Coal-fired unit evaluation method and device, electronic equipment and storage medium

Abstract

The invention discloses a coal-fired unit evaluation method and device, electronic equipment and a storage medium, and belongs to the field of coal-fired power generation, and the method comprises the steps: obtaining the coal consumption, ammonia gas consumption and power generation power of a coal-fired unit at each moment under different time scales; calculating and generating corresponding coal input heat and ammonia input heat according to the coal consumption and the ammonia consumption at each moment and a preset lower calorific value of the coal consumption and the ammonia consumption; calculating the power generation efficiency at each moment by combining the power generation power; counting the average value of the power generation efficiency at each moment under different time scales to obtain the power generation efficiency of the corresponding time scale; and finally, evaluating the performance of the coal-fired unit according to the power generation efficiency under different time scales. By implementing the method, the problem that a coal-fired unit evaluation method in the prior art is difficult to reflect the real performance of the unit in different operation states can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal-fired power generation, and particularly to an evaluation method, device, electronic device and storage medium for a coal-fired unit. Background Art

[0002] As an important part of the traditional power system, coal-fired units still occupy an important position in the global power supply. Although with the rapid development of new energy technologies and the promotion of carbon emission reduction policies, countries are actively adjusting their energy structures, coal-fired units still play a fundamental guarantee role in the power system due to their stable power generation capacity, strong load regulation ability and support for grid frequency. In the case of large power load fluctuations, coal-fired units often undertake the base load power generation task and provide necessary standby capacity during emergency grid dispatching.

[0003] However, when evaluating the operating performance of coal-fired units, existing methods mostly rely on operating data at a single time scale. This evaluation method based on macroscopic statistical data is difficult to reflect the true performance of the unit under different operating states. Especially in the case of frequent load fluctuations and dynamic adjustment of operating strategies, the evaluation results may have significant deviations from the actual energy efficiency and environmental performance of the unit, thus affecting the scientific formulation of operation optimization strategies and the effectiveness verification of technical transformation plans. Summary of the Invention

[0004] Embodiments of the present invention provide an evaluation method, device, electronic device and storage medium for a coal-fired unit, which can solve the problem that the existing evaluation method for coal-fired units is difficult to reflect the true performance of the unit under different operating states.

[0005] An embodiment of the present invention provides an evaluation method for a coal-fired unit, including: obtaining the coal consumption, ammonia consumption and power generation at each moment of the coal-fired unit at different time scales, where the time scales include historical typical days, historical typical months and historical typical years;

[0006] For each moment, according to the coal consumption at the current moment and the preset lower calorific value of coal, calculate and generate the coal input heat at the current moment; according to the ammonia consumption at the current moment and the preset lower calorific value of ammonia, calculate and generate the ammonia input heat at the current moment; according to the coal input heat, ammonia input heat and power generation at the current moment, calculate and generate the power generation efficiency at the current moment;

[0007] Calculate the average value of the power generation efficiency at each moment under different time scales to generate the power generation efficiency of the coal-fired unit under different time scales;

[0008] Evaluate the performance of the coal-fired unit according to the power generation efficiency of the coal-fired unit under different time scales.

[0009] Further, the evaluation method for the coal-fired unit further includes:

[0010] Calculating and generating evaluation scores for the coal-fired unit at different time scales according to the power generation efficiency, preset carbon emission intensity, preset power generation cost, and preset weight coefficient of the coal-fired unit at different time scales;

[0011] Conducting a comprehensive evaluation of the coal-fired unit according to the comprehensive evaluation values of the coal-fired unit at different time scales.

[0012] Further, the preset carbon emission intensity is generated in the following manner:

[0013] Calculating and generating the carbon dioxide emissions at each moment under different time scales according to the coal consumption at each moment of the coal-fired unit under different time scales and the preset coal carbon emission factor;

[0014] Calculating and generating the carbon emission intensity at each moment according to the carbon dioxide emissions at each moment and the power generation power at each moment;

[0015] Calculating the average value of the carbon emission intensity at each moment under different time scales to generate the carbon emission intensity of the coal-fired unit under different time scales.

[0016] Further, the preset power generation cost is generated in the following manner:

[0017] Obtaining the unit price of coal and the unit price of ammonia at each moment of the coal-fired unit under different time scales;

[0018] For each moment, calculating and generating the coal power generation cost at the current moment according to the coal consumption at the current moment and the unit price of coal at the current moment; calculating and generating the ammonia-blended power generation cost at the current moment according to the unit price of ammonia at the current moment, the unit price of coal at the current moment, the preset lower calorific value of ammonia, the preset lower calorific value of coal, and the ammonia consumption at the current moment; calculating and generating the carbon emission cost according to the preset carbon quota coefficient, the preset coal carbon emission factor, the preset carbon emission reference coefficient of the power generation power, and the power generation power at the current moment; calculating and generating the power generation cost at the current moment according to the coal power generation cost, the ammonia-blended power generation cost, and the carbon emission cost;

[0019] Calculating the average value of the power generation cost at each moment under different time scales according to the power generation cost at each moment to generate the power generation cost of the coal-fired unit under different time scales.

[0020] Further, the preset weight coefficient is determined in the following manner:

[0021] Construct a comparison matrix among power generation efficiency, carbon emission intensity, and power generation cost based on a preset relative importance scale according to power generation efficiency, carbon emission intensity, and power generation cost;

[0022] Calculate and generate the weight coefficients of power generation efficiency, carbon emission intensity, and power generation cost based on the geometric mean algorithm according to the comparison matrix.

[0023] Furthermore, calculate the power generation efficiency at a moment through the following formula:

[0024]

[0025] where η(t) is the power generation efficiency at time t; P(t) is the power generation power at time t; Q coal (t) is the coal consumption at time t; L coal is the lower calorific value of coal; is the ammonia consumption at time t; is the lower calorific value of coal.

[0026] Furthermore, calculate the carbon emission intensity at a moment through the following formula:

[0027]

[0028] where E(t) is the carbon emission intensity at time t; P(t) is the power generation power at time t; Q coal (t) is the coal consumption at time t; ε1 is the preset carbon emission factor for coal combustion.

[0029] Based on the above method embodiment, the present invention correspondingly provides an apparatus embodiment.

[0030] An embodiment of the present invention provides an evaluation apparatus for a coal-fired unit, including: a data acquisition module, a power generation efficiency determination module, and a performance evaluation module;

[0031] The data acquisition module is configured to acquire the coal consumption, ammonia consumption, and power generation power at each moment of the coal-fired unit at different time scales; wherein, the time scales include historical typical days, historical typical months, and historical typical years;

[0032] The power generation efficiency determination module is used to calculate and generate the coal input heat at the current moment for each moment according to the coal consumption at the current moment and the preset lower calorific value of coal; calculate and generate the ammonia input heat at the current moment according to the ammonia consumption at the current moment and the preset lower calorific value of ammonia; calculate and generate the power generation efficiency at the current moment according to the coal input heat, ammonia input heat and power generation power at the current moment; calculate the average value of the power generation efficiency at each moment under different time scales, and generate the power generation efficiency of the coal-fired unit under different time scales.

[0033] The performance evaluation module is used to evaluate the performance of the coal-fired unit according to the power generation efficiency of the coal-fired unit under different time scales.

[0034] Based on the above method item embodiments, the present invention correspondingly provides an electronic device item embodiment.

[0035] An embodiment of the present invention provides an electronic device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the evaluation method of the coal-fired unit described in any one of the above method item embodiments is implemented.

[0036] Based on the above method item embodiments, the present invention correspondingly provides a storage medium item embodiment.

[0037] An embodiment of the present invention provides a storage medium, on which a computer program is stored. When the computer program runs, the device where the storage medium is located is controlled to execute the evaluation method of the coal-fired unit described in any one of the above method item embodiments.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] An embodiment of the present invention provides an evaluation method, device, electronic device and storage medium for a coal-fired unit. The method obtains the coal consumption, ammonia consumption and power generation power of the coal-fired unit at each moment under different time scales. On this basis, the input heat at each moment is calculated by combining the lower calorific values of coal and ammonia, and the power generation efficiency is dynamically calculated based on the input heat and the power generation power. This method can not only reflect the real-time change of the power generation efficiency of the coal-fired unit under the condition of ammonia blending operation, but also eliminate the deviation that may be brought by simply relying on the coal consumption rate or single-moment data.

[0040] In addition, the present invention calculates the average power generation efficiency at different time scales to form a multi-time scale power generation efficiency index for coal-fired units, comprehensively evaluating the operating performance of the units from daily, monthly, and even annual scales. Compared with the traditional single-time scale analysis, this evaluation method can more accurately reflect the long-term operating state and its fluctuations of coal-fired units under ammonia blending conditions, providing a scientific basis for unit scheduling optimization, fuel adjustment, and operation and maintenance. At the same time, considering the energy input difference brought by ammonia substitution for coal, this solution fully integrates the input heat of ammonia and coal when calculating the power generation efficiency, avoiding the defect of ignoring the impact of fuel composition changes on unit performance and ensuring the reliability of the evaluation results. Starting from multiple time scales, the present invention comprehensively considers the input heat of coal and ammonia and their impact on power generation efficiency, realizing the scientific evaluation of coal-fired units under ammonia blending operation and providing important technical support for improving unit operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 FIG. is a schematic flow chart of an evaluation method for a coal-fired unit provided by an embodiment of the present invention.

[0042] Figure 2 FIG. is a schematic structural diagram of an evaluation device for a coal-fired unit provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] As Figure 1 shown, to solve the problem that the existing evaluation methods for coal-fired units are difficult to reflect the true performance of the units in different operating states, an embodiment of the present invention provides an evaluation method for coal-fired units, which at least includes the following steps:

[0045] Step S1: Obtain the coal consumption, ammonia consumption, and power generation power at each moment of the coal-fired unit at different time scales; wherein, the time scales include historical typical days, historical typical months, and historical typical years;

[0046] It is understandable that the coal consumption, ammonia consumption, and power generation at each moment of the coal-fired unit under different time scales are obtained; wherein, the time scales include historical typical days, historical typical months, and historical typical years, which are used to comprehensively reflect the energy consumption and power generation characteristics of the coal-fired unit under short-term, medium-term, and long-term operating conditions. By dividing different time scales, not only can the fluctuations of the unit during daily operation be captured, but also the impact of seasonal changes or long-term operation cumulative effects on the unit performance can be revealed, thus laying a foundation for subsequent power generation efficiency calculation and unit performance evaluation.

[0047] Step S2: For each moment, according to the coal consumption at the current moment and the preset lower calorific value of coal, calculate and generate the coal input heat at the current moment; according to the ammonia consumption at the current moment and the preset lower calorific value of ammonia, calculate and generate the ammonia input heat at the current moment; according to the coal input heat, ammonia input heat, and power generation at the current moment, calculate and generate the power generation efficiency at the current moment;

[0048] In a preferred embodiment, the power generation efficiency at a moment is calculated by the following formula:

[0049]

[0050] wherein, η(t) is the power generation efficiency at time t; P(t) is the power generation at time t; Q coal (t) is the coal consumption at time t; L coal is the lower calorific value of coal; is the ammonia consumption at time t; is the lower calorific value of ammonia.

[0051] It is understandable that for each moment, based on the real-time operation data of the coal-fired unit, the coal consumption at the current moment is obtained, and combined with the preset lower calorific value of coal, the coal input heat at this moment is calculated to reflect the available energy released during the coal combustion process. At the same time, the ammonia consumption at the current moment is obtained, and combined with the preset lower calorific value of ammonia, the ammonia input heat at this moment is calculated to characterize the thermal energy contributed by ammonia replacing part of the coal combustion. Subsequently, according to the coal input heat, ammonia input heat, and the real-time power generation of the unit at the current moment, the power generation efficiency at this moment is calculated, so as to quantify the ability of the coal-fired unit to convert the input thermal energy into electrical energy under the condition of ammonia-doped combustion at this moment. This calculation method can dynamically reflect the energy conversion level of the unit under different time scales and provide accurate data support for further evaluating its comprehensive performance.

[0052] Step S3: Calculate the average value of the power generation efficiency at each moment under different time scales to generate the power generation efficiency of the coal-fired unit under different time scales;

[0053] It is understandable that based on the power generation efficiency data calculated at each moment in step S2, the power generation efficiency of the coal-fired unit is statistically analyzed according to different time scales. The time scales include historical typical days, historical typical months, and historical typical years. At each time scale, the power generation efficiency values at all moments within the corresponding time range are extracted, and their arithmetic mean is calculated, thereby generating the power generation efficiency of the coal-fired unit at different time scales. This step can comprehensively reflect the energy conversion level of the coal-fired unit during short-term, periodic, and annual operations, eliminate the influence of the operation state fluctuation at a single moment on the evaluation result, and thus provide a more representative index for subsequent performance evaluation.

[0054] Step S4: Evaluate the performance of the coal-fired unit according to the power generation efficiency of the coal-fired unit at different time scales.

[0055] It is understandable that according to the power generation efficiency calculated for the coal-fired unit at different time scales, the performance of the unit can be accurately evaluated on a time-scale basis. Specifically, at different time scales such as daily, monthly, and annual, the power generation efficiency at each moment is calculated, and the average value of the power generation efficiency at each time scale is obtained through statistical analysis. On the daily scale, the power generation efficiency reflects the short-term operation of the unit, including the influence of factors such as load fluctuation and instantaneous fuel combustion state, which helps to identify the fluctuation characteristics of the unit during daily operation; on the monthly scale, the power generation efficiency can reveal the phased performance of the unit, reflecting the influence of seasonal changes, equipment wear, and operation strategy adjustment on the unit performance; on the annual scale, the power generation efficiency reflects the long-term operation state of the unit, reflecting the overall fuel utilization level and energy efficiency, and revealing the influence brought by long-term factors such as equipment aging and operation and maintenance.

[0056] By evaluating the power generation efficiency on a time-scale basis, the operation status of the unit at different time spans can be diagnosed more carefully, providing a scientific basis for subsequent precise optimization control, operation strategy adjustment, and equipment maintenance. This method can not only dynamically track the energy efficiency change of the unit but also discover potential performance bottlenecks at a specific time scale, thereby more specifically improving the operation level of the coal-fired unit.

[0057] In a specific embodiment, the evaluation method for the coal-fired unit further includes: calculating and generating an evaluation score for the coal-fired unit at different time scales according to the power generation efficiency, carbon emission intensity, power generation cost, and a preset weight coefficient of the coal-fired unit at different time scales;

[0058] Comprehensively evaluate the coal-fired unit according to the comprehensive evaluation value of the coal-fired unit at different time scales.

[0059] It is understandable that this solution selects power generation efficiency, carbon emission intensity, and power generation cost as the core parameters for the comprehensive evaluation of coal-fired power units, which has significant beneficial effects. Power generation efficiency directly reflects the ability of a coal-fired power unit to convert fuel heat energy into electrical energy and is a key indicator for measuring the technical performance of the unit. Improving power generation efficiency means higher energy utilization efficiency, which not only helps to improve the technical performance of the unit but also reduces fuel consumption under the same power generation volume, thereby indirectly reducing carbon emissions and power generation costs. Carbon emission intensity measures the amount of carbon dioxide emissions per unit of electrical energy generated during the power generation process of a coal-fired power unit and is an important parameter reflecting the environmental impact of the unit. Incorporating carbon emission intensity into the evaluation system helps to quantify the contribution of ammonia-blended power generation to emissions reduction. Power generation cost reflects the economic viability of the operation of a coal-fired power unit, including fuel costs (coal, ammonia, etc.) and carbon emission costs, etc. Through the quantitative analysis of power generation costs, the economic feasibility of ammonia-blended power generation can be comprehensively evaluated, providing theoretical support for optimizing the ammonia blending ratio while controlling operating costs. Considering the three parameters of power generation efficiency, carbon emission intensity, and power generation cost comprehensively and assigning preset weight coefficients can more comprehensively reflect the technical, economic, and environmental performance of coal-fired power units at different time scales, avoiding one-sidedness caused by a single parameter, and providing a scientific and objective evaluation basis for unit operation optimization and policy formulation. This evaluation method promotes the balanced development of economy and environmental protection of coal-fired power units while achieving energy conservation and carbon reduction.

[0060] Exemplarily, the evaluation scores at different time scales are calculated through the following formula:

[0061]

[0062] where S k is the evaluation score of the coal-fired power unit at time scale k; η k is the power generation efficiency at time scale k; is the carbon emission intensity at time scale k; C total，k is the power generation cost at time scale k; w1 is the weight coefficient of the power generation efficiency at time scale k; w2 is the weight coefficient of the carbon emission intensity at time scale k; w3 is the weight coefficient of the power generation cost at time scale k.

[0063] In an optional embodiment, the preset carbon emission intensity is generated in the following manner:

[0064] According to the coal consumption of the coal-fired power unit at each moment under different time scales and the preset coal carbon emission factor, the carbon dioxide emissions at each moment under different time scales are calculated and generated;

[0065] According to the carbon dioxide emissions at each moment and the power generation power at each moment, the carbon emission intensity at each moment is calculated and generated;

[0066] Calculate the average carbon emission intensity at each moment under different time scales to generate the carbon emission intensity of the coal-fired unit under different time scales.

[0067] Exemplarily, the carbon emission intensity at a moment is calculated by the following formula:

[0068]

[0069] where E(t) is the carbon emission intensity at time t; P(t) is the power generation power at time t; Q coal (t) is the coal consumption at time t; ε1 is the preset coal carbon emission factor.

[0070] In a preferred embodiment, the preset power generation cost is generated in the following manner:

[0071] Obtain the unit price of coal and the unit price of ammonia at each moment of the coal-fired unit under different time scales;

[0072] For each moment, according to the coal consumption at the current moment and the unit price of coal at the current moment, calculate and generate the coal power generation cost at the current moment; according to the unit price of ammonia at the current moment, the unit price of coal at the current moment, the preset low calorific value of ammonia, the preset low calorific value of coal, and the ammonia consumption at the current moment, calculate and generate the ammonia-blended power generation cost at the current moment; according to the preset carbon quota coefficient, the preset coal carbon emission factor, the preset carbon emission reference coefficient of power generation power, and the power generation power at the current moment, calculate and generate the carbon emission cost; according to the coal power generation cost, the ammonia-blended power generation cost, and the carbon emission cost, calculate and generate the power generation cost at the current moment;

[0073] According to the power generation cost at each moment, calculate the average value of the power generation cost at each moment under different time scales to generate the power generation cost of the coal-fired unit under different time scales.

[0074] Exemplarily, the coal power generation cost at a moment is calculated by the following formula:

[0075] C coal (t) = π coal (t) · Q coal (t)

[0076] where C coal (t) is the coal power generation cost at time t; π coal (t) is the unit price of coal at time t; Q coal (t) is the coal consumption at time t.

[0077] Exemplarily, the ammonia-blended power generation cost at a moment is calculated by the following formula:

[0078]

[0079] Among them, is the cost of ammonia-blended power generation at time t; is the unit price of ammonia at time t; is the ammonia consumption at time t; π coal (t) is the unit price of coal at time t; Q coal (t) is the coal consumption at time t; L coal is the lower calorific value of coal; is the lower calorific value of coal.

[0080] It should be noted that the first term in the formula represents the cost generated by directly using ammonia at the current moment, that is, the product of the unit price of ammonia and the ammonia consumption .

[0081] The second term in the formula represents the cost saved by substituting coal due to ammonia blending. Specifically, is the amount of ammonia used at the current moment, and L coal represent the lower calorific values of ammonia and coal respectively. By the ratio of the two, the ammonia consumption can be converted into an equivalent coal substitution amount, and then multiplied by the current unit price of coal π coal (t) to obtain the corresponding coal cost savings.

[0082] The ammonia-blended power generation cost formula reflects the dual impact of ammonia-blending technology on power generation cost: on the one hand, using ammonia itself generates costs; on the other hand, by blending ammonia, part of the coal can be substituted, thereby reducing the coal cost. This formula quantifies and synthesizes the two to obtain the net impact of ammonia blending on the overall power generation cost at the current moment.

[0083] Exemplarily, the carbon emission cost at a certain moment is calculated by the following formula:

[0084]

[0085] Among them, is the carbon emission cost at time t; λ is the preset carbon quota coefficient; Q coal (t) is the coal consumption at time t; P(t) is the power generation power at time t; ε1 is the preset coal combustion carbon emission factor; ε2 is the preset power generation power carbon emission reference coefficient.

[0086] It should be noted that the term ε1Q coal (t) represents the actual carbon dioxide emissions generated by coal combustion at the current moment, where ε1 is the preset coal combustion carbon emission factor (i.e., the amount of CO2 generated per unit of coal combustion), Q coal$(t)$ is the coal consumption at the current moment.

[0087] The term $\varepsilon_2P(t)$ represents the carbon dioxide emissions under the reference or baseline state, which is calculated by multiplying the power generation $P(t)$ at the current moment by a carbon emission reference coefficient $\varepsilon_2$ for power generation (usually representing the CO2 emissions corresponding to a unit of power generation under a certain optimal or standard state).

[0088] $\lambda$ is a preset carbon quota coefficient, which reflects the economic cost or carbon price corresponding to a unit of carbon dioxide emissions. Overall, the formula calculates the difference between the actual emissions and the reference emissions, and multiplies this difference by the carbon quota coefficient to obtain the carbon emission cost at the current moment. If the actual emissions are higher than the reference level, this difference is positive, indicating that the corresponding carbon trading cost needs to be paid; otherwise, it may represent emissions below the baseline level. Through this formula, the carbon emission economic burden of a coal-fired power unit during operation can be quantified, providing a basis for optimizing combustion technology and reducing environmental impacts.

[0089] Exemplarily, the power generation cost at a moment is calculated by the following formula:

[0090]

[0091] where $C$ total $(t)$ is the power generation cost at time $t$; $C$ coal $(t)$ is the coal power generation cost at time $t$; is the ammonia-blended power generation cost at time $t$; is the carbon emission cost at time $t$.

[0092] In a preferred embodiment, the preset weight coefficient is determined in the following manner:

[0093] According to the power generation efficiency, carbon emission intensity, and power generation cost, based on a preset relative importance scale, a comparison matrix between the power generation efficiency, carbon emission intensity, and power generation cost is constructed;

[0094] According to the comparison matrix, based on the geometric mean algorithm, the weight coefficients of the power generation efficiency, carbon emission intensity, and power generation cost are calculated and generated.

[0095] Specifically, based on the importance of the three evaluation indicators of power generation efficiency, carbon emission intensity, and power generation cost, a comparison matrix among the three is constructed based on a preset relative importance scale; subsequently, the geometric mean method is used to calculate the relative weights of each indicator, and the rationality of the matrix is verified through a consistency test. Finally, the weight coefficients of the power generation efficiency, carbon emission intensity, and power generation cost are obtained, laying a foundation for the comprehensive evaluation of ammonia-blended power generation in coal-fired power units.

[0096] In addition, in order to eliminate the impact of unit inconsistency among power generation efficiency, carbon emission intensity, and power generation cost at different time scales, this solution performs dimensionless processing on each item of data. Among them, for variables where the larger the value, the better the effect, such as power generation efficiency, the range standardization method is used for processing:

[0097]

[0098] In the formula, X and X′ respectively represent the power generation efficiency before and after dimensionless processing, and X max and X min are respectively the maximum and minimum values of the power generation efficiency before dimensionless processing.

[0099] For variables where the smaller the value, the better the effect, such as carbon emission intensity and power generation cost, the reverse range standardization method is used for processing:

[0100]

[0101] In the formula, Y and Y′ respectively represent the carbon emission intensity or power generation cost before and after dimensionless processing, and Y max and Y min are respectively the maximum and minimum values before dimensionless processing.

[0102] Based on the above method item embodiments, the present invention correspondingly provides device item embodiments.

[0103] As Figure 2 shown, an embodiment of the present invention provides an evaluation device for a coal-fired unit, including: a data acquisition module, a power generation efficiency determination module, and a performance evaluation module;

[0104] The data acquisition module is used to acquire the coal consumption, ammonia consumption, and power generation power at each moment of the coal-fired unit at different time scales; wherein, the time scales include historical typical days, historical typical months, and historical typical years;

[0105] The power generation efficiency determination module is used for each moment to calculate and generate the coal input heat at the current moment according to the coal consumption at the current moment and the preset low calorific value of coal; calculate and generate the ammonia input heat at the current moment according to the ammonia consumption at the current moment and the preset low calorific value of ammonia; calculate and generate the power generation efficiency at the current moment according to the coal input heat, ammonia input heat, and power generation power at the current moment; calculate the average value of the power generation efficiency at each moment under different time scales to generate the power generation efficiency of the coal-fired unit under different time scales;

[0106] The performance evaluation module is used to evaluate the performance of the coal-fired unit according to the power generation efficiency of the coal-fired unit under different time scales.

[0107] It should be noted that the embodiments of the devices described above correspond to the above embodiments of the present invention and can implement the evaluation method of the coal-fired power unit described in any one of the above of the present invention. In addition, the embodiments of the above devices are merely illustrative. The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the attached drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that they have a communication connection, which can be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0108] Based on the above method embodiments of the present invention, a corresponding embodiment of an electronic device is provided.

[0109] An embodiment of the present invention provides an electronic device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the evaluation method of the coal-fired power unit described in any one of the present invention, or when the processor executes the computer program, it implements the functions of each module in the above device embodiments.

[0110] Exemplarily, the computer program can be divided into one or more modules. The one or more modules are stored in the memory and executed by the processor to complete the present invention. The one or more modules can be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the terminal device.

[0111] The terminal device can be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The terminal device may include, but is not limited to, a processor and a memory.

[0112] The so-called processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The processor is the control center of the terminal device, and connects various parts of the entire terminal device through various interfaces and circuits.

[0113] The memory can be used to store the computer program and / or module. The processor realizes various functions of the terminal device by running or executing the computer program and / or module stored in the memory, and by calling the data stored in the memory. The memory mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function, etc.; the data storage area can store data created according to the use of the mobile phone, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, Flash Card, at least one magnetic disk storage device, flash device, or other volatile solid-state storage devices.

[0114] Based on the above method item embodiments, the present invention correspondingly provides storage medium item embodiments;

[0115] Another embodiment of the present invention provides a storage medium. The storage medium includes a stored computer program. When the computer program runs, it controls the device where the storage medium is located to execute any one of the above-mentioned evaluation methods for coal-fired generating units of the present invention.

[0116] Among them, the above storage medium is a computer-readable storage medium, and the computer program includes computer program code, which can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the content included in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0117] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0118] The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. An evaluation method for a coal-fired unit, characterized in that, Including: Obtain the coal consumption, ammonia consumption, and power generation power of a coal-fired unit at each moment under different time scales; wherein, the time scales include historical typical days, historical typical months, and historical typical years; For each moment, calculate and generate the coal input heat at the current moment according to the coal consumption at the current moment and the preset low calorific value of coal; calculate and generate the ammonia input heat at the current moment according to the ammonia consumption at the current moment and the preset low calorific value of ammonia; calculate and generate the power generation efficiency at the current moment according to the coal input heat, ammonia input heat, and power generation power at the current moment; Calculate the average value of the power generation efficiency at each moment under different time scales to generate the power generation efficiency of the coal-fired unit under different time scales; Evaluate the performance of the coal-fired unit according to the power generation efficiency of the coal-fired unit under different time scales.

2. The evaluation method of the coal-fired unit according to claim 1, characterized in that, Also including: Calculate and generate the evaluation score of the coal-fired unit under different time scales according to the power generation efficiency of the coal-fired unit under different time scales, the preset carbon emission intensity, the preset power generation cost, and the preset weight coefficient; Comprehensively evaluate the coal-fired unit according to the comprehensive evaluation value of the coal-fired unit under different time scales.

3. The evaluation method of the coal-fired unit according to claim 2, characterized in that Generate the preset carbon emission intensity through the following method: Calculate and generate the carbon dioxide emissions at each moment under different time scales according to the coal consumption at each moment of the coal-fired unit under different time scales and the preset coal carbon emission factor; Calculate and generate the carbon emission intensity at each moment according to the carbon dioxide emissions at each moment and the power generation power at each moment; Calculate the average value of the carbon emission intensity at each moment under different time scales to generate the carbon emission intensity of the coal-fired unit under different time scales.

4. The evaluation method of the coal-fired unit according to claim 2, wherein, Generate the preset power generation cost through the following method: Obtain the unit price of coal and the unit price of ammonia at each moment of the coal-fired unit under different time scales; For each moment, calculate and generate the coal power generation cost at the current moment according to the coal consumption at the current moment and the unit price of coal at the current moment; calculate and generate the ammonia-blended power generation cost at the current moment according to the unit price of ammonia at the current moment, the unit price of coal at the current moment, the preset low calorific value of ammonia, the preset low calorific value of coal, and the ammonia consumption at the current moment; Calculate and generate the carbon emission cost according to the preset carbon quota coefficient, the preset coal carbon emission factor, the preset power generation power carbon emission reference coefficient, and the power generation power at the current moment; calculate and generate the power generation cost at the current moment according to the coal power generation cost, the ammonia-blended power generation cost, and the carbon emission cost; Calculate the average value of the power generation cost at each moment under different time scales according to the power generation cost at each moment to generate the power generation cost of the coal-fired unit under different time scales.

5. The evaluation method of the coal-fired unit according to claim 2, wherein, Determine the preset weight coefficient through the following method: Construct a comparison matrix among the power generation efficiency, carbon emission intensity, and power generation cost based on the preset relative importance scale according to the power generation efficiency, carbon emission intensity, and power generation cost; Calculate and generate the weight coefficients of the power generation efficiency, carbon emission intensity, and power generation cost based on the geometric mean algorithm according to the comparison matrix.

6. The evaluation method of the coal-fired unit according to claim 5, characterized in that Calculate the power generation efficiency at a moment through the following formula: Among them, η(t) is the power generation efficiency at time t; P(t) is the power generation power at time t; Q coal (t) is the coal consumption at time t; L coal is the lower calorific value of coal; is the ammonia consumption at time t; is the lower calorific value of coal.

7. The evaluation method of the coal-fired unit according to claim 6, wherein, Calculate the carbon emission intensity at a moment through the following formula: Among them, E(t) is the carbon emission intensity at time t; P(t) is the power generation at time t; Q coal (t) is the coal consumption at time t; ε1 is the preset carbon emission factor for coal combustion.

8. An evaluation device for a coal-fired unit, characterized in that, Including: A data acquisition module, a power generation efficiency determination module, and a performance evaluation module; The data acquisition module is used to obtain the coal consumption, ammonia consumption, and power generation power at each moment of the coal-fired unit at different time scales; wherein, the time scales include historical typical days, historical typical months, and historical typical years; The power generation efficiency determination module is used to, for each moment, calculate and generate the coal input heat at the current moment according to the coal consumption at the current moment and the preset lower calorific value of coal; calculate and generate the ammonia input heat at the current moment according to the ammonia consumption at the current moment and the preset lower calorific value of ammonia; calculate and generate the power generation efficiency at the current moment according to the coal input heat, ammonia input heat, and power generation power at the current moment; Calculate the average value of the power generation efficiency at each moment under different time scales to generate the power generation efficiency of the coal-fired unit under different time scales; The performance evaluation module is used to evaluate the performance of the coal-fired unit according to the power generation efficiency of the coal-fired unit under different time scales.

9. An electronic device, characterized in that, Including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the evaluation method of the coal-fired unit according to any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium includes a stored computer program. When the computer program runs, it controls the device where the storage medium is located to execute the evaluation method of the coal-fired unit according to any one of claims 1 to 7.

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