CN101995012B - Thermal power unit cooperative load change control method - Google Patents
Thermal power unit cooperative load change control method Download PDFInfo
- Publication number
- CN101995012B CN101995012B CN2009100564855A CN200910056485A CN101995012B CN 101995012 B CN101995012 B CN 101995012B CN 2009100564855 A CN2009100564855 A CN 2009100564855A CN 200910056485 A CN200910056485 A CN 200910056485A CN 101995012 B CN101995012 B CN 101995012B
- Authority
- CN
- China
- Prior art keywords
- deviation
- load
- water level
- power unit
- thermal power
- 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
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a thermal power unit cooperative load change control method, including that: load deviation, thermal well water level deviation and deaerator water level deviation are acquired; steady state, loading or unloading process is carried out on the load deviation, thermal well water level deviation and deaerator water level deviation; according to different working conditions, the load deviation and the water level deviation are subject to weighting; the result is subject to half integral and high-low limit intelligent change; a condensate pump outlet door adjustment instruction is obtained; and control at the boiler side is reasonably combined, and performance requirement of thermal power unit load change is met. The thermal power unit cooperative load change control method provided by the invention is a new method utilizing unit energy storage, the control at the boiler side is reasonably combined, and the requirement of peak shaping can be met while greatly reducing steam engine door adjustment throttle loss, thus improving economy of unit operation.
Description
Technical field
The varying duty that the present invention relates to thermal power plant's ultra supercritical power generation unit is controlled, and is particularly related to a kind of control method of thermal power unit cooperative load change.
Background technology
For quick responsive electricity grid load, must utilize the accumulation of energy of unit.Be in operation, the change of load is the pitch by steam turbine, changes that air inflow realizes.Usually, steam turbine pitch quick acting load-responsive (at first utilizing the accumulation of energy of boiler) during the fired power generating unit varying duty, boiler combustion rate changes in time simultaneously, coordinate to control the coordination that refers to boiler combustion rate and steam turbine pitch, when meeting the unit load requirement, meet the stable of unit master vapour pressure, thereby guaranteed the balance of unit.This traditional coordination varying duty method, the steam turbine pitch must have certain restriction loss.
Summary of the invention
The present invention proposes a kind of control method of thermal power unit cooperative load change, can when significantly reducing the restriction loss of steam turbine pitch, still can meet the demand of peak load regulation network, thereby improves the economy of unit operation.
In order to achieve the above object, the present invention proposes a kind of control method of thermal power unit cooperative load change, comprising:
Obtain load deviation, water level of thermal well deviation and deaerator level deviation;
Process according to stable state, application of load process or load shedding, to described water level of thermal well deviation and deaerator level deviation, adopt two-way variation dead band intelligent processing module to be processed, to load deviation, adopt the deviation intelligent processing module to process, and finish in varying duty, load deviation is taken over seamlessly to 0;
According to different operating modes, treated load deviation and water level deviation are weighted to processing;
The above results is passed through to semi-integral technology and high lower bound intelligence change process;
The load instruction directly acts on condensate water throttling sub-loop, obtains solidifying pump discharge pitch instruction;
And, by the control reasonable combination with boiler side, meet the performance requirement of fired power generating unit varying duty.
Further, the instruction of described solidifying pump discharge pitch comprises the variable quantity of the low-pressure pumping steam of needs.
Further, the instruction of described solidifying pump discharge pitch, by revising the water level definite value of oxygen-eliminating device and condenser, changes condensing water flow.
Further, the method, according to the particular capacity of oxygen-eliminating device and condenser and the excursion of permission, is determined the scope of available accumulation of energy, utilizes the SEA LEVEL VARIATION of oxygen-eliminating device and condenser in safe range.
The control method of the thermal power unit cooperative load change that the present invention proposes, at first change condensing water flow (utilizing the accumulation of energy of unit condensate water/heat regenerative system) when varying duty, the feedwater of boiler side and the timely action of fuel simultaneously, supplement accumulation of energy in time, makes load reach new balance.This control method is a kind of new method of utilizing storage of the generator set, and with the control reasonable combination of boiler side, the throttling of steam turbine pitch can reduce greatly, even there is no throttling, makes unit operation more economical.
The accompanying drawing explanation
The condensate water that Figure 1 shows that preferred embodiment of the present invention is adjusted the principle schematic of loading.
The specific embodiment
In order more to understand technology contents of the present invention, especially exemplified by specific embodiment and coordinate appended graphic being described as follows.
The present invention proposes a kind of control method of thermal power unit cooperative load change, can when significantly reducing the restriction loss of steam turbine pitch, still can meet the demand of peak load regulation network, thereby improves the economy of unit operation.
Please refer to Fig. 1, Figure 1 shows that the condensate water of preferred embodiment of the present invention is adjusted the principle schematic of loading.
The present invention proposes a kind of control method of thermal power unit cooperative load change, comprising:
Obtain load deviation, water level of thermal well deviation and deaerator level deviation;
Process according to stable state, application of load process or load shedding, to described water level of thermal well deviation and deaerator level deviation, adopt two-way variation dead band intelligent processing module to be processed, to load deviation, adopt the deviation intelligent processing module to process, and finish in varying duty, load deviation is taken over seamlessly to 0;
According to different operating modes, treated load deviation and water level deviation are weighted to processing;
The above results is passed through to semi-integral technology and high lower bound intelligence change process;
The load instruction directly acts on condensate water throttling sub-loop, obtains solidifying pump discharge pitch instruction;
And, by the control reasonable combination with boiler side, meet the performance requirement of fired power generating unit varying duty.
The preferred embodiment according to the present invention, the instruction of described solidifying pump discharge pitch comprises the variable quantity of the low-pressure pumping steam of needs.The water level definite value of described solidifying pump discharge pitch instruction correction oxygen-eliminating device and condenser, change condensing water flow.The method, according to the particular capacity of oxygen-eliminating device and condenser and the excursion of permission, is determined the scope of available accumulation of energy, utilizes the SEA LEVEL VARIATION of oxygen-eliminating device and condenser in safe range.
Groundwork principle of the present invention and being constructed as follows:
1) the load instruction directly acts on condensate water throttling sub-loop, and the variable quantity of workload demand is converted into to the variable quantity (the condensate water variable quantity needed) that the low pressure that needs is bled.Thereby revise the water level definite value of oxygen-eliminating device/condenser, change condensing water flow.
2) according to the particular capacity of oxygen-eliminating device/condenser and the excursion of permission, determine the scope of available accumulation of energy, utilize the SEA LEVEL VARIATION of oxygen-eliminating device/condenser in safe range.
3) control of boiler combustion rate and condensate water adjust burden functional to organically combine, coordination.
The control method of the thermal power unit cooperative load change that the present invention proposes, at first change condensing water flow (utilizing the accumulation of energy of unit condensate water/heat regenerative system) when varying duty, the feedwater of boiler side and the timely action of fuel simultaneously, supplement accumulation of energy in time, makes load reach new balance.This control method is a kind of new method of utilizing storage of the generator set, and with the control reasonable combination of boiler side, the throttling of steam turbine pitch can reduce greatly, even there is no throttling, makes unit operation more economical.
Although the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (4)
1. the control method of a thermal power unit cooperative load change, is characterized in that, comprising:
Obtain load deviation, water level of thermal well deviation and deaerator level deviation;
Process according to stable state, application of load process or load shedding, to described water level of thermal well deviation and deaerator level deviation, adopt two-way variation dead band intelligent processing module to be processed, to load deviation, adopt the deviation intelligent processing module to process, and finish in varying duty, load deviation is taken over seamlessly to 0;
According to different operating modes, treated load deviation and water level deviation are weighted to processing;
The above results is passed through to semi-integral technology and high lower bound intelligence change process;
The load instruction directly acts on condensate water throttling sub-loop, obtains solidifying pump discharge pitch instruction;
And, by the control reasonable combination with boiler side, meet the performance requirement of fired power generating unit varying duty.
2. the control method of thermal power unit cooperative load change according to claim 1, is characterized in that, the instruction of described solidifying pump discharge pitch comprises the variable quantity of the low-pressure pumping steam of needs.
3. the control method of thermal power unit cooperative load change according to claim 1, is characterized in that, the instruction of described solidifying pump discharge pitch, by revising the water level definite value of oxygen-eliminating device and condenser, changes condensing water flow.
4. the control method of thermal power unit cooperative load change according to claim 1, it is characterized in that, the method, according to the particular capacity of oxygen-eliminating device and condenser and the excursion of permission, is determined the scope of available accumulation of energy, utilizes the SEA LEVEL VARIATION of oxygen-eliminating device and condenser in safe range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100564855A CN101995012B (en) | 2009-08-14 | 2009-08-14 | Thermal power unit cooperative load change control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100564855A CN101995012B (en) | 2009-08-14 | 2009-08-14 | Thermal power unit cooperative load change control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101995012A CN101995012A (en) | 2011-03-30 |
| CN101995012B true CN101995012B (en) | 2013-12-04 |
Family
ID=43785514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100564855A Active CN101995012B (en) | 2009-08-14 | 2009-08-14 | Thermal power unit cooperative load change control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101995012B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620277A (en) * | 2012-04-19 | 2012-08-01 | 广东电网公司电力科学研究院 | Method and system for controlling load-shedding working condition of supercritical unit |
| CN103217946A (en) * | 2013-03-07 | 2013-07-24 | 上海外高桥第二发电有限责任公司 | Coordination variable load control method based on condensate pump frequency changer set |
| CN103216282B (en) * | 2013-04-24 | 2014-12-03 | 华北电力大学 | Thermal power generating unit loading control system and method based on continuously adjustable back pressure |
| CN105020693B (en) * | 2014-04-18 | 2017-08-25 | 上海明华电力技术工程有限公司 | Once-through Boiler intellectuality feedwater separator temperature control method based on UCPS |
| CN104635534B (en) * | 2014-12-22 | 2017-10-10 | 华北电力大学 | The fired power generating unit varying duty control method adjusted using cold end system cooling working medium |
| CN108061026A (en) * | 2016-11-07 | 2018-05-22 | 上海上电漕泾发电有限公司 | A kind of condensation water tune duty control method of adaptive solidifying pump operation mode |
| CN107143844A (en) * | 2017-05-27 | 2017-09-08 | 杭州意能电力技术有限公司 | A kind of fired power generating unit control method and system based on condensate throttling |
| CN107542507B (en) * | 2017-07-14 | 2019-06-11 | 同济大学 | Fired power generating unit load instruction quick response device based on low-quality heat recovery |
| CN108227500B (en) * | 2018-01-16 | 2020-11-03 | 云南电网有限责任公司电力科学研究院 | Thermal power generating unit rapid peak regulation coordination control method and system |
| CN112327624B (en) * | 2020-11-06 | 2021-12-28 | 西安交通大学 | Peak-shaving operation method for coal-fired unit |
| CN113756895B (en) * | 2021-08-16 | 2022-08-05 | 西安交通大学 | Control method for improving flexibility of coal-fired unit through condensate throttling |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2861754Y (en) * | 2005-08-05 | 2007-01-24 | 周炳琛 | High performance energy saving automatic gas vapor generator |
| CN101270872A (en) * | 2008-05-01 | 2008-09-24 | 刘德胜 | Combustion energy-saving automatic control device of coal-burning chain boiler |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5999008A (en) * | 1982-11-27 | 1984-06-07 | Hitachi Ltd | Control method of steam generating plant |
| JPH08200608A (en) * | 1995-01-24 | 1996-08-06 | Hitachi Ltd | Feed water flow rate controlling method for thermal power plant |
-
2009
- 2009-08-14 CN CN2009100564855A patent/CN101995012B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2861754Y (en) * | 2005-08-05 | 2007-01-24 | 周炳琛 | High performance energy saving automatic gas vapor generator |
| CN101270872A (en) * | 2008-05-01 | 2008-09-24 | 刘德胜 | Combustion energy-saving automatic control device of coal-burning chain boiler |
Non-Patent Citations (4)
| Title |
|---|
| 《1000MW超超临界机组控制系统校报技术的应用》;姚峻;《中国动力工程学会600/1000MW超超临界火电机组研讨会》;20090323;第60-66页 * |
| JP昭59-99008A 1984.06.07 |
| JP特开平8-200608A 1996.08.06 |
| 姚峻.《1000MW超超临界机组控制系统校报技术的应用》.《中国动力工程学会600/1000MW超超临界火电机组研讨会》.2009, |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101995012A (en) | 2011-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101995012B (en) | Thermal power unit cooperative load change control method | |
| CN210197259U (en) | Deep peak regulation device of thermal power plant | |
| CN106988807B (en) | Turbo-generator Set, duty control method and the primary frequency modulation method of extraction regulation | |
| CN104763485B (en) | A kind of concurrent heating type ultrahigh pressure/subcritical back pressure thermal power plant unit thermodynamic system | |
| CN203949150U (en) | A kind of for the main steam temperature intelligence control system of supercritical unit | |
| CN103217946A (en) | Coordination variable load control method based on condensate pump frequency changer set | |
| CN107559056B (en) | Steam turbine increasing system with AGC function and adjusting method | |
| CN106437875B (en) | Fired power generating unit working medium bypassing circulation peak regulation system | |
| CN112856363B (en) | System and method for improving heat supply steam parameters of deep peak shaving heat supply unit | |
| CN110397479A (en) | A kind of multivariable collaboration frequency modulation peak regulation system and method | |
| CN108009733B (en) | Method and system for deep peak shaving of thermodynamic system and terminal equipment | |
| CN111206970B (en) | Peak regulating system utilizing steam jet and steam extractor in thermal power plant and control method | |
| CN207795325U (en) | A kind of increasing steam turbine system with AGC functions | |
| CN109505672A (en) | Two-shipper backheat electricity generation system and its increase power output method | |
| CN105201573B (en) | Back pressure turbine heat supply and energy storage system and heat supply and energy storage method thereof | |
| CN112065520A (en) | Cold and hot re-cooperative steam supply system and method | |
| CN103790657A (en) | Steam distributing method and device for waste heat generating system of charcoal ink factory | |
| CN113280390B (en) | Deep peak regulation heat supply grade improving system and method based on heat pump boosting reheating | |
| CN111706898B (en) | Method for improving heat supply capacity of unit after high-back-pressure heat supply transformation | |
| CN209671021U (en) | Two-shipper backheat electricity generation system | |
| CN114607997A (en) | Novel heat storage heat exchanger system | |
| CN210889043U (en) | Peak shaving reconstruction system based on external heat supply unit with two-stage series bypass | |
| CN210118174U (en) | Super capacitor auxiliary frequency modulation system based on unit self-energy storage | |
| CN113703406A (en) | Operation optimization method and system for coal-fired water and electricity cogeneration unit by adopting low-temperature multi-effect technology | |
| CN210317420U (en) | System for improving medium-pressure industrial steam supply capacity under low load of power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |