CN113050728B - Temperature rising system and method for controlling self-starting of deaerator based on data model - Google Patents
Temperature rising system and method for controlling self-starting of deaerator based on data model Download PDFInfo
- Publication number
- CN113050728B CN113050728B CN202110323941.9A CN202110323941A CN113050728B CN 113050728 B CN113050728 B CN 113050728B CN 202110323941 A CN202110323941 A CN 202110323941A CN 113050728 B CN113050728 B CN 113050728B
- Authority
- CN
- China
- Prior art keywords
- module
- deaerator
- temperature
- control valve
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
- G05D23/32—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
Abstract
A temperature rising system and method based on data model control deaerator self-starting comprises a deaerator temperature rising expert curve module, the deaerator temperature rising expert function curve module is connected with a subtraction module, a deaerator temperature AI module is connected with the subtraction module, the subtraction module output is connected with a multiplication module, a coefficient k module is connected with the multiplication module, the multiplication module output is connected with an addition module, a deaerator steam heating control valve instruction expert function curve module is connected with the addition module, a time-based open loop control instruction module is connected with the addition module, the addition module output is connected with a switching module, a deaerator steam heating control valve feedback module is connected with a switching module, an automatic deaerator heating module is connected with the switching module, and the switching module output is connected with a deaerator steam heating control valve instruction output module. The invention greatly reduces the indexes of oil consumption, water consumption and coal consumption, reduces the time consumption for starting the unit, and achieves the aims of energy conservation, efficiency improvement and unattended operation.
Description
Technical Field
The invention relates to the technical field of thermal power generation, in particular to a temperature rising system and method for controlling the self-starting of a deaerator based on a data model.
Background
The heating process of the steam-water system of the deaerator of the thermal power plant is taken as an important link in a boiler feed water treatment process, and in the input process of starting the steam-water system of the deaerator in a unit, the whole heating process has the characteristics of hysteresis, time variation, nonlinearity, certain control difficulty risk and the like.
At present, most thermal power plants adopt operators to manually input a deaerator heating system, and due to different operation experiences of the operators, the operation time of the deaerator heating system is directly influenced, so that the starting time of a unit is prolonged; and a thermal power plant adopting an on-off-on-time technology (APS) is designed for a small part, a deaerator heating system is controlled to be switched in based on time open loop, the deaerator heating system is controlled to be switched in based on time open loop and is fixed, and the deaerator heating system is started by one key only and is not considered in the aspect of how to rapidly, safely and stably switch in the deaerator heating.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a temperature rising system and a method for controlling the self-starting of a deaerator based on a data model. The automatic starting of the deaerator steam-water system in the whole temperature rising process is realized, and the problems of water impact, low heating efficiency, long time consumption and the like in the unit starting and temperature rising process of the deaerator steam-water system are solved.
In order to achieve the purpose, the invention adopts the technical scheme that:
a temperature rising system for controlling the self-starting of a deaerator based on a data model comprises a deaerator temperature rising expert function curve F1(t) module 1, a deaerator temperature AI module 2, a deaerator steam heating control valve instruction expert function curve F2(t) module 3, a time-based open-loop control instruction module 4, a deaerator steam heating control valve feedback module 5, an automatic control deaerator heating module 6, a coefficient k module 7, a subtraction module 8, a multiplication module 9, an addition module 10, a switching module 11 and a deaerator steam heating control valve instruction output module 12;
the module 1 is connected with the subtracted end of the subtraction module 8, the deaerator temperature raising expert function curve F1(t) module 2 is connected with the subtracted end of the subtraction module 8, the output of the subtraction module 2 is connected with the multiplier end of the multiplication module 9, the coefficient k module 7 is connected with the multiplicand end of the multiplication module 9, the output of the multiplication module 9 is connected with the added end of the addition module 10, the deaerator steam heating control valve instruction expert function curve F2(t) module 3 is connected with the added end of the addition module 10, the instruction module 4 is connected with the added end of the addition module 10 based on time open loop control, the output of the addition module 10 is connected with the P1 end of the switching module 11, the deaerator steam heating control valve feedback module 5 is connected with the P2 end of the switching module 11, the automatic deaerator heating module 6 is connected with the S end of the switching module 11, and the output of the switching module 11 is connected with the deaerator steam heating control valve instruction output module 12.
And a coefficient k of the coefficient k module 7 is adjusted in real time according to the actual situation on site, and the direction reference steam parameter is adjusted, wherein the k value is adjusted to be small if the steam temperature and the steam pressure are high, and the k value is adjusted to be large if the steam temperature and the steam pressure are low.
And the output end of the deaerator steam heating control valve instruction output module 12 controls the deaerator steam heating control valve through a DCS (distributed control System) card.
A method for controlling a temperature rising system of a deaerator self-starting based on a data model comprises the following steps;
the method comprises the following steps:
fitting to obtain an expert function curve of a deaerator steam heating control valve instruction with an independent variable t and an expert function curve of deaerator temperature rise through analyzing heating data of a plurality of times of manually starting deaerators;
step two:
the method comprises the steps of starting timing by putting into automatic control of heating of a deaerator, subtracting a deaerator temperature at the time t from an output temperature value of a deaerator temperature rising expert function curve at the time t, multiplying a coefficient by the temperature to obtain a deaerator heating regulating valve corrected opening instruction, superposing the output value of the deaerator steam heating control valve instruction expert curve at the time t and obtaining a deaerator steam heating control valve instruction finally based on a time open-loop control instruction.
The first step is to obtain heating data of the deaerator after multiple times of manual starting, and obtain an instruction expert function curve of the deaerator steam heating control valve and a deaerator temperature rise expert function curve by applying simulation fitting software Matlab (R2019 b).
The second step is that the closed-loop correction quantity is obtained by subtracting the temperature of the deaerator at the time t from the output value of the temperature rise expert function curve of the deaerator at the time t, and then multiplying the closed-loop correction quantity by a coefficient k to obtain the final closed-loop correction quantity corrected according to the real-time temperature;
and adding the closed-loop correction according to the real-time temperature correction to the output value of the instruction expert function curve of the steam heating control valve of the deaerator at the time t and adding the closed-loop correction based on the time open-loop control instruction to obtain the final instruction of the steam heating control valve of the automatic control deaerator.
The invention has the beneficial effects that:
the method for controlling the self-starting temperature rise technology of the deaerator system based on the data model is characterized in that during specific operation, a deaerator steam-water system temperature rise manual start data is fitted for multiple times to obtain a deaerator steam heating control valve instruction expert function curve and a deaerator temperature rise expert function curve, and the deaerator steam heating control valve instruction expert function curve and the deaerator temperature rise expert function curve are fused into a control strategy according to the deaerator operation characteristics. In the actual dynamic investment process, the related data of the unit starting process of the same-time unit is compared, the unit starting time consumption is reduced, the oil consumption, the water consumption and the coal consumption indexes are greatly reduced, the unit starting time consumption is reduced, the purposes of energy conservation, efficiency improvement and unattended operation are achieved, and the risk that the equipment system is possibly operated safely due to reasons such as manual misoperation is fundamentally avoided.
The invention ensures that the desalted water of the deaerator achieves better deaerating effect through heating energy, avoids the oxygen in the water from entering a boiler system to cause thermal corrosion to equipment, and simultaneously achieves the requirement of the temperature of the water on the water cooling wall of the boiler.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The system comprises a deaerator temperature rise expert function curve F1(t) module 1, a deaerator temperature AI module 2, a deaerator steam heating control valve instruction expert function curve F2(t) module 3, a deaerator steam heating control valve instruction expert function curve F2(t) module 4, a time-based open-loop control instruction module 5, a deaerator steam heating control valve feedback module 5, an automatic deaerator heating control module 6, a coefficient k module 7, a subtraction module 8, a multiplication module 9, an addition module 10, a switching module 11 and a deaerator steam heating control valve instruction output module 12.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the method for controlling a self-starting temperature rise technology of a deaerator system based on a data model includes a deaerator temperature rise expert function curve F1(t) module 1, a deaerator temperature AI module 2, a deaerator steam heating control valve instruction expert function curve F2(t) module 3, a time-based open-loop control instruction module 4, a deaerator steam heating control valve feedback module 5, an input automatic control deaerator heating module 6, a coefficient k module 7, a subtraction module 8, a multiplication module 9, an addition module 10, a switching module 11, and a deaerator steam heating control valve instruction output module 12.
By adopting Matlab (R2019b) to summarize and analyze data of the temperature rise starting process of the manual deaerator for multiple times, specific point value ranges of the steam heating control valve opening (%) and the deaerator system temperature (DEG C) changing along with time are respectively obtained, data analysis and corresponding calculation are carried out on the point value ranges, and then curve fitting is carried out, so that an expert function curve equation of the steam heating control valve opening (%) and the deaerator system temperature (DEG C) is respectively obtained.
The module 1 is connected with the subtracted end of the subtraction module 8, the deaerator temperature raising expert function curve F1(t) module 2 is connected with the subtracted end of the subtraction module 8, the output of the subtraction module 2 is connected with the multiplier end of the multiplication module 9, the coefficient k module 7 is connected with the multiplicand end of the multiplication module 9, the output of the multiplication module 9 is connected with the added end of the addition module 10, the deaerator steam heating control valve instruction expert function curve F2(t) module 3 is connected with the added end of the addition module 10, the instruction module 4 is connected with the added end of the addition module 10 based on time open loop control, the output of the addition module 10 is connected with the P1 end of the switching module 11, the deaerator steam heating control valve feedback module 5 is connected with the P2 end of the switching module 11, the automatic deaerator heating module 6 is connected with the S end of the switching module 11, and the output of the switching module 11 is connected with the deaerator steam heating control valve instruction output module 12.
And a coefficient k of the coefficient k module 7 is adjusted in real time according to the actual situation on site, and the direction reference steam parameter is adjusted, wherein the k value is adjusted to be small if the steam temperature and the steam pressure are high, and the k value is adjusted to be large if the steam temperature and the steam pressure are low.
And the output end of the deaerator steam heating control valve instruction output module 12 controls the deaerator steam heating control valve through a DCS (distributed control System) card.
When the automatic control deaerator heating module 6 is put into use, the deaerator steam heating control valve instruction output module 12 switches the control algorithm to the method described herein. On the contrary, if the heating module 6 of the automatic control deaerator is not put into use, the valve position feedback of the deaerator temperature control valve is tracked by the preset value of the valve position instruction of the actual deaerator temperature control valve.
And a deaerator temperature regulation instruction output end controls a deaerator steam heating control valve through a DCS (distributed control system) clamping piece.
Claims (6)
1. A temperature rising system for controlling the self-starting of a deaerator based on a data model is characterized by comprising a deaerator temperature rising expert function curve F1(t) module (1), a deaerator temperature AI module (2), a deaerator steam heating control valve instruction expert function curve F2(t) module (3), a time-based open-loop control instruction module (4), a deaerator steam heating control valve feedback module (5), an automatic control deaerator heating module (6), a coefficient k module (7), a subtraction module (8), a multiplication module (9), an addition module (10), a switching module (11) and a deaerator steam heating control valve instruction output module (12);
the deaerator temperature rise expert function curve F1(t) module (1) is connected with a subtracted end of the subtraction module (8), the deaerator temperature AI module (2) is connected with a subtracted end of the subtraction module (8), an output of the subtraction module (8) is connected with a multiplier end of the multiplication module (9), a coefficient k module (7) is connected with a multiplicand end of the multiplication module (9), an output of the multiplication module (9) is connected with an addend of the addition module (10), a deaerator steam heating control valve instruction expert function curve F2(t) module (3) is connected with an addend of the addition module (10), the deaerator steam heating control valve instruction module (4) is connected with the addend of the addition module (10) based on time open loop control, an output of the addition module (10) is connected with a P1 end of the switching module (11), a deaerator steam heating control valve feedback module (5) is connected with a P2 end of the switching module (11), the input automatic control deaerator heating module (6) is connected with the S end of the switching module (11), and the output of the switching module (11) is connected with the deaerator steam heating control valve instruction output module (12).
2. The temperature rising system for controlling the self-starting of the deaerator based on the data model is characterized in that a coefficient k of the coefficient k module (7) is adjusted in real time according to actual conditions on site, direction reference steam parameters are adjusted, if the steam temperature and the steam pressure are high, a k value is reduced, and if the steam temperature and the steam pressure are low, the k value is increased.
3. The temperature rising system for controlling the self-starting of the deaerator based on the data model of claim 1, characterized in that the deaerator steam heating control valve instruction output module (12) output end controls the deaerator steam heating control valve through a DCS card.
4. The method for controlling the self-starting temperature rising system of the deaerator based on the data model is characterized by comprising the following steps of;
the method comprises the following steps:
fitting to obtain an expert function curve of a deaerator steam heating control valve instruction with an independent variable t and an expert function curve of deaerator temperature rise through analyzing heating data of a plurality of times of manually starting deaerators;
step two:
the method comprises the steps of starting timing by putting into automatic control of heating of a deaerator, subtracting a deaerator temperature at the time t from an output temperature value of a deaerator temperature rising expert function curve at the time t, multiplying a coefficient by the temperature to obtain a deaerator heating regulating valve corrected opening instruction, superposing the output value of the deaerator steam heating control valve instruction expert curve at the time t and obtaining a deaerator steam heating control valve instruction finally based on a time open-loop control instruction.
5. The method for controlling the self-starting temperature-rising system of the deaerator based on the data model of claim 4, wherein in the first step, heating data of the deaerator is obtained through multiple times of manual starting, and simulation fitting software is applied to obtain an instruction expert function curve of the steam heating control valve of the deaerator and an instruction expert function curve of temperature rising of the deaerator.
6. The method for controlling the self-starting temperature-rising system of the deaerator based on the data model of claim 4, wherein the second step is to apply the deaerator temperature-rising expert function curve to subtract the actual deaerator temperature to obtain a closed-loop correction quantity, and multiply the closed-loop correction quantity by a coefficient k to obtain a closed-loop correction quantity which is finally corrected according to the real-time temperature;
and adding a deaerator steam heating control valve instruction expert line and a time-based open-loop control instruction according to the closed-loop correction of the real-time temperature correction to obtain a final automatic control deaerator steam heating control valve instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110323941.9A CN113050728B (en) | 2021-03-26 | 2021-03-26 | Temperature rising system and method for controlling self-starting of deaerator based on data model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110323941.9A CN113050728B (en) | 2021-03-26 | 2021-03-26 | Temperature rising system and method for controlling self-starting of deaerator based on data model |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113050728A CN113050728A (en) | 2021-06-29 |
| CN113050728B true CN113050728B (en) | 2022-04-08 |
Family
ID=76515392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110323941.9A Active CN113050728B (en) | 2021-03-26 | 2021-03-26 | Temperature rising system and method for controlling self-starting of deaerator based on data model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113050728B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08159403A (en) * | 1994-12-01 | 1996-06-21 | Ishikawajima Harima Heavy Ind Co Ltd | Auxiliary vapor controller for boiler |
| CN101308074A (en) * | 2007-05-18 | 2008-11-19 | 中国石油化工股份有限公司 | High-temperature high pressure oil quality characteristic measuring apparatus and measurement method |
| CA2794735A1 (en) * | 2011-11-11 | 2013-05-11 | Simon Mandeville | Boiler energy recovery system |
| CN108594886A (en) * | 2018-04-21 | 2018-09-28 | 浙江盾安自控科技有限公司 | Based on the refrigeration system self-optimizing control method and apparatus for emulating and running big data |
| CN108693819A (en) * | 2017-04-05 | 2018-10-23 | 上海前孟计算机科技有限公司 | A kind of full-automatic boiler feed water oxygenation device |
| CN110173710A (en) * | 2019-05-07 | 2019-08-27 | 西安交通大学 | A kind of energy-saving climatic dynamics dynamic regulation device and method for eliminating plume |
| CN112217203A (en) * | 2020-09-28 | 2021-01-12 | 西安热工研究院有限公司 | Direct-drive wind power plant subsynchronous oscillation equivalence method capable of keeping model structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT306971B (en) * | 1968-11-13 | 1973-05-10 | Centra Buerkle Kg Albert | Four-way mixer |
| JPH07233904A (en) * | 1994-02-25 | 1995-09-05 | Mitsubishi Heavy Ind Ltd | Temperature rising controlling device at boiler start-up |
| CN103941763B (en) * | 2014-01-07 | 2016-04-13 | 广州粤能电力科技开发有限公司 | The intensification autocontrol method of boiler feed deaerator and system |
| CN105781646B (en) * | 2016-04-26 | 2018-01-02 | 华北电力科学研究院有限责任公司 | Combined cycle gas-steam turbine unit bypass pressure whole-process automatic control method and system |
| CN207473438U (en) * | 2017-11-21 | 2018-06-08 | 上海矢元电子有限公司 | A kind of PXIe systems that can be heated up certainly |
| CN207996791U (en) * | 2018-01-26 | 2018-10-23 | 深圳市达克罗工业有限公司 | A kind of furnace temperature self-checking device |
-
2021
- 2021-03-26 CN CN202110323941.9A patent/CN113050728B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08159403A (en) * | 1994-12-01 | 1996-06-21 | Ishikawajima Harima Heavy Ind Co Ltd | Auxiliary vapor controller for boiler |
| CN101308074A (en) * | 2007-05-18 | 2008-11-19 | 中国石油化工股份有限公司 | High-temperature high pressure oil quality characteristic measuring apparatus and measurement method |
| CA2794735A1 (en) * | 2011-11-11 | 2013-05-11 | Simon Mandeville | Boiler energy recovery system |
| CN108693819A (en) * | 2017-04-05 | 2018-10-23 | 上海前孟计算机科技有限公司 | A kind of full-automatic boiler feed water oxygenation device |
| CN108594886A (en) * | 2018-04-21 | 2018-09-28 | 浙江盾安自控科技有限公司 | Based on the refrigeration system self-optimizing control method and apparatus for emulating and running big data |
| CN110173710A (en) * | 2019-05-07 | 2019-08-27 | 西安交通大学 | A kind of energy-saving climatic dynamics dynamic regulation device and method for eliminating plume |
| CN112217203A (en) * | 2020-09-28 | 2021-01-12 | 西安热工研究院有限公司 | Direct-drive wind power plant subsynchronous oscillation equivalence method capable of keeping model structure |
Non-Patent Citations (4)
| Title |
|---|
| 基于MATLAB的热力除氧器模糊PID控制仿真研究;雷金莉;《新技术新工艺》;20091025(第10期);全文 * |
| 基于临机加热系统的锅炉变温冲洗方式;许朋江等;《热力发电》;20190201(第05期);全文 * |
| 某电厂除氧器振动事故分析;白洪宸等;《山东工业技术》;20150330(第06期);全文 * |
| 注汽锅炉真空除氧器给水加热系统;贾波等;《自动化与仪器仪表》;20170325(第03期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113050728A (en) | 2021-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107479389B (en) | Fuzzy self-adaptive PID control method for thermal power generating unit superheated steam temperature prediction | |
| CN111637444B (en) | Nuclear power steam generator water level control method based on Q learning | |
| CN104089270A (en) | Optimization and adjustment testing method for load control of generator set boiler | |
| CN101709869A (en) | Hybrid control method for superheat steam temperature system of coal-fired boiler | |
| CN103779862B (en) | Monoblock machine is with the primary frequency modulation regulating system under stove mode and method | |
| CN113050728B (en) | Temperature rising system and method for controlling self-starting of deaerator based on data model | |
| CN108646808B (en) | Temperature control system and temperature control method of dyeing machine | |
| CN101899996A (en) | Method for improving efficiency of steam turbine of thermal power unit by steam temperature predictive control | |
| CN110247410B (en) | Peak regulation processing method, device and system for heat supply unit | |
| US20120310375A1 (en) | A nonlinear intelligent pulse-controller | |
| KR20190057732A (en) | Apparatus and Method for Controlling Attemperator using Machine Learning method | |
| JP6608324B2 (en) | Power plant output control apparatus and method | |
| CN113237050B (en) | Automatic high-pressure heater pipe heating system and method based on data model | |
| CN106773675A (en) | Fired power generating unit Predictive function control method for simplifying and its application | |
| CN111614128B (en) | AGC coordinated control optimization method for heat supply unit under new energy grid-connected background | |
| CN105781646B (en) | Combined cycle gas-steam turbine unit bypass pressure whole-process automatic control method and system | |
| CN105804810B (en) | A kind of thermal power generation unit runs regulation and control method | |
| CN114415496A (en) | Condensed water throttling system and method for thermal power generating unit | |
| Gough | Advanced control of steam superheat temperature on a utility boiler | |
| CN112960723B (en) | Control system for dynamically switching into deaerator heating system based on time | |
| CN113606569A (en) | Steam heating network energy storage auxiliary peak regulation control method, system, equipment and medium | |
| CN102081352A (en) | Main steam temperature estimation optimizing control method for thermal generator set | |
| CN110955141A (en) | Reheating steam temperature control method based on neural network inverse model | |
| Shu et al. | Load regulation of the heat supply unit assisted by the energy storage in thermal networks via a reference model-based controller | |
| CN111506002B (en) | Thermal power generating unit regulating valve regulating characteristic linearization processing method, system and medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |