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

Abstract

The invention 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: calculating the introduction rate of each target gas based on load operation data, the type of gas introduced into the gas generator set at present, the type of target gas introduced into the gas generator set after a first duration in a combustion stage and the proportion of the target gas, based on the introduction rate and the total heat per unit time of the exhaust gas output by the gas generator set after the second duration, the exhaust gas proportion used for heating each target gas is calculated, each target gas is heated based on the exhaust gas proportion, and the temperature value of the gas in the gas generator set is monitored in real time; and regulating and controlling the operation state of the mixed gas power generation system based on the temperature value. The proportion of gas input into the gas generator can be flexibly adjusted, and the energy utilization rate of the system is increased.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of new energy power generation, and more particularly relates to a control method and device for a mixed gas power generation system, equipment and a storage medium. BACKGROUND

[0002] Under the background of global energy structure transformation and the promotion of the "double carbon" target, efficient use of energy and clean energy development have become the core issues of sustainable development for countries. The mixed gas required by the mixed gas power generation system includes refinery tail gas generated in industrial production, coal mine gas, biogas and landfill gas in the fields of agriculture and municipal administration, and mixed gas of natural gas and renewable gas (such as hydrogen). Using the above mixed gas for power generation not only realizes the resource utilization of industrial waste and agricultural by-products and reduces greenhouse gas emissions, but also makes up for the gap in the supply of traditional fossil energy and helps diversify the energy structure.

[0003] In the prior art, the mixed gas power generation system mostly adopts a static proportioning strategy, that is, multiple different gases are mixed in a certain proportion and then directly input into a gas power generator for power generation, or another gas is input for power generation when one gas is consumed. The above-mentioned method cannot flexibly adjust the input gas when the load power changes, and has the problem of low energy utilization rate. SUMMARY

[0004] To solve the above technical problems, the application provides a control method and device for a mixed gas power generation system, equipment and a storage medium, to flexibly adjust the gas proportion input into a gas power generator and improve the energy utilization rate of the system.

[0005] The first aspect of the embodiment of the application provides a control method for a mixed gas power generation system, the mixed gas power generation system comprising a gas power generator; the method comprising: predicting, based on load operation data, a target gas type to be input into the gas power generator after a first time length based on a current gas type input into the gas power generator and a combustion stage, and a proportion of a target gas in all gases of the gas power generator in the target gas type; calculating an input rate of the target gas based on the proportion of the target gas in all gases of the gas power generator in the target gas type; calculating a proportion of a waste gas volume for heating the target gas to a total heat quantity of waste gas output by the gas power generator per unit time after a second time length based on the predicted input rate of the target gas and the total heat quantity of waste gas output by the gas power generator per unit time after the second time length, and heating the target gas based on the proportion of the waste gas; the second time length is less than the first time length, and the second time length and the first time length are both counted from the current time; calculating an average temperature value of the target gas in the target gas type after the first time length, and obtaining a temperature value of the gas power generator after the first time length. The operation state of the mixed gas power generation system is regulated based on a difference between the temperature value of the gas power generator set after the first time length and the average temperature value.

[0006] In a second aspect, the application provides a control device of a mixed gas power generation system, the mixed gas power generation system comprising a gas power generator set; the device comprising: a prediction unit configured to predict, based on the load operation data, the current gas type input into the gas power generator set, and the combustion stage, a target gas type input into the gas power generator set after a first time length, and a proportion of a target gas in the target gas type to all gases of the gas power generator set; a first calculation unit configured to calculate, based on the proportion of the target gas in the target gas type to all gases of the gas power generator set, an input rate of each target gas; a second calculation unit configured to calculate, based on the predicted input rate of the target gas and a total heat of exhaust gas output by the gas power generator set per unit time after a second time length, a proportion of an exhaust gas volume for heating the target gas to an exhaust gas volume output by the gas power generator set, and heat the target gas based on the exhaust gas corresponding to the proportion; the second time length is less than the first time length, and the second time length and the first time length are both counted from a current time; a data acquisition unit configured to calculate an average temperature value of the target gas in the target gas type after the first time length, and acquire a temperature value of the gas power generator set after the first time length; a regulation unit configured to regulate the operation state of the mixed gas power generation system based on a difference between the temperature value of the gas power generator set after the first time length and the average temperature value.

[0007] In a third aspect, the application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements the steps of the control method of the mixed gas power generation system when executing the computer program.

[0008] In a fourth aspect, the application provides a computer readable storage medium, the computer readable storage medium storing a computer program, and the computer program implements the steps of the control method of the mixed gas power generation system when executed by a processor.

[0009] The control method and device, equipment, and storage medium of the mixed gas power generation system provided by the application have the following advantages: In order to solve the problem of low energy utilization rate of the gas generator set when the load power changes in the prior art, the embodiment of the present application first determines the time of inputting the target gas into the gas generator set, the type of the target gas and the input proportion of the target gas based on the type of the gas input into the gas generator set, the load operation data and the combustion stage. In this way, when the load power changes, high-calorific-value gas can be added in time so as to maintain stable power supply of the load after the first time length. Secondly, based on the predicted input rate of the target gas and the total heat of the exhaust gas of the gas generator set per unit time after the second time length, the ratio of the exhaust gas volume for heating the target gas to the exhaust gas volume of the gas generator set is calculated. The exhaust gas corresponding to the ratio is used to heat the target gas, so that the energy of the exhaust gas can be fully utilized. Finally, the average temperature value of the target gas in the target gas type after the first time length is calculated. Based on the difference between the temperature value of the gas generator set after the first time length and the average temperature value, the heating rate or the gas input rate of the mixed gas power generation system is regulated, so that stable power supply when the load power changes can be ensured in the shortest time, energy waste is reduced and the energy utilization rate of the system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0011] Figure 1 The flowchart of the control method of the mixed gas power generation system provided by an embodiment of the present application is shown. Figure 2 The structural block diagram of the control device of the mixed gas power generation system provided by an embodiment of the present application is shown. Figure 3 The schematic block diagram of the electronic device provided by an embodiment of the present application is shown. DETAILED DESCRIPTION

[0012] In the following description, specific details such as specific system structures, techniques, etc. are presented in order to thoroughly understand the embodiments of the present application. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits and methods are omitted to avoid unnecessary details that hinder the description of the present application.

[0013] In order to make the purpose, technical solutions and advantages of the present application clearer, specific embodiments will be described below with reference to the drawings.

[0014] Referring to Figure 1 , Figure 1 A flowchart of a control method of a mixed gas power generation system according to an embodiment of the present application is provided. The mixed gas power generation system includes a gas power generator set. The method can include S101-S105.

[0015] S101: predicting a target gas type to be input into the gas power generator set after a first time length based on load operation data, a current gas type input into the gas power generator set, and a combustion stage, and a proportion of a target gas in the target gas type to all gases of the gas power generator set.

[0016] In the embodiment, the mixed gas power generation system is a system that takes the gas power generator set as the core, can input one or more gases such as natural gas, biogas, hydrogen, and synthetic gas as fuel, and drives the generator set to operate to generate power through gas combustion. The mixed gas power generation system includes the gas power generator set, and further includes a gas supply module, a mixed adjustment module, and a waste gas treatment and energy recovery module (for example, a waste heat boiler). The gas supply module can store multiple gases and deliver the multiple gases to the mixed adjustment module. The mixed adjustment module controls the proportioning of different gases and delivers the gases to the gas power generator set for combustion and power generation. At this time, the system generates high-temperature waste gas, which can be recovered by the waste heat boiler and then discharged into the air.

[0017] In order to improve the energy utilization rate of the mixed gas power generation system, the current gas type input into the gas power generator set, load operation data, and a combustion stage are first obtained in the embodiment. The current gas type input into the gas power generator set refers to the type of gas that is currently entering the gas power generator set for combustion at the current time. The gas type can be a single gas (such as natural gas or hydrogen) or a mixture of multiple gases (such as a mixed gas of natural gas and biogas). The composition directly affects the combustion efficiency and the operating state of the gas power generator set. The load operation data refers to real-time operating parameters of the load carried by the mixed gas power generation system, which usually includes but is not limited to real-time power, rated power, rated voltage, and load type of the load, and reflects the demand of the load for power generation. The combustion stage refers to the combustion state stage of the gas power generator set during operation, which is usually divided into a starting period (combustion initialization), a stable operation period (combustion state is stable, and power output is smooth), and a fuel consumption adjustment period (the gas content input into the gas power generator set is insufficient and needs to be supplemented with new gas types in time). The combustion characteristics are significantly different in different stages, such as temperature, pressure, or reaction rate. In the stable operation period, if the required power of the load increases, the type of input gas can be increased, such as increasing the high-calorific-value gas to improve the energy utilization rate of the system. In the combustion consumption adjustment period, the type of input gas can also be increased to ensure the continuity of system power generation, thereby improving the energy utilization rate.

[0018] In this embodiment, the type of gas input into the gas-fired generator set can be obtained by using a gas chromatograph, an infrared spectrometer or other gas component detection equipment. For example, the gas chromatograph separates different gases through a chromatographic column, and the thermal conductivity detector and hydrogen flame detector can quantitatively analyze the components such as hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, ethane, propane, butane, pentane, hexane, etc. The load operation data can be obtained by installing an electric energy quality analyzer on the load side to obtain parameters such as three-phase voltage, current, frequency, active power, reactive power, rated power and harmonic components. The combustion stage can be obtained by flame feature recognition or exhaust gas component analysis, which are conventional methods in the art and will not be described in detail here.

[0019] In this embodiment, the type of gas input into the gas-fired generator set, the load operation data and the combustion stage are input into a prediction model or a dynamic proportioning algorithm based on multi-objective optimization to obtain the target gas type input into the gas-fired generator set after the first time length, and the proportion of the target gas in all gases of the gas-fired generator set in the target gas type. The prediction model can be a multi-feature prediction model based on machine learning, which can be trained based on historical operation data. The dynamic proportioning algorithm based on multi-objective optimization takes the system operation target (such as maximum efficiency, minimum emission) as a constraint, calculates the optimal target gas parameters in combination with real-time working conditions, and is suitable for scenes with severe working condition fluctuations and real-time dynamic adjustment.

[0020] wherein the first time length refers to the time interval from the current time to the time when the predicted target gas starts to be input into the gas-fired generator set. The target gas type refers to the type of gas input into the gas-fired generator set after the first time length, which can be the same as or different from the current gas type, contains at least one gas, and meets the load demand and unit operation conditions after the first time length. The proportion of the target gas in the target gas type refers to the percentage of the volume (or mass) of the target gas in all gases in the gas-fired generator set when the target gas is input into the gas-fired generator set, which is used to determine the specific proportion of the mixed gas and ensure the combustion efficiency and safety.

[0021] S102: Calculate the input rate of the target gas based on the proportion of the target gas in all gases of the gas-fired generator set in the target gas type.

[0022] In the embodiment, the input rate refers to the amount of a certain target gas input into the gas generator set per unit time, which is usually expressed in terms of volume rate or mass rate. The system calculates the total gas input rate to meet the power generation demand based on the target power generation of the gas generator set after the first time length and the average calorific value of the target gas type. Based on the total gas input rate, the individual input rate of the target gas is calculated according to the proportion of the target gas in all gases of the gas generator set. For example, if the total gas input rate is 100 m³ / h, the target gas type is hydrogen, and the proportion is 30%, then the input rate of hydrogen is 100 m³ / h x 30% = 30 m³ / h.

[0023] S103: Based on the predicted input rate of the target gas and the total heat of the exhaust gas output by the gas generator set per unit time after the second time length, the proportion of the exhaust gas volume used for heating 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 corresponding exhaust gas.

[0024] In the embodiment, the input rate refers to the amount of a certain target gas input into the gas generator set per unit time, which is usually expressed in terms of volume rate or mass rate. The system calculates the total gas input rate to meet the power generation demand based on the target power generation of the gas generator set after the first time length and the average calorific value of the target gas type. Based on the total gas input rate, the individual input rate of the target gas is calculated according to the proportion of the target gas in all gases of the gas generator set. For example, if the total gas input rate is 100 m³ / h, the target gas type is hydrogen, and the proportion is 30%, then the input rate of hydrogen is 100 m³ / h x 30% = 30 m³ / h.

[0025] In the embodiment, after determining the target gas to be delivered to the gas generator set, since the initial temperature value of the target gas itself is small, if the target gas is directly input into the gas generator set after the first time length, the time length for heating the target gas will be longer than that of preheating the target gas and then inputting it into the gas generator set, which will affect the energy utilization rate of the system and the output power of the load. Therefore, in the embodiment, after determining the first time length for inputting the target gas into the gas generator set, a certain period of time before the first time length can be used for preheating the target gas, which is the time difference between the first time length and the second time length. For example, the current time is 8:00, the time after the first time length is 8:20, and the time after the second time length is 8:10, i.e. the time period between 8:10 and 8:20 is used for preheating the target gas.

[0026] The total heat of the exhaust gas output by the gas generator set per unit time refers to the total heat released by the exhaust gas generated by the gas generator set per unit time after the second time length, which reflects the available energy scale of the exhaust gas waste heat. These exhaust gases are mainly used for secondary utilization of resources through waste heat boilers or steam power generation, and a certain proportion of the exhaust gas can be used for preheating the target gas. In the embodiment, based on the predicted input rate of the target gas and the total heat of the exhaust gas output by the gas generator set per unit time after the second time length, the proportion of the exhaust gas volume used for heating 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 corresponding exhaust gas; or the proportion can be pre-calculated and set based on the fixed heating energy demand of the target gas.

[0027] S104: Calculate the average temperature value of the target gas in the target gas species after the first time length, and obtain the temperature value of the gas turbine generator set after the first time length.

[0028] In this embodiment, the average temperature of the target gas is calculated based on the real-time temperature of the target gas after the first time length (which can be collected by a pipeline temperature sensor). The temperature values of the key parts of the gas turbine generator set at the same time node are collected, such as the wall temperature of the combustion chamber or the exhaust temperature, etc. The temperature values of these parts are taken as the temperature value of the gas turbine generator set after the first time length.

[0029] S105: Based on the difference between the temperature value of the gas turbine generator set after the first time length and the average temperature value, the running state of the mixed gas power generation system is regulated.

[0030] In this embodiment, the running state of the mixed gas power generation system is regulated based on the difference between the temperature value of the gas turbine generator set after the first time length and the average temperature value, including: Based on the difference, all the gases in the gas turbine generator set are heated according to the preset heating rate. If the temperature values of all the gases in the gas turbine generator set do not meet the constraint condition within the preset time length, the heating rate is increased. If the temperature values of all the gases in the gas turbine generator set meet the constraint condition within the preset time length, the preset heating rate remains unchanged, and the heating of all the gases in the gas turbine generator set continues. The constraint condition can be "heat for 10 minutes, and the temperature values of all the gases are greater than 1000℃". When the temperature value in the gas turbine generator set reaches the temperature value of the gas reaction, the output power of the gas turbine generator set can be sampled multiple times. Based on the comparison result of the output power obtained by each sampling and the early warning power threshold, the running state of the mixed gas power generation system is regulated, such as adjusting the heating rate and the rate of gas input into the gas turbine generator set, etc.

[0031] From the above, in order to solve the problem of low energy utilization rate of the gas generator set when the load power changes in the prior art, first, based on the type of gas currently input into the gas generator set, the load operation data and the combustion stage, the time of inputting the target gas into the gas generator set, the type of the target gas and the input proportion of the target gas are determined. This way can predict the load power change, and timely add high calorific value gas to maintain the stable power supply of the load after the first time length. Secondly, based on the predicted input rate of the target gas and the total heat of the exhaust gas per unit time of the gas generator set after the second time length, the proportion of the exhaust gas for heating the target gas is calculated, and the target gas is heated based on the exhaust gas proportion, which can fully utilize the energy of the exhaust gas. Finally, the average temperature value of the target gas in the target gas type after the first time length is calculated, and the heating rate or gas input rate of the mixed gas power generation system is regulated based on the difference between the temperature value of the gas generator set after the first time length and the average temperature value, which can ensure stable power supply when the load power changes in the shortest time, reduce energy waste and improve the energy utilization rate of the system.

[0032] In an embodiment of the present application, the load operation data includes the rated power of the load, and the target gas type input into the gas generator set after the first time length is predicted based on the load operation data, the type of gas currently input into the gas generator set and the combustion stage, including: determining the target power generation power required by the gas generator set according to the rated power of the load; screening candidate gas types that meet the power generation demand based on the power generation efficiency characteristics of the type of gas currently input into the gas generator set in different combustion stages, in combination with the target power generation power; inputting the candidate gas types into a prediction model to obtain the target gas type input into the gas generator set after the first time length.

[0033] In this embodiment, the rated power of the load refers to the power value specified by the load under normal working conditions, which is the reference power parameter of the load operation. The power generation efficiency characteristic refers to the efficiency performance rule of converting chemical energy into electrical energy in different combustion stages of different target gas types. First, the target power generation power required by the gas generator set is determined according to the rated power of the load to match the load demand. The target power generation power required by the gas generator set is determined according to the rated power of the load, including: obtaining the real-time power fluctuation value of the load; dynamically adjusting the reference 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; wherein the reference power generation power is the power generation power that the gas generator set should output under the rated power of the load.

[0034] Then, according to the power generation efficiency characteristics of the current gas type in different combustion stages, combined with the target power generation power, the candidate gas type that can meet the power generation demand is screened out. Finally, the candidate gas type is input into the prediction model, and the prediction model determines the target gas type of the gas turbine unit after the first time period according to the efficiency parameters of different gas types in the historical operation data of the mixed gas power generation system corresponding to the load rated power in the combustion stage. The efficiency parameters include the power generation conversion rate of gas combustion, the power generation capacity per unit mass of gas, and the stability coefficient of gas supply. The prediction model selects the target gas corresponding to the comprehensive score greater than the preset score threshold from all the efficiency parameter comprehensive scores by calculating the comprehensive score of each candidate gas type, and determines the target gas type corresponding to the target gas.

[0035] Among them, the efficiency parameter comprehensive score can be calculated by weighted summation method. For example, the weights of each efficiency parameter are determined, and different weights are given to the power generation conversion rate, the power generation capacity per unit mass of gas, and the supply stability according to the demand priority of the mixed gas power generation system. The normalized parameter values of the three parameter values of each candidate gas are obtained by normalizing the three parameter values respectively; each normalized parameter value is multiplied by the corresponding weight, and then summed to obtain the efficiency parameter comprehensive score.

[0036] In this embodiment, the target power generation power required by the gas turbine unit is determined by the load rated power, which ensures that the power generation output of the system matches the load demand and avoids the power imbalance between the supply and demand sides and the load side. Secondly, the candidate gas is screened in combination with the power generation efficiency characteristics of the current gas in different combustion stages, which can accurately match the target power and reduce the screening cost of invalid gas types. The prediction model determines the target gas type, which improves the accuracy of gas type prediction, ensures the stable and efficient operation of the gas turbine unit after the first time period, and enhances the adaptability of the system to load changes and gas property differences.

[0037] In an embodiment of the present application, based on the predicted target gas input rate and the total heat quantity of the exhaust gas output by the gas turbine unit per unit time after the second time period, the ratio of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas turbine unit is calculated, including: setting a preset heating temperature threshold of the target gas; calculating a first difference between the preset heating temperature threshold and the initial temperature of the target gas after the second time period; based on the first difference and the input rate of the target gas, calculating the ratio of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas turbine unit.

[0038] In the embodiment, the ratio of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas generator set can be calculated based on a proportional-first difference-inlet rate table, or the ratio of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas generator set can be calculated by using the first formula based on the first difference and the inlet rate of the target gas.

[0039] The ratio of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas generator set is calculated, including: The ratio of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas generator set is calculated by using the first formula. The first formula is:

[0040] Wherein, The ratio of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas generator set, i The total heat quantity per unit time, The inlet rate of the target gas, The specific heat capacity of the target gas at constant pressure, i The preset heating temperature threshold, The initial temperature value of the target gas, i The heat exchange efficiency coefficient of the target gas, The dynamic correction factor, The difference between the first time length and the second time length, The reference time constant, and c represents a nonlinear index. i

[0041] In the embodiment, first, a preset heating temperature threshold is set for the target gas, which is the best temperature standard to ensure that the gas can be efficiently combusted after entering the gas generator set. Second, the difference between the preset heating temperature threshold of the target gas after the second time length and the initial temperature value of the target gas (i.e., the first difference) is calculated, which can reflect the heat gap required to heat the target gas from the initial state to the ideal combustion temperature. Finally, the first difference, the inlet rate of the target gas, and other parameters are substituted into the first formula for calculation to obtain the ratio of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas generator set.

[0042] In the first formula, The steady-state term is used when the gas flow or temperature rise (first difference) requirement suddenly increases, and the exhaust gas extraction ratio needs to be increased; when the heat exchange efficiency is improved, the exhaust gas extraction ratio can be reduced.

[0043] ​​​​ For dynamic correction term, the system has heat capacity effect when heat exchange is carried out, and the temperature change lags behind the energy input, so dynamic correction is needed. For example, when the exhaust valve opening suddenly increases, the gas temperature needs several seconds or even several minutes to reach the expected value, and the reference time constant in the formula can directly represent the lag effect (the longer the gas input pipeline, the larger the reference time constant). Due to the nonlinear relationship between exhaust gas temperature and exhaust gas flow, a nonlinear index is introduced to adjust the nonlinear strength.

[0044] In this embodiment, the inertia and nonlinear effect of the system are automatically compensated by the reference time constant and the dynamic correction factor, avoiding overshoot or response lag; the nonlinear index is flexibly adapted to different heat transfer conditions, so that the formula still maintains high precision in transient processes such as variable load, start and stop, and finally realizes the optimal allocation of exhaust gas energy and improves the energy utilization rate of the system.

[0045] In an embodiment of the present application, the operating state of the mixed gas power generation system is regulated based on the difference between the temperature value of the gas power generation unit after the first time length and the average temperature value, including: Heating all gases in the gas power generation unit based on the difference between the temperature value of the gas power generation unit and the average temperature value; If the output power of the gas power generation unit obtained by continuous f times sampling is greater than the power warning threshold, calculate the average value of the output power of the continuous f times sampling, and obtain the target difference value by subtracting the average value from the power warning threshold; Determine the hierarchical regulation mechanism based on the comparison result of the target difference value and the first numerical value.

[0046] In this embodiment, the difference between the temperature value of the gas power generation unit and the average temperature value is calculated to obtain the reference value of the target gas that needs to be heated. For example, the average temperature value is 500℃, and the temperature value of the gas power generation unit is 1600℃, so the target gas needs to be heated from 500℃ to 1600℃. If the output power of the gas power generation unit obtained by continuous f times sampling is greater than the power warning threshold, it means that the combustion intensity may be too high due to excessive heating, so the average value of the output power of the continuous f times sampling is calculated, and the target difference value is obtained by subtracting the average value from the power warning threshold. The hierarchical regulation mechanism is determined based on the comparison result of the target difference value and the first numerical value. Wherein, f is a preset number of times.

[0047] In this embodiment, the hierarchical regulation mechanism is determined based on the comparison result of the target difference value and the first numerical value, including: If the target difference value is greater than the first numerical value, reduce the proportion of the target gas in all gases in the gas power generation unit or reduce the heating temperature of the gas power generation unit; If the target difference value is less than or equal to the first value, the proportion of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas generator set is reduced through the exhaust valve.

[0048] In the embodiment, if the target difference value is greater than the first value, it indicates that the over-standard degree of the output power of the gas generator set reaches a serious level. At this time, reducing the proportion of the target gas to all the gases in the gas generator set or reducing the heating temperature of the gas generator set can change the combustion characteristics from the source, rapidly and significantly reduce the power. If the target difference value is less than or equal to the first value, it indicates that the over-standard degree of the output power of the gas generator set reaches a mild level. At this time, the proportion of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas generator set is reduced through the exhaust valve, the heating amount of the target gas is reduced, the combustion efficiency is reduced, the output power is adjusted, and the impact on the combustion stability caused by directly reducing the proportion of the target gas to all the gases in the gas generator set is avoided.

[0049] A control method of a mixed gas power generation system corresponding to the above embodiment, Figure 2 A structural block diagram of a control device of a mixed gas power generation system provided by an embodiment of the present application is shown. For ease of illustration, only parts related to the embodiments of the present application are shown. The mixed gas power generation system includes a gas generator set. Referring to 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.

[0050] The prediction unit 21 is configured to predict, based on the load operation data, the current gas type input into the gas generator set, and the combustion stage, the target gas type input into the gas generator set after a first time length, and the proportion of the target gas in all the gases of the gas generator set in the target gas type, the target gas type including at least one type of target gas. The first calculation unit 22 is configured to calculate, based on the proportion of the target gas in all the gases of the gas generator set in the target gas type, the input rate of the target gas. The second calculation unit 23 is configured to calculate, based on the predicted input rate of the target gas and the total heat per unit time of the exhaust gas output by the gas generator set after a second time length, the proportion of the exhaust gas volume for heating the target gas to the exhaust gas volume output by the gas generator set, and heat the target gas based on the proportion of the exhaust gas; the second time length is less than the first time length, and both the second time length and the first time length are counted from the current time. The data acquisition unit 24 is configured to calculate the average temperature value of the target gas in the target gas type after the first time length, and acquire the temperature value of the gas generator set after the first time length. The control unit 25 is used to calculate the average temperature value of the target gas in the target gas type after the first period of time, and control the operating state of the mixed gas power generation system based on the difference between the temperature value of the gas generator set after the first period of time and the average temperature value.

[0051] In one embodiment of the present application, the load operation data includes the rated power of the load. The prediction unit 21 is specifically configured to: Determine the target power generation required by the gas generator set based on the rated power of the load; Based on the power generation efficiency characteristics of the gas type currently fed into the gas-fired generator set at different combustion stages and combined with the target power generation, candidate gas types that meet the power generation needs are screened; The candidate gas types are input into the prediction model to obtain the target gas type introduced into the gas generator set after the first time period.

[0052] In one embodiment of the present application, the prediction unit 21 is specifically configured to: Obtain the real-time power fluctuation value of the load; dynamically adjust the reference 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; Among them, the benchmark power generation is the power generation power that the gas generator set should output when the load is at rated power.

[0053] In one embodiment of the present application, the second calculation unit 23 is specifically configured to: Setting a preset heating temperature threshold for the target gas; Calculating a first difference between a preset heating temperature threshold and an initial temperature of the target gas after a second period of time; Based on the first difference and the introduction rate of the target gas, a 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.

[0054] In one embodiment of the present application, the second calculation unit 23 is specifically configured to: 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:

[0055] in, Indicates that it is used to heat i The ratio of the exhaust volume of the target gas to the exhaust volume output by the gas generator set, Indicates the total heat per unit time Indicates the i The target gas introduction rate, Indicates the i The specific heat capacity of the target gas at constant pressure, Indicates the preset heating temperature threshold, represents the initial temperature value of the target gas, Indicates the i The heat exchange efficiency coefficient of the gas is represents the dynamic correction factor, Indicates the difference between the first duration and the second duration. represents the reference time constant, c Represents the nonlinear index.

[0056] In one embodiment of the present application, the control unit 25 is specifically configured to: heating all gases in the gas generator set based on a difference between a temperature value of the gas generator set and an average temperature value; If the output power of the gas generator set obtained by continuous f sampling is greater than the power warning threshold, the average value of the output power of the continuous f sampling is calculated, and the target difference is obtained by subtracting the average value from the power warning threshold; A hierarchical control mechanism is determined based on a comparison result between the target difference and the first value.

[0057] In one embodiment of the present application, the control unit 25 is specifically configured to: If the target difference is greater than the first value, 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; If the target difference is less than or equal to the first value, 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 reduced through the exhaust valve.

[0058] See also Figure 3 , Figure 3 This is a schematic block diagram of an electronic device provided in one embodiment of the present application. Figure 3 The electronic device 300 in the embodiment shown 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 memory 304 is used to store computer programs, which include program instructions. The processor 301 is used to execute the program instructions stored in the memory 304. The processor 301 is configured to call the program instructions to execute the functions of each unit in the above-mentioned device embodiments, such as 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.

[0059] It should be understood that, in the embodiments of the present application, the processor 301 can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0060] The input device 302 can include a touchpad, a fingerprint collection sensor (for collecting fingerprint information and direction information of a fingerprint of a user), a microphone, etc., and the output device 303 can include a display (LCD, etc.), a speaker, etc.

[0061] The memory 304 can include read-only memory and random access memory, and provide instructions and data for the processor 301. A portion of the memory 304 can also include non-volatile random access memory.

[0062] In specific implementations, the processor 301, the input device 302 and the output device 303 described in the embodiments of the present application can execute the implementation manners described in the control method of the hybrid gas power generation system provided by the embodiments of the present application, and can also execute the implementation manners of the electronic device described in the embodiments of the present application, which will not be described here.

[0063] In another embodiment of the present application, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program. The computer program includes program instructions, and the program instructions are executed by a processor to implement all or part of the processes in the above-mentioned embodiment methods. The computer program can also be used to instruct related hardware to complete, and the computer program can be stored in a computer readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable file or some intermediate form, etc. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0064] The computer readable storage medium can be an internal storage unit of the electronic device of any of the preceding embodiments, such as a hard disk or a 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, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, or the like provided on the electronic device. Further, the computer readable storage medium can include both the internal storage unit and the external storage device of the electronic device. The computer readable storage medium is used to store the computer program 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.

[0065] Those skilled in the art can understand that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized by electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been described in general terms in the foregoing description. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0066] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the electronic device and the units described above can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0067] In several embodiments provided in the present application, it should be understood that the disclosed electronic device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces or units, and can also be electrical, mechanical or other forms of connection.

[0068] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e. can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0069] In addition, each of the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0070] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A control method of a mixed gas power generation system, characterized by, The mixed gas power generation system comprises a gas generator set; the method comprises: predicting a target gas type to be input into the gas generator set after a first time period based on load operation data, a current gas type input into the gas generator set, and a combustion stage; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; 2. The method of claim 1, wherein, calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; 3. The method of claim 2, wherein, calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; 4. The method of claim 1, wherein, calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; 5. The method of claim 4, wherein, calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target gas type to all gases of the gas generator set; calculating a proportion of a target gas in the target calculating, by using a first formula, a proportion of a volume of waste gas used for heating the target gas to a volume of waste gas output by the gas generator set; the first formula is: wherein, represents a ratio of a volume of the waste gas for heating the first i target gas to a volume of the waste gas output by the gas generator set, represents a total heat per unit time, represents a flow rate of the first i target gas, represents a specific heat capacity of the first i target gas at constant pressure, represents a preset heating temperature threshold value, represents an initial temperature value of the target gas, represents a heat exchange efficiency coefficient of the first i gas, represents a dynamic correction factor, represents a difference between the first time length and the second time length, represents a reference time constant, c represents a non-linear index.

6. The method of claim 1, wherein, the difference between the temperature value of the gas generator set after the first time length and the average temperature value is used to regulate the operation state of the mixed gas power generation system, including: heating all the gas in the gas generator set 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 by continuous f times of sampling is greater than a power warning threshold, calculating an average value of the output power obtained by continuous f times of sampling, and obtaining a target difference value by subtracting the average value from the power warning threshold; determining a hierarchical regulation mechanism based on a comparison result of the target difference value and a first value.

7. The method of claim 6, wherein, the hierarchical regulation mechanism is determined based on the comparison result of the target difference value and the first value, including: if the target difference value is greater than the first value, reducing the proportion of the target gas in all the gas in the gas generator set or reducing the heating temperature of the gas generator set; if the target difference value is less than or equal to the first value, reducing the proportion of the volume of waste gas used for heating the target gas to the volume of waste gas output by the gas generator set by a waste gas valve.

8. A control device for a mixed gas power generation system, characterized by comprising: The mixed gas power generation system includes a gas generator set; the device includes: a prediction unit configured to predict, based on load operation data, a type of target gas to be input into the gas generator set after a first time length and a proportion of the target gas in all the gas in the gas generator set, and a combustion stage and a type of gas currently input into the gas generator set; a first calculation unit configured to calculate, based on the proportion of the target gas in all the gas in the gas generator set, an input rate of the target gas; a second calculation unit configured to calculate, based on the predicted input rate of the target gas and total heat per unit time of waste gas output by the gas generator set after a second time length, a proportion of a volume of waste gas used for heating the target gas to a volume of waste gas output by the gas generator set, and heat the target gas based on the proportion of the volume of waste gas; the second time length is less than the first time length, and the second time length and the first time length are both counted from the current time; a data acquisition unit configured to calculate an average temperature value of the target gas in the target gas type after the first time length, and acquire a temperature value of the gas generator set after the first time length; a regulation unit configured to regulate the operation state of the mixed gas power generation system based on the difference between the temperature value of the gas generator set after the first time length and the average temperature value.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, The processor executes the computer program to implement the steps of the method of any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, the computer program comprising instructions that, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 9. The computer program is executed by the processor to implement the steps of the method of any one of claims 1 to 7.

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