A data analysis-based energy-saving method and system for a thermal power plant

Abstract

The application discloses a kind of based on data analysis's thermal power plant energy-saving method and system, it is related to data analysis processing technical field, including the real-time thermal energy conversion proportion of steam turbine is carried out data analysis processing, determine whether new steam turbine needs to be replaced and carries out thermal energy conversion.The application first carries out data analysis calculation to the historical data of thermal power plant, determines the real-time thermal energy conversion proportion of steam turbine, then, the real-time thermal energy conversion proportion of steam turbine is carried out first data comparison processing, determines the first real-time state of steam turbine and the second real-time state of steam turbine, finally, the first real-time state of steam turbine is verified by the pending task of thermal power plant and is processed, determines whether new steam turbine needs to be replaced and carries out thermal energy conversion, the above-mentioned mode, by analyzing and judging the historical data of thermal power plant, the real-time state of steam turbine is determined, avoids the situation that a large amount of thermal energy can only be converted to obtain less mechanical energy, saves fuel, reduces power generation cost.

Description

Technical Field

[0001] This invention relates to the field of technical data analysis and processing, specifically to a data analysis-based energy-saving method and system for thermal power plants. Background Technology

[0002] A fossil-fuel power station, or simply a thermal power plant, is a factory that uses combustible materials (such as coal) as fuel to produce electricity. The basic production process of a fossil-fuel power station is as follows: fuel burns to heat water and generate steam, converting the chemical energy of the fuel into heat energy. The steam pressure drives a turbine to rotate, converting the heat energy into mechanical energy. The turbine then drives a generator to rotate, converting the mechanical energy into electrical energy. Fossil-fuel power stations are mainly divided into steam power plants, gas turbine power plants, and internal combustion engine power plants.

[0003] As steam turbines are used for a long time, the proportion of thermal energy converted into mechanical energy will decrease. If the condition of the steam turbine is not monitored, a large amount of thermal energy will only be converted into a small amount of mechanical energy, resulting in fuel waste and increased power generation costs. Summary of the Invention

[0004] To address the aforementioned technical problems, this paper provides a data analysis-based energy-saving method and system for thermal power plants. This technical solution solves the problem mentioned in the background that if the turbine's status is not monitored, a large amount of thermal energy can only be converted into a small amount of mechanical energy, resulting in fuel waste and increased power generation costs.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A data analysis-based energy-saving method for thermal power plants includes:

[0007] Historical data from thermal power plants is acquired, and based on intelligent analysis terminals, the historical data from thermal power plants is analyzed and processed to determine the first thermal energy conversion ratio of the steam turbine.

[0008] Based on the intelligent analysis terminal, the first thermal energy conversion ratio of the steam turbine and the historical data of the thermal power plant are calculated and analyzed to determine the real-time thermal energy conversion ratio of the steam turbine.

[0009] Based on the intelligent analysis terminal, the real-time heat energy conversion ratio of the steam turbine is analyzed and processed to determine whether a new steam turbine needs to be replaced for heat energy conversion.

[0010] Preferably, the step of acquiring historical data from the thermal power plant, and performing data analysis and processing on the historical data based on an intelligent analysis terminal to determine the first thermal energy conversion ratio of the steam turbine specifically includes the following steps:

[0011] Based on the intelligent analysis terminal, data is read and processed from the database system of the thermal power plant to obtain historical data of the thermal power plant;

[0012] Based on intelligent analysis terminals, historical data of thermal power plants are classified and processed according to power generation tasks to obtain relevant data on power generation tasks of thermal power plants.

[0013] Based on the intelligent analysis terminal, data related to the power generation task of the thermal power plant is read and processed to obtain the data related to the first power generation task of the thermal power plant.

[0014] Based on the intelligent analysis terminal, the relevant data of the first power generation task of the thermal power plant are calculated, analyzed and processed to determine the first thermal energy conversion ratio of the steam turbine.

[0015] Preferably, the step of calculating and analyzing the relevant data of the first power generation task of the thermal power plant based on the intelligent analysis terminal to determine the first thermal energy conversion ratio of the steam turbine specifically includes the following steps:

[0016] Based on the intelligent analysis terminal, data related to the first power generation task of the thermal power plant is read and processed to obtain the amount of coal used in the first power generation task and the amount of mechanical energy generated by the steam turbine in the first power generation task.

[0017] Based on the intelligent analysis terminal, data is read and processed from the database system of the thermal power plant to obtain the calorific value of a unit of coal.

[0018] Based on the intelligent analysis terminal, the amount of coal used and the calorific value per unit of coal for the first power generation task are calculated and processed to determine the total calorific value of coal for the first power generation task.

[0019] Based on the intelligent analysis terminal, the total calorific value of coal combustion and the mechanical energy generated by the steam turbine in the first power generation task are calculated and processed to obtain the first thermal energy conversion ratio of the steam turbine.

[0020] Preferably, the step of calculating and analyzing the first thermal energy conversion ratio of the steam turbine and historical data of the thermal power plant based on the intelligent analysis terminal to determine the real-time thermal energy conversion ratio of the steam turbine specifically includes the following steps:

[0021] Based on the intelligent analysis terminal, data related to the power generation tasks of thermal power plants are read and processed to obtain the latest data related to the power generation tasks of thermal power plants.

[0022] Based on the intelligent analysis terminal, the latest power generation task data of the thermal power plant is read and processed to obtain the coal consumption and the mechanical energy generation of the steam turbine for the latest power generation task.

[0023] Based on the intelligent analysis terminal, the coal consumption and calorific value per unit of coal for the latest power generation task are calculated and processed to obtain the total calorific value of coal for the latest task.

[0024] Based on the intelligent analysis terminal, the total calorific value of coal combustion for the latest task and the mechanical energy generation of the steam turbine for the latest power generation task are calculated and processed to determine the second thermal energy conversion ratio of the steam turbine.

[0025] Based on the intelligent analysis terminal, the first thermal energy conversion ratio and the second thermal energy conversion ratio of the steam turbine are calculated and analyzed to determine the real-time thermal energy conversion ratio of the steam turbine.

[0026] Preferably, the step of calculating and analyzing the first and second thermal energy conversion ratios of the steam turbine based on the intelligent analysis terminal to determine the real-time thermal energy conversion ratio of the steam turbine specifically includes the following steps:

[0027] Based on the intelligent analysis terminal, data related to the power generation tasks of thermal power plants are read and processed to obtain the power generation duration of each power generation task of the thermal power plant.

[0028] Based on the intelligent analysis terminal, the power generation time of each power generation task of the thermal power plant is summed and calculated to obtain the total power generation time of the thermal power plant.

[0029] Based on the intelligent analysis terminal, the difference between the first thermal energy conversion ratio and the second thermal energy conversion ratio of the steam turbine is calculated to determine the degradation value of the thermal energy conversion ratio of the steam turbine.

[0030] Based on the intelligent analysis terminal, the thermal energy conversion ratio degradation value of the steam turbine and the total power generation time of the thermal power plant are calculated and processed to obtain the thermal energy conversion ratio degradation value of the steam turbine per unit time.

[0031] Based on the intelligent analysis terminal, the degradation value of the turbine's thermal energy conversion ratio per unit time and the turbine's second thermal energy conversion ratio are summed and calculated to determine the turbine's real-time thermal energy conversion ratio.

[0032] Preferably, the step of analyzing and processing the real-time thermal energy conversion ratio of the steam turbine based on the intelligent analysis terminal to determine whether a new steam turbine needs to be replaced for thermal energy conversion specifically includes the following steps:

[0033] Based on the intelligent analysis terminal, the real-time heat energy conversion ratio of the steam turbine is compared and analyzed to determine the real-time state of the steam turbine; wherein, the real-time state of the steam turbine is specifically either the first real-time state of the steam turbine or the second real-time state of the steam turbine.

[0034] If the real-time status of the steam turbine is the first real-time status, the first real-time status of the steam turbine is verified based on the intelligent analysis terminal to determine whether a new steam turbine needs to be replaced for heat energy conversion.

[0035] If the turbine's real-time status is the second real-time status, replace the turbine with a new one for thermal energy conversion.

[0036] Preferably, the step of comparing and analyzing the real-time heat energy conversion ratio of the steam turbine based on the intelligent analysis terminal to determine the real-time status of the steam turbine specifically includes the following steps:

[0037] Based on the intelligent analysis terminal, the real-time heat energy conversion ratio of the steam turbine and the set heat energy conversion ratio threshold are judged and processed.

[0038] If the real-time thermal energy conversion ratio of the steam turbine is greater than the set thermal energy conversion ratio threshold, the first real-time state of the steam turbine will be output.

[0039] If the real-time thermal energy conversion ratio of the steam turbine is less than or equal to the set thermal energy conversion ratio threshold, the second real-time state of the steam turbine will be output.

[0040] Preferably, the step of performing state verification processing on the first real-time state of the steam turbine based on the intelligent analysis terminal to determine whether a new steam turbine needs to be replaced for heat energy conversion specifically includes the following steps:

[0041] Based on the intelligent analysis terminal, the task list of the thermal power plant is read and processed to obtain the tasks to be executed by the thermal power plant.

[0042] Based on the intelligent analysis terminal, data is read and processed for the tasks to be performed in the thermal power plant to obtain the amount of coal used in the tasks to be performed.

[0043] Based on the intelligent analysis terminal, the data related to the power generation task of the thermal power plant are matched and processed using the amount of coal used in the task to be executed as a feature, so as to determine the combustion time corresponding to the amount of coal used in the task to be executed.

[0044] Based on the intelligent analysis terminal, the combustion time corresponding to the amount of coal used for the task to be performed and the degradation value of the turbine's thermal energy conversion ratio per unit time are calculated and processed to determine the degradation value of the turbine's thermal energy conversion ratio for completing the task to be performed.

[0045] Based on the intelligent analysis terminal, the degradation value of the thermal energy conversion ratio of the steam turbine that has completed the task to be performed and the second thermal energy conversion ratio of the steam turbine are calculated and analyzed to determine whether a new steam turbine needs to be replaced for thermal energy conversion.

[0046] Preferably, the step of calculating and analyzing the degradation value of the thermal energy conversion ratio of the steam turbine that has completed the task to be performed and the second thermal energy conversion ratio of the steam turbine based on the intelligent analysis terminal to determine whether a new steam turbine needs to be replaced for thermal energy conversion specifically includes the following steps:

[0047] Based on the intelligent analysis terminal, the thermal energy conversion ratio degradation value of the steam turbine that has completed the task to be performed and the second thermal energy conversion ratio of the steam turbine are summed and calculated to determine the thermal energy conversion ratio of the steam turbine that has completed the task to be performed.

[0048] Based on the intelligent analysis terminal, the thermal energy conversion ratio of the steam turbine that has completed the task to be executed and the set thermal energy conversion ratio threshold are judged and processed.

[0049] If the thermal energy conversion ratio of the steam turbine that has completed the task is greater than or equal to the set thermal energy conversion ratio threshold, the thermal energy conversion ratio of the steam turbine meets the standard and there is no need to replace the steam turbine with a new one for thermal energy conversion.

[0050] If the thermal energy conversion ratio of the steam turbine that has completed the task is less than the set thermal energy conversion ratio threshold, the thermal energy conversion ratio of the steam turbine does not meet the standard, and the steam turbine will be replaced with a new steam turbine for thermal energy conversion.

[0051] Furthermore, a data analysis-based energy-saving system for thermal power plants is proposed to achieve the aforementioned data analysis-based energy-saving method for thermal power plants, including:

[0052] The intelligent analysis terminal is used to control various modules to perform data calculation and processing on data related to the power generation tasks of the thermal power plant, and to determine the real-time thermal energy conversion ratio of the steam turbine; the intelligent analysis terminal is also used to control various modules to perform status analysis, data calculation and processing, and data comparison processing on the real-time thermal energy conversion ratio of the steam turbine and the tasks to be executed by the thermal power plant, to determine whether a new steam turbine needs to be replaced for thermal energy conversion; the intelligent analysis terminal is also used to control data transmission and information interaction between various modules.

[0053] A database system for storing historical data of thermal power plants;

[0054] The data classification module is used to classify and process historical data of thermal power plants to obtain data related to the power generation tasks of thermal power plants.

[0055] The first data calculation module is used to perform data calculation and processing on the power generation task-related data of the power plant to determine the first thermal energy conversion ratio and the second thermal energy conversion ratio of the steam turbine.

[0056] The second data calculation module is used to perform data calculation and processing on the first thermal energy conversion ratio and the second thermal energy conversion ratio of the steam turbine to determine the real-time thermal energy conversion ratio of the steam turbine.

[0057] A status determination module is used to judge and process the real-time heat energy conversion ratio of the steam turbine to determine the real-time status of the steam turbine.

[0058] The first state analysis module performs data calculation and comparison processing on the tasks to be executed by the thermal power plant and the second thermal energy conversion ratio of the steam turbine based on the first real-time state of the steam turbine, and determines whether a new steam turbine needs to be replaced for thermal energy conversion.

[0059] The second state analysis module replaces the steam turbine with a new one for thermal energy conversion based on the second real-time state of the steam turbine.

[0060] Compared with existing technologies, the present invention provides a data analysis-based energy-saving method and system for thermal power plants, which has the following beneficial effects:

[0061] This invention first analyzes and calculates historical data from thermal power plants to determine the real-time thermal energy conversion ratio of the steam turbine. Then, it performs a first data comparison process on the real-time thermal energy conversion ratio of the steam turbine to determine the first and second real-time states of the steam turbine. Finally, it verifies the first real-time state of the steam turbine through the pending tasks of the thermal power plant to determine whether a new steam turbine needs to be replaced for thermal energy conversion. This method, by analyzing and judging historical data from thermal power plants to determine the real-time state of the steam turbine, avoids the situation where a large amount of thermal energy can only be converted into a small amount of mechanical energy, thus saving fuel and reducing power generation costs. Attached Figure Description

[0062] Figure 1 This is a flowchart illustrating steps S100-S300 in a data analysis-based energy-saving method for thermal power plants proposed in this invention.

[0063] Figure 2 This is a structural block diagram of a data analysis-based energy-saving system for thermal power plants proposed in this invention. Detailed Implementation

[0064] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0065] Reference Figure 1 As shown, a data analysis-based energy-saving method for thermal power plants includes:

[0066] S100. Obtain historical data from the thermal power plant, perform data analysis and processing on the historical data of the thermal power plant based on the intelligent analysis terminal, and determine the first thermal energy conversion ratio of the steam turbine.

[0067] S200: Based on the intelligent analysis terminal, the first heat energy conversion ratio of the steam turbine and the historical data of the thermal power plant are calculated and analyzed to determine the real-time heat energy conversion ratio of the steam turbine.

[0068] S300, based on the intelligent analysis terminal, performs data analysis and processing on the real-time heat energy conversion ratio of the steam turbine to determine whether a new steam turbine needs to be replaced for heat energy conversion;

[0069] Those skilled in the art will understand that as steam turbines are used for a long time, the proportion of thermal energy converted into mechanical energy will decrease. However, steam turbines cannot be replaced frequently because the cost of a steam turbine exceeds the value of fuel. Therefore, steam turbines are only replaced when their thermal energy conversion rate drops to a certain level. If the condition of the steam turbine is not monitored, it will result in fuel waste when the steam turbine can only convert a large amount of thermal energy into a small amount of mechanical energy, and it will also increase the cost of power generation. Therefore, by performing data calculation and analysis on historical data of thermal power plants to determine the real-time condition of the steam turbine, a new steam turbine is replaced when the real-time condition of the steam turbine does not meet the standards, thereby saving fuel and reducing the cost of power generation.

[0070] Example 1

[0071] S100. Obtain historical data from the thermal power plant, and based on the intelligent analysis terminal, perform data analysis and processing on the historical data of the thermal power plant to determine the first thermal energy conversion ratio of the steam turbine. This specifically includes the following steps:

[0072] S101. Based on the intelligent analysis terminal, perform data reading and processing on the database system of the thermal power plant to obtain historical data of the thermal power plant;

[0073] S102. Based on the intelligent analysis terminal, the historical data of the thermal power plant is classified and processed according to the characteristics of power generation tasks to obtain relevant data on the power generation tasks of the thermal power plant.

[0074] S103. Based on the intelligent analysis terminal, perform data reading and processing on the power generation task-related data of the thermal power plant to obtain the first power generation task-related data of the thermal power plant.

[0075] S104. Based on the intelligent analysis terminal, calculate, analyze and process the relevant data of the first power generation task of the thermal power plant to determine the first thermal energy conversion ratio of the steam turbine.

[0076] It is understandable that the first power generation task of a thermal power plant is when the steam turbine's thermal energy conversion ratio is at its maximum. In order to determine the degradation value of the steam turbine's thermal energy conversion ratio, it is necessary to determine the steam turbine's initial thermal energy conversion ratio (i.e., the steam turbine's first thermal energy conversion ratio).

[0077] Specifically, S104, based on the intelligent analysis terminal, calculates and analyzes the relevant data of the first power generation task of the thermal power plant to determine the first thermal energy conversion ratio of the steam turbine, including the following steps:

[0078] S1041. Based on the intelligent analysis terminal, the data related to the first power generation task of the thermal power plant is read and processed to obtain the amount of coal used in the first power generation task and the amount of mechanical energy generated by the steam turbine in the first power generation task.

[0079] S1042. Based on the intelligent analysis terminal, the database system of the thermal power plant is read and processed to obtain the calorific value of a unit of coal.

[0080] S1043. Based on the intelligent analysis terminal, calculate and process the amount of coal used and the calorific value per unit of coal for the first power generation task, and determine the total calorific value of coal for the first power generation task.

[0081] S1044. Based on the intelligent analysis terminal, calculate and process the total heat generation of coal in the first power generation task and the mechanical energy generation of the steam turbine in the first power generation task to obtain the first thermal energy conversion ratio of the steam turbine.

[0082] It is understandable that a steam turbine converts thermal energy into mechanical energy. To obtain the initial thermal energy conversion ratio of the steam turbine, it is necessary to obtain the total heat generated by the coal combustion in the first power generation task and the mechanical energy generated by the steam turbine in the first power generation task. Then, by quotienting the total heat generated by the coal combustion in the first power generation task and the mechanical energy generated by the steam turbine in the first power generation task, the initial thermal energy conversion ratio of the steam turbine can be obtained.

[0083] Example 2

[0084] S200. Based on the intelligent analysis terminal, the first heat energy conversion ratio of the steam turbine and historical data of the thermal power plant are calculated and analyzed to determine the real-time heat energy conversion ratio of the steam turbine. The specific steps include the following:

[0085] S201. Based on the intelligent analysis terminal, the data related to the power generation task of the thermal power plant is read and processed to obtain the latest data related to the power generation task of the thermal power plant.

[0086] S202. Based on the intelligent analysis terminal, the latest power generation task data of the thermal power plant is read and processed to obtain the coal consumption of the latest power generation task and the mechanical energy generated by the steam turbine of the latest power generation task.

[0087] S203. Based on the intelligent analysis terminal, calculate and process the coal consumption and calorific value per unit of coal for the latest power generation task to obtain the total calorific value of coal for the latest task.

[0088] S204. Based on the intelligent analysis terminal, calculate and process the total calorific value of coal-fired power generation for the latest task and the mechanical energy generation of the turbine for the latest power generation task, and determine the second thermal energy conversion ratio of the turbine.

[0089] S205. Based on the intelligent analysis terminal, calculate and analyze the first thermal energy conversion ratio and the second thermal energy conversion ratio of the steam turbine to determine the real-time thermal energy conversion ratio of the steam turbine.

[0090] Understandably, determining the real-time thermal energy conversion ratio of a steam turbine cannot be achieved solely by relying on its first thermal energy conversion ratio. It is necessary to find additional data related to the turbine's thermal energy conversion ratio. Therefore, we introduce the latest power generation task data from the thermal power plant. This latest data represents the power generation task recently completed by the plant, and the tasks to be performed after this are the plant's remaining tasks. Therefore, we calculate and analyze this latest power generation task data to determine the turbine's second thermal energy conversion ratio. Finally, by calculating and analyzing both the turbine's first and second thermal energy conversion ratios, we can determine the turbine's real-time thermal energy conversion ratio.

[0091] Specifically, S205, based on the intelligent analysis terminal, calculates and analyzes the first and second thermal energy conversion ratios of the steam turbine to determine the real-time thermal energy conversion ratio of the steam turbine, including the following steps:

[0092] S2051. Based on the intelligent analysis terminal, data reading and processing are performed on the power generation task-related data of the thermal power plant to obtain the power generation duration of each power generation task of the thermal power plant.

[0093] S2052. Based on the intelligent analysis terminal, the power generation time of each power generation task of the thermal power plant is summed and calculated to obtain the total power generation time of the thermal power plant.

[0094] S2053. Based on the intelligent analysis terminal, the difference between the first thermal energy conversion ratio and the second thermal energy conversion ratio of the steam turbine is calculated to determine the degradation value of the thermal energy conversion ratio of the steam turbine.

[0095] S2054. Based on the intelligent analysis terminal, calculate and process the thermal energy conversion ratio degradation value of the steam turbine and the total power generation time of the thermal power plant to obtain the thermal energy conversion ratio degradation value of the steam turbine per unit time.

[0096] S2055. Based on the intelligent analysis terminal, the thermal energy conversion ratio degradation value of the steam turbine per unit time and the second thermal energy conversion ratio of the steam turbine are summed and calculated to determine the real-time thermal energy conversion ratio of the steam turbine.

[0097] It is understandable that steam turbines will degrade once they are manufactured. However, the degradation of steam turbines mainly occurs during use, while the degradation during idle periods is negligible. Therefore, by calculating the difference between the first and second thermal energy conversion ratios of the steam turbine based on the total power generation time of the thermal power plant, we can obtain the degradation value of the steam turbine during use (i.e., the degradation value of the steam turbine's thermal energy conversion ratio per unit time). Subsequently, we only need to sum the degradation value of the steam turbine's thermal energy conversion ratio per unit time with the second thermal energy conversion ratio to determine the thermal energy conversion ratio of the steam turbine corresponding to the task to be performed by the thermal power plant.

[0098] Example 3

[0099] S300, based on the intelligent analysis terminal, performs data analysis and processing on the real-time heat energy conversion ratio of the steam turbine to determine whether a new steam turbine needs to be replaced for heat energy conversion. Specifically, this includes the following steps:

[0100] S301. Based on the intelligent analysis terminal, the real-time heat energy conversion ratio of the steam turbine is compared and analyzed to determine the real-time state of the steam turbine; wherein, the real-time state of the steam turbine is either the first real-time state of the steam turbine or the second real-time state of the steam turbine.

[0101] S302. If the real-time status of the steam turbine is the first real-time status, based on the intelligent analysis terminal, the first real-time status of the steam turbine is verified to determine whether a new steam turbine needs to be replaced for thermal energy conversion.

[0102] S303. If the real-time status of the steam turbine is the second real-time status, replace the steam turbine with a new steam turbine for heat energy conversion.

[0103] Specifically, S301, based on the intelligent analysis terminal, compares and analyzes the real-time heat energy conversion ratio of the steam turbine to determine the real-time status of the steam turbine, including the following steps:

[0104] S3011. Based on the intelligent analysis terminal, the real-time heat energy conversion ratio of the steam turbine and the set heat energy conversion ratio threshold are judged and processed.

[0105] S3012. If the real-time thermal energy conversion ratio of the steam turbine is greater than the set thermal energy conversion ratio threshold, output the first real-time state of the steam turbine.

[0106] S3013. If the real-time thermal energy conversion ratio of the steam turbine is less than or equal to the set thermal energy conversion ratio threshold, output the second real-time state of the steam turbine.

[0107] Understandably, when the thermal energy conversion ratio of a steam turbine decreases to a certain level, even if a large amount of thermal energy is supplied to the steam turbine, only a small amount of mechanical energy can be obtained. In this state, the steam turbine will cause fuel waste and increase the cost of power generation. Therefore, by comparing and judging the real-time thermal energy conversion ratio of the steam turbine, it is determined whether the state of the steam turbine meets the standard. If it does not meet the standard, the steam turbine needs to be replaced.

[0108] Specifically, S302, based on the intelligent analysis terminal, verifies the first real-time status of the steam turbine to determine whether a new steam turbine needs to be replaced for heat energy conversion. This includes the following steps:

[0109] S3021. Based on the intelligent analysis terminal, the task list of the thermal power plant is read and processed to obtain the tasks to be executed by the thermal power plant.

[0110] S3022. Based on the intelligent analysis terminal, data reading and processing are performed on the tasks to be executed in the thermal power plant to obtain the amount of coal used in the tasks to be executed.

[0111] S3023. Based on the intelligent analysis terminal, the relevant data of the power generation task of the thermal power plant are matched and processed with the coal consumption of the task to be executed as the feature, and the combustion time corresponding to the coal consumption of the task to be executed is determined.

[0112] S3024. Based on the intelligent analysis terminal, calculate and process the combustion time corresponding to the amount of coal used for the task to be performed and the thermal energy conversion ratio degradation value of the steam turbine per unit time, and determine the thermal energy conversion ratio degradation value of the steam turbine to complete the task to be performed.

[0113] S3025. Based on the intelligent analysis terminal, calculate and analyze the degradation value of the thermal energy conversion ratio of the steam turbine that has completed the task to be executed and the second thermal energy conversion ratio of the steam turbine to determine whether it is necessary to replace the steam turbine for thermal energy conversion.

[0114] Understandably, even if the turbine is in its first real-time state, it cannot guarantee that coal will not be wasted. This is because the power generation task of a thermal power plant is a continuous process. Even if the turbine's real-time thermal energy conversion ratio meets the standard, it cannot guarantee that the turbine will not waste coal during the power generation process. This is because the turbine will degrade during the conversion of thermal energy, thus reducing the real-time thermal energy conversion ratio. When the turbine's real-time thermal energy conversion ratio does not meet the standard during the power generation task, the turbine cannot be replaced because it is performing the power generation task. This results in a situation where a large amount of thermal energy can only be converted into a small amount of mechanical energy, leading to coal waste and increasing power generation costs.

[0115] Specifically, S3025, based on an intelligent analysis terminal, calculates and analyzes the degradation value of the thermal energy conversion ratio of the steam turbine that has completed the task to be executed and the second thermal energy conversion ratio of the steam turbine to determine whether a new steam turbine needs to be replaced for thermal energy conversion. The specific steps include the following:

[0116] S30251. Based on the intelligent analysis terminal, the thermal energy conversion ratio degradation value of the steam turbine that has completed the task to be executed and the second thermal energy conversion ratio of the steam turbine are summed and calculated to determine the thermal energy conversion ratio of the steam turbine that has completed the task to be executed.

[0117] S30252. Based on the intelligent analysis terminal, the thermal energy conversion ratio of the steam turbine that has completed the task to be executed and the set thermal energy conversion ratio threshold are judged and processed.

[0118] S30253. If the thermal energy conversion ratio of the steam turbine that has completed the task to be performed is greater than or equal to the set thermal energy conversion ratio threshold, the thermal energy conversion ratio of the steam turbine meets the standard and there is no need to replace the steam turbine for thermal energy conversion.

[0119] S30254. If the thermal energy conversion ratio of the steam turbine that has completed the task to be performed is less than the set thermal energy conversion ratio threshold, the thermal energy conversion ratio of the steam turbine does not meet the standard, and the steam turbine is replaced with a new steam turbine for thermal energy conversion.

[0120] Understandably, to avoid the turbine's real-time thermal energy conversion ratio failing to meet standards during power generation, the duration of tasks to be performed in thermal power plants is analyzed to determine the combustion time corresponding to the coal consumption of the task. This is because once coal combustion is complete, no more heat is generated, and the turbine's conversion process ends. Therefore, the combustion time corresponds to the turbine's operating time. By calculating the combustion time corresponding to the coal consumption of the task and the degradation value of the turbine's thermal energy conversion ratio per unit time, the degradation value of the turbine's thermal energy conversion ratio after completing the task can be determined. Then, the degradation value of the turbine's thermal energy conversion ratio after completing the task and... By summing the second thermal energy conversion ratio of the steam turbine, the thermal energy conversion ratio of the steam turbine that has completed the task can be determined. Finally, by comparing the thermal energy conversion ratios of the steam turbines that have completed the task, it can be determined whether the thermal energy conversion ratios of the steam turbines will fail to meet the standards during power generation. If the thermal energy conversion ratios of the steam turbines will not fail to meet the standards during power generation, there is no need to replace the steam turbines for thermal energy conversion. If the thermal energy conversion ratios of the steam turbines will fail to meet the standards during power generation, then the steam turbines need to be replaced for thermal energy conversion. Otherwise, a large amount of thermal energy will only be converted into a small amount of mechanical energy, wasting coal and increasing power generation costs.

[0121] Reference Figure 2 As shown, a data analysis-based energy-saving system for thermal power plants, used to implement the aforementioned data analysis-based energy-saving method for thermal power plants, includes:

[0122] The intelligent analysis terminal is used to control various modules to perform data calculation and processing on data related to the power generation tasks of the thermal power plant, and to determine the real-time thermal energy conversion ratio of the steam turbine; the intelligent analysis terminal is also used to control various modules to perform status analysis, data calculation and processing, and data comparison processing on the real-time thermal energy conversion ratio of the steam turbine and the tasks to be executed by the thermal power plant, to determine whether a new steam turbine needs to be replaced for thermal energy conversion; the intelligent analysis terminal is also used to control data transmission and information interaction between various modules.

[0123] A database system for storing historical data of thermal power plants;

[0124] The data classification module is used to classify and process historical data of thermal power plants to obtain data related to the power generation tasks of thermal power plants.

[0125] The first data calculation module is used to perform data calculation and processing on the power generation task-related data of the power plant to determine the first thermal energy conversion ratio and the second thermal energy conversion ratio of the steam turbine.

[0126] The second data calculation module is used to perform data calculation and processing on the first thermal energy conversion ratio and the second thermal energy conversion ratio of the steam turbine to determine the real-time thermal energy conversion ratio of the steam turbine.

[0127] A status determination module is used to judge and process the real-time heat energy conversion ratio of the steam turbine to determine the real-time status of the steam turbine.

[0128] The first state analysis module performs data calculation and comparison processing on the tasks to be executed by the thermal power plant and the second thermal energy conversion ratio of the steam turbine based on the first real-time state of the steam turbine, and determines whether a new steam turbine needs to be replaced for thermal energy conversion.

[0129] The second state analysis module replaces the steam turbine with a new one for thermal energy conversion based on the second real-time state of the steam turbine.

[0130] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A data analysis-based energy-saving method for thermal power plants, characterized in that, include: Acquire historical data from thermal power plants, perform data analysis and processing on this data, and determine the first thermal energy conversion ratio of the steam turbine. Specifically, this includes: Data reading and processing are performed on the relevant data of the first power generation task of the thermal power plant to obtain the coal consumption and mechanical energy generation of the steam turbine in the first power generation task. Data is read and processed from the database system of the thermal power plant to obtain the calorific value of a unit of coal. The amount of coal used and the calorific value per unit of coal for the first power generation task are calculated and processed to determine the total calorific value of coal for the first power generation task. The total calorific value of coal-fired power generation and the mechanical energy generated by the steam turbine in the first power generation task are calculated and processed to obtain the first thermal energy conversion ratio of the steam turbine. The first heat conversion ratio of the steam turbine and historical data from the thermal power plant are calculated and analyzed to determine the real-time heat conversion ratio of the steam turbine, specifically including: Data reading and processing are performed on the power generation task data of thermal power plants to obtain the latest power generation task data of thermal power plants; Data reading and processing are performed on the latest power generation task data of thermal power plants to obtain the coal consumption and the mechanical energy generation of the turbine for the latest power generation task. The coal consumption and calorific value per unit of coal for the latest power generation task are calculated and processed to obtain the total calorific value of coal for the latest task. The total calorific value of coal-fired power generation for the latest task and the mechanical energy generation of steam turbine for the latest power generation task are calculated and processed to determine the second thermal energy conversion ratio of steam turbine. The first and second thermal energy conversion ratios of the steam turbine are calculated and analyzed to determine the real-time thermal energy conversion ratio of the steam turbine. The first and second heat energy conversion ratios of the steam turbine are calculated and analyzed to determine the real-time heat energy conversion ratio of the steam turbine, specifically including: Data reading and processing are performed on the power generation tasks of thermal power plants to obtain the power generation duration of each power generation task. The total power generation time of the thermal power plant is obtained by summing the power generation time of each power generation task. The difference between the first and second thermal energy conversion ratios of the steam turbine is calculated to determine the degradation value of the steam turbine's thermal energy conversion ratio. The thermal energy conversion ratio degradation value of the steam turbine and the total power generation time of the thermal power plant are calculated and processed to obtain the thermal energy conversion ratio degradation value of the steam turbine per unit time. The real-time thermal energy conversion ratio of the steam turbine is determined by summing the degradation value of the unit time thermal energy conversion ratio of the steam turbine and the second thermal energy conversion ratio of the steam turbine. If the real-time thermal energy conversion ratio of the steam turbine is greater than the set thermal energy conversion ratio threshold, the steam turbine will be subjected to state verification to determine whether a new steam turbine needs to be replaced for thermal energy conversion. If the real-time thermal energy conversion ratio of the steam turbine is less than or equal to the set thermal energy conversion ratio threshold, the steam turbine will be replaced with a new steam turbine for thermal energy conversion. The steam turbine undergoes condition verification to determine whether a new steam turbine is needed for thermal energy conversion. This includes: The task list of the thermal power plant is read and processed to obtain the tasks to be executed by the thermal power plant. Data reading and processing are performed on the tasks to be performed at the thermal power plant to obtain the amount of coal used for the tasks to be performed. Using the amount of coal used for tasks to be performed as a feature, information matching processing is performed on the power generation task-related data of thermal power plants to determine the combustion time corresponding to the amount of coal used for tasks to be performed. The combustion time corresponding to the amount of coal used for the task to be performed and the degradation value of the turbine's thermal energy conversion ratio per unit time are calculated and processed to determine the degradation value of the turbine's thermal energy conversion ratio for completing the task to be performed. The thermal energy conversion ratio degradation value of the steam turbine that has completed the task to be performed and the second thermal energy conversion ratio of the steam turbine are summed and calculated to determine the thermal energy conversion ratio of the steam turbine that has completed the task to be performed. Based on the thermal energy conversion ratio of the steam turbine that has completed the task to be performed, it is determined whether a new steam turbine needs to be replaced for thermal energy conversion.

2. The energy-saving method for thermal power plants based on data analysis according to claim 1, characterized in that, The process involves acquiring historical data from thermal power plants, performing data analysis and processing to determine the first thermal energy conversion ratio of the steam turbine. This includes the following steps: Data reading and processing are performed on the database system of the thermal power plant to obtain historical data of the thermal power plant; Historical data of thermal power plants are classified and processed based on power generation tasks to obtain relevant data on power generation tasks of thermal power plants; Data reading and processing are performed on the power generation task data of the thermal power plant to obtain the first power generation task data of the thermal power plant; The relevant data of the first power generation task of the thermal power plant are calculated, analyzed and processed to determine the first thermal energy conversion ratio of the steam turbine.

3. The energy-saving method for thermal power plants based on data analysis according to claim 1, characterized in that, Determining whether a new steam turbine needs to be replaced for heat energy conversion based on the heat energy conversion ratio of the steam turbine that has completed the task to be performed involves the following steps: The thermal energy conversion ratio of the steam turbine that has completed the task to be performed and the set thermal energy conversion ratio threshold are judged and processed. If the thermal energy conversion ratio of the steam turbine that has completed the task is greater than or equal to the set thermal energy conversion ratio threshold, the thermal energy conversion ratio of the steam turbine meets the standard and there is no need to replace the steam turbine with a new one for thermal energy conversion. If the thermal energy conversion ratio of the steam turbine that has completed the task is less than the set thermal energy conversion ratio threshold, the thermal energy conversion ratio of the steam turbine does not meet the standard, and the steam turbine will be replaced with a new steam turbine for thermal energy conversion.

4. A data analysis-based energy-saving system for thermal power plants, used to implement the data analysis-based energy-saving method for thermal power plants as described in any one of claims 1-3, characterized in that, include: The intelligent analysis terminal is used to control various modules to perform data calculation and processing on the power generation task-related data of the thermal power plant, determine the real-time thermal energy conversion ratio of the steam turbine, perform status analysis, data calculation and processing, and data comparison processing on the real-time thermal energy conversion ratio of the steam turbine and the tasks to be executed in the thermal power plant, and determine whether a new steam turbine needs to be replaced for thermal energy conversion. The intelligent analysis terminal is also used to control data transmission and information exchange between various modules. Database system, used to store historical data of thermal power plants; The data classification module is used to classify and process historical data of thermal power plants to obtain data related to the power generation tasks of thermal power plants. The first data calculation module reads and processes data related to the first power generation task of the thermal power plant to obtain the coal consumption and the mechanical energy generation of the turbine for the first power generation task; it reads and processes data from the thermal power plant's database system to obtain the calorific value per unit of coal; it calculates and processes the coal consumption and calorific value per unit of coal for the first power generation task to determine the total calorific value of coal for the first power generation task; and it calculates and processes the total calorific value of coal for the first power generation task and the mechanical energy generation of the turbine for the first power generation task to obtain the first thermal energy conversion ratio of the turbine. For example, data reading and processing are performed on the power generation task data of a thermal power plant to obtain the latest power generation task data; the latest power generation task data is then processed to obtain the coal consumption and turbine mechanical energy generation of the latest power generation task; the coal consumption and calorific value per unit of coal are calculated to obtain the total calorific value of the coal for the latest task; and the total calorific value of the coal and the turbine mechanical energy generation of the latest power generation task are calculated to determine the turbine's second thermal energy conversion ratio. The second data calculation module reads and processes data related to the power generation tasks of the thermal power plant to obtain the power generation duration of each power generation task; it sums the power generation duration of each power generation task to obtain the total power generation duration of the thermal power plant; it calculates the difference between the first and second thermal energy conversion ratios of the steam turbine to determine the degradation value of the steam turbine's thermal energy conversion ratio; and it calculates the degradation value of the steam turbine's thermal energy conversion ratio and the total power generation duration of the thermal power plant to obtain the degradation value of the steam turbine's thermal energy conversion ratio per unit time. The real-time thermal energy conversion ratio of the steam turbine is determined by summing the degradation value of the unit time thermal energy conversion ratio of the steam turbine and the second thermal energy conversion ratio of the steam turbine. The first state analysis module performs state verification processing on the steam turbine if the real-time thermal energy conversion ratio of the steam turbine is greater than the set thermal energy conversion ratio threshold, and determines whether a new steam turbine needs to be replaced for thermal energy conversion. The second state analysis module will replace the steam turbine with a new steam turbine if the real-time thermal energy conversion ratio of the steam turbine is less than or equal to the set thermal energy conversion ratio threshold. The status verification module reads and processes data from the task list of the thermal power plant to obtain the tasks to be executed. It then processes the data for these tasks to obtain their coal consumption. Using the coal consumption as a feature, it matches the power plant's power generation task-related data to determine the combustion time corresponding to the coal consumption of each task. It calculates the combustion time corresponding to the coal consumption of each task and the degradation value of the turbine's thermal energy conversion ratio per unit time to determine the degradation value of the turbine's thermal energy conversion ratio after completing the task. Finally, it sums the degradation value of the turbine's thermal energy conversion ratio after completing the task with the turbine's second thermal energy conversion ratio to determine the turbine's thermal energy conversion ratio after completing the task. Based on this ratio, it determines whether a new turbine needs to be replaced for thermal energy conversion.

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