CN103268066B - The optimization method that a kind of station boiler runs and device - Google Patents
The optimization method that a kind of station boiler runs and device Download PDFInfo
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Abstract
The present invention proposes the optimization method that a kind of station boiler runs, and comprising: obtain optimum operating condition data; Obtain fired power generating unit current working data; When safety indexes parameter, stability indicator parameter, feature of environmental protection index parameter all meet the condition preset, obtain current working cost of electricity-generating; If find the operating mode identical with current working from optimum operating condition data, then obtain the optimum operating condition cost of electricity-generating of current working; If do not find, then current working parameter is added history floor data; If current working cost of electricity-generating is less than or equal to optimum operating condition cost of electricity-generating, then send the first alarm; Otherwise, then adjusted value and procurement cost loss is obtained; Send the second alarm, and export adjusted value; Constantly adjust oxygen amount and air output according to adjusted value, when a predetermined condition is satisfied, stop adjustment.The present invention also proposes the optimization device that a kind of station boiler runs, and can improve the reliability that station boiler is optimized.
Description
Technical field
The present invention relates to station boiler optimal control, particularly relate to optimization method and the device of the operation of a kind of station boiler.
Background technology
Large-scale thermal power machine group, in operational process, in order to realize the optimizing operation of large-scale thermal power machine group, need carry out parameter adjustment to genset; And to supply enough and appropriate air be necessary condition completely of burning, to control when general coal-powder boiler runs furnace outlet place excess air coefficient α 1.15 ~ 1.25 scope.α is too high or too low is all disadvantageous to boiler combustion efficiency and the thermal efficiency.Traditional thermal power generation unit is generally rely on the operating experience of field operator to judge an optimal operating parameter, there are certain limitation and randomness, cause because operations staff lacks experience thus, operations staff judges not in time or operations staff's error in judgement and cause misoperation, thus causing economic loss and serious consequence, reliability is low, station boiler cost is high.
Summary of the invention
The object of the invention is to the optimization method and the device that propose the operation of a kind of station boiler, the reliability of station boiler optimization can be improved, reduce costs.
The scheme adopted is:
The optimization method that station boiler runs, comprises step:
S1, according to station boiler history floor data, obtain optimum operating condition data; Wherein, described optimum operating condition data comprise: the optimum operating condition score in same load section under same equipment array mode, optimum operating condition air output, optimum operating condition oxygen amount and optimum operating condition cost of electricity-generating;
S2, acquisition fired power generating unit current working data; Wherein, described current working data comprise: load, equipment array mode, safety indexes parameter, stability indicator parameter, feature of environmental protection index parameter, economic index parameter and air output and oxygen amount;
S3, meet default safety condition when described safety indexes parameter, and described stability indicator parameter meets default stability condition, and when described feature of environmental protection index parameter meets default environmental protection condition, obtain current working cost of electricity-generating; Wherein, described current working cost of electricity-generating comprises: coal consumption cost and environmental protection cost;
If S4 finds the operating mode identical with described current working from described optimum operating condition data, then obtain the optimum operating condition cost of electricity-generating of current working; If do not find the operating mode identical with described current working, then described current working parameter is added described history floor data;
If S5 described current working cost of electricity-generating is less than or equal to described optimum operating condition cost of electricity-generating, then send the first alarm; If described current working cost of electricity-generating is greater than described optimum operating condition cost of electricity-generating, then according to the air output under the oxygen amount under current working, the oxygen amount under optimum operating condition, current working, air output under optimum operating condition, obtain adjusted value; Calculate the cost of electricity-generating of current working and the difference of optimum operating condition cost of electricity-generating, obtain cost allowance; Send the second alarm, and export described adjusted value and described cost allowance;
S6, constantly adjust oxygen amount and the air output of station boiler according to described adjusted value, and monitor the operational factor of boiler; When the operational factor of described boiler meets predetermined condition, stop oxygen amount and the air output of adjustment station boiler; Wherein, described operational factor comprises: Stream temperature degree, main vapour pressure, reheater temperature, exhaust gas temperature, vacuum values, cost of electricity-generating.
And the optimization device that a kind of station boiler runs, comprising:
First acquiring unit, for according to station boiler history floor data, obtains optimum operating condition data; Wherein, described optimum operating condition data comprise: the optimum operating condition score in same load section under same equipment array mode, optimum operating condition air output, optimum operating condition oxygen amount and optimum operating condition cost of electricity-generating;
Second acquisition unit, for obtaining fired power generating unit current working data; Wherein, described current working data comprise: load, equipment array mode, safety indexes parameter, stability indicator parameter, feature of environmental protection index parameter, economic index parameter and air output and oxygen amount;
3rd acquiring unit, for meeting default safety condition when described safety indexes parameter, and described stability indicator parameter meets default stability condition, and when described feature of environmental protection index parameter meets default environmental protection condition, obtain current working cost of electricity-generating;
Search unit, if for finding the operating mode identical with described current working from described optimum operating condition data, then obtain the optimum operating condition cost of electricity-generating of current working; If do not find the operating mode identical with described current working, then described current working parameter is added described history floor data;
Alarm unit, if be less than or equal to described optimum operating condition cost of electricity-generating for described current working cost of electricity-generating, then sends the first alarm; If described current working cost of electricity-generating is greater than described optimum operating condition cost of electricity-generating, then according to the air output under the oxygen amount under current working, the oxygen amount under optimum operating condition, current working, air output under optimum operating condition, obtain adjusted value; Calculate the cost of electricity-generating of current working and the difference of optimum operating condition cost of electricity-generating, obtain cost allowance; Send the second alarm, and export described adjusted value and described cost allowance;
Adjustment unit, for constantly adjusting oxygen amount and the air output of station boiler according to described adjusted value, and monitors the operational factor of boiler; When the operational factor of described boiler meets predetermined condition, stop oxygen amount and the air output of adjustment station boiler; Wherein, described operational factor comprises: Stream temperature degree, main vapour pressure, reheater temperature, exhaust gas temperature, vacuum values, cost of electricity-generating.
The present invention is in conjunction with the history floor data of station boiler, with unit boiler stability, security, the feature of environmental protection is that constraint condition carries out optimizing, a history optimum operating condition parameter database is set up through unit long-play, by the operating mode of current acquisition and the operating condition comparison under same equipment array mode in the same load section be stored in history optimizing database, if in history optimum operating condition parameter database, do not find the data corresponding to current working, then current working data are added history floor data, carry out optimizing and set up history optimum operating condition parameter database, if the Optimal Control data found out from history optimum operating condition parameter database under current working compare the cost allowance of optimum operating condition with current working, send warning, and export control data and cost allowance, go to adjust corresponding parameter according to control data, make cost allowance minimum, the reliability of station boiler running optimizatin can be improved like this, reduce costs.
Accompanying drawing explanation
Fig. 1 is an implementing procedure figure of the inventive method;
Fig. 2 is a structural representation of apparatus of the present invention;
Fig. 3 is another structural representation of apparatus of the present invention;
Fig. 4 is the storage rack composition of history optimum operating condition.
Embodiment
The present invention is set about by boiler efficiency, find out several important parameters of operations staff's controllable adjustment, so-called operation controllable parameter and operations staff can directly adjust, and the parameter after adjustment, economy had a significant effect, as oxygen amount, air output, any large-sized boiler is all equipped with oxygen meter, and the size of excess air coefficient can be weighed according to the oxygen content in flue gas.
The present invention proposes the optimization method that a kind of station boiler runs, and implementing procedure with reference to figure 1, can comprise step:
S1, according to station boiler history floor data, obtain optimum operating condition data;
Wherein, optimum operating condition data comprise: the optimum operating condition score in same load section under same equipment array mode, optimum operating condition air output, optimum operating condition oxygen amount and optimum operating condition cost of electricity-generating;
S2, acquisition fired power generating unit current working data;
Obtain fired power generating unit current working data; Wherein, current working data comprise: load, equipment array mode, safety indexes parameter, stability indicator parameter, feature of environmental protection index parameter, economic index parameter and air output and oxygen amount;
S3, acquisition current working cost of electricity-generating;
When safety indexes parameter meets default safety condition, and stability indicator parameter meets default stability condition, and when feature of environmental protection index parameter meets default environmental protection condition, obtains current working cost of electricity-generating;
Concrete, if the absolute value of the difference of target load and instruction load is less than load changing rate, and actual load is greater than or equal to target load, then safety indexes parameter meets default safety condition;
If each security parameters is all at parameter area predetermined separately, then safety index parameter meets default safety conditions;
If each feature of environmental protection parameter is all at parameter area predetermined separately, then feature of environmental protection index parameter meets default feature of environmental protection condition.
If S4 finds the operating mode identical with current working from optimum operating condition data, then obtain the optimum operating condition cost of electricity-generating of current working; If do not find the operating mode identical with current working, then current working parameter is added history floor data;
If S5 current working cost of electricity-generating is less than or equal to optimum operating condition cost of electricity-generating, then send the first alarm; If current working cost of electricity-generating is greater than optimum operating condition cost of electricity-generating, then according to the air output under the oxygen amount under current working, the oxygen amount under optimum operating condition, current working, air output under optimum operating condition, obtain adjusted value; Calculate the cost of electricity-generating of current working and the difference of optimum operating condition cost of electricity-generating, obtain cost allowance; Send the second alarm, and export adjusted value and cost allowance;
First alarm is desktop pop-up window, and/or the first sound prompting device, and/or the first light prompt device; Second reports to the police prompts for another desktop pop-up window, and/or the second sound prompting device, and/or the second light prompt device.Pop-up window may be used for information such as display adjusted value, cost allowance etc.First alarm is for representing that current working situation does not need adjustment; Second alarm is for representing that current working situation need adjust according to the adjusted value obtained.
S6, constantly adjust oxygen amount and the air output of station boiler according to adjusted value, and monitor the operational factor of boiler; When the operational factor of boiler meets predetermined condition, stop oxygen amount and the air output of adjustment station boiler.
Constantly adjust oxygen amount and the air output of station boiler according to described adjusted value, and monitor the operational factor of boiler; When the operational factor of described boiler meets predetermined condition, stop oxygen amount and the air output of adjustment station boiler; Wherein, described operational factor comprises: Stream temperature degree, main vapour pressure, reheater temperature, exhaust gas temperature, vacuum values, cost of electricity-generating.
After execution of step S6, return step S1.
The present invention is in conjunction with the history floor data of station boiler, with unit boiler stability, security, the feature of environmental protection is that constraint condition carries out optimizing, a history optimum operating condition parameter database is set up through unit long-play, by the operating mode of current acquisition and the operating condition comparison under same equipment array mode in the same load section be stored in history optimizing database, if in history optimum operating condition parameter database, do not find the data corresponding to current working, then current working data are added history floor data, carry out optimizing and set up history optimum operating condition parameter database, if the optimum control data found out from history optimum operating condition parameter database under current working compare the cost allowance of optimum operating condition with current working, send warning, and export control data and cost allowance, go to adjust corresponding parameter according to control data, make cost allowance minimum, the reliability of station boiler running optimizatin can be improved like this, reduce costs.
Concrete:
Optimum operating condition data also comprise: the operational factor of the boiler of the optimum in same load section under same equipment array mode;
Step S6 comprises:
A, constantly adjust oxygen amount and the air output of station boiler according to adjusted value;
Obtain the real time execution parameter of boiler;
B, obtain the difference of real time execution parameter and the operational factor of the boiler of corresponding optimum;
C, according to following formula
obtain the running score of boiler; Wherein, F is the running score of boiler; Pc
ifor the operational factor deviation of default boiler; Po
ifor real time execution parameter and the difference of the operational factor of the boiler of corresponding optimum; Abs (X) represents the absolute value getting X; I is the kind of the operational factor of boiler; r
ifor the weight of the operational factor of each boiler; r
1+ r
2+ r
3+ ... + r
k=1;
D, when the running score of boiler is less than or equal to 1, stop the adjustment oxygen amount of station boiler and air output;
E, when the running score of boiler is greater than 1, return steps A.
According to the control complexity of parameters, the permissible variation pc of this parameter can be changed
i, make it be more suitable for actual conditions or change Adjustment precision.
The oxygen amount and the air output that constantly adjust station boiler in operation control the actual motion deviation of these important parameters within the scope of permissible variation, when being less than or equal to regulation operation score value 1; Then be defined as " good operation ", then stop oxygen amount and the air output of station boiler; Otherwise, be " bad operation " then continue adjustment.
Above-mentioned important operational parameter value is important monitored parameter in some operations, as Stream temperature degree, and main vapour pressure, reheater temperature, exhaust gas temperature, the parameters such as cost of electricity-generating.
In the above-described embodiments, the pricing of different operating mode, can obtain according to international computing method, as:
Cost of electricity-generating is coal consumption cost and environmental protection cost sum.Coa consumption rate refers in a fixed time interval, and burn the fossil fired power plant fuel consumed and the ratio exporting electricity, be called for short coal consumption, unit is g/(kwh).
Calculate coal consumption cost and mainly calculate net coal consumption rate, net coal consumption rate index is the main technical economical index in generating plant, and it is the index of reflection power plants generating electricity efficiency of energy utilization.When calculating net coal consumption rate, first we will obtain all parameters calculated required for net coal consumption rate in real time, such as exhaust gas temperature, fuel net calorific value, oxygen amount, coal, steam turbine main steam flow, steam turbine main steam temperature etc.Then according to GB formula
calculating is tried to achieve.Some intermediate parameters used in calculating, as boiler efficiency, pipeline efficiency, station service power consumption rate, heat consumption rate etc., all get with reference to GB formulae discovery.
Environmental protection cost mainly refers to nitrogen-containing oxide (NOX) discharge charge and denitration expense.The discharge costs of nitrogen-containing oxide is the expenses standard that oxides of nitrogen (NOX) discharge capacity is multiplied by the local environmental administration of often discharging monovalent.
The denitration technology of domestic contrast maturation has SCR(SCR), SNCR(non-selective catalytic reduction) two kinds of technical schemes.SCR is mainly used in the fume treatment of large-sized boiler etc., denitration rate can reach more than 80%, the main denitration technology of China's firepower power station coal-burning boiler is SCR denitration technology, and SCR denitration technology is high with its removal efficiency, adapts to current environmental requirement and obtains power industry and pay much attention to and apply widely.
SCR device operation logic is as follows:
Ammonia is injected in high-temperature flue gas denitrification apparatus as denitrfying agent, under the effect of catalyzer, NOx in flue gas is decomposed into N2 and H2O, and its reaction formula is as follows:
Catalyzer
4NO+4NH3+O2→4N2+6H2O
Catalyzer
NO+NO2+2NH3→2N2+3H2O
General by using suitable catalyzer, above-mentioned reaction effectively can be carried out in the temperature range of 200 DEG C ~ 450 DEG C, when NH3/NO=1, can reach the denitration efficiency of 80 ~ 90%.
SCR denitration device running wastage is ammonia usage, power consumption, catalyst change, maintenance, cost of labor, equipment amortization etc. mainly.
The denitration cost that we calculate mainly calculates ammonia spraying amount cost during denitration, and the ammonia amount being calculated as every generating a kilowatt denitration consumption of denitration cost is multiplied by the cost of ammonia.
When obtaining history floor data, get content and the computable ring guaranteed cost of nitrogen-containing oxide.
Current working cost of electricity-generating can be obtained according to coal consumption cost and environmental protection cost.
Wherein, step S1 is specially:
1, from the history floor data of fired power generating unit, the load under different operating mode, equipment array mode, safety indexes parameter, stability indicator parameter, feature of environmental protection index parameter, economic index parameter and air output and oxygen amount is obtained;
Wherein, safety indexes parameter comprises: main steam pressure, main steam temperature, reheat steam temperature, reheated steam pressure; Stability indicator parameter comprises: actual load, target load, instruction load, load changing rate; Feature of environmental protection index parameter comprises: the amount of nitrogen oxides in fume emission in amount of sulfur dioxide, fume emission, unburned carbon in flue dust; Economic index parameter comprises: turbine efficiency, boiler efficiency, generating efficiency, cost of electricity-generating;
Due to the specific targets of different power plant parameter, weight, higher limit, lower limit can be different, we can reserve interface in a program, and user can input at interface.
History optimum operating condition deposit framework as Fig. 4.
2, judge whether safety indexes parameter meets the safety condition preset; Judge whether stability indicator parameter meets the stability condition preset; Judge whether feature of environmental protection index parameter meets the environmental protection condition preset;
When safety indexes parameter meets default safety condition, and stability indicator parameter meets default stability condition, and when feature of environmental protection index parameter meets default environmental protection condition, obtain the actual value that economic index parameter under each operating mode is corresponding, wherein, actual value comprises cost of electricity-generating;
3, according to each default economic index higher limit, each default economic index lower limit and each economic index score of calculated with actual values, each economic index score is multiplied by corresponding index weights, then the final score of each index parameter is added summation and obtains operating mode score;
Because the unit of every economic index is generally different, not there is comparability, therefore, often when calculating each economic index score, first will will carry out dimensionless process to each economic index.In essence, the process of indices non-dimension namely solves the process of subordinate function, and various nondimensionalization formula, namely asks the subordinate function of index.At this, can selection and comparison easy, be easy to operate linear pattern nondimensionalization method, meanwhile, economic index comprises again efficiency type index and cost-effectivenes index, and these efficiency type indexs are generally that value is the bigger the better, and cost type is then the smaller the better.Therefore, wherein in an embodiment, calculate each economic index score according to formula (1) respectively,
Wherein, in formula (1), y is economic index score, and x is the actual value corresponding with economic index, x
minfor the economic index lower limit preset, x
maxfor the economic index higher limit preset.
4, under same operating, operating mode score is carried out rank from high to low, preserve the oxygen amount of the highest operating mode score of mark, corresponding air output and correspondence, corresponding cost of electricity-generating; Wherein, same operating refers to electricity generation boiler equipment and is in same load section, has same equipment array mode.
By above-mentioned steps 1 to 4, the optimum operating condition parameter that different operating mode is corresponding can be obtained.
In addition, in order to improve station boiler optimization efficiency, can make further improvements above-described embodiment:
When the current loads rate of current working is greater than or equal to predetermined value, just carry out step S3; When the load of current working is less than predetermined value, the rate of load condensate exporting current working is less than the prompting of predetermined value; Wherein current loads rate is the ratio of the load under current working and the rated load under current working.
Because controling parameters is always in fluctuation, it is unpractical for requiring that operations staff runs just in optimal parameter, generally, actual operation parameters and optimum operation controllable parameter allow certain departing from, for this reason, the permission control deviation of our preset in advance one " operation controllable parameter ", in step s 5, according to the air output under the oxygen amount under current working, the oxygen amount under optimum operating condition, current working, air output under optimum operating condition, the step obtaining adjusted value comprises:
Obtain the difference of the air output under the difference of the oxygen amount under current working and the oxygen amount under optimum operating condition, current working and the air output under optimum operating condition, and combine the oxygen flow regulation scope and air output range of adjustment preset, be adjusted value; Wherein, adjusted value comprises oxygen amount adjusted value and air output adjusted value.
The invention allows for the optimization device that a kind of station boiler runs, its structural representation please refer to Fig. 2, comprising:
First acquiring unit, for according to station boiler history floor data, obtains optimum operating condition data; Wherein, optimum operating condition data comprise: the optimum operating condition score in same load section under same equipment array mode, optimum operating condition air output, optimum operating condition oxygen amount and optimum operating condition cost of electricity-generating; Wherein, current working cost of electricity-generating comprises: coal consumption cost and environmental protection cost;
Second acquisition unit, for obtaining fired power generating unit current working data; Wherein, current working data comprise: load, equipment array mode, safety indexes parameter, stability indicator parameter, feature of environmental protection index parameter, economic index parameter and air output and oxygen amount;
3rd acquiring unit, for meeting default safety condition when safety indexes parameter, and stability indicator parameter meets default stability condition, and when feature of environmental protection index parameter meets default environmental protection condition, obtains current working cost of electricity-generating; Wherein, current working cost of electricity-generating comprises: coal consumption cost and environmental protection cost;
Searching unit, if for finding the operating mode identical with current working from optimum operating condition data, then obtaining the optimum operating condition cost of electricity-generating of current working; If do not find the operating mode identical with current working, then current working parameter is added history floor data;
Alarm unit, if be less than or equal to optimum operating condition cost of electricity-generating for current working cost of electricity-generating, then sends the first alarm; If current working cost of electricity-generating is greater than optimum operating condition cost of electricity-generating, then according to the air output under the oxygen amount under current working, the oxygen amount under optimum operating condition, current working, air output under optimum operating condition, obtain adjusted value, send the second alarm, and export adjusted value;
Adjustment unit, for constantly adjusting oxygen amount and the air output of station boiler according to adjusted value, when cost allowance is less than predetermined costs value, stops oxygen amount and the air output of adjustment station boiler.
The present invention is in conjunction with the history floor data of station boiler, with unit boiler stability, security, the feature of environmental protection is that constraint condition carries out optimizing, a history optimum operating condition parameter database is set up through unit long-play, by the operating mode of current acquisition and the operating condition comparison under same equipment array mode in the same load section be stored in history optimizing database, if in history optimum operating condition parameter database, do not find the data corresponding to current working, then current working data are added history floor data, carry out optimizing and set up history optimum operating condition parameter database, if the Optimal Control data found out from history optimum operating condition parameter database under current working are comparing the cost allowance of optimum operating condition with current working, send warning, and export control data and cost allowance, go to adjust corresponding parameter according to control data, make cost allowance minimum, the reliability of station boiler running optimizatin can be improved like this, reduce costs.
Optimum operating condition data also comprise: the operational factor of the boiler of the optimum in same load section under same equipment array mode;
Adjustment unit performs following operating process:
A, constantly adjust oxygen amount and the air output of station boiler according to adjusted value;
Obtain the real time execution parameter of boiler;
B, obtain the difference of real time execution parameter and the operational factor of the boiler of corresponding optimum;
C, according to following formula
obtain the running score of boiler; Wherein, F is the running score of boiler; Pc
ifor the operational factor deviation of default boiler; Po
ifor real time execution parameter and the difference of the operational factor of the boiler of corresponding optimum; α bs (X) represents the absolute value getting X; I is the kind of the operational factor of boiler; r
ifor the weight of the operational factor of each boiler; r
1+ r
2+ r
3+ ... + r
k=1;
D, when the running score of boiler is less than or equal to 1, stop the adjustment oxygen amount of station boiler and air output;
E, when the running score of boiler is greater than 1, adjustment unit returns execution steps A.
Because controling parameters is always in fluctuation, it is unpractical for requiring that operations staff runs just in optimal parameter, generally, actual operation parameters and optimum operation controllable parameter allow certain departing from, for this reason, the permission control deviation of our preset in advance one " operation controllable parameter ".Therefore, alarm unit according to the air output under the oxygen amount under current working, the oxygen amount under optimum operating condition, current working, air output under optimum operating condition, when obtaining adjusted value,
Obtain the difference of the air output under the difference of the oxygen amount under current working and the oxygen amount under optimum operating condition, current working and the air output under optimum operating condition, and combine the oxygen flow regulation scope and air output range of adjustment preset, be adjusted value; Wherein, adjusted value comprises oxygen amount adjusted value and air output adjusted value.
Wherein, the first alarm is desktop pop-up window, and/or the first sound prompting device, and/or the first light prompt device; Second reports to the police prompts for another desktop pop-up window, and/or the second sound prompting device, and/or the second light prompt device.
In order to improve station boiler optimization efficiency further, following improvement can be done: in the optimization device that station boiler runs, increase comparing unit; Its structural representation, please refer to Fig. 3,
Wherein, current loads rate for obtaining the current loads rate of current working, and compares with predetermined value by comparing unit;
When the current loads rate of current working is greater than or equal to predetermined value, just notify that the 3rd acquiring unit carries out corresponding operating; When the load of current working is less than predetermined value, the rate of load condensate exporting current working is less than the prompting of predetermined value; Wherein, current loads rate is the ratio of the load under current working and the rated load under current working.
In the 3rd acquiring unit, if the absolute value of the difference of target load and instruction load is less than load changing rate, and actual load is greater than or equal to target load, then safety indexes parameter meets default safety condition;
If each security parameters is all at parameter area predetermined separately, then safety index parameter meets default safety conditions;
If each feature of environmental protection parameter is all at parameter area predetermined separately, then feature of environmental protection index parameter meets default feature of environmental protection condition.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. an optimization method for station boiler operation, is characterized in that, comprise step:
S1, according to station boiler history floor data, obtain optimum operating condition data; Wherein, described optimum operating condition data comprise: the optimum operating condition score in same load section under same equipment array mode, optimum operating condition air output, optimum operating condition oxygen amount and optimum operating condition cost of electricity-generating;
S2, acquisition fired power generating unit current working data; Wherein, described current working data comprise: load, equipment array mode, safety indexes parameter, stability indicator parameter, feature of environmental protection index parameter, economic index parameter and air output and oxygen amount;
S3, meet default safety condition when described safety indexes parameter, and described stability indicator parameter meets default stability condition, and when described feature of environmental protection index parameter meets default environmental protection condition, obtain current working cost of electricity-generating; Wherein, described current working cost of electricity-generating comprises: coal consumption cost and environmental protection cost;
If S4 finds the operating mode identical with current working from described optimum operating condition data, then obtain the optimum operating condition cost of electricity-generating of current working; If do not find the operating mode identical with described current working, then described current working data are added described history floor data;
If S5 described current working cost of electricity-generating is less than or equal to described optimum operating condition cost of electricity-generating, then send the first alarm; If described current working cost of electricity-generating is greater than described optimum operating condition cost of electricity-generating, then according to the air output under the oxygen amount under current working, the oxygen amount under optimum operating condition, current working, air output under optimum operating condition, obtain adjusted value; Calculate the cost of electricity-generating of current working and the difference of optimum operating condition cost of electricity-generating, obtain cost allowance; Send the second alarm, and export described adjusted value and described cost allowance;
S6, constantly adjust oxygen amount and the air output of station boiler according to described adjusted value, and monitor the operational factor of boiler; When the operational factor of described boiler meets predetermined condition, stop oxygen amount and the air output of adjustment station boiler; Wherein, described operational factor comprises: Stream temperature degree, main vapour pressure, reheater temperature, exhaust gas temperature, vacuum values, cost of electricity-generating.
2. the optimization method of station boiler operation according to claim 1, it is characterized in that, described optimum operating condition data also comprise: the operational factor of the boiler of the optimum in same load section under same equipment array mode;
Described step S6 comprises:
A, constantly adjust oxygen amount and the air output of station boiler according to described adjusted value;
Obtain the real time execution parameter of boiler;
B, obtain the difference of described real time execution parameter and the operational factor of the boiler of corresponding optimum;
C, according to following formula
obtain the running score of boiler; Wherein, F is the running score of boiler; Pc
ifor the operational factor deviation of default boiler; Po
ifor described real time execution parameter and the difference of the operational factor of the boiler of corresponding optimum; Abs (X) represents the absolute value getting X; I is the kind of the operational factor of boiler; r
ifor the weight of the operational factor of each boiler; r
1+r
2+r
3++ r
k=1;
D, when the running score of described boiler is less than or equal to 1, stop the adjustment oxygen amount of station boiler and air output;
E, when the running score of described boiler is greater than 1, return the step of real time execution parameter constantly adjusting the oxygen amount of station boiler and air output, acquisition boiler according to described adjusted value.
3. the optimization method of station boiler operation according to claim 1, it is characterized in that, in described step S5, described according to the air output under the oxygen amount under current working, the oxygen amount under optimum operating condition, current working, air output under optimum operating condition, the step obtaining adjusted value comprises:
Obtain the difference of the air output under the difference of the oxygen amount under current working and the oxygen amount under optimum operating condition, current working and the air output under optimum operating condition, and combine the oxygen flow regulation scope and air output range of adjustment preset, obtain described adjusted value; Wherein, described adjusted value comprises oxygen amount adjusted value and air output adjusted value.
4. the optimization method of station boiler operation according to claim 1, it is characterized in that, described first alarm is desktop pop-up window, and/or the first sound prompting device, and/or the first light prompt device; Described second reports to the police prompts for another desktop pop-up window, and/or the second sound prompting device, and/or the second light prompt device.
5. the optimization method that the station boiler according to any one of Claims 1-4 runs, is characterized in that,
When the current loads rate of described current working is greater than or equal to predetermined value, just carry out described step S3; When the load of described current working is less than described predetermined value, the rate of load condensate exporting current working is less than the prompting of described predetermined value; Wherein said current loads rate is the ratio of the load under described current working and the rated load under current working.
6. an optimization device for station boiler operation, is characterized in that, comprising:
First acquiring unit, for according to station boiler history floor data, obtains optimum operating condition data; Wherein, described optimum operating condition data comprise: the optimum operating condition score in same load section under same equipment array mode, optimum operating condition air output, optimum operating condition oxygen amount and optimum operating condition cost of electricity-generating;
Second acquisition unit, for obtaining fired power generating unit current working data; Wherein, described current working data comprise: load, equipment array mode, safety indexes parameter, stability indicator parameter, feature of environmental protection index parameter, economic index parameter and air output and oxygen amount;
3rd acquiring unit, for meeting default safety condition when described safety indexes parameter, and described stability indicator parameter meets default stability condition, and when described feature of environmental protection index parameter meets default environmental protection condition, obtain current working cost of electricity-generating; Wherein, described current working cost of electricity-generating comprises: coal consumption cost and environmental protection cost;
Search unit, if for finding the operating mode identical with current working from described optimum operating condition data, then obtain the optimum operating condition cost of electricity-generating of current working; If do not find the operating mode identical with described current working, then described current working data are added described history floor data;
Alarm unit, if be less than or equal to described optimum operating condition cost of electricity-generating for described current working cost of electricity-generating, then sends the first alarm; If described current working cost of electricity-generating is greater than described optimum operating condition cost of electricity-generating, then according to the air output under the oxygen amount under current working, the oxygen amount under optimum operating condition, current working, air output under optimum operating condition, obtain adjusted value; Calculate the cost of electricity-generating of current working and the difference of optimum operating condition cost of electricity-generating, obtain cost allowance; Send the second alarm, and export described adjusted value and described cost allowance;
Adjustment unit, for constantly adjusting oxygen amount and the air output of station boiler according to described adjusted value, and monitors the operational factor of boiler; When the operational factor of described boiler meets predetermined condition, stop oxygen amount and the air output of adjustment station boiler; Wherein, described operational factor comprises: Stream temperature degree, main vapour pressure, reheater temperature, exhaust gas temperature, vacuum values, cost of electricity-generating.
7. the optimization device of station boiler operation according to claim 6, is characterized in that,
Described optimum operating condition data also comprise: the operational factor of the boiler of the optimum in same load section under same equipment array mode;
Described adjustment unit performs following operating process:
A, constantly adjust oxygen amount and the air output of station boiler according to described adjusted value;
Obtain the real time execution parameter of boiler;
B, obtain the difference of described real time execution parameter and the operational factor of the boiler of corresponding optimum;
C, according to following formula
obtain the running score of boiler; Wherein, F is the running score of boiler; Pc
ifor the operational factor deviation of default boiler; Po
ifor described real time execution parameter and the difference of the operational factor of the boiler of corresponding optimum; Abs (X) represents the absolute value getting X; I is the kind of the operational factor of boiler; r
ifor the weight of the operational factor of each boiler; r
1+r
2+r
3++ r
k=1;
D, when the running score of described boiler is less than or equal to 1, stop the adjustment oxygen amount of station boiler and air output;
E, when the running score of described boiler is greater than 1, described adjustment unit returns the process of real time execution parameter performing and constantly adjust the oxygen amount of station boiler and air output, acquisition boiler according to described adjusted value.
8. the optimization device that runs of station boiler according to claim 6, is characterized in that, described alarm unit according to the air output under the oxygen amount under current working, the oxygen amount under optimum operating condition, current working, air output under optimum operating condition, when obtaining adjusted value,
Obtain the difference of the air output under the difference of the oxygen amount under current working and the oxygen amount under optimum operating condition, current working and the air output under optimum operating condition, and combine the oxygen flow regulation scope and air output range of adjustment preset, obtain described adjusted value; Wherein, described adjusted value comprises oxygen amount adjusted value and air output adjusted value.
9. the optimization device of station boiler operation according to claim 6, it is characterized in that, described first alarm is desktop pop-up window, and/or the first sound prompting device, and/or the first light prompt device; Described second reports to the police prompts for another desktop pop-up window, and/or the second sound prompting device, and/or the second light prompt device.
10. the optimization device that the station boiler according to any one of claim 6 to 9 runs, is characterized in that, the optimization device that described station boiler runs also comprises: comparing unit;
Wherein, described current loads rate for obtaining the current loads rate of described current working, and compares with predetermined value by comparing unit;
When the current loads rate of described current working is greater than or equal to predetermined value, just notify that described 3rd acquiring unit carries out corresponding operating; When the load of described current working is less than described predetermined value, the rate of load condensate exporting current working is less than the prompting of described predetermined value; Wherein, described current loads rate is the ratio of the load under described current working and the rated load under current working.
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Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Patentee after: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. Address before: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Patentee before: Electrical Power Research Institute of Guangdong Power Grid Corporation |