An information visualization and intelligent gas turbine one-key starting method and system

Abstract

The application discloses a kind of information visualization and intelligent gas turbine one-key starting method, by clicking the start button of display screen, to sequentially start the step sequence process of gas turbine and receive the feedback of each step sequence;During the starting process of gas turbine, information interaction can be carried out with multiple systems;When each step sequence process signal and feedback signal are all displayed normally, the gas turbine is started normally;When one of step sequence process signal or feedback signal is abnormal, the signal displayed in the display screen is abnormal, and an alarm signal is sent out.The application discloses a kind of gas turbine one-key starting system, the application can monitor the starting step sequence process in the starting process of gas turbine in real time, when the step sequence is not carried out normally, timely alarm information is sent out, so that personnel can take timely treatment measures, which can not only guarantee the safety of unit, but also improve the work efficiency of power plant.In the starting process, multiple systems can carry out multidimensional information interaction.It provides effective reference for maintenance personnel.

Description

Technical Field

[0001] This invention relates to the field of gas turbine technology, specifically to a method and system for one-button start-up of a gas turbine that features information visualization and intelligence. Background Technology

[0002] Compared to conventional coal-fired power plants, gas-fired power plants have a simpler production process and more frequent and rapid start-ups and shutdowns. Therefore, gas-fired power plants generally have a higher level of automation than coal-fired power plants. The entire gas turbine control system uses multiple automatic control modules (such as speed controllers, load controllers, exhaust temperature controllers, and pressure ratio controllers) to achieve fully automatic control of the gas turbine according to a specific control program. The automatic start-up program for the gas turbine achieves the economic requirements of the shortest start-up time and highest availability for the power plant while ensuring the safe and reliable start-up of the gas turbine.

[0003] Because the gas turbine start-up control system is designed according to standard modules, it places high demands on the unit, equipment, and system. When a unit malfunctions, it will exit the start-up procedure. At this point, power plant maintenance personnel must investigate the cause before the unit can continue starting. Due to the encapsulation of the gas turbine control logic, when a fault occurs during the unit's start-up process, the fault information cannot be immediately communicated to power plant maintenance personnel.

[0004] Patent application CN104267677A discloses a real-time display method for the sequential control steps and information of a gas turbine. This application displays feedback information for each step of the subgroup sequential control in real time at the operator station, and differentiates the feedback information using three colors (gray, green, and yellow) according to different states. This allows operators to have a comprehensive and clear understanding of the current gas turbine control operation status, and enables timely handling of faults occurring during the unit's sequential startup process. It eliminates the need to notify engineers to check the fault causes through configuration logic on the engineer's station, greatly improving the speed and efficiency of fault handling. However, the problem of not being able to know the interactive control of various systems during startup remains. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method and system for one-button start-up of a gas turbine that is information-visualized and intelligent.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A method for one-button start-up of a gas turbine that features information visualization and intelligence includes the following steps:

[0008] S1. By clicking the start button on the display screen, the gas turbine's sequence process is started sequentially and feedback from each step is received.

[0009] S2. During the gas turbine startup process, it can interact with the unit's analog automatic adjustment and control system, turbine digital electro-hydraulic adjustment system, coordination control system, turbine bypass control system and electrical control system.

[0010] S3. When all process signals and feedback signals are normal, the gas turbine starts normally.

[0011] S4. When one of the step sequence process signals or feedback signals is abnormal, the abnormal signal will be displayed on the screen and an alarm signal will be issued.

[0012] Advantages: This invention can monitor the startup sequence of a gas turbine in real time. If the sequence is not performed correctly, it will promptly issue an alarm, allowing personnel to take timely corrective action. This ensures unit safety and improves power plant efficiency. During startup, it can interact with the MCS (Multi-Signal System), the turbine's digital electro-hydraulic control system, and the CCS (Computer-Controlled System) to exchange information in multiple dimensions. The entire system allows users to view the startup sequence anytime, anywhere via a display screen, providing valuable reference for maintenance personnel.

[0013] Preferably, in step S2, the interaction process with the unit's analog automatic adjustment and control system is as follows:

[0014] S211 The unit's analog automatic adjustment and control system has a PID controller module. The input of the PID controller module receives the set value and the measured value, and outputs the output value to the switching module.

[0015] S212. When the switching module receives the gas turbine one-button start command, the control output of the unit analog automatic adjustment and control system switches to the preset value.

[0016] S213. When the switching module does not receive the one-button start command for the gas turbine, the control output is the calculated output of the PID controller module.

[0017] Preferably, the calculation formula of the PID controller module is as follows:

[0018] e(t) = r(t) - y(t)

[0019]

[0020] In the formula, r(t) is the controller input, y(t) is the system output, e(t) is the control deviation, u(t) is the controller output, and t is time; K p K i K d These are the proportional, integral, and differential coefficients, respectively.

[0021] Preferably, in step S2, the interaction process with the turbine digital electro-hydraulic control system is as follows:

[0022] S221. Determine the current state of the steam turbine and classify it as cold, warm, or hot.

[0023] S222, combined with the turbine start-up permission judgment logic, controls the temperature margin and determines the parameters of start-up, speed, and warm-up;

[0024] S223. Feedback the calculated parameters to the gas turbine one-button start system.

[0025] Preferably, in step S2, the interaction process with the coordination and control system is as follows:

[0026] S231. After receiving the automatic start command for the gas turbine one-button start, the coordinated control system performs the automatic start function.

[0027] S232. After receiving the automatic exit command from the gas turbine one-button start, the coordinated control system performs the automatic exit function.

[0028] S233: The coordinated control system receives the load command for one-button start of the gas turbine and automatically distributes the unit load.

[0029] This invention also discloses an information visualization and intelligent one-button start system for gas turbines, comprising:

[0030] The startup module initiates the gas turbine's sequential process by clicking the startup button on the display screen and receives feedback from each step.

[0031] The interactive module can exchange information with the unit's analog automatic adjustment and control system, turbine digital electro-hydraulic adjustment system, coordination control system, turbine bypass control system, and electrical control system during the gas turbine startup process.

[0032] The judgment module ensures that the gas turbine starts normally when all process signals and feedback signals are normal; if any process signal or feedback signal is abnormal, the display screen will show the abnormal signal and issue an alarm signal.

[0033] Preferably, the interaction module that interacts with the unit's analog automatic adjustment and control system includes:

[0034] The unit's analog automatic adjustment and control system control unit has a PID controller module. The input terminal of the PID controller module receives the set value and the measured value, and outputs the output value to the switching module.

[0035] When the unit analog automatic adjustment and control system selection unit and switching module receive the gas turbine one-key start command, the control output of the unit analog automatic adjustment and control system switches to the preset value; when the switching module does not receive the gas turbine one-key start command, the control output is the calculated output of the PID controller module.

[0036] Preferably, the calculation unit of the PID controller module has:

[0037] e(t) = r(t) - y(t)

[0038]

[0039] In the formula, r(t) is the controller input, y(t) is the system output, e(t) is the control deviation, u(t) is the controller output, and t is time; K p K i K d These are the proportional, integral, and differential coefficients, respectively.

[0040] Preferably, the interaction module that interacts with the digital electro-hydraulic control system of the steam turbine includes:

[0041] The judgment unit of the digital electro-hydraulic control system for steam turbines determines the current state of the steam turbines and classifies them into cold, warm, and hot states.

[0042] The control unit of the steam turbine digital electro-hydraulic regulation system, combined with the steam turbine start-up permission judgment logic, controls the temperature margin and determines the parameters of start-up, speed, and warm-up.

[0043] The feedback unit of the steam turbine digital electro-hydraulic control system feeds back the calculated parameters to the gas turbine one-button start system.

[0044] Preferably, the interaction module that interacts with the coordination and control system includes:

[0045] The automatic activation unit of the coordination and control system performs the automatic activation function after receiving the automatic activation command for one-button start of the gas turbine.

[0046] The coordinated control system automatically exits the unit. After receiving the automatic exit command from the gas turbine's one-button start, the coordinated control system performs the automatic exit function.

[0047] The load distribution unit of the coordinated control system receives the load command for one-button start of the gas turbine and automatically distributes the unit load.

[0048] Compared with existing technologies, the advantages of this invention are: This invention can monitor the start-up sequence of a gas turbine in real time. When the sequence is not performed correctly, it promptly issues an alarm, allowing personnel to take timely corrective action. This ensures unit safety and improves power plant efficiency. Simultaneously, the design of the gas turbine one-button start-up system is optimized for interaction with multiple systems, enabling multi-dimensional information exchange with the MCS full-process control system, the turbine digital electro-hydraulic control system, and the CCS control system during startup. The entire system allows users to query the start-up sequence anytime, anywhere via a display screen, providing valuable reference for maintenance personnel. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the overall framework of Embodiment 1 of the present invention;

[0050] Figure 2 This is a schematic diagram of the execution flow of Embodiment 1 of the present invention;

[0051] Figure 3 This is a schematic diagram of the control flow of the unit analog automatic adjustment and control system according to Embodiment 1 of the present invention;

[0052] Figure 4 This is a schematic diagram of the control flow of the steam turbine digital electro-hydraulic control system according to Embodiment 1 of the present invention;

[0053] Figure 5 This is a schematic diagram of the control flow of the coordination control system according to Embodiment 1 of the present invention;

[0054] Figure 6 This is a schematic diagram of the control flow of the turbine bypass control system according to Embodiment 1 of the present invention. Detailed Implementation

[0055] To facilitate understanding of the technical solution of the present invention by those skilled in the art, the technical solution of the present invention will now be further described in conjunction with the accompanying drawings.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0057] Example 1

[0058] See Figure 1 and Figure 2 This embodiment discloses a one-button start-up method for gas turbines that features information visualization and intelligence, including the following steps:

[0059] S1. By clicking the start button on the display screen, the gas turbine's sequence process is started sequentially and feedback from each step is received.

[0060] S2. During the gas turbine startup process, it can interact with the unit's analog automatic adjustment and control system, turbine digital electro-hydraulic adjustment system, coordination control system, turbine bypass control system and electrical control system.

[0061] S3. When all process signals and feedback signals are normal, the gas turbine starts normally.

[0062] S4. When one of the step sequence process signals or feedback signals is abnormal, the gas turbine fails to start, the abnormal signal is displayed on the screen, and an alarm signal is issued.

[0063] The display screen shows the execution status of each step of the gas turbine process in real time. When the operator clicks the start button on the screen, the first step simultaneously issues seven commands with added logical judgment. When all seven command signals are detected, a switch signal "Step 1 Command Normal" is output, and the "Step 1 Command Normal" indicator on the screen is displayed in green, indicating that feedback has been received. If "Step 1 Command Normal" is not issued within the waiting time, the "Step 1 Command Normal" indicator on the screen is displayed in red. The absence of any of the seven command signals will also be displayed in red, along with an alarm signal. Operators can quickly locate abnormalities based on the signals on the display screen, providing valuable information for maintenance personnel.

[0064] The seven instruction signals for the first step are as follows:

[0065] 1. Close the steam inlet damper, defined as: step sequence 1 instruction 1.

[0066] 2. Reset the automatic stop sequence control instruction, defined as: step sequence 1 instruction 2.

[0067] 3. Automatically open the intake system damper door, defined as: step sequence 1 instruction 3.

[0068] 4. Automatically start the casing fan A and casing fan B, defined as: step sequence 1 instruction 4.

[0069] 5. Issue the instruction to select SFC1 or SFC2, defined as: Step 1 Instruction 5.

[0070] 6. Automatically open the pre-module outlet shut-off valve, defined as: step sequence 1 instruction 6.

[0071] 7. Issue the SFC disk reset signal, defined as: step sequence 1 instruction 7.

[0072] After the first step instruction signal is issued, the system also checks whether feedback signals have been received. There are four feedback signals for the first step. A new logic check is added: when all four feedback signals are received, a switch signal "Step 1 Feedback Normal" is output, and the "Step 1 Feedback Normal" indicator on the display is displayed in green, indicating that feedback has arrived. If "Step 1 Feedback Normal" is not issued within the waiting time, the "Step 1 Feedback Normal" indicator on the display will be displayed in red. The system will also display red and issue an alarm signal if no signal is issued out of the four feedback signals.

[0073] The four feedback signals for the first step are as follows:

[0074] 1. SFC selects one of three modes: blow-dry, wash, or normal mode, defined as: step 1 feedback 1.

[0075] 2. When the rotational speed is less than 6.6 Hz, it is defined as: Step sequence 1 feedback 2.

[0076] 3. The intake system damper door opens, defined as: step sequence 1 feedback 3.

[0077] 4. The operation of the enclosure ventilation fan is defined as: Step 1 Feedback 4.

[0078] After both the "Step 1 Command Normal" and "Step 1 Feedback Normal" signals are "TRUE", the system will issue five commands for the second step. An additional logical judgment is added: when all five command signals for the second step are detected, a switch signal "Step 2 Command Normal" is output, and the "Step 2 Command Normal" indicator on the display is shown in green, indicating that feedback has arrived. If "Step 2 Command Normal" is not issued within the waiting time, the "Step 2 Command Normal" indicator on the display will be shown in red. The absence of any of the five command signals will also be displayed in red, and an alarm signal will be issued.

[0079] The five instruction signals for the second step are as follows:

[0080] 1. Reset automatic stop sequence control, defined as: step sequence 2 instruction 1.

[0081] 2. Issue the RDS automatic stop sequence control command, defined as: step sequence 2 command 2.

[0082] 3. Issue the lubricating oil start sequence control command, defined as: step sequence 2 command 3.

[0083] 4. Issue the command to start the hydraulic oil pump, defined as: step sequence 2 command 4.

[0084] 5. Activate RDS automatic mode, defined as: step sequence 2 instruction 5.

[0085] After the instruction signal for the second step is issued, the system also checks whether feedback signals have been received. There are two feedback signals for the second step. A new logic check is added: when both feedback signals are detected, a switch signal "Step 2 Feedback Normal" is output, and the display shows "Step 2 Feedback Normal" in green, indicating that feedback has arrived. If "Step 2 Feedback Normal" is not issued within the waiting time, the display shows "Step 2 Feedback Normal" in red. The absence of either of the two feedback signals will also display in red on the display, and an alarm signal will be issued.

[0086] The two feedback signals in the second step are as follows:

[0087] 1. IGV fully off, defined as: step sequence 2 feedback 1.

[0088] 2. The lubricating oil start-up sequence control command has been issued, defined as: step sequence 2 feedback 2.

[0089] The judgment process for the remaining steps three through fourteen in this embodiment is similar to that described above. Step fourteen is generator grid connection, which ends the startup sequence, and will not be described in detail here. The specific startup sequence is shown in Table 1.

[0090] Table 1

[0091]

[0092]

[0093] When performing one-button start-up of the gas turbine, it is also necessary to be able to interact with the unit's analog automatic control system, turbine digital electro-hydraulic control system, coordination control system, turbine bypass control system, and electrical control system. Achieving seamless integration between the gas turbine's one-button start-up and other control systems is also crucial to its success. In specific implementation, each control system is designed with the following functions.

[0094] (I) Unit Analog Automatic Control System (MCS Control System)

[0095] See Figure 3 The interface technology between the gas turbine one-button start system and the MCS (Mechanical Control System) is crucial to the success of one-button start. To achieve one-button start, the MCS must be redesigned and optimized, adding an interface between the gas turbine one-button start system and the MCS. When the gas turbine one-button start sequence reaches the MCS loop of the subsystem, it automatically switches to the preset value. Simultaneously, it achieves stable regulation throughout the entire process, seamlessly integrating with one-button start to jointly complete the unit's start-up and shutdown. To achieve the interface with one-button start, regardless of whether the unit is running or shut down, all MCS regulation systems must be in automatic mode, waiting for the process system to meet the regulation requirements before the automatic system performs PID calculations; otherwise, it remains in preset tracking mode.

[0096] The control in the MCS control system uses a PID controller module, and the general form of the PID controller module can be expressed as:

[0097] e(t) = r(t) - y(t)

[0098]

[0099] In the formula, r(t) is the controller input, y(t) is the system output, e(t) is the control deviation, and u(t) is the controller output; K p K i K d These are the proportional, integral, and differential coefficients, respectively.

[0100] When the gas turbine one-button start command is sent to the switching module, the MCS control system switches its control output to a preset value, ensuring seamless integration with the one-button start to jointly complete the unit's start-up and shutdown. Otherwise, the control output is the calculated output of the PID controller module.

[0101] Based on the parameters and curves provided by the main equipment manufacturer and past experience curves and parameters for each startup method, the setpoint of the simulation adjustment system is automatically given and adjusted automatically.

[0102] There are three ways to intervene in the MCS system with one-button start of the gas turbine:

[0103] (1) Setpoint change. The gas turbine one-button start changes the setpoint of the MCS control system loop. Different setpoints for different stages are automatically generated according to system requirements.

[0104] (2) Output overslack value. If the gas turbine fails to start during the one-button start-up process, the MCS control system directly outputs a protective overslack value that is safe for the current operating condition.

[0105] (3) The switching of the adjustment loop is achieved through the logic loop configuration to ensure that the switching of different loops is uninterrupted.

[0106] (II) Steam Turbine Digital Electro-hydraulic Control System

[0107] See Figure 4 The digital electro-hydraulic control system for steam turbines adjusts the amount of steam entering the turbine by controlling the opening of various high-pressure, intermediate-pressure control valves and make-up steam valves, thereby regulating the turbine speed, load, or pressure before the main steam valve. It mainly consists of the following three circuits:

[0108] (1) TAB circuit

[0109] TAB stands for Turbine Start-up and Lift Limiter. This circuit mainly acts as an upper limit in closed-loop control, and it is no longer limited after grid connection.

[0110] (2) Speed-load circuit

[0111] Before grid connection, the system operates on a speed circuit, adjusting for speed deviation. The load circuit sets the load to 0, at which point the actual generator load is also 0, and the load circuit deviation is 0, rendering it ineffective. After grid connection, the system adjusts the load to ensure stable unit load.

[0112] (3) Pressure circuit

[0113] The pressure circuit is responsible for maintaining pressure stability. When the turbine is operating in initial pressure mode, the pressure controller comes into play.

[0114] Therefore, this system has the following functions:

[0115] (1) It can determine the current state of the steam turbine and classify it into cold state, warm state and hot state.

[0116] (2) Implement a complete set of steam turbine start-up permission judgment logic.

[0117] (3) Stress calculations can be performed based on the current state of the steam turbine, temperature margin can be controlled, start-up parameters, speed and warm-up can be determined, and the calculation results can be sent to the gas turbine one-button start system.

[0118] (4) To achieve automatic turbine startup, the turbine can automatically select the startup rate and warm-up time according to the turbine startup status.

[0119] (5) Realize the automatic one-click grid connection function of steam turbine generator.

[0120] (6) To enable the turbine to automatically increase load after grid connection, during the load increase process, it is necessary to coordinate the load increase of the gas turbine according to the pressure in front of the turbine.

[0121] (7) Automatic activation of the steam replenishment valve.

[0122] (III) Coordination and Control System

[0123] See Figure 5 After the load setpoint is processed through upper and lower load limits, it must then be processed by the load rate stage. The load rate is manually set by the operator based on the unit power. When the output of the load setting station tracks the actual load, the load increase / decrease limits no longer apply, ensuring that the tracking function is fully realized. This gives the system the following functions:

[0124] (1) Implement the logic for determining whether input is allowed.

[0125] (2) Automatically engage and disengage from the gas turbine one-button start system.

[0126] (3) The unit load is automatically distributed according to the load command of AGC and gas turbine one-button start system.

[0127] (iv) Steam Turbine Bypass Control System

[0128] During normal load operation, the bypass control valve enters "standby" mode. This signal is a switching signal sent by the gas turbine control system. At this time, the bypass pressure setpoint is output by a function corresponding to the current actual bypass pressure. The bypass pressure setpoint is always greater than the actual bypass pressure, ensuring that the bypass control valve remains fully closed during load operation. During shutdown and load reduction, the bypass control valve exits "standby" mode, and the bypass pressure setpoint is output by a function corresponding to the gas turbine load.

[0129] See Figure 6 The final command output of the bypass control valve is the greater of the output from the PID controller's manual input and the output from the "minimum valve position" switching module. When the system enters the "minimum valve position" mode, the module output is 5%, and vice versa. The switching rate is 0.05% / s in the upward direction and 2.5% / s in the downward direction. The "minimum valve position" mode is defined as follows: when the bypass pressure is increased by 0.1 MPa and exceeds the pressure setpoint, the system enters the "minimum valve position" mode; otherwise, it exits the "minimum valve position" mode.

[0130] This system has the following functions:

[0131] (1) Optimize the bypass regulation characteristics so that the bypass regulating valve can achieve constant pressure control.

[0132] (2) Implement two sets of startup logics: cold start and warm start.

[0133] (3) To realize the function of quick opening and quick closing protection.

[0134] (4) After the turbine is connected to the grid, in the bypass regulating valve pressure control mode, the valve closing rate should be appropriately increased to ensure the stability of the pressure in front of the turbine.

[0135] (5) After the turbine is connected to the grid and the bypass regulating valve is fully closed, it automatically switches to pressure tracking mode.

[0136] (6) The bypass cooling water meets the requirements for quick bypass opening.

[0137] (V) Electrical Control System

[0138] This system has the following functions:

[0139] (1) The excitation transformer switches of gas turbines No. 1 and No. 2 are automatically closed.

[0140] (2) Implement the self-test module to check whether the mechanical electrical equipment meets the start-up conditions.

[0141] (3) After the gas turbine grid connection command is issued by the gas turbine one-button start system, the gas turbine generator outlet circuit breaker realizes the automatic opening and closing function.

[0142] (4) The steam turbine generator PSS realizes automatic activation and deactivation functions.

[0143] (5) Realize the automatic excitation function of the generator excitation system of the steam turbine unit.

[0144] (vi) Sequential Control System

[0145] The interface between the sequential control system and the gas turbine one-button start system primarily receives start and stop commands from the gas turbine one-button start system, and feeds back the completion conditions and start-up permitting conditions of the functional groups to the gas turbine one-button start system, which then manages the functional groups. The proper division and correct arrangement of the steps of the sequential control system's functional groups, the accurate definition of the start-up permitting conditions, step completion conditions, and the final completion conditions of the functional groups are crucial foundations for the deployment of the gas turbine one-button start system. Based on the overall start-up and shutdown requirements of the gas turbine one-button start system, the sequential control system's functional groups need adjustment, and the steps need optimization. The completion conditions of each functional group and each step must accurately reflect the operational and disconnected status of the equipment, system, or subsystem.

[0146] This embodiment of the gas turbine one-button start-up method can monitor the start-up sequence in real time. If the sequence is not performed correctly, an alarm is issued promptly, allowing personnel to take timely corrective action. This ensures unit safety and improves power plant efficiency. Simultaneously, the gas turbine one-button start-up system is designed with multi-system interaction optimization, enabling multi-dimensional information exchange with the MCS full-process control system, the turbine digital electro-hydraulic control system, and the CCS control system during startup. The start-up sequence can be viewed anytime, anywhere via a display screen, providing valuable reference for maintenance personnel.

[0147] Example 2

[0148] This embodiment discloses an information-visualized gas turbine start-up system, including:

[0149] The startup module initiates the gas turbine's sequential process by clicking the startup button on the display screen and receives feedback from each step.

[0150] The interactive module can exchange information with the unit's analog automatic adjustment and control system, turbine digital electro-hydraulic adjustment system, coordination control system, turbine bypass control system, and electrical control system during the gas turbine startup process.

[0151] The judgment module determines that the gas turbine starts normally when all process signals and feedback signals are normal; if any process signal or feedback signal is abnormal, the gas turbine fails to start, displays the abnormal signal on the screen, and issues an alarm signal.

[0152] The interactive module that interacts with the unit's analog automatic adjustment and control system includes:

[0153] The unit's analog automatic adjustment and control system control unit has a PID controller module. The input terminal of the PID controller module receives the set value and the measured value, and outputs the output value to the switching module.

[0154] When the unit analog automatic adjustment and control system selection unit and switching module receive the gas turbine one-key start command, the control output of the unit analog automatic adjustment and control system switches to the preset value; when the switching module does not receive the gas turbine one-key start command, the control output is the calculated output of the PID controller module.

[0155] The calculation unit of the PID controller module has:

[0156] e(t) = r(t) - y(t)

[0157]

[0158] In the formula, r(t) is the controller input, y(t) is the system output, e(t) is the control deviation, u(t) is the controller output, and t is time; K p K i K d These are the proportional, integral, and differential coefficients, respectively.

[0159] The interactive module that interacts with the digital electro-hydraulic control system of the steam turbine includes:

[0160] The judgment unit of the digital electro-hydraulic control system for steam turbines determines the current state of the steam turbines and classifies them into cold, warm, and hot states.

[0161] The control unit of the steam turbine digital electro-hydraulic regulation system, combined with the steam turbine start-up permission judgment logic, controls the temperature margin and determines the parameters of start-up, speed, and warm-up.

[0162] The feedback unit of the steam turbine digital electro-hydraulic control system feeds back the calculated parameters to the gas turbine one-button start system.

[0163] The interaction module that interacts with the coordinated control system includes:

[0164] The automatic activation unit of the coordination and control system performs the automatic activation function after receiving the automatic activation command for one-button start of the gas turbine.

[0165] The coordinated control system automatically exits the unit. After receiving the automatic exit command from the gas turbine's one-button start, the coordinated control system performs the automatic exit function.

[0166] The load distribution unit of the coordinated control system receives the load command for one-button start of the gas turbine and automatically distributes the unit load.

[0167] The interaction module that interacts with the turbine bypass control system includes:

[0168] The turbine bypass control system selection unit selects the greater of the manual output of the PID controller and the output of the "minimum valve position" switching module for the final command output of the bypass valve. When the system enters the "minimum valve position" mode, the selection module output is 5%, and vice versa. The switching rate is 0.05% / s in the upward direction and 2.5% / s in the downward direction. The "minimum valve position" mode is defined as follows: when the bypass pressure is increased by 0.1 MPa and exceeds the pressure setpoint, the system enters the "minimum valve position" mode; otherwise, it exits the "minimum valve position" mode.

[0169] The interaction module that interacts with the automotive electrical control system includes:

[0170] The self-test unit is activated to check whether the mechanical electrical equipment meets the startup conditions.

[0171] The automatic opening and closing unit is used to enable the gas turbine generator outlet circuit breaker to automatically open and close after the gas turbine grid connection command is issued in the one-button start system.

[0172] The automatic activation / deactivation unit is used to realize the automatic activation / deactivation function of the steam turbine generator PSS.

[0173] The automatic excitation unit is used to realize the automatic excitation function of the turbine generator excitation system.

[0174] The interaction module that interacts with the sequential control system includes:

[0175] The sequential control system functional group unit receives start-up and shutdown commands from the gas turbine one-button start system, and feeds back the completion conditions and start-up permitting conditions of the functional group to the gas turbine one-button start system, which then manages the functional group. The proper division and correct arrangement of the steps within the sequential control system functional groups, the accurate definition of the start-up permitting conditions, step completion conditions, and the final completion conditions of the functional groups are crucial foundations for the deployment of the gas turbine one-button start system. Based on the overall start-up and shutdown requirements of the gas turbine one-button start system, the sequential control system functional groups need adjustment, and the steps need optimization. The completion conditions of each functional group and each step must accurately reflect the operational and disconnected status of the equipment, system, or subsystem.

[0176] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0177] The above embodiments are merely examples of implementation methods of the invention. The scope of protection of the present invention is not limited to the above embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A method for one-button start-up of a gas turbine with information visualization and intelligence, characterized in that: Includes the following steps: S1. By clicking the start button on the display screen, the gas turbine's sequence process is started sequentially and feedback is received for each step. S2. During the gas turbine startup process, it can interact with the unit's analog automatic adjustment and control system, turbine digital electro-hydraulic adjustment system, coordination control system, turbine bypass control system and electrical control system. In step S2, the interaction process with the unit's analog automatic adjustment and control system is as follows: S211 The unit's analog automatic adjustment and control system has a PID controller module. The input of the PID controller module receives the set value and the measured value, and outputs the output value to the switching module. S212. When the switching module receives the gas turbine one-button start command, the control output of the unit analog automatic adjustment and control system switches to the preset value. S213. When the switching module does not receive the gas turbine one-button start command, the control output is the calculated output of the PID controller module. S3. When all process signals and feedback signals are normal, the gas turbine starts normally. S4. When one of the step sequence process signals or feedback signals is abnormal, the gas turbine fails to start, the abnormal signal is displayed on the screen, and an alarm signal is issued.

2. The information visualization and intelligent one-button start method for gas turbines according to claim 1, characterized in that: The calculation formula of the PID controller module is as follows: In the formula, r(t) is the controller input, y(t) is the system output, e(t) is the control deviation, u(t) is the controller output, and t is time; K p K i K d These are the proportional, integral, and differential coefficients, respectively.

3. The information visualization and intelligent one-button start method for gas turbines according to claim 1, characterized in that: In step S2, the interaction process with the turbine digital electro-hydraulic control system is as follows: S221. Determine the current state of the steam turbine and classify it as cold state, warm state, or hot state; S222, combined with the turbine start-up permission judgment logic, controls the temperature margin and determines the parameters of start-up, speed, and warm-up; S223. Feedback the calculated parameters to the gas turbine one-button start system.

4. The information visualization and intelligent one-button start method for gas turbines according to claim 1, characterized in that: In step S2, the interaction process with the coordination and control system is as follows: S231. After receiving the automatic start command for the gas turbine one-button start, the coordinated control system performs the automatic start function. S232. After receiving the automatic exit command from the gas turbine one-button start, the coordinated control system performs the automatic exit function. S233: The coordinated control system receives the load command for one-button start of the gas turbine and automatically distributes the unit load.

5. A one-button start system for gas turbines with information visualization and intelligence, characterized in that: include: The startup module initiates the gas turbine's sequential process by clicking the startup button on the display screen and receives feedback from each step. The interactive module can exchange information with the unit's analog automatic adjustment and control system, turbine digital electro-hydraulic adjustment system, coordination control system, turbine bypass control system, and electrical control system during the gas turbine startup process. The interactive module that interacts with the unit's analog automatic adjustment and control system includes: The unit's analog automatic adjustment and control system control unit has a PID controller module. The input terminal of the PID controller module receives the set value and the measured value, and outputs the output value to the switching module. When the unit analog automatic adjustment and control system selection unit and switching module receive the gas turbine one-key start command, the control output of the unit analog automatic adjustment and control system switches to the preset value; when the switching module does not receive the gas turbine one-key start command, the control output is the calculated output of the PID controller module. The judgment module determines that the gas turbine starts normally when all process signals and feedback signals are normal; if any process signal or feedback signal is abnormal, the gas turbine fails to start, displays the abnormal signal on the screen, and issues an alarm signal.

6. The information visualization and intelligent one-button start system for gas turbines according to claim 5, characterized in that: The calculation unit of the PID controller module has: In the formula, r(t) is the controller input, y(t) is the system output, e(t) is the control deviation, u(t) is the controller output, and t is time; K p K i K d These are the proportional, integral, and differential coefficients, respectively.

7. The information visualization and intelligent one-button start system for gas turbines according to claim 5, characterized in that: The interactive module that interacts with the digital electro-hydraulic control system of the steam turbine includes: The judgment unit of the digital electro-hydraulic control system for steam turbines determines the current state of the steam turbines and classifies them into cold, warm, and hot states. The control unit of the steam turbine digital electro-hydraulic regulation system, combined with the steam turbine start-up permission judgment logic, controls the temperature margin and determines the parameters of start-up, speed, and warm-up. The feedback unit of the steam turbine digital electro-hydraulic control system feeds back the calculated parameters to the gas turbine one-button start system.

8. The information visualization and intelligent one-button start system for gas turbines according to claim 5, characterized in that: The interaction module that interacts with the coordinated control system includes: The automatic activation unit of the coordination and control system performs the automatic activation function after receiving the automatic activation command for one-button start of the gas turbine. The coordinated control system automatically exits the unit. After receiving the automatic exit command from the gas turbine's one-button start, the coordinated control system performs the automatic exit function. The load distribution unit of the coordinated control system receives the load command for one-button start of the gas turbine and automatically distributes the unit load.

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