Steam source control method and corresponding device for auxiliary steam system

Abstract

The present disclosure relates to a steam source control method and corresponding device for an auxiliary steam system, which is applied to a thermal power generating set, and an electric pressure reducing valve is arranged on the connecting pipe between the main steam system and the auxiliary steam system of the thermal power generating set, and the method comprises: determining the thermal parameters of the auxiliary steam system; according to the thermal parameters and the target thermal parameters, controlling the valve opening of the electric pressure reducing valve so that the thermal parameters of the auxiliary steam system reach the target thermal parameters, wherein the target thermal parameters are the thermal parameters that the user expects the auxiliary steam system to reach. By controlling the valve opening of the electric pressure boosting valve by the thermal parameters and the target thermal parameters, the intelligent adjustment of the valve opening can be realized, thereby ensuring the stability of the steam source in the steam pump in the auxiliary steam system, and avoiding the tripping of the thermal power generating set.

Description

Technical Field

[0001] The present disclosure relates to the field of control technology, and in particular to a steam source control method and a corresponding device for an auxiliary steam system. Background Art

[0002] The auxiliary steam system mainly refers to the steam supply system for heating and standby steam related to the start-up, shutdown and normal operation of boilers, steam turbines and their auxiliary equipment in thermal power generating units. In the relevant technology, a quick exhaust valve is usually set on the output pipeline of the main steam system to transport steam to the auxiliary steam system. Summary of the invention

[0003] The purpose of the present disclosure is to provide a steam source control method and a corresponding device for an auxiliary steam system to solve the technical problems existing in the related art.

[0004] In order to achieve the above-mentioned object, in a first aspect, the present disclosure provides a steam source control method for an auxiliary steam system, which is applied to a thermal power generating set, and an electric pressure reducing valve is arranged on a connecting pipe between a main steam system and an auxiliary steam system of the thermal power generating set, and the method comprises: Determining thermal parameters of the auxiliary steam system; According to the thermal parameters and the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled so that the thermal parameters of the auxiliary steam system reach the target thermal parameters, wherein the target thermal parameters are the thermal parameters that the user expects the auxiliary steam system to achieve.

[0005] Optionally, controlling the valve opening of the electric pressure reducing valve according to the thermal parameter and the target thermal parameter includes: When the thermal parameters do not reach the target thermal parameters, the target valve opening is determined according to a preset curve relationship and the target thermal parameters, wherein the preset curve relationship is used to characterize the curve relationship between the valve opening of the electric pressure reducing valve and the thermal parameters of the auxiliary steam system; When the valve opening of the electric pressure reducing valve is controlled to reach the target valve opening and the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero.

[0006] Optionally, when the valve opening of the electric pressure reducing valve is controlled to reach the target valve opening and the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero, including: In the process of controlling the valve opening of the electric pressure reducing valve to reach the target valve opening, collecting the new thermal parameters of the auxiliary steam system, and when the new thermal parameters reach the target thermal parameters, controlling the valve opening of the electric pressure reducing valve to zero, or, The valve opening of the electric pressure reducing valve is controlled to be the target valve opening, and after a preset control time, when the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero.

[0007] Optionally, determining the target valve opening according to the preset curve relationship and the target thermal parameters includes: The target valve opening is determined based on the preset curve relationship and the flow parameter and / or pressure parameter in the target thermal parameters, wherein the preset curve relationship is used to characterize the curve relationship between the valve opening of the electric pressure reducing valve and the flow parameter and pressure parameter of the auxiliary steam system.

[0008] Optionally, the electric pressure reducing valve is arranged on a connecting pipe parallel to the ground in the connecting pipe between the main steam system and the auxiliary steam system.

[0009] Optionally, a first switch is further provided between the main steam system and the electric pressure reducing valve, and the method further comprises: When the auxiliary steam system fails in operation, the first switch is controlled to be in an off state so that a relevant user can repair the auxiliary steam system; When the auxiliary steam system is running stably, the first switch is controlled to be in a closed state, so as to control the thermal parameters in the auxiliary steam system through the electric pressure reducing valve.

[0010] In a second aspect, the present disclosure provides a steam source control device for an auxiliary steam system, which is applied to a thermal power generating set, and an electric pressure reducing valve is arranged on a connecting pipe between a main steam system and an auxiliary steam system of the thermal power generating set, and comprises a first determining module and a first control module; The first determination module is used to determine the thermal parameters of the auxiliary steam system; The first control module is used to control the valve opening of the electric pressure reducing valve according to the thermal parameters and the target thermal parameters so that the thermal parameters of the auxiliary steam system reach the target thermal parameters, wherein the target thermal parameters are the thermal parameters that the user expects the auxiliary steam system to achieve.

[0011] Optionally, the first control module includes: a second determination module, configured to determine a target valve opening according to a preset curve relationship and the target thermal parameter when the thermal parameter does not reach a target thermal parameter, wherein the preset curve relationship is used to characterize a curve relationship between the valve opening of the electric pressure reducing valve and the thermal parameter of the auxiliary steam system; The second control module is used to control the valve opening of the electric pressure reducing valve to reach the target valve opening, and when the new thermal parameters of the auxiliary steam system reach the target thermal parameters, control the valve opening of the electric pressure reducing valve to zero.

[0012] Optionally, the second control module is used to: In the process of controlling the valve opening of the electric pressure reducing valve to reach the target valve opening, collecting the new thermal parameters of the auxiliary steam system, and when the new thermal parameters reach the target thermal parameters, controlling the valve opening of the electric pressure reducing valve to zero, or, The valve opening of the electric pressure reducing valve is controlled to be the target valve opening, and after a preset control time, when the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero.

[0013] Optionally, the first determining module is used to: The target valve opening is determined based on the preset curve relationship and the flow parameter and / or pressure parameter in the target thermal parameters, wherein the preset curve relationship is used to characterize the curve relationship between the valve opening of the electric pressure reducing valve and the flow parameter and pressure parameter of the auxiliary steam system.

[0014] Optionally, the electric pressure reducing valve is arranged on a connecting pipe parallel to the ground in the connecting pipe between the main steam system and the auxiliary steam system.

[0015] Optionally, a first switch is further provided between the main steam system and the electric pressure reducing valve, and the device further comprises: A third control module is used to control the first switch to be in an off state when the auxiliary steam system has an operating failure, so that a relevant user can repair the auxiliary steam system; The fourth control module is used to control the first switch to a closed state when the auxiliary steam system is running stably, so as to control the thermal parameters in the auxiliary steam system through the electric pressure reducing valve.

[0016] In a third aspect, the present disclosure provides a non-temporary computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any one of the methods provided in the first aspect of the present disclosure.

[0017] In a fourth aspect, the present disclosure provides a controller, comprising: a memory having a computer program stored thereon; A processor is used to execute the computer program in the memory to implement the steps of any one of the methods provided in the first aspect of the present disclosure.

[0018] In a fifth aspect, the present disclosure provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of any one of the methods provided in the first aspect of the present disclosure.

[0019] Through the above technical solution, an electric pressure reducing valve is arranged on the connecting pipe between the main steam system and the auxiliary steam system, and the valve opening of the electric pressure reducing valve is controlled according to the thermal parameters of the auxiliary steam system and the target thermal parameters, so that the thermal parameters of the auxiliary steam system reach the target thermal parameters, wherein the target thermal parameters are the thermal parameters that the user expects the auxiliary steam system to reach. By controlling the valve opening of the electric booster valve through the thermal parameters and the target thermal parameters, the intelligent adjustment of the valve opening can be realized, thereby ensuring the stability of the steam source in the steam pump in the auxiliary steam system, and avoiding the tripping of the thermal power generator set.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 is a schematic diagram showing a steam source control method of an auxiliary steam system according to an exemplary embodiment of the present disclosure.

[0022] Figure 2 The figure is an attempt to show a preset curve according to an exemplary embodiment of the present disclosure.

[0023] Figure 3 It is a flow chart showing a steam source control method of an auxiliary steam system according to an exemplary embodiment of the present disclosure.

[0024] Figure 4 It is a schematic diagram of the change between the valve opening and pressure of a quick exhaust valve in the related art.

[0025] Figure 5 It is a schematic diagram showing the valve opening and pressure changes of an electric pressure reducing valve according to an exemplary embodiment of the present disclosure.

[0026] Figure 6 It is a schematic diagram showing the regulation characteristics of an electric pressure reducing valve according to an exemplary embodiment of the present disclosure.

[0027] Figure 7 is a schematic diagram showing a steam source control device of an auxiliary steam system according to an exemplary embodiment of the present disclosure.

[0028] Figure 8 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0029] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0030] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0031] With the national industrial adjustment, thermal power generating units need to carry out deep peak regulation according to the requirements of the power grid.

[0032] In the related art, when the load of a thermal power generating unit is lower than 470MW, the steam pressure transmitted from the main steam system in the thermal power generating unit to the auxiliary steam system is lower than 0.8MPa, which cannot meet the operation of the auxiliary steam system. Therefore, a quick exhaust valve is provided in the connecting pipe between the main steam system and the auxiliary steam system to control the pressure of the steam entering the auxiliary steam system.

[0033] However, the inventors discovered that when the steam pressure entering the auxiliary steam system is adjusted by the method in the relevant technology, the quick exhaust valve needs to be opened at about 20% to start flowing with load. The dead zone of its adjustment is large and it cannot be put into automatic operation. The pressure needs to be adjusted manually, which may cause the steam pump to lose the steam source under low load conditions, thereby causing the boiler water supply to be interrupted and the unit to trip, seriously threatening the safe operation of the unit.

[0034] In view of this, the present disclosure provides a steam source control method and a corresponding device for an auxiliary steam system to solve the technical problems existing in the above-mentioned related technologies.

[0035] like Figure 1 As shown, Figure 1 is a schematic diagram showing a steam source control method for an auxiliary steam system according to an exemplary embodiment of the present disclosure, with reference to Figure 1 , applied to a thermal power generating set, and an electric pressure reducing valve is arranged on a connecting pipe between a main steam system and an auxiliary steam system of the thermal power generating set, and the method comprises: S101: Determine thermal parameters of the auxiliary steam system; S102: Controlling the valve opening of the electric pressure reducing valve according to the thermal parameters and the target thermal parameters, so that the thermal parameters of the auxiliary steam system reach the target thermal parameters, wherein the target thermal parameters are the thermal parameters that the user expects the auxiliary steam system to reach.

[0036] Through the above technical solution, an electric pressure reducing valve is arranged on the connecting pipe between the main steam system and the auxiliary steam system, and the valve opening of the electric pressure reducing valve is controlled according to the thermal parameters of the auxiliary steam system and the target thermal parameters, so that the thermal parameters of the auxiliary steam system reach the target thermal parameters, wherein the target thermal parameters are the thermal parameters that the user expects the auxiliary steam system to reach. By controlling the valve opening of the electric booster valve through the thermal parameters and the target thermal parameters, the intelligent adjustment of the valve opening can be realized, thereby ensuring the stability of the steam source in the steam pump in the auxiliary steam system, and avoiding the tripping of the thermal power generator set.

[0037] In order to enable those skilled in the art to better understand the steam source control method for the auxiliary steam system provided by the present disclosure, the above steps are described in detail with examples below.

[0038] For example, an electric pressure reducing valve is a device that can be used to regulate the pressure in a system.

[0039] In the embodiment of the present disclosure, an electric pressure reducing valve can be set on the connecting pipe between the main steam system and the auxiliary steam system, and by controlling the valve of the electric pressure reducing valve, the steam flow and pressure transmitted from the main steam to the auxiliary steam system can be controlled, thereby ensuring the stability and safety of the operation of the auxiliary steam system.

[0040] In a possible manner, the electric pressure reducing valve is arranged on a connecting pipe parallel to the ground in the connecting pipes between the main steam system and the auxiliary steam system.

[0041] It should be understood that when the electric pressure reducing valve is set on the connecting pipe, it is mainly set in the connecting pipe horizontal to the ground, and the input end of the electric pressure reducing valve is connected to the output end of the main steam system, and the output end of the electric pressure reducing valve is connected to the input end of the auxiliary steam system. And the electric pressure reducing valve can be a quick-opening high-pressure pressure reducing valve, whose medium flow rate is 600t / h and pressure is 25Mpa / 4Mpa, and the embodiments of the present disclosure do not make specific limitations on this. When the output end of the electric pressure reducing valve is connected to the input end of the auxiliary steam system, it can be connected to the auxiliary steam system through a cooling device, wherein the cooling device includes a cooler and a cooling water device, and the cooler and the cooling water device can be the cooler and the cooling water device provided in the relevant technology, and the embodiments of the present disclosure do not make specific limitations on this.

[0042] In a possible manner, a first switch is further provided between the main steam system and the electric pressure reducing valve, and the method further comprises: When the auxiliary steam system fails in operation, the first switch is controlled to be in an off state so that a relevant user can repair the auxiliary steam system; When the auxiliary steam system is running stably, the first switch is controlled to be in a closed state, so as to control the thermal parameters in the auxiliary steam system through the electric pressure reducing valve.

[0043] It should be understood that a first switch can also be provided on the connecting pipe between the input end of the electric pressure reducing valve and the output end of the main steam system, and the first switch can be used to control the startup or shutdown of the auxiliary steam system. When a fault occurs in the auxiliary steam system, the first switch can be controlled to be in an open state to shut down the steam source of the auxiliary steam system and stop the auxiliary steam system from entering the operating state, thereby ensuring the safety of the maintenance of the auxiliary steam system by relevant personnel. When the auxiliary steam system needs to operate stably, the first switch can be controlled to be in a closed state to adjust the steam flow and pressure parameters entering the auxiliary steam system by adjusting the electric pressure reducing valve, so that the thermal parameters in the auxiliary steam system reach the target thermal parameters. Among them, the first switch can be an electric isolation tee, and this is not specifically limited in the embodiments of the present disclosure.

[0044] For example, the thermal parameters may be pressure parameters and flow parameters of the auxiliary steam system during operation. The thermal parameters in the auxiliary steam system may be used to ensure the safety, stability and reliability of the operation of the auxiliary steam system.

[0045] For example, the target thermal parameters may be thermal parameters that the user expects the auxiliary steam system to achieve. When the user expects the thermal parameters of the auxiliary steam system to reach the target thermal parameters, the valve opening of the electric pressure reducing valve may be controlled according to the thermal parameters and the target thermal parameters, and then the steam flow and steam pressure input from the main steam system to the auxiliary steam system may be controlled by controlling the valve opening of the electric pressure reducing valve.

[0046] In a possible manner, controlling the valve opening of the electric pressure reducing valve according to the thermal parameter and the target thermal parameter includes: When the thermal parameters do not reach the target thermal parameters, the target valve opening is determined according to a preset curve relationship and the target thermal parameters, wherein the preset curve relationship is used to characterize the curve relationship between the valve opening of the electric pressure reducing valve and the thermal parameters of the auxiliary steam system; When the valve opening of the electric pressure reducing valve is controlled to reach the target valve opening and the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero.

[0047] It should be understood that the preset curve may be a curve between the valve opening and the thermal parameters of the auxiliary steam system. Figure 2 As shown, the curve in the figure can be expressed as a curve between valve opening and thermal parameters. According to the curve, the steam flow rate corresponding to the valve opening of the electric pressure reducing valve under different valve opening conditions can be understood. Therefore, the target valve opening can be determined according to the target thermal parameters. After that, the valve opening of the electric booster valve can be controlled to reach the target valve opening, and when the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric booster valve is controlled to be zero. In this way, the accuracy and precision of controlling the steam flow in the auxiliary steam system can be improved.

[0048] When the thermal parameters reach the target thermal parameters, the valve of the electric pressure reducing valve can be controlled to be in a closed state, thereby ensuring the stability and safety of the auxiliary steam system operation.

[0049] In a possible manner, when the valve opening of the electric pressure reducing valve is controlled to reach the target valve opening and the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero, including: In the process of controlling the valve opening of the electric pressure reducing valve to reach the target valve opening, collecting the new thermal parameters of the auxiliary steam system, and when the new thermal parameters reach the target thermal parameters, controlling the valve opening of the electric pressure reducing valve to zero, or, The valve opening of the electric pressure reducing valve is controlled to be the target valve opening, and after a preset control time, when the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero.

[0050] It should be understood that when controlling the valve opening of the electric pressure reducing valve, the valve of the electric pressure reducing valve can be controlled to gradually reach the target valve opening, and in the process of the valve of the electric pressure reducing valve gradually reaching the target valve opening, the new thermal parameters in the auxiliary steam system are measured in real time, and the new thermal parameters are compared with the target thermal parameters. When the new thermal parameters are the same as the target thermal parameters, the valve opening of the electric pressure reducing valve can be controlled to zero to ensure the stability and safety of the operation of the auxiliary steam system.

[0051] In this embodiment, the valve opening of the electric pressure reducing valve can be directly adjusted to the target valve opening, and the valve of the electric pressure reducing valve can be continuously operated when it is at the target valve opening. After running for a preset time, when it is detected that the new thermal parameters in the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero, wherein the preset time is 5s, and this embodiment does not make any specific limitation on this.

[0052] When the valve opening of the electric pressure reducing valve is controlled to reach the target valve opening, and when it is detected that the thermal parameters in the auxiliary steam system have reached the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to zero, which can meet the needs of low-load adjustment during the startup and operation of the thermal power generating set, and can enable the thermal power generating set to perform deep peak regulation according to the instructions of the power grid dispatch, thereby realizing automatic regulation and avoiding the instability or interruption of the steam source of the auxiliary steam system under low-load conditions caused by manual pressure adjustment. At the same time, it can avoid the hidden dangers of boiler feed water fluctuation or water outage, severe unit load fluctuation or unit tripping, and can improve the safety and stability of the thermal power generating set during deep peak regulation.

[0053] In a possible manner, determining the target valve opening according to the preset curve relationship and the target thermal parameters includes: The target valve opening is determined based on the preset curve relationship and the flow parameter and / or pressure parameter in the target thermal parameters, wherein the preset curve relationship is used to characterize the curve relationship between the valve opening of the electric pressure reducing valve and the flow parameter and pressure parameter of the auxiliary steam system.

[0054] It should be understood that the flow parameter in the target thermal parameters can be the flow parameter that the user expects the auxiliary steam system to achieve. When determining the target valve opening, it can be determined according to the preset curve and the flow parameter. For example, as shown in the figure, the horizontal axis can be represented by the valve opening, and the vertical axis can be represented by the flow parameter input from the main steam system to the auxiliary steam system.

[0055] Reference Figure 3 , Figure 3 is a flow chart showing a steam source control method for an auxiliary steam system according to an exemplary embodiment of the present disclosure, such as Figure 3 As shown, the steps of the steam source control method of the auxiliary steam system specifically include: S301: Collect thermal parameters of the auxiliary steam system.

[0056] S302: Whether the thermal parameters are greater than the target thermal parameters. When the thermal parameters are greater than the target thermal parameters, execute step S305; otherwise, execute step S302.

[0057] S303: Determine the target valve opening.

[0058] S304: Determine new thermal parameters in the auxiliary steam system, and judge whether the new thermal parameters are greater than the target thermal parameters. When the new thermal parameters are greater than the target thermal parameters, execute step S305; otherwise, execute step S303.

[0059] S305: Close the valve of the electric pressure reducing valve.

[0060] The specific implementation methods of the above-mentioned process steps have been illustrated in detail above and will not be repeated here. In addition, it should be understood that for the above-mentioned system embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present disclosure is not limited to the order of actions described above. Secondly, those skilled in the art should also know that the embodiments described above belong to preferred embodiments, and the steps involved are not necessarily required by the present disclosure.

[0061] The valve opening of the electric pressure reducing valve is controlled by the above method. The specific valve opening and pressure changes can be referred to Figure 4 ,exist Figure 4 In the figure, the curve where the triangle mark is located can represent the pressure change of the quick exhaust valve, the curve where the circle is located can represent the valve opening of the quick exhaust valve, the horizontal axis represents time, which is more than ten minutes when it is expressed as a time period, and the vertical axis represents the valve opening and the pressure change in the auxiliary steam system. Figure 5 ,exist Figure 5 In the figure, the curve where the triangle mark is located can represent the pressure change in the connecting pipe between the main steam system and the auxiliary steam system, the curve where the circle is located can represent the valve opening of the electric pressure reducing valve, the horizontal axis represents time, the time period of this figure is 4 minutes and 37 seconds, and the vertical axis can represent the valve opening of the electric pressure reducing valve and the pressure change in the auxiliary steam system. Figure 4 and Figure 5 In comparison, the dead zone of the electric pressure reducing valve can be reduced from the original 15%-20% to less than 5%, and the valve opening can be adjusted from the original 15% to 4% to allow flow with load. The electric automatic valve can be automatically adjusted according to the unit load, thereby avoiding unstable or interrupted steam source for small steam turbines under low load conditions caused by manual pressure adjustment, thereby ensuring safe and stable operation of the unit.

[0062] Reference Figure 6 ,like Figure 6 As shown, in Figure 6 In the figure, the curve where the triangle mark is located can represent the pressure in the connecting pipe between the main steam system and the auxiliary steam system, the curve where the circle is located can represent the valve opening of the electric pressure reducing valve, the horizontal axis represents time, and the curve where the square is located can represent the pressure change curve in the auxiliary steam system. By installing an electric pressure reducing valve on the connecting pipe between the main steam system and the auxiliary steam system, it can be ensured that the pressure in the auxiliary steam system fluctuates smoothly with the change of the valve position, thereby ensuring the stability of the system operation.

[0063] Based on the same concept, this embodiment also discloses a steam source control device for an auxiliary steam system, which is applied to a thermal power generating set, and an electric pressure reducing valve is arranged on the connecting pipe between the main steam system and the auxiliary steam system of the thermal power generating set, referring to Figure 7 , Figure 7 is a schematic diagram showing a steam source control device 700 of an auxiliary steam system according to an exemplary embodiment of the present disclosure, such as Figure 7 As shown, it includes a first determination module 701 and a first control module 702; The first determination module 701 is used to determine the thermal parameters of the auxiliary steam system; The first control module 702 is used to control the valve opening of the electric pressure reducing valve according to the thermal parameters and the target thermal parameters so that the thermal parameters of the auxiliary steam system reach the target thermal parameters, wherein the target thermal parameters are the thermal parameters that the user expects the auxiliary steam system to achieve.

[0064] Optionally, the first control module 702 includes: a second determination module, configured to determine a target valve opening according to a preset curve relationship and the target thermal parameter when the thermal parameter does not reach a target thermal parameter, wherein the preset curve relationship is used to characterize a curve relationship between the valve opening of the electric pressure reducing valve and the thermal parameter of the auxiliary steam system; The second control module is used to control the valve opening of the electric pressure reducing valve to reach the target valve opening, and when the new thermal parameters of the auxiliary steam system reach the target thermal parameters, control the valve opening of the electric pressure reducing valve to zero.

[0065] Optionally, the second control module is used to: In the process of controlling the valve opening of the electric pressure reducing valve to reach the target valve opening, collecting the new thermal parameters of the auxiliary steam system, and when the new thermal parameters reach the target thermal parameters, controlling the valve opening of the electric pressure reducing valve to zero, or, The valve opening of the electric pressure reducing valve is controlled to be the target valve opening, and after a preset control time, when the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero.

[0066] Optionally, the first determining module 701 is used to: The target valve opening is determined based on the preset curve relationship and the flow parameter and / or pressure parameter in the target thermal parameters, wherein the preset curve relationship is used to characterize the curve relationship between the valve opening of the electric pressure reducing valve and the flow parameter and pressure parameter of the auxiliary steam system.

[0067] Optionally, the electric pressure reducing valve is arranged on a connecting pipe parallel to the ground in the connecting pipe between the main steam system and the auxiliary steam system.

[0068] Optionally, a first switch is further provided between the main steam system and the electric pressure reducing valve, and the device further comprises: A third control module is used to control the first switch to be in an off state when the auxiliary steam system has an operating failure, so that a relevant user can repair the auxiliary steam system; The fourth control module is used to control the first switch to a closed state when the auxiliary steam system is running stably, so as to control the thermal parameters in the auxiliary steam system through the electric pressure reducing valve.

[0069] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0070] Based on the same concept, the present embodiment further discloses a non-temporary computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the steam source control method of the auxiliary steam system disclosed in the present embodiment are implemented.

[0071] Based on the same concept, this embodiment also discloses a controller, including: a memory having a computer program stored thereon; A processor is used to execute the computer program in the memory to implement the steps of the steam source control method of the auxiliary steam system.

[0072] Based on the same concept, this embodiment also discloses a computer program product, including a computer program, which implements the steps of the steam source control method of the auxiliary steam system when executed by a processor.

[0073] Figure 8 FIG. 8 is a block diagram of an electronic device 800 according to an exemplary embodiment. Figure 8 As shown, the electronic device 800 may include: a processor 801 , a memory 802 . The electronic device 800 may also include one or more of a multimedia component 803 , an input / output (I / O) interface 804 , and a communication component 805 .

[0074] The processor 801 is used to control the overall operation of the electronic device 800 to complete all or part of the steps in the steam source control method of the auxiliary steam system. The memory 802 is used to store various types of data to support the operation of the electronic device 800. For example, these data may include instructions for any application or method used to operate on the electronic device 800, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 802 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, disk or optical disk. The multimedia component 803 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 802 or sent through the communication component 805. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 804 provides an interface between the processor 801 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 805 is used for wired or wireless communication between the electronic device 800 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 805 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0075] In an exemplary embodiment, the electronic device 800 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned steam source control method of the auxiliary steam system.

[0076] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the steam source control method of the auxiliary steam system are implemented. For example, the computer-readable storage medium can be the memory 802 including the program instructions, and the program instructions can be executed by the processor 801 of the electronic device 800 to complete the steam source control method of the auxiliary steam system.

[0077] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0078] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0079] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A steam source control method for an auxiliary steam system, characterized in that: The method is applied to a thermal power generating set, and an electric pressure reducing valve is arranged on a connecting pipe between a main steam system and an auxiliary steam system of the thermal power generating set. The method comprises: Determining thermal parameters of the auxiliary steam system; According to the thermal parameters and the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled so that the thermal parameters of the auxiliary steam system reach the target thermal parameters, wherein the target thermal parameters are the thermal parameters that the user expects the auxiliary steam system to achieve.

2. The steam source control method of the auxiliary steam system according to claim 1, characterized in that: The controlling the valve opening of the electric pressure reducing valve according to the thermal parameters and the target thermal parameters comprises: When the thermal parameters do not reach the target thermal parameters, the target valve opening is determined according to a preset curve relationship and the target thermal parameters, wherein the preset curve relationship is used to characterize the curve relationship between the valve opening of the electric pressure reducing valve and the thermal parameters of the auxiliary steam system; When the valve opening of the electric pressure reducing valve is controlled to reach the target valve opening and the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero.

3. The steam source control method of the auxiliary steam system according to claim 2, characterized in that: When the valve opening of the electric pressure reducing valve is controlled to reach the target valve opening and the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero, including: In the process of controlling the valve opening of the electric pressure reducing valve to reach the target valve opening, collecting the new thermal parameters of the auxiliary steam system, and when the new thermal parameters reach the target thermal parameters, controlling the valve opening of the electric pressure reducing valve to zero, or, The valve opening of the electric pressure reducing valve is controlled to be the target valve opening, and after a preset control time, when the new thermal parameters of the auxiliary steam system reach the target thermal parameters, the valve opening of the electric pressure reducing valve is controlled to be zero.

4. The steam source control method of the auxiliary steam system according to claim 2, characterized in that: Determining the target valve opening according to the preset curve relationship and the target thermal parameters includes: The target valve opening is determined based on the preset curve relationship and the flow parameter and / or pressure parameter in the target thermal parameters, wherein the preset curve relationship is used to characterize the curve relationship between the valve opening of the electric pressure reducing valve and the flow parameter and pressure parameter of the auxiliary steam system.

5. The steam source control method of the auxiliary steam system according to any one of claims 1 to 4, characterized in that: The electric pressure reducing valve is arranged on a connecting pipe parallel to the ground in the connecting pipes between the main steam system and the auxiliary steam system.

6. The steam source control method of the auxiliary steam system according to claim 1, characterized in that: A first switch is further provided between the main steam system and the electric pressure reducing valve, and the method further comprises: When the auxiliary steam system fails in operation, the first switch is controlled to be in an off state so that a relevant user can repair the auxiliary steam system; When the auxiliary steam system is running stably, the first switch is controlled to be in a closed state, so as to control the thermal parameters in the auxiliary steam system through the electric pressure reducing valve.

7. A steam source control device for an auxiliary steam system, characterized in that: The invention is applied to a thermal power generating set, and an electric pressure reducing valve is arranged on a connecting pipe between a main steam system and an auxiliary steam system of the thermal power generating set, and comprises a first determining module and a first control module; The first determination module is used to determine the thermal parameters of the auxiliary steam system; The first control module is used to control the valve opening of the electric pressure reducing valve according to the thermal parameters and the target thermal parameters so that the thermal parameters of the auxiliary steam system reach the target thermal parameters, wherein the target thermal parameters are the thermal parameters that the user expects the auxiliary steam system to achieve.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A controller, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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