Steam heat pump system output load scheduling distribution method and system

Abstract

The present application belongs to the field of heat pump, and discloses a steam heat pump system output load scheduling distribution method and system, the method comprising: calculating the output opening degree control word target value of the steam heat pump system according to the set temperature of the used steam; performing PID calculation according to the set temperature of the used steam and the current temperature of the used steam; correcting the control word target value according to the PID calculation output value of the used steam, the current temperature differential value of the used steam, the current temperature differential value and current flow differential value of the pipe network steam, the current temperature differential value and current flow differential value of the steam generated by the steam heat pump system, to obtain the control word correction value; judging whether the control word correction value meets the preset condition, if yes, adjusting the output opening degree of the steam heat pump system according to the control word correction value, if not, adjusting the output opening degree of the steam heat pump system according to the control word target value. The present application controls the control word of the steam heat pump system, so that the output median used steam load is stable and meets the use demand.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, and more particularly to a method and system for scheduling and allocating the output load of a steam heat pump system. Background Technology

[0002] Steam heat pump systems recover a significant amount of waste heat by consuming electrical energy, enabling high-value steam heating with substantial efficiency gains and high investment returns. In practical applications, the low-grade steam generated by the steam heat pump system mixes with the high-grade steam (generated by the boiler) supplied from the pipeline network after injection and mixing to form usable intermediate-grade steam. The output steam load of the steam heat pump system and the rate of change of the pipeline network steam both affect the stability of the intermediate-grade steam. In practical applications, a continuous and stable intermediate-grade steam is required. Although the pipeline network steam variation is relatively small, it still affects the stability of the usable steam. Therefore, the output steam load of the heat pump system needs to be scheduled and managed to ensure the continuous stability of the intermediate-grade steam. Thus, regulating the steam heat pump system's control word to ensure that its output load meets the requirements for stable operation of the intermediate-grade steam is a pressing technical problem that needs to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a method and system for scheduling and allocating the output load of a steam heat pump system, thereby regulating the control word of the steam heat pump system to stabilize the mid-level steam load and meet usage requirements.

[0004] The technical solution provided by this invention is as follows: On the one hand, a method for scheduling and allocating the output load of a steam heat pump system is provided, including: Get the set temperature of the steam to be used, the current temperature of the steam to be used, the current temperature and current flow rate of the steam in the pipeline network, and the current temperature and current flow rate of the steam generated by the steam heat pump system; The target value of the output opening control word of the steam heat pump system is calculated based on the set temperature of the steam used; PID calculations are performed based on the set temperature of the steam to be used and the current temperature of the steam to be used. The control word target value is corrected based on the PID calculation output value of the steam used, the differential value of the current temperature of the steam used, the differential value of the current temperature and the differential value of the current flow rate of the steam in the pipeline, and the differential value of the current temperature and the differential value of the current flow rate of the steam generated by the steam heat pump system, to obtain the control word correction value. Determine whether the control word correction value meets the preset conditions. If yes, adjust the output opening of the steam heat pump system according to the control word correction value; otherwise, adjust the output opening of the steam heat pump system according to the control word target value.

[0005] In some embodiments, the PID calculation based on the set temperature of the steam used and the current temperature of the steam used specifically includes: Calculate the deviation between the current temperature of the steam being used and the set temperature of the steam being used; When the deviation value is greater than the preset value and the duration is greater than the preset time, PID calculation is performed based on the set temperature of the steam and the current temperature of the steam to obtain the PID calculation output value of the steam.

[0006] In some embodiments, the calculation formula for the target value of the output opening control word of the steam heat pump system based on the set temperature of the steam used is as follows:

[0007] in, To control the target value of the word, To set the temperature for using steam, , and They are constants.

[0008] In some implementations, the correction formula for the control word correction value is:

[0009] in, It is the control word correction value; The target value for the control word; It is the PID calculation output value of the current temperature of the steam and the set temperature of the steam. This is the current temperature of the steam in the pipeline network; This is the current flow rate of steam in the pipeline network; This is the current temperature at which steam is being used; It is the current temperature of the steam generated by the steam heat pump system; This is the current flow rate of steam generated by the steam heat pump system. , , , , , They are constants.

[0010] In some implementations, determining whether the control word correction value meets a preset condition, and if so, adjusting the output opening of the steam heat pump system according to the control word correction value; if not, adjusting the output opening of the steam heat pump system according to the target value of the control word specifically includes: Determine the control word correction value Is it in Within the specified range, if yes, the output opening of the steam heat pump system is adjusted according to the control word correction value; if no, the output opening of the steam heat pump system is adjusted according to the control word target value, wherein... The target value for the control word is 1 ≤ a ≤ 3.

[0011] On the other hand, a steam heat pump system output load scheduling and distribution system is also provided, including a controller, multiple temperature sensors and multiple flow sensors, wherein the multiple temperature sensors and multiple flow sensors are electrically connected to the controller respectively. The multiple temperature sensors are used to collect the current temperature of the steam being used, the current temperature of the steam in the pipeline network, and the current temperature of the steam generated by the steam heat pump system, respectively. The multiple flow sensors are used to collect the current flow rate of steam in the pipeline network and the current flow rate of steam generated by the steam heat pump system, respectively. The controller is configured to acquire the set temperature of the steam to be used, and perform PID calculations based on the set temperature and the current temperature of the steam; it is also configured to calculate the target value of the output opening control word of the steam heat pump system based on the set temperature of the steam; correct the target value of the control word based on the PID calculation output value of the steam, the differential value of the current temperature of the steam, the differential value of the current temperature and the differential value of the current flow rate of the steam in the pipeline, and the differential value of the current temperature and the differential value of the current flow rate of the steam generated by the steam heat pump system, to obtain a corrected control word value; and determine whether the corrected control word value meets a preset condition. If yes, the output opening of the steam heat pump system is adjusted according to the corrected control word value; otherwise, the output opening of the steam heat pump system is adjusted according to the target value of the control word.

[0012] In some implementations, the controller includes: The calculation module is used to calculate the deviation between the current temperature of the steam being used and the set temperature of the steam being used. The judgment module is used to determine whether the deviation value is greater than a preset value and whether the duration is greater than a preset time; The calculation module is also used to perform PID calculation based on the set temperature of the steam and the current temperature of the steam when the deviation value is greater than the preset value and the duration is greater than the preset time, so as to obtain the PID calculation output value of the steam.

[0013] In some embodiments, the calculation formula for the target value of the output opening control word of the steam heat pump system based on the set temperature of the steam used is as follows:

[0014] in, To control the target value of the word, To set the temperature for using steam, , and They are constants.

[0015] In some implementations, the correction formula for the control word correction value is:

[0016] in, It is the control word correction value; The target value for the control word; It is the PID calculation output value of the current temperature of the steam and the set temperature of the steam. This is the current temperature of the steam in the pipeline network; This is the current flow rate of steam in the pipeline network; This is the current temperature at which steam is being used; It is the current temperature of the steam generated by the steam heat pump system; This is the current flow rate of steam generated by the steam heat pump system. , , , , , They are constants.

[0017] In some implementations, the controller includes: The judgment module is used to determine the control word correction value. Is it in Within the range; The control module is used when the control word correction value exist When the control word correction value is within the specified range, the output opening of the steam heat pump system is adjusted according to the control word correction value; when the control word correction value is within the specified range, the output opening of the steam heat pump system is adjusted according to the control word correction value. Not here When the value is within the specified range, the output opening of the steam heat pump system is adjusted according to the target value of the control word, wherein... The target value for the control word is 1 ≤ a ≤ 3.

[0018] The technical advantages of this invention are as follows: This invention establishes a mathematical relationship between the setpoint for steam temperature and the target value of the control word for the output load of the steam heat pump system. Then, the output value of the PID controller for the steam temperature, the derivative values ​​of the network steam temperature and flow rate, and the derivative values ​​of the temperature and flow rate of the steam generated by the steam heat pump system are all combined and applied to the target value of the steam heat pump output load control word. This method utilizes the feedback effect of PID calculation and the predictive effect of the derivative, which can significantly reflect the changing trends of the network steam and the steam load generated by the steam heat pump system, forming a control word correction value to adjust the output load of the steam heat pump system and stabilize the steam usage. Furthermore, limiting the control word correction value within a preset range minimizes the variation in the control word value of the steam heat pump system, which is beneficial for stabilizing the output steam load and thus ensuring more stable steam usage. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a flowchart of an embodiment of a steam heat pump system output load scheduling and allocation method according to the present invention; Figure 2 This is a flowchart of another embodiment of the steam heat pump system output load scheduling and allocation method of the present invention; Figure 3 This is a schematic diagram of the output load scheduling and distribution system of a steam heat pump system according to the present invention. Detailed Implementation

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0022] It should also be further 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.

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In one embodiment of this application, such as Figure 1 and Figure 2 As shown, a method for scheduling and allocating the output load of a steam heat pump system includes: S100 acquires the set temperature of the steam to be used, the current temperature of the steam to be used, the current temperature and current flow rate of the steam in the pipeline network, and the current temperature and current flow rate of the steam generated by the steam heat pump system. S200 calculates the target value of the output opening control word of the steam heat pump system based on the set temperature of the steam used; S300 performs PID calculations based on the set temperature of the steam to be used and the current temperature of the steam to be used; S400 corrects the target value of the control word based on the PID calculation output value of the steam used, the differential value of the current temperature of the steam used, the differential value of the current temperature and the differential value of the current flow rate of the steam in the pipeline, and the differential value of the current temperature and the differential value of the current flow rate of the steam generated by the steam heat pump system, to obtain the control word correction value. S500 determines whether the control word correction value meets the preset conditions. If yes, the output opening of the steam heat pump system is adjusted according to the control word correction value; otherwise, the output opening of the steam heat pump system is adjusted according to the control word target value.

[0026] Specifically, the high-grade steam generated by the boiler is transported through pipelines. In this invention, the high-grade steam generated by the boiler is referred to as pipeline steam. The steam heat pump system recovers a large amount of waste heat to generate low-grade steam. The pipeline steam and the low-grade steam generated by the steam heat pump system are injected and mixed to form usable intermediate-grade steam. For example, the temperature of the pipeline steam is 168°C, and the temperature of the steam generated by the steam heat pump system is 100°C. After mixing, the pipeline steam and the steam generated by the steam heat pump system yield intermediate-grade steam at 125°C for use. The pipeline steam temperature and the steam temperature generated by the steam heat pump system in the above examples are merely exemplary values ​​to illustrate this solution. In practical applications, these temperature values ​​can be specifically set as needed, and this application does not limit them.

[0027] The set temperature for steam usage is the target temperature preset by the user. The current temperature of the steam used refers to the actual temperature of the steam at the time of data acquisition. When the actual temperature of the steam used deviates from the set temperature, the output opening of the steam heat pump system needs to be adjusted to stabilize the steam temperature at the set temperature. The target value of the output opening control word of the steam heat pump system is related to the set temperature of the steam used. Based on the set temperature, the target value of the output opening control word of the steam heat pump system can be calculated. Since the set temperature of the steam used is stable, the target value of the output load opening control word of the steam heat pump system is also stable, and therefore the real-time temperature of the steam used is also stable.

[0028] To adjust the output load of a steam heat pump system, a PID (Proportion Integral Derivative) algorithm is first used to calculate the current steam temperature based on the set temperature and the current steam temperature. This ensures that the current steam temperature matches the user-set temperature as closely as possible. In the PID algorithm, P stands for proportional control (input deviation multiplied by a proportional constant), I stands for integral control (integral operation on the input deviation), and D stands for derivative control (derivative operation on the input deviation).

[0029] After obtaining the PID calculation output value for steam usage, the target value of the control word needs to be corrected based on the PID calculation output value for steam usage, the derivative value of the current temperature of the steam used, the derivative values ​​of the current temperature and current flow rate of the steam in the pipeline network, and the derivative values ​​of the current temperature and current flow rate of the steam generated by the steam heat pump system. This results in a more accurate control word correction value. When the calculated control word correction value is within the preset range, it indicates that the control word correction value is accurate, and the output opening of the steam heat pump system can be adjusted according to the control word correction value. When the control word correction value is not within the preset range, it indicates that the control word correction value is inaccurate. In this case, the output opening of the steam heat pump system can be adjusted according to the target value of the control word.

[0030] This invention establishes a mathematical relationship between the setpoint for steam temperature and the target value of the control word for the output load of the steam heat pump system. Then, the output value of the PID controller for the steam temperature, the derivative values ​​of the network steam temperature and flow rate, and the derivative values ​​of the temperature and flow rate of the steam generated by the steam heat pump system are all combined and applied to the target value of the steam heat pump output load control word. This method utilizes the feedback effect of PID calculation and the predictive effect of the derivative, which can significantly reflect the changing trends of the network steam and the steam load generated by the steam heat pump system, forming a control word correction value to adjust the output load of the steam heat pump system and stabilize the steam usage. Furthermore, limiting the control word correction value within a preset range minimizes the variation in the control word value of the steam heat pump system, which is beneficial for stabilizing the output steam load and thus ensuring more stable steam usage.

[0031] In some embodiments, S300 specifically includes performing PID calculation based on the set temperature of the steam used and the current temperature of the steam used: S310 calculates the deviation between the current temperature of the steam being used and the set temperature of the steam being used; When the deviation value is greater than the preset value and the duration is greater than the preset time, S320 performs PID calculation based on the set temperature of the steam and the current temperature of the steam to obtain the PID calculation output value of the steam.

[0032] Specifically, when the deviation value is greater than the preset value and the duration is greater than the preset time, it indicates that the steam is unstable and the output load of the steam heat pump system needs to be adjusted. At this time, PID calculation is performed based on the set temperature of the steam and the current actual temperature of the steam. The PID calculation feedback is used to correct the control word correction value, and the output load of the steam heat pump system is adjusted according to the control word correction value to control the output load of the steam heat pump system and stabilize the steam usage.

[0033] In some embodiments, the calculation formula for the target value of the output opening control word of the steam heat pump system based on the set temperature of the steam used in S200 is as follows:

[0034] in, To control the target value of the word, To set the temperature for using steam, , and They are constants.

[0035] Specifically, since the output load opening degree of the steam heat pump system is related to the set temperature of the steam used, the target value of the output load opening degree control word of the steam heat pump system can be calculated based on the set temperature of the steam used.

[0036] In this embodiment, the relationship between the set temperature of the steam used and the target value of the output load opening control word of the steam heat pump system is obtained by fitting actual experimental data, so that the relationship between the target value of the output load opening control word of the steam heat pump system and the set temperature of the steam used is more in line with the actual use conditions.

[0037] This embodiment establishes a mathematical model between the set temperature of the steam used and the target value of the output load opening control word of the steam heat pump system. Since the set temperature of the steam used is stable, the target value of the output load opening control word of the steam heat pump system is also stable, and therefore the actual temperature of the steam used is also stable.

[0038] In some embodiments, the correction formula for the control word correction value is:

[0039] in, It is the control word correction value; The target value for the control word; It is the PID calculation output value of the current temperature of the steam and the set temperature of the steam. This is the current temperature of the steam in the pipeline network; This is the current flow rate of steam in the pipeline network; This is the current temperature at which steam is being used; It is the current temperature of the steam generated by the steam heat pump system; This is the current flow rate of steam generated by the steam heat pump system. , , , , , They are constants.

[0040] In this embodiment, on the one hand, the feedback effect of PID calculation is used to apply the changes in steam usage to the target value of the control word to form a control word correction value; on the other hand, the prediction effect of the derivative can significantly reflect the changing trends of pipeline steam and steam generated by the steam heat pump system. The derivative values ​​of the current temperature and current flow rate of pipeline steam, and the derivative values ​​of the current temperature and current flow rate of steam generated by the steam heat pump system are combined and applied to the target value of the output opening control word of the steam heat pump system to form a control word correction value. This controls the output opening of the steam heat pump system, adjusts the output load of the steam heat pump system, and stabilizes the temperature of the steam used.

[0041] In some embodiments, the step of S500, determining whether the control word correction value meets a preset condition, and if so, adjusting the output opening of the steam heat pump system according to the control word correction value; and if not, adjusting the output opening of the steam heat pump system according to the target value of the control word, specifically includes: S510 Determines the control word correction value Is it in Within the specified range, if yes, the output opening of the steam heat pump system is adjusted according to the control word correction value; if no, the output opening of the steam heat pump system is adjusted according to the control word target value, wherein... The target value for the control word is 1 ≤ a ≤ 3.

[0042] In this embodiment, the control word correction value Limited to Within the specified range, 'a' is selected with different values ​​depending on the type of steam heat pump system and its usage, and 1 ≤ a ≤ 3. Limiting the control word correction value to within ±a of the control word target value minimizes changes in the control word value of the steam heat pump system, which is beneficial for stable output steam load and therefore more stable steam usage. When the control word correction value is outside the ±a range of the control word target value, it indicates an error in the control word correction value. In this case, the output opening of the steam heat pump system should still be adjusted according to the control word target value.

[0043] Preferably, the pressure of the steam used and / or the steam in the pipeline can also be obtained, and an alarm can be issued when the pressure of the steam used and / or the steam in the pipeline exceeds a preset value to avoid safety accidents.

[0044] The present invention also provides an embodiment of a steam heat pump system output load scheduling and distribution system, such as... Figure 3 As shown, it includes a controller and a first temperature sensor. Second temperature sensor Third temperature sensor First flow sensor Second flow sensor First temperature sensor Second temperature sensor Third temperature sensor First flow sensor Second flow sensor Each is electrically connected to the controller; First temperature sensor It is used to collect the current temperature of the steam in the pipeline network; Second temperature sensor Used to collect the current temperature of the steam generated by the steam heat pump system. Third temperature sensor This is used to collect the current temperature of the steam being used; First flow sensor It is used to collect the current flow rate of steam in the pipeline network; Second flow sensor It is used to collect the current flow rate of steam generated by the steam heat pump system; The controller is used to acquire the set temperature of the steam to be used, and to perform PID calculations based on the set temperature and the current temperature of the steam. It is also used to calculate the target value of the output opening control word of the steam heat pump system based on the set temperature of the steam. The controller corrects the target value of the control word based on the PID calculation output value of the steam, the derivative value of the current temperature of the steam, the derivative value of the current temperature and flow rate of the steam in the pipeline network, and the derivative value of the current temperature and flow rate of the steam generated by the steam heat pump system, to obtain a corrected control word value. It then determines whether the corrected control word value meets a preset condition. If yes, the controller adjusts the output opening of the steam heat pump system according to the corrected control word value; otherwise, the controller adjusts the output opening of the steam heat pump system according to the target control word value.

[0045] Furthermore, the steam heat pump system output load dispatching and distribution system also includes a third flow sensor. First pressure sensor Second pressure sensor and the third pressure sensor Third flow sensor First pressure sensor used to measure the flow rate of steam. Second pressure sensor used to measure the pressure of steam in the pipeline network. Third pressure sensor used to measure the pressure of steam generated by a steam heat pump system. Used to measure the pressure of steam. When the first pressure sensor... Second pressure sensor and the third pressure sensor An alarm can be triggered when the detected pressure exceeds a preset value to prevent safety accidents.

[0046] Furthermore, the controller includes: The calculation module is used to calculate the deviation between the current temperature of the steam being used and the set temperature of the steam being used. The judgment module is used to determine whether the deviation value is greater than a preset value and whether the duration is greater than a preset time; The calculation module is also used to perform PID calculation based on the set temperature of the steam and the current temperature of the steam when the deviation value is greater than the preset value and the duration is greater than the preset time, so as to obtain the PID calculation output value of the steam.

[0047] The formula for calculating the target value of the output opening control word of the steam heat pump system based on the set temperature of the steam used is as follows:

[0048] in, To control the target value of the word, To set the temperature for using steam, , and They are constants.

[0049] The correction formula for the control word correction value is:

[0050] in, It is the control word correction value; The target value for the control word; It is the PID calculation output value of the current temperature of the steam and the set temperature of the steam. This is the current temperature of the steam in the pipeline network; This is the current flow rate of steam in the pipeline network; This is the current temperature at which steam is being used; It is the current temperature of the steam generated by the steam heat pump system; This is the current flow rate of steam generated by the steam heat pump system. , , , , , They are constants.

[0051] The controller includes: The judgment module is used to determine the control word correction value. Is it in Within the range; The control module is used when the control word correction value exist When the control word correction value is within the specified range, the output opening of the steam heat pump system is adjusted according to the control word correction value; when the control word correction value is within the specified range, the output opening of the steam heat pump system is adjusted according to the control word correction value. Not here When the value is within the specified range, the output opening of the steam heat pump system is adjusted according to the target value of the control word, wherein... The target value for the control word is 1 ≤ a ≤ 3.

[0052] Specifically, this embodiment is a system embodiment corresponding to the above method embodiment. For specific effects, please refer to the above method embodiment, which will not be repeated here.

[0053] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for scheduling and allocating the output load of a steam heat pump system, characterized in that, include: Get the set temperature of the steam to be used, the current temperature of the steam to be used, the current temperature and current flow rate of the steam in the pipeline network, and the current temperature and current flow rate of the steam generated by the steam heat pump system; The target value of the output opening control word of the steam heat pump system is calculated based on the set temperature of the steam used; PID calculations are performed based on the set temperature of the steam to be used and the current temperature of the steam to be used. The control word target value is corrected based on the PID calculation output value of the steam used, the differential value of the current temperature of the steam used, the differential value of the current temperature and the differential value of the current flow rate of the steam in the pipeline, and the differential value of the current temperature and the differential value of the current flow rate of the steam generated by the steam heat pump system, to obtain the control word correction value. Determine whether the control word correction value meets the preset conditions. If so, adjust the output opening of the steam heat pump system according to the control word correction value. If not, adjust the output opening of the steam heat pump system according to the target value of the control word.

2. The method for scheduling and allocating the output load of a steam heat pump system according to claim 1, characterized in that, The PID calculation based on the set temperature of the steam and the current temperature of the steam specifically includes: Calculate the deviation between the current temperature of the steam being used and the set temperature of the steam being used; When the deviation value is greater than the preset value and the duration is greater than the preset time, PID calculation is performed based on the set temperature of the steam and the current temperature of the steam to obtain the PID calculation output value of the steam.

3. The method for scheduling and allocating the output load of a steam heat pump system according to claim 1, characterized in that, The formula for calculating the target value of the output opening control word of the steam heat pump system based on the set temperature of the steam used is as follows: ； in, To control the target value of the word, To set the temperature for using steam, , and They are constants.

4. The method for scheduling and allocating the output load of a steam heat pump system according to claim 1, characterized in that, The correction formula for the control word correction value is: ； in, It is the control word correction value; The target value for the control word; It is the PID calculation output value of the current temperature of the steam and the set temperature of the steam. This is the current temperature of the steam in the pipeline network; This is the current flow rate of steam in the pipeline network; This is the current temperature at which steam is being used; It is the current temperature of the steam generated by the steam heat pump system; This is the current flow rate of steam generated by the steam heat pump system. , , , , , They are constants.

5. The method for scheduling and allocating the output load of a steam heat pump system according to claim 1, characterized in that, If the control word correction value meets the preset conditions, then the output opening of the steam heat pump system is adjusted according to the control word correction value. If not, then adjusting the output opening of the steam heat pump system according to the target value of the control word specifically includes: Determine the control word correction value Is it in Within the specified range, if yes, the output opening of the steam heat pump system is adjusted according to the control word correction value; if no, the output opening of the steam heat pump system is adjusted according to the control word target value, wherein... The target value for the control word is 1 ≤ a ≤ 3.

6. A steam heat pump system output load dispatching and distribution system, characterized in that, It includes a controller, multiple temperature sensors, and multiple flow sensors, with the multiple temperature sensors and multiple flow sensors electrically connected to the controller respectively; The multiple temperature sensors are used to collect the current temperature of the steam being used, the current temperature of the steam in the pipeline network, and the current temperature of the steam generated by the steam heat pump system, respectively. The multiple flow sensors are used to collect the current flow rate of steam in the pipeline network and the current flow rate of steam generated by the steam heat pump system, respectively. The controller is configured to acquire the set temperature of the steam to be used, and perform PID calculation based on the set temperature of the steam to be used and the current temperature of the steam to be used; it is also configured to calculate the target value of the output opening control word of the steam heat pump system based on the set temperature of the steam to be used; and correct the target value of the control word based on the PID calculation output value of the steam to be used, the differential value of the current temperature of the steam to be used, the differential value of the current temperature and the differential value of the current flow rate of the steam in the pipeline network, and the differential value of the current temperature and the differential value of the current flow rate of the steam generated by the steam heat pump system, to obtain a corrected value of the control word. And determine whether the control word correction value meets the preset conditions. If so, adjust the output opening of the steam heat pump system according to the control word correction value. If not, adjust the output opening of the steam heat pump system according to the target value of the control word.

7. The steam heat pump system output load dispatching and distribution system according to claim 6, characterized in that, The controller includes: The calculation module is used to calculate the deviation between the current temperature of the steam being used and the set temperature of the steam being used. The judgment module is used to determine whether the deviation value is greater than a preset value and whether the duration is greater than a preset time; The calculation module is also used to perform PID calculation based on the set temperature of the steam and the current temperature of the steam when the deviation value is greater than the preset value and the duration is greater than the preset time, so as to obtain the PID calculation output value of the steam.

8. The steam heat pump system output load dispatching and distribution system according to claim 6, characterized in that, The formula for calculating the target value of the output opening control word of the steam heat pump system based on the set temperature of the steam used is as follows: ； in, To control the target value of the word, To set the temperature for using steam, , and They are constants.

9. A steam heat pump system output load dispatching and distribution system according to claim 6, characterized in that, The correction formula for the control word correction value is: ； in, It is the control word correction value; The target value for the control word; It is the PID calculation output value of the current temperature of the steam and the set temperature of the steam. This is the current temperature of the steam in the pipeline network; This is the current flow rate of steam in the pipeline network; This is the current temperature at which steam is being used; It is the current temperature of the steam generated by the steam heat pump system; This is the current flow rate of steam generated by the steam heat pump system. , , , , , They are constants.

10. A steam heat pump system output load scheduling and distribution system according to claim 6, characterized in that, The controller includes: The judgment module is used to determine the control word correction value. Is it in Within the range; Control module, used when the control word correction value exist When the control word correction value is within the specified range, the output opening of the steam heat pump system is adjusted according to the control word correction value; when the control word correction value is within the specified range, the output opening of the steam heat pump system is adjusted according to the control word correction value. Not here When the value is within the specified range, the output opening of the steam heat pump system is adjusted according to the target value of the control word, wherein... The target value for the control word is 1 ≤ a ≤ 3.

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