Control method and device, equipment and storage medium of mixed gas power generation system

Abstract

The application provides a control method and device of a mixed gas power generation system, equipment and a storage medium, and belongs to the technical field of new energy power generation. The method comprises the following steps: predicting the target gas type and the proportion of the target gas to be input into a gas turbine unit after a first time length based on load operation data, the current gas type input into the gas turbine unit and the combustion stage; calculating the input rate of each target gas based on the input rate and the total heat of the exhaust gas of the gas turbine unit per unit time after a second time length; calculating the exhaust gas proportion for heating each target gas based on the exhaust gas proportion; heating each target gas based on the exhaust gas proportion; monitoring the temperature value of the gas in the gas turbine unit in real time; and adjusting and controlling the operation state of the mixed gas power generation system based on the temperature value. The application can flexibly adjust the gas proportion input into the gas turbine, and improve the energy utilization rate of the system.

Description

Technical Field

[0001] This application belongs to the field of new energy power generation technology, and more specifically, it relates to a control method, device, equipment, and storage medium for a mixed gas power generation system. Background Technology

[0002] Against the backdrop of global energy structure transformation and the advancement of "dual carbon" goals, efficient energy utilization and clean energy development have become core issues for sustainable development in all countries. The mixed gases required for mixed gas power generation systems encompass refining tail gases and coal mine methane generated in industrial production, biogas and landfill gas from agriculture and municipal sectors, as well as blends of natural gas and renewable gases (such as hydrogen). Utilizing these mixed gases for power generation not only enables the resource utilization of industrial waste and agricultural byproducts, reducing greenhouse gas emissions, but also fills the gap in traditional fossil fuel supply, contributing to the diversification of the energy structure.

[0003] In existing technologies, mixed gas power generation systems mostly employ a static proportioning strategy, which involves mixing multiple different gases in a certain proportion and then directly feeding them into a gas generator set for power generation, or introducing another gas to generate electricity after one gas is consumed. These methods cannot flexibly adjust the input gas when the load power changes, resulting in low energy utilization. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a control method, apparatus, equipment, and storage medium for a mixed gas power generation system, which allows for flexible adjustment of the gas ratio input to the gas generator, thereby improving the system's energy utilization rate.

[0005] A first aspect of this application provides a control method for a mixed gas power generation system, the mixed gas power generation system including a gas generator set; the method includes:

[0006] Based on load operation data, the type of gas currently supplied to the gas generator set, the target gas type to be supplied to the gas generator set after the first combustion stage prediction, and the proportion of the target gas type to all gases in the gas generator set;

[0007] The target gas introduction rate is calculated based on the proportion of the target gas among all gases in the gas generator set.

[0008] Based on the predicted target gas injection rate and the total heat per unit time of the exhaust gas output by the gas generator set after the second duration, the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set is calculated, and the target gas is heated based on the exhaust gas corresponding to this ratio; the second duration is shorter than the first duration, and both the second duration and the first duration are timed based on the current moment.

[0009] Calculate the average temperature value of the target gas among the target gas types after the first time period, and obtain the temperature value of the gas generator set after the first time period;

[0010] The operating status of the mixed gas power generation system is regulated based on the difference between the temperature value of the gas generator set and the average temperature value after the first duration.

[0011] A second aspect of this application provides a control device for a mixed gas power generation system, the mixed gas power generation system including a gas generator set; the device includes:

[0012] The prediction unit is used to predict the target gas type to be introduced into the gas generator set after the first duration based on load operation data, the type of gas currently introduced into the gas generator set, and the combustion stage, as well as the proportion of the target gas type to all gases in the gas generator set.

[0013] The first calculation unit is used to calculate the injection rate of each target gas based on the proportion of the target gas in all gases of the gas generator set.

[0014] The second calculation unit is used to calculate the ratio of the volume of exhaust gas used to heat the target gas to the volume of exhaust gas output by the gas generator set based on the predicted target gas injection rate and the total heat per unit time of the exhaust gas output by the gas generator set after the second duration. The target gas is then heated based on the exhaust gas corresponding to this ratio. The second duration is shorter than the first duration, and both the second duration and the first duration are timed based on the current moment.

[0015] The data acquisition unit is used to calculate the average temperature value of the target gas among the target gas types after the first time period, and to acquire the temperature value of the gas generator set after the first time period;

[0016] The control unit is used to control the operating status of the mixed gas power generation system based on the difference between the temperature value and the average temperature value of the gas generator set after a first time period.

[0017] A third aspect of this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor executes the computer program to implement the steps of the control method for the hybrid gas power generation system described above.

[0018] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the control method for the mixed gas power generation system described above.

[0019] The beneficial effects of the control method, apparatus, equipment, and storage medium for the mixed gas power generation system provided in this application are as follows:

[0020] To address the problem of low energy utilization of gas generator sets when load power changes in the prior art, this application first determines the input time, type, and proportion of the target gas into the gas generator set based on the type of gas currently supplied, load operating data, and combustion stage. This method can predict load power changes and promptly add high-calorific-value gas to maintain stable power supply after a first duration. Secondly, based on the predicted target gas supply rate and the total heat per unit time of the exhaust gas output from the gas generator set after the second duration, the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output from the gas generator set is calculated. Heating the target gas with exhaust gas corresponding to this ratio fully utilizes the energy of the exhaust gas. Finally, the average temperature of the target gas type after the first duration is calculated. Based on the difference between the temperature of the gas generator set after the first duration and the average temperature, the heating rate or gas supply rate of the mixed gas power generation system is adjusted. This ensures stable power supply during load power changes in the shortest time, reduces energy waste, and improves the system's energy utilization rate. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic flowchart of a control method for a mixed gas power generation system provided in an embodiment of this application;

[0023] Figure 2 A structural block diagram of a control device for a mixed gas power generation system provided in an embodiment of this application;

[0024] Figure 3 This is a schematic block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0025] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following description will be provided in conjunction with the accompanying drawings and specific embodiments.

[0027] Please refer to Figure 1 , Figure 1 This is a schematic flowchart of a control method for a mixed gas power generation system provided in an embodiment of this application. The mixed gas power generation system includes a gas generator set, and the method may include: S101~S105.

[0028] S101: Based on load operation data, the type of gas currently supplied to the gas generator set, and the target gas type to be supplied to the gas generator set after the first duration of the combustion stage, as well as the proportion of the target gas type to all gases in the gas generator set.

[0029] In this embodiment, the mixed gas power generation system is centered around a gas turbine generator set. It can use one or more gases, such as natural gas, biogas, hydrogen, or syngas, as fuel, and generates electricity by driving the generator set through gas combustion. The mixed gas power generation system includes a gas turbine generator set, a gas supply module, a mixing and regulating module, and an exhaust gas treatment and energy recovery module (e.g., a waste heat boiler). The gas supply module can store multiple gases and supply them to the mixing and regulating module. The mixing and regulating module controls the ratio of different gases and delivers them to the gas turbine generator set for combustion and power generation. During this process, the system generates high-temperature exhaust gas, which can be recovered by the waste heat boiler and then released into the air.

[0030] To improve the energy utilization rate of the mixed gas power generation system, this embodiment first acquires the type of gas currently supplied to the gas generator set, load operating data, and combustion stage. The type of gas currently supplied to the gas generator set refers to the type of gas currently entering the gas generator set for combustion. This can be a single gas (such as natural gas or hydrogen) or a mixture of multiple gases (such as a mixture of natural gas and biogas). Its composition directly affects combustion efficiency and the operating status of the gas generator set. Load operating data refers to the real-time operating parameters of the load connected to the mixed gas power generation system, typically including but not limited to the load's real-time power, rated power, rated voltage, and load type, reflecting the load's demand for power generation. The combustion stage refers to the combustion state stage of the gas generator set during operation, typically divided into the start-up period (combustion initialization), the stable operation period (stable combustion state and stable power output), and the fuel consumption adjustment period (the current gas content supplied to the gas generator set is insufficient, requiring timely replenishment of new gas types). The combustion characteristics differ significantly between these stages, such as temperature, pressure, and reaction rate. During stable operation, if the power required by the load increases, the type of gas introduced can be increased, such as by adding high-calorific-value gases to improve the energy utilization rate of the system. During the combustion consumption adjustment period, the continuity of power generation of the system can also be ensured by increasing the type of gas introduced, thereby improving the energy utilization rate.

[0031] In this embodiment, a gas chromatograph, infrared spectrometer, or other gas composition detection equipment can be used to obtain the types of gas introduced into the gas generator set. For example, a gas chromatograph separates different gases using a chromatographic column, while a thermal conductivity detector and a flame ionization detector can perform quantitative analysis. The components are as follows. Load operation data can be obtained by installing a power quality analyzer on the load side to acquire parameters such as three-phase voltage, current, frequency, active power, reactive power, rated power, and harmonic components. Combustion stage data can be obtained through flame feature identification or exhaust gas composition analysis, which are conventional methods in this field and will not be described in detail here.

[0032] In this embodiment, the type of gas currently supplied to the gas generator set, load operating data, and combustion stage are input into a prediction model or a dynamic proportioning algorithm based on multi-objective optimization to obtain the target gas type supplied to the gas generator set after a first duration, as well as the proportion of the target gas type among all gases in the gas generator set. The prediction model can be a multi-feature prediction model based on machine learning, which can be trained based on historical operating data. The dynamic proportioning algorithm based on multi-objective optimization uses system operating objectives (such as maximizing efficiency and minimizing emissions) as constraints, and calculates the optimal target gas parameters in combination with real-time operating conditions. It is suitable for scenarios with drastic fluctuations in operating conditions that require real-time dynamic adjustment.

[0033] The first duration refers to the time interval from the current moment until the predicted target gas begins to be introduced into the gas generator set. The target gas type refers to the type of gas introduced into the gas generator set after the predicted first duration; it may be the same as or different from the current gas type, and must contain at least one gas, meeting the load requirements and unit operating conditions after the first duration. The proportion of the target gas type refers to the percentage by volume (or mass) of the target gas relative to all gases in the gas generator set when it is introduced, used to determine the specific ratio of the gas mixture and ensure combustion efficiency and safety.

[0034] S102: Calculate the target gas introduction rate based on the proportion of the target gas among all gases in the gas generator set.

[0035] In this embodiment, the gas flow rate refers to the amount of a specific target gas introduced into the gas generator set per unit time, typically expressed as a volumetric rate or a mass rate. The system calculates the total gas flow rate to meet power generation requirements based on the target power output of the gas generator set after a first time period and the average calorific value of the target gas type. Based on the total gas flow rate, the system calculates the individual flow rate of the target gas according to the proportion of the target gas among all gases in the gas generator set. For example, if the total gas flow rate is 100 m³ / h, and the target gas is hydrogen with a proportion of 30%, then the hydrogen flow rate is 100 m³ / h × 30% = 30 m³ / h.

[0036] S103: Based on the predicted target gas injection rate and the total heat per unit time of the exhaust gas output by the gas generator set after the second time, calculate the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set, and heat the target gas based on the exhaust gas corresponding to this ratio.

[0037] The second duration is shorter than the first duration, and both the second and first durations are timed based on the current moment.

[0038] In this embodiment, after determining the target gas to be supplied to the gas generator set, since the initial temperature of the target gas is low, if the target gas is directly input into the gas generator set after the first duration, the time required to heat the target gas will be longer than the time required to preheat the target gas before inputting it into the gas generator set. This will affect the system's energy utilization rate and the output power to the load. Therefore, in this embodiment, after determining the first duration for inputting the target gas into the gas generator set, a period of time can be used to preheat the target gas before the first duration. This period of time is the time difference between the first duration and the second duration. For example, if the current time is 8:00, the time after the first duration is 8:20, and the time after the second duration is 8:10, then the time period between 8:10 and 8:20 is used for preheating the target gas.

[0039] The total heat per unit time of the exhaust gas output from the gas turbine generator set refers to the total heat released per unit time by the exhaust gas generated by the gas turbine generator set after the second time period, reflecting the available energy scale of the waste heat. This exhaust gas is mainly used for secondary resource utilization through waste heat boilers or steam power generation, with a portion of the exhaust gas used for preheating the target gas. In this embodiment, the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas turbine generator set can be calculated based on the predicted target gas inlet rate and the total heat per unit time of the exhaust gas output from the gas turbine generator set after the second time period. The target gas is then heated based on the exhaust gas corresponding to this ratio. Alternatively, this ratio can be pre-calculated and set based on the fixed heating energy requirement of the target gas.

[0040] S104: Calculate the average temperature value of the target gas among the target gas types after the first time period, and obtain the temperature value of the gas generator set after the first time period.

[0041] In this embodiment, the average temperature of the target gas is calculated based on the real-time temperature of the target gas after a first time period (which can be acquired through a pipeline temperature sensor). Temperature values ​​of key components of the gas generator set at the same time point are collected, such as combustion chamber wall temperature or exhaust temperature, and these temperature values ​​are used as the temperature values ​​of the gas generator set after the first time period.

[0042] S105: The operating status of the mixed gas power generation system is regulated based on the difference between the temperature value and the average temperature value of the gas generator set after the first duration.

[0043] In this embodiment, the operating state of the mixed gas power generation system is regulated based on the difference between the temperature value and the average temperature value of the gas generator set after a first duration, including:

[0044] Based on this temperature difference, all gases in the gas generator set are heated at a preset heating rate. If the temperature of all gases in the gas generator set does not meet the constraint condition within a preset time, the heating rate is increased; if the temperature of all gases in the gas generator set meets the constraint condition within the preset time, the preset heating rate is maintained, and heating of all gases in the gas generator set continues. This constraint condition can be "heating for 10 minutes until the temperature of all gases exceeds 1000℃". Once the temperature in the gas generator set reaches the gas reaction temperature, the output power of the gas generator set can be sampled multiple times. Based on the comparison between the output power obtained from each sample and the warning power threshold, the operating status of the mixed gas power generation system is regulated, such as adjusting the heating rate and the rate at which gas is introduced into the gas generator set.

[0045] As can be seen from the above, to address the problem of low energy utilization of gas generator sets when load power changes in the prior art, this application first determines the time, type, and proportion of the target gas input to the gas generator set based on the type of gas currently supplied to the gas generator set, load operating data, and combustion stage. This method can predict load power changes and promptly add high-calorific-value gas to maintain stable power supply to the load after a first duration. Secondly, based on the predicted target gas supply rate and the total heat per unit time of the exhaust gas output from the gas generator set after the second duration, the proportion of exhaust gas used to heat the target gas is calculated. Heating the target gas based on this proportion fully utilizes the energy of the exhaust gas. Finally, the average temperature of the target gas among the target gas types is calculated after the first duration. Based on the difference between the temperature of the gas generator set after the first duration and the average temperature, the heating rate or gas supply rate of the mixed gas power generation system is adjusted. This ensures stable power supply when load power changes in the shortest time, reduces energy waste, and improves the system's energy utilization rate.

[0046] In one embodiment of this application, the load operating data includes the rated power of the load, and based on the load operating data, the type of gas currently supplied to the gas generator set, and the target gas type to be supplied to the gas generator set after a first duration of predicted combustion phase, it includes:

[0047] Determine the target power generation capacity required by the gas generator set based on the rated power of the load;

[0048] Based on the power generation efficiency characteristics of the gas types currently fed into the gas generator set at different combustion stages, candidate gas types that meet the power generation requirements are selected in combination with the target power generation capacity.

[0049] The candidate gas types are input into the prediction model to obtain the target gas types that are introduced into the gas generator set after the first duration.

[0050] In this embodiment, the rated power of the load refers to the power value specified by the load under normal operating conditions, which is the reference power parameter for load operation. Power generation efficiency characteristics refer to the efficiency of converting chemical energy into electrical energy at different stages of combustion for different target gas types. First, the target power generation capacity required by the gas generator set is determined based on the rated power of the load to match the load demand. Determining the target power generation capacity required by the gas generator set based on the rated power of the load includes: obtaining the real-time power fluctuation value of the load; dynamically adjusting the reference power generation capacity corresponding to the rated power based on the real-time power fluctuation value to obtain the target power generation capacity required by the gas generator set; wherein, the reference power generation capacity is the power generation capacity that the gas generator set should output under the rated power of the load.

[0051] Then, based on the power generation efficiency characteristics of the currently introduced gas type at different combustion stages, and combined with the target power generation, candidate gas types that can meet the power generation requirements are selected. Finally, the candidate gas types are input into the prediction model. The prediction model, based on the performance parameters of different gas types matching the rated power of the load at the corresponding combustion stages in the historical operating data of the mixed gas power generation system, determines the target gas type to be introduced into the gas generator set after the first duration from the candidate gas types. These performance parameters include the power generation conversion rate of gas combustion, the power generation per unit mass of gas, and the stability coefficient of gas supply. The prediction model calculates the comprehensive score of the performance parameters of each candidate gas type, and selects the target gas corresponding to the comprehensive score greater than the preset score threshold from all the comprehensive performance parameter scores, thus determining the target gas type corresponding to these target gases.

[0052] The comprehensive performance score can be calculated using a weighted summation method. For example, the weights of each performance parameter are determined, and different weights are assigned to the three based on the priority of the mixed gas power generation system's demand for power conversion rate, power generation per unit mass of gas, and supply stability. The three parameter values ​​of each candidate gas are normalized to obtain standardized parameter values ​​for each parameter. Each standardized parameter value is multiplied by its corresponding weight, and then summed to obtain the comprehensive performance score.

[0053] In this embodiment, the target power output required by the gas generator set is determined by the rated power of the load, ensuring that the system's power output matches the load demand and avoiding power imbalance between the supply and demand sides and the load side. Secondly, by combining the power generation efficiency characteristics of the current gas at different combustion stages to screen candidate gases, the target power can be accurately matched, reducing the cost of screening ineffective gas types. Finally, the target gas type is determined by a predictive model, improving the accuracy of gas type prediction and ensuring stable and efficient operation of the gas generator set after the first period, enhancing the system's adaptability to load changes and differences in gas characteristics.

[0054] In one embodiment of this application, based on the predicted target gas injection rate and the total heat per unit time of the exhaust gas output from the gas generator set after a second duration, the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output from the gas generator set is calculated, including:

[0055] Set the preset heating temperature threshold for the target gas;

[0056] Calculate the first difference between the preset heating temperature threshold and the initial temperature of the target gas after the second duration;

[0057] Based on the first difference and the target gas inlet rate, the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set is calculated.

[0058] In this embodiment, the ratio of the exhaust gas volume of the heated target gas to the exhaust gas volume of the gas generator set can be calculated based on a reference table of ratio, first difference, and inlet rate; or the ratio of the exhaust gas volume of the heated target gas to the exhaust gas volume of the gas generator set can be calculated using a first formula based on the first difference and the inlet rate of the target gas.

[0059] The calculation of the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set includes:

[0060] The ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set is calculated using the first formula.

[0061] The first formula is:

[0062]

[0063] in, Indicates the use of heating the first i The ratio of the volume of the target gas exhaust to the volume of the exhaust gas output from the gas generator set. Represents total heat per unit time Indicates the first i The rate at which the target gas is introduced. Indicates the first i The specific heat capacity at constant pressure of the target gas, This indicates the preset heating temperature threshold. This indicates the initial temperature value of the target gas. Indicates the first i The heat exchange efficiency coefficient of a gas. Indicates the dynamic correction factor. This represents the difference between the first and second durations. denoted by , where c represents the reference time constant and c represents the nonlinear exponent.

[0064] In this embodiment, firstly, a preset heating temperature threshold is set for the target gas. This threshold is the optimal temperature standard to ensure efficient combustion of the gas after it enters the gas generator set. Secondly, the difference between the preset heating temperature threshold and the initial temperature of the target gas after a second time period (i.e., the first difference) is calculated. This difference reflects the heat gap required to heat the target gas from its initial state to the ideal combustion temperature. Finally, the first difference, the target gas injection rate, and other parameters are substituted into the first formula for calculation to obtain the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set.

[0065] In the first formula, As a steady-state term, when the demand for gas flow rate or temperature rise (first difference) suddenly increases, the waste gas extraction ratio needs to be increased; when the heat exchange efficiency is improved, the waste gas extraction ratio can be decreased.

[0066] As a dynamic correction term, the system exhibits a heat capacity effect during heat exchange, causing temperature changes to lag behind energy input, thus requiring dynamic correction. For example, when the exhaust valve opening suddenly increases, it may take several seconds or even minutes for the gas temperature to reach the expected value. The reference time constant in the formula directly characterizes this lag effect (the longer the gas input pipe, the larger the reference time constant). Due to the nonlinear relationship between exhaust gas temperature and exhaust gas flow rate, a nonlinearity index is introduced to adjust the nonlinearity intensity.

[0067] In this embodiment, the system inertia and nonlinear effects are automatically compensated by a reference time constant and a dynamic correction factor to avoid overshoot or response lag. The nonlinear exponent is flexibly adapted to different heat transfer conditions, so that the formula maintains high accuracy in transient processes such as load change and start-up and shutdown, ultimately achieving optimal allocation of waste gas energy and improving the system's energy utilization rate.

[0068] In one embodiment of this application, the operating state of the mixed gas power generation system is regulated based on the difference between the temperature value and the average temperature value of the gas generator set after a first duration, including:

[0069] All gases in the gas generator set are heated based on the difference between the temperature value and the average temperature value of the gas generator set;

[0070] If the output power of the gas generator set obtained from f consecutive samplings is greater than the power warning threshold, then the average value of the output power from the f consecutive samplings is calculated, and the difference between the average value and the power warning threshold is used to obtain the target difference value.

[0071] The hierarchical control mechanism is determined based on the comparison between the target difference and the first value.

[0072] In this embodiment, the difference between the temperature value of the gas generator set and the average temperature value is calculated to obtain a reference value for heating the target gas. For example, if the average temperature value is 500°C and the temperature value of the gas generator set is 1600°C, then the target gas needs to be heated from 500°C to 1600°C. If the output power of the gas generator set obtained from f consecutive samplings is greater than the power warning threshold, it indicates that the combustion intensity may be too high due to overheating. In this case, the average value of the output power from the f consecutive samplings is calculated, and the difference between the average value and the power warning threshold is used to obtain the target difference value. Based on the comparison result between the target difference value and the first value, a graded control mechanism is determined. Here, f is a preset number of times.

[0073] In this embodiment, the hierarchical control mechanism is determined based on the comparison result between the target difference and the first value, including:

[0074] If the target difference is greater than the first value, then reduce the proportion of the target gas in all gases in the gas generator set or lower the heating temperature of the gas generator set.

[0075] If the target difference is less than or equal to the first value, the ratio of the volume of exhaust gas used to heat the target gas to the volume of exhaust gas output from the gas generator set is reduced by the exhaust gas valve.

[0076] In this embodiment, if the target difference is greater than the first value, it indicates that the output power of the gas generator set exceeds the standard to a severe level. In this case, reducing the proportion of the target gas in all gases in the gas generator set or lowering the heating temperature of the gas generator set can change the combustion characteristics from the source, quickly and significantly reducing the power. If the target difference is less than or equal to the first value, it indicates that the output power of the gas generator set exceeds the standard to a mild level. In this case, by reducing the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set through the exhaust gas valve, the amount of heat applied to the target gas is reduced, the combustion efficiency is lowered, and the output power is restored. At the same time, this avoids the significant impact on combustion stability caused by directly reducing the proportion of the target gas in all gases in the gas generator set.

[0077] Corresponding to the control method of the mixed gas power generation system in the above embodiment, Figure 2 This is a structural block diagram of a control device for a mixed gas power generation system according to an embodiment of this application. For ease of explanation, only the parts relevant to the embodiment of this application are shown. The mixed gas power generation system includes a gas generator set. (Reference) Figure 2 The control device 20 of the mixed gas power generation system includes: a prediction unit 21, a first calculation unit 22, a second calculation unit 23, a data acquisition unit 24, and a regulation unit 25.

[0078] The prediction unit 21 is used to predict the target gas type to be introduced into the gas generator set after the first duration based on the load operation data, the type of gas currently introduced into the gas generator set and the combustion stage, as well as the proportion of the target gas in the total gas of the gas generator set. The target gas type includes at least one type of target gas.

[0079] The first calculation unit 22 is used to calculate the introduction rate of the target gas based on the proportion of the target gas in all gases of the gas generator set.

[0080] The second calculation unit 23 is used to calculate the ratio of the volume of exhaust gas used to heat the target gas to the volume of exhaust gas output by the gas generator set based on the predicted target gas injection rate and the total heat per unit time of the exhaust gas output by the gas generator set after the second duration. The target gas is then heated based on the exhaust gas corresponding to this ratio. The second duration is shorter than the first duration, and both the second duration and the first duration are timed based on the current moment.

[0081] Data acquisition unit 24 is used to calculate the average temperature value of the target gas among the target gas types after the first time period, and to acquire the temperature value of the gas generator set after the first time period;

[0082] The control unit 25 is used to calculate the average temperature value of the target gas among the target gas types after a first time period, and to control the operating status of the mixed gas power generation system based on the difference between the temperature value of the gas generator set and the average temperature value after the first time period.

[0083] In one embodiment of this application, the load operating data includes the load's rated power. The prediction unit 21 is specifically used for:

[0084] Determine the target power generation capacity required by the gas generator set based on the rated power of the load;

[0085] Based on the power generation efficiency characteristics of the gas types currently fed into the gas generator set at different combustion stages, candidate gas types that meet the power generation requirements are selected in combination with the target power generation capacity.

[0086] The candidate gas types are input into the prediction model to obtain the target gas types that are introduced into the gas generator set after the first duration.

[0087] In one embodiment of this application, the prediction unit 21 is specifically used for:

[0088] Obtain the real-time power fluctuation value of the load; dynamically adjust the benchmark power generation power corresponding to the rated power based on the real-time power fluctuation value to obtain the target power generation power required by the gas generator set;

[0089] The benchmark power generation is the power generation output of the gas generator set under rated power load.

[0090] In one embodiment of this application, the second computing unit 23 is specifically used for:

[0091] Set the preset heating temperature threshold for the target gas;

[0092] Calculate the first difference between the preset heating temperature threshold and the initial temperature of the target gas after the second duration;

[0093] Based on the first difference and the target gas inlet rate, the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set is calculated.

[0094] In one embodiment of this application, the second computing unit 23 is specifically used for:

[0095] The ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set is calculated using the first formula, which is:

[0096]

[0097] in, Indicates the use of heating the first i The ratio of the volume of the target gas exhaust to the volume of the exhaust gas output from the gas generator set. Represents total heat per unit time Indicates the first i The rate at which the target gas is introduced. Indicates the first i The specific heat capacity at constant pressure of the target gas, This indicates the preset heating temperature threshold. This indicates the initial temperature value of the target gas. Indicates the first i The heat exchange efficiency coefficient of a gas. Indicates the dynamic correction factor. This represents the difference between the first and second durations. Indicates the reference time constant. c This represents a nonlinear exponent.

[0098] In one embodiment of this application, the control unit 25 is specifically used for:

[0099] All gases in the gas generator set are heated based on the difference between the temperature value and the average temperature value of the gas generator set;

[0100] If the output power of the gas generator set obtained from f consecutive samplings is greater than the power warning threshold, then the average value of the output power from the f consecutive samplings is calculated, and the difference between the average value and the power warning threshold is used to obtain the target difference value.

[0101] The hierarchical control mechanism is determined based on the comparison between the target difference and the first value.

[0102] In one embodiment of this application, the control unit 25 is specifically used for:

[0103] If the target difference is greater than the first value, then reduce the proportion of the target gas in all gases in the gas generator set or lower the heating temperature of the gas generator set.

[0104] If the target difference is less than or equal to the first value, the ratio of the volume of exhaust gas used to heat the target gas to the volume of exhaust gas output from the gas generator set is reduced by the exhaust gas valve.

[0105] See Figure 3 , Figure 3 This is a schematic block diagram of an electronic device provided according to an embodiment of this application. Figure 3 The electronic device 300 in this embodiment may include one or more processors 301, one or more input devices 302, one or more output devices 303, and one or more memories 304. The processors 301, input devices 302, output devices 303, and memories 304 communicate with each other via a communication bus 305. The memories 304 store computer programs, including program instructions. The processors 301 execute the program instructions stored in the memories 304. Specifically, the processors 301 are configured to invoke the program instructions to perform the functions of the units in the above-described device embodiments, for example... Figure 2 The functions of the prediction unit 21, the first calculation unit 22, the second calculation unit 23, the data acquisition unit 24, and the control unit 25 are shown.

[0106] It should be understood that, in the embodiments of this application, the processor 301 may be a central processing unit (CPU), or it may 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 any conventional processor.

[0107] Input device 302 may include a touchpad, a fingerprint sensor (for collecting the user's fingerprint information and fingerprint orientation information), a microphone, etc., and output device 303 may include a display (LCD, etc.), a speaker, etc.

[0108] The memory 304 may include read-only memory and random access memory, and provides instructions and data to the processor 301. A portion of the memory 304 may also include non-volatile random access memory.

[0109] In specific implementations, the processor 301, input device 302, and output device 303 described in the embodiments of this application can execute the implementation method described in the control method of the mixed gas power generation system provided in the embodiments of this application, or they can execute the implementation method of the electronic device described in the embodiments of this application, which will not be repeated here.

[0110] In another embodiment of this application, a computer-readable storage medium is provided. This computer-readable storage medium stores a computer program, which includes program instructions. When executed by a processor, the program instructions implement all or part of the processes in the methods described above. Alternatively, the computer program can instruct related hardware to complete the process. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include any entity or device capable of carrying computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0111] The computer-readable storage medium can be an internal storage unit of the electronic device in any of the foregoing embodiments, such as a hard disk or memory of the electronic device. The computer-readable storage medium can also be an external storage device of the electronic device, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the electronic device. Furthermore, the computer-readable storage medium can include both internal and external storage units of the electronic device. The computer-readable storage medium is used to store computer programs and other programs and data required by the electronic device. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0112] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0113] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the electronic devices and units described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0114] In the several embodiments provided in this application, it should be understood that the disclosed electronic devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces or units, or it may be an electrical, mechanical, or other form of connection.

[0115] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of this application, depending on actual needs.

[0116] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0117] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A control method for a mixed gas power generation system, characterized in that, The mixed gas power generation system includes a gas generator set; the method includes: Based on load operation data, the type of gas currently supplied to the gas generator set, the target gas type to be supplied to the gas generator set after the first combustion stage prediction, and the proportion of the target gas type to all gases in the gas generator set; The injection rate of the target gas is calculated based on the proportion of the target gas among all gases in the gas generator set. Based on the predicted inlet rate of the target gas and the total heat per unit time of the exhaust gas output by the gas generator set after the second duration, the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set is calculated, and the target gas is heated based on the exhaust gas corresponding to this ratio; the second duration is less than the first duration, and both the second duration and the first duration are timed according to the current moment; Calculate the average temperature value of the target gas among the target gas types after the first time period, and obtain the temperature value of the gas generator set after the first time period; The operating status of the mixed gas power generation system is regulated based on the difference between the temperature value of the gas generator set and the average temperature value after the first duration. The calculation of the ratio of the volume of exhaust gas used to heat the target gas to the volume of exhaust gas output from the gas generator set after the predicted injection rate of the target gas and the second time duration includes: Set a preset heating temperature threshold for the target gas; The first difference between the preset heating temperature threshold and the initial temperature of the target gas after the second duration is calculated. Based on the first difference and the inlet rate of the target gas, calculate the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set; The calculation of the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set includes: The ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set is calculated using the first formula. The first formula is: in, Indicates the use of heating the first i The ratio of the volume of the target gas exhaust to the volume of the exhaust gas output from the gas generator set. This represents the total heat generated per unit time. Indicates the first i The rate at which the target gas is introduced. Indicates the first i The specific heat capacity at constant pressure of the target gas, This indicates the preset heating temperature threshold. This indicates the initial temperature value of the target gas. Indicates the first i The heat exchange efficiency coefficient of the gas. Indicates the dynamic correction factor. This represents the difference between the first and second durations. Indicates the reference time constant. c This represents a nonlinear exponent.

2. The method as described in claim 1, characterized in that, The load operating data includes the rated power of the load, and the target gas type to be introduced into the gas generator set after a first duration of combustion stage prediction based on the load operating data, the current gas type supplied to the gas generator set, and the combustion stage prediction includes: The target power generation capacity required by the gas generator set is determined based on the rated power of the load; Based on the power generation efficiency characteristics of the gas types currently introduced into the gas generator set at different combustion stages, and in conjunction with the target power generation, candidate gas types that meet the power generation requirements are selected. The candidate gas types are input into the prediction model to obtain the target gas types that are introduced into the gas generator set after the first duration.

3. The method as described in claim 2, characterized in that, Determining the target power generation capacity required by the gas generator set based on the rated power of the load includes: Obtain the real-time power fluctuation value of the load; dynamically adjust the benchmark power generation power corresponding to the rated power based on the real-time power fluctuation value to obtain the target power generation power required by the gas generator set; The benchmark power generation is the power generation output of the gas generator set under rated power load.

4. The method as described in claim 1, characterized in that, The regulation of the operating status of the mixed gas power generation system based on the difference between the temperature value of the gas generator set and the average temperature value after a first time period includes: All gases in the gas generator set are heated based on the difference between the temperature value of the gas generator set and the average temperature value. If the output power of the gas generator set obtained from f consecutive samplings is greater than the power warning threshold, then the average value of the output power from the f consecutive samplings is calculated, and the target difference is obtained by subtracting the average value from the power warning threshold. The hierarchical control mechanism is determined based on the comparison between the target difference and the first value.

5. The method as described in claim 4, characterized in that, The step of determining the hierarchical control mechanism based on the comparison result between the target difference and the first value includes: If the target difference is greater than the first value, then the proportion of the target gas in all gases in the gas generator set is reduced or the heating temperature of the gas generator set is lowered. If the target difference is less than or equal to the first value, the ratio of the volume of exhaust gas used to heat the target gas to the volume of exhaust gas output by the gas generator set is reduced by the exhaust gas valve.

6. A control device for a mixed gas power generation system, characterized in that, The mixed gas power generation system includes a gas generator set; the device includes: The prediction unit is used to predict, based on load operation data, the type of gas currently supplied to the gas generator set and the combustion stage, the type of target gas supplied to the gas generator set after a first duration, and the proportion of the target gas among all gases in the gas generator set. The first calculation unit is used to calculate the introduction rate of the target gas based on the proportion of the target gas in all gases of the gas generator set. The second calculation unit is used to calculate the ratio of the volume of exhaust gas used to heat the target gas to the volume of exhaust gas output by the gas generator set based on the predicted injection rate of the target gas and the total heat per unit time of the exhaust gas after the second duration; and to heat the target gas based on the exhaust gas corresponding to this ratio; the second duration is less than the first duration, and both the second duration and the first duration are timed according to the current moment. The data acquisition unit is used to calculate the average temperature value of the target gas among the target gas types after the first time period, and to acquire the temperature value of the gas generator set after the first time period. The control unit is used to control the operating status of the mixed gas power generation system based on the difference between the temperature value of the gas generator set and the average temperature value after a first time period. The second calculation unit is specifically used for: Set a preset heating temperature threshold for the target gas; The first difference between the preset heating temperature threshold and the initial temperature of the target gas after the second duration is calculated. Based on the first difference and the inlet rate of the target gas, calculate the ratio of the exhaust gas volume used to heat the target gas to the exhaust gas volume output by the gas generator set; The second calculation unit is specifically used to: calculate the ratio of the volume of exhaust gas used to heat the target gas to the volume of exhaust gas output by the gas generator set using the first formula; The first formula is: in, Indicates the use of heating the first i The ratio of the volume of the target gas exhaust to the volume of the exhaust gas output from the gas generator set. This represents the total heat generated per unit time. Indicates the first i The rate at which the target gas is introduced. Indicates the first i The specific heat capacity at constant pressure of the target gas, This indicates the preset heating temperature threshold. This indicates the initial temperature value of the target gas. Indicates the first i The heat exchange efficiency coefficient of the gas. Indicates the dynamic correction factor. This represents the difference between the first and second durations. Indicates the reference time constant. c This represents a nonlinear exponent.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method as described in any one of claims 1 to 5.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 5.

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