CN116739630A - Real-time cost accounting system for fire coal of power plant - Google Patents
Real-time cost accounting system for fire coal of power plant Download PDFInfo
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Abstract
The invention provides a real-time cost accounting system for coal burning in a power plant, which relates to the technical field of coal burning cost accounting, and comprises the following components: determining the current transportation process of different coal types in a power plant and the price of corresponding coal types based on a transportation coal-fired association database, and determining the first unit price of the corresponding coal types; determining allowable processing cost of different coal types in the power plant and an adjustment coefficient matched with the allowable processing cost based on a processing coal-fired associated database, and processing the corresponding first unit price to obtain a corresponding second unit price; determining power generation coal consumption data of different coal blending and burning schemes based on the historical coal blending and burning data and the corresponding historical power generation data; and determining the blending coal consumption data related to the blending coal burning scheme of the power plant in the current time period, and calculating the real-time cost of the fire coal by combining the second unit price and the coal consumption of each coal type corresponding to the blending coal consumption data, thereby effectively improving the accuracy of the calculation of the real-time cost of the fire coal and providing a reliable basis for the power pricing of the power plant.
Description
Technical Field
The invention relates to the technical field of coal cost accounting, in particular to a real-time coal cost accounting system for a power plant.
Background
At present, the thermal power plant still occupies most of the total power generation amount, the coal cost occupies about 70% of the total power generation cost, and the variation of the coal price affects the profit of the ignition power plant. How to better formulate electricity price, realize profit maximization of thermal power plant, need to have a specific understanding to the coal cost, so it is important to the calculation of coal cost. Existing coal cost calculations are typically monthly based on financial calculations, while fluctuations in coal price are daily, which can result in a significant degree of error in the final decision made.
Therefore, the invention provides a real-time cost accounting system for coal burning in a power plant,
background
In recent years, the force and pace of the reform of the national electric power system are increased, and the situation that the supply and demand of electric power are larger than those of the demand of electric power is generated, and each large power generation group in China obviously forms a strong competition in the electric power market in partial areas. Because the share of each power generation group in the whole power generation capacity market is insufficient to form market force, the power generation groups are required to have clear knowledge of the performance and fuel cost of the subordinate power plants, and then the optimal quotation in the power market is given by combining other market information, so that the share of the market is occupied to the maximum extent and the maximum profit is obtained.
At present, two methods are mainly used for calculating the coal cost of power generation enterprises. According to the first method, the financial calculation method is adopted, the coal cost is obtained according to financial monthly newspaper, the timeliness is poor, the accuracy is low, and the real-time coal cost cannot be accurately reflected. The modeling method is adopted, namely, a quadratic function relation is fitted through the total energy consumption and the power output level, and the method of calculating the idle fuel cost and the marginal fuel cost of the unit by combining the fuel price is combined, however, for most coal-fired power plants in China, as the power plants are in a mixed coal burning state, the influence of the change of the fuel fed into the furnace on the boiler efficiency cannot be ignored, the quadratic function relation curve of the total energy consumption and the power output level is difficult to actually fit, and the model accuracy is low; in addition, the price fluctuation of coal fed into the power plant is large, and the real-time coal cost is difficult to obtain. In addition, the basic conditions of all coal-fired power plants in China are different, and the same set of coal-fired cost calculation method and system cannot be suitable for different coal-fired power plants and are not easy to popularize and implement.
Disclosure of Invention
The invention provides a real-time cost accounting system for coal in a power plant, which is used for acquiring the transportation process and the price of coal types through a transportation coal-related database, determining the first unit price of the coal types, determining the allowable processing cost and an adjustment coefficient according to a processing coal-related database, determining the second unit price, determining the blending coal consumption data of a blending coal blending scheme in the current time period, calculating the real-time cost of the coal based on the second unit price and the coal consumption, effectively improving the accuracy of the calculation of the real-time cost of the coal, and providing a reliable basis for power pricing of the power plant.
The invention provides a real-time cost accounting system for coal combustion in a power plant, which comprises:
a first determination module: determining the current transportation process of different coal types in a power plant and the price of the corresponding coal types in the previous stage based on a transportation coal-fired association database, and determining the first unit price of the corresponding coal types;
a second determination module: determining allowable processing cost of different coal types in the power plant and an adjustment coefficient matched with the allowable processing cost based on a processing coal association database, and processing corresponding first unit price based on the adjustment coefficient to obtain corresponding second unit price;
the power generation coal consumption determining module: determining power generation coal consumption data of different coal blending and burning schemes based on the historical coal blending and burning data and the corresponding historical power generation data;
the coal cost determining module: and according to the scheme of blending coal in the current time period of the power plant, relevant blending coal consumption data are retrieved from all the power generation coal consumption data, and the real-time cost of the coal is calculated by combining the second unit price and the coal consumption of each corresponding coal type in the blending coal consumption data.
Preferably, the first determining module includes:
a transportation determination unit: determining the current transportation route and transportation means of different coal types in the power plant based on the transportation coal correlation database;
road loss determination unit: according to the transportation performance and the current transportation route of transportation means of the same coal type, analyzing the road loss and transportation cost of the corresponding coal type;
loading and unloading loss determining unit: according to the unloading mode of the same coal type, determining loading and unloading loss of the corresponding coal type;
a first unit price determination unit: and determining the first unit price of the corresponding coal type according to the road loss, the transportation cost, the loading and unloading loss and the price of the previous stage of the same coal type.
Preferably, the road loss determination unit includes:
acquiring an information block: acquiring the transportation performance of a transportation tool with the same coal type, wherein the transportation performance comprises the following steps: the quantity of transported coal and the sealing performance;
acquiring current transportation route data of the same coal type, wherein the current transportation route data comprises: the transportation distance and weather change data of the current transportation route;
a first road loss determination block: determining first road loss of the corresponding coal according to the transported coal quantity, the sealing performance, the transport distance and weather change data of the current transport route;
transportation cost determination block: determining transportation cost according to the transportation coal amount and the transportation distance;
the final road loss determination block: and correcting the first road loss based on the reliability of the first road loss obtained by analyzing the historical road loss of the corresponding coal, and determining the final road loss.
Preferably, the second determining module includes:
a machining program determining unit: determining processing programs of different coal types in the power plant according to the processed coal association database;
processing cost and loss determining unit: acquiring processing programs of the same coal type, and determining first processing cost, processing loss and processing loss range of the corresponding processing program based on the flow of each processing program;
first allowable processing cost determination unit: determining a first allowable processing cost of the co-channel process based on a first processing cost of the co-channel process and a first unit price of the processing loss and the corresponding coal;
wherein x is i A first allowable machining cost representing an i-th machining program; a, a i Indicating that the processing amount of the ith processing program is S i Is a first processing cost of (a); s is S i Representing a machining amount corresponding to a first machining cost of an i-th machining program; ΔS i Representing the processing loss of the ith processing program;
allowing the processing cost determination unit to: determining the allowable processing cost of the corresponding coal type according to the first allowable processing cost of all programs of the same coal type;
an adjustment coefficient determination unit: determining an adjustment coefficient of a first allowable processing cost of the same-channel processing program according to the range of the processing loss of the same-channel processing program of the same coal type;
determining an adjustment coefficient that allows the processing costs to match based on the adjustment coefficients of the first allowable processing costs for all programs;
a second unit price determination unit: and processing the corresponding first unit price according to the allowable processing cost and the matched adjustment coefficient, and determining the corresponding second unit price.
Preferably, the processing cost and loss determining unit includes:
and a processing amount determining block: acquiring the same processing program of the same coal type, determining loss materials of the same processing program, and determining loss quantity, processing quantity and processing residual quantity of the same coal type;
a first processing cost determination block: determining a first processing cost corresponding to a processing program according to the loss amount of the loss materials and the processing amount of the same coal type;
processing loss determination block: and determining the processing loss and the processing loss range of the corresponding processing program according to the processing quantity and the processing residual quantity of the same processing program and the same coal type for a plurality of times.
Preferably, the second unit price determining unit includes:
wherein Y is 2 Representing a second unit price for the corresponding coal species; alpha i An adjustment coefficient indicating the i-th machining program; n represents the number of the corresponding coal processing programs; y is Y 1 Representing a first unit price for the corresponding coal type.
Preferably, the power generation coal consumption determining module includes:
historical power generation data acquisition unit: acquiring historical blending coal blending combustion data and corresponding historical power generation data, wherein the blending coal blending combustion data comprises: coal blending proportion and coal blending combustion quantity;
a power generation coal consumption determining unit: determining power generation coal consumption data corresponding to the coal blending and burning scheme according to the coal blending and burning data and the corresponding historical power generation data;
and acquiring power generation coal consumption data of all the blending and burning schemes.
Preferably, the fire coal cost determining module includes:
a first coal consumption data determination unit: acquiring a coal blending and burning scheme of a power plant in a current time period, and calling related first coal blending and burning data from all power generation coal consumption data;
a third unit price determination unit: acquiring second unit price of the first blended coal consumption data corresponding to each coal type, and determining third unit price of the blended coal type based on the blending ratio;
real-time cost calculation unit: and determining the real-time coal consumption according to the coal consumption metering device, and calculating the real-time cost of the coal by combining the first blending coal consumption data and the third unit price.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a block diagram of a real-time cost accounting system for coal combustion in a power plant in an embodiment of the invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
The embodiment of the invention provides a real-time cost accounting system for coal burning in a power plant, which is shown in fig. 1 and comprises:
a first determination module: determining the current transportation process of different coal types in a power plant and the price of the corresponding coal types in the previous stage based on a transportation coal-fired association database, and determining the first unit price of the corresponding coal types;
a second determination module: determining allowable processing cost of different coal types in the power plant and an adjustment coefficient matched with the allowable processing cost based on a processing coal association database, and processing corresponding first unit price based on the adjustment coefficient to obtain corresponding second unit price;
the power generation coal consumption determining module: determining power generation coal consumption data of different coal blending and burning schemes based on the historical coal blending and burning data and the corresponding historical power generation data;
the coal cost determining module: and according to the scheme of blending coal in the current time period of the power plant, relevant blending coal consumption data are retrieved from all the power generation coal consumption data, and the real-time cost of the coal is calculated by combining the second unit price and the coal consumption of each corresponding coal type in the blending coal consumption data.
In this embodiment, the transportation coal association database is set in advance, records information of transportation of various coal types of the power plant from different purchasing areas to the power plant, and includes: the current transportation process refers to information such as a current route from a purchasing area to a power plant of corresponding coal types, the price of the corresponding coal types in the previous stage is based on the price of the corresponding coal types in the current previous stage, and the first unit price is obtained by modifying the price of the corresponding coal types according to transportation cost, transportation loss and loading and unloading loss of the corresponding coal types in the transportation process.
Wherein Y1 represents a first unit price, Y represents a price, S represents a corresponding transportation cost, and C represents a transportation quantity of a transportation means; ΔC 1 Representing corresponding road loss; ΔC 2 Indicating the corresponding loading and unloading losses.
In this embodiment, the processing coal association database is set in advance, data such as processing cost and loss of each processing program experienced by each coal type from raw coal to incineratable coal in the power plant is recorded, the allowable processing cost is obtained by adding the loss material of each processing program experienced by the corresponding coal type and the allowable processing cost of each program determined by the processing loss of the coal type, the adjustment coefficient allowing the processing cost to be matched is obtained by adding the adjustment coefficient corresponding to the first allowable processing cost and the product of the ratio of the corresponding first allowable processing cost to the allowable processing cost, and the second unit price is obtained by adding the product of the first unit price and the adjustment coefficient corresponding to the allowable processing cost of the corresponding coal type.
In this embodiment, the historical blending coal blending combustion data includes: the historical power generation data refer to generated energy corresponding to the historical coal blending data, and the power generation coal consumption data are determined according to the ratio of the historical coal blending data to the corresponding generated energy, for example, the historical coal blending scheme is that the A coal type and the B coal type are blended in a ratio of 2 to 8, the blending amount is 10t, the generated energy is 10000kW/h, and the power generation coal consumption data are 0.001 t/(kW/h).
In this embodiment, the blending coal blending combustion scheme is to perform mixed combustion according to two or more kinds of coal in a certain proportion, blending coal consumption data refers to power generation coal consumption data and the like corresponding to the blending coal blending combustion scheme, coal consumption is total real-time coal consumption determined according to a coal consumption metering device, real-time coal cost is real-time power generation data determined according to real-time coal consumption and first blending coal consumption data, and real-time coal cost is determined according to a ratio of a product of the real-time coal consumption and third unit price to the power generation data, for example, the real-time coal consumption is 1t, the first blending coal consumption data is 0.0001 t/(kW/h), the power generation data is 10000kW/h, the third unit price is 2000 yuan/t, and the real-time coal cost is 0.2 yuan/(kW/h).
The beneficial effects of the technical scheme are as follows: the method comprises the steps of acquiring a transportation process and a price of coal types through a transportation coal-fired correlation database, determining a first unit price of the coal types, determining allowable processing cost and an adjustment coefficient according to the processing coal-fired correlation database, determining a second unit price, determining blending coal consumption data of a blending coal blending scheme in the current time period, calculating the real-time cost of the coal based on the second unit price and the coal consumption, effectively improving the accuracy of the calculation of the real-time cost of the coal, and providing a reliable basis for pricing the electricity price of a power plant.
The embodiment of the invention provides a real-time cost accounting system for coal burning in a power plant, wherein the first determining module comprises:
a transportation determination unit: determining the current transportation route and transportation means of different coal types in the power plant based on the transportation coal correlation database;
road loss determination unit: according to the transportation performance and the current transportation route of transportation means of the same coal type, analyzing the road loss and transportation cost of the corresponding coal type;
loading and unloading loss determining unit: according to the unloading mode of the same coal type, determining loading and unloading loss of the corresponding coal type;
a first unit price determination unit: and determining the first unit price of the corresponding coal type according to the road loss, the transportation cost, the loading and unloading loss and the price of the previous stage of the same coal type.
In this embodiment, the current transportation route refers to a route from the corresponding coal type from the purchasing area to the power plant, and the transportation means refers to transportation means of the corresponding coal type, such as vehicle transportation, train transportation, and the like.
In this embodiment, the transportation performance refers to the sealing performance of the transportation means, the road loss refers to the loss of coal amount due to the sealing performance of the transportation means and weather during transportation of the transportation means, and the transportation cost refers to the use cost of the transportation means and other costs such as highway tolls and the like.
In this embodiment, the unloading mode refers to a mode that a transport vehicle is transported to a power plant for unloading, for example, manual unloading or mechanical unloading, and the loading loss is a loss of coal due to a lack of stock determined according to the unloading mode, and is determined according to loading losses of different unloading modes in history.
The beneficial effects of the technical scheme are as follows: the coal transportation route and transportation means are determined through the transportation coal association database, the road loss and transportation cost are determined, the loading and unloading loss is determined based on the unloading mode, and the first unit price of the coal is determined according to the road loss, the transportation cost, the loading and unloading loss and the price, so that a foundation is laid for the subsequent determination of the second unit price of the coal.
The embodiment of the invention provides a real-time cost accounting system for coal burning in a power plant, wherein the road loss determining unit comprises:
acquiring an information block: acquiring the transportation performance of a transportation tool with the same coal type, wherein the transportation performance comprises the following steps: the quantity of transported coal and the sealing performance;
acquiring current transportation route data of the same coal type, wherein the current transportation route data comprises: the transportation distance and weather change data of the current transportation route;
a first road loss determination block: determining first road loss of the corresponding coal according to the transported coal quantity, the sealing performance, the transport distance and weather change data of the current transport route;
transportation cost determination block: determining transportation cost according to the transportation coal amount and the transportation distance;
the final road loss determination block: and correcting the first road loss based on the reliability of the first road loss obtained by analyzing the historical road loss of the corresponding coal, and determining the final road loss.
In this embodiment, the amount of the transported coal is determined according to the historical amount of the transported vehicle, and the sealing performance is determined according to the transportation mode of the transported vehicle, for example, the train is generally free of shielding, the sealing performance is poor, the car is generally shielded, and the sealing performance is good.
In this embodiment, the transportation distance is obtained based on navigation data, and the weather change data is obtained based on real-time weather change of the transportation route after the transportation is completed.
In this embodiment, the first road loss is determined based on a road loss model that is trained in advance based on the performance of the vehicle and the loss associated with the corresponding weather.
In this embodiment, the transportation cost is determined based on the transportation means being a use cost and other costs, for example, vehicle transportation, a truck transportation of 500 km is 500 yuan, a highway toll is 200 yuan, and a transportation cost is 700 yuan.
In this embodiment, the historical road loss is a road loss occurring according to the same amount of coal of the corresponding historical transportation means in the transportation route, the reliability is determined according to the ratio of the absolute value of the difference between the determined first road loss and the historical road loss to the historical road loss, the ratio is considered reliable within 5%, no correction is performed, the ratio exceeds 5%, and the correction coefficient is determined such that the ratio is less than 5%, and the correction coefficient is generally [0.8,1.2].
The beneficial effects of the technical scheme are as follows: the first road loss and the transportation cost are determined according to the transportation performance and the transportation route data of the transportation means of the coal, the first road loss is corrected according to the historical road loss, the final road loss is determined, and a foundation is laid for the follow-up determination of the first unit price.
The embodiment of the invention provides a real-time cost accounting system for coal burning in a power plant, wherein the second determining module comprises:
a machining program determining unit: determining processing programs of different coal types in the power plant according to the processed coal association database;
processing cost and loss determining unit: acquiring processing programs of the same coal type, and determining first processing cost, processing loss and processing loss range of the corresponding processing program based on the flow of each processing program;
first allowable processing cost determination unit: determining a first allowable processing cost of the co-channel process based on a first processing cost of the co-channel process and a first unit price of the processing loss and the corresponding coal;
wherein x is i A first allowable machining cost representing an i-th machining program; a, a i Indicating that the processing amount of the ith processing program is S i Is a first processing cost of (a); s is S i Representing a machining amount corresponding to a first machining cost of an i-th machining program; ΔS i Representing the processing loss of the ith processing program;
allowing the processing cost determination unit to: determining the allowable processing cost of the corresponding coal type according to the first allowable processing cost of all programs of the same coal type;
an adjustment coefficient determination unit: determining an adjustment coefficient of a first allowable processing cost of the same-channel processing program according to the range of the processing loss of the same-channel processing program of the same coal type;
determining an adjustment coefficient that allows the processing costs to match based on the adjustment coefficients of the first allowable processing costs for all programs;
a second unit price determination unit: and processing the corresponding first unit price according to the allowable processing cost and the matched adjustment coefficient, and determining the corresponding second unit price.
In this embodiment, the processing program refers to various processing programs in the processing of coal types, such as desulfurization, grinding, etc., and processing programs for different coal types are different.
In this embodiment, the flow refers to the process of the processing procedure, for example, the grinding procedure, in which the lump coal is crushed and then ground by the grinder, the first processing cost refers to the cost of materials lost by the processing procedure, for example, the desulfurization process, the cost of reagents lost by chemical desulfurization, the processing loss refers to the difference between the processing amount before the same processing procedure and the processing residual amount after the processing procedure, and is determined by the average value of the multiple differences of the same processing procedure, and the processing loss range refers to the determined range of the maximum value and the minimum value of the multiple differences of the same processing procedure.
In this embodiment, the allowable processing cost is determined from the sum of the first allowable processing costs of all procedures for the same coal type.
In this embodiment, the adjustment coefficient of the first allowable machining cost is a change range of the first allowable machining cost determined according to a machining loss range of the co-channel machining program, and the adjustment coefficient of the first allowable machining cost is determined according to a ratio of the change range of the first allowable machining cost to the first unit price.
In this embodiment, the second unit price is obtained by multiplying the first unit price by the adjustment coefficient.
The beneficial effects of the technical scheme are as follows: the first allowable processing cost of each program is determined by acquiring the processing programs of the same coal type, so that the allowable processing cost of the corresponding coal type is obtained, the adjustment coefficient matched with the allowable processing cost is determined, the first unit price of the corresponding coal type is processed, the second unit price is determined, and the accuracy of the real-time cost of the coal is indirectly improved.
The embodiment of the invention provides a real-time cost accounting system for coal burning in a power plant, wherein the processing cost and loss determining unit comprises:
and a processing amount determining block: acquiring the same processing program of the same coal type, determining loss materials of the same processing program, and determining loss quantity, processing quantity and processing residual quantity of the same coal type;
a first processing cost determination block: determining a first processing cost corresponding to a processing program according to the loss amount of the loss materials and the processing amount of the same coal type;
processing loss determination block: and determining the processing loss and the processing loss range of the corresponding processing program according to the processing quantity and the processing residual quantity of the same processing program and the same coal type for a plurality of times.
In this embodiment, the lost material refers to the material required to be consumed for processing corresponding to the processing program, for example, chemical agent consumed for chemical desulfurization of coal, etc., the lost amount refers to the consumed amount of the lost material for processing corresponding to the amount of coal, for example, the lost amount of the lost material for processing 1 ton of corresponding coal is X, the lost amount is X/ton, the processed amount refers to the amount of coal before processing corresponding to the processing program, and the processed amount refers to the remaining amount of coal after processing corresponding to the processing program.
In this embodiment, the first processing cost is obtained by determining a ratio of a total price of the lost material to the processing amount according to the lost material and a unit price of the corresponding lost material, for example, the lost material is X1, the unit price is a, the processing amount is 1 ton, and the first processing cost is X1X a/ton.
In this example, the machining loss is obtained by averaging the loss of a plurality of times, for example, the machining amount is B1, the machining remaining amount is B2, the loss is (B1-B2)/B1, which means that the machining loss per 1 ton of machining is (B1-B2)/B1, the loss of the other time is (B3-B4)/B3, the machining loss is 1/2 ((B1-B2)/b1+ (B3-B4)/B3), and the machining loss range is a range in which the maximum value and the minimum value of the loss of a plurality of times are determined.
The beneficial effects of the technical scheme are as follows: the first processing cost is determined through the loss materials, loss amount and processing amount of the same processing program of the same coal type, and the processing loss and processing loss range are determined according to the processing amount and the processing residual amount, so that a foundation is laid for the subsequent determination of the second unit price.
The embodiment of the invention provides a real-time cost accounting system for coal burning of a power plant, wherein the second unit price determining unit comprises:
wherein Y is 2 Representing a second unit price for the corresponding coal species; alpha i An adjustment coefficient indicating the i-th machining program; n represents the number of the corresponding coal processing programs; y is Y 1 Representing a first unit price for the corresponding coal type.
The beneficial effects of the technical scheme are as follows: the second unit price is determined through the adjustment coefficient and the first unit price of the corresponding coal processing program, so that the cost price of the corresponding coal is more accurate, and a foundation is laid for the subsequent determination of the real-time cost of the fire coal.
The embodiment of the invention provides a real-time cost accounting system for power plant coal, wherein the power generation coal consumption determining module comprises:
historical power generation data acquisition unit: acquiring historical blending coal blending combustion data and corresponding historical power generation data, wherein the blending coal blending combustion data comprises: coal blending proportion and coal blending combustion quantity;
a power generation coal consumption determining unit: determining power generation coal consumption data corresponding to the coal blending and burning scheme according to the coal blending and burning data and the corresponding historical power generation data;
and acquiring power generation coal consumption data of all the blending and burning schemes.
The beneficial effects of the technical scheme are as follows: the power generation coal consumption data corresponding to the coal blending and burning scheme is determined through the historical coal blending and burning data and the corresponding historical power generation data, so that a foundation is laid for the follow-up determination of the real-time cost of the coal.
The embodiment of the invention provides a real-time cost accounting system for coal burning of a power plant, wherein the coal burning cost determining module comprises:
a first coal consumption data determination unit: acquiring a coal blending and burning scheme of a power plant in a current time period, and calling related first coal blending and burning data from all power generation coal consumption data;
a third unit price determination unit: acquiring second unit price of the first blended coal consumption data corresponding to each coal type, and determining third unit price of the blended coal type based on the blending ratio;
real-time cost calculation unit: and determining the real-time coal consumption according to the coal consumption metering device, and calculating the real-time cost of the coal by combining the first blending coal consumption data and the third unit price.
In this embodiment, the first blending coal consumption data refers to a blending ratio corresponding to the same historical blending coal blending scheme as the blending coal blending scheme in the current time period and corresponding power generation coal consumption data.
In this embodiment of the present invention, the process is performed,
wherein Y3 represents a third unit price; y21 represents a second unit price of the first coal type in the coal blending and burning scheme; beta represents the percentage of the first coal; y22 represents a second unit price of a second coal type in the coal blending combustion scheme; gamma represents the percentage of the second coal.
The beneficial effects of the technical scheme are as follows: the third unit price of the blended coal type is determined by acquiring the blended coal consumption data and the second unit price of the blended coal blending scheme in the current time period, and the real-time cost of the fire coal is calculated according to the real-time coal consumption and the first and third unit prices, so that the accuracy of the calculation of the real-time cost of the fire coal can be improved, and a reliable basis is provided for power pricing of a power plant.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A real-time cost accounting system for coal fired in a power plant, comprising:
a first determination module: determining the current transportation process of different coal types in a power plant and the price of the corresponding coal types in the previous stage based on a transportation coal-fired association database, and determining the first unit price of the corresponding coal types;
a second determination module: determining allowable processing cost of different coal types in the power plant and an adjustment coefficient matched with the allowable processing cost based on a processing coal association database, and processing corresponding first unit price based on the adjustment coefficient to obtain corresponding second unit price;
the power generation coal consumption determining module: determining power generation coal consumption data of different coal blending and burning schemes based on the historical coal blending and burning data and the corresponding historical power generation data;
the coal cost determining module: and according to the scheme of blending coal in the current time period of the power plant, relevant blending coal consumption data are retrieved from all the power generation coal consumption data, and the real-time cost of the coal is calculated by combining the second unit price and the coal consumption of each corresponding coal type in the blending coal consumption data.
2. The power plant coal-fired real-time cost accounting system of claim 1, wherein the first determination module comprises:
a transportation determination unit: determining the current transportation route and transportation means of different coal types in the power plant based on the transportation coal correlation database;
road loss determination unit: according to the transportation performance and the current transportation route of transportation means of the same coal type, analyzing the road loss and transportation cost of the corresponding coal type;
loading and unloading loss determining unit: according to the unloading mode of the same coal type, determining loading and unloading loss of the corresponding coal type;
a first unit price determination unit: and determining the first unit price of the corresponding coal type according to the road loss, the transportation cost, the loading and unloading loss and the price of the previous stage of the same coal type.
3. The power plant fire coal real-time cost accounting system according to claim 2, wherein the road loss determination unit includes:
acquiring an information block: acquiring the transportation performance of a transportation tool with the same coal type, wherein the transportation performance comprises the following steps: the quantity of transported coal and the sealing performance;
acquiring current transportation route data of the same coal type, wherein the current transportation route data comprises: the transportation distance and weather change data of the current transportation route;
a first road loss determination block: determining first road loss of the corresponding coal according to the transported coal quantity, the sealing performance, the transport distance and weather change data of the current transport route;
transportation cost determination block: determining transportation cost according to the transportation coal amount and the transportation distance;
the final road loss determination block: and correcting the first road loss based on the reliability of the first road loss obtained by analyzing the historical road loss of the corresponding coal, and determining the final road loss.
4. The power plant coal-fired real-time cost accounting system of claim 1, wherein the second determination module comprises:
a machining program determining unit: determining processing programs of different coal types in the power plant according to the processed coal association database;
processing cost and loss determining unit: acquiring processing programs of the same coal type, and determining first processing cost, processing loss and processing loss range of the corresponding processing program based on the flow of each processing program;
first allowable processing cost determination unit: determining a first allowable processing cost of the co-channel process based on a first processing cost of the co-channel process and a first unit price of the processing loss and the corresponding coal;
wherein x is i A first allowable machining cost representing an i-th machining program; a, a i Indicating that the processing amount of the ith processing program is S i Is a first processing cost of (a); s is S i Representing a machining amount corresponding to a first machining cost of an i-th machining program; ΔS i Representing the processing loss of the ith processing program;
allowing the processing cost determination unit to: determining the allowable processing cost of the corresponding coal type according to the first allowable processing cost of all programs of the same coal type;
an adjustment coefficient determination unit: determining an adjustment coefficient of a first allowable processing cost of the same-channel processing program according to the range of the processing loss of the same-channel processing program of the same coal type;
determining an adjustment coefficient that allows the processing costs to match based on the adjustment coefficients of the first allowable processing costs for all programs;
a second unit price determination unit: and processing the corresponding first unit price according to the allowable processing cost and the matched adjustment coefficient, and determining the corresponding second unit price.
5. The real-time cost accounting system for power plant fire coal of claim 4, wherein said processing cost and loss determination unit comprises:
and a processing amount determining block: acquiring the same processing program of the same coal type, determining loss materials of the same processing program, and determining loss quantity, processing quantity and processing residual quantity of the same coal type;
a first processing cost determination block: determining a first processing cost corresponding to a processing program according to the loss amount of the loss materials and the processing amount of the same coal type;
processing loss determination block: and determining the processing loss and the processing loss range of the corresponding processing program according to the processing quantity and the processing residual quantity of the same processing program and the same coal type for a plurality of times.
6. The power plant fire coal real-time cost accounting system according to claim 4, wherein the second unit price determining unit includes:
wherein Y is 2 Representing a second unit price for the corresponding coal species; alpha i An adjustment coefficient indicating the i-th machining program; n represents the number of the corresponding coal processing programs; y is Y 1 Representing a first unit price for the corresponding coal type.
7. The power plant coal-fired real-time cost accounting system of claim 1, wherein the power generation coal consumption determination module comprises:
historical power generation data acquisition unit: acquiring historical blending coal blending combustion data and corresponding historical power generation data, wherein the blending coal blending combustion data comprises: coal blending proportion and coal blending combustion quantity;
a power generation coal consumption determining unit: determining power generation coal consumption data corresponding to the coal blending and burning scheme according to the coal blending and burning data and the corresponding historical power generation data;
and acquiring power generation coal consumption data of all the blending and burning schemes.
8. The power plant coal-fired real-time cost accounting system of claim 1, wherein the coal-fired cost determination module comprises:
a first coal consumption data determination unit: acquiring a coal blending and burning scheme of a power plant in a current time period, and calling related first coal blending and burning data from all power generation coal consumption data;
a third unit price determination unit: acquiring second unit price of the first blended coal consumption data corresponding to each coal type, and determining third unit price of the blended coal type based on the blending ratio;
real-time cost calculation unit: and determining the real-time coal consumption according to the coal consumption metering device, and calculating the real-time cost of the coal by combining the first blending coal consumption data and the third unit price.
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| CN117391240B (en) * | 2023-10-07 | 2024-05-03 | 华北电力大学 | Thermal power generation and coal combustion blending scheme optimization method based on similarity calculation |
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