CN104406153A - Reheat steam temperature control method of four-corner tangential boiler under low-nitrogen combustion mode - Google Patents
Reheat steam temperature control method of four-corner tangential boiler under low-nitrogen combustion mode Download PDFInfo
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Abstract
The invention discloses a reheat steam temperature control method of a four-corner tangential boiler under a low-nitrogen combustion mode. The method comprises the following steps: the advanced heat support is provided for variable load of a set through dynamic advanced feedforward in a main control loop of the boiler; a ratio of upper-layer powder feeders to lower-layer powder feeders is reasonably controlled; and an air volume ratio of a main combustion area to a burnout area is reasonably controlled. The method effectively solves the technical problems of easy movement of the flame center position of a hearth, difficulty of stable control of reheat steam temperature and in particular, increment of desuperheater water of a reheater due to the overheat phenomenon of the boiler caused by high fluctuation of the reheat steam temperature under the working condition of variable load.
Description
Technical field
The present invention relates to Power Plant Thermal process control field, particularly a kind of Boiler Reheated-steam Temperature Control method.
Background technology
Current national environmental protection policy increasingly stringent, " fossil-fuel power plant atmospheric pollutant emission standard " GB13223-2011 proposes clear and definite limit value requirement to fired power generating unit NOx emission concentration, the correlation technique transformation that new reduction of discharging subsidy policy encourages power plant to carry out to reduce emission of NOx of boiler amount further.Boiler low-NO_x combustion technology is the effective means reducing NOx generation from source, significantly can reduce tail flue gas denitration operating cost simultaneously.In recent years, most domestic fired power generating unit had completed the transformation of boiler low NO all.
But, under low nitrogen burning mode, boiler combustion characteristic changes, especially Terms of Corner Tangential Combustion boiler, its stove combustion is divided into primary zone and burning-out zone two thermic load centers, the easily movement of furnace flame center, reheat steam temperature is difficult to stability contorting, especially under varying load condition, reheat steam temperature fluctuation is large, easily occur boiler overheat phenomenon, reheater desuperheating water consumption increases, and has a strong impact on boiler operatiopn security and economy.
Summary of the invention
The object of this invention is to provide a kind of Process In A Tangential Firing Switching Logic Control of Reheat Steam Temperature method under low nitrogen burning mode, for solving the problems of the technologies described above.
A kind of Process In A Tangential Firing Switching Logic Control of Reheat Steam Temperature method under low nitrogen burning mode, comprises the steps:
By dynamically advanced feedforward in boiler master loop, for unit varying duty provides advanced heat support;
Conservative control upper strata machine supplying powder and lower floor's machine supplying powder proportioning;
Conservative control primary zone and burning-out zone air flow rate proportioning.
In described boiler master loop, the concrete grammar of dynamically advanced feedforward is:
At the unit varying duty initial stage, by reheat steam temperature correcting feedforward load regulation boiler coal feeding amount;
Maintain main vapour pressure deviation in effective range;
Reduce the boiler master PID module amplitude of accommodation;
The boiler master instruction regulated quantity keeping first adder to export and fuel quantity stable.
The concrete grammar of described conservative control upper strata machine supplying powder and lower floor's machine supplying powder proportioning is:
The powder-feeding amount of A layer coal burner, B layer coal burner, C layer coal burner and D layer coal burner is increased by coal master control PID module;
The extra powder-feeding amount of A layer coal burner, B layer coal burner is increased again by reheat steam temperature correcting feedforward.
The concrete grammar of described conservative control primary zone and burning-out zone air flow rate proportioning is:
The combustion air volume that lower floor's auxiliary air baffle plate changes primary zone lower-layer fuel is controlled by burner hearth differential pressure PID module;
The combustion air volume that upper strata auxiliary air baffle plate changes upper strata, primary zone fuel is controlled by burner hearth differential pressure PID module;
The circumference air quantity that lower-layer fuel windshield plate changes primary zone lower-layer fuel is controlled by lower-layer fuel windshield plate function;
The circumference air quantity that upper strata fuel air baffle plate changes upper strata, primary zone fuel is controlled by upper strata fuel air baffle plate function;
In addition, control by reheat steam temperature correcting feedforward the combustion air volume that lower floor's auxiliary air baffle plate changes primary zone lower-layer fuel;
In addition, control by reheat steam temperature correcting feedforward the circumference air quantity that lower-layer fuel windshield plate changes primary zone lower-layer fuel.
The method obtaining described reheat steam temperature correcting feedforward comprises the following steps:
Unit target load, after speed limiting device, utilizes subtracter speed limit output valve and delayed output valve to be subtracted each other, obtains reheat steam temperature correcting feedforward a reference value, and a reference value is inputted multiplier;
Multiplier exports the speed limit rate changing speed limiting device, determines correcting feedforward effect duration;
Load up reheat steam temperature correction function, load down reheat steam temperature correction function through first switch judge after by multiplier correction Changing load-acceleration;
Reheat steam temperature value and its lagged value are subtracted each other for detecting reheat steam temperature rate of change by subtracter, under load up operating mode, second switch is connected load up reheat steam temperature rate of change correction function and is accessed multiplier, under load down operating mode, the second switch is connected load down reheat steam temperature rate of change correction function and is accessed multiplier;
Reheat steam temperature deviation input load up reheat steam temperature drift correction function, load down reheat steam temperature drift correction function, under load up operating mode, the 3rd switch is connected load up reheat steam temperature drift correction function and accesses multiplier, and under load down operating mode, the 3rd switch is connected load down reheat steam temperature drift correction function and accesses multiplier;
The output of multiplier by multiplier correction feeding forward references value, and realizes feedforward action amplitude limit through clipping module.
Beneficial effect of the present invention is, efficiently solves that Process In A Tangential Firing reheat steam temperature fluctuation under low nitrogen burning mode is large, the easy overtemperature of boiler tube wall, technical barrier that reheater desuperheating water consumption is large, improves boiler operatiopn stability, security and economy.
Below in conjunction with accompanying drawing, Process In A Tangential Firing Switching Logic Control of Reheat Steam Temperature method under low nitrogen burning mode of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is Process In A Tangential Firing Switching Logic Control of Reheat Steam Temperature method schematic diagram under low nitrogen burning mode;
Fig. 2 is reheat steam temperature correcting feedforward schematic diagram.
Detailed description of the invention
Embodiment of the present invention boiler is that HG-1025/17.5-YM30 type is subcritical, corner tangential firing drum boiler, and pulverized coal preparation system is middle warehouse formula, arranges A layer coal burner, B layer coal burner, C layer coal burner, D layer coal burner from bottom to up.
Under varying load condition, by dynamically advanced feedforward in boiler master loop, for unit varying duty provides advanced heat support, maintain the energy equilibrium of supply and demand between boiler and steam turbine, avoid the varying duty later stage to cause reheat steam temperature coupling fluctuation because fuel quantity significantly regulates.On the other hand, by conservative control upper strata machine supplying powder and lower floor's machine supplying powder proportioning, primary zone and burning-out zone air flow rate proportioning, stablize boiler heat load and flame central position in varying duty process, maintain reheater rotating jet flow proportions constant, thus Boiler Reheated-steam Temperature stability contorting object under reaching varying load condition.
As shown in Figure 1, under low nitrogen burning mode, Process In A Tangential Firing Switching Logic Control of Reheat Steam Temperature method comprises the steps:
By dynamically advanced feedforward in boiler master loop, for unit varying duty provides advanced heat support; Conservative control upper strata machine supplying powder and lower floor's machine supplying powder proportioning; Conservative control primary zone and burning-out zone air flow rate proportioning.
In boiler master loop, the working mechanism of dynamically advanced feedforward is at the unit varying duty initial stage, by reheat steam temperature correcting feedforward 5 load regulation boiler coal feeding amount, accelerate boiler combustion response speed, maintain main vapour pressure deviation 1 in effective range, reduce boiler master PID module 6 amplitude of accommodation, guarantee boiler master instruction regulated quantity and the fuel quantity stable of first adder 9 output in varying duty process, avoid the reheat steam temperature fluctuation that the varying duty later stage causes due to the disturbance of boiler whole thermal load.
The working mechanism of conservative control upper strata machine supplying powder and lower floor's machine supplying powder proportioning is, in unit load up process, coal master control PID module 12 controls to send respectively to A layer coal burner, B layer coal burner, C layer coal burner, the A machine supplying powder instruction of D layer coal burner increase powder-feeding amount, the instruction of B machine supplying powder, the instruction of C machine supplying powder, the instruction of D machine supplying powder on the one hand, and reheat steam temperature correcting feedforward 5 sends the instruction of A machine supplying powder by the 4th adder 13, slender acanthopanax musical instruments used in a Buddhist or Taoist mass 14 on the other hand, the instruction of B machine supplying powder increases A layer coal burner further, the extra powder-feeding amount of B layer coal burner;
Because A layer coal burner, B layer coal burner increases powder-feeding amount by coal master control PID module 12 and reheat steam temperature correcting feedforward 5 co-controlling simultaneously, and C layer coal burner, D layer coal burner only controls to increase powder-feeding amount by coal master control PID module 12, the extra powder-feeding amount of supply is controlled without reheat steam temperature correcting feedforward 5, therefore the A layer coal burner of boiler lower floor is in, B layer coal burner is all the time than the C layer coal burner on upper strata, the powder-feeding amount of D layer coal burner is than great, in effective control load up process, the disturbance of boiler combustion thermic load and flame kernel move the reheat steam temperature rise phenomenon caused.In load shedding process, the mechanism of action is the same.
The working mechanism of conservative control primary zone and burning-out zone air flow rate proportioning is, in unit load up process,
Burner hearth differential pressure PID module 7 receives bellows and burner hearth differential pressure signal 3, analyzes after judging and sends the auxiliary air baffle plate instruction of corresponding lower floor, for controlling lower floor's auxiliary air baffle plate, changes the combustion air volume of primary zone lower-layer fuel;
Burner hearth differential pressure PID module 7 receives bellows and burner hearth differential pressure signal 3, analyzes after judging and sends the auxiliary air baffle plate instruction of corresponding upper strata, for controlling upper strata auxiliary air baffle plate, changes the combustion air volume of upper strata, primary zone fuel;
Lower-layer fuel windshield plate function 8 controls to meet lower floor and receives machine supplying powder instruction 4, sends the instruction of lower-layer fuel windshield plate after process, controls the circumference air quantity that lower-layer fuel windshield plate changes primary zone lower-layer fuel;
Upper strata fuel air baffle plate function 38 controls to receive upper strata machine supplying powder instruction 39, sends upper strata fuel air baffle plate instruction after process, controls the circumference air quantity that upper strata fuel air baffle plate changes upper strata, primary zone fuel;
In addition, reheat steam temperature correcting feedforward 5 sends lower floor's auxiliary air baffle plate instruction by second adder 10, controls the combustion air volume that lower floor's auxiliary air baffle plate changes primary zone lower-layer fuel;
In addition, reheat steam temperature correcting feedforward 5 sends the instruction of lower-layer fuel windshield plate by the 3rd adder 11, controls the circumference air quantity that lower-layer fuel windshield plate changes primary zone lower-layer fuel.
Lower floor's auxiliary air baffle plate instruction, the instruction of lower-layer fuel windshield plate increase air quantity respectively by burner hearth differential pressure PID module 7, lower-layer fuel windshield plate function 8, also increase extra air quantity by reheat steam temperature correcting feedforward 5 in addition; And upper strata auxiliary air baffle plate instruction, upper strata fuel air baffle plate instruction only accept burner hearth differential pressure PID module 7, upper strata fuel air baffle plate function 38 regulates, without the extra feedforward air quantity that reheat steam temperature correcting feedforward 5 increases.Therefore due to combustion air volume, the circumference air quantity abundance of primary zone lower-layer fuel, combustion share and shared furnace load are than great, and upper strata, primary zone fuel combustion supporting air quantity is relative with burning-out zone air quantity few, its combustion share reduces gradually, and the effect that this combustion share from bottom to top successively decreases gradually effectively controls in load up process and the disturbance of boiler combustion thermic load and flame kernel move the reheat steam temperature rise phenomenon caused.In the load shedding course of work, the mechanism of action is the same.
Reheat steam temperature correcting feedforward 5 is the revised dynamic Feedforward of reheat steam temperature, for boiler master PID module, the instruction of A machine supplying powder, the instruction of B machine supplying powder, lower floor's auxiliary air baffle plate instruction, the instruction of lower-layer fuel windshield plate provide advanced feed-forward regulation.
Be illustrated in figure 2 reheat steam temperature correcting feedforward schematic diagram, the method specifically obtaining reheat steam temperature correcting feedforward 5 is as follows:
Unit target load 15 is after speed limiting device 19, the first subtracter 26 is utilized the output of the output valve of speed limiting device 19 and the first delayed device 24 to be subtracted each other, obtain reheat steam temperature correcting feedforward a reference value, the speed limit rate of the change speed limiting device 19 that the first multiplier 20 exports, determine correcting feedforward effect duration, and the output of the second multiplier 35 revises feeding forward references value by the 3rd multiplier 36, determine correcting feedforward effect amplitude.
Load up reheat steam temperature correction function 21, load down reheat steam temperature correction function 22 revises Changing load-acceleration 16 by multiplier 20 after the first switch 27 judges, wherein load up reheat steam temperature correction function 21 is reheat steam temperature correction function under load up operating mode, load down reheat steam temperature correction function 22 is that under load down operating mode, reheat steam temperature correction function (namely rises, under load down determining device 25 judges that unit is in load up operating mode, control the first switch 27 and be switched to load up reheating temperature correction function 21, rise, under load down determining device 25 judges that unit is in load down operating mode, control the first switch 27 and be switched to load down reheat steam temperature correction function 22).Function setup principle is under load up operating mode, and load up reheat steam temperature correction function 21 and reheat steam temperature are positive function relation; Under load down operating mode, load down reheat steam temperature correction function 22 and reheat steam temperature are inverse function relation.
Reheat steam temperature 17 and the second delayed device 23 output valve subtract each other for detecting reheat steam temperature rate of change by the second subtracter 28, load up reheat steam temperature rate of change correction function 31, load down reheat steam temperature rate of change correction function 32 is respectively liter, under load down operating mode, reheat steam temperature rate of change correction function (namely rises, under load down determining device 25 judges that unit is in load up operating mode, control the second switch 33 and be switched to load up reheat steam temperature rate of change correction function 31, rise, under load down determining device 25 judges that unit is in load down operating mode, control the second switch 33 and be switched to load down reheat steam temperature rate of change correction function 32), its setting principle is under load up operating mode, load up reheat steam temperature rate of change correction function 31 and reheat steam temperature rate of change positive function relation, under load down operating mode, load down reheat steam temperature rate of change correction function 32 and reheat steam temperature rate of change inverse function relation.
Load up reheat steam temperature drift correction function 29, load down reheat steam temperature drift correction function 30 is respectively liter, under load down operating mode, reheat steam temperature drift correction function (namely rises, under load down determining device 25 judges that unit is in load up operating mode, control the 3rd switch 34 and be switched to load up reheat steam temperature drift correction function 29, rise, under load down determining device 25 judges that unit is in load down operating mode, control the 3rd switch 34 and be switched to load down reheat steam temperature drift correction function 30), its setting principle is, under load up operating mode, reheat steam temperature deviation (actual reheat steam temperature value-setting value reheat steam temperature) is larger, load up reheat steam temperature drift correction function 29 is larger with reheat steam temperature deviation positive function relation, under load down operating mode, reheat steam temperature deviation is larger, and load down reheat steam temperature drift correction function 30 is larger with reheat steam temperature deviation inverse function relation.
Boiler master PID module 6 is near closed-loop adjustment unit main vapour pressure to setting value, and its output order changes total coal amount setting value; Coal master control PID module 12 enters near total coal amount to setting value of boiler for closed-loop adjustment, and its output order changes machine supplying powder rotating speed; Burner hearth differential pressure PID module 7 is near closed-loop adjustment bellows and burner hearth differential pressure to setting value, and its output order changes auxiliary air baffle plate instruction; Upper strata fuel air baffle plate function 38 is for arranging the benchmark proportion relation of upper strata machine supplying powder instruction and its fuel air; Lower-layer fuel windshield plate function 8 is for arranging the benchmark proportion relation of lower floor's machine supplying powder instruction and its fuel air.Load up reheat steam temperature correction function 21 is for according to reheat steam temperature correcting feedforward effect duration under reheat steam temperature measured value correction load up operating mode; Load down reheat steam temperature correction function 22 is for according to reheat steam temperature correcting feedforward effect duration under reheat steam temperature measured value correction load down operating mode; Load up reheat steam temperature drift correction function 29 is for according to reheat steam temperature correcting feedforward effect amplitude under Switching Logic Control of Reheat Steam Temperature drift correction load up operating mode; Load down reheat steam temperature drift correction function 30 is for according to reheat steam temperature correcting feedforward effect amplitude under Switching Logic Control of Reheat Steam Temperature drift correction load down operating mode; Ascending, descending load determining device 25 under judging unit and being in load up operating mode or under being in load down operating mode, and controls switch (the first switch 27, second switch 33, the 3rd switch 34) according to judged result; Clipping module 37 is for being limited in reheat steam temperature correcting feedforward effect amplitude within the scope of effective and safe.
In embodiment, reheat steam temperature correcting feedforward can all be generated by the standard control module configuration of distributed monitoring control system, and is applied to boiler master loop, A machine supplying powder command drcuit, B machine supplying powder command drcuit, lower floor's auxiliary air baffle plate command drcuit, fuel air baffle plate command drcuit with macroblock form; In different circuit reheat steam temperature correcting feedforward effect duration by arranging load up reheat steam temperature correction function 21, load down reheat steam temperature correction function 22 realizes, feedforward action amplitude by arranging load up reheat steam temperature drift correction function 29, load down reheat steam temperature drift correction function 30, load up reheat steam temperature rate of change correction function 31, load down reheat steam temperature rate of change correction function 32 realize, feedforward action amplitude limit realizes by arranging clipping module 37.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (5)
1. a Process In A Tangential Firing Switching Logic Control of Reheat Steam Temperature method under low nitrogen burning mode, is characterized in that, comprise the steps:
By dynamically advanced feedforward in boiler master loop, for unit varying duty provides advanced heat support;
Conservative control upper strata machine supplying powder and lower floor's machine supplying powder proportioning;
Conservative control primary zone and burning-out zone air flow rate proportioning.
2. Process In A Tangential Firing Switching Logic Control of Reheat Steam Temperature method under low nitrogen burning mode according to claim 1, is characterized in that, in described boiler master loop, the concrete grammar of dynamically advanced feedforward is:
At the unit varying duty initial stage, by reheat steam temperature correcting feedforward (5) load regulation boiler coal feeding amount;
Maintain main vapour pressure deviation (1) in effective range;
Reduce boiler master PID module (6) amplitude of accommodation;
The boiler master instruction regulated quantity keeping first adder (9) to export and fuel quantity stable.
3. Process In A Tangential Firing Switching Logic Control of Reheat Steam Temperature method under low nitrogen burning mode according to claim 2, is characterized in that, the concrete grammar of described conservative control upper strata machine supplying powder and lower floor's machine supplying powder proportioning is:
The powder-feeding amount of A layer coal burner, B layer coal burner, C layer coal burner and D layer coal burner is increased by coal master control PID module (12);
The extra powder-feeding amount of A layer coal burner, B layer coal burner is increased again by reheat steam temperature correcting feedforward (5).
4. Process In A Tangential Firing Switching Logic Control of Reheat Steam Temperature method under low nitrogen burning mode according to claim 3, is characterized in that, the concrete grammar of described conservative control primary zone and burning-out zone air flow rate proportioning is:
The combustion air volume that lower floor's auxiliary air baffle plate changes primary zone lower-layer fuel is controlled by burner hearth differential pressure PID module (7);
The combustion air volume that upper strata auxiliary air baffle plate changes upper strata, primary zone fuel is controlled by burner hearth differential pressure PID module (7);
The circumference air quantity that lower-layer fuel windshield plate changes primary zone lower-layer fuel is controlled by lower-layer fuel windshield plate function (8);
The circumference air quantity that upper strata fuel air baffle plate changes upper strata, primary zone fuel is controlled by upper strata fuel air baffle plate function (38);
In addition, control by reheat steam temperature correcting feedforward (5) combustion air volume that lower floor's auxiliary air baffle plate changes primary zone lower-layer fuel;
In addition, control by reheat steam temperature correcting feedforward (5) the circumference air quantity that lower-layer fuel windshield plate changes primary zone lower-layer fuel.
5. Process In A Tangential Firing Switching Logic Control of Reheat Steam Temperature method under low nitrogen burning mode according to claim 2, is characterized in that, the method obtaining described reheat steam temperature correcting feedforward (5) comprises the following steps:
Unit target load (15) is after speed limiting device (19), subtracter (26) is utilized speed limit output valve and delayed output valve to be subtracted each other, obtain reheat steam temperature correcting feedforward a reference value, and a reference value is inputted multiplier (36);
Multiplier (20) exports the speed limit rate changing speed limiting device (19), determines correcting feedforward effect duration;
Load up reheat steam temperature correction function (21), load down reheat steam temperature correction function (22) revise Changing load-acceleration (16) by multiplier (20) after the first switch (27) judges;
Reheat steam temperature value and its lagged value are subtracted each other for detecting reheat steam temperature rate of change by subtracter (28), under load up operating mode, second switch (33) is connected load up reheat steam temperature rate of change correction function (31) and is accessed multiplier (35), under load down operating mode, the second switch (31) is connected load down reheat steam temperature rate of change correction function (32) and is accessed multiplier (35);
Reheat steam temperature deviation (18) input load up reheat steam temperature drift correction function (29), load down reheat steam temperature drift correction function (30), under load up operating mode, the 3rd switch (34) is connected load up reheat steam temperature drift correction function (29) and accesses multiplier (35), and under load down operating mode, the 3rd switch (34) is connected load down reheat steam temperature drift correction function (30) and accesses multiplier (35);
The output of multiplier (35) revises feeding forward references value by multiplier (36), and realizes feedforward action amplitude limit through clipping module (37).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801890A (en) * | 2017-03-13 | 2017-06-06 | 华能国际电力股份有限公司玉环电厂 | The method for reducing boiler main reheat steam temperature fluctuation during lifting load |
| CN107448926A (en) * | 2017-07-20 | 2017-12-08 | 中国神华能源股份有限公司 | Fired power generating unit reheat steam temperature control system and method |
| CN111006238A (en) * | 2019-11-14 | 2020-04-14 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Method for automatically adjusting up-down position of flame center of hearth of pulverized coal fired boiler with four tangential corners |
| CN112082137A (en) * | 2020-08-18 | 2020-12-15 | 国家能源集团山东石横热电有限公司 | Automatic steam temperature adjusting system of coal-fired boiler |
| CN115016576A (en) * | 2022-05-27 | 2022-09-06 | 国能河北沧东发电有限责任公司 | Reheat steam temperature control method and device, readable medium and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56124832A (en) * | 1980-03-07 | 1981-09-30 | Hitachi Ltd | Controlling method for steam temperature of coal fired once-through boiler |
| JPS62245021A (en) * | 1986-04-18 | 1987-10-26 | Matsushita Electric Ind Co Ltd | Combustion control device |
| JP2000297901A (en) * | 1999-04-12 | 2000-10-24 | Babcock Hitachi Kk | Reheat steam temperature control device for boiler |
| CN101338892A (en) * | 2008-06-25 | 2009-01-07 | 中国电力科学研究院 | Thermal power unit reheated steam temperature control method |
| CN101598328A (en) * | 2008-09-28 | 2009-12-09 | 广州粤能电力科技开发有限公司 | The Steam Temperature for Boiler control method and the isolated plant of big rate of load change |
| CN102012017A (en) * | 2010-11-19 | 2011-04-13 | 华北电力大学（保定） | Feedforward signal control method in boiler steam temperature automatic control system |
-
2014
- 2014-09-25 CN CN201410495506.4A patent/CN104406153B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56124832A (en) * | 1980-03-07 | 1981-09-30 | Hitachi Ltd | Controlling method for steam temperature of coal fired once-through boiler |
| JPS62245021A (en) * | 1986-04-18 | 1987-10-26 | Matsushita Electric Ind Co Ltd | Combustion control device |
| JP2000297901A (en) * | 1999-04-12 | 2000-10-24 | Babcock Hitachi Kk | Reheat steam temperature control device for boiler |
| CN101338892A (en) * | 2008-06-25 | 2009-01-07 | 中国电力科学研究院 | Thermal power unit reheated steam temperature control method |
| CN101598328A (en) * | 2008-09-28 | 2009-12-09 | 广州粤能电力科技开发有限公司 | The Steam Temperature for Boiler control method and the isolated plant of big rate of load change |
| CN102012017A (en) * | 2010-11-19 | 2011-04-13 | 华北电力大学（保定） | Feedforward signal control method in boiler steam temperature automatic control system |
Non-Patent Citations (1)
| Title |
|---|
| 张立刚: "600MW超临界机组协调控制系统的设计与实现", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, no. 04, 15 April 2011 (2011-04-15) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801890A (en) * | 2017-03-13 | 2017-06-06 | 华能国际电力股份有限公司玉环电厂 | The method for reducing boiler main reheat steam temperature fluctuation during lifting load |
| CN107448926A (en) * | 2017-07-20 | 2017-12-08 | 中国神华能源股份有限公司 | Fired power generating unit reheat steam temperature control system and method |
| CN111006238A (en) * | 2019-11-14 | 2020-04-14 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Method for automatically adjusting up-down position of flame center of hearth of pulverized coal fired boiler with four tangential corners |
| CN112082137A (en) * | 2020-08-18 | 2020-12-15 | 国家能源集团山东石横热电有限公司 | Automatic steam temperature adjusting system of coal-fired boiler |
| CN112082137B (en) * | 2020-08-18 | 2022-08-26 | 国家能源集团山东石横热电有限公司 | Automatic steam temperature adjusting system of coal-fired boiler |
| CN115016576A (en) * | 2022-05-27 | 2022-09-06 | 国能河北沧东发电有限责任公司 | Reheat steam temperature control method and device, readable medium and electronic equipment |
| CN115016576B (en) * | 2022-05-27 | 2024-02-09 | 国能河北沧东发电有限责任公司 | Reheat steam temperature control method and device, readable medium and electronic equipment |
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