CN102213950B - Implementation method for self-starting and stopping control system of machine set - Google Patents
Implementation method for self-starting and stopping control system of machine set Download PDFInfo
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- CN102213950B CN102213950B CN 201110125758 CN201110125758A CN102213950B CN 102213950 B CN102213950 B CN 102213950B CN 201110125758 CN201110125758 CN 201110125758 CN 201110125758 A CN201110125758 A CN 201110125758A CN 102213950 B CN102213950 B CN 102213950B
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Abstract
The invention provides an implementation method for a self-starting and stopping control system of a machine set, and the method is characterized by comprising the following steps: firstly, receiving starting signals or stopping signals through the function set which is positioned at a first layer; then, sequentially judging whether the permissive conditions of the starting are met or not or the permissive conditions of the stopping are met or not, whether initialization signals exist or not, whether interruption signals exist and whether feedback signals exist; and then, starting to implement a breakpoint layer which is positioned at a second layer, wherein the implementation command of the second layer is the same as that of the first layer. Compared with the existing method, the method provided by the invention has the following advantages: 1, the dependence on the driving stage of equipment can be greatly reduced, and the debugging efficiency is enhanced; 2, the modification flexibility of a function set is increased; and 3, the implementation method provided by the invention is also suitable for a commissioning machine set.
Description
Technical field
The present invention relates to a kind of fired power generating unit Distributed Control System, relate in particular to a kind of unit from the programming implementation method of start-stop control system.
Background technology
It is divided into several breakpoints (function group) with unit starting process and de-activation procedure and automatically finishes unit starting or inactive whole process unit from start-stop control system (Automatic Plant Startup and Shutdown System, be called for short APS).It can prevent to greatest extent that not only the people from being maloperation, greatly improve correctness, standardization, the high efficiency of unit operation, and can greatly alleviate operations staff's working strength, and shorten the time of Unit Commitment control, improve on the whole the automatization level of unit.At present China is owing to reasons such as the reliability of thermal control equipment and automatic control levels, and domestic APS also is in the research trial run stage, and its design, implementation method are that recent thermal technology controls one of focus of research.The whole control structure of APS function group is divided into three layers, is followed successively by from top to bottom APS activation/deactivation function group, breakpoint, equipment key-course.In Distributed Control System (DCS) (being called for short DCS) design in the past, the realization of APS function need to increase configuration, and its control structure as shown in Figure 1.APS starts or the disable function group sends instructions to breakpoint, breakpoint by sending instructions calls other merit device drives and finishes.Solid line among the figure represents the method that configuration realizes, i.e. the essential configuration recalls information that increases breakpoint in the equipment; Breakpoint need increase the configuration info of function group.There was following shortcoming in implementation method in the past:
1, require the design phase to finish perfect APS design.The realization of APS need to send instructions from top to bottom from function group, breakpoint, device level and realize to bottom device drives level.If design imperfection, revised context relate to function group, breakpoint, device level various piece, revise length consuming time, workload is huge.And the design of domestic DCS steering logic is all taken into account by configuration producer and finishes, the DCS system Construction just carries out after the 5th batch of electric power factory equipment purchase bidding usually, this means determining from the DCS instrument, through the I/O inventory determine, I/O has assigned, steering logic designs, control configuration is accomplished to system and dispatches from the factory, and generally only has half a year～one's year left and right sides time.The design of steering logic and definite also with regard to about 1～2 month, the way of this routine is difficult to the design effort of the huge APS system of the amount of finishing the work.This also is one of present domestic APS reason of being difficult to realize.
2, increase the workload of debugging.According to the order of thermal control debugging work, debugging through debugging breakpoints, is finished APS layer function group at last from the underlying device driving stage.Configuration implementation method in the past can cause debugging work to repeat, and increases debugging work load.Namely when APS function group is debugged, revise merit breakpoint that direct impact debugged or the modification of device drives level logic, cause the debugging that repeats of this part work, greatly increase the debugging workload in period.This duration of a project for domestic fired power generating unit anxiety makes the matter worse beyond doubt.This also is to hinder one of key factor that APS realizes in the DCS system at home.
3, the function group is revised inconvenient.Because the function group is comprised of a series of sequenced step instructions, if need to add a step, subsequent breakpoint or equipment group step instruction configuration all need to be delayed a step, very dumb.
4, be unfavorable for the putting into operation APS function modifications of unit.For the unit that has put into operation, driving stage and partial function group have been debugged and have been come into operation, increase the APS function by previous methods, need to revise the logic that existing all devices drives, greatly increase the work of configuration and debugging, add the limited unit maintenance time, the APS control of unit becomes impossible so that realization puts into operation.
Summary of the invention
The purpose of this invention is to provide a kind of dependence that greatly reduces the device drives level, improve the dirigibility that the function group is revised, simultaneously, the unit of the unit that is applicable to put into operation is from the implementation method of start-stop control system.
In order to achieve the above object, technical scheme of the present invention has provided a kind of unit from the implementation method of start-stop control system, by the APS program control center, control procedure according to power plant, simultaneously to the judgement of power plant's operational factor, allow the equipment of original dispersion obtain Organic unity, reach unit from the purpose of start and stop, wherein, the APS program control center judges that by very many logics body forms, each logic judgement body is finished single task role, judge the result of body set by the APS program control center according to logic, again according to the judgement of procedure parameter, get through or off device between the path, reach unit from the purpose of start and stop, it is characterized in that: each described logic judges that body may further comprise the steps:
Step 1, reception enabled instruction
The enabled condition that step 2, judgement start if satisfy then execution in step 3, does not satisfy and then returns step 1;
Step 3, judged whether initializing signal, if having then return step 1, execution in step 4 then not;
Step 4, judged whether look-at-me, if having then wait in position until this look-at-me disappears, execution in step 5 then not;
Whether the feedback signal that step 5, judgement receive from equipment meets the demands, if meet the demands then skips steps 6 execution in step 7, if do not satisfy then execution in step 6;
The instruction of step 6, the operation of execution relevant device starts corresponding equipment, and provides feedback signal;
Step 7, timing, if receive the feedback signal that meets the demands in setting time then enter next breakpoint or next from start-stop control system activation/deactivation function group and repeat above each step, do not receive satisfied feedback require then to carry out the newspaper fault and etc. pending.
Method of the present invention and previous methods relatively have following advantage: 1, can greatly reduce the dependence to the device drives level, improve debugging efficiency.The invention enables the work of first, second and third layer in the APS structure separate, can progressively realize the APS function according to the length of debug time.The operator just can finish unit operation with manual manipulation mode after finishing the control of three-layer equipment level during debugging, during debugging second layer breakpoint with the complete independence of three-layer equipment level control, adopt programming mode directly in the finishing equipment control that sends instructions of the interface of original operator's operation because be, so the modification that relates to during second layer debugging only limits in second layer program, bring great convenience for debugging work.Even can disperse the second layer and ground floor debugging work according to system's significance level and debugging duration, can progressively realize the APS function.
2, increased the dirigibility that the function group is revised.Because the realization of second layer breakpoint and the first function group all adopts programming mode to finish, the modification of middle any one function group only needs update routine just can finish, to increase single stepping very inconvenient in the past, need to revise successively subsequent instructions, this method only needs to insert a step process program and can realize in program.
3, the applicable equally unit that puts into operation of the present invention.The present invention realizes that the APS function need not revise original device level of having debugged and drive, as long as just can realize at this basis increase second layer breakpoint and ground floor APS function group layer, this realizes the APS function for the unit that puts into operation, and a kind of effective method that provides of thermal control automatization level is provided.
Description of drawings
Fig. 1 is the APS hierarchical chart;
Fig. 2 is the control structure of in the past APS realization;
Fig. 3 is the control structure that the programming adopted of the present invention realizes the APS function;
Fig. 4 is breakpoint (function group) programming block diagram that the present invention adopts;
Embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment
The method that the invention provides with programming realizes the APS function.Concrete scheme is as follows: be on the basis of device drives level or part sequence function group the 3rd layer of original APS, do not change the 3rd layer of configuration content, realize the function of second layer breakpoint layer and ground floor APS function group with the method for programming.
As shown in Figure 3, the content of invention is the APS program control center in the frame, for programming realizes, does not need to increase actual configuration, directly replaces the operator to send instructions with program and finishes function.The method that ground floor and the second layer are realized among Fig. 1 is similar, and the object that just calls is different.
A kind of unit provided by the invention is from the implementation method of start-stop control system, by the APS program control center, according to the control procedure of power plant, simultaneously to the judgement of power plant's operational factor, allow the equipment of original dispersion obtain Organic unity, reach unit from the purpose of start and stop:
1. the APS program control center judges that by very many logics body forms, and each logic judgement body is finished single task role.
2. first breakpoint in the unit self-triggered program (having 6 breakpoints) is as example, and each following exemplary step all has one or more logics to judge bodies, in conjunction with Fig. 4, the steps include:
Step 1, reception enabled instruction
Step 2, circulation and close chilled water system and start;
Step 2.1, open A/B condenser access doors, close A/B condenser outlet portal, close the open circulation access doors, close the open circulation outlet portal;
Step 2.2, open A/B condenser outlet portal 8%;
Step 2.3, throwing follow pump A sequence;
Step 2.4, throwing open circulation water system are opened A/B condenser outlet portal 35%;
Step 2.5, throwing follow pump B sequence;
Step 2.6, open the outlet of sufficient A/B condenser;
Step 2.7, throwing hydroecium vacuum pump system;
Step 2.8, throwing closed circle water system;
Step 2.9, open the closed cold pump sequence;
Step 2.10, throw interlocking switch after prolonging 60S;
Step 3, the auxiliary vapour of unit system start;
Step 4, electric dust removing system start;
Step 5, low-temperature heater system start;
Step 5.1, #7 and #8 low-temperature heater open in advance;
Step 5.2, #6 low-temperature heater open in advance;
Step 5.1, #5 low-temperature heater open in advance;
Step 6, hydrophobic group of startup of steam turbine
Step 6.1, open hydrophobic group of backstage of cylinder body and provide for oneself;
Provide for oneself on step 6.2, hydrophobic group of backstage, open pipe road;
Step 6.3, open the hydrophobic group of backstage of drawing gas and provide for oneself;
Step 7, solidifying water group start
Step 7.1, open the small pump sequence;
Step 7.2, throwing condenser extra feed tank water level transfer valve automatic;
Step 7.3, open condenser minimum flow regulating valve 100%;
Step 7.4, solidifying pump sequence;
Step 7.5, throw interlocking switch after prolonging 60S;
Step 8, steam turbine oil system start
Step 8.1, startup steam turbine AC Lub oil pump;
Step 8.2, startup steam turbine grease-box induced-draft fan A/B;
Step 8.3, startup hydrogen-tight oil stand-by pump;
Step 8.4, startup EH oil pump;
Step 8.5, startup jacking(oil) pump;
Step 8.6, startup steam feed pump A main oil pump
Step 8.7, startup steam feed pump A oil extraction blower fan
Step 8.8, startup steam feed pump B main oil pump
Step 8.9, startup steam feed pump B main oil pump
Step 8.10, prolong and throw mutually standby interlocking switch behind the 60S
Step 9, generator utility appliance group start
Step 9.1, starter-generator stator cooling-water pump are thrown water tank moisturizing interlocking switch;
Step 9.2, the empty top-cross stream of starter-generator sealing oil pump;
Step 9.3, starter-generator hydrogen-side seal oil pump;
Step 9.4, the empty side oil return leakproof fuel cell induced-draft fan of startup;
Step 9.5, startup hydrogen system circulating fan;
Step 9.6, prolong and throw mutually standby interlocking switch behind the 60S;
Step 10, turbine barring gear group start
Step 10.1, the Turbine Barring Gears that starts;
Step 10.2, startup steam feed pump A cranking system;
Step 10.3, startup steam feed pump B cranking system;
Hydrophobic group of step 11, boiler
Provide for oneself on cigarette well draining valve backstage after step 11.1, the throwing;
Provide for oneself on step 10.2, throwing reheater draining valve backstage;
Step 10.3, throwing boiler steam bleeding behind the door platform are provided for oneself;
Provide for oneself on step 10.4, throwing superheater PCV valve backstage;
3. the APS program control center is judged the result of body set according to logic, again according to the judgement of procedure parameter, by it self interface section, get through or off device between the path, reach unit from the purpose of start and stop.
Claims (1)
1. a unit is from the implementation method of start-stop control system, by the APS program control center, APS is that unit is from start-stop control system, control procedure according to power plant, simultaneously to the judgement of power plant's operational factor, allow the equipment of original dispersion obtain Organic unity, reach unit from the purpose of start and stop, wherein, the APS program control center judges that by a plurality of logics body forms, each logic judgement body is finished single task role, judge the result of body set by the APS program control center according to logic, again according to the judgement of procedure parameter, get through or off device between the path, reach unit from the purpose of start and stop, it is characterized in that: each described logic judges that body may further comprise the steps:
Step 1, reception enabled instruction
The enabled condition that step 2, judgement start if satisfy then execution in step 3, does not satisfy and then returns step 1;
Step 3, judged whether initializing signal, if having then return step 1, execution in step 4 then not;
Step 4, judged whether look-at-me, if having then wait in position until this look-at-me disappears, execution in step 5 then not;
Whether the feedback signal that step 5, judgement receive from equipment meets the demands, if meet the demands then skips steps 6 execution in step 7, if do not satisfy then execution in step 6;
The instruction of step 6, the operation of execution relevant device starts corresponding equipment, and provides feedback signal;
Step 7, timing, if receive the feedback signal that meets the demands in setting time then enter next breakpoint or next from start-stop control system activation/deactivation function group and repeat above each step, do not receive satisfied feedback require then to carry out the newspaper fault and etc. pending.
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| CN 201110125758 CN102213950B (en) | 2011-05-16 | 2011-05-16 | Implementation method for self-starting and stopping control system of machine set |
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| CN 201110125758 CN102213950B (en) | 2011-05-16 | 2011-05-16 | Implementation method for self-starting and stopping control system of machine set |
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Families Citing this family (15)
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| CN103165207B (en) * | 2011-12-13 | 2015-12-09 | 中广核工程有限公司 | Be applicable to sequence control method and the system of nuclear power station |
| CN102681520B (en) * | 2012-06-04 | 2014-07-09 | 上海迪吉特控制系统有限公司 | Implementation method of operation interface of automatic plant start-up &and shut-down system |
| CN103439932B (en) * | 2013-08-12 | 2015-09-23 | 国家电网公司 | Fired power generating unit automatic start-stop control system increases and decreases the method for breakpoint in running |
| CN103472816B (en) * | 2013-08-29 | 2016-02-17 | 国家电网公司 | A kind of automatic start-stop detection method and system being applied to oil system |
| CN103616854B (en) * | 2013-10-24 | 2016-04-27 | 上海迪吉特控制系统有限公司 | Thermal power plant's monoblock is from the optimization implementation method of on off control logic |
| CN103823401B (en) * | 2014-03-05 | 2016-08-10 | 中国神华能源股份有限公司 | For the method and apparatus reported to the police in start-stop control system in unit level |
| CN103823395A (en) * | 2014-03-05 | 2014-05-28 | 中国神华能源股份有限公司 | Method and device for controlling breakpoint resume of set-grade automatic starting and stopping system |
| CN105676801B (en) * | 2014-11-20 | 2019-04-05 | 国家电网公司 | Unit is from start-stop control system |
| CN104597898B (en) * | 2015-02-03 | 2015-09-09 | 国家电网公司 | The method of fired power generating unit sequence control system automatic rejection fault |
| CN108490906B (en) * | 2017-05-12 | 2020-10-02 | 国电龙源电力技术工程有限责任公司 | Design method for improving DCS (distributed control System) control thermal power generating unit to have complete automatic start-stop function |
| CN107315405B (en) * | 2017-08-28 | 2023-12-12 | 山东中实易通集团有限公司 | Internet-based remote diagnosis system and method for unit self-starting control process |
| CN107976980B (en) * | 2017-11-25 | 2020-10-23 | 国网辽宁省电力有限公司电力科学研究院 | System and method for controlling one-key start and stop of large-scale phase modulator DCS |
| CN108873841A (en) * | 2018-06-29 | 2018-11-23 | 中国神华能源股份有限公司 | Control system, the method and apparatus of Unit Commitment |
| CN110593974B (en) * | 2019-10-31 | 2022-05-27 | 大唐郓城发电有限公司 | Automatic start-stop control system of unit |
| CN113202737B (en) * | 2021-05-24 | 2023-04-11 | 中核核电运行管理有限公司 | Start-stop control circuit for top shaft oil pump of steam turbine of nuclear power plant |
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