CN116857026A

CN116857026A - Jigger control method, jigger control system and jigger control device

Info

Publication number: CN116857026A
Application number: CN202310900658.7A
Authority: CN
Inventors: 姜礼东; 尹子沉; 金阳; 罗鹏; 崔翔东; 秦洋; 唐超
Original assignee: China Nuclear Power Engineering Co Ltd
Current assignee: China Nuclear Power Engineering Co Ltd
Priority date: 2023-07-20
Filing date: 2023-07-20
Publication date: 2023-10-10

Abstract

The application relates to a jigger control method, a jigger control system and a jigger control device, wherein the method comprises the steps of determining the current rotating speed and jigger rotating speed of a steam turbine through a controller under the condition of receiving a jigger starting instruction sent by a main control system of the steam turbine, and controlling jigger operation according to the current rotating speed and jigger rotating speed of the steam turbine; and under the condition that a jigger shutdown instruction sent by the main control system of the steam turbine is received, determining the tripping state of the jigger, and controlling the jigger to stop according to the tripping state. The method realizes the automatic start operation of the jigger under different working conditions of the steam turbine, and controls the jigger to stop operation automatically in the scenes of different working conditions under the tripping state of the jigger, so that the control method can realize the comprehensive control of the jigger, and further improve the stability and safety of jigger control, and not only considers different working conditions during jigger operation, but also considers different working conditions during jigger stopping operation.

Description

Jigger control method, jigger control system and jigger control device

Technical Field

The application relates to the technical field of nuclear steam turbines, in particular to a jigger control method, a jigger control system and a jigger control device.

Background

The nuclear power plant steam turbine is provided with a jigger device which is mainly used for continuously jigging the steam turbine rotor before the unit is started or when the unit is stopped and inertly rotated to a lower rotating speed, so that serious accidents such as large shaft bending and the like of the steam turbine rotor are prevented, permanent deformation of a shaft system is avoided, and safe and stable operation of the steam turbine is ensured. The turning gear device of the steam turbine comprises a turning actuating mechanism device and a turning control cabinet, and the turning actuating mechanism device is controlled to act to keep continuous turning of the steam turbine rotor through the turning control cabinet before the steam turbine is started or when the steam turbine is stopped.

At present, the turning gear of the steam turbine of the nuclear power plant is mainly purchased from a overseas set, the working state of a control cabinet of the turning gear is unstable, and a series of conditions such as the dead halt of the controller and no alarm information exist after the turning gear of the unit turns on the bus. The spare parts and the technology of the control cabinet are completely limited by foreign factories, domestic users cannot know the operation principle and state of the control cabinet completely, and the failure cause cannot be positioned accurately in time when the control cabinet fails each time, so that a large burden is brought to operators and maintenance personnel of a nuclear power unit.

Therefore, how to provide a jigger control method with excellent stability is a technical problem to be solved in the technical field of steam turbines at present.

Disclosure of Invention

In view of the above, it is necessary to provide a jigger control method, a jigger control system, and a jigger control device that can improve jigger stability.

In a first aspect, the present application provides a control method for jiggers, the method comprising:

under the condition of receiving a jigger starting instruction sent by a main control system of the steam turbine, determining the current rotating speed and jigger rotating speed of the steam turbine, and controlling jigger operation according to the current rotating speed and jigger rotating speed of the steam turbine;

and under the condition that a jigger shutdown instruction sent by the main control system of the steam turbine is received, determining the tripping state of the jigger, and controlling the jigger to stop according to the tripping state.

In one embodiment, controlling turning operation according to a current rotational speed of the steam turbine and a turning rotational speed comprises:

when the current rotating speed of the steam turbine is determined to be a first value, and meanwhile, under the condition that the jigger rotating speed is the first value, the gear of the jigger is controlled to carry out meshing operation, the motor of the jigger is controlled to start, and when a first meshing completion signal fed back by the jigger is received, the jigger is determined to be successfully put into operation.

In one embodiment, the method further comprises:

after the jigger is put into operation, when the current rotating speed of the steam turbine is monitored to be larger than the current rotating speed of the jigger, the jigger is controlled to carry out tripping operation, and when a first tripping completion signal fed back by the jigger is received, the jigger is determined to be tripped successfully.

when the current rotating speed of the steam turbine is determined to be a second numerical value and the turning rotating speed is determined to be a third numerical value, controlling the motor of the turning to start to rotate to a first preset rotating speed, controlling the gear of the turning to perform meshing operation when the second numerical value is determined to be reduced to the first preset rotating speed, and determining that the turning is successfully put into operation when a second meshing completion signal fed back by the turning is received; the third value is less than the second value.

when the current rotating speed of the steam turbine is determined to be a fourth value and the turning rotating speed is determined to be the fourth value, the gears of the turning are controlled to carry out meshing operation, and when a third meshing completion signal fed back by the turning is received, successful turning operation is determined.

In one embodiment, controlling the turning off of the jigger according to the trip status includes:

and under the condition that the tripping state of the jigger is determined to be the tripped state, controlling the motor of the jigger to be closed to carry out the shutdown operation of the jigger.

And under the condition that the tripping state of the jigger is determined to be the non-tripping state, controlling the jigger to carry out tripping operation, and when receiving a second tripping completion signal fed back by the jigger, controlling a motor of the jigger to be closed to carry out shutdown operation of the jigger.

In one embodiment, the method further comprises:

when detecting a fault signal of the jigger, outputting fault alarm information on a control panel; the fault signals comprise rotating speed deviation, non-engagement of the jigger device in a specified time, low rotating speed after the jigger device is started, low rotating speed of a large shaft after the jigger device is started, overtemperature of the liquid level coupler, no instruction for starting the jigger device, and failure of a rotating speed probe when the jigger device is not in place.

In a second aspect, the present application also provides a jigger control system, comprising: the system comprises a jigger control cabinet, a steam turbine main control system, jiggers and a steam turbine; the jigger control cabinet is respectively connected with a main control system of the steam turbine and the jigger, and the main control system of the steam turbine is connected with the steam turbine;

a controller in a jigger control cabinet for executing the jigger control method according to any one of the embodiments of the first aspect.

In a third aspect, the present application also provides a jigger control device, which includes:

The turning-on module is used for determining the current rotating speed and the turning rotating speed of the steam turbine under the condition of receiving a turning-on starting instruction sent by the main control system of the steam turbine and controlling turning-on according to the current rotating speed and the turning rotating speed of the steam turbine;

and the shutdown module is used for determining the tripping state of the jigger under the condition of receiving the jigger shutdown instruction sent by the main control system of the steam turbine and controlling jigger shutdown according to the tripping state.

In a fourth aspect, the present application also provides a computer device. The computer device comprises a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the following steps:

In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:

In a fifth aspect, the present application also provides a computer program product. The computer program product comprising a computer program which, when executed by a processor, performs the steps of:

According to the jigger control method, the jigger control system and the jigger control device, the current rotating speed and the jigger rotating speed of the steam turbine are determined under the condition that a jigger starting instruction sent by the main control system of the steam turbine is received by the controller, and jigger operation is controlled according to the current rotating speed and the jigger rotating speed of the steam turbine; and under the condition that a jigger shutdown instruction sent by the main control system of the steam turbine is received, determining the tripping state of the jigger, and controlling the jigger to stop according to the tripping state. The method realizes the automatic start operation of the jigger under different working conditions of the steam turbine, and controls the jigger to stop operation automatically in the scenes of different working conditions under the tripping state of the jigger, so that the control method can realize the comprehensive control of the jigger, and further improve the stability and safety of jigger control, and not only considers different working conditions during jigger operation, but also considers different working conditions during jigger stopping operation.

Drawings

FIG. 1 is a diagram of a jigger control system of a jigger control method in one embodiment;

FIG. 2 is a flow chart of a method of controlling a jigger in one embodiment;

FIG. 3 is a flow chart of a method of controlling a jigger in another embodiment;

FIG. 4 is a block diagram of a control cabinet of the cart in one embodiment;

FIG. 5 is a block diagram of a control device of the cart in one embodiment;

fig. 6 is an internal structural diagram of a computer device in one embodiment.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

The turbine generator set does work by entering steam into the turbine interstage to push the turbine rotor to rotate, thereby driving the generator rotor to rotate to realize power generation. The nuclear power plant steam turbine is provided with a jigger device which is mainly used for continuously jigging the steam turbine rotor before the unit is started or when the unit is stopped and inertly rotated to a lower rotating speed, so that serious accidents such as large shaft bending and the like of the steam turbine rotor are prevented, permanent deformation of a shaft system is avoided, and safe and stable operation of the steam turbine is ensured. The turning gear device of the steam turbine comprises a turning actuating mechanism device and a turning control cabinet, and the turning actuating mechanism device is controlled to act to keep continuous turning of the steam turbine rotor through the turning control cabinet before the steam turbine is started or when the steam turbine is stopped. The rotor of the nuclear turbine generator has larger weight and larger rotation moment, and various requirements of the turbine generator on the jigger device are also strict, so that the reliability, debugging, operation and maintenance of the turbine generator are also corresponding key points of the nuclear turbine.

Therefore, how to provide a jigger control method with excellent stability is a technical problem to be solved in the technical field of steam turbines at present. The application provides a jigger control method, which aims to solve the technical problems, and the following embodiment specifically describes the jigger control method.

The jigger control method provided by the embodiment of the application can be applied to a jigger control system shown in figure 1, wherein the system comprises a jigger control cabinet 01, a steam turbine main control system 02, jiggers 03 and a steam turbine 04; the jigger control cabinet 01 is respectively connected with a turbine main control system 02 and jiggers 03, and the turbine main control system 02 is connected with a turbine 04. The jigger control cabinet 01 comprises a controller 010, an alarm 011 and other components, wherein the controller 010 is used for controlling the operation and the stop of jiggers, the controller can adopt a programmable logic controller (Programmable Logic Controller, abbreviated as PLC), can also adopt other types of controllers, can also be various personal computers, notebook computers, smart phones, tablet computers and Internet of things equipment, and the type of the controller is not limited in the embodiment; the alarm 011 is used for alarming and prompting abnormal conditions. The main control system 02 of the steam turbine is used for controlling and monitoring the working state of the steam turbine, and managing and regulating the operation of the steam turbine so as to ensure the safe and efficient operation of the system; specifically, the main control system of the steam turbine is a DCS (Distributed Control System, abbreviated as DCS) control system.

It will be appreciated by those skilled in the art that the structure shown in fig. 1 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the jigger control system to which the present inventive arrangements are applied, and that a particular jigger control system may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.

In one embodiment, as shown in fig. 2, a method for controlling a jigger is provided, and the method is applied to the controller 010 in fig. 1 for illustration, and includes the following steps:

s201, under the condition that a jigger starting instruction sent by a main control system of the steam turbine is received, determining the current rotating speed and jigger rotating speed of the steam turbine, and controlling jigger operation according to the current rotating speed and jigger rotating speed of the steam turbine.

The jigger starting instruction is used for indicating the jigger to start operation.

In the embodiment of the application, before a steam turbine main control system sends a starting instruction to a jigger controller, whether other equipment such as a GGR system (a steam turbine lubricating oil system, a top shaft oil system and a jigger system) and auxiliary/accident oil pumps, a smoke exhaust fan, a main disc, an auxiliary disc and the like are normal or not needs to be determined, and equipment needing to work in the whole system needs to be powered on and corresponding controls need to be started. After the early-stage preparation work is finished, the turbine main control system can start a remote jigger starting instruction to the jigger, and the jigger controller can determine the current rotating speed and jigger rotating speed of the turbine under the condition that the jigger starting instruction sent by the turbine main control system is received, and then control jigger starting operation according to the current rotating speed and jigger rotating speed of the turbine. Specifically, the controller can control the turning start operation by controlling the opening of the electromagnetic valve, and can also control the turning start operation by other control switches.

It can be understood that, because different turbine rotational speeds and different jigger rotational speeds can represent the working condition of different jigger works, and the control mode of different working conditions is also different, so the controller can confirm a working condition through confirming the size of the current rotational speed of the turbine and the size of jigger rotational speed, and then carries out different control to this working condition and realizes the control start jigger operation. The working conditions of the jigger operation when the jigger is started to operate comprise the working condition of operation under the static working condition of the steam turbine, the working condition of operation in the process of speed reduction after the steam turbine trips, the working condition of operation in the process of speed reduction after the steam turbine is briefly accelerated, and the like. The working condition of the steam turbine under the static working condition represents the condition of throwing jiggering when the steam turbine needs to be started from the static state; the working condition of operation in the process of reducing the speed after the steam turbine trips represents the condition of throwing jiggers in the process of reducing the speed after the steam turbine fails or is manually tripped; the working condition of putting into operation in the process of reducing the speed after the steam turbine is briefly increased in speed means that the condition of putting into operation again in the process of reducing the speed after the steam turbine is started and the rotating speed of the steam turbine does not reach the expected value after the turning gear is thrown away.

S202, under the condition that a turning off instruction sent by a main control system of the steam turbine is received, determining the tripping state of the turning, and controlling the turning off according to the tripping state.

The jigger stop instruction is used for indicating the jigger to stop operation. The tripped state of the jigger indicates a state that the jigger is thrown away when the turbine does not need to continuously raise the speed after the rotating speed of the turbine is greater than or equal to the rotating speed of the jigger.

In the embodiment of the application, when the jigger needs to be stopped, a remote jigger stopping instruction can be sent to the jigger controller through the steam turbine main control system, and the jigger controller can control the jigger to stop operation after the jigger is tripped if the jigger is not tripped under the condition that the jigger stopping instruction sent by the steam turbine main control system is received. Specifically, the controller may control the turning stop operation by controlling the electromagnetic valve to be closed, and may also control the turning stop operation by controlling other control switches.

It can be understood that, because different tripping states of the jigger can represent different working conditions of jigger work, and the control modes of different working conditions are also different, the controller can determine one working condition by determining the tripping state of the jigger, and further, the working condition is controlled to stop jigger operation in different manners. The working conditions of the jigger when the jigger is stopped to operate comprise the working condition of tripping after the speed of the steam turbine is increased, the working condition of the steam turbine after the jigger is started for a long time, and other working conditions. The working condition of tripping after the speed of the steam turbine is increased represents the condition that when the rotating speed of the steam turbine is larger than the turning rotating speed, turning is not needed any more; the working condition of the steam turbine after long-time turning indicates the condition of automatic stopping or manual stopping turning operation after reaching the preset time.

According to the jigger control method, under the condition that a jigger starting instruction sent by a main control system of a steam turbine is received by a controller, the current rotating speed and jigger rotating speed of the steam turbine are determined, and jigger operation is controlled according to the current rotating speed and jigger rotating speed of the steam turbine; and under the condition that a jigger shutdown instruction sent by the main control system of the steam turbine is received, determining the tripping state of the jigger, and controlling the jigger to stop according to the tripping state. The method realizes the automatic start operation of the jigger under different working conditions of the steam turbine, and controls the jigger to stop operation automatically in the scenes of different working conditions under the tripping state of the jigger, so that the control method can realize the comprehensive control of the jigger, and further improve the stability and safety of jigger control, and not only considers different working conditions during jigger operation, but also considers different working conditions during jigger stopping operation.

In one embodiment, there is further provided a step of controlling the turning gear to be turned on when the turbine is turned on under a stationary condition, where "controlling the turning gear to be turned on according to the current rotation speed and the turning gear in the step S201" includes: when the current rotating speed of the steam turbine is determined to be a first value, and meanwhile, under the condition that the jigger rotating speed is the first value, the gear of the jigger is controlled to carry out meshing operation, the motor of the jigger is controlled to start, and when a first meshing completion signal fed back by the jigger is received, the jigger is determined to be successfully put into operation.

The rotating speed is a first value, which indicates that the steam turbine or the jigger is in a static state, and the first value can be zero or a certain value approaching zero. The first engagement completion signal indicates a signal after the gears are engaged, and can be fed back by the first gear engagement feedback switch.

In the embodiment of the application, before a steam turbine main control system sends a starting instruction to a jigger controller, a steam turbine rotor needs to be determined to be in a static state, and then power is transmitted to other devices such as a GGR system (a steam turbine lubricating oil system, a top shaft oil system and a jigger system), an auxiliary/accident oil pump, a smoke exhaust fan, a main disk, an auxiliary disk and the like. After power transmission is completed, the GGR001KG (sequential control of the lubricating oil system) is put into operation on the interface of the main control system of the steam turbine and started, then the GGR010PO/GGR012PO (alternating-current lubricating oil pump) is further determined to be normally started, a smoke exhaust fan is normally started, the oil level of the lubricating oil tank is normal, the mother pipe pressure of the GGR system is normal, then the GHE system (power generation sealing oil system) can be put into operation, the GGR002KG (sequential control of the power generation sealing oil system) is put into operation and started, and then the normal start of a top shaft oil pump is determined, and the normal top shaft oil pressure is determined. Alternatively, the process can be automatically completed by the main control system of the steam turbine, can be completed by manually clicking on the main control system interface of the steam turbine by an operator, and can be completed by combining the main control system interface of the steam turbine with the actual site by the operator. After the preparation work is finished, the main control system of the steam turbine can send a remote start instruction to the controller of the jigger.

After the controller receives a starting instruction sent by the jigger controller, the current rotating speed and the jigger rotating speed of the steam turbine can be determined, when the current rotating speed and the jigger rotating speed of the steam turbine are both the first numerical values, for example, the current rotating speed and the jigger rotating speed are both 0, the jigger can be further controlled to be meshed through the electromagnetic valve, after the gear reaches primary meshing, the jigger motor can be controlled to be started, the gear is further controlled to be completely meshed, and after the controller receives a first meshing completion signal fed back by a preset gear meshing switch, the jigger can be determined to be successfully put into operation. The controller can also determine that the jigger operation is successful by judging that the rotating speed of the steam turbine is greater than or equal to the rotating speed of the jigger. Optionally, the controller may further control the gear of the jigger to perform the meshing operation by powering on the other switches. Further, when the current rotating speed of the steam turbine and the rotating speed of the jigger are determined to be the first values, the controller can delay for a period of time, and the steam turbine and the jigger are completely ensured to be in a static state. Furthermore, the controller controls the gears of the jigger to carry out meshing operation, and when the initial meshing is achieved, the controller can delay for a period of time, so that the gears are ensured to start to carry out meshing operation.

In the above embodiment, after the rotational speed of the steam turbine and the rotational speed of the jigger are both determined to be the first values, the jigger gear meshing operation is triggered, so that the operation can be ensured when the steam turbine and the jigger are in the static state, the risks of accidental operation and danger are reduced, and the operation safety is improved. In addition, through the operation of the solenoid valve power supply and delay control, the primary engagement and complete engagement operation of the jigger gear can be ensured to be carried out in proper time and state, the error of engagement operation can be reduced, the accurate engagement of the gear is improved, and thus the jigger operation is ensured to be successful.

In one embodiment, there is also provided a control method of a jigger, the method further comprising: after the jigger is put into operation, when the current rotating speed of the steam turbine is monitored to be larger than the current rotating speed of the jigger, the jigger is controlled to carry out tripping operation, and when a first tripping completion signal fed back by the jigger is received, the jigger is determined to be tripped successfully.

The first tripping completion signal represents a signal that the gears are not meshed, and the signal can be fed back by a second gear meshing feedback switch.

In the embodiment of the application, the second gear engagement feedback switch of the jigger can be preset, the controller can monitor the current rotating speed of the steam turbine and the current rotating speed of the jigger in real time after determining that the jigger is put into operation based on the steps, when the current rotating speed of the steam turbine is greater than the current rotating speed of the jigger, the jigger can be controlled to carry out tripping operation, and the jigger can be determined to be successfully tripped when receiving the first tripping completion signal fed back by the second gear engagement feedback switch of the jigger. In the embodiment, the controller can accurately judge the tripping time by monitoring the current rotation speeds of the steam turbine and the jigger in real time, so as to ensure the tripping operation under the proper rotation speed difference, thereby improving the accuracy and the safety of the operation.

In one embodiment, there is further provided a step of controlling turning gear operation in a deceleration process after the steam turbine trips, where "controlling turning gear operation according to a current rotation speed and a turning gear speed" in step S201 includes: when the current rotating speed of the steam turbine is determined to be a second numerical value and the turning rotating speed is determined to be a third numerical value, controlling the motor of the turning to start to rotate to a first preset rotating speed, controlling the gear of the turning to perform meshing operation when the second numerical value is determined to be reduced to the first preset rotating speed, and determining that the turning is successfully put into operation when a second meshing completion signal fed back by the turning is received; the third value is less than the second value.

The second value is a rotational speed during rapid decrease of the rotational speed of the turbine, and may be 1350 or a value approaching 1350. The first preset rotating speed is the rotating speed of the disc vehicle to be driven, and can be 7.3 or a value approaching to 7.3. The jigger rotating speed is a third value which indicates that the jigger is in a static state, and the third value is 0 or a value approaching 0. The first preset rotating speed is the rotating speed of the jigger driving steam turbine, and can be 8 or a value approaching 8. The second engagement completion signal represents a signal after the gears are engaged, and can be fed back by the first gear engagement feedback switch.

In the embodiment of the application, before sending a start command to the controller of the jigger, the main control system of the steam turbine needs to determine that GGR001KG (sequential control of the lubricating oil system), GGR002KG (sequential control of the power generation seal oil system), GGR002KC (first selection module of the oil pump), GGR020KC (second selection module of the oil pump) and other system equipment should all have power transmitted. And then determining that a smoke exhaust fan normally operates and the oil level of the oil tank is normal. When the steam turbine is determined to trip, the GGR010PO/GGR012PO (first alternating current lubricating oil pump/second alternating current lubricating oil pump) is determined to be started normally, and the mother pipe pressure of the GGR system (steam turbine lubricating oil system, top shaft oil system and jigger system) is determined to be normal. When the turbine is decelerated to 1350rpm or so, GGR002KC (sequential control of the power generation seal oil system) is controlled to be automatically put into operation, then a top shaft oil pump is determined to be started, and then the top shaft oil pressure is determined to be normal. Alternatively, the process can be automatically completed by the main control system of the steam turbine, can be completed by manually clicking on the main control system interface of the steam turbine by an operator, and can be completed by combining the main control system interface of the steam turbine with the actual site by the operator. After the preparation work is finished, the main control system of the steam turbine can send a remote start instruction to the controller of the jigger.

After receiving a start command sent by the jigger controller, the controller can determine the current rotating speed and jigger rotating speed of the steam turbine, and when the current rotating speed of the steam turbine is a second value (such as 1350) and the jigger rotating speed is a third value (such as 0), the controller can control the motor of the jigger to start to rotate until reaching a first preset rotating speed (such as 8), and keep the rotating speed, and wait for the steam turbine to rapidly reduce the speed after the jigger is started, so that the steam turbine can not stop very quickly, and the rotor deformation of the steam turbine is avoided. When the rotating speed of the steam turbine is reduced from a second value (such as 1350) to a first preset rotating speed (such as 7.3), the rotating speed of the steam turbine is lower than the turning rotating speed, the turning can be used for turning the steam turbine, the gears of the turning can be controlled to carry out meshing operation, and after the controller receives a first meshing completion signal fed back by a preset first gear meshing switch, the electromagnetic valve or other switches are controlled to be closed, so that the success of turning operation can be determined.

In the above embodiment, by controlling the turning gear to rotate, when the rotational speed of the turbine falls below the turning gear rotational speed, the gear of the turning gear is utilized to perform the meshing operation, so that the speed reduction of the turbine can be further slowed down, additional rotational kinetic energy is provided, and the shutdown process of the turbine can be smoothly controlled.

In one embodiment, there is further provided a step of controlling turning gear operation during a transient speed-up and speed-down of the steam turbine, where "controlling turning gear to stop according to a trip state" in step S202 includes: when the current rotating speed of the steam turbine is determined to be a fourth value and the turning rotating speed is determined to be the fourth value, the gears of the turning are controlled to carry out meshing operation, and when a third meshing completion signal fed back by the turning is received, successful turning operation is determined.

The fourth value of the rotational speed represents a state of loading the turbine with jiggers, and may be 8 or a value approaching 8. The third engagement completion signal represents a signal after the gears are engaged, and can be fed back by the first gear engagement feedback switch.

In the embodiment of the application, before sending a start command to the controller of the jigger, the main control system of the steam turbine needs to determine that GGR001KG (sequential control of the lubricating oil system), GGR002KG (sequential control of the power generation seal oil system), GGR002KC (first selection module of the oil pump), GGR020KC (second selection module of the oil pump) and other system equipment should all have power transmitted. And then determining that GGR010PO/GGR012PO (first alternating-current lubricating oil pump/second alternating-current lubricating oil pump) normally operates, determining that a smoke exhaust fan normally operates, determining that the oil level of an oil tank is normal, and determining that the main pipe pressure of the GGR system (a turbine lubricating oil system, a top shaft oil system and a jigger system) is normal. When the turbine is briefly accelerated and the rotating speed of the turbine is greater than the turning rotating speed, the controller controls the turning to automatically trip, the turning can receive a first trip finishing signal, when the current rotating speed of the turbine is a fourth value (such as 8), the turning is required to drive the turbine to be accelerated to an expected value again, meanwhile, under the condition that the turning rotating speed is the fourth value (such as 8), the gear of the turning can be controlled to carry out meshing operation, and when the controller receives a third meshing finishing signal fed back by a preset first gear meshing switch, the electromagnetic valve or other switches are controlled to be closed, and the success of turning operation can be determined.

In the embodiment, the rotating speed of the steam turbine can be increased to an expected value through the secondary coiling of the jigger, the stable running state of the steam turbine is recovered, the work within the preset rotating speed range is kept, the jigger and the steam turbine can be effectively coordinated and matched, and the reliability and the continuous running of the system are ensured.

In one embodiment, there is further provided a step of controlling shutdown of a jigger by tripping after a turbine is up-speed, where "controlling shutdown of jigger according to a tripped state" in step S202 includes: and under the condition that the tripping state of the jigger is determined to be the tripped state, controlling the motor of the jigger to be closed to carry out the shutdown operation of the jigger.

In the embodiment of the application, the controller monitors the rotating speed of the steam turbine in real time, and when the controller monitors that the rotating speed of the steam turbine exceeds the turning rotating speed and continues to rise, the controller controls the turning to automatically trip. When the controller receives a first trip completion signal fed back by the second gear engagement feedback switch, namely, the tripped state of the jigger is the tripped state, and when the main control system of the steam turbine monitors that the speed of the steam turbine rises to exceed a second value (such as 1350), the main control system of the steam turbine can send jigger stopping instructions, and after receiving the jigger stopping instructions, the controller can control the motor to stop and further control jigger stopping. After the turning gear is stopped, the gas turbine main control system automatically or manually stops GGR002KC (first selection module of oil pump), the gas turbine main control system automatically or manually stops the top shaft oil pump, and the gas turbine main control system automatically or manually controls GGR010PO/GGR012PO (first alternating current lubricating oil pump/second alternating current lubricating oil pump).

In the embodiment, under the condition of tripping after the turbine is accelerated, the controller controls the shutdown of the jigger according to the main control remote shutdown instruction, so that the turbine can be safely stopped when the turbine is required to be stopped in the operation process of the turbine, and the risk in the stopping process is reduced. And when the jigger is not needed, the jigger can be stopped, so that the abrasion and the service time of the jigger and related equipment can be reduced, and the maintenance cost can be reduced. In addition, off-line lubrication systems also extend the useful life of the lubrication oil and lubrication components.

In an example, there is further provided a step of controlling shutdown of a jigger after a long-time jigger of a steam turbine, where "controlling shutdown according to a trip state" in the step S202 includes: and under the condition that the tripping state of the jigger is determined to be the non-tripping state, controlling the jigger to carry out tripping operation, and when receiving a second tripping completion signal fed back by the jigger, controlling a motor of the jigger to be closed to carry out shutdown operation of the jigger.

The second trip completion signal represents a signal that the gears are not meshed, and the signal can be fed back by a second gear meshing feedback switch.

In the embodiment of the application, when the steam turbine main control system determines that the tripping state of the jigger is the non-tripping state, the steam turbine main control system sends a remote shutdown jigger instruction to the jigger through GGR002KG (first selection module of an oil pump), and the controller controls the jigger to automatically trip after receiving the shutdown jigger instruction. When the controller receives a second tripping completion signal fed back by the second gear meshing feedback switch, namely, under the condition that the tripping state of the jigger is the tripped state, the motor of the jigger is controlled to stop running. When the main control system of the steam turbine monitors that the rotor of the steam turbine is in a down-speed state to be in a static state, the oil pump of the top shaft is controlled to stop running, the lubricating oil system is stopped through GGR001KG (sequential control of the lubricating oil system), the GGR010PO/GGR012PO (first alternating-current lubricating oil pump/second alternating-current lubricating oil pump) is controlled to stop running remotely, and the automatic stop of the smoke exhaust fan is controlled to be carried out for a preset time (such as 1 hour). Furthermore, when the controller controls the automatic tripping operation of the jigger, the controller can delay for a period of time, so that the jigger is ensured to complete the automatic tripping operation completely.

In the above embodiment, when the controller determines that the tripped state of the jigger is the un-tripped state, the controller firstly controls the jigger to perform the tripping operation and then stops the jigger to operate, so that the steam turbine can be safely stopped, and the risk in the stopping process is reduced. In addition, other systems such as off-line lubrication oil systems and overhead oil systems can also extend the useful life of these systems.

In one embodiment, there is also provided a control method of a jigger, the method further comprising: and outputting fault alarm information on the control panel when a fault signal of the jigger is detected.

The fault signals comprise rotating speed deviation of the jigger, non-engagement of the jigger in a specified time, low rotating speed after the jigger is started, low rotating speed of a large shaft after the jigger is started, overtemperature of a liquid level coupler in the jigger, no instruction for starting the jigger, non-disengagement of the jigger in place and fault of a rotating speed probe of the jigger.

In the embodiment of the application, the alarm can be arranged on the control cabinet in advance, and when the controller detects the fault signal of the jigger, for example, when the corresponding signal is not detected in the preset time in the previous step, the fault alarm information can be output on the control panel of the control cabinet. Specifically, different alarm lamps or acousto-optic alarm lamps can be set according to different conditions, and different alarm lamps or acousto-optic alarm lamps can be set according to different fault types. In addition, the controller can also realize a fail safe (FAILSAFE) function, namely, the jigger can be controlled to automatically trip under the fault state, and the function of placing the system in a safe state is realized. Specifically, after the controller is powered off and the motor is stopped, the jigger is controlled to automatically trip, and in practical application, the FAILSAFE state is equal to the state before the initial operation.

In the embodiment, the fault alarm information is output on the control panel, so that related faults of the jigger can be found, positioned and processed in time, accidents are avoided, the reliability and the safety of equipment are improved, and the stable operation of the system is ensured.

In summary, all the embodiments above also provide a jigger control method, as shown in fig. 3, including:

s301, under the condition that a jigger starting instruction sent by a main control system of the steam turbine is received, determining the current rotating speed and jigger rotating speed of the steam turbine.

S302, when the current rotating speed of the steam turbine is determined to be a first value, and meanwhile, under the condition that the jigger rotating speed is the first value, the gear of the jigger is controlled to carry out meshing operation, the motor of the jigger is controlled to start, and when a first meshing completion signal fed back by the jigger is received, the jigger is determined to be successfully put into operation.

S303, when the current rotating speed of the steam turbine is determined to be a second numerical value, and meanwhile, the turning rotating speed is determined to be a third numerical value, the motor of the turning is controlled to start to rotate to a first preset rotating speed, when the second numerical value is determined to be reduced to the first preset rotating speed, the gear of the turning is controlled to perform meshing operation, and when a second meshing completion signal fed back by the turning is received, the turning is determined to be successful in operation; the third value is less than the second value.

S304, when the current rotating speed of the steam turbine is determined to be a fourth value, and meanwhile, under the condition that the turning rotating speed is the fourth value, the gears of the turning are controlled to carry out meshing operation, and when a third meshing completion signal fed back by the turning is received, successful turning operation is determined.

S305, after the jigger is put into operation, when the current rotating speed of the steam turbine is monitored to be larger than the current rotating speed of the jigger, the jigger is controlled to carry out tripping operation, and when a first tripping completion signal fed back by the jigger is received, the jigger is determined to be tripped successfully.

S306, under the condition that a jigger shutdown instruction sent by the main control system of the steam turbine is received, determining the tripping state of jiggers.

S307, controlling the motor of the jigger to be closed to stop operation of the jigger under the condition that the tripped state of the jigger is determined to be the tripped state.

And S308, controlling the jigger to carry out tripping operation under the condition that the tripping state of the jigger is determined to be the non-tripping state, and controlling the motor of the jigger to be closed to carry out the shutdown operation of the jigger when receiving a second tripping completion signal fed back by the jigger.

S309, outputting fault alarm information on a control panel when a fault signal of the jigger is detected; the fault signals comprise rotating speed deviation of the jigger, non-engagement of the jigger in a specified time, low rotating speed after the jigger is started, low rotating speed of a large shaft after the jigger is started, overtemperature of a liquid level coupler in the jigger, no instruction for starting the jigger, non-disengagement of the jigger in place and fault of a rotating speed probe of the jigger.

The method of each step is described in the foregoing embodiments, and the detailed description is referred to the foregoing description and is not repeated here.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides a jigger control system, as shown in fig. 1, which comprises: the system comprises a jigger control cabinet, a steam turbine main control system, jiggers and a steam turbine; the jigger control cabinet is respectively connected with a main control system of the steam turbine and the jigger, and the main control system of the steam turbine is connected with the steam turbine; and the controller in the jigger control cabinet is used for executing the jigger control method according to any embodiment. As shown in fig. 4, the jigger control cabinet may include a PLC controller and a touch screen HMI, wherein the touch screen may be used to display operating state information (e.g., jigger generator rotational speed information) and alarm information of the jigger. In addition, a user can locally control the operation of starting and stopping the operation of the jigger through a touch screen on the controller, and parameter modification can be performed through a display page of the touch screen. Because the input and output are digital signals and the number of points is not large, the most basic model can be used, and the most optimal is the Siemens S7-200 SMART ST20 type PLC matched Siemens 700IE V3 type 7 inch touch screen.

The electric hand drill on-site perforating installation button and the alarm can be used for realizing the alarm function (the alarm can be represented by BJI in fig. 4) on the jigger control cabinet, other indicator lamps can be arranged, various electric components can be installed in the box by using the electric guide rail, and particularly, various electric components can be connected by using a red-blue multi-core copper wire with the length of 1mm < 2 >. Wherein HR1 is a power supply indicator lamp, HO1 is an alarm indicator lamp, HG1 is a remote signal indicator lamp, HG2 is an electromagnetic valve electrified indicator lamp, HG3 is a motor heater operation indicator lamp, and HG4 is a motor start indicator lamp; BSI may represent a reset button and QSI may represent a power button.

In the embodiment of the application, the controller is matched with the touch screen to provide an intuitive graphical interface, the touch screen can display and monitor the state information or the alarm information of the jigger in real time, thereby being beneficial to timely finding out problems and adjusting parameters and improving the visualization and the controllability of the production process. Secondly, a user can control the start-stop operation of the main jigger through the touch screen without going to the field operation, so that the safety is improved, and meanwhile, the corresponding parameters can be modified through the touch screen to realize flexible control and configuration. In addition, the user can complete the required operation through simple touch, click, drag and other interaction modes on the touch screen, and compared with the traditional control modes such as buttons, switches, knobs and the like, the operation of the touch screen is more direct and efficient, and the operation efficiency and the working efficiency can be greatly improved.

It should be noted that, this embodiment only provides a structure of a jigger control cabinet, where positions of other lamps such as an indicator lamp and an alarm on the jigger control cabinet are not limited in this embodiment, and numbers of other lamps such as the indicator lamp and the alarm are not limited in this embodiment, and specific positions and numbers can be set according to actual requirements. In addition, in this embodiment, the content displayed on the touch screen of the controller is not limited, and the content to be displayed specifically may be set according to actual requirements. The implementation scheme for solving the problem provided by the jigger control system is similar to the implementation scheme recorded in the method, and is not repeated here.

According to the system, the matched jigger control cabinet is automatically researched and developed, the on-site operation and maintenance personnel can completely master the control logic in the control cabinet, the control logic is further optimized and updated through the problems found in the actual use process, the control cabinet is failed, the control cabinet can also be processed in a component replacement mode, the follow-up updating and reforming space is large, the safety quality level is high, and the follow-up operation and maintenance cost is greatly reduced. Moreover, the domestic replacement of the main jigger control cabinet of the steam turbine of the nuclear power plant can be realized, the subsequent operation and maintenance cost is reduced, the operation level and the safety quality capability are improved, the update and reconstruction lifting space of the continuous equipment is large, and on-site operation and maintenance personnel can completely master the control logic in the control cabinet, so that the maintenance period can be greatly shortened, and the fault elimination response level is improved. Meanwhile, the jigger control cabinet also has the functions of running state indication and on-site jigger starting and stopping. The novel control cabinet is very beneficial to the subsequent upgrading transformation of equipment, improves the understanding and grasp of the equipment control process, and greatly improves the running level and the safety quality state of the equipment.

Based on the same inventive concept, the embodiment of the application also provides a jigger control device for realizing the jigger control method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of the control device for one or more jiggers provided below may be referred to the limitation of the control method for jiggers hereinabove, and will not be described herein.

In one embodiment, as shown in fig. 5, there is provided a jigger control device, comprising:

and the operation module 10 is used for determining the current rotating speed and the turning rotating speed of the steam turbine under the condition of receiving the turning start instruction sent by the main control system of the steam turbine, and controlling turning operation according to the current rotating speed and the turning rotating speed of the steam turbine.

And the shutdown module 11 is used for determining the tripping state of the jigger under the condition of receiving the jigger shutdown instruction sent by the main control system of the steam turbine and controlling jigger shutdown according to the tripping state.

In one embodiment, the commissioning module 10 is specifically configured to control the gear of the jigger to perform the meshing operation and control the motor of the jigger to start when the current rotation speed of the steam turbine is determined to be a first value and the jigger rotation speed is determined to be the first value, and determine that the jigger commissioning is successful when receiving the first meshing completion signal fed back by the jigger

In one embodiment, the jigger control device further comprises:

the determining module is used for controlling the jigger to carry out tripping operation when the current rotating speed of the steam turbine is monitored to be larger than the current rotating speed of the jigger after the jigger is put into operation, and determining that the jigger is tripped successfully when a first tripping completion signal fed back by the jigger is received.

In one embodiment, the operation module 10 is specifically configured to control, when it is determined that the current rotation speed of the steam turbine is a second value and the turning rotation speed is a third value, start the motor of the turning to rotate to a first preset rotation speed, control the gear of the turning to perform the meshing operation when it is determined that the second value is reduced to the first preset rotation speed, and determine that the turning operation is successful when a second meshing completion signal fed back by the turning is received; the third value is less than the second value.

In one embodiment, the commissioning module 10 is specifically configured to control the gear of the jigger to perform the meshing operation when it is determined that the current rotation speed of the steam turbine is the fourth value and the jigger rotation speed is the fourth value, and determine that the jigger commissioning is successful when receiving the third meshing completion signal fed back by the jigger.

In one embodiment, the shutdown module 11 is specifically configured to control the motor of the jigger to be turned off to perform the shutdown operation of the jigger when the tripped state of the jigger is determined to be the tripped state.

In one embodiment, the shutdown module 11 is specifically configured to control the jigger to perform the trip operation when determining that the trip state of the jigger is an un-trip state, and control the motor of the jigger to be turned off to perform the shutdown operation of the jigger when receiving the second trip completion signal fed back by the jigger.

In one embodiment, the jigger control device further comprises:

the alarm module is used for outputting fault alarm information on the control panel when a fault signal of the jigger is detected; the fault signals comprise rotating speed deviation of the jigger, non-engagement of the jigger in a specified time, low rotating speed after the jigger is started, low rotating speed of a large shaft after the jigger is started, overtemperature of a liquid level coupler in the jigger, no instruction for starting the jigger, non-disengagement of the jigger in place and fault of a rotating speed probe of the jigger.

The above-mentioned individual modules in the jigger control device may be realized in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In one embodiment, a computer device is provided, which may be a terminal, and the internal structure of which may be as shown in fig. 5. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input/output interface. Wherein 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 and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program, when executed by the processor, implements a method of controlling a jigger. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the structure shown in FIG. 5 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.

In one embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:

In one embodiment, the processor when executing the computer program further performs the steps of:

when detecting a fault signal of the jigger, outputting fault alarm information on a control panel; the fault signals comprise rotating speed deviation of the jigger, non-engagement of the jigger in a specified time, low rotating speed after the jigger is started, low rotating speed of a large shaft after the jigger is started, overtemperature of a liquid level coupler in the jigger, no instruction for starting the jigger, non-disengagement of the jigger in place and fault of a rotating speed probe of the jigger.

In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:

In one embodiment, the computer program when executed by the processor further performs the steps of:

In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. A method of controlling a jigger, the method comprising:

under the condition of receiving a jigger starting instruction sent by a main control system of a steam turbine, determining the current rotating speed and jigger rotating speed of the steam turbine, and controlling jigger operation according to the current rotating speed and jigger rotating speed of the steam turbine;

and under the condition that a jigger shutdown instruction sent by the steam turbine main control system is received, determining the tripping state of the jigger, and controlling the jigger shutdown according to the tripping state.

2. The method of claim 1, wherein the controlling the turning gear operation according to the current rotational speed of the steam turbine and the turning gear rotational speed comprises:

when the current rotating speed of the steam turbine is determined to be a first value, and meanwhile, under the condition that the rotating speed of the jigger is the first value, the gear of the jigger is controlled to carry out meshing operation, the motor of the jigger is controlled to start, and when a first meshing completion signal fed back by the jigger is received, the jigger is determined to be successfully put into operation.

3. The control method of a jigger as claimed in claim 2, characterized in that the method further comprises:

after the jigger is put into operation, when the current rotating speed of the steam turbine is monitored to be larger than the current rotating speed of the jigger, the jigger is controlled to carry out tripping operation, and when a first tripping completion signal fed back by the jigger is received, the jigger is determined to be successfully tripped.

4. A jigger control method according to any one of claims 1 to 3, characterized in that the controlling jigger operation in accordance with the current rotational speed of the steam turbine and jigger rotational speed comprises:

when the current rotating speed of the steam turbine is determined to be a second numerical value, and the rotating speed of the jigger is determined to be a third numerical value, controlling a motor of the jigger to start to rotate to a first preset rotating speed, controlling gears of the jigger to perform meshing operation when the second numerical value is determined to be reduced to the first preset rotating speed, and determining that the jigger is put into operation successfully when a second meshing completion signal fed back by the jigger is received; the third value is less than the second value.

5. A jigger control method according to any one of claims 1 to 3, characterized in that the controlling jigger operation in accordance with the current rotational speed of the steam turbine and jigger rotational speed comprises:

when the current rotating speed of the steam turbine is determined to be a fourth value, and meanwhile, the jigger rotating speed is controlled to be the fourth value, the gears of the jigger are controlled to carry out meshing operation, and when a third meshing completion signal fed back by the jigger is received, the jigger is determined to be successfully put into operation.

6. The method of claim 1, wherein the controlling the turning off according to the trip status comprises:

7. The method of claim 1, wherein the controlling the turning off according to the trip status comprises:

and under the condition that the tripping state of the jigger is determined to be the non-tripping state, controlling the jigger to carry out tripping operation, and when a second tripping completion signal fed back by the jigger is received, controlling a motor of the jigger to be closed to carry out shutdown operation of the jigger.

8. The control method of a jigger as claimed in claim 1, characterized in that the method further comprises:

outputting fault alarm information on a control panel when the fault signal of the jigger is detected; the fault signals comprise rotating speed deviation of the jigger, non-meshing of the jigger in a specified time, low rotating speed after the jigger is started, low rotating speed of a large shaft after the jigger is started, overtemperature of a liquid level coupler in the jigger, non-instruction starting of the jigger, non-disconnection of the jigger in place and rotating speed probe fault of the jigger.

9. A jigger control system, the system comprising: the system comprises a jigger control cabinet, a steam turbine main control system, jiggers and a steam turbine; the jigger control cabinet is respectively connected with the steam turbine main control system and the jigger, and the steam turbine main control system is connected with the steam turbine;

a controller in the jigger control cabinet for executing the jigger control method according to any one of claims 1-7.

10. A jigger control device, characterized in that the device comprises:

the system comprises a commissioning module, a starting module and a starting module, wherein the commissioning module is used for determining the current rotating speed and the jigger rotating speed of a steam turbine under the condition of receiving jigger starting instructions sent by a main control system of the steam turbine, and controlling jigger commissioning according to the current rotating speed and the jigger rotating speed of the steam turbine;

And the shutdown module is used for determining the tripping state of the jigger under the condition of receiving the jigger shutdown instruction sent by the main control system of the steam turbine and controlling the jigger to be shut down according to the tripping state.