CN104090589A - Deoxygenator water level whole-course control system and method with tracking under condensate pump frequency conversion condition - Google Patents
Deoxygenator water level whole-course control system and method with tracking under condensate pump frequency conversion condition Download PDFInfo
- Publication number
- CN104090589A CN104090589A CN201410261507.2A CN201410261507A CN104090589A CN 104090589 A CN104090589 A CN 104090589A CN 201410261507 A CN201410261507 A CN 201410261507A CN 104090589 A CN104090589 A CN 104090589A
- Authority
- CN
- China
- Prior art keywords
- control system
- frequency conversion
- module
- pump frequency
- instruction
- 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.)
- Granted
Links
Landscapes
- Control Of Non-Electrical Variables (AREA)
- Flow Control (AREA)
Abstract
The invention discloses a deoxygenator water level whole-course control system and method with tracking under a condensate pump frequency conversion condition. The system comprises a first control unit of a deoxygenator valve adjusting control system which is used for obtaining a deoxygenator water level set value and a process variable deoxygenator water level, and a second control unit of a condensate pump frequency conversion control system. The first control unit and the second control unit, according to a value of a load, determine whether the system is at an adjusting state or a tracking state, the first control unit then controls a first manual operator corresponding to the deoxygenator valve adjusting control system to adjust a deoxygenator water level through a valve adjusting instruction, and the second control unit controls the corresponding condensate pump frequency conversion control system through a frequency conversion instruction and then adjusts the deoxygenator water level through a second manual operator. By using the scheme, it is ensured that a valve adjusting mode and a frequency conversion mode are simultaneously automatically input, and interference-free switching is realized when the two modes are converted, such that the automation level is improved, and the energy conservation effect is also enhanced.
Description
Technical field
The present invention relates to be with the omnidistance control system of deaerator level and method under the solidifying pump frequency conversion condition of following the tracks of.
Background technology
In thermal power generation unit, deaerator level control system is carried out water level control by the throttling action of valve, and under running on the lower load, valve opening is less, produces larger restriction loss; Energy-saving and cost-reducing work is the emphasis of national economy long term growth, many electricity power enterprises have carried out energy-saving frequency conversion transformation to the great subsidiary engine of unit, large-scale subsidiary engine Frequency Conversion Modification is one of energy-saving and cost-reducing main path of genset, wherein condensate pump 6kV motor is thermal power plant's power consumption large equipment, after solidifying pump frequency conversion transformation, by changing the rotating speed of solidifying pump, regulate.
Under frequency conversion condition, the control mode of deaerator level has throttling (tune valve) and revolution speed to regulate (frequency conversion) two kinds of modes, in order to facilitate operations staff's operation, these two kinds of regulative modes drop into automatically simultaneously, for fear of interfering with each other of both adjustment processes, generally two automatic regulative mode interlockings, but during interlocking, can produce the not controller in adjustment state and produce integration saturated phenomenon, when this switches both, adjusting function declines, can not carry out in time water level control, even can produce the fluctuation of water level.
Summary of the invention
The deficiency existing for solving prior art, the invention discloses the omnidistance control system of deaerator level and the method under the solidifying pump frequency conversion condition of following the tracks of be with, this programme guarantees to accomplish that unperturbed switches when tune valve mode and conversion system drop into automatically simultaneously and two kinds of modes change, both improve automatization level, increased again energy-saving effect.Therefore, actively develop Condensate Pump Frequency Conversion Modification work, to reducing station service power consumption rate, net coal consumption rate, improve economy of power plant benefit significant.
For achieving the above object, concrete scheme of the present invention is as follows:
The omnidistance control system of deaerator level under the solidifying pump frequency conversion condition that band is followed the tracks of, comprising: for obtaining the oxygen-eliminating device of deaerator level setting value and process variable deaerator level, adjust the first control module of valve control system and the second control module of solidifying pump frequency conversion control system;
Described the first control module and the second control module are determined in adjustment state or tracking mode according to the value of load, the first control module adjusts the first manual operator of valve control system to regulate deaerator level by adjusting valve instruction to control corresponding oxygen-eliminating device then, the second control module is controlled corresponding solidifying pump frequency conversion control system by frequency conversion instruction and then by the second manual operator, is regulated deaerator level, final realization adjusts valve control system and frequency-changing control system by interlocking and following the tracks of, and the unperturbed of realizing whole control system switches with omnidistance water level to be controlled automatically.
The first pin of described the first control module is connected with the output terminal of logical and module, the second pin of the first control module is connected with low limit value module, the input end of described logical and module is connected with the first ceiling value module and the second ceiling value module, the second ceiling value module is connected with the second control module, and the first ceiling value module is connected with low limit value module.
The first pin of described the second control module is connected with low limit value module, the second pin of the second control module is followed the tracks of the output valve of the second manual operator, the second control module is also connected with general election module by setting value, and general election module selects larger input value to be sent to the second manual operator.
The numerical value of described the first ceiling value module is made as adjusts 90% of valve instruction.
Described the second ceiling value module numerical value is made as 50% of frequency conversion instruction.
Described low limit value functions of modules is output logic true signal while inputting lower than low limit value, and low limit value is made as 89.9%.
The omnidistance control method of deaerator level under the solidifying pump frequency conversion condition that band is followed the tracks of, comprises the following steps:
(1) during load up, oxygen-eliminating device adjusts valve control system and solidifying pump frequency conversion control system to obtain deaerator level setting value and process variable deaerator level, now, adjust valve instruction to be less than the first setting value, frequency conversion instruction is not less than the second setting value, oxygen-eliminating device adjusts valve control system in adjustment state, solidifying pump frequency conversion control system is in tracking mode, when adjusting valve instruction to reach the first setting value, solidifying pump frequency conversion control system is removed to follow the tracks of and is started to regulate, oxygen-eliminating device adjusts valve control system to enter tracking mode, completing oxygen-eliminating device adjusts valve control system to switch to the tracking unperturbed of solidifying pump frequency conversion control system,
(2) during load down, oxygen-eliminating device adjusts valve control system and solidifying pump frequency conversion control system to obtain deaerator level setting value and process variable deaerator level, now, adjust valve instruction to be locked in the first setting value, frequency conversion instruction is greater than the second setting value, oxygen-eliminating device adjusts valve control system in tracking mode, solidifying pump frequency conversion control system is in adjustment state, when frequency conversion instruction is during lower than the second setting value, oxygen-eliminating device is adjusted valve control system to remove and is followed the tracks of and starts to regulate, solidifying pump frequency conversion control system enters tracking mode, completing solidifying pump frequency conversion control system adjusts the tracking unperturbed of valve control system to switch to oxygen-eliminating device.
Detailed process during described step (1) load up is: when load reaches the rated load of the second setting value, frequency conversion instruction is adjusted into the second setting value, the second ceiling value module output logic true signal, low limit value module output logic is really sent into No. 1 pin of the second control module, make solidifying pump frequency conversion control system in tracking mode, the first ceiling value module output logic glitch, pass through logical and module output logic glitch with the logical truth signal of the second ceiling value module output, and deliver to No. 1 pin of the first control module, make the first control module in adjustment state,
Along with load raises, adjust valve instruction also along with increase, when adjusting valve to reach the first setting value instruction, the first ceiling value module output logic true signal, pass through logical and module output logic true signal with the logical truth signal of the second ceiling value module output, and deliver to No. 1 pin of the first control module, make the first control module in tracking mode, No. 2 pins by the first control module are followed the tracks of the first manual operator output valve, low limit value module output logic glitch is given No. 1 pin of the second control module simultaneously, remove the tracking mode of the second control module, make in adjustment state, rising along with load, deaerator level regulates by solidifying pump frequency conversion control system, so far completed from adjusting valve control system to switch to the tracking unperturbed of solidifying pump frequency conversion control system.
Detailed process during described step (2) load down is: by load up process, make to adjust the block of valve to fix on the instruction of the first setting value, during high load capacity, frequency conversion instruction is far above the second setting value, the first ceiling value module output logic true signal, pass through logical and module output logic true signal with the logical truth signal of the second ceiling value module output, and deliver to No. 1 pin of the first control module, make the first control module in tracking mode, low limit value module output logic glitch is given No. 1 pin of the second control module, make the second control module in adjustment state, deaerator level regulates by solidifying pump frequency conversion control system, reduction along with load, frequency conversion output order reduces gradually, until while arriving the second control module a little less than the instruction of the second setting value, the second ceiling value module output logic glitch, by logical and piece output logic glitch, deliver to the first control module, remove tracking mode, make in adjustment state,
Along with load reduction, adjust valve instruction to reduce since the first setting value, the second ceiling value module output logic glitch now, lower bound module is output as logical truth signal, make the second control module in tracking mode, by general election module, make frequency-changing control system remain the output of the second setting value instruction simultaneously, so far completed from solidifying pump frequency conversion control system to adjusting the tracking unperturbed of valve control system to switch.
90%, the second setting value that the first setting value is the instruction of tune valve is that 50%, the first control module and second control module of frequency conversion instruction is single pulse/tri-momentum control system.
Beneficial effect of the present invention:
This programme guarantees to accomplish that unperturbed switches when tune valve mode and conversion system drop into automatically simultaneously and two kinds of modes change, and has both improved automatization level, has increased again energy-saving effect.Therefore, actively develop Condensate Pump Frequency Conversion Modification work, to reducing station service power consumption rate, net coal consumption rate, improve economy of power plant benefit significant.
Accompanying drawing explanation
Fig. 1 system architecture diagram of the present invention;
Fig. 2 load up system flowchart of the present invention;
Fig. 3 load down system flowchart of the present invention;
Parametric line during Fig. 4 unit load up;
Parametric line during Fig. 5 unit load down.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in detail:
This system designs based on scattered control system, and its DCS version is: OVATION3.04, and analog acquisition fastener is: kilocalorie 1C31224G01, lesser calorie 1C31227G01; Analog output fastener is: kilocalorie 1C31129G03, lesser calorie 1C31132G01; Arithmetical unit model: DPU5X00247G01.
As shown in Figure 1, control system is divided into two parts, and an oxygen-eliminating device is adjusted valve control system, a solidifying pump frequency conversion control system, and water level settings value and process variable deaerator level are sent into the first control module and the second control module simultaneously.The first control module and the second control module are single pulse/tri-momentum control system, and single pulse/tri-momentum is controlled as conventional control method, and calculate by PI (proportional integral) inside.The first ceiling value module numerical value be made as adjust valve instruction 90% (the interval discharge characteristic of 90%-100% is very poor, in order to meet quick adjustment, is generally made as 90%.); The second ceiling value module numerical value be made as frequency conversion instruction 50% (when adjusting valve to reach 90% aperture, frequency converter need to reach the requirement that 50% instruction could meet condensate water main-piping pressure), the function of high limit module is while inputting higher than ceiling value, to be output as logical truth signal; The function of general election module is to select all the time larger input value, and in Fig. 1, effect is exactly the instruction that can guarantee frequency converter 50% in automatic situation dropping into; Low limit value functions of modules is output logic true signal while inputting lower than low limit value, and low limit value is made as 89.9%, and in order to switch, its value is a little less than the first high limit module.Whole control procedure, it is 0%-90% that oxygen-eliminating device is adjusted valve regulation scope, and variable frequency adjustment scope is 50%-100%, adjusts valve control system and frequency-changing control system by interlocking and follows the tracks of, and the unperturbed of realizing whole control system switches and whole-process automatic control.
As Figure 2-3, specific works process is as follows:
(1) load up process, during first on-load, be generally manual adjustments, when load reaches 50% rated load, frequency conversion instruction is adjusted into 50%, the second ceiling value module output logic true signal, now oxygen-eliminating device adjusts valve control system and solidifying pump frequency conversion control system all to drop into automatically, now because load is lower, now instruction is far below 90%, so lower bound module output logic is really sent into No. 1 pin of the second control module, make solidifying pump frequency conversion control system in tracking mode, No. 2 pins by the second control module are followed the tracks of the second manual operator output valve, the second control module is not affected by deaerator level setting value and process values deaerator level, thereby eliminated the saturated impact of integration.While the first ceiling value module output logic glitch, pass through logical and module output logic glitch with the logical truth signal of the second ceiling value module output, and deliver to No. 1 pin of the first control module, make the first control module in adjustment state, along with the rising of load, deaerator level is adjusted valve to control by oxygen-eliminating device and is regulated.
Along with load raises, adjust valve instruction also along with increase, when adjusting valve to reach 90% instruction, the first ceiling value module output logic true signal, pass through logical and module output logic true signal with the logical truth signal of the second ceiling value module output, and deliver to No. 1 pin of the first control module, make the first control module in tracking mode, No. 2 pins by the first control module are followed the tracks of the first manual operator output valve, the first control module is not affected by deaerator level setting value and process values deaerator level, thereby has eliminated integration saturated phenomenon.Low limit value module output logic glitch is given No. 1 pin of the second control module simultaneously, remove the tracking mode of the second control module, make in adjustment state, rising along with load, deaerator level regulates by solidifying pump frequency conversion control system, has so far completed from adjusting valve control system to switch to the tracking unperturbed of solidifying pump frequency conversion control system.
(2) load down process, by load up process, make to adjust the block of valve to fix on 90% instruction, during high load capacity, frequency conversion instruction is far above 50%, the first ceiling value module output logic true signal, pass through logical and module output logic true signal with the logical truth signal of the second ceiling value module output, and deliver to No. 1 pin of the first control module, make the first control module in tracking mode, the first control module is not affected by deaerator level setting value and process values deaerator level, thereby has eliminated integration saturated phenomenon; Low limit value module output logic glitch is given No. 1 pin of the second control module, make the second control module in adjustment state, deaerator level regulates by solidifying pump frequency conversion control system.Reduction along with load, frequency conversion output order reduces gradually, until while arriving the second control module a little less than 50% instruction, the second ceiling value module output logic glitch, by logical and piece output logic glitch, deliver to the first control module, remove tracking mode, make in adjustment state, along with load reduction, adjust valve instruction to reduce since 90%, the second ceiling value module output logic glitch now, lower bound module is output as logical truth signal, make the second control module in tracking mode, by general election module, make frequency-changing control system remain the output of 50% instruction simultaneously, the second control module is not affected by deaerator level setting value and process values deaerator level, thereby eliminated integration saturated phenomenon, so far completed from solidifying pump frequency conversion control system to adjusting the tracking unperturbed of valve control system to switch.
Case study on implementation: the scheme unit commitment of Mou factory is used, have a better effect, on-the-spot service condition is shown in shown in Fig. 4, Fig. 5, in figure, 1. valve instruction is adjusted in representative, and 2. valve feedback is adjusted in representative, the 3. solidifying frequency conversion instruction that rises pump of representative, 4. representative is coagulated and is risen revolution speed, 5. represent deaerator level setting value, 6. represent oxygen-eliminating device actual water level, 7. represent generator power.
In Fig. 4, by 7. generator power, can find out that this is a load uphill process, when adjusting valve instruction 1. to reach 90%, 3. frequency conversion instruction can drop at once, adjust valve instruction to be 1. locked in 90%, handoff procedure does not have disturbance, 5. deaerator level setting value and 6. not fluctuation of oxygen-eliminating device actual water level, water level controls steadily all the time, completed well the tracking unperturbed switching of tune valve control system in load uphill process and solidifying pump frequency conversion control system.
In Fig. 5, by 7. generator power, can find out that this is a load decline process, when frequency conversion instruction is 3. a little less than 50% time, adjust valve instruction 1. can drop at once, 3. frequency conversion instruction is locked in 50%, and handoff procedure does not have disturbance, 5. deaerator level setting value and 6. not fluctuation of oxygen-eliminating device actual water level, water level is controlled steadily all the time, has completed well in load decline process from solidifying pump frequency conversion control system to adjusting the tracking unperturbed of valve control system to switch.
Claims (9)
1. the omnidistance control system of deaerator level under the solidifying pump frequency conversion condition that band is followed the tracks of, it is characterized in that, comprising: for obtaining the oxygen-eliminating device of deaerator level setting value and process variable deaerator level, adjust the first control module of valve control system and the second control module of solidifying pump frequency conversion control system;
Described the first control module and the second control module are determined in adjustment state or tracking mode according to the value of load, the first control module adjusts the first manual operator of valve control system to regulate deaerator level by adjusting valve instruction to control corresponding oxygen-eliminating device then, the second control module is controlled corresponding solidifying pump frequency conversion control system by frequency conversion instruction and then by the second manual operator, is regulated deaerator level, final realization adjusts valve control system and frequency-changing control system by interlocking and following the tracks of, and the unperturbed of realizing whole control system switches with omnidistance water level to be controlled automatically.
2. the omnidistance control system of deaerator level under the solidifying pump frequency conversion condition that band as claimed in claim 1 is followed the tracks of, it is characterized in that, the first pin of described the first control module is connected with the output terminal of logical and module, the second pin of the first control module is connected with low limit value module, the input end of described logical and module is connected with the first ceiling value module and the second ceiling value module, the second ceiling value module is connected with the second control module, and the first ceiling value module is connected with low limit value module.
3. the omnidistance control system of deaerator level under the solidifying pump frequency conversion condition that band as claimed in claim 1 is followed the tracks of, it is characterized in that, the first pin of described the second control module is connected with low limit value module, the second pin of the second control module is followed the tracks of the output valve of the second manual operator, the second control module is also connected with general election module by setting value, and general election module selects larger input value to be sent to the second manual operator.
4. under the solidifying pump frequency conversion condition that band as claimed in claim 2 is followed the tracks of, the omnidistance control system of deaerator level, is characterized in that, the numerical value of described the first ceiling value module is made as adjusts 90% of valve instruction.
5. under the solidifying pump frequency conversion condition that band as claimed in claim 2 is followed the tracks of, the omnidistance control system of deaerator level, is characterized in that, described the second ceiling value module numerical value is made as 50% of frequency conversion instruction.
6. under the solidifying pump frequency conversion condition that band as claimed in claim 3 is followed the tracks of, the omnidistance control system of deaerator level, is characterized in that, described low limit value functions of modules is output logic true signal while inputting lower than low limit value, and low limit value is made as 89.9%.
7. under the solidifying pump frequency conversion condition that band as claimed in claim 1 is followed the tracks of, the method for the omnidistance control system of deaerator level, is characterized in that, comprises the following steps:
(1) during load up, oxygen-eliminating device adjusts valve control system and solidifying pump frequency conversion control system to obtain deaerator level setting value and process variable deaerator level, now, adjust valve instruction to be less than the first setting value, frequency conversion instruction is not less than the second setting value, oxygen-eliminating device adjusts valve control system in adjustment state, solidifying pump frequency conversion control system is in tracking mode, when adjusting valve instruction to reach the first setting value, solidifying pump frequency conversion control system is removed to follow the tracks of and is started to regulate, oxygen-eliminating device adjusts valve control system to enter tracking mode, completing oxygen-eliminating device adjusts valve control system to switch to the tracking unperturbed of solidifying pump frequency conversion control system,
(2) during load down, oxygen-eliminating device adjusts valve control system and solidifying pump frequency conversion control system to obtain deaerator level setting value and process variable deaerator level, now, adjust valve instruction to be locked in the first setting value, frequency conversion instruction is greater than the second setting value, oxygen-eliminating device adjusts valve control system in tracking mode, solidifying pump frequency conversion control system is in adjustment state, when frequency conversion instruction is during lower than the second setting value, oxygen-eliminating device is adjusted valve control system to remove and is followed the tracks of and starts to regulate, solidifying pump frequency conversion control system enters tracking mode, completing solidifying pump frequency conversion control system adjusts the tracking unperturbed of valve control system to switch to oxygen-eliminating device.
8. the method for the omnidistance control system of deaerator level under the solidifying pump frequency conversion condition that band as claimed in claim 7 is followed the tracks of, it is characterized in that, detailed process during described step (1) load up is: when load reaches the rated load of the second setting value, frequency conversion instruction is adjusted into the second setting value, the second ceiling value module output logic true signal, low limit value module output logic is really sent into No. 1 pin of the second control module, make solidifying pump frequency conversion control system in tracking mode, the first ceiling value module output logic glitch, pass through logical and module output logic glitch with the logical truth signal of the second ceiling value module output, and deliver to No. 1 pin of the first control module, make the first control module in adjustment state,
Along with load raises, adjust valve instruction also along with increase, when adjusting valve to reach the first setting value instruction, the first ceiling value module output logic true signal, pass through logical and module output logic true signal with the logical truth signal of the second ceiling value module output, and deliver to No. 1 pin of the first control module, make the first control module in tracking mode, No. 2 pins by the first control module are followed the tracks of the first manual operator output valve, low limit value module output logic glitch is given No. 1 pin of the second control module simultaneously, remove the tracking mode of the second control module, make in adjustment state, rising along with load, deaerator level regulates by solidifying pump frequency conversion control system, so far completed from adjusting valve control system to switch to the tracking unperturbed of solidifying pump frequency conversion control system.
9. the method for the omnidistance control system of deaerator level under the solidifying pump frequency conversion condition that band as claimed in claim 7 is followed the tracks of, it is characterized in that, detailed process during described step (2) load down is: by load up process, make to adjust the block of valve to fix on the instruction of the first setting value, during high load capacity, frequency conversion instruction is far above the second setting value, the first ceiling value module output logic true signal, pass through logical and module output logic true signal with the logical truth signal of the second ceiling value module output, and deliver to No. 1 pin of the first control module, make the first control module in tracking mode, low limit value module output logic glitch is given No. 1 pin of the second control module, make the second control module in adjustment state, deaerator level regulates by solidifying pump frequency conversion control system, reduction along with load, frequency conversion output order reduces gradually, until while arriving the second control module a little less than the instruction of the second setting value, the second ceiling value module output logic glitch, by logical and piece output logic glitch, deliver to the first control module, remove tracking mode, make in adjustment state,
Along with load reduction, adjust valve instruction to reduce since the first setting value, the second ceiling value module output logic glitch now, lower bound module is output as logical truth signal, make the second control module in tracking mode, by general election module, make frequency-changing control system remain the output of the second setting value instruction simultaneously, so far completed from solidifying pump frequency conversion control system to adjusting the tracking unperturbed of valve control system to switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410261507.2A CN104090589B (en) | 2014-06-12 | 2014-06-12 | Deaerator level whole-process control system and method under the conditions of solidifying pump frequency conversion with tracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410261507.2A CN104090589B (en) | 2014-06-12 | 2014-06-12 | Deaerator level whole-process control system and method under the conditions of solidifying pump frequency conversion with tracking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104090589A true CN104090589A (en) | 2014-10-08 |
| CN104090589B CN104090589B (en) | 2017-08-25 |
Family
ID=51638311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410261507.2A Active CN104090589B (en) | 2014-06-12 | 2014-06-12 | Deaerator level whole-process control system and method under the conditions of solidifying pump frequency conversion with tracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104090589B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113296549A (en) * | 2021-04-29 | 2021-08-24 | 江苏核电有限公司 | Deaerator liquid level control system and method based on time sequence control and inverse function operation |
| CN113495586A (en) * | 2021-04-29 | 2021-10-12 | 江苏核电有限公司 | Multi-mode deaerator liquid level control system and method with constant parameters of PI (proportional integral) regulator |
| CN114110557A (en) * | 2021-11-26 | 2022-03-01 | 河北大唐国际唐山北郊热电有限责任公司 | Automatic liquid level adjusting system and method for deaerator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010276203A (en) * | 2009-05-26 | 2010-12-09 | Hitachi Ltd | Control device of power plant condensate system |
| CN102278299A (en) * | 2011-05-31 | 2011-12-14 | 秦革 | Deep frequency conversion system of condensate pump of power station |
| CN102591201A (en) * | 2012-02-09 | 2012-07-18 | 山东电力研究院 | Control method of integral saturation resistance in auxiliary machine failure load reduction process |
| WO2013121270A1 (en) * | 2012-02-16 | 2013-08-22 | Ormat Technologies Inc. | Apparatus and method for increasing power plant efficiency at partial loads |
| CN203404771U (en) * | 2013-07-12 | 2014-01-22 | 华北电力科学研究院(西安)有限公司 | Frequency converter and adjusting valve control system of condensate water system |
| CN203573174U (en) * | 2013-11-04 | 2014-04-30 | 大唐华银电力股份有限公司金竹山火力发电分公司 | Deoxygenator water level automatic control system |
-
2014
- 2014-06-12 CN CN201410261507.2A patent/CN104090589B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010276203A (en) * | 2009-05-26 | 2010-12-09 | Hitachi Ltd | Control device of power plant condensate system |
| CN102278299A (en) * | 2011-05-31 | 2011-12-14 | 秦革 | Deep frequency conversion system of condensate pump of power station |
| CN102591201A (en) * | 2012-02-09 | 2012-07-18 | 山东电力研究院 | Control method of integral saturation resistance in auxiliary machine failure load reduction process |
| WO2013121270A1 (en) * | 2012-02-16 | 2013-08-22 | Ormat Technologies Inc. | Apparatus and method for increasing power plant efficiency at partial loads |
| CN203404771U (en) * | 2013-07-12 | 2014-01-22 | 华北电力科学研究院(西安)有限公司 | Frequency converter and adjusting valve control system of condensate water system |
| CN203573174U (en) * | 2013-11-04 | 2014-04-30 | 大唐华银电力股份有限公司金竹山火力发电分公司 | Deoxygenator water level automatic control system |
Non-Patent Citations (3)
| Title |
|---|
| 吴建兵: "330MW火力发电厂凝结水泵变频改造简介", 《科技创新导报》 * |
| 孙茜，庞晓华: "330MW机组凝泵DCS改造与节能分析", 《天津电力技术》 * |
| 龚咏梅: "300MW机组除氧器水位控制系统改进", 《华电技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113296549A (en) * | 2021-04-29 | 2021-08-24 | 江苏核电有限公司 | Deaerator liquid level control system and method based on time sequence control and inverse function operation |
| CN113495586A (en) * | 2021-04-29 | 2021-10-12 | 江苏核电有限公司 | Multi-mode deaerator liquid level control system and method with constant parameters of PI (proportional integral) regulator |
| CN113296549B (en) * | 2021-04-29 | 2022-07-26 | 江苏核电有限公司 | Deaerator liquid level control system and method based on time sequence control and inverse function operation |
| CN113495586B (en) * | 2021-04-29 | 2023-11-14 | 江苏核电有限公司 | Multi-mode deaerator liquid level control system and method with constant parameters of PI regulator |
| CN114110557A (en) * | 2021-11-26 | 2022-03-01 | 河北大唐国际唐山北郊热电有限责任公司 | Automatic liquid level adjusting system and method for deaerator |
| CN114110557B (en) * | 2021-11-26 | 2024-03-08 | 河北大唐国际唐山北郊热电有限责任公司 | Automatic liquid level adjusting system and method for deaerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104090589B (en) | 2017-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103378601B (en) | A kind of primary frequency modulation method based on bang-bang control and device | |
| US20140025217A1 (en) | Device and method for self-healing control of a multi-level power grid | |
| CN102193532B (en) | Automatic start-up and shut-down optimization control system of heat-engine plant unit plant | |
| CN201865154U (en) | Variable frequency and constant voltage intelligent water supply device of fuzzy self-adaption proportion-integration-differentiation (PID) control | |
| CN103345205B (en) | Data verification-based AGC load optimizing controlling method | |
| CN108111026B (en) | Implementation method of polycrystalline silicon power supply controller with self-starting function | |
| CN103244397A (en) | Optimal operation control method for variable-frequency circulating water pump | |
| CN104600718A (en) | Reactive power control method and device of direct-current transmission layering connecting system | |
| CN104090589A (en) | Deoxygenator water level whole-course control system and method with tracking under condensate pump frequency conversion condition | |
| CN108507245B (en) | Nested closed-loop full-automatic industrial circulating cooling control system and control method | |
| CN105119297A (en) | Method used for adaptive reactive power compensation of photovoltaic inverter | |
| CN105305505A (en) | Photovoltaic grid-connected inverter with voltage control function | |
| CN107528349B (en) | Thermal power generation unit gearshift adjustment control method and system based on new energy load | |
| CN105114141A (en) | Unit plant coordinative control method and system | |
| CN102324748B (en) | Statcom control system based on chaos self-adaptive control | |
| CN104167747A (en) | Unbalance and reactive compensation control device for low-voltage power grid | |
| CN106894854B (en) | Table coagulates formula indirect air cooling generating set cold end system running optimizatin method | |
| CN103166236B (en) | A kind of AVC joint debugging method based on stillness wattless occurrence apparatus | |
| CN113405088A (en) | Three-impulse frequency conversion automatic adjusting method | |
| CN107614996A (en) | Flickering control to electric arc furnaces | |
| CN104967127A (en) | Rapid voltage adjusting method of microgrid in off-network state | |
| CN107302229B (en) | AGC control device and comprehensive power generation system | |
| CN103051185B (en) | Low-power-consumption controllable regulated power supply circuit | |
| CN106961223A (en) | The current-sharing control method and device of a kind of switching rectifier | |
| CN105491852A (en) | Radiating method for active power filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |