaluation results (such as net present value) as the optimization objective. It generates power transmission control parameters by solving a power transmission optimization model and sends these parameters to the power grid dispatch and control system to directly adjust the actual power transmission capacity of the transmission channel. This technique enables the power flow to optimize its operation in real time based on the dynamic changes in multi-dimensional prices in the receiving-end electricity market, transforming theoretical economic advantages into actual operational benefits. Compared to traditional fixed-power power transmission schemes, it can significantly improve net present value. Attached Figure Description

[0046] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of resource classification and value-influencing factors in the electricity market according to an embodiment of the present invention;

[0048] Figure 2 This is a schematic diagram illustrating the value of existing electrical energy and capacity in an embodiment of the present invention. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Example 1: A Method for Economic Evaluation of Power Flow and Power Transmission Control Based on Multi-Dimensional Value of Receiving-End Electricity Market

[0051] This embodiment provides a power flow economic evaluation method based on the multi-dimensional value of the receiving-end electricity market, used for power transmission planning and control of inter-provincial and inter-regional transmission channels. The overall research approach of this invention is as follows: First, analyze the resource classification and value types that can be provided in my country's electricity market; second, clarify the types of resources that power flow can provide, and analyze the impact of the receiving-end electricity market product structure and supply-demand constraints on the resource value provided by power flow; finally, based on the different scenarios in the aforementioned research, establish a power flow economic evaluation index system, and generate power transmission control parameters accordingly. The method includes the following steps:

[0052] Step S1: Obtain the power transmission parameters of the power flow to be evaluated.

[0053] The power transmission parameters include at least the power transmission volume, the power transmission cycle, and the rated capacity of the transmission channel. Specifically, for a cross-provincial or cross-regional transmission channel to be evaluated, the planned power transmission volume for each time period of each year within the planned operating cycle (e.g., 25 years) is obtained. Where T represents the year and t represents the time period (e.g., hour). In addition, basic parameters such as the type of power source (coal-fired, gas-fired, wind power, photovoltaic, etc.), the transmission capacity of the transmission channel, and the transmission loss rate also need to be obtained.

[0054] Step S2: Obtain market price data for multiple sub-markets in the receiving-end electricity market.

[0055] like Figure 1 As shown, resources in the electricity market can be classified from several aspects, including functional scale, time scale, spatial scale, and the source type of electricity resources. From a functional scale perspective, electricity resources include four main categories: ancillary service resources, electrical energy resources, reliable generation capacity resources, and transmission capacity resources. These resources realize their value in the receiving-end electricity market through different market segments.

[0056] The market segments include at least the electricity market, capacity market, and green electricity market, and optionally the ancillary services market. Specifically:

[0057] Electricity Market: Obtain clearing prices for various time periods in the receiving province's electricity spot market. (yuan / kWh), and contract prices for each cycle of the medium- and long-term electricity market. (RMB / kWh).

[0058] Capacity Market: Obtaining capacity compensation prices from receiving provinces (RMB / kW) or market price per kW (RMB / kW).

[0059] Green electricity market: Obtaining the average price of green certificate transactions (RMB / Green Certificate), and the responsibility weight of the receiving province for renewable energy consumption.

[0060] Ancillary Services Marketplace (Optional): Obtain pricing for spare capacity (RMB / kW) and Black Start Capacity Price (RMB / kW).

[0061] Step S3: Determine the value of the power flow in each market segment based on the power transmission parameters and market price data.

[0062] The receiving-end electricity market has established various sub-market types, including the electricity energy market (electricity spot market, medium- and long-term market), ancillary services market, capacity market / capacity compensation mechanism, and green certificate market. The value of the electricity resources provided by the electricity flow can be reflected by participating in these electricity trading product markets.

[0063] (1) Market value of electrical energy

[0064] Electricity spot market value:

[0065] For existing electricity flow, the short-run marginal cost price, i.e., the spot market price at the receiving end, is used:

[0066] in, The discount rate is... The total number of years in the evaluation period.

[0067] For incremental electricity flow, long-run marginal cost price is used. :

[0068] Among them, long-run marginal cost price The calculations need to take into account the supply and demand situation of the receiving province at the time of the planning target. If the receiving province is expected to be unable to meet the dual control targets for energy consumption and carbon emissions, then the cost of penalties or green certificates to be paid to achieve the target needs to be added to the long-term marginal cost of power supply in the province.

[0069] Medium- to long-term market value of electricity:

[0070] Under the "spot full-electricity auction + medium- and long-term financial spread contract" model, the value of the medium- and long-term contract is realized through spread settlement:

[0071] In the formula, The price of a medium- to long-term contract in year T, period t; The contracted electricity volume for period t in year T; The spot price for period t in year T; is the discount rate.

[0072] (2) Market value of capacity

[0073] like Figure 2 As shown, for existing power flows, their energy value and capacity value are reflected through the short-run marginal cost price in the receiving-end market. The energy market value of existing power flows can be reflected through the prices in the receiving-end province's electricity spot market, medium- and long-term market, and capacity market / capacity compensation mechanism.

[0074] Under the capacity compensation mechanism:

[0075] In the formula, The capacity compensation price for power type g; The effective capacity of power type g in month t of year T.

[0076] Under the capacity market mechanism:

[0077] Similarly, short-run marginal cost prices are used for existing electricity flows, while long-run marginal cost prices are used for incremental electricity flows.

[0078] (3) Market value of green electricity

[0079] In the formula, This represents the total amount of electricity delivered to the receiving end in year T. The percentage of green electricity in the total electricity transmitted in year T; Let T be the average price of green certificate transactions in year T.

[0080] (4) Market value of ancillary services (optional)

[0081] Alternative services:

[0082] Black Boot Service:

[0083] In the formula, The price of the standby capacity awarded in the t period of year T (RMB / kW); For the reserve capacity awarded in the time period t of year T, The starting capacity price (yuan / kW) for the black starting capacity in the t month of year T; The black-start service capacity for the t-th month of year T;

[0084] Step S4: Calculate the overall economic value of the power flow in the receiving-end electricity market.

[0085] The total economic value is obtained by adding up the values ​​of each of the above market segments. :

[0086]

[0087] Step S5: Obtain the comprehensive cost of power transmission and other settlement and allocation expenses, and calculate the net present value.

[0088] Comprehensive power transmission cost include:

[0089] Investment and construction costs: the annual discounted value of one-time investments such as engineering construction, equipment purchase, land occupation, and preliminary development.

[0090] Operation and maintenance costs: the annual discounted value of expenses such as daily operation, consumables, and technology upgrades.

[0091] Fuel cost: For thermal power, this is the present value of fuel procurement costs over the years.

[0092] Cost of capital: The present value of financial expenses such as loan interest over the years.

[0093] Transmission costs include the price of power transmission within and outside the province, the price of power transmission in the regional power grid, the price of power transmission for special projects across provinces and regions, and the cost of power loss caused by transmission losses.

[0094] Other liquidation and apportionment costs :

[0095]

[0096] in, This refers to the total amount of other clearing and apportionment expenses in month t of year T, including the apportionment of ancillary service expenses for the sending or receiving end, system operation fees, etc.

[0097] Net Present Value (NPV):

[0098] Step S6: Generate power transmission control parameters based on net present value and send them to the power grid dispatch and control system.

[0099] Using the net present value calculated in step S5 as the optimization objective, the power transmission curve that maximizes the net present value is obtained. Specifically, the following optimization model is established:

[0100] Objective function:

[0101]

[0102] in, This represents the power transmission vector for each time period.

[0103] The constraints include:

[0104] Rated capacity constraints of power transmission channels: ;

[0105] Total power transmission capacity constraint: ;

[0106] Minimum technical output constraint: ;

[0107] Climbing speed constraint: ;

[0108] DC constant power operation constraints:

[0109] In the formula, This refers to the rated capacity of the power transmission channel; This represents the minimum operating power of the transmission channel; The annual power transmission capacity of the transmission channel; This represents the maximum ramp rate of the power transmission channel. This represents the shortest duration for constant power operation of the power transmission channel. This refers to the state variable representing the power change of the power transmission channel.

[0110] Solving the above optimization model yields the optimal power transmission curve. This information is then encoded into power transmission control parameters. These power transmission control parameters include power setpoints for each time period.

[0111] The generated power transmission control parameters are sent to the power grid dispatch and control system (EMS / SCADA system) via a communication interface. After receiving the parameters, the power grid dispatch and control system automatically adjusts the active power setpoint of the converter station or generator in the transmission channel to make the actual power transmission track the optimized power curve, thereby maximizing the economic efficiency of power flow.

[0112] Example 2: Power Flow Economic Evaluation and Transmission Power Control System Based on Multi-Dimensional Value of Receiving-End Electricity Market

[0113] This embodiment provides a power flow economic evaluation and transmission power control system based on multi-dimensional value of the receiving-end electricity market, used for transmission power planning and control of inter-provincial and inter-regional power transmission channels. The system includes:

[0114] Data acquisition module: Used to acquire the transmission parameters of the power flow to be evaluated and market price data of multiple sub-markets in the receiving-end power market. The transmission parameters include at least the transmission volume, transmission cycle, and rated capacity of the transmission channel. This data acquisition module includes a first communication interface, which can connect to a power trading platform, dispatching agency, or database server via an API interface to automatically acquire or manually input the required data.

[0115] Value Calculation Module: Based on power transmission parameters and market price data, this module determines the value of the power flow in the energy market, capacity market, green electricity market, and optionally in the power ancillary services market, and comprehensively calculates the overall economic value of the power flow in the receiving-end electricity market.

[0116] Cost calculation module: used to obtain the comprehensive cost of power transmission and other settlement and allocation expenses, and to calculate the net present value of power flow based on the comprehensive economic value, the comprehensive cost of power transmission and other settlement and allocation expenses.

[0117] Control parameter generation module: used to solve the power transmission optimization model with the net present value as the optimization objective, and generate the power transmission control parameters of the transmission channel. The power transmission control parameters include at least the power setpoints for each time period.

[0118] Communication module: Used to send power transmission control parameters to the power grid dispatch and control system to adjust the actual power transmission power of the transmission channel and optimize the economy of power flow.

[0119] The value calculation module, cost calculation module, and control parameter generation module are integrated in the same processor or deployed on different computing nodes. The memory stores a computer program, and when the processor executes the computer program, it implements the steps of the power flow economic evaluation and transmission power control method based on the multi-dimensional value of the receiving-end power market described in Embodiment 1.

[0120] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A method for evaluating the economic efficiency of power flow based on multi-dimensional value in the receiving-end electricity market, characterized in that, include: Obtain the power transmission parameters of the power flow to be evaluated, wherein the power transmission parameters include at least the power transmission amount, the power transmission cycle, and the rated capacity of the power transmission channel; Acquire market price data for multiple sub-markets in the receiving-end electricity market, wherein the multiple sub-markets include at least the energy market, the capacity market, and the green value market; Based on the power transmission parameters and the market price data, the value of the power flow in the electricity market, the capacity market, and the green value market is determined respectively. Based on the value of the power flow in the power market, the capacity market, and the green value market, the comprehensive economic value of the power flow in the receiving-end power market is calculated. Based on the comprehensive economic value, the power transmission control parameters of the transmission channel are generated, and the power transmission control parameters are sent to the power grid dispatch and control system to adjust the actual power transmission power of the transmission channel so that the economy of the power flow is optimized.

2. The method according to claim 1, characterized in that, The electricity market includes the electricity spot market and the electricity medium- and long-term market; Determining the value of the power flow in the electricity market includes: The value of the electricity spot market is determined based on the amount of electricity delivered in the electricity spot market and the corresponding spot market price. The value of the medium- and long-term electricity market is determined based on the contracted electricity volume and contracted price of the electricity flow in the medium- and long-term electricity market.

3. The method according to claim 1, characterized in that, Determining the value of the power flow in the capacity market includes: Obtain capacity compensation prices or capacity market prices from the receiving-end electricity market; The market value of capacity is determined based on the effective capacity provided by the power flow and the capacity compensation price or capacity market price.

4. The method according to claim 3, characterized in that, When the power flow is an existing power flow, the capacity compensation price or capacity market price is the short-term marginal cost price, which refers to the marginal opportunity cost of existing generating units providing available capacity; when the power flow is an incremental power flow, the capacity compensation price or capacity market price is the long-term marginal cost price of providing reliable capacity, which refers to the average annual fixed cost of adding generating capacity to meet future capacity adequacy requirements.

5. The method according to claim 1, characterized in that, The green electricity market is a green certificate market; Determining the value of the power flow in the green electricity market includes: Obtain the total power transmission volume of the power flow, the proportion of green electricity in the power transmission volume, and the average transaction price of green certificates; The market value of green certificates is determined based on the total electricity delivered, the proportion of green electricity, and the average transaction price of green certificates.

6. The method according to claim 1, characterized in that, Also includes: The comprehensive power transmission cost of the power flow is obtained, which includes investment and construction costs, operation and maintenance costs, fuel costs, capital costs, transmission costs, and transmission losses. Other clearing and apportionment costs to be borne by obtaining the power flow, wherein the other clearing and apportionment costs include at least one or more of the following: apportionment of ancillary service costs at the sending or receiving end, and system operating costs; Calculate the net present value of the power flow based on the comprehensive economic value, the comprehensive power transmission cost, and the other settlement and allocation costs; The net present value is used as the basis for generating the power transmission control parameters so as to maximize the net present value corresponding to the actual power transmission power of the power transmission channel.

7. The method according to claim 1, characterized in that, When the plurality of market segments include the power ancillary services market, determining the value of the power flow in the power ancillary services market includes: The value of the standby service is determined based on the standby capacity provided by the power flow and the standby capacity price; and / or, The value of the black start service is determined based on the black start service capacity and black start capacity price provided by the power flow.

8. The method according to claim 1, characterized in that, When determining the value of the electricity flow in the electricity market, the impact of dual energy consumption control or dual carbon emission control targets is also taken into account, specifically including: when the receiving-end electricity market is expected to have difficulty meeting the dual energy consumption control or dual carbon emission control targets, the cost of penalties to be paid or the cost of purchasing green certificates to achieve the targets is added to the long-term marginal cost of providing electricity within its province.

9. A power flow economic evaluation system based on multi-dimensional value of the receiving-end electricity market, used for power transmission planning and control of inter-provincial and inter-regional transmission channels, characterized in that, include: The data acquisition module is used to acquire the transmission parameters of the power flow to be evaluated and the market price data of multiple sub-markets in the receiving-end power market. The transmission parameters include at least the transmission volume, transmission cycle and the rated capacity of the transmission channel. The value calculation module is used to determine the value of the power flow in the power energy market, capacity market and green value market respectively based on the power transmission parameters and the market price data, and to comprehensively calculate the comprehensive economic value of the power flow in the receiving-end power market. The control parameter generation module is used to generate the power transmission control parameters of the power transmission channel based on the comprehensive economic value. The communication module is used to send the power transmission control parameters to the power grid dispatch control system to adjust the actual power transmission power of the transmission channel so as to optimize the economy of the power flow. The data acquisition module includes a first communication interface for acquiring market price data and power transmission parameters from a power trading platform, dispatching agency, or database; the value calculation module and control parameter generation module include a processor and a memory, the memory storing a computer program, and the processor executing the computer program to implement the steps of the method described in any one of claims 1 to 8.

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