CN104062960A - Automatic starting controller, power plant automatic starting control system and control method thereof - Google Patents
Automatic starting controller, power plant automatic starting control system and control method thereof Download PDFInfo
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Abstract
The invention discloses an automatic starting controller, a power plant automatic starting control system and a control method thereof. The automatic starting controller comprises a unit starting condition judgment module which is used for judging whether a unit meets a starting condition to carry out automatic starting control on the unit, an auxiliary system starting module which is used for carrying out starting control on an auxiliary system which assists a host machine system to start, a starting mode judgment module which is used for selecting the unit starting mode of the automatic starting controller according to the information sent by the host machine system as feedback, a starting module which is used for calling the starting sub modules of the unit to carry out starting control according to the selected unit starting mode, and an ending module which is used for ending the control of the automatic starting controller after the unit is started successfully and a load is raised to a target load. A mode of building blocks is employed to flexibly call each host machine starting sub module, and thus the automatic and efficient starting of the whole set of unit in different working conditions is realized.
Description
Technical field
The present invention relates to automatic start controller, power plant starts control system and control method thereof automatically, is mainly used in combustion gas one Combined Cycle Power Plant.
Background technology
Since the eighties in last century, because single-machine capacity and the thermal efficiency of gas turbine all has significant improvement, particularly combustion gas--Steam Combined Cycle technology is gradually improved, add the further exploitation of natural gas source in world wide, making combustion gas--Combined Cycle Power Plant has obtained development rapidly, and obvious variation has also occurred in the status of combustion gas--Steam Combined Cycle in world's power industry.At present, in the annual newly-increased installed capacity in the whole world, about l/3 adopts combustion gas--Steam Combined Cycle unit; In China, along with developing rapidly of Chinese national economy, combustion gas--Combined Cycle Power Plant has also obtained fairly large application, particularly in recent years, country for Optimization of Energy Structure, improve environmental pollution, utilize the clean energy resourcies such as transfering natural gas from the west to the east, East Sea oil gas and imported L NG (liquefied natural gas (LNG)), build a collection of large-scale combined-cycle power plant, can say combustion gas--Combined Cycle Power Plant has run into unprecedented opportunities in the development of China.
In China, thermal power generation be take conventional coal-burning power plant as main, and combustion gas--Combined Cycle Power Plant, generally for peaking operation pattern, is born the peakload of electrical network, this just requires combined-cycle power plant will possess the function of quick startup, and the automatic startup of Dui Quan factory is controlled and proposed high request.
At present, although the combined-cycle power plant of China has all adopted DCS (Distributed Control System (DCS)) to carry out the control of unit, but the DCS of most of combined-cycle power plants is program control still only to be rested on four layers of program control structure and (from lower floor, toward upper strata, is followed successively by: subgroup level device level → subgroup level → function group level → unit level), it is generally not high that full factory starts automaticity, when power plant receives the quick enabled instruction of network regulation, function group level, the operation of unit level often can only be depended on operations staff, and at HMI station (human interface station), upper manual operation completes, the drawback that this operator scheme is brought has: along with the increase of Combined Cycle Unit installed capacity, increasing of opertaing device, the complexity of controlling and the intensity of operation are also increasing, a large amount of manual operations is difficult to avoid error, the startup boundary condition of unit is difficult to guarantee, such as the step-up ratio of waste heat boiler drum,, the boundary conditions such as the rate of temperature rise of steam turbine, load up rate can only be controlled artificially, is difficult to assurance not out-of-limit, has accelerated the life consumption of unit, analog quantity the control loop poor effect, particularly the Water Level Control of Steam of unit, steam by-pass are controlled the whole-process automatic while being difficult to realize start-up course, increase the chaser risk of unit, as steam water-level regulates the improper water level causing out-of-limit and cause chaser automatically, unit starting overlong time, declines business efficiency to some extent.
Summary of the invention
The technical problem to be solved in the present invention is to provide automatic start controller, power plant starts control system and control method thereof automatically, automatic start controller is in the present invention to three of Combined Cycle Unit large host computer system (combustion machines, waste heat boiler and steam turbine) set up respectively relatively independent promoter module, on the main flow of automatic start controller according to the different operating mode (cold conditions of unit, warm state, hot) and Starting mode (1+1+1 startup, 2+2+1 starts), the mode that employing plays with building blocks is called each promoter module flexibly, thereby realize a whole set of unit automatically and efficiently starting under different operating modes.
For achieving the above object, technical scheme of the present invention is as follows:
Automatic start controller, it,, for controlling the unit that comprises host computer system and backup system, comprising:
One unit starting condition judgment module, it is for judging whether described unit meets entry condition described unit is carried out to automatically start control;
One backup system starts module, and it is for starting control to the backup system of assisting host computer system to start;
One start-up mode judge module, it is for selecting the unit starting pattern of described automatic start controller according to host computer system feedack;
One starts module, and it is for starting control according to the promoter module of selected unit starting mode invocation unit;
And one finish module, it for finishing the control of described automatic start controller after described unit starting success load up reach target load.
In a preferred embodiment of the invention, described unit starting pattern comprises the first start-up mode, and it is for starting the host computer system that comprises a combustion machine, a waste heat boiler and a steam turbine.
In a preferred embodiment of the invention, described unit starting pattern comprises the second start-up mode, and it is for starting the host computer system that comprises two combustion machines, two waste heat boilers and a steam turbine.
In a preferred embodiment of the invention, unit described in described the second start-up mode comprises that cold start, warm state start or hot starting, hot start.
In a preferred embodiment of the invention, the mutually nested operation of promoter module of described unit.
In a preferred embodiment of the invention, the promoter module of described unit comprises combustion machine promoter module, waste heat boiler promoter module and steam turbine promoter module.
In a preferred embodiment of the invention, described combustion machine promoter module comprises 7 breakpoints of order operation, specific as follows:
Breakpoint 1, checks whether combustion machine possesses entry condition;
Breakpoint 2, starts combustion machine and sends combustion machine startup initializing signal to automatic start controller;
Breakpoint 3, combustion machine is unloaded at full speed;
Breakpoint 4, combustion machine is grid-connected;
Breakpoint 5, combustion machine cuts out a mouthful temp-controled mode;
Breakpoint 6, combustion machine is cut external load control model;
Breakpoint 7, combustion machine load up.
In a preferred embodiment of the invention, described waste heat boiler promoter module comprises 5 breakpoints of order operation, specific as follows:
Breakpoint 1, check whether waste heat boiler possesses entry condition, and the boiler relevant device that automatic start controller will be controlled is switched to auto state;
Breakpoint 2, starts feed pump subgroup, and automatic start controller sends instructions to feed pump subgroup, and feed pump subgroup starts automatically;
Breakpoint 3, opens gas baffle and arrives a certain middle aperture, and waste heat boiler prepares to receive the tail flue gas of combustion machine, and sends waste heat boiler startup initializing signal to automatic start controller;
Breakpoint 4, opens waste heat boiler to the steam cut-off gate of steam main, carries out heating coil;
Breakpoint 5, according to the drum curve that boosts, automatic start controller opens gradually large gas baffle until fully open position.
In a preferred embodiment of the invention, described steam turbine promoter module comprises 6 breakpoints of order operation, specific as follows:
Breakpoint 1, checks whether steam turbine possesses entry condition;
Breakpoint 2, steam turbine resets and starts ATC and starts red switch;
Breakpoint 3, steam turbine raising speed;
Breakpoint 4, steam turbine same period;
Breakpoint 5, steam turbine load up to bypass door is closed;
Breakpoint 6, steam turbine drops into IPC and controls.
In a preferred embodiment of the invention, also comprise a protection module, it for automatically stopping the control of described automatic start controller when described unit breaks down.
In a preferred embodiment of the invention, a manual intervention interface is also set in described automatic start controller, this manual intervention interface is for accepting manual command and the breakpoint of each module of automatic start controller being controlled.
Power plant starts control system automatically, and it comprises according to the automatic start controller described in claim 1 to 11 any one claim, it is characterized in that:
Also comprise a dcs, described automatic start controller communication is connected to this dcs to realize the control to field apparatus.
In a preferred embodiment of the invention, described automatic start controller is the controller that other controller that is independent of described dcs arranges.
In a preferred embodiment of the invention, described automatic start controller is provided with the interface being connected with the load distribution subsystem communication of described dcs.
In a preferred embodiment of the invention, described automatic start controller is provided with the sequence subsystem communication connecting interface with described dcs.
In a preferred embodiment of the invention, described automatic start controller is provided with the analog quantity control subsystem communication connecting interface with described dcs.
In a preferred embodiment of the invention, a manual intervention interface is also set in described automatic start controller, this manual intervention interface is for accepting manual command and the breakpoint of each module of automatic start controller being controlled.
In a preferred embodiment of the invention, described manual intervention interface accepts to force steering order, manual intervention breakpoint make system without etc. to be feedbackly meet, automatic start controller can down be carried out.
In a preferred embodiment of the invention, described manual intervention interface is accepted to suspend steering order, even if manual intervention breakpoint meets system feedback, automatic start controller is still waited at this breakpoint.
In a preferred embodiment of the invention, manual intervention interface accepts to continue steering order, i.e. manual intervention, at the breakpoint of halted state, after feedback meets, down carries out automatic start controller.
In a preferred embodiment of the invention, manual intervention interface is accepted Autostep instruction, i.e. manual intervention breakpoint and make automatic start controller skip this breakpoint down to carry out.
The control method of automatic start controller, it,, for starting the genset that comprises host computer system and backup system, is characterized in that comprising the following steps:
Step 1, first judges whether unit to be started meets entry condition, if meet entry condition, automatic start controller carries out automatically starting and controlling to described unit;
Step 2, carries out pipeline start up by preheating to backup system;
Step 3, selects the unit starting pattern of described automatic start controller according to host computer system feedack;
Step 4, according to the unit starting pattern of selecting, the promoter module of calling corresponding unit starts control;
Step 5 finishes the control of described automatic start controller after the success of described unit starting load up reach target load.In a preferred embodiment of the invention, also the nested generator protection that is provided with returns to step, and it stops the control of automatic start controller when unit breaks down.
In a preferred embodiment of the invention, the mutually nested operation of promoter module of described unit.
In a preferred embodiment of the invention, described unit starting pattern comprises the first start-up mode, and this pattern is for starting the host computer system that comprises a combustion machine, a waste heat boiler and a steam turbine.
In a preferred embodiment of the invention, described unit starting pattern comprises the second start-up mode, and this pattern is for starting the host computer system that comprises two combustion machines, two waste heat boilers and a steam turbine.By technique scheme, the invention has the beneficial effects as follows:
Automatic start controller adopts modular design, mates flexibly each unit starting pattern and each promoter module, and the mutually nested operation of each promoter module, can save the unit starting time;
Thereby further reduce operations staff's working strength, avoid operations staff to make mistakes in chaos, avoid the working medium wastes such as steam;
While making unit starting, approach as far as possible the design parameter of equipment, slow down the life consumption of unit; While making unit starting, each system operates in secure border, reduces potential chaser risk.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the principle of work block diagram of self-starting device of the present invention.
Fig. 2 is the principle of work block diagram of combustion machine promoter module of the present invention.
Fig. 3 is the principle of work block diagram of waste heat boiler promoter module of the present invention.
Fig. 4 is the principle of work block diagram of steam turbine promoter module of the present invention.
Fig. 5 is that hardware platform of the present invention is implemented schematic diagram.
Fig. 6 is principle of work block diagram of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
With reference to Fig. 1, automatic start controller 100, it,, for controlling the unit that comprises host computer system and backup system, comprising:
One unit starting condition judgment module 101, it is for judging whether described unit meets entry condition described unit is carried out to automatically start control;
One backup system starts module 102, and it is for starting control to the backup system of assisting host computer system to start;
One start-up mode judge module 103, it is for selecting the unit starting pattern of described automatic start controller according to host computer system feedack;
One starts module 104, and it is for starting control according to the promoter module of selected unit starting mode invocation unit;
And one finish module 105, it for finishing the control of described automatic start controller after described unit starting success load up reach target load.
Also comprise a protection module, it for automatically stopping the control of described automatic start controller when described unit breaks down.
One manual intervention interface is also set in described automatic start controller, and this manual intervention interface is for accepting manual command and the breakpoint of each module of automatic start controller being controlled.
Above-mentioned unit starting pattern comprises the first start-up mode and the second start-up mode according to the quantity of the host computer system of unit, and wherein the first start-up mode is for starting the host computer system that comprises a combustion machine, a waste heat boiler and a steam turbine; Wherein the second start-up mode is for starting the host computer system that comprises two combustion machines, two waste heat boilers and a steam turbine.
Wherein, in the second start-up mode, described unit also comprises that cold start, warm state start or hot starting, hot start.
The promoter module of unit comprises combustion machine promoter module, waste heat boiler promoter module and steam turbine promoter module in the present invention, the mutually nested operation of above-mentioned each promoter module.
Automatic start controller can adopt APS controller in the present invention, and is directed to the automatic startup control system part in APS controller.
With reference to Fig. 2, combustion machine promoter module comprises 7 breakpoints of order operation, specific as follows:
Breakpoint 1, checks whether combustion machine possesses entry condition;
Breakpoint 2, starts combustion machine and sends combustion machine startup initializing signal to automatic start controller;
Breakpoint 3, combustion machine is unloaded at full speed;
Breakpoint 4, combustion machine is grid-connected;
Breakpoint 5, combustion machine cuts out a mouthful temp-controled mode;
Breakpoint 6, combustion machine is cut external load control model;
Breakpoint 7, combustion machine load up.
With reference to Fig. 3, waste heat boiler promoter module comprises 5 breakpoints of order operation, specific as follows:
Breakpoint 1, check whether waste heat boiler possesses entry condition, and the boiler relevant device that automatic start controller will be controlled is switched to auto state;
Breakpoint 2, starts feed pump subgroup, and automatic start controller sends instructions to feed pump subgroup, and feed pump subgroup starts automatically;
Breakpoint 3, opens gas baffle and arrives a certain middle aperture, and waste heat boiler prepares to receive the tail flue gas of combustion machine, and sends waste heat boiler startup initializing signal to automatic start controller;
Breakpoint 4, opens waste heat boiler to the steam cut-off gate of steam main, carries out heating coil;
Breakpoint 5, according to the drum curve that boosts, automatic start controller opens gradually large gas baffle until fully open position.
With reference to Fig. 4, steam turbine promoter module comprises 6 breakpoints of order operation, specific as follows:
Breakpoint 1, checks whether steam turbine possesses entry condition;
Breakpoint 2, steam turbine resets and starts ATC and starts red switch;
Breakpoint 3, steam turbine raising speed;
Breakpoint 4, steam turbine same period;
Breakpoint 5, steam turbine load up to bypass door is closed;
Breakpoint 6, steam turbine drops into IPC and controls.
In conjunction with above-mentioned Fig. 1-Fig. 4, the control method of automatic start controller, it,, for starting the genset that comprises host computer system and backup system, is characterized in that comprising the following steps:
Step 1, first judges whether unit to be started meets entry condition, if meet entry condition, automatic start controller carries out automatically starting and controlling to described unit;
Step 2, carries out pipeline start up by preheating to backup system, and backup system is used for assisting host computer system to start in the present invention;
Step 3, selects the unit starting pattern of described automatic start controller according to host computer system feedack;
Step 4, according to the unit starting pattern of selecting, the promoter module of calling corresponding unit starts control;
Step 5 finishes the control of described automatic start controller after the success of described unit starting load up reach target load.
In above-mentioned control procedure, also the nested generator protection that is provided with returns to step, and it stops the control of automatic start controller when unit breaks down.
The mutually nested operation of promoter module of above-mentioned unit, and unit starting pattern comprises the first start-up mode, this pattern is for starting the host computer system that comprises a combustion machine, a waste heat boiler and a steam turbine.
This unit starting pattern comprises the second start-up mode, and this pattern is for starting the host computer system that comprises two combustion machines, two waste heat boilers and a steam turbine.
In actual application, automatic start controller can be used separately, or possesses the control system co-ordination of certain automatic capability with all the other, PLC for example, dcs DCS.
Below take the power plant that automatic start controller and dcs DCS apply formation mutually starts control system automatically as example analysis:
Automatic start controller and dcs DCS implement hardware platform:
In the OC6000e of dcs DCS platform or MarkVIe system, implement, the DCS of every cover unit increases the automatic start controller of a pair of redundancy each other and implements Logical Configuration, and conventional controller accepts by data communication network the steering order that automatic start controller sends.
Other controllers of the hardware configuration of automatic start controller and dcs DCS are identical, are hung on the data communication network of DCS, and difference is mainly the Logical Configuration part of software.
Automatic start controller is the controller that other controller that is independent of described dcs arranges; It does not directly control field apparatus, and field apparatus sending controling instruction and receiving feedback signals are all completed by the existing controller of DCS.
With reference to Fig. 5, particular hardware framework is as follows: power plant starts control system automatically, comprising:
One with dcs DCS200,
One automatic start controller 100, this automatic start controller 100 is by data communication network 400 access dcs DCS200, thus the control of realization to field apparatus, in diagram, automatic start controller quantity is two, redundancy setting each other;
One HMI station 300, this HMI station 300 and automatic start controller 100 interactive information, show automatic start controller current state, steering order, warning message, and accept the manual intervention operation instruction of operations staff;
Dcs DCS200 includes DCS conventional controller 201, the IO plate 203 being connected by IO bus 202 with DCS conventional controller, and 203 pairs of each equipment of scene of IO plate are controlled.
Wherein as required, automatic start controller also arranges a plurality of network communication interfaces compatible with other system dcs DCS, specifically comprises:
And the interface of Load Distribution System (LDC): set up the interface between automatic start controller and LDC, make in automatic start controller start-up course, LDC can receive the signals such as load instruction that automatic start controller provides, load up rate to be come to each combustion machine load up, and final whole unit reaches the default target load of automatic start controller.
Interface with successive control system (SCS): as previously mentioned, automatic start controller belongs to the program control superlative degree of power plant's level Four--unit level (device level → subgroup level → function group level → unit level), whether automatic start controller is implemented smoothly, finally must be based upon below on the program control basis of 3 grades.And 3 grades of program control SCS categories that belong to below, so the interface of automatic start controller and SCS plays a function served as bridge, makes the breakpoint of each module of automatic start controller can start the program control of the corresponding function group of SCS, subgroup, and receives the program control feedback completing.
Interface with analog control system (MCS): MCS mainly comprises each PID regulating loop, and the interface of setting up between automatic start controller and MCS makes can successively each pid loop be arranged to setting value and drop into automatically by technological requirement in automatic start controller start-up course.Wherein, automatic start controller participates in the Water Level Control of Steam of MCS and steam by-pass control closely by interface, makes these two important loops can meet the automatically actuated requirement of unit.
In each module of automatic start controller, a plurality of startup breakpoints have been set; Breakpoint is automatically to start the process characteristics such as each subsystem execution order in control system start-up course and operational objective according to power plant, a whole set of unit starting sequential control logic is divided into can be intervened by operations staff a plurality of relatively independent, node that logical organization is similar, in each breakpoint logic, includes again the similar a plurality of execution step orders of logical organization.
Steering logic configuration independent operating is in automatic start controller, reduce the coupling between steering logic and systems such as successive control system SCS, analog control system MCS of other logics of dcs DCS, kept the independence of other original systems such as SCS, MCS as far as possible; Avoid causing original controller rate of load condensate to raise because steering logic configuration is built in the original controller of DCS; Facilitate design and artificial debugging in the factory of steering logic.
One manual intervention interface is wherein also set in automatic start controller, and this manual intervention interface is for accepting manual command and the breakpoint of each module of automatic start controller being controlled; Manual intervention interface can be accepted four kinds of steering orders:
Force steering order, manual intervention breakpoint make system without etc. to be feedbackly meet, automatic start controller can down be carried out.
Suspending steering order, is that manual intervention breakpoint meets system feedback even if suspend steering order, and automatic start controller is still waited at this breakpoint.
Continue steering order, i.e. manual intervention, at the breakpoint of halted state, after feedback meets, down carries out automatic start controller.
And Autostep instruction, i.e. manual intervention breakpoint and make automatic start controller skip this breakpoint down to carry out.
With reference to Fig. 6, for power plant starts an embodiment of control system automatically, in this embodiment, adopt modular design, mate flexibly the various unit starting patterns such as 1+1+1 startup, 2+2+1 startup, wherein 2+2+1 starts cold start-up, warm startup, the warm start mode of comprising.
In the present embodiment, unit starting pattern comprises 4 kinds of different start-up mode, be specially 1+1+1 and start, and 2+2+1/ hot starting, hot start, the warm state of 2+2+1/ starts and 2+2+1/ cold start; Each start-up mode has been called each promoter module according to different permutation and combination, and in certain start-up course of power plant, power plant automatically starts the main flow of control system and selects Yi Ge branch and can only select Yi Ge branch to carry out.
In this embodiment, 4 kinds of different start-up mode specifically use the modules such as the first combustion machine promoter module, the second combustion machine promoter module, the first waste heat boiler promoter module, the second waste heat boiler promoter module, steam turbine promoter module;
Under 1+1+1 start-up mode, first call the waste heat boiler promoter module of choosing, waste heat boiler baffle plate calls the combustion machine promoter module of choosing after opening, finally call steam turbine promoter module.
Under 2+2+1 warm start pattern, call two waste heat boiler promoter modules simultaneously, after two waste heat boiler baffle plates are opened, call two combustion machine promoter modules, finally call steam turbine promoter module.
Under the warm start-up mode of 2+2+1, first call the first waste heat boiler promoter module, after the first waste heat boiler baffle plate is opened, call the first combustion machine promoter module; Then the first combustion machine grid-connected after, call the second waste heat boiler promoter module, after the second waste heat boiler baffle plate is opened, call the second combustion machine promoter module; Finally call steam turbine promoter module.
Under 2+2+1 cold start mode, first call the first waste heat boiler promoter module, after the first waste heat boiler baffle plate is opened, call the first combustion machine promoter module, then call steam turbine promoter module; After the grid-connected certain hour of steam turbine, call the second waste heat boiler promoter module, the second waste heat boiler baffle plate calls the second combustion machine promoter module after opening.
In power plant, automatically start in control system, automatic start controller is also realized whole-process automatic control to important PID regulating loop.For example, for feedwater control loop, automatic start controller can be revised PID setting value, controlling steam water-level starts according to set rate automatic-ascending from priming level, considered during this time the impact of drum false water level, steam water-level is stabilized on normal working water level the most at last, and in all range feedwater automated procedure, the unperturbed that automatically completes single pulse, three momentum patterns switches and the unperturbed of 30% feed water by-pass door, 100% feed water by-pass door switches;
For steam by-pass control loop, automatic start controller is placed in the minimum aperture control model of valve at first, meets the heating coil requirement of jet chimney; Then, according to the drum of the waste heat boiler curve modification PID setting value of boosting, meet the requirement of drum step-up ratio; During steam turbine red switch, carry out level pressure control; When unit normally moves, in sliding pressure operation pattern, bypass pressure set points is from motion tracking vapor pressure an additional forward bias, and while guaranteeing steam turbine sliding pressure operation, bypass valve is in complete shut-down position.
Automatic start controller is controlled by intervening the whole process of important regulating loop, can greatly alleviate operations staff's working strength, avoids human error, avoids the meaningless waste of working medium, improves economy of power plant benefit.
In summary it can be seen, automatic start controller adopts the advantage of modular design to be: improve reuse of code, reduce design, debugging and maintenance workload:
For example in four branched structures of the main flow of automatic start controller, all called steam turbine promoter module, if according to conventional design method, not by submodule of the independent design of steam turbine start-up course, the Si Ge branch that automatic start controller starts all will add respectively six breakpoints that steam turbine starts, cause the repeatability of code, automatic start controller structure becomes too fat to move; And if in automatic start controller design, debugging and maintenance process, wish to revise, increase or delete in steam turbine start-up course a breakpoint, need to be in the repetitive operation of the Si Ge of automatic start controller main flow branch.In addition, according to modular design, also can make automatic start controller flow process more clear.
At automatic start controller main flow, it between each promoter module, is nested operation, for example in " 2+2+1/ cold conditions ", start branch, when automatic start controller main flow has called after the first waste heat boiler promoter module, the all breakpoints that do not need to wait for waste heat boiler promoter module complete and just go to call the first combustion machine promoter module, but after the 3rd breakpoint of waste heat boiler promoter module " opened stack damper and sent and start initializing signal " and finish, go to call the first combustion machine promoter module, its principle of design is to follow technological requirement as far as possible, save as far as possible power plant's overall startup time.
By above technical scheme, the present invention further reduces operations staff's working strength, avoids operations staff to make mistakes in chaos; Reduce a whole set of unit starting time, avoid the working medium wastes such as steam; While making unit starting, approach as far as possible the design parameter of equipment, slow down the life consumption of unit; While making unit starting, each system operates in secure border, reduces potential chaser risk.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (26)
1. automatic start controller, it for controlling the unit that comprises host computer system and backup system, is characterized in that, comprising:
One unit starting condition judgment module, it is for judging whether described unit meets entry condition described unit is carried out to automatically start control;
One backup system starts module, and it is for starting control to the backup system of assisting host computer system to start;
One start-up mode judge module, it is for selecting the unit starting pattern of described automatic start controller according to host computer system feedack;
One starts module, and it is for starting control according to the promoter module of selected unit starting mode invocation unit;
And one finish module, it for finishing the control of described automatic start controller after described unit starting success load up reach target load.
2. automatic start controller according to claim 1, is characterized in that: described unit starting pattern comprises the first start-up mode, and it is for starting the host computer system that comprises a combustion machine, a waste heat boiler and a steam turbine.
3. automatic start controller according to claim 1, is characterized in that: described unit starting pattern comprises the second start-up mode, and it is for starting the host computer system that comprises two combustion machines, two waste heat boilers and a steam turbine.
4. automatic start controller according to claim 3, is characterized in that: unit described in described the second start-up mode comprises that cold start, warm state start or hot starting, hot start.
5. automatic start controller according to claim 1, is characterized in that: the mutually nested operation of promoter module of described unit.
6. automatic start controller according to claim 5, is characterized in that: the promoter module of described unit comprises combustion machine promoter module, waste heat boiler promoter module and steam turbine promoter module.
7. automatic start controller according to claim 6, is characterized in that: described combustion machine promoter module comprises 7 breakpoints of order operation, specific as follows:
Breakpoint 1, checks whether combustion machine possesses entry condition;
Breakpoint 2, starts combustion machine and sends combustion machine startup initializing signal to automatic start controller;
Breakpoint 3, combustion machine is unloaded at full speed;
Breakpoint 4, combustion machine is grid-connected;
Breakpoint 5, combustion machine cuts out a mouthful temp-controled mode;
Breakpoint 6, combustion machine is cut external load control model;
Breakpoint 7, combustion machine load up.
8. automatic start controller according to claim 6, is characterized in that: described waste heat boiler promoter module comprises 5 breakpoints of order operation, specific as follows:
Breakpoint 1, check whether waste heat boiler possesses entry condition, and the boiler relevant device that automatic start controller will be controlled is switched to auto state;
Breakpoint 2, starts feed pump subgroup, and automatic start controller sends instructions to feed pump subgroup, and feed pump subgroup starts automatically;
Breakpoint 3, opens gas baffle and arrives a certain middle aperture, and waste heat boiler prepares to receive the tail flue gas of combustion machine, and sends waste heat boiler startup initializing signal to automatic start controller;
Breakpoint 4, opens waste heat boiler to the steam cut-off gate of steam main, carries out heating coil;
Breakpoint 5, according to the drum curve that boosts, automatic start controller opens gradually large gas baffle until fully open position.
9. automatic start controller according to claim 6, is characterized in that: described steam turbine promoter module comprises 6 breakpoints of order operation, specific as follows:
Breakpoint 1, checks whether steam turbine possesses entry condition;
Breakpoint 2, steam turbine resets and starts ATC and starts red switch;
Breakpoint 3, steam turbine raising speed;
Breakpoint 4, steam turbine same period;
Breakpoint 5, steam turbine load up to bypass door is closed;
Breakpoint 6, steam turbine drops into IPC and controls.
10. automatic start controller according to claim 1, is characterized in that: also comprise a protection module, it for automatically stopping the control of described automatic start controller when described unit breaks down.
11. automatic start controllers according to claim 1, it is characterized in that: a manual intervention interface is also set in described automatic start controller, and this manual intervention interface is for accepting manual command and the breakpoint of each module of automatic start controller being controlled.
12. power plant start control system automatically, and it comprises according to the automatic start controller described in claim 1 to 11 any one claim, it is characterized in that:
Also comprise a dcs, described automatic start controller communication is connected to this dcs to realize the control to field apparatus.
13. power plant according to claim 12 start control system automatically, it is characterized in that: described automatic start controller is the controller that other controller that is independent of described dcs arranges.
14. power plant according to claim 12 start control system automatically, it is characterized in that: described automatic start controller is provided with the interface being connected with the load distribution subsystem communication of described dcs.
15. power plant according to claim 12 start control system automatically, it is characterized in that: described automatic start controller is provided with the sequence subsystem communication connecting interface with described dcs.
16. power plant according to claim 12 start control system automatically, it is characterized in that, described automatic start controller is provided with the analog quantity control subsystem communication connecting interface with described dcs.
17. power plant according to claim 12 start control system automatically, it is characterized in that: a manual intervention interface is also set in described automatic start controller, and this manual intervention interface is for accepting manual command and the breakpoint of each module of automatic start controller being controlled.
18. power plant according to claim 17 start control system automatically, it is characterized in that, described manual intervention interface accepts to force steering order, manual intervention breakpoint make system without etc. to be feedbackly meet, automatic start controller can down be carried out.
19. power plant according to claim 17 start control system automatically, it is characterized in that: described manual intervention interface is accepted to suspend steering order, even if manual intervention breakpoint meets system feedback, automatic start controller is still waited at this breakpoint.
20. power plant according to claim 17 start control system automatically, it is characterized in that: manual intervention interface accepts to continue steering order, i.e. manual intervention, at the breakpoint of halted state, after feedback meets, down carries out automatic start controller.
21. power plant according to claim 17 start control system automatically, it is characterized in that: manual intervention interface is accepted Autostep instruction, i.e. manual intervention breakpoint and make automatic start controller skip this breakpoint down to carry out.
The control method of 22. automatic start controllers, it,, for starting the unit that comprises host computer system and backup system, is characterized in that comprising the following steps:
Step 1, first judges whether unit to be started meets entry condition, if meet entry condition, automatic start controller carries out automatically starting and controlling to described unit;
Step 2, carries out pipeline start up by preheating to backup system;
Step 3, selects the unit starting pattern of described automatic start controller according to host computer system feedack;
Step 4, according to the unit starting pattern of selecting, the promoter module of calling corresponding unit starts control;
Step 5 finishes the control of described automatic start controller after the success of described unit starting load up reach target load.
The control method of 23. automatic start controllers according to claim 22, is characterized in that: also the nested generator protection that is provided with returns to step, and it stops the control of automatic start controller when unit breaks down.
The control method of 24. automatic start controllers according to claim 22, is characterized in that: the mutually nested operation of promoter module of described unit.
The control method of 25. automatic start controllers according to claim 22, is characterized in that: described unit starting pattern comprises the first start-up mode, and this pattern is for starting the host computer system that comprises a combustion machine, a waste heat boiler and a steam turbine.
The control method of 26. automatic start controllers according to claim 22, is characterized in that: described unit starting pattern comprises the second start-up mode, and this pattern is for starting the host computer system that comprises two combustion machines, two waste heat boilers and a steam turbine.
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| CN201410292974.1A CN104062960A (en) | 2013-06-25 | 2014-06-25 | Automatic starting controller, power plant automatic starting control system and control method thereof |
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| CN201320368441 | 2013-06-25 | ||
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| CN201410292974.1A CN104062960A (en) | 2013-06-25 | 2014-06-25 | Automatic starting controller, power plant automatic starting control system and control method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105511420A (en) * | 2014-10-16 | 2016-04-20 | 浙江国华浙能发电有限公司 | Automatic control method of thermal power generator plant |
| CN105676802A (en) * | 2014-11-20 | 2016-06-15 | 国家电网公司 | Automatic plant startup and shutdown system |
| CN105676801A (en) * | 2014-11-20 | 2016-06-15 | 国家电网公司 | Automatic plant startup and shutdown system |
| CN106708006A (en) * | 2016-11-08 | 2017-05-24 | 北京国电智深控制技术有限公司 | Method and device for controlling heat collecting unit |
| CN110847986A (en) * | 2019-10-08 | 2020-02-28 | 华北电力科学研究院有限责任公司 | Start-stop lifting load control method and device for two-driving-one gas turbine combined cycle unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105511420A (en) * | 2014-10-16 | 2016-04-20 | 浙江国华浙能发电有限公司 | Automatic control method of thermal power generator plant |
| CN105676802A (en) * | 2014-11-20 | 2016-06-15 | 国家电网公司 | Automatic plant startup and shutdown system |
| CN105676801A (en) * | 2014-11-20 | 2016-06-15 | 国家电网公司 | Automatic plant startup and shutdown system |
| CN105676801B (en) * | 2014-11-20 | 2019-04-05 | 国家电网公司 | Unit is from start-stop control system |
| CN106708006A (en) * | 2016-11-08 | 2017-05-24 | 北京国电智深控制技术有限公司 | Method and device for controlling heat collecting unit |
| CN110847986A (en) * | 2019-10-08 | 2020-02-28 | 华北电力科学研究院有限责任公司 | Start-stop lifting load control method and device for two-driving-one gas turbine combined cycle unit |
| CN110847986B (en) * | 2019-10-08 | 2022-01-21 | 华北电力科学研究院有限责任公司 | Start-stop lifting load control method and device for two-driving-one gas turbine combined cycle unit |
| CN113970890A (en) * | 2021-11-10 | 2022-01-25 | 北京京能电力股份有限公司 | Thermal power generating unit automatic start-stop system based on digital simulation and development method thereof |
| CN114285072A (en) * | 2021-12-20 | 2022-04-05 | 上海电气燃气轮机有限公司 | Automatic sequential control method, system, terminal and medium for dual-node synchronization grid connection of heavy-duty gas turbine |
| CN114285072B (en) * | 2021-12-20 | 2023-11-24 | 上海电气燃气轮机有限公司 | Automatic sequential control method, system, terminal and medium for synchronous grid connection of heavy-duty gas turbine at double nodes |
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