CN202383529U - Deoxygenator liquid level automatic adjusting and controlling apparatus for thermal power generator set - Google Patents
Deoxygenator liquid level automatic adjusting and controlling apparatus for thermal power generator set Download PDFInfo
- Publication number
- CN202383529U CN202383529U CN2011204396902U CN201120439690U CN202383529U CN 202383529 U CN202383529 U CN 202383529U CN 2011204396902 U CN2011204396902 U CN 2011204396902U CN 201120439690 U CN201120439690 U CN 201120439690U CN 202383529 U CN202383529 U CN 202383529U
- Authority
- CN
- China
- Prior art keywords
- oxygen
- liquid level
- eliminating device
- device liquid
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model relates to a deoxygenator liquid level automatic adjusting and controlling apparatus for a thermal power generator set, comprising a system monitoring module and a deoxygenator liquid level setting module which are both connected with each other through communication. According to the quality of monitoring signals and monitoring values, the deoxygenator liquid level is determined to be automatically adjusted and controlled by different adjusting and controlling modules, and according to the quality of the monitoring signals and the change of the monitoring values, the deoxygenator liquid level adjusting mode determination units automatically switched between the different adjusting and controlling modules and an automatic adjusting and controlling module used for tracking the current instructions of the deoxygenator liquid level and controlling the deoxygenator liquid level are determined. The deoxygenator liquid level automatic adjusting controlling apparatus can stably and automatically adjust the deoxygenator liquid level when the load of the thermal power generator set changes, thereby improving the safety of the thermal power generator set, reducing wearing and throttling loss under a minimum opening degree, avoiding mutual interference when valves simultaneously motion, and increasing the efficiency of the thermal power generator set.
Description
Technical field
The utility model relates to thermal power generation unit control technology field, is specifically related to the automatic control set for adjusting of a kind of thermal power generation unit oxygen-eliminating device liquid level.
Background technology
The adjusting of the liquid level of oxygen-eliminating device is the important component part of unit water supply system in the thermal power generation unit.The liquid level of oxygen-eliminating device is too high can to influence steam turbine safe operation (turbine water induction), and the liquid level of oxygen-eliminating device is low excessively, then possibly cause the feed pump cavitation, influences the safety of feed pump.The oxygen-eliminating device liquid level is regulated the liquid level unusual fluctuations that improper meeting causes oxygen-eliminating device.Under worse situation, can cause the oxygen-eliminating device liquid level too high or too low, thereby cause the unit cancel closedown.
Present stage; The oxygen-eliminating device liquid level of most of fired power generating unit control system is regulated and can't be realized omnidistance control; Need operations staff's manual intervention, especially for the large electric power plant unit of participating in network load adjustment and peaking operation, if the oxygen-eliminating device liquid level can not realize omnidistance control; The liquid level frequent fluctuation that can cause oxygen-eliminating device, safe operation brings no small hidden danger to set steady.
The oxygen-eliminating device liquid level is regulated, and is the important step of unit safety, stable, economical operation.It is stable that the oxygen-eliminating device liquid level is regulated, and improved the automatization level of unit, improved security, the economy of unit.
Summary of the invention
In order to overcome the shortcoming that above-mentioned prior art exists; The purpose of the utility model is to provide the automatic control set for adjusting of a kind of thermal power generation unit oxygen-eliminating device liquid level can reduce operations staff's manual intervention; Realize the stable adjusting automatically of adjusting of oxygen-eliminating device liquid level when unit load changes, improved the security of unit, can reduce wearing and tearing and the restriction loss of valve under little aperture; The phase mutual interference of having avoided valve to move has simultaneously improved unit efficiency.
To achieve these goals, the utility model adopts following technical scheme:
The automatic control set for adjusting of a kind of thermal power generation unit oxygen-eliminating device liquid level, comprise that mutual communication connects like lower module:
System monitoring module: be used for load instruction, oxygen-eliminating device liquid level and the oxygen-eliminating device entrance and exit flow signal of unit are monitored in real time;
Oxygen-eliminating device liquid level setting module: be used to produce oxygen-eliminating device liquid level setting value, can perhaps manually import and produce oxygen-eliminating device liquid level setting value according to producing oxygen-eliminating device liquid level setting value automatically when the preload instruction by the operations staff;
Oxygen-eliminating device liquid level regulative mode judging unit: be used for quality and monitor value according to monitor signal; Confirm that the oxygen-eliminating device liquid level regulates control automatically by the different adjustment control module; And, can between the different adjustment control module, automatically switch according to the quality of monitor signal and the variation of monitor value;
Automatically regulate control module: be used to follow the tracks of present instruction of oxygen-eliminating device liquid level and control oxygen-eliminating device liquid level.
Said system monitoring module comprises oxygen-eliminating device level monitoring module, unit load command monitoring module and oxygen-eliminating device inlet flow rate and oxygen-eliminating device outlet feedwater flow monitoring modular.
Said automatic adjusting control module comprises like lower module:
The secondary valve single pulse control module of transferring of oxygen-eliminating device liquid level: be used to follow the tracks of secondary valve present instruction and the control oxygen-eliminating device liquid level of transferring of oxygen-eliminating device liquid level;
Oxygen-eliminating device liquid level homophony valve single pulse control module: be used to follow the tracks of valve present instruction of oxygen-eliminating device liquid level homophony and control oxygen-eliminating device liquid level;
Oxygen-eliminating device liquid level homophony valve three momentum control modules: be used to follow the tracks of valve present instruction of oxygen-eliminating device liquid level homophony and control oxygen-eliminating device liquid level.
Pair accent valve in the secondary accent of homophony valve in said oxygen-eliminating device liquid level homophony valve single pulse control module or the oxygen-eliminating device liquid level homophony valve three momentum control modules and the oxygen-eliminating device liquid level valve single pulse control module only has a valve to participate in regulating: when system controls at the secondary accent of oxygen-eliminating device liquid level valve single pulse, and oxygen-eliminating device liquid level homophony valve complete shut-down; System is when oxygen-eliminating device liquid level homophony valve single pulse or the control of oxygen-eliminating device liquid level homophony valve three momentums, and oxygen-eliminating device liquid level pair is transferred the valve complete shut-down.
Said system monitoring module monitors arrives the parameter monitoring of participation adjusting to signal fault; Automatically switching to does not need fault-signal to participate in the adjustment module of regulating; Then keep system's present instruction output if can't switch to the adjustment module that does not need fault-signal to participate in regulating; After treating that system monitoring module monitors fault-signal recovers normally, system can return to the adjustment module of normal regulating and regulate.
The automatic control set for adjusting of thermal power generation unit oxygen-eliminating device liquid level of the present invention; The system monitoring module is monitored load instruction, oxygen-eliminating device liquid level and the oxygen-eliminating device entrance and exit flow signal of unit in real time; Oxygen-eliminating device liquid level regulative mode judging unit is according to the quality and the monitor value of monitor signal; Confirm that the oxygen-eliminating device liquid level regulates the different adjustment mode of control automatically; Under said various regulative modes, the secondary accent of oxygen-eliminating device liquid level homophony valve and oxygen-eliminating device liquid level valve only has a valve participation control valve to participate in regulating: when system controls at the secondary accent of oxygen-eliminating device liquid level valve single pulse, and oxygen-eliminating device liquid level homophony valve complete shut-down; System is when oxygen-eliminating device liquid level homophony valve single pulse or the control of oxygen-eliminating device liquid level homophony valve three momentums, and oxygen-eliminating device liquid level pair is transferred the valve complete shut-down.Reduced wearing and tearing and the restriction loss of valve under little aperture, the phase mutual interference of having avoided valve to move simultaneously is beneficial to and has improved unit efficiency.
Description of drawings
Fig. 1 is the system construction drawing of the automatic control set for adjusting preferred implementation of a kind of thermal power generation unit of the utility model oxygen-eliminating device liquid level.
Fig. 2 is that the regulative mode of the automatic adjustment control method of a kind of thermal power generation unit of the utility model oxygen-eliminating device liquid level is judged schematic diagram.
Fig. 3 is the secondary valve single pulse adjustment module control principle figure that transfers of oxygen-eliminating device when the oxygen-eliminating device pair is transferred valve single pulse regulative mode in the automatic adjustment control method of a kind of thermal power generation unit of the utility model oxygen-eliminating device liquid level.
Fig. 4 is oxygen-eliminating device homophony valve single pulse adjustment module control principle figure during oxygen-eliminating device homophony valve single pulse regulative mode in the automatic adjustment control method of a kind of thermal power generation unit of the utility model oxygen-eliminating device liquid level.
Fig. 5 is oxygen-eliminating device homophony valve three momentum adjustment module control principle figure during oxygen-eliminating device homophony valve three momentum regulative modes in the automatic adjustment control method of a kind of thermal power generation unit of the utility model oxygen-eliminating device liquid level.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done more detailed explanation.
As shown in Figure 1; The automatic control set for adjusting of a kind of thermal power generation unit of the utility model oxygen-eliminating device liquid level; Comprise oxygen-eliminating device liquid level setting module, oxygen-eliminating device level monitoring module, unit load command monitoring module, oxygen-eliminating device inlet flow rate and oxygen-eliminating device outlet feedwater flow monitoring modular, oxygen-eliminating device liquid level regulative mode judging unit, secondary valve single pulse control module, oxygen-eliminating device liquid level homophony valve single pulse control module and the oxygen-eliminating device liquid level homophony valve three momentum control modules of transferring of oxygen-eliminating device liquid level; Said oxygen-eliminating device liquid level setting module input end is communicated by letter with the output terminal of unit load command monitoring module and is connected; First input end, second input end and the 3rd input end of said oxygen-eliminating device liquid level regulative mode judging unit communicated by letter with the output terminal of oxygen-eliminating device outlet feedwater flow monitoring modular with oxygen-eliminating device level monitoring module, unit load command monitoring module and oxygen-eliminating device inlet flow rate respectively and is connected; The output terminal of said oxygen-eliminating device liquid level regulative mode judging unit is communicated by letter with the first input end of the secondary accent of oxygen-eliminating device liquid level valve single pulse control module, oxygen-eliminating device liquid level homophony valve single pulse control module and oxygen-eliminating device liquid level homophony valve three momentum control modules simultaneously and is connected; The output terminal of said oxygen-eliminating device liquid level setting module is communicated by letter with second input end of the secondary accent of oxygen-eliminating device liquid level valve single pulse control module, oxygen-eliminating device liquid level homophony valve single pulse control module and oxygen-eliminating device liquid level homophony valve three momentum control modules simultaneously and is connected; The output terminal of said oxygen-eliminating device level monitoring module is communicated by letter with the 3rd input end of the secondary accent of oxygen-eliminating device liquid level valve single pulse control module, oxygen-eliminating device liquid level homophony valve single pulse control module and oxygen-eliminating device liquid level homophony valve three momentum control modules simultaneously and is connected, and said oxygen-eliminating device inlet flow rate is communicated by letter with the four-input terminal of oxygen-eliminating device liquid level homophony valve three momentum control modules with the output terminal of oxygen-eliminating device outlet feedwater flow monitoring modular and is connected.
The principle of work of the automatic control set for adjusting of a kind of thermal power generation unit of the utility model oxygen-eliminating device liquid level is as shown in Figure 2; When the oxygen-eliminating device liquid level is regulated input; The system monitoring module judges that the oxygen-eliminating device liquid level has non-fault; If oxygen-eliminating device liquid level fault, then system keeps homophony valve and the present instruction of secondary accent valve, and oxygen-eliminating device liquid level pair transfers valve single pulse control module to follow the tracks of the present instruction of the secondary accent of oxygen-eliminating device liquid level valve, oxygen-eliminating device liquid level homophony valve single pulse control module and the present instruction of oxygen-eliminating device liquid level homophony valve three momentum control modules tracking oxygen-eliminating device liquid level homophony valve; Send system alarm simultaneously, otherwise get into the judgement that is described below;
If the difference of the first load instruction threshold value L1 and the instruction of current unit load is greater than the first load instruction threshold variation value Δ L1; System gets into the secondary valve single pulse regulative mode of transferring of oxygen-eliminating device liquid level; By the secondary valve single pulse control module control oxygen-eliminating device liquid level of transferring of oxygen-eliminating device liquid level; Otherwise the secondary valve single pulse control module of transferring of oxygen-eliminating device liquid level is followed the tracks of the present instruction of the secondary accent of oxygen-eliminating device liquid level valve, and system gets into the judgement that is described below;
If current unit load instruction is greater than the first load instruction threshold value L1 and work as the preload instruction less than the second load instruction threshold value L2; Perhaps current unit load instruction is arrived the flow signal fault greater than the first load instruction threshold value L1 and flow system flow detection; Perhaps the oxygen-eliminating device liquid level that provides of system is secondary transfers the valve instruction greater than 95% and oxygen-eliminating device liquid level when still being lower than oxygen-eliminating device liquid level setting value; System gets into oxygen-eliminating device liquid level homophony valve single pulse regulative mode; Regulate the oxygen-eliminating device liquid level by oxygen-eliminating device liquid level homophony valve single pulse control module; Otherwise oxygen-eliminating device liquid level homophony valve single pulse control module is followed the tracks of the present instruction of oxygen-eliminating device liquid level homophony valve, and system gets into the judgement that is described below;
If the difference of the instruction of current unit load and the second load instruction threshold value L2 is greater than the second load instruction threshold variation value Δ L2 and flow system flow detection during to the flow signal non-fault; System gets into oxygen-eliminating device liquid level homophony valve three momentum regulative modes; Regulate the oxygen-eliminating device liquid level by oxygen-eliminating device liquid level homophony valve three momentum control modules; Otherwise oxygen-eliminating device liquid level homophony valve three momentum control modules are followed the tracks of the present instruction of oxygen-eliminating device liquid level homophony valve, and system gets into the judgement that is described below;
If above-mentioned situation does not satisfy, system keeps current regulative mode to regulate until next control cycle, and system does once more and as above judges and regulate.
As shown in Figure 3; When system gets into the secondary accent of oxygen-eliminating device liquid level valve single pulse regulative mode; The secondary valve single pulse control module control oxygen-eliminating device liquid level pair of transferring of oxygen-eliminating device liquid level is transferred the valve instruction; The instruction of oxygen-eliminating device liquid level homophony valve is decreased to 0 by present instruction with pre-set velocity, produces the secondary valve of transferring of control output control oxygen-eliminating device by oxygen-eliminating device level gauging value and oxygen-eliminating device liquid level setting value through the PID1 control module.During the secondary accent of oxygen-eliminating device liquid level valve single pulse regulative mode; Oxygen-eliminating device homophony valve single pulse adjustment module and oxygen-eliminating device homophony valve three momentum adjustment modules do not participate in regulating, and oxygen-eliminating device homophony valve single pulse adjustment module and oxygen-eliminating device homophony valve three momentum adjustment modules are all followed the tracks of current oxygen-eliminating device homophony valve instruction.
As shown in Figure 4; When system gets into oxygen-eliminating device liquid level homophony valve single pulse regulative mode; The instruction of oxygen-eliminating device liquid level homophony valve single pulse control module control oxygen-eliminating device liquid level homophony valve; The oxygen-eliminating device liquid level is secondary transfers the valve instruction to be decreased to 0 by present instruction with pre-set velocity, produces control output control oxygen-eliminating device homophony valve by oxygen-eliminating device level gauging value and oxygen-eliminating device liquid level setting value through the PID2 control module.During oxygen-eliminating device liquid level homophony valve single pulse regulative mode; Secondary valve single pulse adjustment module and the oxygen-eliminating device homophony valve three momentum adjustment modules of transferring of oxygen-eliminating device do not participate in regulating; The secondary valve single pulse adjustment module of transferring of oxygen-eliminating device is followed the tracks of the instruction of the secondary accent of current oxygen-eliminating device valve, and oxygen-eliminating device homophony valve three momentum adjustment modules are followed the tracks of current oxygen-eliminating device homophony valve instruction.
As shown in Figure 5; When system gets into oxygen-eliminating device liquid level homophony valve three momentum regulative modes; The instruction of oxygen-eliminating device liquid level homophony valve three momentum control modules control oxygen-eliminating device liquid level homophony valve; The oxygen-eliminating device liquid level is secondary transfers the valve instruction to be decreased to 0 by present instruction with pre-set velocity; Produce middle output by oxygen-eliminating device level gauging value and oxygen-eliminating device liquid level setting value through the PID3 control module, middle output produces control output control oxygen-eliminating device homophony valve with oxygen-eliminating device inlet flow rate signal and oxygen-eliminating device outlet feedwater flow signal process PID4 control module again.During oxygen-eliminating device liquid level homophony valve three momentum regulative modes; Secondary valve single pulse adjustment module and the oxygen-eliminating device homophony valve single pulse adjustment module of transferring of oxygen-eliminating device do not participate in regulating; The secondary valve single pulse adjustment module of transferring of oxygen-eliminating device is followed the tracks of the instruction of the secondary accent of current oxygen-eliminating device valve, and oxygen-eliminating device homophony valve single pulse adjustment module is followed the tracks of current oxygen-eliminating device homophony valve instruction.
Based on the automatic control set for adjusting of above-mentioned thermal power generation unit oxygen-eliminating device liquid level; When underload, use the secondary valve regulation oxygen-eliminating device liquid level of transferring of oxygen-eliminating device in principle, oxygen-eliminating device homophony valve is transferred complete shut-down, when high load capacity, uses oxygen-eliminating device homophony valve regulation oxygen-eliminating device liquid level; The secondary valve of transferring of oxygen-eliminating device is transferred complete shut-down; Avoid the long-time running under little valve position of oxygen-eliminating device homophony valve and oxygen-eliminating device secondary accent valve, reduced the wearing and tearing and the restriction loss of valve, improved unit efficiency.When a lot of, the oxygen-eliminating device inlet and the rate of discharge error of measurement are bigger, so adopt the secondary accent of oxygen-eliminating device valve single pulse regulative mode less than its flow instrument benchmark range for oxygen-eliminating device inlet and rate of discharge signal when underload.When underload, only when secondary valve instructs maximum and liquid level still to be lower than setting value, adopt oxygen-eliminating device homophony valve single pulse regulative mode to regulate.Under high load capacity; Adopt oxygen-eliminating device homophony valve three momentums to regulate; As feed-forward signal, change oxygen-eliminating device inlet and rate of discharge signal when load variations causes oxygen-eliminating device outlet feedwater flow, and then influence before the deaerator level variation; Regulating system is just regulated, thereby has improved the stability and the rapidity of control system.Under high load capacity, only when flow detection is unusual, adopt oxygen-eliminating device homophony valve single pulse to regulate, unusual flow signal does not participate in regulating control, guarantees the reliability that liquid level is regulated.The switching of above regulative mode is unperturbed switches, and helps the stability of system.
Claims (4)
1. automatic control set for adjusting of thermal power generation unit oxygen-eliminating device liquid level is characterized in that: comprise that mutual communication connects like lower module:
System monitoring module: be used for load instruction, oxygen-eliminating device liquid level and the oxygen-eliminating device entrance and exit flow signal of unit are monitored in real time;
Oxygen-eliminating device liquid level setting module: be used to produce oxygen-eliminating device liquid level setting value, can perhaps manually import and produce oxygen-eliminating device liquid level setting value according to producing oxygen-eliminating device liquid level setting value automatically when the preload instruction by the operations staff;
Oxygen-eliminating device liquid level regulative mode judging unit: be used for quality and monitor value according to monitor signal; Confirm that the oxygen-eliminating device liquid level regulates control automatically by the different adjustment control module; And, can between the different adjustment control module, automatically switch according to the quality of monitor signal and the variation of monitor value;
Automatically regulate control module: be used to follow the tracks of present instruction of oxygen-eliminating device liquid level and control oxygen-eliminating device liquid level.
2. automatic control set for adjusting according to claim 1 is characterized in that: said system monitoring module comprises oxygen-eliminating device level monitoring module, unit load command monitoring module and oxygen-eliminating device inlet flow rate and oxygen-eliminating device outlet feedwater flow monitoring modular.
3. automatic control set for adjusting according to claim 1 is characterized in that: said automatic adjusting control module comprises like lower module:
The secondary valve single pulse control module of transferring of oxygen-eliminating device liquid level: be used to follow the tracks of secondary valve present instruction and the control oxygen-eliminating device liquid level of transferring of oxygen-eliminating device liquid level;
Oxygen-eliminating device liquid level homophony valve single pulse control module: be used to follow the tracks of valve present instruction of oxygen-eliminating device liquid level homophony and control oxygen-eliminating device liquid level;
Oxygen-eliminating device liquid level homophony valve three momentum control modules: be used to follow the tracks of valve present instruction of oxygen-eliminating device liquid level homophony and control oxygen-eliminating device liquid level.
4. automatic control set for adjusting according to claim 3; It is characterized in that: the pair accent valve in the secondary accent of homophony valve in said oxygen-eliminating device liquid level homophony valve single pulse control module or the oxygen-eliminating device liquid level homophony valve three momentum control modules and the oxygen-eliminating device liquid level valve single pulse control module only has a valve to participate in regulating: when system controls at the secondary accent of oxygen-eliminating device liquid level valve single pulse, and oxygen-eliminating device liquid level homophony valve complete shut-down; System is when oxygen-eliminating device liquid level homophony valve single pulse or the control of oxygen-eliminating device liquid level homophony valve three momentums, and oxygen-eliminating device liquid level pair is transferred the valve complete shut-down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204396902U CN202383529U (en) | 2011-11-09 | 2011-11-09 | Deoxygenator liquid level automatic adjusting and controlling apparatus for thermal power generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204396902U CN202383529U (en) | 2011-11-09 | 2011-11-09 | Deoxygenator liquid level automatic adjusting and controlling apparatus for thermal power generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202383529U true CN202383529U (en) | 2012-08-15 |
Family
ID=46632021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204396902U Expired - Fee Related CN202383529U (en) | 2011-11-09 | 2011-11-09 | Deoxygenator liquid level automatic adjusting and controlling apparatus for thermal power generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202383529U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508501A (en) * | 2011-11-09 | 2012-06-20 | 西安热工研究院有限公司 | Automatic regulation control system and method for deaerator liquid level of thermal generator set |
| CN112648029A (en) * | 2020-12-14 | 2021-04-13 | 华能国际电力股份有限公司上安电厂 | Coordinated control optimization method for deep peak regulation working condition of thermal power plant |
-
2011
- 2011-11-09 CN CN2011204396902U patent/CN202383529U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508501A (en) * | 2011-11-09 | 2012-06-20 | 西安热工研究院有限公司 | Automatic regulation control system and method for deaerator liquid level of thermal generator set |
| CN102508501B (en) * | 2011-11-09 | 2013-09-11 | 西安热工研究院有限公司 | Automatic regulation control system and method for deaerator liquid level of thermal generator set |
| CN112648029A (en) * | 2020-12-14 | 2021-04-13 | 华能国际电力股份有限公司上安电厂 | Coordinated control optimization method for deep peak regulation working condition of thermal power plant |
| CN112648029B (en) * | 2020-12-14 | 2022-08-05 | 华能国际电力股份有限公司上安电厂 | Coordinated control optimization method for deep peak regulation working condition of thermal power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102508501B (en) | Automatic regulation control system and method for deaerator liquid level of thermal generator set | |
| CN101118054B (en) | Steam temperature control in a boiler using a pid controller. | |
| CN108664006A (en) | It is a kind of that ammonia optimization method and system are intelligently sprayed based on the SCR denitration of zonal control and Dynamic matrix control | |
| CN103791485B (en) | Optimal control method of water supply system of thermal power generating unit | |
| CN108628177A (en) | A kind of SCR denitration intelligence spray ammonia optimization method and system based on model adaptation PID | |
| CN103867456B (en) | The control system and method for nuclear power station electrically driven feed pump rotational speed regulation | |
| CN108837698A (en) | Based on advanced measuring instrumentss and the SCR denitration of advanced control algorithm spray ammonia optimization method and system | |
| CN111878182B (en) | 660MW supercritical unit bypass control system and control method thereof | |
| CN108837699A (en) | It is a kind of that ammonia optimization method and system are intelligently sprayed based on the SCR denitration of hard measurement and PREDICTIVE CONTROL | |
| CN105372991A (en) | Heat supply unit multi-coal mixed combustion condition main steam pressure fluctuation-overcoming control method | |
| CN108803309A (en) | It is a kind of that ammonia optimization method and system are intelligently sprayed based on the SCR denitration of hard measurement and model adaptation | |
| CN108011378B (en) | Receiving end layered access extra-high voltage direct current low-load reactive power control method and control device | |
| CN107368049A (en) | The control method of coal-supplying amount under unit varying duty based on Power Plant DCS System | |
| CN105627287A (en) | Water feeding pump RB control system and method of supercritical CFB boiler generator set | |
| CN102953775A (en) | Automatic power generation control system based on gas-steam combined heat and power supply unit | |
| CN101436077A (en) | Method for bidirectional correcting middle point temperature and excessive heating steam temperature and special device thereof | |
| CN202542958U (en) | Fully-automatic boiler water supplying and oxygen feeding device | |
| CN202383529U (en) | Deoxygenator liquid level automatic adjusting and controlling apparatus for thermal power generator set | |
| CN111045321B (en) | Method for coordinately controlling embedded internal model controller under deep peak regulation | |
| CN201327015Y (en) | Undisturbed switching controller for high-pressure heater of supercritical unit | |
| CN109915216A (en) | A kind of thermal power plant unit control steam extraction frequency modulation system and adjusting method in short-term | |
| CN113405088A (en) | Three-impulse frequency conversion automatic adjusting method | |
| CN103590859B (en) | Without steam turbine power regulating method and the equipment of PID | |
| CN106247815B (en) | A kind of control method of the in line big machine air cooling system of the small machine of supercritical thermal power unit | |
| CN103807847A (en) | Large-capacity boiler whole-course water feeing control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20121109 |