Gas turbine starting pry swash plate control method, device, equipment, medium and program product

Abstract

The invention relates to a gas turbine starting pry swash plate control method, device and equipment, a medium and a program product. The method comprises the steps that a first deviation value between the actual control oil pressure of the starting pry and a first target set value is obtained; acquiring a second deviation value between the actual rotating speed of the gas turbine and a second target set value; determining different control strategies according to the first deviation value and the second deviation value; wherein the control strategy comprises a PID (Proportion Integration Differentiation) control strategy and a climbing control strategy. Therefore, stable control over the oil pressure of the starting pry can be achieved, quick response can be achieved according to requirements, and the requirements for starting and rotating speed adjusting speed are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automation control, in particular to a gas turbine starting yoke swash plate control method and device, computer equipment, computer readable storage medium and computer program product. BACKGROUND

[0002] When the gas turbine is completely stationary, fuel and air cannot be directly delivered to the combustion chamber for ignition and starting, because the air-fuel ratio of the combustion chamber cannot be effectively controlled, and there is a risk of not igniting, even fuel leakage and deflagration. Therefore, when the gas turbine starts, the gas turbine needs to be dragged to a certain speed by the gas turbine starting yoke, and then the combustion chamber of the gas turbine can enter fuel and air. When the air-fuel ratio reaches a certain proportion, ignition can be successful, and the speed can be gradually increased. In conventional control, the control oil pressure of the gas turbine starting yoke is generally controlled by a proportion-integration-differentiation (PID) control swash plate output, and then the control oil pressure is adjusted to increase to drag the gas turbine to increase the speed.

[0003] However, the control oil pressure of the gas turbine starting yoke is not a conventional PID control object, and the oil pressure and the swash plate output are not linear, and in some valve opening conditions, the oil pressure will rise or fall sharply. For example, during the starting process, the oil pressure needs to reach a certain pressure (such as 8000kPa) to drag the gas turbine to rotate; during the subsequent speed increasing process, the starting yoke control oil pressure set value is gradually increased, and at the same time, the swash plate output is required to be continuously opened. If the swash plate opening is small or remains unchanged, the control oil will fall, and the oil pressure will also drop sharply, resulting in a decrease in the speed. Therefore, there is an urgent need for a method that can achieve stable control of the starting yoke control oil and make a quick response according to the demand. SUMMARY

[0004] Therefore, it is necessary to provide a gas turbine starting yoke swash plate control method, device, computer equipment, computer readable storage medium and computer program product that can achieve stable control of the starting yoke control oil and make a quick response according to the demand.

[0005] In a first aspect, the present application provides a gas turbine starting yoke swash plate control method, which comprises: obtaining a first deviation value between an actual control oil pressure of the starting yoke and a first target set value; obtaining a second deviation value between an actual speed of the gas turbine and a second target set value; determining different control strategies according to the first deviation value and the second deviation value; wherein the control strategies include a PID control strategy and a ramp control strategy.

[0006] In one of the embodiments, the determining of the different control strategies according to the first deviation value and the second deviation value comprises: When the first deviation value and the second deviation value are both greater than a preset upper limit value, a ramp control strategy is selected by the selector, and the ramp control strategy comprises: increasing the speed according to a preset ramp rate; When the first deviation value and the second deviation value are both less than a preset lower limit value, a ramp control strategy is selected by the selector, and the ramp control strategy comprises: decreasing the speed according to a preset ramp rate; When the second deviation value is within a preset range, a PID control strategy is selected by the selector.

[0007] In one of the embodiments, the method further comprises: If the selector selects the ramp control strategy, the output of the PID loop tracks the output of the ramp control; If the selector selects the PID control strategy, the output of the ramp control strategy tracks the output of the PID loop.

[0008] In one of the embodiments, the method further comprises: After the ignition of the gas turbine is successful, if the trip speed is not reached for a long time to trigger the shutdown, the gas turbine falls from a high speed, causing the control oil pressure to be higher than the protection value, the actual cam plate output value is controlled to decrease at a first segmented ramp rate until the actual starting lever control oil pressure is less than the control oil pressure protection value; After the ignition of the gas turbine is successful, if the trip speed is reached, the supply of the starting lever control oil is cut off.

[0009] In one of the embodiments, the method further comprises: When the ramp control strategy is used, if the actual cam plate output value is within a preset range, no periodic superposition is performed.

[0010] In one of the embodiments, the method further comprises: When the ramp control strategy is used, if the actual starting lever control oil pressure is less than the difference between the control oil pressure protection value and the protection margin value, the actual cam plate output value is controlled to remain unchanged.

[0011] In a second aspect, the application further provides a gas turbine starting lever cam plate control device, which comprises: A first acquisition module is configured to acquire a first deviation value between an actual starting lever control oil pressure and a first target set value; A second acquisition module is configured to acquire a second deviation value between an actual gas turbine speed and a second target set value; The control module is configured to determine different control strategies according to the first deviation value and the second deviation value, wherein the control strategies include a PID control strategy and a ramp control strategy.

[0012] In a third aspect, the present application provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the following steps when executing the computer program: obtaining a first deviation value between the actual control oil pressure of the starting lever and a first target set value; obtaining a second deviation value between the actual rotating speed of the gas turbine and a second target set value; determining different control strategies according to the first deviation value and the second deviation value, wherein the control strategies include a PID control strategy and a ramp control strategy.

[0013] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program, and the computer program implements the following steps when executed by a processor: obtaining a first deviation value between the actual control oil pressure of the starting lever and a first target set value; obtaining a second deviation value between the actual rotating speed of the gas turbine and a second target set value; determining different control strategies according to the first deviation value and the second deviation value, wherein the control strategies include a PID control strategy and a ramp control strategy.

[0014] In a fifth aspect, the present application provides a computer program product, comprising a computer program, and the computer program implements the following steps when executed by a processor: obtaining a first deviation value between the actual control oil pressure of the starting lever and a first target set value; obtaining a second deviation value between the actual rotating speed of the gas turbine and a second target set value; determining different control strategies according to the first deviation value and the second deviation value, wherein the control strategies include a PID control strategy and a ramp control strategy.

[0015] The above-mentioned gas turbine starting lever swash plate control method, device, computer device, computer readable storage medium and computer program product can obtain a first deviation value between the actual control oil pressure of the starting lever and a first target set value, obtain a second deviation value between the actual rotating speed of the gas turbine and a second target set value, and determine different control strategies according to the first deviation value and the second deviation value, wherein the control strategies include a PID control strategy and a ramp control strategy. Thus, stable control of the starting lever control oil pressure can be achieved, and quick response can be achieved according to requirements to meet the requirements of starting the gas turbine and adjusting the rotating speed. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application or the related art. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other related drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 It is a schematic diagram of the principle of PID control in the related art. Figure 2 It is a flow chart of a gas turbine starting skive swash plate control method provided by an embodiment of the present application. Figure 3 It is a schematic diagram of the control principle of the gas turbine starting skive swash plate control method in an embodiment of the present application. Figure 4 It is a schematic diagram of an application example of the gas turbine starting skive swash plate control method in an embodiment of the present application. Figure 5 It is a schematic diagram of the protection principle in various extreme situations in an embodiment of the present application. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0019] In order to facilitate the understanding of the technical solutions in each embodiment of the embodiments of the present application, first, the professional terms that may appear in each embodiment of the present application are briefly described: Proportion Integration Differentiation (PID) control: a control system based on proportion, integration and differentiation links, used to adjust the deviation signal of the system to reduce the error. The output value of the PID controller depends on the linear weighted combination of the deviation between the given value of the system and the output value of the system, the integral of the deviation and the differential of the deviation. This control strategy has the advantages of simple principle, strong robustness and wide practicality, and is the most widely used control system in industrial process control.

[0020] Programmable Logic Controller (PLC) is a digital operation electronic system specially designed for application in industrial environment. It uses a programmable memory to store instructions for performing logic operation, sequential control, timing, counting and arithmetic operation, etc. in its internal memory, and controls various types of mechanical equipment or production process through digital or analog input and output.

[0021] Engine starting lever: used for starting the engine in a static state, the main function is to start the oil pump, adjust the swash plate output to adjust the control oil to drag the engine from static to purge and ignition speed. After the engine is successfully ignited, the speed slowly rises to the tripping speed, the swash plate is closed after tripping, the starting lever stops output, and the subsequent engine adjusts the fuel amount to rise to idle speed.

[0022] In the related art, if the conventional PID control engine starting lever control oil pressure is directly used, the PID parameter needs to be specially adjusted. If the parameter is too strong, the actual value of the starting lever control oil may be higher than the set value during the starting speed-up process. That is, there is overshoot, which further causes the swash plate to maintain output or reduce output, or the oil pressure suddenly falls or rises under normal control. The PID control swash plate output will also be the same, which cannot guarantee the continuous and stable opening of the swash plate, and the sudden change of the oil pressure also causes a large deviation between the set value and the actual value, and the swash plate output changes greatly, so that the oil pressure changes sharply. Such repeated changes cause the speed and oil pressure to fluctuate and oscillate sharply, which poses a risk of damaging the starting lever and the engine rotor. If the parameter is weak, the swash plate opening speed is too slow, and it cannot meet the engine speed requirement, so how to make the starting lever control oil control stable and quickly respond to the demand is particularly important during the engine starting process.

[0023] In view of the problems in the related art, the embodiments of the present application aim to provide an engine starting lever swash plate control method, which combines PID closed-loop control and open-loop ramp control to realize stable control of the starting lever control oil pressure, and quickly respond to the demand to meet the engine starting and speed regulation rate requirements.

[0024] Exemplary, Figure 1 The principle of PID control in the related art is shown in FIG. 1, and its control process can be represented by the following formula: Figure 1 ​Wherein, Kp is a proportional coefficient, which can take a fixed value; e(t) is a deviation value; u(t) is a control amount; T1 is an adoption period, Td is a differential time constant, t is time; when e(t) is not 0, a u(t) is output to act on the controlled object for adjustment, the controlled object simultaneously feeds back the real-time state y(t), and compares with the set value r(t) to obtain the deviation value e(t), and then calculates and outputs a closed-loop control mode of u(t).

[0025] Exemplarily, Figure 2 A flow chart of a gas turbine starting pry swash plate control method provided by the embodiment is shown in Figure 2 The method can include the following steps: Step S201, obtaining a first deviation value between an actual control oil pressure of the starting pry and a first target set value.

[0026] Step S202, obtaining a second deviation value between an actual speed of the gas turbine and a second target set value.

[0027] Step S203, determining different control strategies according to the first deviation value and the second deviation value; wherein the control strategies include: a PID control strategy and a ramp control strategy.

[0028] Optionally, when the first deviation value and the second deviation value are both greater than a preset upper limit value, the ramp control strategy is selected by the selector, and the ramp control strategy includes: increasing the speed at a preset ramp rate.

[0029] Optionally, when the first deviation value and the second deviation value are both less than a preset lower limit value, the ramp control strategy is selected by the selector, and the ramp control strategy includes: decreasing the speed at a preset ramp rate.

[0030] In the embodiment, when the speed and oil pressure deviation are large, the ramp control strategy is used for speed control, so as to prevent the PID from adjusting back and forth when the oil pressure is unstable, thereby causing the oscillation of the oil pressure and the speed. Exemplarily, when the starting pry control oil pressure is unstable, as long as the speed and the oil pressure do not reach the target value, the speed is adjusted at a certain rate to directly cross the unstable region.

[0031] Optionally, when the second deviation value is within a preset range, the PID control strategy is selected by the selector.

[0032] Optionally, if the selector selects the ramp control strategy, the output of the PID loop tracks the output of the ramp control; If the selector selects the PID control strategy, the output of the ramp control strategy tracks the output of the PID loop.

[0033] In this embodiment, an open-loop ramping mode can be added to the PID control, so that the swashplate output will not be reduced when the gas turbine is in the acceleration phase (when the actual speed value has not reached the set value), so that the PID control and ramping control outputs track each other and prevent output jumps when switching.

[0034] For example, Figure 3 This is a schematic diagram of the control principle of the gas turbine start-up skid swashplate control method in one embodiment of this application, as shown below. Figure 3 As shown, based on the conventional PID algorithm, a selector and ramp control are added. The deviation between the actual control oil pressure PV1 and the target setpoint SV1 of the starter skid is defined as e(t1), and the deviation between the actual speed PV2 and the target setpoint SV2 of the gas turbine is defined as e(t2). When the positive deviations of e(t1) and e(t2) are greater than a certain limit, the selector selects ramp control to increase the speed at a certain ramp rate. When the negative deviations of e(t1) and e(t2) are greater than a certain limit, the selector selects ramp control to decrease the speed at a certain ramp rate. When the speed deviation e(t2) is within a certain positive and negative limit range, the selector selects the PID loop for control. When ramp control is selected, the PID output tracks the ramp control output. When the PID loop is selected, the ramp control output tracks the PID output to prevent sudden changes in swashplate opening when the loop selection is switched.

[0035] For example, Figure 4 This is a schematic diagram illustrating an application example of the gas turbine start-up skid swashplate control method in one embodiment of this application, such as... Figure 4 As shown, NGG is defined as the actual speed, NGG_SET as the final speed setpoint, PT as the actual start-sled control oil pressure, PT_SET as the oil pressure setpoint, PID_OUT as the actual PID output, XP_RATE1 and XP_RATE2 as the segmented ramp rates, PID_EN as the loop enable, PT_MAX as the control oil pressure protection value, PID_SWTR as the tracking switch, and XP_MV as the actual swashplate output value. Specifically, when e(t1) = PT_SET - PT, e(t2) = NGG_SET – NGG, and ramp control is selected, XP_MV performs ramp control using XP_RATE1 / XP_RATE2, which is superimposed in each control cycle. PID_SWTR is then set to ON, and the PID control loop output tracks the ramp output value. When the deviation of e(t1) is too large, and the fast ramp rate XP_RATE1 is selected, and XP_RATE2 is selected when the deviation of e(t1) is close, and the PID loop is selected, PID_SWTR is set to OFF, and the ramp output tracks the PID output. During the startup phase, in order to speed up the startup, when XP_MV < 30 and NGG < 200, XP_MV ramps at 5 times the XP_RATE1 rate.

[0036] Optionally, if the gas turbine fails to reach the trip speed to trigger a shutdown after successful ignition, the gas turbine drops from high speed, causing the control oil pressure to be higher than the protection value. In this case, the actual swashplate output value is reduced at the first segment ramp rate until the actual start-up skid control oil pressure is lower than the control oil pressure protection value.

[0037] Optionally, when using a ramp control strategy, if the actual swashplate output value is within a preset range, then no cycle-by-cycle superposition is performed.

[0038] Optionally, when using a ramp control strategy, if the actual starting swashplate control oil pressure is less than the difference between the control oil pressure protection value and the protection margin value, the actual swashplate output value is kept unchanged.

[0039] Optionally, after the gas turbine is successfully ignited, if the trip speed is reached, the supply of control oil to the starter skid is cut off.

[0040] For example, Figure 5 This is a schematic diagram illustrating the protection principle under various extreme conditions in one embodiment of this application, combined with... Figure 4 ,like Figure 5 As shown: 1) After successful ignition, if the trip speed is not reached and the engine stops due to unmet conditions, the gas turbine will drop from its high speed. The starter skid needs to hold the gas turbine at the purging speed for purging. At this time, the gas turbine speed supply is entirely provided by the starter skid, resulting in excessively high oil pressure (PT > PT_MAX). XP_MV will then be reduced rapidly at XP_RATE1 until PT < PT_MAX. 2) Since XP_MV is accumulated every cycle during ramp control, it may exceed the upper and lower limits without restriction. Therefore, XP_MV needs to be limited to 0-100% during ramp control; if it exceeds this range, it will not be accumulated every cycle. 3) During ramp-up, due to the lag between speed and oil pressure (i.e., the oil pressure has reached its high limit while the speed is still slowly increasing), XP_MV is maintained when PT < PT_MAX - 1000 during ramp-up to prevent excessively high oil pressure. 4) After successful ignition, when the trip speed is reached, the control oil supply to the starter skid needs to be cut off quickly to prevent the gas turbine from rotating in the reverse direction at high speed and damaging the starter skid. Therefore, when the trip speed is reached, the PID_EN circuit is not enabled and the XP_MV is quickly set to 0.

[0041] In this embodiment, during the startup phase, when the swashplate opening is below 30% and the rotational speed is below 200 rpm, the swashplate opens rapidly to reduce startup time. During acceleration and deceleration, the actual pressure and the protection pressure can be compared in real time. When PT > PT_MAX-1000, the swashplate output remains unchanged. When PT > PT_MAX, the swashplate opening is closed rapidly to quickly reduce oil pressure.

[0042] In this embodiment, overpressure protection can be achieved. In normal regulation, if the oil pressure PT > PT_MAX - 1000, the swash plate opening degree is maintained. When PT > PT_MAX, the swash plate opening degree is closed at a fast rate of XP_RATE1, ensuring that the oil pressure does not exceed in normal regulation, and if the oil pressure exceeds, the fast regulation is used to reduce the oil pressure.

[0043] It should be noted that the method in this embodiment can achieve fast start. For example, in the conventional PID control of the gas turbine start, the set value is slowly ramped up when starting, that is, e(t) is small at the start, and the swash plate opening rate is slow. In reality, when the gas turbine is started, it takes 10-20 seconds from clicking the start to the gas turbine having a speed. However, using the method in the application embodiment, it only takes 3-5 seconds from clicking the start to the gas turbine having a speed, greatly shortening the time from starting to having a speed.

[0044] It should be understood that in some gas turbine tests, because repeated stopping and starting are required for running-in, if the starting is too slow, the rotor bearing may be overheated, resulting in jamming and unable to drive. Therefore, the shorter the time from starting to having a speed, the better.

[0045] It should be understood that although each step in the flowchart involved in each of the above embodiments is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise stated herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each of the above embodiments can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0046] Based on the same inventive concept, the application embodiments also provide a gas turbine start swash plate control device for implementing the above-mentioned gas turbine start swash plate control method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, and therefore the specific limitations in one or more gas turbine start swash plate control device embodiments provided below can refer to the limitations of the gas turbine start swash plate control method described above, which will not be repeated here.

[0047] The application embodiments provide a gas turbine start swash plate control device, which can include a first acquisition module, a second acquisition module, and a control module; wherein: The first obtaining module is configured to obtain a first deviation value between an actual control oil pressure of the starting lever and a first target set value. The second obtaining module is configured to obtain a second deviation value between an actual speed of the gas turbine and a second target set value. The control module is configured to determine different control strategies according to the first deviation value and the second deviation value, wherein the control strategies include a PID control strategy and a ramping control strategy.

[0048] For example, the control module is specifically configured to: When the first deviation value and the second deviation value are both greater than a preset upper limit value, the ramping control strategy is selected by the selector, and the ramping control strategy includes increasing the speed at a preset ramping rate. When the first deviation value and the second deviation value are both less than a preset lower limit value, the ramping control strategy is selected by the selector, and the ramping control strategy includes decreasing the speed at a preset ramping rate. When the second deviation value is within a preset range, the PID control strategy is selected by the selector.

[0049] For example, the control module is further configured to: When the PID control strategy is adopted, if the ramping control strategy is selected by the selector, the output of the PID loop tracks the output of the ramping control; when the ramping control strategy is adopted, if the PID control strategy is selected by the selector, the output of the ramping control strategy tracks the output of the PID loop.

[0050] For example, the control module is further configured to: after the gas turbine is successfully ignited, if the trip speed is not reached for a long time to trigger shutdown, the gas turbine falls from a high speed, causing the control oil pressure to be higher than a protection value, the actual swash plate output value is controlled to decrease at a first segmented ramping rate until the actual starting lever control oil pressure is less than the control oil pressure protection value; after the gas turbine is successfully ignited, if the trip speed is reached, the supply of the starting lever control oil is cut off.

[0051] For example, the control module is further configured to: when the ramping control strategy is adopted, if the actual swash plate output value is within a preset range, no superposition is performed every cycle.

[0052] For example, the control module is further configured to: when the ramping control strategy is adopted, if the actual starting lever control oil pressure is less than a difference between the control oil pressure protection value and a protection margin value, the actual swash plate output value is controlled to remain unchanged.

[0053] The modules in the engine starting skive swash plate control device can be implemented by software, hardware, or a combination thereof. The modules can be embedded in or independent of a processor in a computer device in hardware form, or stored in a memory in the computer device in software form, so that the processor can call and execute the operations corresponding to the modules.

[0054] In an example embodiment, a computer device, which can be a server, is provided. The computer device includes a processor, a memory, an input / output interface, and a communication interface. The processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for running the operating system and the computer program in the non-volatile storage medium. The database of the computer device is configured to store data. The input / output interface of the computer device is configured to exchange information between the processor and external devices. The communication interface of the computer device is configured to communicate with external terminals through a network connection. The computer program is executed by the processor to implement an engine starting skive swash plate control method.

[0055] In an example embodiment, a computer device is provided, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps in the method embodiments.

[0056] In an example embodiment, a computer readable storage medium is provided, which stores a computer program. The computer program is executed by a processor to implement the steps in the method embodiments.

[0057] In an example embodiment, a computer program product is provided, which includes a computer program. The computer program is executed by a processor to implement the steps in the method embodiments.

[0058] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use, and processing of related data need to comply with relevant regulations.

[0059] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiment methods. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. The non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. The volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., without being limited thereto.

[0060] The technical features of the above embodiments can be combined in any way. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0061] The above-described embodiments are merely illustrative of several embodiments of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A method of controlling a starting swash plate of a combustion engine, characterized by, The method comprises: obtaining a first deviation value between an actual control oil pressure of a starting lever and a first target set value; obtaining a second deviation value between an actual rotating speed of the gas turbine and a second target set value; determining different control strategies according to the first deviation value and the second deviation value, wherein the control strategies comprise a PID control strategy and a ramp control strategy.

2. The method of claim 1, wherein, The step of determining different control strategies according to the first deviation value and the second deviation value comprises: when the first deviation value and the second deviation value are both greater than a preset upper limit value, selecting the ramp control strategy by a selector, and the ramp control strategy comprises increasing the rotating speed at a preset ramp rate; when the first deviation value and the second deviation value are both less than a preset lower limit value, selecting the ramp control strategy by the selector, and the ramp control strategy comprises decreasing the rotating speed at the preset ramp rate; when the second deviation value is within a preset range, selecting the PID control strategy by the selector.

3. The method of claim 1, wherein, The method further comprises: if the selector selects the ramp control strategy, tracking the output of the ramp control by the output of a PID loop; if the selector selects the PID control strategy, tracking the output of the PID loop by the output of the ramp control strategy.

4. The method of claim 1, wherein, The method further comprises: after the gas turbine is successfully ignited, if the trip rotating speed is not reached for a long time to trigger shutdown, the gas turbine drops from a high rotating speed, and the control oil pressure is higher than a protection value, then the actual cam plate output value is decreased at a first segmented ramp rate until the actual starting lever control oil pressure is less than the control oil pressure protection value; after the gas turbine is successfully ignited, if the trip rotating speed is reached, then the supply of the starting lever control oil is cut off.

5. The method according to any one of claims 1 to 4, characterized in that, The method further comprises: when the ramp control strategy is adopted, if the actual cam plate output value is within a preset range, then no superposition is performed every cycle.

6. The method according to any one of claims 1 to 4, characterized in that, The method further comprises: when the ramp control strategy is adopted, if the actual starting lever control oil pressure is less than a difference between the control oil pressure protection value and a protection margin value, then the actual cam plate output value is maintained unchanged.

7. A control device for a combustion engine starting swash plate, characterized in that The device comprises: a first obtaining module configured to obtain a first deviation value between an actual control oil pressure of a starting lever and a first target set value; a second obtaining module configured to obtain a second deviation value between an actual rotating speed of the gas turbine and a second target set value; a control module configured to determine different control strategies according to the first deviation value and the second deviation value, wherein the control strategies comprise a PID control strategy and a ramp control strategy. 8.A computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer device is configured to perform the method according to any one of claims 1-7. The processor executes the computer program to implement the steps of the method in any one of claims 1 to 6.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method in any one of claims 1 to 6.

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

Images