Thermal power plant cost accounting method and system based on multi-unit system, and terminal equipment
By using a multi-unit system cost accounting method for thermal power plants, collecting and processing multi-source data from individual units, constructing a cost accounting model, tracing real-time marginal costs, and generating optimization suggestions, this method solves the problem of insufficient identification of unit differences in traditional thermal power plant cost accounting methods, thereby improving the market competitiveness and operational efficiency of power plants.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-03-10
AI Technical Summary
Traditional thermal power plant cost accounting methods use the entire power plant or a single unit as a coarse-grained unit, which cannot accurately identify differences between units. Costs are disconnected from core operating parameters that affect economic efficiency, making it difficult for management to trace cost drivers and for operators to quantify the impact of operational adjustments on costs, leaving them in a passive position in market bidding.
A cost accounting method for thermal power plants based on multi-unit systems is adopted. By collecting and preprocessing multi-source data of individual units, a cost accounting model is constructed, real-time marginal costs are traced, and operating parameters are displayed on a visualization platform to generate operation optimization suggestions.
It enables precise cost traceability and dynamic accounting, provides accurate marginal cost data, and enhances the power plant's market competitiveness and operational optimization capabilities.
Smart Images
Figure CN121638567A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The embodiment of the present application relates to the cost management and optimization technical field of thermal power plants, in particular to a thermal power plant cost accounting method, system and terminal equipment based on a multi-unit system. BACKGROUND
[0002] The traditional thermal power plant cost accounting method takes the entire power plant or a single unit as a coarse granularity unit, which cannot accurately identify the differences between units, and the cost is disconnected with the core operating parameters (such as main steam temperature, main steam pressure, condenser vacuum, etc.) that affect the economy. This makes it difficult for management to trace the cost causes, and for the operating personnel to quantitatively adjust the impact of operation on cost, and in the market bidding, it is passive due to the lack of real-time marginal cost data.
[0003] Therefore, to provide a thermal power plant cost accounting method capable of accurately tracing the cost and accurately accounting for the marginal cost is a technical problem to be solved in the field. SUMMARY
[0004] In view of the problems in the background art, the embodiment of the present application provides a thermal power plant cost accounting method, system and terminal equipment based on a multi-unit system, which can realize the linkage of accurate cost tracing, dynamic accounting and operation optimization, provide accurate marginal cost data for market bidding, and improve the core competitiveness of the power plant.
[0005] In a first aspect, the present application provides a thermal power plant cost accounting method based on a multi-unit system, the multi-unit system comprising a plurality of single units, and the cost accounting method comprising: Collecting multi-source data of each single unit, and pre-processing the multi-source data to obtain standardized data, the multi-source data including fuel, consumable cost, operating economic parameters and market data parameters of each single unit; Building a cost accounting model including key operating parameters, single unit fuel consumption and auxiliary power consumption based on the multi-source data, the key operating parameters including main steam temperature, main steam pressure and condenser vacuum; Determining the real-time marginal cost of each single unit based on the cost accounting model, and determining the power offer based on the real-time marginal cost of each single unit.
[0006] Optionally, the cost accounting method further comprises: displaying the real-time cost and operating economic parameters of the entire plant and each single unit on a visualization platform.
[0007] Optionally, the cost accounting method further comprises: using the cost accounting model to trace the key operating parameters causing cost fluctuations as cost impact parameters, and generating operation optimization suggestions based on the cost impact parameters.
[0008] Optionally, multi-source data of each single unit is collected, and the multi-source data is preprocessed to obtain standardized data, including: Fuel, consumable cost, operation economic parameter and market data parameter of each single unit are collected; A unified data model is adopted to perform semantic alignment and format standardization on the multi-source data, and data cleaning and compensation are performed based on working condition recognition.
[0009] Optionally, real-time marginal cost of each single unit is determined based on a preset cost accounting model, and power quotation is determined based on the real-time marginal cost of each single unit, including: Parameter variation amount is converted into cost amount (yuan / unit time) as a dynamic cost factor based on the preset cost accounting model, the parameter variation amount including key operation parameter variation amount and market data parameter variation amount; Based on real-time dynamic cost factor data, public cost is collected to each single unit based on activity-based costing, and real-time marginal cost of each single unit is calculated; Power quotation is determined based on the real-time marginal cost of each single unit.
[0010] Optionally, a cost accounting model including key operation parameter, single unit fuel consumption and auxiliary power consumption is constructed based on the multi-source data through mechanism analysis and data mining.
[0011] In a second aspect, the application provides a thermal power plant cost accounting system based on a multi-unit system, the multi-unit system including a plurality of single units, and the cost accounting system including: A data processing module configured to collect multi-source data of each single unit, and to preprocess the multi-source data to obtain standardized data, the multi-source data including fuel, consumable cost, operation economic parameter and market data parameter of each single unit; A cost accounting module configured to construct a cost accounting model including key operation parameter, single unit fuel consumption and auxiliary power consumption based on the multi-source data, to determine real-time marginal cost of each single unit based on the cost accounting model, and to determine power quotation based on the real-time marginal cost of each single unit, the key operation parameter including main steam temperature, main steam pressure and condenser vacuum.
[0012] Optionally, the cost accounting system further includes a visualization platform configured to display real-time cost and operation economic parameter of the whole plant and each single unit.
[0013] Optionally, the cost accounting module is configured to trace, based on the cost accounting model, a key operating parameter causing a cost fluctuation as a cost impact parameter, and generate an operation optimization suggestion based on the cost impact parameter.
[0014] In a third aspect, the present application provides a terminal device, comprising at least one control processor and a memory connected to the at least one control processor in communication; the memory stores instructions executable by the at least one control processor, and the instructions are executed by the at least one control processor to enable the at least one control processor to perform any of the above cost accounting methods.
[0015] The technical scheme provided by the embodiments of the present application provides a power plant cost accounting method, system and terminal device based on a multi-unit system, which traces the real-time marginal cost of each single unit, and compared with the cost accounting method in the prior art which takes each single unit as a coarse granularity, can realize the linkage of accurate cost tracing, dynamic accounting and operation optimization, provide accurate marginal cost data for market bidding, and improve the core competitiveness of the power plant. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a flowchart of a power plant cost accounting method based on a multi-unit system provided by the embodiments of the present application; Figure 2 shows Figure 1 the flowchart of step S1 in the cost accounting method shown; Figure 3 shows Figure 1 the flowchart of step S3 in the cost accounting method shown; Figure 4 is a flowchart of another power plant cost accounting method based on a multi-unit system provided by the embodiments of the present application; Figure 5 is a schematic diagram of the framework structure of a power plant cost accounting system based on a multi-unit system provided by the embodiments of the present application; Figure 6 is a schematic diagram of the framework structure of another power plant cost accounting system based on a multi-unit system provided by the embodiments of the present application; Figure 7 is a schematic diagram of the structure of a terminal device provided by the embodiments of the present application.
[0017] REFERENCE NUMERALS: 1 - cost accounting system; 11 - data acquisition module; 12 - cost accounting module; 13 - visualization platform; 100 - terminal device; 111 - processor; 112 - communication interface; 113 - storage; 114 - communication bus. Detailed Implementation
[0018] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0019] Traditional cost accounting methods for thermal power plants use the entire plant or a single unit as coarse-grained units, failing to accurately identify differences between units. Furthermore, costs are disconnected from core operating parameters affecting economic efficiency (such as temperature and vacuum levels). This makes it difficult for management to trace cost drivers, and operators cannot quantify the impact of operational adjustments on costs, leaving them at a disadvantage in market bidding due to a lack of real-time marginal cost data.
[0020] To address the aforementioned issues, this application provides a method, system, and terminal equipment for cost accounting in thermal power plants based on a multi-unit system. This method enables accurate cost traceability and precise calculation of marginal costs. Specifically, the multi-unit system includes multiple individual units, each of which is a group of equipment within the thermal power plant capable of generating electricity through thermal power generation. This group includes boilers, coal mills, steam turbines, and other supporting equipment (such as flue gas treatment equipment).
[0021] Figure 1 This is a flowchart illustrating a cost accounting method for thermal power plants based on multi-unit systems, provided in an embodiment of this application. Figure 1 As shown, the cost accounting method provided in this embodiment includes: S1: Collect multi-source data for each unit and preprocess the multi-source data to obtain standardized data. The multi-source data includes fuel and consumable costs, operating economic parameters and market data parameters for each unit.
[0022] Specifically, the fuel is usually coal, but with technological advancements, coal can be replaced by other fuels.
[0023] Specifically, consumable costs refer to the material costs used for flue gas treatment, which includes operations such as desulfurization and denitrification. Materials used for flue gas treatment typically include limestone, liquid ammonia, and urea.
[0024] Specifically, operating economic parameters refer to the cost variations of a single unit under different operating conditions due to differences in operating parameters. For example, the operating economic parameter of a single unit in the first operating condition is a1, and the operating economic parameter in the second operating condition is a2.
[0025] Specifically, market data parameters refer to price changes in fuel and consumable costs caused by market factors.
[0026] Figure 2 It shows Figure 1 The flowchart illustrates step S1 of the cost accounting method shown. Figure 2As shown, the cost accounting method provided in the embodiment specifically includes the following steps. S11: Collecting the fuel, consumable cost, operation economic parameter and market data parameter of each single unit.
[0027] S12: Adopting a unified data model to perform semantic alignment and format standardization on the multi-source data, and performing data cleaning and compensation based on working condition identification.
[0028] S2: Constructing a cost accounting model including key operation parameters, single unit fuel consumption and auxiliary power consumption based on the multi-source data, the key operation parameters including main steam temperature, main steam pressure and condenser vacuum. Specifically, in this step, a cost accounting model including key operation parameters, single unit fuel consumption and auxiliary power consumption is constructed based on multi-source data through mechanism analysis and data mining.
[0029] Specifically, the key operation parameters of a single unit are different at different powers. For example, for a certain single unit, when the power is 60% of the rated power, the main steam temperature is T1, the main steam pressure is P1, and the condenser vacuum is Pv1; when the power is 80% of the rated power, the main steam temperature is T2, the main steam pressure is P2, and the condenser vacuum is Pv2.
[0030] Since the key operation parameters are different, the amount of fuel consumed by the single unit is also different, that is, the cost of fuel consumption is different, and the key operation parameters also affect the total power generated and the auxiliary power consumption, so the key operation parameters make the auxiliary power rate different.
[0031] S3: Determining the real-time marginal cost of each single unit based on the cost accounting model, and determining the power quotation based on the real-time marginal cost of each single unit.
[0032] Specifically, the marginal cost refers to the amount of total cost increased by the producer for each additional unit of product, that is, the total cost of n+1 units of product minus the total cost of n units of product.
[0033] In the actual production process of a thermal power plant, not every single unit is in the same operating state, that is, the key operation parameters of every single unit are not the same, and the equipment in each single unit also has different types, so tracing the real-time marginal cost of each single unit in the cost accounting process is beneficial to accurately calculating the production cost of each kilowatt-hour of electricity.
[0034] Figure 3 The cost accounting method is shown in the flowchart of step S3. Figure 1 As shown, the cost accounting method provided in the embodiment specifically includes the following steps. Figure 3 As shown, the cost accounting method provided in the embodiment specifically includes the following steps. S31: convert the parameter variation amount into an amount of cost (yuan / unit time) as a dynamic cost factor based on a preset cost accounting model, the parameter variation amount including a key operation parameter variation amount and a market data parameter variation amount.
[0035] S32: according to real-time dynamic cost factor data, collect public costs to each single unit based on the activity-based costing method, and calculate the real-time marginal cost of each single unit.
[0036] The activity-based costing method refers to a cost management method that traces or allocates resource costs to each operation according to resource drivers, calculates operation costs, and then traces or allocates operation costs to each cost object according to operation drivers, and finally completes cost calculation.
[0037] S33: determine the electricity price based on the real-time marginal cost of each single unit.
[0038] The cost accounting method provided in the embodiment traces the real-time marginal cost of each single unit, and compared with the cost accounting method in the prior art which takes each single unit as a coarse granularity, the cost accounting method provided in the embodiment can realize the linkage of accurate cost tracing, dynamic accounting and operation optimization, provide accurate marginal cost data for market bidding, and improve the core competitiveness of the power plant.
[0039] Figure 4 is another flowchart of a cost accounting method for a thermal power plant based on a multi-unit system provided in the embodiment of the application. As shown in Figure 4 The cost accounting method provided in the embodiment further includes: S4: display the real-time cost and operation economic parameters of the whole plant and each single unit on a visualization platform. Specifically, the visualization platform can also display the key operation parameters, fuel consumption and other data of each single unit, so that the staff can timely understand the related parameters and costs of the whole plant and each single unit.
[0040] As shown in Figure 4 The cost accounting method provided in the embodiment further includes: S5: trace the key operation parameters causing cost fluctuation as cost impact parameters, and generate operation optimization suggestions based on the cost impact parameters.
[0041] In a specific embodiment, the key operation parameter causing cost increase is that the main steam temperature is lower than the standard value, the main steam temperature is taken as the cost impact parameter, and the operation optimization suggestion of controlling the main steam temperature to be increased so as to reduce the cost is given.
[0042] The cost accounting method provided in this embodiment traces the key operating parameters that cause cost fluctuations, thereby proposing operational optimization suggestions, which helps to better control production costs.
[0043] Based on the same inventive concept, this application provides a cost accounting system for thermal power plants based on a multi-unit system, which includes multiple individual units. Figure 5 This is a schematic diagram of the framework structure of a thermal power plant cost accounting system based on a multi-unit system, provided in an embodiment of this application. Figure 5 As shown, the cost accounting system 1 provided in this embodiment includes a data processing module and a cost accounting module 12.
[0044] like Figure 5 As shown, the data processing module is configured to collect multi-source data from each unit and preprocess the multi-source data to obtain standardized data. The multi-source data includes fuel, consumable costs, operating economic parameters, and market data parameters for each unit.
[0045] In the cost accounting system 1 provided in this embodiment, the data processing module is specifically configured to collect the fuel and consumable costs, operating economic parameters and market data parameters of each single unit, and to use a unified data model to perform semantic alignment and format standardization on multi-source data, and to clean and compensate the data based on operating condition identification.
[0046] Specifically, the fuel is usually coal, but with technological advancements, coal can be replaced by other fuels.
[0047] Specifically, consumable costs refer to the material costs used for flue gas treatment, which includes operations such as desulfurization and denitrification. Materials used for flue gas treatment typically include limestone, liquid ammonia, and urea.
[0048] Specifically, operating economic parameters refer to the cost variations of a single unit under different operating conditions due to differences in operating parameters. For example, the operating economic parameter of a single unit in the first operating condition is a1, and the operating economic parameter in the second operating condition is a2.
[0049] Specifically, market data parameters refer to price changes in fuel and consumable costs caused by market factors.
[0050] like Figure 5 As shown, the cost accounting module 12 is configured to construct a cost accounting model based on multi-source data, including key operating parameters, fuel consumption of a single unit, and power consumption of the plant. Based on the cost accounting model, the real-time marginal cost of each single unit is determined, and the power price is determined based on the real-time marginal cost of each single unit. Key operating parameters include main steam temperature, main steam pressure, and condenser vacuum.
[0051] In the cost accounting system 1 provided by the embodiment, the cost accounting module 12 is specifically configured to construct a cost accounting model including key operation parameters, fuel consumption of a single unit and plant power consumption based on multi-source data through mechanism analysis and data mining; convert a parameter change amount into a cost amount (yuan / unit time) as a dynamic cost factor based on the preset cost accounting model, the parameter change amount including a key operation parameter change amount and a market data parameter change amount; collect public costs to each single unit based on the activity-based costing method according to real-time dynamic cost factor data, calculate real-time marginal costs of each single unit, and determine power quotes based on the real-time marginal costs of each single unit.
[0052] Specifically, the key operation parameters of a single unit are different at different powers. For example, for a certain single unit, the main steam temperature is T1, the main steam pressure is P1, and the condenser vacuum degree is Pv1 at 60% rated power, and the main steam temperature is T2, the main steam pressure is P2, and the condenser vacuum degree is Pv2 at 80% rated power.
[0053] Since the key operation parameters are different, the amount of fuel consumed by the single unit is also different, that is, the cost of fuel consumption is different, and the key operation parameters are different, which also affects the total power generated and the plant power consumption, so the key operation parameters are different, which makes the plant power rate different.
[0054] Specifically, the marginal cost (Marginal Cost) is the total cost of the producer for each additional unit of product, which is the marginal cost, that is, the total cost of n+1 units of product minus the total cost of n units of product.
[0055] In the actual production process of a thermal power plant, not every single unit is in the same operating state, that is, the key operation parameters of each single unit are not the same, and the equipment in each single unit also has different types, so tracing the real-time marginal cost of each single unit in the cost accounting process is beneficial to accurately calculating the production cost of each kilowatt-hour of electricity.
[0056] The activity-based costing method is a cost management method that traces or allocates resource costs to each activity according to resource drivers, calculates activity costs, and then traces or allocates activity costs to each cost object according to activity drivers, and finally completes cost calculation.
[0057] The cost accounting system 1 provided by the embodiment traces the real-time marginal cost of each single unit, which can realize the linkage of accurate cost tracing, dynamic accounting and operation optimization compared with the cost accounting of each single unit as a coarse granularity in the prior art, provides accurate marginal cost data for market bidding, and improves the core competitiveness of the power plant.
[0058] Figure 6 is another schematic diagram of a framework structure of a cost accounting system 1 of a thermal power plant based on a multi-unit system provided by an embodiment of the present application. As shown in the figure, Figure 6 the cost accounting system 1 provided by the embodiment further includes a visualization platform 13, which is configured to display real-time costs and operation economic parameters of each single unit of the whole plant.
[0059] Specifically, the visualization platform 13 can also display key operation parameters, fuel consumption and other data of each single unit, so that the staff can timely understand the relevant parameters and costs of each single unit of the whole plant.
[0060] As shown in the figure, Figure 6 in the cost accounting system 1 provided by the embodiment, the cost accounting module 12 is further configured to trace key operation parameters causing cost fluctuation as cost impact parameters based on the cost accounting model, and generate operation optimization suggestions based on the cost impact parameters.
[0061] In a specific embodiment, the key operation parameter causing cost increase is that the main steam temperature is lower than the standard value, the main steam temperature is taken as the cost impact parameter, and the operation optimization suggestion of controlling the main steam temperature to be increased so as to reduce the cost is given.
[0062] The cost accounting system 1 provided by the embodiment traces the key operation parameters causing cost fluctuation, thereby proposing operation optimization suggestions, which is beneficial to better control the production cost.
[0063] Based on the same inventive concept, an embodiment of the present application provides a terminal device. Figure 7 is a schematic diagram of a structure of a terminal device provided by an embodiment of the present application. As shown in the figure, Figure 7 the terminal device 100 provided by the embodiment includes at least one control processor 111 and a memory 113 in communication connection with the at least one control processor 111; the memory 113 stores instructions executable by the at least one control processor 111, and the instructions are executed by the at least one control processor 111 to enable the at least one control processor 111 to perform any of the cost accounting methods in the above embodiments.
[0064] As shown in the figure, Figure 7 the electronic device provided by the embodiment includes a processor 111, a communication interface 112, a memory 113 and a communication bus 114, wherein the processor 111, the communication interface 112 and the memory 113 complete communication among each other through the communication bus 114.
[0065] The terminal device 100 provided by the embodiment can implement any cost accounting method in the above embodiments, has the beneficial effects of the cost accounting method in the above embodiments, and will not be described here again.
[0066] The device embodiments described above are only schematic, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, that is, can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment scheme.
[0067] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software plus a general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.
[0068] The above embodiments are only examples for clearly illustrating, and not limiting the embodiments. Those skilled in the art can make other different forms of changes or modifications on the basis of the above description. Here, all the embodiments do not need to be exhausted, and the obvious changes or modifications derived therefrom are still within the protection scope of the application.
Claims
1. A method for cost accounting of a thermal power plant based on a multi-unit system, the multi-unit system comprising a plurality of single units, characterized in that, The cost accounting method comprises: Collecting multi-source data of each single unit group, and pre-processing the multi-source data to obtain standardized data, wherein the multi-source data comprises fuel, consumable cost, operation economic parameter and market data parameter of each single unit group; Based on the multi-source data, a cost accounting model comprising key operation parameters, single unit group fuel consumption and auxiliary power consumption is constructed, wherein the key operation parameters comprise main steam temperature, main steam pressure and condenser vacuum degree; Based on the cost accounting model, real-time marginal cost of each single unit group is determined, and power quotation is determined based on the real-time marginal cost of each single unit group.
2. The cost accounting method according to claim 1, characterized by, Further comprising: A visualization platform is used to display real-time cost and operation economic parameter of each single unit group.
3. The cost accounting method according to claim 2, characterized by, Further comprising: The cost accounting model is used to trace key operation parameters causing cost fluctuation as cost influence parameters, and operation optimization suggestions are generated based on the cost influence parameters.
4. The cost accounting method according to any one of claims 1 to 3, characterized in that, Collecting multi-source data of each single unit group, and pre-processing the multi-source data to obtain standardized data, comprising: Collecting fuel, consumable cost, operation economic parameter and market data parameter of each single unit group; A unified data model is used to perform semantic alignment and format standardization on multi-source data, and data cleaning and compensation are performed based on working condition identification.
5. The cost accounting method according to claim 4, characterized by Based on a preset cost accounting model, real-time marginal cost of each single unit group is determined, and power quotation is determined based on the real-time marginal cost of each single unit group, comprising: Based on the preset cost accounting model, parameter variation is converted into cost amount (yuan / unit time) as dynamic cost factor, wherein the parameter variation comprises key operation parameter variation and market data parameter variation; Based on job cost method, public cost is collected to each single unit group according to real-time dynamic cost factor data, and real-time marginal cost of each single unit group is calculated; Based on the real-time marginal cost of each single unit group, power quotation is determined.
6. The cost accounting method according to claim 5, characterized by Based on the multi-source data, a cost accounting model comprising key operation parameters, single unit group fuel consumption and auxiliary power consumption is constructed through mechanism analysis and data mining.
7. A cost accounting system for a thermal power plant based on a multi-unit system, the multi-unit system comprising a plurality of single units, characterized by, The cost accounting system comprises: A data processing module configured to collect multi-source data of each single unit group, and pre-process the multi-source data to obtain standardized data, wherein the multi-source data comprises fuel, consumable cost, operation economic parameter and market data parameter of each single unit group; A cost accounting module configured to construct a cost accounting model comprising key operation parameters, single unit group fuel consumption and auxiliary power consumption based on the multi-source data, determine real-time marginal cost of each single unit group based on the cost accounting model, and determine power quotation based on the real-time marginal cost of each single unit group, wherein the key operation parameters comprise main steam temperature, main steam pressure and condenser vacuum degree.
8. The cost accounting system according to claim 7, characterized by Further comprising: A visualization platform configured to display real-time cost and operation economic parameter of each single unit group.
9. The cost accounting system according to claim 7, characterized by The cost accounting module is further configured to trace, based on the cost accounting model, key operating parameters that cause cost fluctuations as cost impact parameters, and generate operating optimization suggestions based on the cost impact parameters.
10. A terminal device, comprising: The cost accounting method comprises the steps of: acquiring cost data of a product; determining a cost accounting model based on the cost data; and performing cost accounting based on the cost accounting model. The cost accounting method comprises the steps of: acquiring cost data of a product; determining a cost accounting model based on the cost data; and performing cost accounting based on the cost accounting model.