Steam turbine start-stop control method and system

Abstract

The invention provides a steam turbine start-stop control method and system, and relates to the technical field of start-stop control, and the method comprises the steps: setting a steam turbine start-stop control strategy, obtaining a steam turbine start-stop control instruction, and starting and stopping a steam turbine when the steam turbine start-stop control instruction is monitored; a steam turbine start-stop control platform is constructed, steam turbine start-stop control modules are divided, the running state of a steam turbine is monitored in real time, and running data of the steam turbine are obtained; dividing the start-stop control process of the steam turbine, classifying and summarizing the operation data of the steam turbine according to the division result of the start-stop control process of the steam turbine, performing start-stop simulation control according to the classification and summarizing processing result, and executing the current start-stop control process of the steam turbine after the start-stop simulation control is qualified; when abnormal start-stop data of the steam turbine are monitored, abnormal start-stop alarm data are generated, the corresponding steam turbine start-stop control process is interrupted, and an abnormal control strategy is executed; and the control quality and the control efficiency of steam turbine start-stop control are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of start-stop control, and in particular to a steam turbine start-stop control method and system. Background Art

[0002] With the continuous development of the power industry, steam turbine generator sets ensure the stable operation of the power grid by performing rapid start and stop and rapid response to loads; however, the design of steam turbine start and stop control is complex and involves many technologies. Currently, there are defects in steam turbine start and stop control such as control lag and insufficient control accuracy; in addition, the existing steam turbine start and stop control does not realize automatic start and stop control, and a large amount of manual participation in start and stop control is used, which is prone to start and stop control errors.

[0003] Therefore, the present invention provides a steam turbine start-stop control method and system. Summary of the invention

[0004] The present invention provides a steam turbine start-stop control method and system. The method and system set a steam turbine start-stop control strategy, obtain a steam turbine start-stop control instruction, and start and stop the steam turbine when the steam turbine start-stop control instruction is monitored; construct a steam turbine start-stop control platform, divide the steam turbine start-stop control module, monitor the operating status of the steam turbine in real time and obtain the operating data of the steam turbine; divide the steam turbine start-stop control process, classify and summarize the operating data of the steam turbine according to the division result of the steam turbine start-stop control process, perform start-stop simulation control according to the classification and summary processing result, and execute the current steam turbine start-stop control process when the start-stop simulation control is qualified; when abnormal start-stop data of the steam turbine is monitored, abnormal start-stop alarm data is generated and the corresponding steam turbine start-stop control process is interrupted, and the abnormal control strategy is executed; the control quality and control efficiency of the steam turbine start-stop control are improved.

[0005] The present invention provides a steam turbine start-stop control method, comprising:

[0006] Step 1: Set the steam turbine start-stop control strategy, obtain the steam turbine start-stop control command, and start and stop the steam turbine when the steam turbine start-stop control command is detected;

[0007] Step 2: Build a steam turbine start-stop control platform, divide the steam turbine start-stop control module, monitor the operating status of the steam turbine in real time and obtain the operating data of the steam turbine;

[0008] Step 3: Divide the steam turbine start-stop control process, classify and summarize the steam turbine operation data according to the classification results of the steam turbine start-stop control process, perform start-stop simulation control according to the classification and summary results, and execute the current steam turbine start-stop control process when the start-stop simulation control is qualified;

[0009] Step 4: When abnormal start and stop data of the steam turbine is monitored, abnormal start and stop alarm data is generated and the corresponding steam turbine start and stop control process is interrupted, and the abnormal control strategy is executed.

[0010] According to a steam turbine start-stop control method provided by the present invention, a steam turbine start-stop control strategy is set, a steam turbine start-stop control instruction is obtained, and when the steam turbine start-stop control instruction is monitored, the steam turbine is started and stopped, including:

[0011] Setting a steam turbine start-stop control strategy, wherein the steam turbine start-stop control strategy includes: a steam turbine start control strategy and a steam turbine stop control strategy;

[0012] The steam turbine start-stop control instruction is obtained according to the user setting or the automatic setting. When the steam turbine start-stop control instruction is monitored, the steam turbine start-stop control strategy is applied to start and stop the steam turbine according to the steam turbine start-stop control instruction.

[0013] According to a steam turbine start-stop control method provided by the present invention, a steam turbine start-stop control platform is constructed, a steam turbine start-stop control module is divided, the operating state of the steam turbine is monitored in real time and the operating data of the steam turbine is obtained, including:

[0014] Build a steam turbine start-stop control platform, divide the steam turbine start-stop control module according to the steam turbine start-stop control function, and obtain the steam turbine start-stop monitoring submodule, the steam turbine start-stop transmission submodule, the steam turbine start-stop processing submodule, and the steam turbine start-stop display submodule;

[0015] The steam turbine start-stop monitoring submodule monitors the operating state of the steam turbine in real time, wherein the operating state of the steam turbine includes: normal operating state, abnormal operating state and shutdown operating state;

[0016] Acquiring the operation data of the steam turbine according to the steam turbine start-stop transmission submodule, wherein the operation data of the steam turbine includes: start-stop preparation operation data, start-stop control operation data and other operation data;

[0017] According to the steam turbine start-stop processing submodule, the operation data of the steam turbine is analyzed and processed in real time;

[0018] The operation status of the steam turbine is displayed in real time according to the steam turbine start and stop display submodule.

[0019] According to a steam turbine start-stop control method provided by the present invention, the steam turbine start-stop control process is divided into:

[0020] The steam turbine start-stop control process is obtained, the steam turbine start-stop control node is set, and the steam turbine start-stop control process is divided, wherein the steam turbine start-stop control process includes: a start preparation process, a start control process, a stop preparation process, and a stop control process.

[0021] According to a steam turbine start-stop control method provided by the present invention, the operation data of the steam turbine is classified and summarized according to the classification result of the steam turbine start-stop control process, and the start-stop simulation control is performed according to the classification result. When the start-stop simulation control is qualified, the current steam turbine start-stop control process is executed, including:

[0022] Preprocess the operation data of the steam turbine to remove erroneous and abnormal data, and classify and summarize the operation data of the steam turbine after data preprocessing according to the division results of the steam turbine start-stop control process;

[0023] A steam turbine start-stop simulation control model is constructed based on the historical operation data of the steam turbine, a normal operating range of the steam turbine when it is in normal operation is obtained based on the historical operation data of the steam turbine, and a simulation parameter threshold is set;

[0024] According to the classification and summary processing results, start-stop simulation parameters are set to perform steam turbine start-stop simulation control and obtain simulation operation data;

[0025] Draw a simulated operation control curve based on the simulated operation data and draw an actual operation control curve based on the classification and summary processing results;

[0026] According to the historical operation data of the steam turbine, the start-stop control attenuation data of the steam turbine in the start-stop control process division result of the steam turbine is obtained;

[0027] According to the simulated operation control curve, the actual operation control curve and the start-stop control attenuation data of the steam turbine, the simulated operation matching value of the steam turbine start-stop control process division result is calculated;

[0028] Wherein, F represents the simulated operation matching value of the steam turbine start-stop control process division result; xi1 represents the quantized value of the i1th simulated operation data in the simulated operation control curve; yj1 represents the quantized value of the j1th operation data in the actual operation curve; zk1 represents the start-stop control attenuation data of the steam turbine in the k1th steam turbine start-stop control process division result determined according to the historical operation data; n1 represents the number of simulated operation data in the simulated operation control curve; m1 represents the number of operation data in the actual operation curve; L1 represents the number of steam turbine start-stop control process division results of the steam turbine that has been running in the steam turbine start-stop control process division result;

[0029] When the simulation operation matching value of the steam turbine start-stop control process division result is not lower than the preset simulation operation value, the start-stop simulation control is determined to be qualified, and the current steam turbine start-stop control process is executed;

[0030] When the simulation operation matching value of the turbine start-stop control process division result is lower than the preset simulation operation value, the start-stop simulation control is judged to be unqualified, the turbine start-stop control process is interrupted according to the turbine start-stop control node and the current turbine start-stop control process is marked as an abnormal start-stop control process.

[0031] According to a steam turbine start-stop control method provided by the present invention, when abnormal start-stop data of the steam turbine is monitored, abnormal start-stop alarm data is generated and the corresponding steam turbine start-stop control process is interrupted, and an abnormal control strategy is executed, including:

[0032] When it is monitored that the operating data of the steam turbine exceeds the normal operating range of the steam turbine during normal operation, the operating data of the steam turbine is determined to be abnormal start-stop data;

[0033] According to the abnormal start-stop data and the abnormal start-stop control process, abnormal start-stop alarm data is generated, the corresponding steam turbine start-stop control process is interrupted, and the abnormal control strategy is executed.

[0034] A steam turbine start-stop control method provided by the present invention further includes:

[0035] Construct a visual display interface for steam turbine start-stop control to visualize the steam turbine's operating status, operating data, and start-stop simulation control in real time;

[0036] Set user access rights to allow users to access the visual display interface of steam turbine start and stop control;

[0037] Set user control authority to allow users to manually control the start and stop of the steam turbine;

[0038] Real-time recording and storage of operating data during the turbine start and stop control process.

[0039] The present invention provides a steam turbine start-stop control system, comprising:

[0040] The start-stop control module is used to set the start-stop control strategy of the steam turbine, obtain the start-stop control instruction of the steam turbine, and start-stop the steam turbine when the start-stop control instruction of the steam turbine is detected;

[0041] The start-stop monitoring module is used to build a steam turbine start-stop control platform, divide the steam turbine start-stop control module, monitor the operating status of the steam turbine in real time and obtain the operating data of the steam turbine;

[0042] The start-stop simulation module is used to divide the start-stop control process of the steam turbine, classify and summarize the operation data of the steam turbine according to the division result of the start-stop control process of the steam turbine, and perform start-stop simulation control according to the classification and summary processing result. When the start-stop simulation control is qualified, the current start-stop control process of the steam turbine is executed;

[0043] The start-stop abnormality module is used to generate abnormal start-stop alarm data and interrupt the corresponding steam turbine start-stop control process and execute the abnormal control strategy when abnormal start-stop data of the steam turbine is monitored.

[0044] Compared with the prior art, the beneficial effects of this application are as follows:

[0045] By setting the steam turbine start-stop control strategy, the steam turbine start-stop control instruction is obtained. When the steam turbine start-stop control instruction is monitored, the steam turbine is started and stopped; a steam turbine start-stop control platform is constructed, and the steam turbine start-stop control module is divided to monitor the operating status of the steam turbine in real time and obtain the operating data of the steam turbine; the steam turbine start-stop control process is divided, and the operating data of the steam turbine is classified and summarized according to the division result of the steam turbine start-stop control process, and the start-stop simulation control is performed according to the classification and summary result. When the start-stop simulation control is qualified, the current steam turbine start-stop control process is executed; when abnormal start-stop data of the steam turbine is monitored, abnormal start-stop alarm data is generated and the corresponding steam turbine start-stop control process is interrupted, and the abnormal control strategy is executed; the control quality and control efficiency of the steam turbine start-stop control are improved.

[0046] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0047] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0049] Figure 1 It is a flow chart of a steam turbine start-stop control method provided by an embodiment of the present invention;

[0050] Figure 2 It is a structural schematic diagram of a steam turbine start-stop control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0051] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0052] Embodiment 1:

[0053] The embodiment of the present invention provides a steam turbine start-stop control method, such as Figure 1As shown, including:

[0054] Step 1: Set the steam turbine start-stop control strategy, obtain the steam turbine start-stop control command, and start and stop the steam turbine when the steam turbine start-stop control command is detected;

[0055] Step 2: Build a steam turbine start-stop control platform, divide the steam turbine start-stop control module, monitor the operating status of the steam turbine in real time and obtain the operating data of the steam turbine;

[0056] Step 3: Divide the steam turbine start-stop control process, classify and summarize the steam turbine operation data according to the classification results of the steam turbine start-stop control process, perform start-stop simulation control according to the classification and summary results, and execute the current steam turbine start-stop control process when the start-stop simulation control is qualified;

[0057] Step 4: When abnormal start and stop data of the steam turbine is monitored, abnormal start and stop alarm data is generated and the corresponding steam turbine start and stop control process is interrupted, and the abnormal control strategy is executed.

[0058] In this embodiment, the steam turbine start-stop control strategy refers to a strategy for controlling the steam turbine to perform rapid start-stop control.

[0059] In this embodiment, the steam turbine start-stop control instruction refers to an instruction for controlling the steam turbine to start and stop.

[0060] In this embodiment, the steam turbine start-stop control platform refers to a platform used to implement steam turbine start-stop control.

[0061] In this embodiment, the turbine start-stop control module refers to a control module determined according to the turbine start-stop control function, including a turbine start-stop monitoring submodule, a turbine start-stop transmission submodule, a turbine start-stop processing submodule and a turbine start-stop display submodule.

[0062] In this embodiment, the steam turbine start-stop monitoring submodule is used to monitor the operating state of the steam turbine in real time, for example, to monitor whether the steam turbine is in a normal operating state, an abnormal operating state, and a shutdown operating state.

[0063] In this embodiment, the steam turbine start-stop transmission submodule is used to transmit the operation data of the steam turbine.

[0064] In this embodiment, the steam turbine start-stop processing submodule is used to perform real-time analysis and processing on the operation data of the steam turbine.

[0065] In this embodiment, the steam turbine start and stop display module is used to display the operating status of the steam turbine in real time.

[0066] In this embodiment, the operating state of the steam turbine includes: a normal operating state, an abnormal operating state and a shutdown operating state.

[0067] In this embodiment, the operation data of the steam turbine refers to data generated during the operation of the steam turbine, wherein the operation process includes a normal operation process and a start-stop control operation process.

[0068] In this embodiment, the operation data of the steam turbine is classified and summarized according to the division result of the steam turbine start-stop control process. For example, the operation data of the steam turbine startup process is summarized.

[0069] In this embodiment, the start-stop simulation control refers to the simulation operation of the start-stop control of the steam turbine according to the classification and summary processing results.

[0070] In this embodiment, the abnormal start / stop data refers to data in which the operation data of the steam turbine exceeds the operation data range.

[0071] In this embodiment, the abnormal start-stop alarm data refers to alarm data generated according to the abnormal start-stop data.

[0072] In this embodiment, the abnormal control strategy refers to a strategy for eliminating abnormal start and stop data.

[0073] The working principle and beneficial effects of the above technical scheme are: by setting the turbine start-stop control strategy, the turbine start-stop control instruction is obtained, and when the turbine start-stop control instruction is monitored, the turbine is started and stopped; a turbine start-stop control platform is constructed, the turbine start-stop control module is divided, the operating status of the turbine is monitored in real time and the operating data of the turbine is obtained; the turbine start-stop control process is divided, and the operating data of the turbine is classified and summarized according to the division result of the turbine start-stop control process, and the start-stop simulation control is performed according to the classification and summary result. When the start-stop simulation control is qualified, the current turbine start-stop control process is executed; when abnormal start-stop data of the turbine is monitored, abnormal start-stop alarm data is generated and the corresponding turbine start-stop control process is interrupted, and the abnormal control strategy is executed; the control quality and control efficiency of the turbine start-stop control are improved.

[0074] Embodiment 2:

[0075] The embodiment of the present invention provides a steam turbine start-stop control method, which sets a steam turbine start-stop control strategy, obtains a steam turbine start-stop control instruction, and starts and stops the steam turbine when the steam turbine start-stop control instruction is detected, including:

[0076] Setting a steam turbine start-stop control strategy, wherein the steam turbine start-stop control strategy includes: a steam turbine start control strategy and a steam turbine stop control strategy;

[0077] The steam turbine start-stop control instruction is obtained according to the user setting or the automatic setting. When the steam turbine start-stop control instruction is monitored, the steam turbine start-stop control strategy is applied to start and stop the steam turbine according to the steam turbine start-stop control instruction.

[0078] In this embodiment, the user setting refers to the steam turbine start-stop control setting determined according to the user operation; the automatic setting refers to the steam turbine start-stop control setting automatically generated according to the steam turbine start-stop control platform.

[0079] The working principle and beneficial effect of the above technical solution are: by setting the turbine start-stop control strategy, the turbine start-stop control instruction is obtained, and when the turbine start-stop control instruction is monitored, the turbine is started and stopped, ensuring the normal start-stop control of the turbine.

[0080] Embodiment 3:

[0081] The embodiment of the present invention provides a steam turbine start-stop control method, constructs a steam turbine start-stop control platform, divides the steam turbine start-stop control module, monitors the operating state of the steam turbine in real time and obtains the operating data of the steam turbine, including:

[0082] Build a steam turbine start-stop control platform, divide the steam turbine start-stop control module according to the steam turbine start-stop control function, and obtain the steam turbine start-stop monitoring submodule, the steam turbine start-stop transmission submodule, the steam turbine start-stop processing submodule, and the steam turbine start-stop display submodule;

[0083] The steam turbine start-stop monitoring submodule monitors the operating state of the steam turbine in real time, wherein the operating state of the steam turbine includes: normal operating state, abnormal operating state and shutdown operating state;

[0084] Acquiring the operation data of the steam turbine according to the steam turbine start-stop transmission submodule, wherein the operation data of the steam turbine includes: start-stop preparation operation data, start-stop control operation data and other operation data;

[0085] According to the steam turbine start-stop processing submodule, the operation data of the steam turbine is analyzed and processed in real time;

[0086] The operation status of the steam turbine is displayed in real time according to the steam turbine start and stop display submodule.

[0087] In this embodiment, the steam turbine start-stop control functions include: monitoring function, power transmission, data processing function and display function.

[0088] In this embodiment, the steam turbine start-stop processing submodule performs real-time analysis and processing on the operating data of the steam turbine to determine the operating status of the steam turbine.

[0089] The working principle and beneficial effects of the above technical solution are: by constructing a turbine start-stop control platform, dividing the turbine start-stop control module, real-time monitoring of the turbine operating status and obtaining the turbine operating data, laying the foundation for subsequent turbine start-stop control.

[0090] Embodiment 4:

[0091] The embodiment of the present invention provides a steam turbine start-stop control method, which divides the steam turbine start-stop control process into:

[0092] The steam turbine start-stop control process is obtained, the steam turbine start-stop control node is set, and the steam turbine start-stop control process is divided, wherein the steam turbine start-stop control process includes: a start preparation process, a start control process, a stop preparation process, and a stop control process.

[0093] In this embodiment, the steam turbine start-stop control node refers to a node used to divide the steam turbine start-stop control process, for example, the steam turbine start-stop control node a1 between the start preparation process and the start control process.

[0094] In this embodiment, the steam turbine start-stop control process refers to a process segment determined by dividing according to the steam turbine start-stop control nodes, that is, dividing an overall process into a plurality of node segment processes.

[0095] The working principle and beneficial effect of the above technical solution are: by dividing the steam turbine start-stop control process, it is convenient to perform fine control on the subsequent steam turbine start-stop control.

[0096] Embodiment 5:

[0097] The embodiment of the present invention provides a steam turbine start-stop control method, which classifies and summarizes the operation data of the steam turbine according to the classification result of the steam turbine start-stop control process, performs start-stop simulation control according to the classification result, and executes the current steam turbine start-stop control process when the start-stop simulation control is qualified, including:

[0098] Preprocess the operation data of the steam turbine to remove erroneous and abnormal data, and classify and summarize the operation data of the steam turbine after data preprocessing according to the division results of the steam turbine start-stop control process;

[0099] A steam turbine start-stop simulation control model is constructed based on the historical operation data of the steam turbine, a normal operating range of the steam turbine when it is in normal operation is obtained based on the historical operation data of the steam turbine, and a simulation parameter threshold is set;

[0100] According to the classification and summary processing results, start-stop simulation parameters are set to perform steam turbine start-stop simulation control and obtain simulation operation data;

[0101] Draw a simulated operation control curve based on the simulated operation data and draw an actual operation control curve based on the classification and summary processing results;

[0102] According to the historical operation data of the steam turbine, the start-stop control attenuation data of the steam turbine in the start-stop control process division result of the steam turbine is obtained;

[0103] According to the simulated operation control curve, the actual operation control curve and the start-stop control attenuation data of the steam turbine, the simulated operation matching value of the steam turbine start-stop control process division result is calculated;

[0104] Wherein, F represents the simulated operation matching value of the steam turbine start-stop control process division result; xi1 represents the quantized value of the i1th simulated operation data in the simulated operation control curve; yj1 represents the quantized value of the j1th operation data in the actual operation curve; zk1 represents the start-stop control attenuation data of the steam turbine in the k1th steam turbine start-stop control process division result determined according to the historical operation data; n1 represents the number of simulated operation data in the simulated operation control curve; m1 represents the number of operation data in the actual operation curve; L1 represents the number of steam turbine start-stop control process division results of the steam turbine that has been running in the steam turbine start-stop control process division result;

[0105] When the simulation operation matching value of the steam turbine start-stop control process division result is not lower than the preset simulation operation value, the start-stop simulation control is determined to be qualified, and the current steam turbine start-stop control process is executed;

[0106] When the simulation operation matching value of the turbine start-stop control process division result is lower than the preset simulation operation value, the start-stop simulation control is judged to be unqualified, the turbine start-stop control process is interrupted according to the turbine start-stop control node and the current turbine start-stop control process is marked as an abnormal start-stop control process.

[0107] In this embodiment, data preprocessing of the operation data of the steam turbine refers to eliminating erroneous data and abnormal data in the operation data of the steam turbine, wherein the abnormal data refers to data generated due to data monitoring and other reasons, such as missing data and abnormal data units.

[0108] In this embodiment, the operation data of the steam turbine after data preprocessing is classified and summarized according to the result of the division of the steam turbine start-stop control process. For example, the data belonging to the steam turbine start-up preparation process in the operation data of the steam turbine after data preprocessing is classified and summarized into one place.

[0109] In this embodiment, the steam turbine start-stop simulation control model is a model for simulating the control of the steam turbine start-stop control process.

[0110] In this embodiment, the normal operating range of the steam turbine when it is operating normally is obtained based on the historical operating data of the steam turbine, for example, the normal operating range (a1, a2) when the steam turbine is operating normally, that is, when the operating data of the steam turbine is in the interval (a1, a2), it is determined that the steam turbine is in a normal operating state.

[0111] In this embodiment, the simulation parameter threshold refers to the model parameter of the turbine start-stop simulation control model set according to the normal operating range when the turbine operates normally. For example, the simulation parameter threshold b2 is set according to the normal operating range (a1, a2) when the turbine operates normally.

[0112] In this embodiment, the simulation parameter threshold is set to ensure the normality of the simulation of the steam turbine start-stop simulation control performed by the steam turbine start-stop simulation control model, that is, the steam turbine is in normal operation during the steam turbine start-stop simulation control.

[0113] In this embodiment, the start-stop simulation parameters refer to parameter data for the user to perform steam turbine start-stop simulation control determined according to the classification and summary processing results.

[0114] In this embodiment, the simulation operation data refers to the data obtained by inputting the start-stop simulation parameters into the steam turbine start-stop simulation control model.

[0115] In this embodiment, the simulation operation control curve refers to a curve drawn according to the simulation operation data, and is used to intuitively represent the simulation operation data.

[0116] In this embodiment, the actual operation control curve refers to a curve drawn according to the classification and summary processing results, which is used to intuitively represent the actual operation data.

[0117] In this embodiment, the start-stop control attenuation data of the steam turbine refers to the damage data of the steam turbine during the start-stop control process, which affects the start-stop control accuracy of the steam turbine.

[0118] In this embodiment, the simulated operation matching value of the turbine start-stop control process division result refers to the matching value determined based on the simulated operation control curve, the actual operation control curve and the start-stop control attenuation data of the turbine, which is used to measure the similarity between the actual operation process and the simulated operation process. The higher the simulated operation matching value, the closer the actual operation process is to the simulated operation control process, and the higher the probability that the actual operation process is in a normal operating state.

[0119] In this embodiment, the preset simulation operation value refers to a value set to measure whether the actual operation process matches the simulation operation process.

[0120] In this embodiment, when the simulation operation matching value of the turbine start-stop control process division result is not lower than the preset simulation operation value, the start-stop simulation control is determined to be qualified, and the current turbine start-stop control process is executed. For example, when the start-stop simulation control corresponding to the turbine start-up preparation process is determined to be qualified, the turbine start-up preparation process is executed.

[0121] In this embodiment, the abnormal start-stop control process refers to the steam turbine start-stop control process corresponding to the unqualified start-stop simulation control, that is, the abnormal start-stop control process cannot be ensured to be in a normal operating state during actual operation. Therefore, the abnormal start-stop control process needs to be interrupted according to the steam turbine start-stop control node.

[0122] The working principle and beneficial effects of the above technical scheme are: by classifying and summarizing the operation data of the turbine according to the results of the turbine start-stop control process, start-stop simulation control is performed according to the classification and summary results, and when the start-stop simulation control is qualified, the current turbine start-stop control process is executed, thereby improving the control quality and control efficiency of the turbine start-stop control.

[0123] Embodiment 6:

[0124] The embodiment of the present invention provides a steam turbine start-stop control method, which generates abnormal start-stop alarm data and interrupts the corresponding steam turbine start-stop control process when abnormal start-stop data of the steam turbine is detected, and executes an abnormal control strategy, including:

[0125] When it is monitored that the operating data of the steam turbine exceeds the normal operating range of the steam turbine during normal operation, the operating data of the steam turbine is determined to be abnormal start-stop data;

[0126] According to the abnormal start-stop data and the abnormal start-stop control process, abnormal start-stop alarm data is generated, the corresponding steam turbine start-stop control process is interrupted, and the abnormal control strategy is executed.

[0127] In this embodiment, when it is monitored that the operating data of the steam turbine exceeds the normal operating range when the steam turbine is operating normally, for example, the operating data a1 of the steam turbine, the normal operating range when the steam turbine is operating normally (a2, a3), a1>a2>a3, then the operating data a1 of the steam turbine is not abnormal start and stop data.

[0128] In this embodiment, the normal operating range of the steam turbine during normal operation is determined based on historical data of the steam turbine.

[0129] In this embodiment, the abnormal start-stop control process refers to when the simulation operation matching value of the turbine start-stop control process division result is lower than the preset simulation operation value, the start-stop simulation control is judged to be unqualified, and the turbine start-stop control process is interrupted according to the turbine start-stop control node and the current turbine start-stop control process is marked.

[0130] In this embodiment, interrupting the corresponding steam turbine start and stop control process means pausing the steam turbine start and stop control process, executing the abnormal control strategy to eliminate the abnormal start and stop alarm data, and then enabling the corresponding steam turbine start and stop control process. For example, if the steam turbine start-up control process is abnormal, the steam turbine start-up control process is interrupted, and the abnormal control strategy is executed to eliminate the startup abnormality and then enable the steam turbine start-up control process to perform turbine start-up control.

[0131] In this embodiment, the abnormal control strategy refers to a test for eliminating abnormal start-stop alarm data, for example, adjusting the turbine pressure data to eliminate the abnormal start-stop alarm data.

[0132] The working principle and beneficial effect of the above technical solution are: when abnormal start-stop data of the turbine is monitored, abnormal start-stop alarm data is generated and the corresponding turbine start-stop control process is interrupted, and the abnormal control strategy is executed to ensure the operating stability of the turbine start-stop control process.

[0133] Embodiment 7:

[0134] An embodiment of the present invention provides a steam turbine start-stop control method, further comprising:

[0135] Construct a visual display interface for steam turbine start-stop control to visualize the steam turbine's operating status, operating data, and start-stop simulation control in real time;

[0136] Set user access rights to allow users to access the visual display interface of steam turbine start and stop control;

[0137] Set user control authority to allow users to manually control the start and stop of the steam turbine;

[0138] Real-time recording and storage of operating data during the turbine start and stop control process.

[0139] In this embodiment, the steam turbine start-stop control visualization display interface refers to an interface for visually displaying the operating status of the steam turbine, the operating data of the steam turbine, and the start-stop simulation control of the steam turbine in real time.

[0140] In this embodiment, different user access rights allow access to different contents. For example, user access right a1 only allows the user to view the operating status of the steam turbine.

[0141] In this embodiment, user control authority is set to ensure the safety of turbine start and stop control.

[0142] In this embodiment, user control authority is set to allow the user to manually control the start and stop control of the steam turbine. For example, user b1 manually controls the start and stop control of the steam turbine, generates a manual instruction b1, and implements the start and stop control of the steam turbine.

[0143] The working principle and beneficial effects of the above technical solution are: by constructing a visual display interface for steam turbine start and stop control for real-time visual display, setting user access rights and control rights, and recording and storing operating data in real time, it is beneficial for users to safely and reasonably control the start and stop of the steam turbine.

[0144] Embodiment 8:

[0145] The embodiment of the present invention provides a steam turbine start-stop control system, such as Figure 2 As shown, including:

[0146] The start-stop control module is used to set the start-stop control strategy of the steam turbine, obtain the start-stop control instruction of the steam turbine, and start-stop the steam turbine when the start-stop control instruction of the steam turbine is detected;

[0147] The start-stop monitoring module is used to build a steam turbine start-stop control platform, divide the steam turbine start-stop control module, monitor the operating status of the steam turbine in real time and obtain the operating data of the steam turbine;

[0148] The start-stop simulation module is used to divide the start-stop control process of the steam turbine, classify and summarize the operation data of the steam turbine according to the division result of the start-stop control process of the steam turbine, and perform start-stop simulation control according to the classification and summary processing result. When the start-stop simulation control is qualified, the current start-stop control process of the steam turbine is executed;

[0149] The start-stop abnormality module is used to generate abnormal start-stop alarm data and interrupt the corresponding steam turbine start-stop control process and execute the abnormal control strategy when abnormal start-stop data of the steam turbine is monitored.

[0150] The working principle and beneficial effects of the above technical scheme are: by setting the turbine start-stop control strategy, the turbine start-stop control instruction is obtained, and when the turbine start-stop control instruction is monitored, the turbine is started and stopped; a turbine start-stop control platform is constructed, the turbine start-stop control module is divided, the operating status of the turbine is monitored in real time and the operating data of the turbine is obtained; the turbine start-stop control process is divided, and the operating data of the turbine is classified and summarized according to the division result of the turbine start-stop control process, and the start-stop simulation control is performed according to the classification and summary result. When the start-stop simulation control is qualified, the current turbine start-stop control process is executed; when abnormal start-stop data of the turbine is monitored, abnormal start-stop alarm data is generated and the corresponding turbine start-stop control process is interrupted, and the abnormal control strategy is executed; the control quality and control efficiency of the turbine start-stop control are improved.

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steam turbine start-stop control method, characterized in that: include: Step 1: Set the steam turbine start-stop control strategy, obtain the steam turbine start-stop control command, and start and stop the steam turbine when the steam turbine start-stop control command is detected; Step 2: Build a steam turbine start-stop control platform, divide the steam turbine start-stop control module, monitor the operating status of the steam turbine in real time and obtain the operating data of the steam turbine; Step 3: Divide the steam turbine start-stop control process, classify and summarize the steam turbine operation data according to the classification results of the steam turbine start-stop control process, perform start-stop simulation control according to the classification and summary results, and execute the current steam turbine start-stop control process when the start-stop simulation control is qualified; Step 4: When abnormal start and stop data of the steam turbine is monitored, abnormal start and stop alarm data is generated and the corresponding steam turbine start and stop control process is interrupted, and the abnormal control strategy is executed.

2. A steam turbine start-stop control method according to claim 1, characterized in that: Set the steam turbine start-stop control strategy, obtain the steam turbine start-stop control command, and start and stop the steam turbine when the steam turbine start-stop control command is detected, including: Setting a steam turbine start-stop control strategy, wherein the steam turbine start-stop control strategy includes: a steam turbine start control strategy and a steam turbine stop control strategy; The steam turbine start-stop control instruction is obtained according to the user setting or the automatic setting. When the steam turbine start-stop control instruction is monitored, the steam turbine start-stop control strategy is applied to start and stop the steam turbine according to the steam turbine start-stop control instruction.

3. A steam turbine start-stop control method according to claim 1, characterized in that: Build a steam turbine start-stop control platform, divide the steam turbine start-stop control module, monitor the operating status of the steam turbine in real time and obtain the operating data of the steam turbine, including: Build a steam turbine start-stop control platform, divide the steam turbine start-stop control module according to the steam turbine start-stop control function, and obtain the steam turbine start-stop monitoring submodule, the steam turbine start-stop transmission submodule, the steam turbine start-stop processing submodule, and the steam turbine start-stop display submodule; The steam turbine start-stop monitoring submodule monitors the operating state of the steam turbine in real time, wherein the operating state of the steam turbine includes: normal operating state, abnormal operating state and shutdown operating state; Acquiring the operation data of the steam turbine according to the steam turbine start-stop transmission submodule, wherein the operation data of the steam turbine includes: start-stop preparation operation data, start-stop control operation data and other operation data; According to the steam turbine start-stop processing submodule, the operation data of the steam turbine is analyzed and processed in real time; The operation status of the steam turbine is displayed in real time according to the steam turbine start and stop display submodule.

4. A steam turbine start-stop control method according to claim 1, characterized in that: Divide the steam turbine start and stop control process, including: The steam turbine start-stop control process is obtained, the steam turbine start-stop control node is set, and the steam turbine start-stop control process is divided, wherein the steam turbine start-stop control process includes: a start preparation process, a start control process, a stop preparation process, and a stop control process.

5. A steam turbine start-stop control method according to claim 4, characterized in that: According to the classification result of the steam turbine start-stop control process, the operation data of the steam turbine is classified and summarized, and the start-stop simulation control is performed according to the classification and summary result. When the start-stop simulation control is qualified, the current steam turbine start-stop control process is executed, including: Preprocess the operation data of the steam turbine to remove erroneous and abnormal data, and classify and summarize the operation data of the steam turbine after data preprocessing according to the division results of the steam turbine start-stop control process; A steam turbine start-stop simulation control model is constructed based on the historical operation data of the steam turbine, a normal operating range of the steam turbine when it is in normal operation is obtained based on the historical operation data of the steam turbine, and a simulation parameter threshold is set; According to the classification and summary processing results, start-stop simulation parameters are set to perform steam turbine start-stop simulation control and obtain simulation operation data; Draw a simulated operation control curve based on the simulated operation data and draw an actual operation control curve based on the classification and summary processing results; According to the historical operation data of the steam turbine, the start-stop control attenuation data of the steam turbine in the start-stop control process division result of the steam turbine is obtained; According to the simulated operation control curve, the actual operation control curve and the start-stop control attenuation data of the steam turbine, the simulated operation matching value of the steam turbine start-stop control process division result is calculated; Wherein, F represents the simulated operation matching value of the steam turbine start-stop control process division result; xi1 represents the quantized value of the i1th simulated operation data in the simulated operation control curve; yj1 represents the quantized value of the j1th operation data in the actual operation curve; zk1 represents the start-stop control attenuation data of the steam turbine in the k1th steam turbine start-stop control process division result determined according to the historical operation data; n1 represents the number of simulated operation data in the simulated operation control curve; m1 represents the number of operation data in the actual operation curve; L1 represents the number of steam turbine start-stop control process division results of the steam turbine that has been running in the steam turbine start-stop control process division result; When the simulation operation matching value of the steam turbine start-stop control process division result is not lower than the preset simulation operation value, the start-stop simulation control is determined to be qualified, and the current steam turbine start-stop control process is executed; When the simulation operation matching value of the turbine start-stop control process division result is lower than the preset simulation operation value, the start-stop simulation control is judged to be unqualified, the turbine start-stop control process is interrupted according to the turbine start-stop control node and the current turbine start-stop control process is marked as an abnormal start-stop control process.

6. A steam turbine start-stop control method according to claim 1, characterized in that: When abnormal start and stop data of the steam turbine is detected, abnormal start and stop alarm data is generated and the corresponding steam turbine start and stop control process is interrupted, and the abnormal control strategy is executed, including: When it is monitored that the operating data of the steam turbine exceeds the normal operating range of the steam turbine during normal operation, the operating data of the steam turbine is determined to be abnormal start-stop data; According to the abnormal start-stop data and the abnormal start-stop control process, abnormal start-stop alarm data is generated, the corresponding steam turbine start-stop control process is interrupted, and the abnormal control strategy is executed.

7. A steam turbine start-stop control method according to claim 1, characterized in that: Also includes: Construct a visual display interface for steam turbine start-stop control to visualize the steam turbine's operating status, operating data, and start-stop simulation control in real time; Set user access rights to allow users to access the visual display interface of steam turbine start and stop control; Set user control authority to allow users to manually control the start and stop of the steam turbine; Real-time recording and storage of operating data during the turbine start and stop control process.

8. A steam turbine start-stop control system, characterized in that: include: The start-stop control module is used to set the start-stop control strategy of the steam turbine, obtain the start-stop control instruction of the steam turbine, and start-stop the steam turbine when the start-stop control instruction of the steam turbine is detected; The start-stop monitoring module is used to build a steam turbine start-stop control platform, divide the steam turbine start-stop control module, monitor the operating status of the steam turbine in real time and obtain the operating data of the steam turbine; The start-stop simulation module is used to divide the start-stop control process of the steam turbine, classify and summarize the operation data of the steam turbine according to the division result of the start-stop control process of the steam turbine, and perform start-stop simulation control according to the classification and summary processing result. When the start-stop simulation control is qualified, the current start-stop control process of the steam turbine is executed; The start-stop abnormality module is used to generate abnormal start-stop alarm data and interrupt the corresponding steam turbine start-stop control process and execute the abnormal control strategy when abnormal start-stop data of the steam turbine is monitored.

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