Gas turbine exhaust temperature protection control method and system based on GE9F gas turbine

Abstract

The present application relates to a gas turbine exhaust temperature protection control method based on a GE9F gas turbine, including: obtaining a MARK VIE logic for controlling the gas turbine and a server for calling the MARK VIE logic, a control panel for controlling exhaust temperature thermocouple failures is provided on the server, and a cut average value control logic for controlling each exhaust temperature thermocouple failure is provided under the MARK VIE logic; when any exhaust temperature thermocouple in the logic project of the MARKVIE logic fails, the corresponding control logic in the cut average value control logic is directly called; when an exhaust thermocouple failure occurs during the operation of the unit, and a cut average value control instruction issued by the control panel is received at the same time, the cut average value control logic is called according to the cut average value control instruction. Compared with the prior art, the present invention can effectively avoid the unit's false tripping accident when the exhaust temperature thermocouple fails, and protect the unit's safe operation.

Description

Technical Field

[0001] The present application relates to the technical field of gas turbine exhaust control, and in particular to a gas turbine exhaust temperature protection control method, device and storage medium based on a GE9F gas turbine. Background Art

[0002] The GE9F gas turbine exhaust temperature thermocouple is installed at the end of the gas turbine exhaust. The ring structure measures the gas turbine exhaust temperature. There are 31 exhaust temperature thermocouples. MARK VIE logic inputs the field signal through the PTCC terminal board and the temperature control feedback module to determine the quality of the 31 exhaust temperature thermocouple input field signals. The temperature expansion monitoring module determines the combustion status of the combustion system through the exhaust temperature measurement value.

[0003] Among them, when the unit is running, if the exhaust temperature thermocouple dispersion fails, due to the high temperature of the exhaust diffusion section, it cannot be checked and handled in time. When the adjacent components of the exhaust temperature thermocouple fail, the temperature is the first or second highest, or the temperature is the first or second lowest, the MARK VIE protection logic triggers the high dispersion alarm, causing the unit to automatically shut down, quickly reduce load or trip. However, the existing GE control logic cannot solve the malfunction problem caused by the exhaust thermocouple failure.

[0004] Therefore, there is an urgent need to provide a gas turbine exhaust temperature protection control strategy based on the GE9F gas turbine, which can effectively avoid unit malfunction tripping accidents and protect the safe operation of the unit when the exhaust temperature thermocouple fails. Summary of the invention

[0005] Based on this, it is necessary to provide a gas turbine exhaust temperature protection control method and system based on the GE9F gas turbine, which can effectively avoid unit false tripping accidents and protect the safe operation of the unit when the exhaust temperature thermocouple fails, in response to the above technical problems.

[0006] An embodiment of the present invention provides a method for protecting and controlling exhaust temperature of a gas turbine based on a GE9F gas turbine, wherein the unit of the GE9F gas turbine includes a first number of exhaust temperature thermocouples, and the method includes the following steps:

[0007] Obtaining the MARK VIE logic for controlling the gas engine and the server for calling the MARK VIE logic; wherein the server is provided with a control panel for controlling exhaust temperature thermocouple failures; under the logic item of the MARK VIE logic, a tangent average value control logic for controlling each exhaust temperature thermocouple failure is provided;

[0008] When any exhaust temperature thermocouple in the logic items of the MARK VIE logic fails, the control logic for controlling the corresponding exhaust temperature thermocouple in the mean value control logic is directly called;

[0009] When an exhaust thermocouple failure occurs during the operation of the unit and a cut-mean-value control instruction is received from the control panel, the cut-mean-value control logic is called according to the cut-mean-value control instruction.

[0010] Furthermore, the method further comprises:

[0011] When the fault of the exhaust temperature thermocouple is cleared, the tangent mean value control logic corresponding to the exhaust temperature thermocouple whose fault is cleared is reset.

[0012] Further, under the logic item of the MARK VIE logic, the step of setting the mean value control logic for controlling each exhaust temperature thermocouple fault includes:

[0013] Create an exhaust thermocouple project under the logic project of the MARK VIE logic, and create a new added point under the exhaust thermocouple project; wherein the new added point is a point required to be referenced when the exhaust temperature thermocouple average value control logic is used;

[0014] Under the task item of the MARK VIE logic, a logic block corresponding to each of the newly added points is created, and each logic block is connected according to the corresponding logic to obtain the tangent average value control logic.

[0015] Furthermore, the newly added points include a control signal acquisition point, a measurement signal acquisition point, a reset point, a trigger point and a cut-off average value point.

[0016] Furthermore, under the task item of the MARK VIE logic, the steps of creating a logic block corresponding to each of the newly added points and connecting each logic block according to the corresponding logic to obtain the tangent average value control logic include:

[0017] According to the control signal acquisition point, measurement signal acquisition point, reset point, trigger point and average value point in the newly added points, a control signal acquisition logic block, a measurement signal acquisition logic block, a reset switching logic block, a signal trigger logic block and an average value logic block of each exhaust temperature thermocouple are correspondingly created;

[0018] Connecting the output ends of the control signal acquisition logic block, the measurement signal acquisition logic block and the reset switching logic block to the input end of the signal trigger logic block, and connecting the output end of the signal trigger logic block to the cut average value logic block to obtain the cut average value control logic;

[0019] Among them, the control signal acquisition logic block and the measurement signal acquisition logic block transmit the trigger signal of the exhaust temperature thermocouple fault to the cut average value logic block through the signal trigger logic block, so that the cut average value logic block executes the cut average value control logic for controlling each exhaust temperature thermocouple fault; the reset switching logic block transmits the reset signal to the cut average value logic block through the signal trigger logic block to reset the cut average value logic block.

[0020] Another embodiment of the present invention provides a gas turbine exhaust temperature protection control system based on a GE9F gas turbine, wherein the unit of the GE9F gas turbine includes a first number of exhaust temperature thermocouples, and the system includes:

[0021] The MARK VIE logic block is used to directly call the control logic of the mean value control logic to control the corresponding exhaust temperature thermocouple when any exhaust temperature thermocouple in the logic project of the MARK VIE logic fails; wherein, under the logic project of the MARK VIE logic, there is a mean value control logic for controlling each exhaust temperature thermocouple failure,

[0022] The server is used for calling the cut average value control logic according to the cut average value control instruction when an exhaust thermocouple fault occurs during the operation of the unit and a cut average value control instruction is received through the control panel; wherein the server is provided with a control panel for controlling the exhaust temperature thermocouple fault.

[0023] Furthermore, the server is also used to reset the tangent mean value control logic of the exhaust temperature thermocouple after the fault of the exhaust temperature thermocouple is rectified.

[0024] Furthermore, the MARK VIE logic block includes:

[0025] A project addition module is used to create an exhaust thermocouple project under the logic project of the MARK VIE logic, and to create a new addition point under the exhaust thermocouple project; wherein the new addition point is a point required to be referenced when the exhaust temperature thermocouple cut average value control logic is used;

[0026] The logic creation module is used to create a logic block corresponding to each of the newly added points under the task project of the MARK VIE logic, and connect each logic block according to the corresponding logic to obtain the tangent average value control logic.

[0027] Furthermore, the newly added points include a control signal acquisition point, a measurement signal acquisition point, a reset point, a trigger point and a cut-off average value point.

[0028] Furthermore, the logic creation module is specifically used to:

[0029] According to the control signal acquisition point, measurement signal acquisition point, reset point, trigger point and average value point in the newly added points, a control signal acquisition logic block, a measurement signal acquisition logic block, a reset switching logic block, a signal trigger logic block and an average value logic block of each exhaust temperature thermocouple are correspondingly created;

[0030] Connecting the output ends of the control signal acquisition logic block, the measurement signal acquisition logic block and the reset switching logic block to the input end of the signal trigger logic block, and connecting the output end of the signal trigger logic block to the cut average value logic block to obtain the cut average value control logic;

[0031] Among them, the control signal acquisition logic block and the measurement signal acquisition logic block transmit the trigger signal of the exhaust temperature thermocouple fault to the cut average value logic block through the signal trigger logic block, so that the cut average value logic block executes the cut average value control logic for controlling each exhaust temperature thermocouple fault; the reset switching logic block transmits the reset signal to the cut average value logic block through the signal trigger logic block to reset the cut average value logic block.

[0032] Another embodiment of the present invention further proposes a computer-readable storage medium, which includes a stored computer program; wherein, when the computer program is running, it controls the device where the computer-readable storage medium is located to execute the above-mentioned gas turbine exhaust temperature protection control method based on the GE9F gas turbine.

[0033] Another embodiment of the present invention also proposes a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the above-mentioned gas turbine exhaust temperature protection control method based on the GE9F gas turbine when executing the computer program.

[0034] The above-mentioned gas turbine exhaust temperature protection control method based on the GE9F gas turbine obtains the MARKVIE logic for controlling the gas turbine and the server that calls the MARK VIE logic; wherein, the server is provided with a control panel for controlling the exhaust temperature thermocouple failure; under the logic project of the MARK VIE logic, there is a cut average value control logic for controlling each exhaust temperature thermocouple failure; when any exhaust temperature thermocouple in the logic project of the MARK VIE logic fails, the control logic for controlling the corresponding exhaust temperature thermocouple in the cut average value control logic is directly called; when an exhaust thermocouple failure occurs during the operation of the unit, and a cut average value control instruction issued by the control panel is received at the same time, the cut average value control logic is called according to the cut average value control instruction. Compared with the prior art, the present invention can effectively avoid the unit's false tripping accident when the exhaust temperature thermocouple fails, protect the unit's safe operation, and meet the actual application needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A flow chart of a method for protecting and controlling the exhaust temperature of a gas turbine based on a GE9F gas turbine provided in an embodiment of the present invention;

[0036] Figure 2 for Figure 1 Specific flow diagram of step S11;

[0037] Figure 3 This is a schematic diagram of the control logic for the #1 exhaust temperature thermocouple failure and average value cutting;

[0038] Figure 4 This is a schematic diagram of the control logic for the #2 exhaust temperature thermocouple failure cutting average value;

[0039] Figure 5 This is a schematic diagram of the control logic for the #31 exhaust temperature thermocouple failure cut average value;

[0040] Figure 6 A structural block diagram of a gas turbine exhaust temperature protection control system based on a GE9F gas turbine provided in an embodiment of the present invention;

[0041] Figure 7 This is a structural diagram of the MARK VIE logic block. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that the step numbers in the text are only for the convenience of explaining the specific embodiment and do not limit the order of execution of the steps. The method provided in this embodiment can be executed by a related server, and the following description will be given by taking the server as the execution subject as an example.

[0044] like Figure 1 As shown, the embodiment of the present invention provides a gas turbine exhaust temperature protection control method based on a GE9F gas turbine, wherein the unit of the GE9F gas turbine includes a first number (31) of exhaust temperature thermocouples, and the method includes steps S11 to S14:

[0045] Step S11, obtaining the MARK VIE logic for controlling the gas engine and the server for calling the MARK VIE logic; wherein the server is provided with a control panel for controlling exhaust temperature thermocouple failures; under the logic item of the MARK VIE logic, a tangent average value control logic for controlling each exhaust temperature thermocouple failure is provided;

[0046] Step S12, when any exhaust temperature thermocouple in the logic items of the MARK VIE logic fails, directly calling the control logic for controlling the corresponding exhaust temperature thermocouple in the mean value control logic;

[0047] Step S13, when an exhaust thermocouple fault occurs during the operation of the unit and a cut average value control instruction is received from the control panel, the cut average value control logic is called according to the cut average value control instruction;

[0048] Step S14, when the fault of the exhaust temperature thermocouple is cleared, resetting the tangent mean value control logic corresponding to the exhaust temperature thermocouple that has cleared the fault.

[0049] It should be noted that the MARK VIE logic runs on the gas engine exhaust protection device that protects the gas engine exhaust temperature, and the gas engine exhaust protection device can communicate with the server that calls the MARK VIE logic. The MARK VIE logic is loaded during the startup of the gas engine exhaust protection device. When the gas engine exhaust protection device is started, the MARK VIE logic is loaded and started, and the gas engine exhaust protection device that executes the MARK VIE logic establishes a communication connection with the server. Among them, the gas engine exhaust protection device that executes the MARK VIE logic receives the exhaust temperature thermocouple signals emitted by 31 exhaust temperature thermocouples through the PTCC terminal board.

[0050] It can be understood that 31 exhaust temperature thermocouples send exhaust temperature thermocouple signals to the gas turbine exhaust protection device that executes the MARK VIE logic in real time through the PTCC terminal board. The MARK VIE logic will receive the exhaust temperature thermocouple signals and compare them with the cut average value control logic that controls the failure of each exhaust temperature thermocouple in its logic project. When any exhaust temperature thermocouple fails, the control logic that controls the corresponding exhaust temperature thermocouple in the cut average value control logic is called to execute the cut average value control logic for the corresponding exhaust temperature thermocouple. Among them, the cut average value control logic switches the parameter value of the faulty exhaust temperature thermocouple involved in the unit operation processing and control to the average value, avoiding the unit tripping accident caused by the exhaust temperature thermocouple failure. The average value is calculated by adding the sum of all healthy exhaust temperature thermocouple working parameter values ​​divided by the number of all healthy exhaust temperature thermocouples.

[0051] When an exhaust thermocouple failure occurs during the operation of the unit and a cut-to-average value control instruction is received through the control panel of the server, the cut-to-average value control logic is called according to the cut-to-average value control instruction. When the fault of the exhaust temperature thermocouple is relieved, the cut-to-average value control logic corresponding to the exhausted temperature thermocouple that has been relieved of the fault is reset to effectively avoid false tripping accidents of the unit caused by the exhaust temperature thermocouple failure.

[0052] In the present embodiment, first, when any exhaust temperature thermocouple in the logic item of the MARK VIE logic fails, the control logic for controlling the corresponding exhaust temperature thermocouple in the cut average value control logic is directly called; when an exhaust thermocouple failure occurs during the operation of the unit and a cut average value control instruction is received through the control panel, the cut average value control logic is called according to the cut average value control instruction; when the fault of the faulty exhaust temperature thermocouple is relieved, the cut average value control logic corresponding to the relieved exhaust temperature thermocouple is reset, thereby effectively avoiding the unit tripping accident caused by the current exhaust temperature thermocouple failure, and at the same time, the cut average value control logic can be reset after the exhaust temperature thermocouple failure is relieved, thereby meeting the actual application needs.

[0053] like Figure 2 As shown, in a preferred embodiment, in step S11, under the logic item of the MARK VIE logic, the step of setting the mean value control logic for controlling each exhaust temperature thermocouple fault includes:

[0054] Step S111, create an exhaust thermocouple project under the logic project of the MARK VIE logic, and create a new added point under the exhaust thermocouple project; wherein the new added point is the point required to be referenced when the exhaust temperature thermocouple cut-off average value control logic is used, and the new added point includes a control signal acquisition point, a measurement signal acquisition point, a reset point, a trigger point and a cut-off average value point.

[0055] Step S112, under the task item of the MARK VIE logic, creating a logic block corresponding to each of the newly added points, and connecting each logic block according to the corresponding logic to obtain the tangent average value control logic.

[0056] Specifically, an exhaust thermocouple project EX (Exhaust Thermocouple) is created under the CUSTOM logic project of the MARK VIE logic, and under the exhaust thermocouple project, control signal acquisition point l43ttxdx_pb, measurement signal acquisition point ttxdt_x, reset point L43ttxd_Reset, trigger point lttxdx_ALM and average value point TTXM corresponding to 31 exhaust temperature thermocouples are created.

[0057] The value access type of the reset point L43ttxd_Reset is Read / Write, and the point type is BOOL. The reset point L43ttxd_Reset can be referenced to the control panel of the server, and can reset all the faulty exhaust temperature thermocouples with mean values ​​to normal values ​​after the faulty exhaust temperature thermocouples are processed normally.

[0058] The measurement signal acquisition point ttxdt_x is connected to the output end of the exhaust temperature thermocouple to obtain the exhaust temperature thermocouple signal of the corresponding exhaust temperature thermocouple, such as ttxdt_1 to obtain the exhaust temperature thermocouple signal numbered #1, ttxdt_2 to obtain the exhaust temperature thermocouple signal numbered #2... ttxdt_31 to obtain the exhaust temperature thermocouple signal numbered #31, and the value access type of the measurement signal acquisition point ttxdt_x is Read Only and the point type is REAL. The measurement signal acquisition point ttxdt_x can obtain the current exhaust temperature thermocouple field measurement signal, feed it back to the control panel of the server, and give the MARK VIE logic to judge whether the component is good or bad.

[0059] The control signal acquisition point l43ttxdx_pb is connected to the output end of the exhaust temperature thermocouple to obtain the exhaust temperature thermocouple signal of the corresponding exhaust temperature thermocouple, such as l43ttxd_pb is used to obtain the exhaust temperature thermocouple signal numbered #1, l43ttxd2_pb is used to obtain the exhaust temperature thermocouple signal numbered #2...l43ttxd31_pb is used to obtain the exhaust temperature thermocouple signal numbered #31, the value access type of the control signal acquisition point l43ttxdx_pb is Read / Write, the point type is BOOL, and the control signal acquisition point l43ttxdx_pb can be referenced to the control panel of the server.

[0060] The trigger point lttxdx_ALM is used to simultaneously obtain the trigger signals sent by the control signal acquisition point l43ttxdx_pb and the measurement signal acquisition point ttxdt_x of the current exhaust temperature thermocouple, such as ttxdt_1 for obtaining the exhaust temperature thermocouple trigger signal numbered #1, ttxdt_2 for obtaining the exhaust temperature thermocouple trigger signal numbered #2... ttxdt_31 for obtaining the exhaust temperature thermocouple trigger signal numbered #31. The value access type of the trigger point lttxdx_ALM is Read Only, the point type is REAL, and the trigger point lttxdx_ALM can alarm the current exhaust temperature thermocouple when receiving the trigger signal sent by the control signal acquisition point l43ttxdx_pb and / or the measurement signal acquisition point ttxdt_x, and send the trigger signal to the cut average value point TTXM, so that the cut average value point TTXM calls the cut average value control logic and switches the parameter value of the currently faulty exhaust temperature thermocouple to the average value to participate in the unit control.

[0061] Furthermore, according to the control signal acquisition point l43ttxdx_pb, measurement signal acquisition point ttxdt_x, reset point L43ttxd_Rese, trigger point lttxdx_ALM and cut average value point TTXM of each exhaust temperature thermocouple, the corresponding control signal acquisition logic block PBHDLR_XX, measurement signal acquisition logic block VAR_HEALTH_X, reset switching logic block PBHDLR_Xx, signal trigger logic block RUNG_X and cut average value logic block SWITCH_T_X are created.

[0062] Among them, the control signal acquisition logic block PBHDLR_XX is provided with a pinput input port connected to the control signal acquisition point l43ttxdx_pb, the measurement signal acquisition logic block VAR_HEALTH_X is provided with a VAR input port connected to the measurement signal acquisition point ttxdt_x, and the reset switching logic block PBHDLR_Xx is provided with a pinput input port connected to the reset point L43ttxd_Reset; the control signal acquisition logic block PBHDLR_XX, the measurement signal acquisition logic block VAR_HEALTH_X and the reset switching logic block The output end of the logic block PBHDLR_Xx is respectively connected to the C, D, and A input ports of the signal trigger logic block RUNG_X. The signal trigger logic block RUNG_X is also provided with a B port connected to the trigger point lttxdx_ALM. The node formed by the output port of the signal trigger logic block RUNG_X and the B port is connected to the SEL_T port of the cut average value logic block SWITCH_T_X. The cut average value logic block SWITCH_T_ is provided with a T port connected to the cut average value point TTXM. Each logic block is connected according to the above logic to obtain the cut average value control logic. Among them, the cut average value control logic of the #1 exhaust temperature thermocouple fault can be found in Figure 3 , #2 Exhaust Temperature Thermocouple Fault Cut Average Control Logic Please refer to Figure 4 , #31 Exhaust temperature thermocouple failure cut average value control logic please refer to Figure 5 The structure of other exhaust temperature thermocouple fault cut-off average value control logic is not described here.

[0063] It can be understood that the control signal acquisition logic block and the measurement signal acquisition logic block transmit the trigger signal of the exhaust temperature thermocouple fault to the cut average value logic block through the signal trigger logic block, so that the cut average value logic block executes the cut average value control logic for controlling each exhaust temperature thermocouple fault; the reset switching logic block transmits the reset signal to the cut average value logic block through the signal trigger logic block to reset the cut average value logic block.

[0064] The above-mentioned gas turbine exhaust temperature protection control method based on the GE9F gas turbine first obtains the MARK VIE logic for controlling the gas turbine and the server that calls the MARK VIE logic; wherein, the server is provided with a control panel for controlling the exhaust temperature thermocouple failure; under the logic project of the MARK VIE logic, there is a cut average value control logic for controlling each exhaust temperature thermocouple failure; when any exhaust temperature thermocouple in the logic project of the MARK VIE logic fails, the control logic for controlling the corresponding exhaust temperature thermocouple in the cut average value control logic is directly called; when an exhaust thermocouple failure occurs during the operation of the unit, and a cut average value control instruction issued by the control panel is received at the same time, the cut average value control logic is called according to the cut average value control instruction. Compared with the prior art, the present invention can effectively avoid the unit's false tripping accident when the exhaust temperature thermocouple fails, protect the unit's safe operation, and meet the actual application needs.

[0065] It should be understood that, although the various steps in the above-mentioned flow chart are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the above-mentioned flow chart may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0066] See also Figure 6 The present invention also provides a gas turbine exhaust temperature protection control system based on a GE9F gas turbine, wherein the unit of the GE9F gas turbine includes a first number of exhaust temperature thermocouples, and the system includes:

[0067] The MARK VIE logic block 21 is used to directly call the control logic for controlling the corresponding exhaust temperature thermocouple in the cut average value control logic when any exhaust temperature thermocouple in the logic project of the MARK VIE logic fails; wherein, under the logic project of the MARK VIE logic, there is a cut average value control logic for controlling each exhaust temperature thermocouple failure,

[0068] The server 22 is used to call the cut average value control logic according to the cut average value control instruction when an exhaust thermocouple failure occurs during the operation of the unit and a cut average value control instruction is received through the control panel; wherein the server is provided with a control panel for controlling the exhaust temperature thermocouple failure.

[0069] The server 22 is further configured to reset the tangent mean value control logic corresponding to the exhausted temperature thermocouple after the fault of the exhausted temperature thermocouple is cleared.

[0070] It should be noted that the MARK VIE logic runs on the gas engine exhaust protection device that protects the gas engine exhaust temperature, and the gas engine exhaust protection device can communicate with the server that calls the MARK VIE logic. The MARK VIE logic is loaded during the startup of the gas engine exhaust protection device. When the gas engine exhaust protection device is started, the MARK VIE logic is loaded and started, and the gas engine exhaust protection device that executes the MARK VIE logic establishes a communication connection with the server. Among them, the gas engine exhaust protection device that executes the MARK VIE logic receives the exhaust temperature thermocouple signals emitted by 31 exhaust temperature thermocouples through the PTCC terminal board.

[0071] It can be understood that 31 exhaust temperature thermocouples send exhaust temperature thermocouple signals to the gas turbine exhaust protection device that executes the MARK VIE logic in real time through the PTCC terminal board. The MARK VIE logic will receive the exhaust temperature thermocouple signals and compare them with the cut average value control logic that controls the failure of each exhaust temperature thermocouple in the logic project. When any exhaust temperature thermocouple fails, the control logic that controls the corresponding exhaust temperature thermocouple in the cut average value control logic is called to execute the cut average value control logic for the corresponding exhaust temperature thermocouple. Among them, the cut average value control logic switches the parameter value of the faulty exhaust temperature thermocouple involved in the unit operation processing and control to the average value, avoiding the unit tripping accident caused by the exhaust temperature thermocouple failure. The average value is calculated by adding the sum of all healthy exhaust temperature thermocouple working parameter values ​​divided by the number of all healthy exhaust temperature thermocouples.

[0072] When an exhaust thermocouple failure occurs during the operation of the unit and a cut-to-average value control instruction is received through the control panel of the server, the cut-to-average value control logic is called according to the cut-to-average value control instruction. When the fault of the exhaust temperature thermocouple is relieved, the cut-to-average value control logic corresponding to the exhausted temperature thermocouple that has been relieved of the fault is reset to effectively avoid false tripping accidents of the unit caused by the exhaust temperature thermocouple failure.

[0073] In the present embodiment, first, when any exhaust temperature thermocouple in the logic item of the MARK VIE logic fails, the control logic for controlling the corresponding exhaust temperature thermocouple in the cut average value control logic is directly called; when an exhaust thermocouple failure occurs during the operation of the unit and a cut average value control instruction is received through the control panel, the cut average value control logic is called according to the cut average value control instruction; when the fault of the faulty exhaust temperature thermocouple is relieved, the cut average value control logic corresponding to the relieved exhaust temperature thermocouple is reset, thereby effectively avoiding the unit tripping accident caused by the current exhaust temperature thermocouple failure, and at the same time, the cut average value control logic can be reset after the exhaust temperature thermocouple failure is relieved, thereby meeting the actual application needs.

[0074] like Figure 7 As shown, in a preferred embodiment, the MARK VIE logic block includes:

[0075] The project adding module 211 is used to create an exhaust thermocouple project under the logic project of the MARK VIE logic, and to create a new addition point under the exhaust thermocouple project; wherein the new addition point is a point required to be referenced when the exhaust temperature thermocouple cut average value control logic is used;

[0076] The logic creation module 212 is used to create a logic block corresponding to each of the newly added points under the task item of the MARK VIE logic, and connect each logic block according to the corresponding logic to obtain the tangent average value control logic.

[0077] Specifically, an exhaust thermocouple project EX (Exhaust Thermocouple) is created under the CUSTOM logic project of the MARK VIE logic, and under the exhaust thermocouple project, control signal acquisition point l43ttxdx_pb, measurement signal acquisition point ttxdt_x, reset point L43ttxd_Reset, trigger point lttxdx_ALM and average value point TTXM corresponding to 31 exhaust temperature thermocouples are created.

[0078] The value access type of the reset point L43ttxd_Reset is Read / Write, and the point type is BOOL. The reset point L43ttxd_Reset can be referenced to the control panel of the server, and can reset all the faulty exhaust temperature thermocouples with mean values ​​to normal values ​​after the faulty exhaust temperature thermocouples are processed normally.

[0079] The measurement signal acquisition point ttxdt_x is connected to the output end of the exhaust temperature thermocouple to obtain the exhaust temperature thermocouple signal of the corresponding exhaust temperature thermocouple, such as ttxdt_1 to obtain the exhaust temperature thermocouple signal numbered #1, ttxdt_2 to obtain the exhaust temperature thermocouple signal numbered #2... ttxdt_31 to obtain the exhaust temperature thermocouple signal numbered #31, and the value access type of the measurement signal acquisition point ttxdt_x is Read Only and the point type is REAL. The measurement signal acquisition point ttxdt_x can obtain the current exhaust temperature thermocouple field measurement signal, feed it back to the control panel of the server, and give the MARK VIE logic to judge whether the component is good or bad.

[0080] The control signal acquisition point l43ttxdx_pb is connected to the output end of the exhaust temperature thermocouple to obtain the exhaust temperature thermocouple signal of the corresponding exhaust temperature thermocouple, such as l43ttxd_pb is used to obtain the exhaust temperature thermocouple signal numbered #1, l43ttxd2_pb is used to obtain the exhaust temperature thermocouple signal numbered #2...l43ttxd31_pb is used to obtain the exhaust temperature thermocouple signal numbered #31, the value access type of the control signal acquisition point l43ttxdx_pb is Read / Write, the point type is BOOL, and the control signal acquisition point l43ttxdx_pb can be referenced to the control panel of the server.

[0081] The trigger point lttxdx_ALM is used to simultaneously obtain the trigger signals sent by the control signal acquisition point l43ttxdx_pb and the measurement signal acquisition point ttxdt_x of the current exhaust temperature thermocouple, such as ttxdt_1 for obtaining the exhaust temperature thermocouple trigger signal numbered #1, ttxdt_2 for obtaining the exhaust temperature thermocouple trigger signal numbered #2... ttxdt_31 for obtaining the exhaust temperature thermocouple trigger signal numbered #31. The value access type of the trigger point lttxdx_ALM is Read Only, the point type is REAL, and the trigger point lttxdx_ALM can alarm the current exhaust temperature thermocouple when receiving the trigger signal sent by the control signal acquisition point l43ttxdx_pb and / or the measurement signal acquisition point ttxdt_x, and send the trigger signal to the cut average value point TTXM, so that the cut average value point TTXM calls the cut average value control logic and switches the parameter value of the currently faulty exhaust temperature thermocouple to the average value to participate in the unit control.

[0082] Furthermore, according to the control signal acquisition point l43ttxdx_pb, measurement signal acquisition point ttxdt_x, reset point L43ttxd_Rese, trigger point lttxdx_ALM and cut average value point TTXM of each exhaust temperature thermocouple, the corresponding control signal acquisition logic block PBHDLR_XX, measurement signal acquisition logic block VAR_HEALTH_X, reset switching logic block PBHDLR_Xx, signal trigger logic block RUNG_X and cut average value logic block SWITCH_T_X are created.

[0083] Among them, the control signal acquisition logic block PBHDLR_XX is provided with a pinput input port connected to the control signal acquisition point l43ttxdx_pb, the measurement signal acquisition logic block VAR_HEALTH_X is provided with a VAR input port connected to the measurement signal acquisition point ttxdt_x, and the reset switching logic block PBHDLR_Xx is provided with a pinput input port connected to the reset point L43ttxd_Reset; the control signal acquisition logic block PBHDLR_XX, the measurement signal acquisition logic block VAR_HEALTH_X and the reset switching logic block The output end of the logic block PBHDLR_Xx is respectively connected to the C, D, and A input ports of the signal trigger logic block RUNG_X. The signal trigger logic block RUNG_X is also provided with a B port connected to the trigger point lttxdx_ALM. The node formed by the output port of the signal trigger logic block RUNG_X and the B port is connected to the SEL_T port of the cut average value logic block SWITCH_T_X. The cut average value logic block SWITCH_T_ is provided with a T port connected to the cut average value point TTXM. Each logic block is connected according to the above logic to obtain the cut average value control logic. Among them, the cut average value control logic of #1 and #2 exhaust temperature thermocouple faults can be found in Figure 2 The structure of other exhaust temperature thermocouple fault cutting average value control logic will not be described here.

[0084] The gas turbine exhaust temperature protection control system based on the GE9F gas turbine provided in the embodiment of the present invention first obtains the MARK VIE logic for controlling the gas turbine and the server for calling the MARK VIE logic; wherein the server is provided with a control panel for controlling the exhaust temperature thermocouple failure; under the logic project of the MARK VIE logic, a cut average value control logic for controlling each exhaust temperature thermocouple failure is provided; the MARK VIE logic block is used to directly call the control logic for controlling the corresponding exhaust temperature thermocouple in the cut average value control logic when any exhaust temperature thermocouple in the logic project of the MARK VIE logic fails; the server is used to call the cut average value control logic according to the cut average value control instruction when an exhaust thermocouple failure occurs during the operation of the unit and a cut average value control instruction issued by the control panel is received. Compared with the prior art, the present invention can effectively avoid the unit malfunction tripping accident when the exhaust temperature thermocouple fails, protect the unit safe operation, and meet the actual application needs.

[0085] An embodiment of the present invention also provides a computer-readable storage medium, which includes a stored computer program; wherein, when the computer program is running, it controls the device where the computer-readable storage medium is located to execute the above-mentioned gas turbine exhaust temperature protection control method based on the GE9F gas turbine.

[0086] An embodiment of the present invention also provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the above-mentioned gas turbine exhaust temperature protection control method based on the GE9F gas turbine.

[0087] Preferably, the computer program can be divided into one or more modules / units (such as computer program 1, computer program 2, ...), and the one or more modules / units are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units can be a series of computer program instruction segments that can complete specific functions, and the instruction segments are used to describe the execution process of the computer program in the terminal device.

[0088] The processor may be a central processing unit (CPU), or other general-purpose processors, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor. The processor is the control center of the terminal device, and various parts of the terminal device are connected using various interfaces and lines.

[0089] The memory mainly includes a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function, etc., and the data storage area can store related data, etc. In addition, the memory can be a high-speed random access memory, or a non-volatile memory, such as a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, and a flash card (Flash Card), etc., or the memory can also be other volatile solid-state storage devices.

[0090] It should be noted that the above-mentioned terminal device may include, but is not limited to, a processor and a memory. Those skilled in the art may understand that the terminal device may also include more or fewer components than the above-mentioned, or a combination of certain components, or different components.

[0091] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for protecting and controlling exhaust temperature of a gas turbine based on a GE9F gas turbine, wherein the unit of the GE9F gas turbine comprises a first number of exhaust temperature thermocouples, characterized in that: The method comprises the following steps: Obtaining the MARK VIE logic for controlling the gas engine and the server for calling the MARK VIE logic; wherein the server is provided with a control panel for controlling exhaust temperature thermocouple failures; under the logic item of the MARK VIE logic, a tangent average value control logic for controlling each exhaust temperature thermocouple failure is provided; When any exhaust temperature thermocouple in the logic items of the MARK VIE logic fails, the control logic for controlling the corresponding exhaust temperature thermocouple in the mean value control logic is directly called; When an exhaust thermocouple failure occurs during the operation of the unit and a cut average value control instruction is received through the control panel, the cut average value control logic is called according to the cut average value control instruction; Under the logic item of the MARK VIE logic, the steps of setting the mean value control logic for controlling each exhaust temperature thermocouple fault include: Create an exhaust thermocouple project under the logic project of the MARK VIE logic, and create a new added point under the exhaust thermocouple project; wherein the new added point is a point required to be referenced when the exhaust temperature thermocouple average value control logic is used; Under the task item of the MARK VIE logic, create a logic block corresponding to each of the newly added points, and connect each logic block according to the corresponding logic to obtain the tangent average value control logic; The newly added points include control signal acquisition points, measurement signal acquisition points, reset points, signal trigger points and cut average points; The switching average value control logic is to switch the parameter value of the faulty exhaust temperature thermocouple involved in the unit operation processing and control to the average value, and the average value is calculated by adding the sum of the working parameter values ​​of all healthy exhaust temperature thermocouples divided by the number of all healthy exhaust temperature thermocouples.

2. The gas turbine exhaust temperature protection control method based on the GE9F gas turbine according to claim 1 is characterized in that: The method further comprises: When the fault of the exhaust temperature thermocouple is cleared, the tangent mean value control logic corresponding to the exhaust temperature thermocouple whose fault is cleared is reset.

3. The gas turbine exhaust temperature protection control method based on the GE9F gas turbine according to claim 1 is characterized in that: Under the task item of the MARK VIE logic, the steps of creating a logic block corresponding to each of the newly added points and connecting each logic block according to the corresponding logic to obtain the tangent average value control logic include: According to the control signal acquisition point, measurement signal acquisition point, reset point, trigger point and average value point in the newly added points, a control signal acquisition logic block, a measurement signal acquisition logic block, a reset switching logic block, a signal trigger logic block and an average value logic block of each exhaust temperature thermocouple are correspondingly created; Connecting the output ends of the control signal acquisition logic block, the measurement signal acquisition logic block and the reset switching logic block to the input end of the signal trigger logic block, and connecting the output end of the signal trigger logic block to the cut average value logic block to obtain the cut average value control logic; Among them, the control signal acquisition logic block and the measurement signal acquisition logic block transmit the trigger signal of the exhaust temperature thermocouple fault to the cut average value logic block through the signal trigger logic block, so that the cut average value logic block executes the cut average value control logic for controlling each exhaust temperature thermocouple fault; the reset switching logic block transmits the reset signal to the cut average value logic block through the signal trigger logic block to reset the cut average value logic block.

4. A gas turbine exhaust temperature protection control system based on a GE9F gas turbine, using the gas turbine exhaust temperature protection control method based on a GE9F gas turbine as claimed in claim 1, wherein the unit of the GE9F gas turbine comprises a first number of exhaust temperature thermocouples, characterized in that: The system comprises: The MARK VIE logic block is used to directly call the control logic of the mean value control logic to control the corresponding exhaust temperature thermocouple when any exhaust temperature thermocouple in the logic project of the MARK VIE logic fails; wherein, under the logic project of the MARK VIE logic, there is a mean value control logic for controlling each exhaust temperature thermocouple failure, The server is used for calling the cut average value control logic according to the cut average value control instruction when an exhaust thermocouple fault occurs during the operation of the unit and a cut average value control instruction is received through the control panel; wherein the server is provided with a control panel for controlling the exhaust temperature thermocouple fault.

5. The gas turbine exhaust temperature protection control system based on the GE9F gas turbine according to claim 4 is characterized in that: The server is further used for resetting the tangent mean value control logic corresponding to the exhausted temperature thermocouple whose fault is relieved after the fault of the exhausted temperature thermocouple is relieved.

6. The gas turbine exhaust temperature protection control system based on the GE9F gas turbine according to claim 4 is characterized in that: The MARK VIE logic block includes: A project addition module is used to create an exhaust thermocouple project under the logic project of the MARK VIE logic, and to create a new addition point under the exhaust thermocouple project; wherein the new addition point is a point required to be referenced when the exhaust temperature thermocouple cut average value control logic is used; The logic creation module is used to create a logic block corresponding to each of the newly added points under the task project of the MARK VIE logic, and connect each logic block according to the corresponding logic to obtain the tangent average value control logic.

7. The gas turbine exhaust temperature protection control system based on the GE9F gas turbine according to claim 6 is characterized in that: The newly added points include a control signal acquisition point, a measurement signal acquisition point, a reset point, a trigger point and a cut average point.

8. The gas turbine exhaust temperature protection control system based on the GE9F gas turbine according to claim 7 is characterized in that: The logic creation module is specifically used to: According to the control signal acquisition point, measurement signal acquisition point, reset point, trigger point and average value point in the newly added points, a control signal acquisition logic block, a measurement signal acquisition logic block, a reset switching logic block, a signal trigger logic block and an average value logic block of each exhaust temperature thermocouple are correspondingly created; Connecting the output ends of the control signal acquisition logic block, the measurement signal acquisition logic block and the reset switching logic block to the input end of the signal trigger logic block, and connecting the output end of the signal trigger logic block to the cut average value logic block to obtain the cut average value control logic; Among them, the control signal acquisition logic block and the measurement signal acquisition logic block transmit the trigger signal of the exhaust temperature thermocouple fault to the cut average value logic block through the signal trigger logic block, so that the cut average value logic block executes the cut average value control logic for controlling each exhaust temperature thermocouple fault; the reset switching logic block transmits the reset signal to the cut average value logic block through the signal trigger logic block to reset the cut average value logic block.

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