CN110847986B - Start-stop lifting load control method and device for two-driving-one gas turbine combined cycle unit - Google Patents
Start-stop lifting load control method and device for two-driving-one gas turbine combined cycle unit Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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Abstract
The invention provides a method and a device for controlling the start-stop lifting load of a two-drive-one gas turbine combined cycle unit, wherein the method comprises the following steps: obtaining a signal that the starting and stopping conditions of a gas turbine meet, wherein the gas turbine comprises a first gas turbine and a second gas turbine in a two-in-one gas turbine combined cycle unit; acquiring a fuel machine lifting load condition satisfying signal according to the fuel machine starting and stopping condition satisfying signal; obtaining a signal that the automatic state switching condition of the manual operation station of the gas turbine meets according to the signal that the lifting load condition of the gas turbine meets; and controlling the load lifting of the gas turbine in the starting and stopping process according to the signal that the load lifting condition of the gas turbine meets the signal and the signal that the automatic state of the gas turbine manual operation station meets the stopping condition of the gas turbine meets the signal. The invention can realize the lifting load control in the starting and stopping process of the two-driving-one gas turbine combined cycle unit, and has high efficiency and high accuracy.
Description
Technical Field
The invention relates to start-stop control of a two-drag-one gas turbine combined cycle unit, in particular to a method and a device for controlling the lifting load of the start-stop process of the two-drag-one gas turbine combined cycle unit.
Background
With the increase of load and the increase of the scale of the power grid, the requirement on the peak regulation capacity of a gas turbine unit is more strict in the new potential of the interconnection of the extra-high voltage power grid and the large-area power grid, so that the load lifting frequency of the gas turbine unit is continuously improved. In order to meet peak regulation requirements and improve the flexibility of the unit, the thermal control automatic adjustment in the load lifting process of the unit needs to be further optimized.
The unit Start-stop control method (APS) is a System for realizing automation of the unit Start-up and stop processes, and has the advantages of improving the correctness and normalization of the unit Start-stop, greatly reducing the working intensity of operators, shortening the unit Start-stop time and improving the automation level of the unit as a whole. However, in the APS implementation process, certain process conditions and certain flow sequences are often required to be met in the unit starting, stopping or load lifting process, the process is often completed by operators, the time cost is high, and the difference exists between the flexibility and the rapidity of unit operation and the actual requirement.
Therefore, how to better meet the requirements of a power grid, the deep fast peak regulation task of the gas turbine unit is completed in a standardized manner, the more intelligent APS design concept is realized, the operation level of the unit is improved, the automatic, efficient and stable completion of the unit lifting load process is not only the requirements of numerous newly-built gas power plants in recent years, but also has profound significance for ensuring the safe, stable and economic operation of a power system.
The common configuration of the two-drive-one gas turbine combined cycle unit is 2 gas turbine generator units +2 super exhaust heat boilers +1 steam turbine generator unit, in order to ensure the stable and safe operation of the two-drive-one gas turbine combined cycle unit, the practical use of APS becomes the most urgent and necessary, and APS is used as a main operation tool for daily unit operation in many power plants, and a good effect is achieved.
The existing APS main framework calls the lower function group and the function subgroup sequential control logic for the upper framework logic so as to call the control mode of the single equipment logic. The method realizes the judgment of the starting operation conditions and the automatic start-stop of the main equipment and the auxiliary equipment of the unit through the sequence control logic, and for the process control, the sequence control logic can automatically change the adjustment parameters along with the change of the process quantity, so that the unit is executed according to the design requirements of the sequence control logic in the start-stop process.
Due to the diversity of the operation modes of the two-in-one combined cycle unit, various operation conditions such as two-in-one starting, one-in-one starting and the like exist, and the breakpoint setting positions of starting and stopping of the APS are required to be determined.
Generally, breakpoints in the past APS design process mainly include:
and (4) starting breakpoint design (starting point is the starting of the circulating water system, and ending point is the completion of the whole set of the two-dragging-one-steam system).
The APS starts to set 7 breakpoints as follows: 1) preparing APS public system starting; 2) feeding water to the waste heat boiler; 3) starting and grid-connection of a first combustion engine (coordination is already put into the combustion engine when the combustion engine is started, and the load is automatically increased by matching with an ATC (air turbine controller); 4) starting a steam turbine; 5) the steam turbine set is connected to the grid; 6) starting and connecting the second combustion engine to the grid; 7) and the steam and expansion load.
The APS shutdown sets 5 breakpoints as follows: 1) the first gas turbine reduces load and withdraws steam; 2) splitting and turning a first combustion engine; 3) the second combustion engine reduces the load; 4) splitting and turning the steam turbine set; 5) and the second combustion engine is disconnected and turned into a vehicle.
This in-process contains the unit lift load process, in APS design in the past, needs the operation personnel to carry out artificial intervention according to actual conditions, and the whole factory opens and stops the process breakpoint more, has also caused the efficiency of a key start-stop relatively poor.
The existing APS realizes that the effect of designing a lifting load stage is poor, the distance between the existing APS and a target of starting and stopping the APS by one key in the whole course is small, and more artificial intervention points directly influence the operation efficiency.
The specific steps of the load control strategy in the existing APS starting process are as follows:
(1) after the first combustion engine is started, determining a target load according to the temperature (cold state, warm state and hot state) of a cylinder of the engine:
(2) in a one-driving-one cold-state starting mode, after the steam turbine is put into pressure control, the steam turbine operates normally, after the stress is normal, the gas turbine is heated to 90MW for 50 minutes and then continuously heated to 160MW, and the APS is ended;
(3) under a two-in-one cold-state starting mode, after a steam turbine is put into pressure control, the load of the steam turbine is kept unchanged, the load of a second steam turbine tracks the first steam turbine after starting, after the second steam turbine completes steam combination, the two steam turbines synchronously load each 90MW to warm up for 50 minutes and then add to 160MW, and APS is finished;
(4) under a one-driving-one temperature state starting mode, after the steam turbine is put into pressure control, the steam turbine operates normally, after stress is normal, the gas turbine keeps warming up for 40 minutes at 90MW and then continues to be heated to 160MW, and APS is ended;
(5) under the two-in-one temperature state starting mode, after the steam turbine is connected to the grid, the load of the first gas turbine is kept unchanged, the completion of the steam connection of the second gas turbine is waited, meanwhile, the warming-up time of the steam turbine reaches more than 40 minutes, the load is increased to 160MW, and the APS is completed; the second combustion engine always tracks the load of the first combustion engine (can set deviation value adjustment);
(6) under a two-in-one thermal state starting mode, after the steam turbine is connected to the power grid, the gas turbine keeps 120MW load unchanged, and steam is mixed; after the steam engine is warmed up for 30 minutes, the load is continuously increased to 160 MW.
In the unit load change process, the process conditions and the load setting are all completed manually, the operation personnel are operated more due to the fact that excessive conditions need to be confirmed, the unit starting and stopping efficiency is reduced, meanwhile, misoperation is easily caused during the process, and certain hidden dangers exist in unit safety.
Disclosure of Invention
The embodiment of the invention provides a method for controlling the lifting load of starting and stopping a two-drag-one gas turbine combined cycle unit, which is used for realizing the lifting load control in the starting and stopping processes of the two-drag-one gas turbine combined cycle unit and has high efficiency and high accuracy, and the method comprises the following steps:
obtaining a signal that the starting and stopping conditions of a gas turbine meet, wherein the gas turbine comprises a first gas turbine and a second gas turbine in a two-in-one gas turbine combined cycle unit;
acquiring a fuel machine lifting load condition satisfying signal according to the fuel machine starting and stopping condition satisfying signal;
obtaining a signal that the automatic state switching condition of the manual operation station of the gas turbine meets according to the signal that the lifting load condition of the gas turbine meets;
and controlling the load lifting of the gas turbine in the starting and stopping process according to the signal that the load lifting condition of the gas turbine meets the signal and the signal that the automatic state of the gas turbine manual operation station meets the stopping condition of the gas turbine meets the signal.
The embodiment of the invention provides a two-drag-one gas turbine combined cycle unit start-stop lifting load control device, which is used for realizing the lifting load control in the start-stop process of the two-drag-one gas turbine combined cycle unit and has high efficiency and high accuracy, and the device comprises:
the first signal acquisition module is used for acquiring signals meeting the starting and stopping conditions of a combustion engine, wherein the combustion engine comprises a first combustion engine and a second combustion engine in a two-in-one combustion engine combined cycle unit;
the first signal acquisition module is used for acquiring a signal meeting the lifting load condition of the gas turbine according to the signal meeting the starting and stopping conditions of the gas turbine;
the third signal acquisition module is used for acquiring signals meeting the automatic state switching condition of the manual operation station of the combustion engine according to the signals meeting the lifting load condition of the combustion engine;
and the control module is used for controlling the load lifting of the gas turbine in the starting and stopping process according to the signal meeting the load lifting condition of the gas turbine and the signal meeting the automatic state switching condition of the manual gas turbine station.
In the embodiment of the invention, a signal that the starting and stopping conditions of the combustion engine meet is obtained, wherein the combustion engine comprises a first combustion engine and a second combustion engine in a two-in-one combustion engine combined cycle unit; acquiring a fuel machine lifting load condition satisfying signal according to the fuel machine starting and stopping condition satisfying signal; obtaining a signal that the automatic state switching condition of the manual operation station of the gas turbine meets according to the signal that the lifting load condition of the gas turbine meets; and controlling the load lifting of the gas turbine in the starting and stopping process according to the signal that the load lifting condition of the gas turbine meets the signal and the signal that the automatic state of the gas turbine manual operation station meets the stopping condition of the gas turbine meets the signal. In the embodiment of the invention, manual operation is not needed, and the load lifting in the starting and stopping process of the gas turbine is controlled only according to the condition meeting signal of the load lifting condition of the gas turbine and the condition meeting signal of the automatic state switching condition of the manual station of the gas turbine, so that the efficiency is improved, and because the manual participation is less, the misoperation can be reduced, and the control efficiency of the load lifting is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
FIG. 1 is a flowchart of a start-stop lifting load control method of a two-drive-one combustion engine combined cycle unit in an embodiment of the invention;
2-5 are logic diagrams for obtaining a signal that a start-stop condition of a combustion engine satisfies in an embodiment of the invention;
6-8 are logic diagrams for obtaining a signal indicating that the lift load condition of the combustion engine is satisfied in an embodiment of the present invention;
FIG. 9 is a logic diagram for obtaining a signal that the automatic state input condition of the manual operation station of the combustion engine meets the requirement in the embodiment of the invention;
FIG. 10 is a flowchart illustrating a load-up control in a one-to-one unit start mode according to an embodiment of the present invention;
FIG. 11 is a logic diagram for obtaining a combustion engine load up trigger signal and a combustion engine load down trigger signal in an embodiment of the present invention;
FIG. 12 is a flowchart illustrating a load-up control in a two-in-one unit start mode according to an embodiment of the present invention;
FIG. 13 is a flowchart illustrating an exemplary embodiment of the present invention for controlling a load reduction of a combustion engine without steam extraction;
FIG. 14 is a flow chart illustrating control of load shedding of the combustion engine during steam stripping in an embodiment of the present invention;
fig. 15 is a schematic diagram of a start-stop lifting load control device of a two-drive-one combustion engine combined cycle unit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Load control is the ultimate goal of implementing group level APS to ensure that AGC functions are put into operation as early as possible. The load control process mainly comprises the step of matching the initial grid connection exit temperature of the unit to the point that the unit has uninterrupted load increasing load. The difficulty of the control link lies in the automatic realization of the satisfaction of all conditions of the system. In the initial stage of grid connection, the unit cannot lift the load at will, and various judgment conditions can be met after the influence of many characteristics of the unit is needed.
According to the design scheme and the actual effect of the conventional APS, the method belongs to a weak link in the aspect of automatic control of a unit lifting load processing stage, and directly results in the actual operation effect of the APS.
Fig. 1 is a flowchart of a start-stop load lifting control method for a two-drive-one combustion engine combined cycle unit in an embodiment of the present invention, and as shown in fig. 1, the method includes:
101, obtaining a signal that the starting and stopping conditions of a combustion engine meet, wherein the combustion engine comprises a first combustion engine and a second combustion engine in a two-drive-one combustion engine combined cycle unit;
102, acquiring a signal meeting the lifting load condition of the gas turbine and a signal meeting the automatic state switching condition of the gas turbine manual operation station according to the signal meeting the starting and stopping conditions of the gas turbine;
103, acquiring an automatic state switching-on/off condition satisfaction signal of the manual operation station of the gas turbine according to the lifting load condition satisfaction signal of the gas turbine;
and 104, controlling the load lifting of the gas turbine in the starting and stopping process according to the signal meeting the load lifting condition of the gas turbine and the signal meeting the automatic state switching condition of the manual station of the gas turbine.
In the embodiment of the invention, manual operation is not needed, and the load lifting in the starting and stopping process of the gas turbine is controlled only according to the condition meeting signal of the load lifting condition of the gas turbine and the condition meeting signal of the automatic state switching condition of the manual station of the gas turbine, so that the efficiency is improved, and because the manual participation is less, the misoperation can be reduced, and the control efficiency of the load lifting is improved.
In one embodiment, the engine start-stop condition satisfaction signal comprises at least one of the following condition satisfaction signals for the first or second combustion engine: the starting condition of the first gas turbine is a signal which is met by the starting condition, the starting condition of the second gas turbine is a signal which is met by the starting condition, the stopping condition under the steam-removing condition is a signal which is met by the stopping condition, and the stopping condition is a signal which is met by the stopping condition;
the automatic state switching on and off condition satisfaction signal of the combustion engine manual operation station comprises one of the following condition satisfaction signals of a first combustion engine or a second combustion engine: the automatic state input condition of the manual operation station meets the signal, and the automatic state exit condition of the manual operation station meets the signal;
the combustion engine lifting load condition satisfaction signal comprises one of the following condition satisfaction signals of the first combustion engine or the second combustion engine: the first start initial load increasing condition meets the signal, the second start initial load increasing condition meets the signal, and the load reducing condition meets the signal.
Fig. 2 to 5 are logic schematic diagrams of obtaining a signal for satisfying the start-stop condition of the combustion engine in the embodiment of the present invention, and as shown in fig. 2 to 5, the first combustion engine is taken as an example, and a process of obtaining the signal for satisfying the start-stop condition of the first combustion engine, the signal for satisfying the start-stop condition of the second combustion engine, the signal for satisfying the stop condition under the condition of steam stripping of the first combustion engine, and the signal for satisfying the stop condition of the first combustion engine is given. The process of obtaining the other 4 start-stop condition satisfaction signals of the second combustion engine is similar to that of fig. 2-5, and is not repeated here.
Fig. 6 to 8 are logic schematic diagrams of obtaining a lift load condition satisfaction signal of a combustion engine in an embodiment of the present invention, as shown in fig. 6 to 8, the lift load condition satisfaction signal of the combustion engine includes a load increase condition satisfaction signal of a first combustion engine, a load increase condition satisfaction signal of a second combustion engine, and a load decrease condition satisfaction signal of the first combustion engine, and meanwhile, fig. 6 to 8 also show a start initial load increase condition satisfaction signal of a plurality of first combustion engines and a start initial load increase condition satisfaction signal of a plurality of second combustion engines. The process of obtaining the lifting load condition satisfaction signal of the other combustion engines taking the second combustion engine as an example is similar to that of fig. 6-8, and is not repeated here.
Fig. 9 is a logic diagram for obtaining an automatic state input condition satisfaction signal of a manual operation station of a combustion engine in an embodiment of the present invention, and as shown in fig. 9, for example, a first combustion engine obtains a load manual operation device automatic input condition satisfaction signal of the first combustion engine according to a load increase condition satisfaction signal of the first combustion engine, a load decrease condition satisfaction signal of the first combustion engine, an initial load increase condition satisfaction signal of the first combustion engine as a second start of the first combustion engine, and other conditions. The process of obtaining the signal that the automatic input condition of the load manual operator of the second combustion engine meets the signal and the signal that the automatic exit condition of the load manual operator of the first combustion engine or the second combustion engine meets the signal is similar to that in fig. 9, and is not described again here.
In one embodiment, controlling the load of the combustion engine to rise and fall in the starting and stopping process according to the condition that the load of the combustion engine rises and falls and the condition that the automatic state of the manual station of the combustion engine is put on and off and meets signals comprises the following steps:
if the two-drag-one combustion engine combined cycle unit is in the starting process, according to the selected starting mode of the two-drag-one combustion engine combined cycle unit, the load lifting condition of the combustion engine meets a signal, the manual station automatic state input condition of the first combustion engine or the second combustion engine meets the signal, and the load lifting of the corresponding combustion engine is controlled in the starting process;
and if the two-to-one gas turbine combined cycle unit is in the stopping process, controlling the corresponding gas turbine to reduce the load in the stopping process according to the lifting load condition satisfaction signal of the first gas turbine or the second gas turbine and the manual station automatic state input condition satisfaction signal of the corresponding gas turbine.
In one embodiment, according to a selected starting mode of the two-driving-one combustion engine combined cycle unit, the load lifting condition of the combustion engine meets a signal, the automatic station operation state input condition of the first combustion engine or the second combustion engine meets a signal, and the load lifting of the corresponding combustion engine in the starting process is controlled, and the method comprises the following steps:
if the selected starting mode of the two-driving-one combustion engine combined cycle unit is the one-driving-one starting mode, controlling the load of the corresponding combustion engine to rise to a starting target value of the one-driving-one unit in the starting process according to the input condition meeting signal of the automatic state of the manual station corresponding to the combustion engine and the load increasing condition meeting signal of the corresponding combustion engine as the first starting initial load;
and if the selected starting mode of the two-driving-one combustion engine combined cycle unit is a two-driving-one starting mode, controlling the loads of the first combustion engine and the second combustion engine to rise to a starting target value of the two-driving-one unit in the starting process according to the condition enabling signals of the automatic state of the manual operation station of the first combustion engine and the second combustion engine, the starting initial load increasing condition enabling signal of the first combustion engine serving as a first starting station and the starting initial load increasing condition enabling signal of the second combustion engine serving as a second starting station.
In one embodiment, the load reduction of the corresponding combustion engine in the stop process is controlled according to the lifting load condition satisfaction signal of the first combustion engine or the second combustion engine and the hand-operated station automatic state input condition satisfaction signal of the corresponding combustion engine, and the method comprises the following steps:
if the steam is not required to be removed in the stopping process, controlling the load of the corresponding gas turbine to be reduced to a set load according to the condition that the manual operation station automatic state input condition of the corresponding gas turbine meets the signal, the load reducing condition of the corresponding gas turbine meets the signal or the splitting signal of the corresponding gas turbine;
and if steam is required to be removed in the stopping process, controlling the load of the corresponding combustion engine to be reduced to the set load according to the input condition meeting signal of the manual operation station automatic state of the corresponding combustion engine and the load reduction condition meeting signal of the corresponding combustion engine.
In one embodiment, the method for controlling the load of the corresponding combustion engine to rise to a start target value of a tractor unit in the starting process according to the hand-operated station automatic state input condition satisfying signal of the corresponding combustion engine and the initial start load increasing condition satisfying signal of the corresponding combustion engine as a first start initial load comprises the following steps:
starting a corresponding gas turbine, connecting the corresponding gas turbine to the grid, and bringing the corresponding gas turbine to a certain initial load;
putting the corresponding gas turbine into the manual station automatic state according to the manual station automatic state putting condition meeting signals of the corresponding gas turbine;
the external load control mode of the corresponding combustion engine is started, if the initial starting load increasing condition of the corresponding combustion engine satisfies the following conditions, a load rising trigger signal of the corresponding combustion engine is obtained, and the load of the corresponding combustion engine is controlled to rise to the set target value in the initial starting load increasing condition satisfying signal of the corresponding combustion engine: receiving a starting condition satisfaction signal of a first combustion engine of the corresponding combustion engine, the sum of the temperature of the steam required by the steam engine and 10 ℃ being not less than the smoke temperature of the corresponding combustion engine, and the load of the corresponding combustion engine being less than the set target value in the initial load increasing condition satisfaction signal of the first starting;
putting a performance heater corresponding to the combustion engine, putting a steam turbine sliding pressure control mode, if the initial load increasing condition of the corresponding combustion engine as a first starting initial load meets the following conditions, obtaining a load rising trigger signal corresponding to the combustion engine, and closing a high-pressure bypass and a low-pressure bypass corresponding to the combustion engine: the temperature of the natural gas is higher than a set temperature value, the high-pressure bypass and the medium-pressure bypass of the boiler corresponding to the combustion engine are all closed, the time delay is 30s, and the load corresponding to the combustion engine is lower than a set value;
if the initial load increasing condition of the corresponding combustion engine as the first starting initial load meets the following conditions, acquiring a load increasing trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to increase to a starting target value of a tractor unit: the load corresponding to the combustion engine is smaller than a unit starting target value.
In specific implementation, fig. 10 is a flowchart of load increase control in a one-driving-one unit starting mode according to an embodiment of the present invention, and as shown in fig. 10, taking a first combustion engine as an example, a specific process of controlling a load of the first combustion engine to increase to a one-driving-one unit starting target value in a starting process is as follows:
the external load control mode of the first internal combustion engine is started, if the initial starting load increasing condition of the first internal combustion engine satisfies the following conditions, a load rising trigger signal of the first internal combustion engine is obtained, and the load of the first internal combustion engine is controlled to rise to a set target value in the initial starting load increasing condition satisfying signal of the first internal combustion engine: receiving a first engine start condition satisfaction signal of the first engine, the sum of the steam temperature required by the steam engine and 10 degrees centigrade being not less than the smoke temperature of the corresponding engine, the load of the first engine being less than the set target value in the first start initial load increasing condition satisfaction signal, as shown in fig. 6, in addition to the above conditions being satisfied, the first engine start initial load increasing condition satisfaction signal of the first engine in this step is the first start initial load increasing condition satisfaction signal 1 of the first engine in fig. 6, which also needs to satisfy the condition that the first engine external load control mode is put in, since the external load control mode has been put in step 1003, that is, the first engine start initial load increasing condition satisfaction signal of the first engine determines that the condition that the first engine external load control mode is put in can be satisfied, and are not listed here.
Fig. 11 is a logic diagram for obtaining the engine load up trigger signal and the engine load down trigger signal in the embodiment of the present invention, and as shown in fig. 11, in this step, the load up trigger signal of the first engine can be obtained according to fig. 11.
Step 1004, putting a performance heater of the first combustion engine into a turbine sliding pressure control mode;
putting a performance heater of a first combustion engine, putting the first combustion engine into a turbine sliding pressure control mode, if the initial load increasing condition of the first combustion engine as a first starting initial load meets the following conditions, acquiring a load rising trigger signal of the first combustion engine, and closing a high-pressure bypass and a low-pressure bypass of the first combustion engine: the temperature of the natural gas is higher than a set temperature value, the high-pressure bypass of the boiler of the first combustion engine is fully closed, the medium-pressure bypass is fully closed, the time delay is 30s, and the load of the first combustion engine is lower than a set value; in addition to the above condition, as shown in fig. 6, the initial starting load increasing condition satisfaction signal of the first combustion engine in this step is the initial starting load increasing condition satisfaction signal 2-2 of the first combustion engine in fig. 6, and this signal also needs to satisfy that the initial combustion engine starting condition satisfaction signal of the first combustion engine is received, the turbine sliding pressure control mode is already put into use, and since the initial combustion engine starting condition satisfaction signal of the first combustion engine is received in step 1003, and the turbine sliding pressure control mode is already put into use in step 1004, this is not listed here.
if the initial load increase condition of the first combustion engine as the initial start meets the following conditions, obtaining the load increase trigger signal of the first combustion engine according to fig. 11, and controlling the load of the first combustion engine to increase to a starting target value of a tractor group: the load of the first combustion engine is smaller than a unit starting target value; in addition to the above conditions, as shown in fig. 6, the initial start-up initial load increase condition satisfaction signal of the first internal combustion engine in this step is the initial start-up initial load increase condition satisfaction signal 3 of the first internal combustion engine as shown in fig. 6, and as shown in fig. 6, the signals also need to satisfy the conditions that the initial start-up condition satisfaction signal of the first internal combustion engine is received, the high-pressure bypass and the medium-pressure bypass of the boiler of the first internal combustion engine are all closed and the medium-pressure bypass is all closed and the delay time is 30s, the external load control mode input of the first internal combustion engine, which have been satisfied in the above steps, and thus are not listed here.
In one embodiment, the method for controlling the loads of the first combustion engine and the second combustion engine to rise to the starting target value of the two-tractor unit in the starting process according to the hand-station automatic state input condition satisfaction signals of the first combustion engine and the second combustion engine, the starting initial load increasing condition satisfaction signal of the first combustion engine and the starting initial load increasing condition satisfaction signal of the second combustion engine comprises the following steps:
controlling the load of the first combustion engine to rise to a tractor group starting target value in the starting process according to the method in the previous embodiment;
putting the second combustion engine into an external load mode, starting the second combustion engine, connecting the second combustion engine to the grid, and bringing the second combustion engine to a certain initial load;
opening a first combustion engine steam-combining electric door, determining that the first combustion engine and a second combustion engine are not in a stop steam-withdrawing sequential control process, if a second combustion engine serving as a second start initial load increasing condition meets the following conditions, obtaining a load increasing trigger signal of the second combustion engine, and controlling the load of the second combustion engine to increase to a set target load of the second combustion engine serving as a second start initial load increasing condition meeting the signal: receiving a second combustion engine starting condition satisfaction signal of a second combustion engine, wherein the load of the second combustion engine is smaller than the set target load in the second starting initial load increasing condition satisfaction signal;
and inputting a performance heater corresponding to the second engine, if the second starting initial load increasing condition of the second engine satisfies the following conditions, acquiring a load rising trigger signal of the second engine, and controlling the load of the second engine to rise to the set target load of the second starting initial load increasing condition satisfying signal of the second engine: receiving a starting condition satisfaction signal of the second combustion engine, the natural gas temperature is higher than a set temperature value, and the load of the second combustion engine is lower than the set target load in the starting initial load increasing condition satisfaction signal of the second combustion engine;
when the sum of the load of the first internal combustion engine and the load of the second internal combustion engine is smaller than the unit start target value in the two-pull-one start mode, the second engine is controlled to be increased in load until the sum of the load of the first internal combustion engine and the load of the second internal combustion engine reaches the unit start target value in the two-pull-one start mode, or the load of the second internal combustion engine is equal to the load of the first internal combustion engine.
In specific implementation, fig. 12 is a flowchart of load increase control in the two-tractor group start mode according to the embodiment of the present invention, and as shown in fig. 12, taking the first combustion engine as the first start and the second combustion engine as the second start as an example, a specific process for controlling the loads of the first combustion engine and the second combustion engine to increase to the two-tractor group start target value during the start process is as follows:
step 1201, controlling the load of the first combustion engine to rise to a tractor set starting target value in the starting process;
controlling the load of the first combustion engine to rise to a tractor set starting target value in the starting process according to steps 1001-1005;
opening the first combustion engine parallel-steam electric door, determining that the first combustion engine and the second combustion engine are not in the stop and steam-withdrawal sequential control process, if the second combustion engine serving as a second start initial load increasing condition meets the following conditions, obtaining a load increasing trigger signal of the second combustion engine, obtaining the load increasing trigger signal of the second combustion engine according to the graph 11, and controlling the load of the second combustion engine to increase to the set target load of the second combustion engine serving as the second start initial load increasing condition meeting the signal: receiving a second combustion engine starting condition satisfaction signal of a second combustion engine, wherein the load of the second combustion engine is smaller than the set target load in the second starting initial load increasing condition satisfaction signal; in addition to the above condition being required to be satisfied, the signal for satisfying the initial load increase condition as the second start-up of the second internal combustion engine in this step is, as shown in fig. 7, the signal for satisfying the initial load increase condition as the second start-up of the second internal combustion engine as shown in fig. 7, which signal is also required to satisfy the condition that the external load control mode of the second internal combustion engine has been put into use, as shown in fig. 7, and in step 1202, the external load mode of the second internal combustion engine has been put into use, and therefore this condition is satisfied and is not listed here.
the performance heater corresponding to the second engine is put in, and if the second engine initial load increase condition as the second start initial load increase condition satisfies the following condition, the load increase trigger signal of the second engine is obtained according to fig. 11, and the load of the second engine is controlled to increase to the set target load in the second engine initial load increase condition satisfying signal: receiving a starting condition satisfaction signal of the second combustion engine, the natural gas temperature is higher than a set temperature value, and the load of the second combustion engine is lower than the set target load in the starting initial load increasing condition satisfaction signal of the second combustion engine;
step 1205, controlling the second engine to load up for the third time;
when the sum of the load of the first internal combustion engine and the load of the second internal combustion engine is smaller than the unit start target value in the two-pull-one start mode, the second engine is controlled to be increased in load until the sum of the load of the first internal combustion engine and the load of the second internal combustion engine reaches the unit start target value in the two-pull-one start mode, or the load of the second internal combustion engine is equal to the load of the first internal combustion engine.
In one embodiment, if the steam is not required to be removed during the shutdown process, controlling the load of the corresponding combustion engine to be reduced to the set load according to the condition that the manual operation station automatic state of the corresponding combustion engine meets the signal, the load reduction condition of the corresponding combustion engine meets the signal or the splitting signal of the corresponding combustion engine, and the method comprises the following steps:
according to the hand-operated station automatic state input condition of the corresponding combustion engine, the signal is met, and according to the hand-operated station automatic state of the corresponding combustion engine, the input is carried out;
if the load reduction condition of the corresponding combustion engine meets the following condition, or a splitting signal of the corresponding combustion engine is received, obtaining a load reduction trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to be reduced to a set target load: and receiving a stop satisfaction signal of the corresponding combustion engine, wherein the load of the corresponding combustion engine is in a set range.
Specifically, fig. 13 is a flowchart of controlling load reduction of the internal combustion engine without steam extraction in the embodiment of the present invention, and as shown in fig. 13, taking the first internal combustion engine as the first start and the second internal combustion engine as the second start as an example, a specific process of controlling the first internal combustion engine to reduce load without steam extraction is as follows:
if the load reduction condition of the first combustion engine satisfies the following condition, or a disconnection signal of the first combustion engine is received to obtain a load reduction trigger signal of the first combustion engine, the load reduction trigger signal of the first combustion engine can be obtained according to fig. 11, and the load of the first combustion engine is controlled to be reduced to the set target load: and receiving the stop satisfaction signal of the first combustion engine, wherein the load of the first combustion engine is in a set range. A more specific satisfaction condition of the load reduction condition satisfaction signal of the first combustion engine is shown in fig. 8 and is not separately listed here.
In one embodiment, if steam is required to be removed in the shutdown process, the load of the corresponding combustion engine is controlled to be reduced to the set load according to the input condition meeting signal of the manual operation station automatic state of the corresponding combustion engine and the load reduction condition meeting signal of the corresponding combustion engine, and the method comprises the following steps:
according to the hand-operated station automatic state input condition of the corresponding combustion engine, the signal is met, and according to the hand-operated station automatic state of the corresponding combustion engine, the input is carried out;
confirming that a high-pressure reheating steam-combining electric door of a corresponding boiler of a corresponding combustion engine is opened;
if the load reduction condition of the corresponding combustion engine meets the following conditions, obtaining a load reduction trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to be reduced to a set target load: the load of the corresponding combustion engine is greater than the set target load;
closing the pressure and reheating steam-combining electric door with the high pressure of the second furnace, and if the load reduction condition of the corresponding combustion engine meets the following conditions, obtaining a load reduction trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to be reduced to a set target load: the load corresponding to the internal combustion engine is greater than the set target load.
Specifically, fig. 14 is a flowchart of controlling the load of the internal combustion engine to decrease under the condition of steam withdrawal in the embodiment of the present invention, and as shown in fig. 14, taking the first internal combustion engine as an example, a specific process of controlling the first internal combustion engine to decrease the load under the condition of steam withdrawal is as follows:
1401, according to the hand-operated station automatic state input condition of the first combustion engine meeting the signal, inputting according to the hand-operated station automatic state of the corresponding combustion engine;
if the load reduction condition of the first combustion engine satisfies the following condition, the load reduction trigger signal of the first combustion engine is obtained, the load reduction trigger signal of the first combustion engine can be obtained according to fig. 11, and the load of the first combustion engine is controlled to be reduced to the set target load: the load of the first combustion engine is greater than the set target load; other specific conditions under which the load shedding condition of the first combustion engine satisfies the signal are shown in fig. 8 and are not separately listed here.
closing the pressure and reheating steam-combining electric door with the high pressure of the second furnace, and if the load reduction condition of the corresponding combustion engine meets the following conditions, obtaining a load reduction trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to be reduced to a set target load: the load corresponding to the internal combustion engine is greater than the set target load. The load of the first combustion engine is greater than the set target load; other specific conditions under which the load shedding condition of the first combustion engine satisfies the signal are shown in fig. 8 and are not separately listed here.
In one embodiment, after the second engine is started and connected to the grid, and the second engine is brought to a certain initial load, the method further comprises:
and exiting the combustion engine manual operation station automatic state of the first combustion engine according to the condition that the manual operation station automatic state of the first combustion engine meets the signal.
In the specific implementation, in the two-in-one starting mode, after the second fuel is started and connected to the grid, and the second fuel is brought to a certain initial load, the automatic manual station operating state of the first combustion engine is exited, so that the load rise trigger signal of the first combustion engine can be prevented from being influenced when the first combustion engine is put into closed-loop coordination in the load rise process of the second combustion engine.
In one embodiment, before the entering of the hand-operated station automatic state according to the corresponding combustion engine satisfies the signal according to the hand-operated station automatic state entering condition of the corresponding combustion engine, the method further comprises the following steps:
and in the two combustion engines, the load of the non-corresponding combustion engine exceeds the set load, and the manual station automatic state of the non-corresponding combustion engine is quitted according to the manual station automatic state quit condition of the non-corresponding combustion engine meeting the signal.
When the first combustion engine is in the steam-stripping stop process, the load of the second combustion engine is larger than a certain range, the automatic state of the load control manual operation station of the second combustion engine needs to be cut off, and therefore the situation that the load reduced by the first combustion engine is added to the load of the second combustion engine through closed-loop coordination of the second combustion engine in the load reducing process is avoided, and therefore interference to the total load is caused.
In an embodiment, in the one-drag-one start mode, taking the first combustion engine as an example, when the first combustion engine is not connected to the grid and is not in the external load mode, the hand-operated station automatic state of the first combustion engine needs to be exited according to the hand-operated station automatic state exiting condition of the first combustion engine satisfying a signal.
In the method for controlling the start-stop lifting load of the two-drag-one gas turbine combined cycle unit, which is provided by the embodiment of the invention, a signal for meeting the start-stop condition of the gas turbine is obtained, wherein the gas turbine comprises a first gas turbine and a second gas turbine in the two-drag-one gas turbine combined cycle unit; acquiring a fuel machine lifting load condition satisfying signal according to the fuel machine starting and stopping condition satisfying signal; obtaining a signal that the automatic state switching condition of the manual operation station of the gas turbine meets according to the signal that the lifting load condition of the gas turbine meets; and controlling the load lifting of the gas turbine in the starting and stopping process according to the signal that the load lifting condition of the gas turbine meets the signal and the signal that the automatic state of the gas turbine manual operation station meets the stopping condition of the gas turbine meets the signal. In the embodiment of the invention, manual operation is not needed, and the load lifting in the starting and stopping process of the gas turbine is controlled only according to the condition meeting signal of the load lifting condition of the gas turbine and the condition meeting signal of the automatic state switching condition of the manual station of the gas turbine, so that the efficiency is improved, and because the manual participation is less, the misoperation can be reduced, and the control efficiency of the load lifting is improved.
Based on the same inventive concept, the embodiment of the invention also provides a start-stop lifting load control device of the two-drag-one gas turbine combined cycle unit, the idea of the device is completely the same as that of the start-stop lifting load control method of the two-drag-one gas turbine combined cycle unit, and repeated parts are not repeated.
Fig. 15 is a schematic diagram of a start-stop lifting load control device for a two-drive-one combustion engine combined cycle unit according to an embodiment of the present invention, and as shown in fig. 15, the device includes:
the first signal obtaining module 1501 is configured to obtain a signal that the start-stop condition of a combustion engine meets, where the combustion engine includes a first combustion engine and a second combustion engine in a two-drive-one combustion engine combined cycle unit;
a second signal obtaining module 1502, configured to obtain a signal that a lifting load condition of the gas turbine meets according to the signal that the starting and stopping conditions of the gas turbine meet;
the third signal obtaining module 1503 is used for obtaining a signal that the automatic state switching condition of the manual operation station of the combustion engine meets according to the signal that the lifting load condition of the combustion engine meets;
and the control module 1504 is used for controlling the load of the combustion engine to rise and fall in the starting and stopping process according to the condition meeting signal of the load of the combustion engine to rise and fall and the condition meeting signal of the automatic state of the manual station of the combustion engine to start and stop.
In one embodiment, the engine start-stop condition satisfaction signal comprises at least one of the following condition satisfaction signals for the first or second combustion engine: the starting condition of the first gas turbine is a signal which is met by the starting condition, the starting condition of the second gas turbine is a signal which is met by the starting condition, the stopping condition under the steam-removing condition is a signal which is met by the stopping condition, and the stopping condition is a signal which is met by the stopping condition;
the automatic state switching on and off condition satisfaction signal of the combustion engine manual operation station comprises one of the following condition satisfaction signals of a first combustion engine or a second combustion engine: the automatic state input condition of the manual operation station meets the signal, and the automatic state exit condition of the manual operation station meets the signal;
the combustion engine lifting load condition satisfaction signal comprises one of the following condition satisfaction signals of the first combustion engine or the second combustion engine: the first start initial load increasing condition meets the signal, the second start initial load increasing condition meets the signal, and the load reducing condition meets the signal.
In an embodiment, the control module 1504 is specifically configured to:
if the two-drag-one combustion engine combined cycle unit is in the starting process, according to the selected starting mode of the two-drag-one combustion engine combined cycle unit, the load lifting condition of the combustion engine meets a signal, the manual station automatic state input condition of the first combustion engine or the second combustion engine meets the signal, and the load lifting of the corresponding combustion engine is controlled in the starting process;
and if the two-to-one gas turbine combined cycle unit is in the stopping process, controlling the corresponding gas turbine to reduce the load in the stopping process according to the lifting load condition satisfaction signal of the first gas turbine or the second gas turbine and the manual station automatic state input condition satisfaction signal of the corresponding gas turbine.
In an embodiment, the control module 1504 is specifically configured to:
if the selected starting mode of the two-driving-one combustion engine combined cycle unit is the one-driving-one starting mode, controlling the load of the corresponding combustion engine to rise to a starting target value of the one-driving-one unit in the starting process according to the input condition meeting signal of the automatic state of the manual station corresponding to the combustion engine and the load increasing condition meeting signal of the corresponding combustion engine as the first starting initial load;
and if the selected starting mode of the two-driving-one combustion engine combined cycle unit is a two-driving-one starting mode, controlling the loads of the first combustion engine and the second combustion engine to rise to a starting target value of the two-driving-one unit in the starting process according to the condition enabling signals of the automatic state of the manual operation station of the first combustion engine and the second combustion engine, the starting initial load increasing condition enabling signal of the first combustion engine serving as a first starting station and the starting initial load increasing condition enabling signal of the second combustion engine serving as a second starting station.
In an embodiment, the control module 1504 is specifically configured to:
if the steam is not required to be removed in the stopping process, controlling the load of the corresponding gas turbine to be reduced to a set load according to the condition that the manual operation station automatic state input condition of the corresponding gas turbine meets the signal, the load reducing condition of the corresponding gas turbine meets the signal or the splitting signal of the corresponding gas turbine;
and if steam is required to be removed in the stopping process, controlling the load of the corresponding combustion engine to be reduced to the set load according to the input condition meeting signal of the manual operation station automatic state of the corresponding combustion engine and the load reduction condition meeting signal of the corresponding combustion engine.
In an embodiment, the control module 1504 is specifically configured to:
starting a corresponding gas turbine, connecting the corresponding gas turbine to the grid, and bringing the corresponding gas turbine to a certain initial load;
putting the corresponding gas turbine into the manual station automatic state according to the manual station automatic state putting condition meeting signals of the corresponding gas turbine;
the external load control mode of the corresponding combustion engine is started, if the initial starting load increasing condition of the corresponding combustion engine satisfies the following conditions, a load rising trigger signal of the corresponding combustion engine is obtained, and the load of the corresponding combustion engine is controlled to rise to the set target value in the initial starting load increasing condition satisfying signal of the corresponding combustion engine: receiving a starting condition satisfaction signal of a first combustion engine of the corresponding combustion engine, the sum of the temperature of the steam required by the steam engine and 10 ℃ being not less than the smoke temperature of the corresponding combustion engine, and the load of the corresponding combustion engine being less than the set target value in the initial load increasing condition satisfaction signal of the first starting;
putting a performance heater corresponding to the combustion engine, putting a steam turbine sliding pressure control mode, if the initial load increasing condition of the corresponding combustion engine as a first starting initial load meets the following conditions, obtaining a load rising trigger signal corresponding to the combustion engine, and closing a high-pressure bypass and a low-pressure bypass corresponding to the combustion engine: the temperature of the natural gas is higher than a set temperature value, the high-pressure bypass and the medium-pressure bypass of the boiler corresponding to the combustion engine are completely closed, the time delay is 30s, and the load corresponding to the combustion engine is higher than a set value;
if the initial load increasing condition of the corresponding combustion engine as the first starting initial load meets the following conditions, acquiring a load increasing trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to increase to a starting target value of a tractor unit: the load corresponding to the combustion engine is smaller than a unit starting target value.
In an embodiment, the control module 1504 is specifically configured to:
controlling the load of the first combustion engine to rise to a tractor set starting target value in the starting process;
putting the second combustion engine into an external load mode, starting the second combustion engine, connecting the second combustion engine to the grid, and bringing the second combustion engine to a certain initial load;
opening a first combustion engine steam-combining electric door, determining that the first combustion engine and a second combustion engine are not in a stop steam-withdrawing sequential control process, if a second combustion engine serving as a second start initial load increasing condition meets the following conditions, obtaining a load increasing trigger signal of the second combustion engine, and controlling the load of the second combustion engine to increase to a set target load of the second combustion engine serving as a second start initial load increasing condition meeting the signal: receiving a second combustion engine starting condition satisfaction signal of a second combustion engine, wherein the load of the second combustion engine is smaller than the set target load in the second starting initial load increasing condition satisfaction signal;
and inputting a performance heater corresponding to the second engine, if the second starting initial load increasing condition of the second engine satisfies the following conditions, acquiring a load rising trigger signal of the second engine, and controlling the load of the second engine to rise to the set target load of the second starting initial load increasing condition satisfying signal of the second engine: receiving a starting condition satisfaction signal of the second combustion engine, the natural gas temperature is higher than a set temperature value, and the load of the second combustion engine is lower than the set target load in the starting initial load increasing condition satisfaction signal of the second combustion engine;
when the sum of the load of the first internal combustion engine and the load of the second internal combustion engine is smaller than the unit start target value in the two-pull-one start mode, the second engine is controlled to be increased in load until the sum of the load of the first internal combustion engine and the load of the second internal combustion engine reaches the unit start target value in the two-pull-one start mode, or the load of the second internal combustion engine is equal to the load of the first internal combustion engine.
In an embodiment, the control module 1504 is specifically configured to:
according to the hand-operated station automatic state input condition of the corresponding combustion engine, the signal is met, and according to the hand-operated station automatic state of the corresponding combustion engine, the input is carried out;
if the load reduction condition of the corresponding combustion engine meets the following condition, or a splitting signal of the corresponding combustion engine is received, obtaining a load reduction trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to be reduced to a set target load: and receiving a stop satisfaction signal of the corresponding combustion engine, wherein the load of the corresponding combustion engine is in a set range.
In an embodiment, the control module 1504 is specifically configured to:
according to the hand-operated station automatic state input condition of the corresponding combustion engine, the signal is met, and according to the hand-operated station automatic state of the corresponding combustion engine, the input is carried out;
confirming that a high-pressure reheating steam-combining electric door of a corresponding boiler of a corresponding combustion engine is opened;
if the load reduction condition of the corresponding combustion engine meets the following conditions, obtaining a load reduction trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to be reduced to a set target load: the load of the corresponding combustion engine is greater than the set target load;
closing the pressure and reheating steam-combining electric door with the high pressure of the second furnace, and if the load reduction condition of the corresponding combustion engine meets the following conditions, obtaining a load reduction trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to be reduced to a set target load: the load corresponding to the internal combustion engine is greater than the set target load.
In an embodiment, the control module 1504 is further configured to:
and exiting the combustion engine manual operation station automatic state of the first combustion engine according to the condition that the manual operation station automatic state of the first combustion engine meets the signal.
In an embodiment, the control module 1504 is further configured to:
and in the two combustion engines, the load of the non-corresponding combustion engine exceeds the set load, and the manual station automatic state of the non-corresponding combustion engine is quitted according to the manual station automatic state quit condition of the non-corresponding combustion engine meeting the signal.
In the start-stop lifting load control device of the two-drag-one gas turbine combined cycle unit, which is provided by the embodiment of the invention, a first signal acquisition module is used for acquiring signals meeting the start-stop conditions of the gas turbine, and the gas turbine comprises a first gas turbine and a second gas turbine in the two-drag-one gas turbine combined cycle unit; the first signal acquisition module is used for acquiring a signal meeting the lifting load condition of the gas turbine according to the signal meeting the starting and stopping conditions of the gas turbine; the third signal acquisition module is used for acquiring signals meeting the automatic state switching condition of the manual operation station of the combustion engine according to the signals meeting the lifting load condition of the combustion engine; and the control module is used for controlling the load lifting of the gas turbine in the starting and stopping process according to the signal meeting the load lifting condition of the gas turbine and the signal meeting the automatic state switching condition of the manual gas turbine station. The process does not need manual operation, and only needs to meet the signal according to the lifting load condition of the gas turbine and the signal according to the automatic state switching condition of the manual operation station of the gas turbine, so that the lifting load of the gas turbine in the starting and stopping process is controlled, the efficiency is improved, and because the manual participation is less, the misoperation can be reduced, and the lifting load control efficiency is improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (13)
1. A start-stop lifting load control method for a two-drive-one gas turbine combined cycle unit is characterized by comprising the following steps:
obtaining a signal that the starting and stopping conditions of a gas turbine meet, wherein the gas turbine comprises a first gas turbine and a second gas turbine in a two-in-one gas turbine combined cycle unit;
acquiring a fuel machine lifting load condition satisfying signal according to the fuel machine starting and stopping condition satisfying signal;
obtaining a signal that the automatic state switching condition of the manual operation station of the gas turbine meets according to the signal that the lifting load condition of the gas turbine meets;
controlling the load lifting of the gas turbine in the starting and stopping process according to the signal that the load lifting condition of the gas turbine meets and the signal that the automatic state of the gas turbine manual operation station meets the switching condition;
according to the condition that the lifting load of the gas turbine meets the signal and the condition that the automatic state of the manual operation station of the gas turbine meets the signal, the lifting load of the gas turbine in the starting and stopping process is controlled, and the method comprises the following steps: if the two-drag-one combustion engine combined cycle unit is in the starting process, according to the selected starting mode of the two-drag-one combustion engine combined cycle unit, the load lifting condition of the combustion engine meets a signal, the manual station automatic state input condition of the first combustion engine or the second combustion engine meets the signal, and the load lifting of the corresponding combustion engine is controlled in the starting process; and if the two-to-one gas turbine combined cycle unit is in the stopping process, controlling the corresponding gas turbine to reduce the load in the stopping process according to the lifting load condition satisfaction signal of the first gas turbine or the second gas turbine and the manual station automatic state input condition satisfaction signal of the corresponding gas turbine.
2. The start-stop lifting load control method of a two-drag-one combustion engine combined cycle unit according to claim 1, wherein the combustion engine start-stop condition satisfaction signal at least comprises one of the following condition satisfaction signals of the first combustion engine or the second combustion engine: the starting condition of the first gas turbine is a signal which is met by the starting condition, the starting condition of the second gas turbine is a signal which is met by the starting condition, the stopping condition under the steam-removing condition is a signal which is met by the stopping condition, and the stopping condition is a signal which is met by the stopping condition;
the automatic state switching on and off condition satisfaction signal of the combustion engine manual operation station comprises one of the following condition satisfaction signals of a first combustion engine or a second combustion engine: the automatic state input condition of the manual operation station meets the signal, and the automatic state exit condition of the manual operation station meets the signal;
the combustion engine lifting load condition satisfaction signal comprises one of the following condition satisfaction signals of the first combustion engine or the second combustion engine: the first start initial load increasing condition meets the signal, the second start initial load increasing condition meets the signal, and the load reducing condition meets the signal.
3. The start-stop load lifting control method of the two-drag-one gas turbine combined cycle unit according to claim 2, wherein according to the selected start mode of the two-drag-one gas turbine combined cycle unit, the load lifting condition of the gas turbine meets a signal, and the manual station automatic state input condition of the first gas turbine or the second gas turbine meets the signal, the corresponding gas turbine is controlled to lift load in the starting process, and the method comprises the following steps:
if the selected starting mode of the two-driving-one combustion engine combined cycle unit is the one-driving-one starting mode, controlling the load of the corresponding combustion engine to rise to a starting target value of the one-driving-one unit in the starting process according to the input condition meeting signal of the automatic state of the manual station corresponding to the combustion engine and the load increasing condition meeting signal of the corresponding combustion engine as the first starting initial load;
and if the selected starting mode of the two-driving-one combustion engine combined cycle unit is a two-driving-one starting mode, controlling the loads of the first combustion engine and the second combustion engine to rise to a starting target value of the two-driving-one unit in the starting process according to the condition enabling signals of the automatic state of the manual operation station of the first combustion engine and the second combustion engine, the starting initial load increasing condition enabling signal of the first combustion engine serving as a first starting station and the starting initial load increasing condition enabling signal of the second combustion engine serving as a second starting station.
4. The start-stop lifting load control method of the two-drag-one combustion engine combined cycle unit according to claim 2, wherein the load reduction of the corresponding combustion engine in the shutdown process is controlled according to the lifting load condition satisfaction signal of the first combustion engine or the second combustion engine and the manual station automatic state input condition satisfaction signal of the corresponding combustion engine, and the method comprises the following steps:
if the steam is not required to be removed in the stopping process, controlling the load of the corresponding gas turbine to be reduced to a set load according to the condition that the manual operation station automatic state input condition of the corresponding gas turbine meets the signal, the load reducing condition of the corresponding gas turbine meets the signal or the splitting signal of the corresponding gas turbine;
and if steam is required to be removed in the stopping process, controlling the load of the corresponding combustion engine to be reduced to the set load according to the input condition meeting signal of the manual operation station automatic state of the corresponding combustion engine and the load reduction condition meeting signal of the corresponding combustion engine.
5. The start-stop lifting load control method of the two-driving-one combustion engine combined cycle unit according to claim 3, wherein the control of the load of the corresponding combustion engine to rise to the start target value of the one-driving-one unit in the starting process according to the hand-operated station automatic state input condition satisfaction signal of the corresponding combustion engine and the initial start load increasing condition satisfaction signal of the corresponding combustion engine as the first start, comprises the following steps:
starting a corresponding gas turbine, connecting the corresponding gas turbine to the grid, and bringing the corresponding gas turbine to a certain initial load;
putting the corresponding gas turbine into the manual station automatic state according to the manual station automatic state putting condition meeting signals of the corresponding gas turbine;
the external load control mode of the corresponding combustion engine is started, if the initial starting load increasing condition of the corresponding combustion engine satisfies the following conditions, a load rising trigger signal of the corresponding combustion engine is obtained, and the load of the corresponding combustion engine is controlled to rise to the set target value in the initial starting load increasing condition satisfying signal of the corresponding combustion engine: receiving a starting condition satisfaction signal of a first combustion engine of the corresponding combustion engine, the sum of the temperature of the steam required by the steam engine and 10 ℃ being not less than the smoke temperature of the corresponding combustion engine, and the load of the corresponding combustion engine being less than the set target value in the initial load increasing condition satisfaction signal of the first starting;
putting a performance heater corresponding to the combustion engine, putting a steam turbine sliding pressure control mode, if the initial load increasing condition of the corresponding combustion engine as a first starting initial load meets the following conditions, obtaining a load rising trigger signal corresponding to the combustion engine, and closing a high-pressure bypass and a low-pressure bypass corresponding to the combustion engine: the temperature of the natural gas is higher than a set temperature value, the high-pressure bypass and the medium-pressure bypass of the boiler corresponding to the combustion engine are completely closed, the time delay is 30s, and the load corresponding to the combustion engine is higher than a set value;
if the initial load increasing condition of the corresponding combustion engine as the first starting initial load meets the following conditions, acquiring a load increasing trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to increase to a starting target value of a tractor unit: the load corresponding to the combustion engine is smaller than a unit starting target value.
6. The start-stop load lifting control method for the two-drive-one combustion engine combined cycle unit according to claim 5, wherein according to the hand-operated station automatic state input condition satisfaction signals of the first combustion engine and the second combustion engine, the start initial load increasing condition satisfaction signal of the first combustion engine as a first station and the start initial load increasing condition satisfaction signal of the second combustion engine as a second station control initial load increasing condition satisfaction signal of the second combustion engine, the load of the first combustion engine and the load of the second combustion engine are controlled to rise to the start target value of the two-drive-one unit in the starting process, and the method comprises the following steps:
controlling the load of the first combustion engine to increase to a tractor group start target value during start-up according to the method of claim 5;
putting the second combustion engine into an external load mode, starting the second combustion engine, connecting the second combustion engine to the grid, and bringing the second combustion engine to a certain initial load;
opening a first combustion engine steam-combining electric door, determining that the first combustion engine and a second combustion engine are not in a stop steam-withdrawing sequential control process, if a second combustion engine serving as a second start initial load increasing condition meets the following conditions, obtaining a load increasing trigger signal of the second combustion engine, and controlling the load of the second combustion engine to increase to a set target load of the second combustion engine serving as a second start initial load increasing condition meeting the signal: receiving a second combustion engine starting condition satisfaction signal of a second combustion engine, wherein the load of the second combustion engine is smaller than the set target load in the second starting initial load increasing condition satisfaction signal;
and inputting a performance heater corresponding to the second engine, if the second starting initial load increasing condition of the second engine satisfies the following conditions, acquiring a load rising trigger signal of the second engine, and controlling the load of the second engine to rise to the set target load of the second starting initial load increasing condition satisfying signal of the second engine: receiving a starting condition satisfaction signal of the second combustion engine, the natural gas temperature is higher than a set temperature value, and the load of the second combustion engine is lower than the set target load in the starting initial load increasing condition satisfaction signal of the second combustion engine;
when the sum of the load of the first internal combustion engine and the load of the second internal combustion engine is smaller than the unit start target value in the two-pull-one start mode, the second engine is controlled to be increased in load until the sum of the load of the first internal combustion engine and the load of the second internal combustion engine reaches the unit start target value in the two-pull-one start mode, or the load of the second internal combustion engine is equal to the load of the first internal combustion engine.
7. The start-stop lifting load control method of the two-drag-one gas turbine combined cycle unit according to claim 4, wherein if steam withdrawal is not required in the shutdown process, the load of the corresponding gas turbine is controlled to be reduced to a set load according to the condition that the manual station automatic state input condition of the corresponding gas turbine meets a signal, the load reducing condition of the corresponding gas turbine meets a signal or a splitting signal of the corresponding gas turbine, and the method comprises the following steps:
according to the hand-operated station automatic state input condition of the corresponding combustion engine, the signal is met, and according to the hand-operated station automatic state of the corresponding combustion engine, the input is carried out;
if the load reduction condition of the corresponding combustion engine meets the following condition, or a splitting signal of the corresponding combustion engine is received, obtaining a load reduction trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to be reduced to a set target load: and receiving a stop satisfaction signal of the corresponding combustion engine, wherein the load of the corresponding combustion engine is in a set range.
8. The start-stop lifting load control method of the two-drag-one gas turbine combined cycle unit according to claim 4, wherein if steam withdrawal is required in the stop process, the load of the corresponding gas turbine is controlled to be reduced to a set load according to the hand-operated station automatic state input condition meeting signal of the corresponding gas turbine and the load reduction condition meeting signal of the corresponding gas turbine, and the method comprises the following steps:
according to the hand-operated station automatic state input condition of the corresponding combustion engine, the signal is met, and according to the hand-operated station automatic state of the corresponding combustion engine, the input is carried out;
confirming that a high-pressure reheating steam-combining electric door of a corresponding boiler of a corresponding combustion engine is opened;
if the load reduction condition of the corresponding combustion engine meets the following conditions, obtaining a load reduction trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to be reduced to a set target load: the load of the corresponding combustion engine is greater than the set target load;
closing the high-pressure reheating steam-mixing electric door of the corresponding boiler, if the load reduction condition of the corresponding combustion engine meets the following conditions, obtaining a load reduction trigger signal of the corresponding combustion engine, and controlling the load of the corresponding combustion engine to be reduced to a set target load: the load corresponding to the internal combustion engine is greater than the set target load.
9. The two-in-one combustion engine combined cycle unit start-stop lifting load control method as claimed in claim 6, wherein after starting the second engine, connecting the second engine to a grid, and bringing the second engine to a certain initial load, the method further comprises:
and exiting the combustion engine manual operation station automatic state of the first combustion engine according to the condition that the manual operation station automatic state of the first combustion engine meets the signal.
10. The start-stop lifting load control method for a two-drag-one combustion engine combined cycle unit according to claim 8, before the operation is performed according to the manual operation station automatic state of the corresponding combustion engine after the signal is satisfied according to the manual operation station automatic state input condition of the corresponding combustion engine, further comprising:
and in the two combustion engines, the load of the non-corresponding combustion engine exceeds the set load, and the manual station automatic state of the non-corresponding combustion engine is quitted according to the manual station automatic state quit condition of the non-corresponding combustion engine meeting the signal.
11. The utility model provides a two drag a combustion engine combined cycle unit opens and stops lift load control device which characterized in that includes:
the first signal acquisition module is used for acquiring signals meeting the starting and stopping conditions of a combustion engine, wherein the combustion engine comprises a first combustion engine and a second combustion engine in a two-in-one combustion engine combined cycle unit;
the second signal acquisition module is used for acquiring a signal meeting the lifting load condition of the gas turbine according to the signal meeting the starting and stopping conditions of the gas turbine;
the third signal acquisition module is used for acquiring signals meeting the automatic state switching condition of the manual operation station of the combustion engine according to the signals meeting the lifting load condition of the combustion engine;
the control module is used for controlling the load lifting of the gas turbine in the starting and stopping process according to the signal meeting the load lifting condition of the gas turbine and the signal meeting the automatic state switching condition of the gas turbine manual operation station;
the control module is specifically configured to: if the two-drag-one combustion engine combined cycle unit is in the starting process, according to the selected starting mode of the two-drag-one combustion engine combined cycle unit, the load lifting condition of the combustion engine meets a signal, the manual station automatic state input condition of the first combustion engine or the second combustion engine meets the signal, and the load lifting of the corresponding combustion engine is controlled in the starting process; and if the two-to-one gas turbine combined cycle unit is in the stopping process, controlling the corresponding gas turbine to reduce the load in the stopping process according to the lifting load condition satisfaction signal of the first gas turbine or the second gas turbine and the manual station automatic state input condition satisfaction signal of the corresponding gas turbine.
12. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 10 when executing the computer program.
13. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 10.
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| CN111828117B (en) * | 2020-07-09 | 2022-09-23 | 北京京桥热电有限责任公司 | Heat supply control method, device and system for gas-steam combined cycle unit |
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| CN101769180A (en) * | 2009-01-05 | 2010-07-07 | 华北电力科学研究院有限责任公司 | Control method and system thereof for biaxial gas-steam combined cycle unit |
| CN104062960A (en) * | 2013-06-25 | 2014-09-24 | 新华控制工程有限公司 | Automatic starting controller, power plant automatic starting control system and control method thereof |
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| JP6578136B2 (en) * | 2015-05-29 | 2019-09-18 | 三菱日立パワーシステムズ株式会社 | Combined cycle plant, its control device and start-up method |
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| CN104062960A (en) * | 2013-06-25 | 2014-09-24 | 新华控制工程有限公司 | Automatic starting controller, power plant automatic starting control system and control method thereof |
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