Control method and device for circulating water system of waste incineration power plant

Abstract

The application is suitable for the technical field of power plant circulating water control, and particularly relates to a waste incineration power plant circulating water system control method and device, comprising: obtaining a first circulating water control parameter; based on auxiliary information, analyzing the first circulating water control parameter in a first control dimension to obtain a second circulating water control parameter; determining a deviation value at each monitoring time node according to the deviation between the first circulating water control parameter and a preset control parameter; based on the deviation value, analyzing the second circulating water control parameter in a second control dimension to obtain an optimized target circulating water control parameter, and then adjusting the parameters of the circulating water cooling equipment. The method provided by the application can solve the problem that in the traditional waste incineration power plant circulating water system control process, in the scene where core information cannot be stably obtained, the control parameters for the circulating water system do not match the actual situation, resulting in low heat energy utilization efficiency of the circulating water.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of control of circulating water in a power plant, and particularly relates to a circulating water system control method and device for a waste incineration power plant. BACKGROUND

[0002] A waste incineration power plant is a facility that incinerates domestic waste, industrial solid waste and the like at high temperature, and uses heat generated by the incineration to drive a steam turbine to generate power. The circulating water in the waste incineration power plant is a medium for cooling a condenser in the steam turbine power generation to take away heat released by condensation of steam, thereby maintaining the thermal efficiency of the steam turbine.

[0003] In the conventional control process of the circulating water system of the waste incineration power plant, water quality parameters, outlet water temperature, water replenishment flow and the like are combined or fixedly associated as the final operation control parameters of the circulating water system. However, in a scenario where the water quality parameters cannot be stably obtained (i.e., in a scenario where the water quality parameters are prone to failure), such as a special scenario where pipe fouling blocks the collection of water quality parameters, the control parameters for the circulating water system will not match the actual situation, resulting in low thermal energy utilization efficiency of the circulating water. SUMMARY

[0004] The embodiments of the present application provide a circulating water system control method and device for a waste incineration power plant, which can solve the problem of low thermal energy utilization efficiency of the circulating water caused by the mismatch between the control parameters for the circulating water system and the actual situation in a scenario where core information cannot be stably obtained in the conventional control process of the circulating water system of the waste incineration power plant.

[0005] In a first aspect, the embodiments of the present application provide a circulating water system control method for a waste incineration power plant, comprising:

[0006] obtaining a first circulating water control parameter to be optimized corresponding to a circulating water system; wherein the first circulating water control parameter is determined according to preliminary process calculation based on basic information obtained by the circulating water system; and the first circulating water control parameter is a control parameter determined at each monitoring time node in a current control period;

[0007] analyzing the first circulating water control parameter in a first control dimension based on auxiliary information obtained by the circulating water system, to obtain a second circulating water control parameter corresponding to the circulating water system;

[0008] For the first circulating water control parameter determined at each monitoring time node in the current control period, a deviation value at each monitoring time node is determined according to the deviation between the first circulating water control parameter and a preset control parameter; wherein the preset control parameter is a target circulating water control parameter determined in a previous control period.

[0009] perform analysis on the second circulating water control parameter in a second control dimension based on the deviation value, to obtain an optimized target circulating water control parameter;

[0010] adjust parameters of the circulating water cooling equipment according to the optimized target circulating water control parameter.

[0011] The technical solutions described above in the embodiments of the present application have at least the following technical effects:

[0012] The method for controlling a circulating water system of a waste incineration power plant provided in the present application obtains a first circulating water control parameter to be optimized corresponding to the circulating water system. Analysis is performed on the first circulating water control parameter in a first control dimension based on auxiliary information obtained by the circulating water system, to obtain a second circulating water control parameter corresponding to the circulating water system. For the first circulating water control parameter determined at each monitoring time node in a current control period, a deviation value at each monitoring time node is determined according to a deviation between the first circulating water control parameter and a corresponding preset control parameter. Analysis is performed on the second circulating water control parameter in a second control dimension based on the deviation value, to obtain an optimized target circulating water control parameter. Parameters of the circulating water cooling equipment are adjusted according to the optimized target circulating water control parameter. The method provided in the present application can not rely on water quality parameters that are subject to failure, and can perform analysis on the circulating water control parameter determined by preliminary process calculation in the first control dimension, or adjust the second circulating water control parameter according to a deviation between the target circulating water control parameter determined in a previous control period and the first circulating water control parameter, to avoid deviation accumulation caused by fluctuations in the current control period, so that a circulating water control parameter that matches actual conditions is ultimately obtained, which helps to improve the thermal energy utilization efficiency of the circulating water.

[0013] In a possible implementation form of the first aspect, the deviation between the first circulating water control parameter and the corresponding preset control parameter is a first deviation, and the analysis performed on the second circulating water control parameter in the second control dimension based on the deviation value to obtain the optimized target circulating water control parameter includes:

[0014] In the case of detecting fluctuations in the thermal load of the incinerator, a second deviation is obtained based on the preset control parameter and the second circulating water control parameter, and the second deviation is used to reflect a deviation caused by non-thermal load factors.

[0015] Analysis is performed on the second circulating water control parameter in the second control dimension based on the first deviation and the second deviation, to obtain the optimized target circulating water control parameter, and the difference between the first deviation and the second deviation is used to reflect the offset effect of thermal load adjustment on the original deviation.

[0016] In a possible implementation manner of the first aspect, the second circulating water control parameter comprises a second flow control parameter and a second temperature control parameter, and the analysis of the second circulating water control parameter in a second control dimension based on the first deviation and the second deviation to obtain the optimized target circulating water control parameter comprises:

[0017] adjusting the second temperature control parameter based on the first deviation and the second deviation to obtain a temperature adjustment control parameter in the optimized target circulating water control parameter;

[0018] adjusting the second flow control parameter based on the first deviation and the second deviation to obtain a flow adjustment control parameter in the optimized target circulating water control parameter.

[0019] In a possible implementation manner of the first aspect, the analysis of the second circulating water control parameter in a second control dimension based on the deviation value to obtain the optimized target circulating water control parameter comprises:

[0020] In a case where it is detected that the heat load of the incinerator is stable, for each monitoring time node in a current control period, the optimization information corresponding to the monitoring time node is determined according to the deviation value corresponding to the monitoring time node;

[0021] analyzing and processing the optimization information corresponding to each monitoring time node in the current control period to obtain a target adjustment deviation corresponding to the current control period;

[0022] analyzing the second circulating water control parameter in a second control dimension corresponding to a target monitoring time node based on the target adjustment deviation to obtain the optimized target circulating water control parameter corresponding to the current control period, wherein the target monitoring time node is one monitoring time node in the current control period.

[0023] In a possible implementation manner of the first aspect, the method further comprises:

[0024] in a case where the auxiliary information is valid information, performing the step of analyzing the first circulating water control parameter in a first control dimension based on the auxiliary information obtained by the circulating water system to obtain the second circulating water control parameter corresponding to the circulating water system.

[0025] In a possible implementation manner of the first aspect, the analysis of the first circulating water control parameter in a first control dimension based on the auxiliary information obtained by the circulating water system to obtain the second circulating water control parameter corresponding to the circulating water system comprises:

[0026] Determine the adjustment data corresponding to the circulating water system based on the load deviation information of the waste incinerator in the auxiliary information.

[0027] Determine the adjustment amount based on the adjustment data.

[0028] Perform analysis on the first circulating water control parameter in the first control dimension based on the adjustment amount, to obtain the second circulating water control parameter corresponding to the circulating water system.

[0029] In a possible implementation manner of the first aspect, the first circulating water control parameter is at least one of flow rate and temperature.

[0030] In a possible implementation manner of the first aspect, the analysis on the first circulating water control parameter in the first control dimension based on the adjustment amount, to obtain the second circulating water control parameter corresponding to the circulating water system, includes:

[0031] Perform analysis on the flow rate in the first circulating water control parameter in the first control dimension based on the adjustment amount, to obtain the second circulating water control parameter; and / or,

[0032] Perform analysis on the temperature in the first circulating water control parameter in the first control dimension based on the adjustment amount, to obtain the second circulating water control parameter.

[0033] In a possible implementation manner of the first aspect, the adjusting the parameters of the circulating water cooling equipment according to the optimized target circulating water control parameter includes:

[0034] Convert the optimized target circulating water control parameter into an electrical signal, and output the electrical signal to the circulating water cooling equipment, to adjust the parameters of the circulating water cooling equipment.

[0035] In a second aspect, the embodiments of the present application provide a circulating water system control system of a waste incineration power plant, which is applied to a circulating water system control device of a waste incineration power plant, and is used to implement the circulating water system control method of any one of the first aspect.

[0036] An obtaining unit is configured to obtain a first circulating water control parameter to be optimized corresponding to a circulating water system; wherein the first circulating water control parameter is determined according to preliminary process calculation based on basic information of the circulating water system; and the first circulating water control parameter is a control parameter determined at each monitoring time node in a current control period.

[0037] The analysis unit is used to analyze the first circulating water control parameters in a first control dimension based on the auxiliary information obtained from the circulating water system, to obtain the second circulating water control parameters corresponding to the circulating water system; wherein, the auxiliary information is used to reflect the heat load of the waste incinerator; the auxiliary information is calculated based on the waste processing volume, the lower heating value of the waste, and the boiler thermal efficiency; the analysis in the first control dimension is used to analyze the matching dimension between the heat load of the waste incinerator and the first circulating water control parameters;

[0038] The calculation unit is used to determine the deviation value at each monitoring time node for the first circulating water control parameter determined at each monitoring time node within the current control period, based on the deviation between the first circulating water control parameter and the corresponding preset control parameter; wherein, the preset control parameter is the target circulating water control parameter determined in the previous control period.

[0039] An optimization unit is used to perform a second control dimension analysis on the second circulating water control parameters based on the deviation value, and obtain optimized target circulating water control parameters.

[0040] The adjustment unit is used to adjust the parameters of the circulating water cooling equipment according to the optimized target circulating water control parameters.

[0041] Thirdly, embodiments of this application provide a control device for a circulating water system of a waste incineration power plant, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the waste incineration power plant circulating water system control method described in any of the first aspects above.

[0042] It is understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0043] 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.

[0044] Figure 1 This is a schematic flowchart of a waste-to-energy plant circulating water system control method provided in an embodiment of this application;

[0045] Figure 2 This is a timing diagram of the operation of a waste-to-energy plant circulating water system control method provided in an embodiment of this application;

[0046] Figure 3 This is a schematic diagram of the structure of the circulating water system control system of a waste incineration power plant provided in the embodiments of this application;

[0047] Figure 4 This is a schematic diagram of the structure of the control device for the circulating water system of a waste incineration power plant provided in the embodiments of this application. Detailed Implementation

[0048] 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.

[0049] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0050] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0051] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if the described condition or event is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once the described condition or event is detected," or "in response to the detection of the described condition or event."

[0052] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0053] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0054] In related technologies, waste-to-energy plants are facilities that treat municipal solid waste and industrial solid waste by incinerating them at high temperatures, using the heat generated to drive steam turbines to generate electricity. The circulating water in a waste-to-energy plant serves as a cooling medium for the condenser in the steam turbine, removing the heat released during steam condensation and thus maintaining the steam turbine's thermal efficiency.

[0055] In traditional waste-to-energy incineration plant circulating water system control, water quality parameters are often combined with data such as outlet water temperature and makeup water flow rate, or linked by fixed logic, as the final operating control parameters for the circulating water system. However, in scenarios where water quality parameters cannot be reliably obtained (i.e., scenarios where water quality parameters are prone to failure), such as pipe scaling causing water quality parameter acquisition failure, or circulating water quality sensor malfunctions, the control parameters for the circulating water system may not match the actual situation, leading to low thermal energy utilization efficiency of the circulating water.

[0056] In traditional technologies, the heat transfer coefficient can be calculated from the acquired water quality parameters, and then the operating control parameters can be calculated by combining data such as outlet water temperature and makeup water flow rate. However, this method is only suitable when water quality parameters can be obtained normally. In scenarios where water quality parameter acquisition fails due to pipe scaling or malfunction of the circulating water quality sensor, the control parameters calculated using this method do not match the actual situation, resulting in low thermal energy utilization efficiency of the circulating water.

[0057] For example, over time, scale can accumulate on sensor probes, sampling ports, and other areas, directly covering or isolating the sensor's sensing or measuring surface, rendering the acquired water quality parameters invalid. Alternatively, malfunctions in circulating water quality sensors can also lead to invalid water quality parameters.

[0058] To address the aforementioned issues, this application provides a method and apparatus for controlling the circulating water system of a waste incineration power plant.

[0059] This method involves acquiring the first circulating water control parameters to be optimized for the circulating water system. Based on auxiliary information acquired from the circulating water system, the first circulating water control parameters are analyzed in a first control dimension to obtain the second circulating water control parameters. For the first circulating water control parameters determined at each monitoring time node within the current control period, the deviation value at each monitoring time node is determined based on the deviation between the first circulating water control parameters and the corresponding preset control parameters. Based on the deviation value, the second circulating water control parameters are analyzed in a second control dimension to obtain the optimized target circulating water control parameters. The parameters of the circulating water cooling equipment are adjusted according to the optimized target circulating water control parameters. The method provided in this application does not rely on easily failing water quality parameters. It can perform analysis in the first control dimension on the circulating water control parameters determined by preliminary process calculations, and can also adjust the second circulating water control parameters based on the deviation between the target circulating water control parameters determined in the previous control period and the first circulating water control parameters. This avoids the accumulation of deviations caused by fluctuations in the current control period, ultimately obtaining circulating water control parameters that match the actual situation, which helps improve the thermal energy utilization efficiency of the circulating water.

[0060] The waste-to-energy power plant circulating water system control method provided in this application embodiment can be applied to the waste-to-energy power plant circulating water system control device. In this case, the waste-to-energy power plant circulating water system control device is the executing entity of the waste-to-energy power plant circulating water system control method provided in this application embodiment. This application embodiment does not impose any restrictions on the specific type of terminal equipment.

[0061] For example, the control device for the circulating water system of a waste incineration power plant can be a microcontroller, mobile phone, tablet computer, laptop computer, ultra-mobile personal computer (UMPC), netbook, desktop computer, computing device, or computer, laptop computer, handheld communication device, handheld computing device, etc. connected to a wireless modem.

[0062] To better understand the waste-to-energy plant circulating water system control method provided in this application embodiment, the specific implementation process of the waste-to-energy plant circulating water system control method provided in this application embodiment will be described by way of example below.

[0063] Figure 1 This paper presents a schematic flowchart of a control method for a circulating water system in a waste-to-energy plant, according to an embodiment of this application. The control method includes:

[0064] S100, Obtain the first circulating water control parameters to be optimized for the circulating water system. These first circulating water control parameters are determined through preliminary process calculations based on the basic information obtained from the circulating water system. The first circulating water control parameters are the control parameters determined at each monitoring time node within the current control period.

[0065] It is understandable that the first circulating water control parameters are not directly collected, but rather generated through preliminary process calculations based on the basic information of the circulating water system. This basic information can include temperature data, pressure data, etc., which can be acquired in real time by sensors at key nodes, such as pressure sensors in the circulating water pipelines and temperature sensors at the inlet and outlet of the heat exchanger. The control period can be 10 minutes, 20 minutes, 30 minutes, etc., with sampling performed at fixed time intervals (e.g., 1 minute / sample) within each control period. After each sampling, a set of first circulating water control parameters is generated through preliminary process calculations, ultimately forming a correspondence table between control period number, monitoring time node, and parameter value.

[0066] For example, taking the calculation of circulating water flow rate as an example, the heat load-flow rate matching formula determined during the design phase of the waste incineration power plant (such as Q=K×ΔT×F, where Q is the circulating water flow rate, K is the heat flux per unit area of ​​the heat exchanger, ΔT is the temperature difference between the inlet and outlet of the heat exchanger, and F is the heat exchange area) in the basic information can be substituted into the formula to calculate the initial flow rate value that meets the theoretical heat exchange requirements. This value is the first circulating water control parameter.

[0067] S200, based on the auxiliary information obtained from the circulating water system, the first circulating water control parameters are analyzed in the first control dimension to obtain the corresponding second circulating water control parameters. The auxiliary information reflects the heat load of the waste incinerator. This auxiliary information is calculated based on the waste processing volume, the lower heating value of the waste, and the boiler thermal efficiency. The analysis in the first control dimension is used to analyze the matching dimension between the heat load of the waste incinerator and the first circulating water control parameters.

[0068] It is understandable that auxiliary information can be the heat load data of the waste incinerator. For example, weight information can be obtained through the weighing sensors on the fuel (waste) conveyor belt, and the weight information can be converted into a heat load value. For example, the daily waste processing volume (e.g., 2800 t / d), the lower heating value of the waste (e.g., 1500 kcal / kg), and the boiler thermal efficiency (e.g., 80%-85%, taking 82%) can be obtained. The total daily heat can then be calculated as follows: Total heat (kcal / d) = Daily waste processing volume (kg / d) × Lower heating value (kcal / kg) = 2800 × 10 3 kg × 1500 kcal / kg = 4.2 × 10 9kcal / d; then calculate the effective heat load (MW): First, convert the daily effective heat to hourly effective heat: Effective heat (kcal / h) = Total heat × Boiler thermal efficiency ÷ 24h = 4.2 × 10 9 ×82%÷24≈1.435×10 8 kcal / h; then convert to megawatts (1MW = 860,000 kcal / h, i.e., 1MW = 8.6 × 10⁻⁶ kcal / h). 5 kcal / h): Heat load (MW) = 1.435 × 10 8 ÷8.6×10 5 ≈167MW.

[0069] The first control dimension can be the matching dimension between heat load and circulating water parameters. That is, the theoretical deviation of the second circulating water control parameters is calibrated based on the actual heat load of the waste incinerator. For example, if the flow control parameter in the first circulating water control parameter is 500 m³ / h according to the preliminary process calculation, but the auxiliary information shows that the current furnace heat load is 12% higher than the design value, then the flow parameter can be adjusted to 500 × (1 + 12% × 1.2) = 572 m³ / h, which is the second circulating water control parameter, according to the adjustment rule that the circulating water flow rate increases by 1.2% for every 1% increase in heat load.

[0070] S300: For the first circulating water control parameters determined at each monitoring time node within the current control period, determine the deviation value at each monitoring time node based on the deviation between the first circulating water control parameters and the corresponding preset control parameters. The preset control parameters are the target circulating water control parameters determined in the previous control period.

[0071] It is understood that the preset control parameters are not the first circulating water control parameters of the previous control period, but rather the finalized target circulating water control parameters after complete adjustment from the previous control period. The preset control parameters are used to control the operation of the circulating water system in the previous control period. The deviation between the first circulating water control parameters and the corresponding preset control parameters reflects the fluctuation difference between the parameters that are not yet properly adjusted in the current control period and the parameters that have been adjusted in the previous control period. This fluctuation difference may stem from equipment aging (such as a decrease in pump efficiency leading to a lower initial flow rate calculation) or sensor drift (such as a higher temperature sensor reading), etc., and can provide data for subsequent adjustments, avoiding the accumulation of deviations between control periods.

[0072] For example, the first circulating water control parameters of each monitoring time node within the current control period are iterated through, and the values ​​are compared with the preset control parameters determined in the previous current control period. The difference (i.e., the deviation value) of each set of parameters is calculated to form the deviation data corresponding to each monitoring time node.

[0073] For example, deviation calculation can be performed according to the rule of corresponding parameters and monitoring time nodes. For instance, the first circulating water control parameters (such as flow rate 505 m³ / h and temperature 32.5℃) corresponding to the monitoring time node T1-a1 in the current control period T1 need to be compared with the preset control parameters (such as flow rate 560 m³ / h and temperature 31℃) of the corresponding monitoring time node (i.e., T0-a1) in the previous control period T0. The flow deviation value (505-560=-55 m³ / h) and the temperature deviation value (32.5-31=1.5℃) are calculated respectively. A set of such deviation values ​​is generated for each monitoring time node.

[0074] S400, based on the deviation value, performs analysis on the second control dimension of the second circulating water control parameters to obtain the optimized target circulating water control parameters.

[0075] It can be understood that the second control dimension is the deviation calibration dimension between the preset control parameters and the first circulating water control parameters. The analysis on the second control dimension is used to eliminate the accumulation of deviation between two consecutive control periods based on heat load matching.

[0076] For example, statistical analysis (such as averaging and removing outliers) is performed on the deviation values ​​of all monitoring time nodes within the current control period. The second circulating water control parameters are then adjusted a second time under the deviation calibration dimension (i.e., the second process dimension) to finally generate the optimized target circulating water control parameters.

[0077] Taking flow rate parameters as an example, firstly, for each monitoring time point within the current control period, the first circulating water control parameter is compared one by one with the preset control parameter determined in the previous control period, and the numerical difference between the two is calculated. This difference is defined as the first deviation. Then, the second circulating water control parameter is compared one by one with the preset control parameter in the previous control period, and the numerical difference between the two is calculated. This difference is defined as the second deviation. Next, the difference between the first and second deviations is calculated to reflect the effect of heat load adjustment on offsetting the original deviation. Finally, the optimized target circulating water control parameter is obtained according to the formula: Target Flow Rate = Second Circulating Water Control Parameter - Deviation Difference × Correction Ratio (e.g., a correction ratio of 30%). This approach avoids both over-offsetting the original deviation and preventing systemic problems such as insufficient offsetting of the initial low flow rate caused by decreased pump efficiency, which could lead to the accumulation of deviations between control periods.

[0078] In one possible implementation, the deviation between the first circulating water control parameter and the corresponding preset control parameter is the first deviation. S400, based on the deviation value, the second circulating water control parameter is analyzed in a second control dimension to obtain the optimized target circulating water control parameters, including:

[0079] S410, upon detecting fluctuations in the incinerator's heat load, a second deviation is obtained based on preset control parameters and the second circulating water control parameters. This second deviation reflects deviations caused by non-heat load factors.

[0080] For example, if the rate of change of instantaneous delivery volume exceeds ±5% within 1 minute, it is determined that the incinerator's heat load is fluctuating. Because heat load fluctuations in the incinerator can cause heat load adjustments to excessively offset the original deviation, i.e., over-offsetting the original deviation, the difference between the first deviation and the second deviation can be calculated for each monitoring time point within the current control period to determine the effect of heat load adjustments on offsetting the original deviation. This allows for targeted adjustment of the parameters at that monitoring time point, preventing excessive offsetting of the original deviation at that monitoring time point.

[0081] For example, for the first circulating water control parameter at each monitoring time node within the current control period, the parameters are compared one by one with the preset control parameters determined in the previous control period. The numerical difference between the two is calculated, and the difference is defined as the first deviation, so as to form a corresponding dataset of monitoring time node-parameter type-first deviation.

[0082] For example, the second circulating water control parameters optimized by the first control dimension (heat load matching) for each monitoring time node in the current control period are called, and compared with the preset control parameters of the previous control period in the same dimension. The numerical difference between the two is calculated, and the difference is defined as the second deviation. It is added to the above monitoring time node-parameter type dataset to form a pair of data of first deviation-second deviation.

[0083] It should be noted that the calculation end changes from the first circulating water control parameter (unoptimized heat load) to the second circulating water control parameter (optimized heat load). The difference between the two is essentially the impact of heat load optimization on the original deviation. If the first deviation is partially offset by the increase in heat load, the second deviation will be closer to 0 than the first deviation.

[0084] Taking flow rate as an example, if the heat load at the monitoring time point during the current control period is 12% higher than the design value, and according to the rule that for every 1% increase in heat load, the flow rate increases by 1.2%, the first circulating water control parameter of 500 m³ / h is adjusted to the second circulating water control parameter of 572 m³ / h (500 × (1 + 12% × 1.2)); the preset control parameter is 550 m³ / h, then the second deviation (flow rate) = 572 - 550 = +22 m³ / h;

[0085] S420, based on the first deviation and the second deviation, analyzes the second circulating water control parameters in the second control dimension to obtain the optimized target circulating water control parameters. The difference between the first deviation and the second deviation reflects the effect of heat load adjustment on offsetting the original deviation.

[0086] Understandably, the process begins by calculating the difference between the first and second deviations (i.e., the deviation difference) for each monitoring time point and each parameter type. Then, based on the sign and absolute value of this difference, the second circulating water control parameters are adjusted a second time under the second control dimension, ultimately generating optimized target circulating water control parameters that satisfy both heat load matching and deviation controllability.

[0087] For example, the difference between the first and second deviations is used to reflect the effect of heat load adjustment on offsetting the original deviation. Taking flow parameters as an example: the first deviation is -50 m³ / h, the second deviation is +29.2 m³ / h, and the deviation difference = 29.2 - (-50) = +79.2 m³ / h. This shows that the heat load adjustment not only offsets the original negative deviation of -50 m³ / h, but also generates a positive deviation of +29.2 m³ / h. To avoid excessive parameter fluctuations between two consecutive control periods (i.e., to satisfy the continuity between two consecutive control periods), the second circulating water control parameter can be adjusted a second time. For example, the target flow rate = second circulating water control parameter - deviation difference × correction ratio (e.g., correction ratio 30%), i.e., 559.2 - 79.2 × 30% = 535.44 m³ / h.

[0088] This setup avoids both overcompensating for the original deviation and failing to compensate for the low initial flow rate caused by the decrease in pump efficiency, which could lead to systemic problems such as the accumulation of deviations between control periods.

[0089] In one possible implementation, the second circulating water control parameters include a second flow control parameter and a second temperature control parameter. S420, based on the first deviation and the second deviation, an analysis is performed on the second circulating water control parameters in a second control dimension to obtain optimized target circulating water control parameters, including:

[0090] S421, based on the first deviation and the second deviation, adjust the temperature dimension of the second temperature control parameter to obtain the temperature adjustment control parameter in the optimized target circulating water control parameters.

[0091] As can be understood, the first step is to obtain the corresponding first deviation (temperature) and second deviation (temperature). Then, the difference between the two is calculated. Next, based on the process characteristics of the temperature parameter, a correction rule is set to adjust the second temperature control parameter a second time, generating the temperature adjustment control parameter.

[0092] For example, the first deviation (temperature): the current first temperature control parameter (34℃) minus the temperature in the preset control parameter (32℃) = 34 - 32 = +2℃; the second deviation (temperature): the current second temperature control parameter (30℃ after heat load adjustment) minus the temperature in the preset control parameter (32℃) = 30 - 32 = -2℃. Then, the temperature deviation difference is calculated as: second deviation (temperature) - first deviation (temperature) = -4℃, which reflects the over-adjustment of the heat load adjustment to the original temperature deviation. Next, the temperature adjustment amount is calculated (e.g., temperature adjustment amount = temperature deviation difference × correction range = -4 × 25% = -1℃, where the correction range can be set to 25%). Finally, the second temperature control parameter is adjusted according to the temperature adjustment amount to obtain the temperature adjustment control parameter, for example, the temperature correction control parameter = second temperature control parameter - temperature correction amount = 30 - (-1) = 31℃.

[0093] S422, based on the first deviation and the second deviation, the second flow control parameter is adjusted to obtain the flow adjustment control parameter in the optimized target circulating water control parameters.

[0094] It is understandable that the first deviation of the flow rate is -50 m³ / h, and the second deviation is +29.2 m³ / h. The difference in deviation is 29.2 - (-50) = +79.2 m³ / h. This indicates that the heat load adjustment not only offset the original negative deviation of -50 m³ / h, but also generated a positive deviation of +29.2 m³ / h. In order to avoid excessive parameter fluctuations between two consecutive control periods (i.e., to satisfy the continuity between two consecutive control periods), the second circulating water control parameter can be adjusted a second time. For example, the target flow rate is calculated as: second circulating water control parameter - deviation difference × correction ratio (e.g., correction ratio 30%), which is 559.2 - 79.2 × 30% = 535.44 m³ / h.

[0095] This setup, by comparing the first deviation with the second deviation and using the difference between them as the basis for secondary correction, can identify overshoot or undercompensation adjustment behaviors, thereby enabling targeted fine-tuning of the second circulating water control parameters, reducing residual deviations, and ultimately obtaining circulating water control parameters that match the actual situation, which helps to improve the thermal energy utilization efficiency of circulating water.

[0096] In one possible implementation, S400, based on the deviation value, performs an analysis of the second circulating water control parameters in the second control dimension to obtain optimized target circulating water control parameters, including:

[0097] S430, under the condition that the heat load of the incinerator is stable, for each monitoring time node within the current control period, determines the optimization information corresponding to the monitoring time node based on the deviation value corresponding to the monitoring time node.

[0098] It is understandable that if the rate of change of instantaneous delivery within 1 minute does not exceed ±5%, the incinerator's heat load is considered stable. Therefore, instead of focusing on the differences at individual time points, the deviation (target adjustment deviation) of the entire control period is smoothed to obtain a deviation value that represents the overall trend of the control period. This unified value is then used to adjust the key time points within the control period (such as the last stable time point) and then applied to the entire control period to ensure the parameters of the entire control period are stable.

[0099] For example, for each monitoring time point, the difference between the first circulating water parameter and the preset control parameter corresponding to that monitoring time point is extracted from the system database; then, an adjustment coefficient is set according to the circulating water parameter type (flow rate / temperature), and the optimization information for that monitoring time point is calculated by multiplying the difference by the adjustment coefficient.

[0100] S440 analyzes and processes the optimization information corresponding to each monitoring time node within the current control period to obtain the target adjustment deviation corresponding to the current control period.

[0101] It is understandable that the optimization information of all monitoring time nodes within the current control period (such as optimization information of 20 traffic flows) is retrieved from the database; a weighted moving average method is used for smoothing, assigning a weight of 0.8 to the optimization information of the first 15 monitoring time nodes within the control period (due to low data stability), and assigning a weight of 1.2 to the optimization information of the last 5 monitoring time nodes (which are closer to the current system state and have higher data reference value); the weighted average value is calculated, and this value is defined as the target adjustment deviation corresponding to the current control period.

[0102] For example, the optimization information for 20 traffic flows within the current control period is: [-20,-18,-22,-19,-21,-23,-20,-17,-19,-22,-24,-50,-21,-18,-19,-17,-16,-18,-15,-14]. The weighted sum of the first 15 data points = (-20-18-22-19-21-23-20-17-19-22-24-50-21-18-19) × 0.8 = (-333) × 0.8 = -266.4, and the weighted sum of the last 5 data points = (-17-16-18-15-14) × 1.2 = (-80) × 1.2 = -96. Total weighted sum = -266.4 + (-96) = -362.4. Total weighted sum = 15 × 0.8 + 5 × 1.2 = 12 + 6 = 18. Target adjustment deviation (flow rate) = -362.4 ÷ 18 ≈ -20.13 m³ / h

[0103] It should be noted that if a regular arithmetic mean is used, outliers will cause deviations in the results (e.g., the regular average of the above data is -21.65 m³ / h, which is more negative than the weighted average); while the weighted moving average, by giving more weight to recent data, not only filters outliers but also reflects the current state of the system, making it more suitable for the dynamic control needs of circulating water systems.

[0104] S450, based on the target adjustment deviation, analyze the second circulating water control parameters corresponding to the target monitoring time node in the second control dimension to obtain the optimized target circulating water control parameters for the current control period. Here, the target monitoring time node is a monitoring time node within the current control period.

[0105] Understandably, the first step is to select a target monitoring time node. The last monitoring time node in the current control period can be chosen, as its data integrates the fluctuations from the previous 19 monitoring time nodes within the control period, providing a more accurate reflection of the system's current state. The second circulating water control parameter (corrected for heat load) corresponding to this monitoring time node is extracted from the database. A second adjustment is then performed according to the rule of adding the target correction deviation to the second circulating water control parameter (subtracting if the deviation is negative and adding if it is positive). The final value obtained is the target circulating water control parameter used in the current control period.

[0106] For example, if the second circulating water control parameter at the target monitoring time point is a flow rate of 560 m³ / h, and the current target adjustment deviation is a flow rate of -20.13 m³ / h, then the optimized target circulating water control parameter is 560 + (-20.13) = 539.87 ≈ 540 m³ / h.

[0107] This configuration weakens single-point noise and transient fluctuations through smoothing methods such as weighted moving averages, avoids drastic adjustments based on isolated outliers, and reduces system oscillations.

[0108] S500 adjusts the parameters of the circulating water cooling equipment based on the optimized target circulating water control parameters.

[0109] It is understandable that the optimized target circulating water control parameters can be the final operating instructions of a certain monitoring time node of the circulating water system within the current control period. These parameters are directly transmitted to the system actuator. For example, if the target flow rate of 622 m³ / h corresponds to controlling the output frequency of the circulating water pump inverter to 50 Hz, then the output frequency of the circulating water pump inverter of the circulating water cooling equipment can be adjusted to 50 Hz.

[0110] This setup involves acquiring the first circulating water control parameters to be optimized for the circulating water system. Based on auxiliary information acquired from the circulating water system, the first circulating water control parameters are analyzed in a first control dimension to obtain the second circulating water control parameters. For the first circulating water control parameters determined at each monitoring time node within the current control period, the deviation value at each monitoring time node is determined based on the deviation between the first circulating water control parameters and the corresponding preset control parameters. Based on the deviation value, the second circulating water control parameters are analyzed in a second control dimension to obtain the optimized target circulating water control parameters. The parameters of the circulating water cooling equipment are adjusted according to the optimized target circulating water control parameters. The method provided in this application does not rely on easily failing water quality parameters. It can perform analysis in the first control dimension on the circulating water control parameters determined by preliminary process calculations, and can also adjust the second circulating water control parameters based on the deviation between the target circulating water control parameters determined in the previous control period and the first circulating water control parameters. This avoids the accumulation of deviations caused by fluctuations in the current control period, ultimately obtaining circulating water control parameters that match the actual situation, which helps improve the thermal energy utilization efficiency of the circulating water.

[0111] In one possible implementation, the control method for the circulating water system of a waste-to-energy plant also includes:

[0112] If the auxiliary information is valid, the steps are as follows: to analyze the first circulating water control parameters in the first control dimension based on the auxiliary information obtained from the circulating water system, and to obtain the second circulating water control parameters corresponding to the circulating water system.

[0113] It is understandable that judgment conditions can be set, and when the judgment conditions are met, the auxiliary information is determined to be valid. For example, the judgment conditions could be that the weighing sensor of the waste conveyor belt has no fault alarm and the daily waste processing volume is within ±15% of the design value. When the auxiliary information is valid, the steps of analyzing the first circulating water control parameters in the first control dimension based on the auxiliary information obtained from the circulating water system can be performed to obtain the second circulating water control parameters corresponding to the circulating water system.

[0114] In one possible implementation, S200, based on auxiliary information obtained from the circulating water system, the first circulating water control parameters are analyzed in a first control dimension to obtain the second circulating water control parameters corresponding to the circulating water system, including:

[0115] S510, based on the load deviation information of the waste incinerator in the auxiliary information, determines the corresponding adjustment data for the circulating water system.

[0116] It is understandable that load deviation information can be extracted from auxiliary information, namely the difference between the current actual load and the preset benchmark load and the ratio of the difference.

[0117] For example, if the current auxiliary information shows that the actual load is 184MW and the preset reference load is 160MW, then: Absolute load deviation = 184 - 160 = 24MW; Relative load deviation = (24 / 160) × 100% = +15%, and 15% is the adjustment data corresponding to the circulating water system.

[0118] S520 determines the adjustment amount based on the adjustment data.

[0119] It is understandable that, according to the adjustment rule of increasing the circulating water flow rate by 1.2% for every 1% increase in heat load, the adjustment amount should be calculated. Therefore, the circulating water flow rate should be increased by 1 + 15% × 1.2 = 1.18 times, which is the adjustment amount.

[0120] S530, based on the adjustment amount, the first circulating water control parameters are analyzed in the first control dimension to obtain the second circulating water control parameters corresponding to the circulating water system.

[0121] It is understandable that the flow control parameter in the first circulating water control parameter is 500 m³ / h according to the preliminary process calculation. However, the auxiliary information shows that the current furnace heat load is 15% higher than the design value. Therefore, the flow parameter can be adjusted to 500 × (1 + 15% × 1.2) = 590 m³ / h, which is the second circulating water control parameter, according to the adjustment rule that the circulating water flow rate increases by 1.2% for every 1% increase in heat load.

[0122] With this setup, when the furnace load deviates significantly from the baseline (such as changes in fuel calorific value or fluctuations in feed rate), failure to correct it in time will cause insufficient heat exchange or excessive cooling. Adjustments based on load deviation can reduce this mismatch and help improve the thermal energy utilization efficiency of circulating water.

[0123] In one possible implementation, the first circulating water control parameter is at least one of flow rate and temperature.

[0124] In one possible implementation, S530, the first circulating water control parameters are analyzed in a first control dimension based on the adjustment amount to obtain the second circulating water control parameters corresponding to the circulating water system, including:

[0125] S531, based on the adjustment amount, the flow rate in the first circulating water control parameter is analyzed in the first control dimension to obtain the second circulating water control parameter.

[0126] For example, if the flow control parameter in the first circulating water control parameter is 500 m³ / h according to the preliminary process calculation, but the auxiliary information shows that the current furnace heat load is 15% higher than the design value, then the adjustment rule is to increase the circulating water flow by 1.2% for every 1% increase in heat load. The adjustment amount is 1 + 15% × 1.2, and the flow parameter is adjusted to 500 × (1 + 15% × 1.2) 590 m³ / h, which is the second circulating water control parameter.

[0127] And / or,

[0128] S532, based on the adjustment amount, analyze the temperature in the first circulating water control parameter in the first control dimension to obtain the second circulating water control parameter.

[0129] It is understandable that if the outlet temperature in the first circulating water control parameter is 31℃, the preset rule is that for every 1% increase in load, the outlet temperature decreases by 0.8%, but the auxiliary information shows that the current furnace heat load is 15% higher than the design value, then the adjustment amount is 1-15%×0.8, and the temperature parameter is adjusted to 31×(1-15%×0.8)=31×0.88=27.28℃.

[0130] With this setup, when the furnace load deviates significantly from the baseline (such as changes in fuel calorific value or fluctuations in feed rate), failure to correct it in time will cause insufficient heat exchange or excessive cooling. Adjustments based on load deviation can reduce this mismatch and help improve the thermal energy utilization efficiency of circulating water.

[0131] In one possible implementation, S500 adjusts the parameters of the circulating water cooling equipment according to the optimized target circulating water control parameters, including:

[0132] S540 converts the optimized target circulating water control parameters into electrical signals and outputs them to the circulating water cooling equipment to adjust the parameters of the circulating water cooling equipment.

[0133] It is understandable that the target parameter value (physical quantity) is converted into a standard electrical signal that the cooling equipment can recognize through the system's signal conversion module (such as the analog output module of the PLC or the AO card of the DCS).

[0134] For example, the minimum range of the parameter corresponds to 4mA, and the maximum range corresponds to 20mA. The calculation formula is: Electrical signal value (mA) = 4 + (target parameter value - minimum parameter value) ÷ (maximum parameter value - minimum parameter value) × 16. If the optimized target circulating water control parameter is 540m³ / h, and the flow control range of the circulating water pump is 200-700m³ / h (minimum 200, maximum 700), then the electrical signal value = 4 + (540-200) ÷ (700-200) × 16 = 4 + (340 ÷ 500) × 16 = 4 + 10.88 = 14.88mA (that is, outputting a 14.88mA current signal to the water pump frequency converter).

[0135] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0136] Corresponding to the waste-to-energy plant circulating water system control method described in the above embodiments, this application also provides a waste-to-energy plant circulating water system control system, wherein each unit of the system can realize each step of the waste-to-energy plant circulating water system control method. Figure 3 This paper shows a structural block diagram of the control system of the circulating water system of a waste incineration power plant provided in an embodiment of this application. For ease of explanation, only the parts related to the embodiment of this application are shown.

[0137] Reference Figure 3 The control system for the circulating water system of a waste-to-energy incineration plant includes:

[0138] The acquisition unit is used to acquire the first circulating water control parameters to be optimized for the circulating water system. These first circulating water control parameters are determined through preliminary process calculations based on the acquired basic information about the circulating water system. The first circulating water control parameters are the control parameters determined at each monitoring time node within the current control period.

[0139] The analysis unit is used to analyze the first circulating water control parameters in a first control dimension based on auxiliary information obtained from the circulating water system, thereby obtaining the corresponding second circulating water control parameters. The auxiliary information reflects the heat load of the waste incinerator. This auxiliary information is calculated based on the waste processing volume, the lower heating value of the waste, and the boiler thermal efficiency. The analysis in the first control dimension is used to analyze the matching dimension between the heat load of the waste incinerator and the first circulating water control parameters.

[0140] The calculation unit is used to determine the deviation value at each monitoring time node based on the deviation between the first circulating water control parameter and the corresponding preset control parameter, given the first circulating water control parameter determined at each monitoring time node within the current control period. The preset control parameter is the target circulating water control parameter determined in the previous control period.

[0141] The optimization unit is used to analyze the second circulating water control parameters in the second control dimension based on the deviation value, and obtain the optimized target circulating water control parameters.

[0142] The adjustment unit is used to adjust the parameters of the circulating water cooling equipment according to the optimized target circulating water control parameters.

[0143] It should be noted that the information interaction and execution process between the above systems / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0144] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units is merely an example. In practical applications, the above functions can be assigned to different functional units as needed, that is, the internal structure of the system can be divided into different functional units to complete all or part of the functions described above. The functional units in the embodiments 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. Furthermore, the specific names of the functional units are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0145] This application also provides a control device for the circulating water system of a waste incineration power plant. Figure 4 This is a schematic diagram of the structure of a waste-to-energy plant circulating water system control device provided in one embodiment of this application. Figure 4 As shown, the waste-to-energy plant circulating water system control device 6 of this embodiment includes: at least one processor 60 ( Figure 4 Only one is shown in the image), at least one memory 61 ( Figure 4(Only one is shown in the image) and a computer program 62 stored in the at least one memory 61 and executable on the at least one processor 60. When the processor 60 executes the computer program 62, it causes the waste-to-energy plant circulating water system control device 6 to perform the steps in any of the above-described embodiments of the waste-to-energy plant circulating water system control method, or causes the waste-to-energy plant circulating water system control device 6 to perform the functions of each unit in the above-described embodiments of the device.

[0146] Exemplarily, the computer program 62 may be divided into one or more units, which are stored in the memory 61 and executed by the processor 60 to complete this application. The one or more units may be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program 62 in the waste-to-energy incineration circulating water system control device 6.

[0147] The waste-to-energy plant circulating water system control device 6 can be a microcontroller, mobile phone, tablet computer, laptop computer, ultra-mobile personal computer (UMPC), netbook, desktop computer, computing device, or a computer, laptop computer, handheld communication device, or handheld computing device connected to a wireless modem. The waste-to-energy plant circulating water system control device 6 may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will understand that... Figure 4 This is merely an example of the control device 6 for the circulating water system of a waste-to-energy plant and does not constitute a limitation on the control device 6 for the circulating water system of a waste-to-energy plant. It may include more or fewer components than shown in the figure, or combine certain components, or different components, such as input / output devices, network access devices, buses, etc.

[0148] The processor 60 can be a Central Processing Unit (CPU), or it can 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 can be a microprocessor or any conventional processor.

[0149] In some embodiments, the memory 61 may be an internal storage unit of the waste-to-energy power plant circulating water system control device 6, such as a hard disk or memory of the waste-to-energy power plant circulating water system control device 6. In other embodiments, the memory 61 may be an external storage device of the waste-to-energy power plant circulating water system control device 6, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the waste-to-energy power plant circulating water system control device 6. Furthermore, the memory 61 may include both internal storage units and external storage devices of the waste-to-energy power plant circulating water system control device 6. The memory 61 is used to store operating systems, applications, bootloaders, data, and other programs, such as the program code of computer programs. The memory 61 can also be used to temporarily store data that has been output or will be output.

[0150] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0151] This application provides a computer program product that, when run on a waste-to-energy plant circulating water system control device, enables the waste-to-energy plant circulating water system control device to perform the steps described in any of the above method embodiments.

[0152] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. 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 at least: any entity or device capable of carrying the computer program code to the control device of the circulating water system of a waste incineration power plant, a recording medium, 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, such as a USB flash drive, a portable hard drive, a magnetic disk, or an optical disk.

[0153] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0154] 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, or a combination of computer software and electronic hardware. 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 implementation should not be considered beyond the scope of this application.

[0155] In the embodiments provided in this application, it should be understood that the disclosed waste-to-energy incineration plant circulating water system control device, waste-to-energy incineration plant circulating water system control system, and waste-to-energy incineration plant circulating water system control method can be implemented in other ways. For example, the embodiments of the waste-to-energy incineration plant circulating water system control device and waste-to-energy incineration plant circulating water system control system described above are merely illustrative. For example, the division of units is merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components 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 between devices or units through some interfaces, and may be electrical, mechanical, or other forms.

[0156] 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 this embodiment according to actual needs.

[0157] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method of controlling a circulating water system of a waste incineration power plant, characterized by, The method comprises: obtaining a first circulating water control parameter corresponding to a circulating water system to be optimized; wherein the first circulating water control parameter is determined according to preliminary process calculation based on basic information obtained by the circulating water system; the first circulating water control parameter is a control parameter determined at each monitoring time node in a current control period; based on the auxiliary information obtained by the circulating water system, analyzing the first circulating water control parameter in the first control dimension to obtain a second circulating water control parameter corresponding to the circulating water system; wherein the auxiliary information is used to reflect the heat load of the waste incinerator; the auxiliary information is calculated based on the waste treatment capacity, the low calorific value of waste and the boiler thermal efficiency; the analysis in the first control dimension is used to analyze the matching dimension of the heat load of the waste incinerator and the first circulating water control parameter; for the first circulating water control parameter determined at each monitoring time node in the current control period, according to the deviation between the first circulating water control parameter and the corresponding preset control parameter, the deviation value at each monitoring time node is determined; wherein the preset control parameter is the target circulating water control parameter determined in the previous control period; based on the deviation value, analyzing the second circulating water control parameter in the second control dimension to obtain the optimized target circulating water control parameter; adjusting the parameters of the circulating water cooling equipment according to the optimized target circulating water control parameter; wherein the deviation between the first circulating water control parameter and the corresponding preset control parameter is a first deviation, and the analysis of the second circulating water control parameter in the second control dimension based on the deviation value to obtain the optimized target circulating water control parameter comprises: in the case of detecting the heat load fluctuation of the incinerator, a second deviation is obtained based on the preset control parameter and the second circulating water control parameter; wherein the second deviation is used to reflect the deviation caused by non-heat load factors; based on the first deviation and the second deviation, analyzing the second circulating water control parameter in the second control dimension to obtain the optimized target circulating water control parameter; wherein the difference between the first deviation and the second deviation is used to reflect the offset effect of heat load adjustment on the original deviation; in the case of detecting that the heat load of the incinerator is stable, for each monitoring time node in the current control period, the optimization information corresponding to the monitoring time node is determined according to the deviation value corresponding to the monitoring time node; analyzing and processing the optimization information corresponding to each monitoring time node in the current control period to obtain the target adjustment deviation corresponding to the current control period; based on the target adjustment deviation, analyzing the second circulating water control parameter corresponding to the target monitoring time node in the second control dimension to obtain the optimized target circulating water control parameter corresponding to the current control period; wherein the target monitoring time node is one monitoring time node in the current control period.

2. The control method of the circulating water system of a waste incineration power plant according to claim 1, characterized by, The second circulating water control parameter comprises a second flow control parameter and a second temperature control parameter, and the analysis of the second circulating water control parameter in a second control dimension based on the first deviation and the second deviation to obtain the optimized target circulating water control parameter comprises: adjusting the second temperature control parameter based on the first deviation and the second deviation to obtain a temperature adjustment control parameter in the optimized target circulating water control parameter; adjusting the second flow control parameter based on the first deviation and the second deviation to obtain a flow adjustment control parameter in the optimized target circulating water control parameter.

3. The control method of the circulating water system of a waste incineration power plant according to claim 1, characterized by, The method further comprises: in the case that the auxiliary information is valid information, running the analysis of the first circulating water control parameter in a first control dimension based on the auxiliary information obtained by the circulating water system to obtain the second circulating water control parameter corresponding to the circulating water system.

4. The control method of circulating water system of waste incineration power plant according to claim 1, characterized by, The analysis of the first circulating water control parameter in a first control dimension based on the auxiliary information obtained by the circulating water system to obtain the second circulating water control parameter corresponding to the circulating water system comprises: determining adjustment data corresponding to the circulating water system based on load deviation information of the waste incinerator in the auxiliary information; determining an adjustment amount based on the adjustment data; analyzing the first circulating water control parameter in a first control dimension based on the adjustment amount to obtain the second circulating water control parameter corresponding to the circulating water system.

5. The waste incineration power plant circulating water system control method according to claim 4, characterized by, The first circulating water control parameter is at least one of flow and temperature.

6. The waste incineration power plant circulating water system control method according to claim 5, characterized by, The analysis of the first circulating water control parameter in a first control dimension based on the adjustment amount to obtain the second circulating water control parameter corresponding to the circulating water system comprises: analyzing the flow in the first circulating water control parameter in a first control dimension based on the adjustment amount to obtain the second circulating water control parameter; and / or analyzing the temperature in the first circulating water control parameter in a first control dimension based on the adjustment amount to obtain the second circulating water control parameter.

7. The waste incineration power plant circulating water system control method according to claim 5, characterized by, The adjustment of the parameter of the circulating water cooling equipment according to the optimized target circulating water control parameter comprises: converting the optimized target circulating water control parameter into an electric signal and outputting the electric signal to the circulating water cooling equipment to adjust the parameter of the circulating water cooling equipment.

8. A control device for a circulating water system in a waste incineration power plant, characterized in that, The computer program stored in the memory and executable on the processor, when the processor executes the computer program, realizes the method according to any one of claims 1 to 7. The computer program stored in the memory and executable on the processor, when the processor executes the computer program, realizes the method according to any one of claims 1 to 7.

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