CN106339821A - Coal-fired set largest power generation load data processing method based on coal moisture - Google Patents
Coal-fired set largest power generation load data processing method based on coal moisture Download PDFInfo
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Abstract
The invention discloses a coal-fired set largest power generation load data processing method based on coal moisture. The method comprises steps that lab test analysis on incoming coal moisture of a coal pulverizer is carried out; a largest output of the coal pulverizer under reference moisture and ventilation resistance of the coal pulverizer under the largest output are queried; a largest grinding output of the coal pulverizer is determined according to the largest output under the coal moisture and the reference moisture of the coal pulverizer; a largest drying output of the coal pulverizer is determined according to inlet-outlet pressure difference of the coal pulverizer and the ventilation resistance of the coal pulverizer under the largest output; the smaller one of the largest grinding output of the coal pulverizer and the largest drying out of the coal pulverizer is selected as the largest output of the coal pulverizer; all the largest outputs of the coal pulverizer are gathered; a largest power generation load of the set is determined according to set equivalent load coal feeding amount and all the largest outputs of the coal pulverizer. Through the method, timely forecast of the largest output of the coal pulverizer and an adjustable set output can be realized, electric power scheduling operation staff are facilitated to timely master power generation capability change situations of sets in a whole province, and thereby safe, economical and high-quality power grid operation is guaranteed.
Description
Technical field
The present invention relates to technical field of power systems is and in particular to a kind of coal unit maximum generation based on ature of coal moisture content
Load data processing method.
Background technology
Recent year electricity needs is vigorous, electric coal consumption consumption sustainable growth, as the thermal power plant consuming coal rich and influential family
Electricity coal supply also be becoming tight by day, and electricity coal supply switchs to seller's market from the buyer's market in past.Supply and demand due to electric coal resource is put down
Weighing apparatus is destroyed, and promotes electricity power enterprise's electricity coal supply to become more diversified, and electric ature of coal amount fluctuating range increases, and most of power plant use
Coal differs larger with boiler design coal, causes boiler operatiopn state off-design value, thus the security to boiler combustion
Bring a series of detrimental effects, the equipment deficiency also showed increased of initiation with economy, mainly affect substantially following several
Aspect: (1) boiler output declines, unit can not completely be sent out；(2) boiler efficiency reduces, and gross coal consumption rate increases；(3) coal is changeable, coal
Shoddyization, makes the combustion-supporting oil mass of power plant increase；(4) Boiler Furnace slagging, heating surface overtemperature；(5) fuel cost and cost of electricity-generating increase.
Currently for coal unit ature of coal state, electric dispatching department relies on electricity power enterprise voluntarily to report it is impossible to real substantially
When accurately understand the whole province's unit generation capacity variation situation it is impossible to guarantee that power grid security high-quality is run.Accordingly, it would be desirable to coal burning machine
Group ature of coal state is carried out science, is assessed in real time and effectively, and then quantifies the influence degree exerted oneself adjustable to unit.
Content of the invention
The technical problem to be solved is to provide one kind to be based on ature of coal moisture content for above-mentioned the deficiencies in the prior art
Coal unit maximum generation load data processing method, this based on the coal unit maximum generation load data of ature of coal moisture content at
Reason method achieves coal pulverizer EIAJ and the adjustable timely forecast exerted oneself of unit, and its result of study is conducive to power scheduling to transport
Administrative staff grasps the whole province's unit generation capacity variation situation in time it is ensured that power grid security, economy, high-quality are run.
For realizing above-mentioned technical purpose, the technical scheme that the present invention takes is:
Based on the coal unit maximum generation load data processing method of ature of coal moisture content, comprise the following steps:
(1) coal pulverizer is entered with coal moisture content and carry out assay, determine ature of coal moisture content；
(2) determine flowing resistance under the EIAJ of EIAJ and coal pulverizer under the benchmark moisture of coal pulverizer；
(3) exerted oneself by maximum grinding that EIAJ under the benchmark moisture of ature of coal moisture content and coal pulverizer determines coal pulverizer；
(4) flowing resistance under differential pressure and coal pulverizer EIAJ is imported and exported by coal pulverizer and determine that the maximum of coal pulverizer dries out
Power；
(5) select coal pulverizer maximum grind exert oneself and the maximum drying capacity of coal pulverizer in little person as coal pulverizer maximum
Exert oneself；
(6) collect the EIAJ of all coal pulverizers；
(7) unit maximum generation load is determined by the EIAJ of unit equivalent load coal-supplying amount and all coal pulverizers.
As further improved technical scheme of the present invention, described step (3) includes:
Exerted oneself by maximum grinding that EIAJ under the benchmark moisture of ature of coal moisture content and coal pulverizer determines coal pulverizer, coal pulverizer
Maximum grinding is exerted oneself as: b1=b0* [1+(10-m) * 0.0114], and wherein b1 is that maximum grinding of coal pulverizer is exerted oneself, and b0 is coal-grinding
EIAJ under the benchmark moisture of machine, m is ature of coal moisture content.
As further improved technical scheme of the present invention, described step (4) includes:
Measurement coal pulverizer import wind pressure and coal pulverizer go out one's intention as revealed in what one says powder pressure, determine that differential pressure: △ p=p1-p2 imported and exported by coal pulverizer,
Wherein △ p imports and exports differential pressure for coal pulverizer, and p1 is actual measurement coal pulverizer import wind pressure, and p2 is that actual measurement coal pulverizer goes out one's intention as revealed in what one says powder pressure
Power；
The maximum drying capacity that flowing resistance under differential pressure and coal pulverizer EIAJ determines coal pulverizer, mill are imported and exported by coal pulverizer
The maximum drying capacity of coal machine is: b2=b* (△ pm/ △ p)0.5, wherein b2 is the maximum drying capacity of coal pulverizer, and b is currently real
Survey pulverizer capacity, △ pm is flowing resistance under the EIAJ of coal pulverizer.
As further improved technical scheme of the present invention, described step (5) includes:
Coal pulverizer maximum is selected to grind the little person exerting oneself in the maximum drying capacity with coal pulverizer as the EIAJ of coal pulverizer, mill
The EIAJ of coal machine is bmax=min (b1, b2), and wherein bmax is the EIAJ of coal pulverizer, and b1 is that the maximum of coal pulverizer is ground
Grind power, b2 is the maximum drying capacity of coal pulverizer.
As further improved technical scheme of the present invention, described step (6) includes:
Collect the EIAJ of all coal pulverizers, the EIAJ sum of all coal pulverizers is: btotal=∑ bmax, wherein btotal
For the EIAJ sum of all coal pulverizers, bmax is the EIAJ of each coal pulverizer.
As further improved technical scheme of the present invention, described step (7) includes:
The measurement actual coal-supplying amount of unit and the generator power of unit, determine unit equivalent load coal-supplying amount: r=r1/p, wherein r
For unit equivalent load coal-supplying amount, r1 is the actual coal-supplying amount of unit, and p is the generator power of unit；
Unit maximum generation load is determined by unit equivalent load coal-supplying amount and all coal pulverizer EIAJs, unit is maximum to be sent out
Electric load is pmax=btotal/ r, wherein pmax are unit maximum generation load, btotalEIAJ for all coal pulverizers
Sum.
The data that the present invention is surveyed based on coal pulverizer real time execution, is born by coal pulverizer EIAJ and unit maximum generation
Lotus realizes the adjustable timely forecast exerted oneself of unit, and its result of study is conducive to power scheduling operations staff to grasp the whole province's unit in time
Generating capacity situation of change, such that it is able to efficiently be assessed to the whole province's unit generation capacity variation situation, final electric power is adjusted
Degree operations staff can lift scheduling by the whole province's unit generation capacity variation situation and control electrical network ability, most optimum distribution of resources
Ability, depth Risk-recovery ability, science decision managerial ability, realize the science organization of power generation, accurately commander, prediction refer to
Lead and efficiently coordinate it is ensured that power grid security, economy, high-quality are run.
Specific embodiment
Below the specific embodiment of the present invention is further illustrated:
Based on the coal unit maximum generation load data processing method of ature of coal moisture content, comprise the following steps:
(1) coal pulverizer is entered with coal moisture content and carry out assay, determine ature of coal moisture content；
(2) model according to coal pulverizer, inquiry data is so that it is determined that EIAJ and coal pulverizer under the benchmark moisture of coal pulverizer
Flowing resistance under EIAJ；
(3) exerted oneself by maximum grinding that EIAJ under the benchmark moisture of ature of coal moisture content and coal pulverizer determines coal pulverizer；
(4) flowing resistance under differential pressure and coal pulverizer EIAJ is imported and exported by coal pulverizer and determine that the maximum of coal pulverizer dries out
Power；
(5) select coal pulverizer maximum grind exert oneself and the maximum drying capacity of coal pulverizer in little person as coal pulverizer maximum
Exert oneself；
(6) collect the EIAJ of all coal pulverizers；
(7) unit maximum generation load is determined by the EIAJ of unit equivalent load coal-supplying amount and all coal pulverizers.
Further, described step (3) includes: true by EIAJ under the benchmark moisture of ature of coal moisture content and coal pulverizer
The maximum grinding determining coal pulverizer is exerted oneself, and maximum grinding of coal pulverizer is exerted oneself as: b1=b0* [1+(10-m) * 0.0114], wherein b1
Maximum grinding for coal pulverizer is exerted oneself, and b0 is EIAJ under the benchmark moisture of coal pulverizer, and m is ature of coal moisture content.
Further, described step (4) includes: measurement coal pulverizer import wind pressure and coal pulverizer go out one's intention as revealed in what one says powder pressure,
Determine that differential pressure imported and exported by coal pulverizer: △ p=p1-p2, wherein △ p import and export differential pressure for coal pulverizer, p1 is that actual measurement coal pulverizer enters one's intention as revealed in what one says
Pressure, p2 is that actual measurement coal pulverizer goes out one's intention as revealed in what one says powder pressure；Ventilation resistance under differential pressure and coal pulverizer EIAJ is imported and exported by coal pulverizer
Power determines the maximum drying capacity of coal pulverizer, and the maximum drying capacity of coal pulverizer is: b2=b* (△ pm/ △ p)0.5, wherein b2 is
The maximum drying capacity of coal pulverizer, b is current actual measurement pulverizer capacity, and △ pm is flowing resistance under the EIAJ of coal pulverizer.
Further, described step (5) includes: selects maximum grinding of coal pulverizer to exert oneself and coal pulverizer maximum drying capacity
In little person as coal pulverizer EIAJ, the EIAJ of coal pulverizer is bmax=min (b1, b2), and wherein bmax is coal-grinding
The EIAJ of machine, b1 is that maximum grinding of coal pulverizer is exerted oneself, and b2 is the maximum drying capacity of coal pulverizer.
Further, described step (6) includes: collects the EIAJ of all coal pulverizers, the maximum of all coal pulverizers
Sum of exerting oneself is: btotal=∑ bmax, wherein btotalFor the EIAJ sum of all coal pulverizers, bmax is each coal pulverizer
EIAJ.
Further, described step (7) includes: the generator power of the measurement actual coal-supplying amount of unit and unit, determines
Unit equivalent load coal-supplying amount: r=r1/p, wherein r are unit equivalent load coal-supplying amount, r1 is the actual coal-supplying amount of unit, and p is machine
The generator power of group；Determine that unit maximum generation is born by unit equivalent load coal-supplying amount and all coal pulverizer EIAJs
Lotus, unit maximum generation load is pmax=btotal/ r, wherein pmax are unit maximum generation load, btotalFor all coal-grindings
The EIAJ sum of machine.
The present invention is made specifically introduce below in conjunction with above-mentioned implementation process:
Certain 1000mw grade configures 6 model hp1163 medium-speed pulverizers, EIAJ under the benchmark moisture of every coal pulverizer
For 94t/h, under EIAJ, flowing resistance is 4600pa, and its ature of coal situation is carried out with real-time assessment, carries out adjustable interval of exerting oneself
Shown in being analyzed as follows:
The coal pulverizer online monitoring data of this unit is as follows:
| Measuring point | Numerical value | Unit |
| Generator power | 670.0462 | mw |
| Coal pulverizer a goes out one's intention as revealed in what one says powder pressure | -0.127 | kpa |
| Coal pulverizer b goes out one's intention as revealed in what one says powder pressure | 2.101143 | kpa |
| Coal pulverizer c goes out one's intention as revealed in what one says powder pressure | 2.841 | kpa |
| Coal pulverizer d goes out one's intention as revealed in what one says powder pressure | 2.975 | kpa |
| Coal pulverizer e goes out one's intention as revealed in what one says powder pressure | 2.145 | kpa |
| Coal pulverizer f goes out one's intention as revealed in what one says powder pressure | 3.954118 | kpa |
| Coal pulverizer a import wind pressure | -0.12142 | kpa |
| Coal pulverizer b import wind pressure | 5.576667 | kpa |
| Coal pulverizer c import wind pressure | 6.3876 | kpa |
| Coal pulverizer d import wind pressure | 6.48 | kpa |
| Coal pulverizer e import wind pressure | 6.539616 | kpa |
| Coal pulverizer f import wind pressure | 6.598538 | kpa |
| Feeder a coal-supplying amount | -0.05 | t/h |
| Feeder b coal-supplying amount | 69.19967 | t/h |
| Feeder c coal-supplying amount | 68.92256 | t/h |
| Feeder d coal-supplying amount | 63.963 | t/h |
| Feeder e coal-supplying amount | 64.47578 | t/h |
| Feeder f coal-supplying amount | 65.09285 | t/h |
| Coal pulverizer a goes out one's intention as revealed in what one says powder temperature | 72.44086 | ℃ |
| Coal pulverizer b goes out one's intention as revealed in what one says powder temperature | 73.891 | ℃ |
| Coal pulverizer c goes out one's intention as revealed in what one says powder temperature | 56.41829 | ℃ |
| Coal pulverizer d goes out one's intention as revealed in what one says powder temperature | 68.24475 | ℃ |
| Coal pulverizer e goes out one's intention as revealed in what one says powder temperature | 56.03647 | ℃ |
| Coal pulverizer f goes out one's intention as revealed in what one says powder temperature | 55.446 | ℃ |
| Coal pulverizer a import air temperature | 69.03661 | ℃ |
| Coal pulverizer b import air temperature | 211.9934 | ℃ |
| Coal pulverizer c import air temperature | 272.1214 | ℃ |
| Coal pulverizer d import air temperature | 200.977 | ℃ |
| Coal pulverizer e import air temperature | 276.3871 | ℃ |
| Coal pulverizer f import air temperature | 250.4344 | ℃ |
| Coal pulverizer a ature of coal moisture content | 0 | % |
| Coal pulverizer b ature of coal moisture content | 12.34 | % |
| Coal pulverizer c ature of coal moisture content | 18.21 | % |
| Coal pulverizer d ature of coal moisture content | 13.40 | % |
| Coal pulverizer e ature of coal moisture content | 18.72 | % |
| Coal pulverizer f ature of coal moisture content | 18.85 | % |
Wherein the actual coal-supplying amount of unit is feeder a coal-supplying amount, feeder b coal-supplying amount, feeder c coal-supplying amount, feeder d to coal
The summation of amount, feeder e coal-supplying amount and feeder f coal-supplying amount；Current actual measurement coal pulverizer a exert oneself equal with feeder a coal-supplying amount,
Current actual measurement coal pulverizer b exerts oneself equal with feeder b coal-supplying amount, and current actual measurement coal pulverizer c exerts oneself and feeder c coal-supplying amount phase
Exert oneself equal with feeder d coal-supplying amount Deng, current actual measurement coal pulverizer d, current actual measurement coal pulverizer e exerts oneself and feeder e coal-supplying amount
Equal, current actual measurement coal pulverizer f exerts oneself equal with feeder f coal-supplying amount.
It is -0.05 from upper table coal pulverizer a coal-supplying amount, coal pulverizer a does not work, therefore coal pulverizer a does not need to utilize
Above-mentioned formula carries out calculating the maximum drying capacity of coal pulverizer a and maximum grinding is exerted oneself, the maximum drying capacity of coal pulverizer a and
Big grinding is exerted oneself and is 0；Remaining coal pulverizer all calculates the maximum drying capacity of coal pulverizer using above-mentioned formula, maximum is ground
Power and equivalent load coal-supplying amount, are calculated result as follows:
| Detailed | Unit | Result of calculation |
| The maximum grinding of coal pulverizer a is exerted oneself | t/h | 0 |
| Coal pulverizer a maximum drying capacity | t/h | 0 |
| Coal pulverizer a EIAJ | t/h | 0 |
| The maximum grinding of coal pulverizer b is exerted oneself | t/h | 91.49 |
| Coal pulverizer b maximum drying capacity | t/h | 79.61 |
| Coal pulverizer b EIAJ | t/h | 79.61 |
| The maximum grinding of coal pulverizer c is exerted oneself | t/h | 85.20 |
| Coal pulverizer c maximum drying capacity | t/h | 78.49 |
| Coal pulverizer c EIAJ | t/h | 78.49 |
| The maximum grinding of coal pulverizer d is exerted oneself | t/h | 90.36 |
| Coal pulverizer d maximum drying capacity | t/h | 73.28 |
| Coal pulverizer d EIAJ | t/h | 73.28 |
| The maximum grinding of coal pulverizer e is exerted oneself | t/h | 84.66 |
| Coal pulverizer e maximum drying capacity | t/h | 65.97 |
| Coal pulverizer e EIAJ | t/h | 65.97 |
| The maximum grinding of coal pulverizer f is exerted oneself | t/h | 84.52 |
| Coal pulverizer f maximum drying capacity | t/h | 85.85 |
| Coal pulverizer f EIAJ | t/h | 84.52 |
| The EIAJ of all coal pulverizers | t/h | 381.87 |
| Equivalent load coal-supplying amount | t/mwh | 0.495 |
| Maximum generation load | mw | 771.5 |
The data that the present invention is surveyed based on coal pulverizer real time execution, real by coal pulverizer EIAJ and unit maximum generation load
The existing adjustable timely forecast exerted oneself of unit, its result of study is conducive to power scheduling operations staff to grasp the whole province's unit generation in time
Capacity variation situation, such that it is able to efficiently be assessed to the whole province's unit generation capacity variation situation, final power scheduling fortune
Administrative staff can lift scheduling by the whole province's unit generation capacity variation situation and control electrical network ability, most optimum distribution of resources energy
Power, depth Risk-recovery ability, science decision managerial ability, realize the science organization of power generation, accurately commander, prediction are instructed
Coordinate it is ensured that power grid security, economy, high-quality are run with efficient.
Protection scope of the present invention includes but is not limited to embodiment of above, and protection scope of the present invention is with claims
It is defined, any replacement that those skilled in the art that this technology is made is readily apparent that, deformation, improvement each fall within the present invention's
Protection domain.
Claims (6)
1. the coal unit maximum generation load data processing method based on ature of coal moisture content is it is characterised in that comprise the following steps:
(1) coal pulverizer is entered with coal moisture content and carry out assay, determine ature of coal moisture content；
(2) determine flowing resistance under the EIAJ of EIAJ and coal pulverizer under the benchmark moisture of coal pulverizer；
(3) exerted oneself by maximum grinding that EIAJ under the benchmark moisture of ature of coal moisture content and coal pulverizer determines coal pulverizer；
(4) flowing resistance under differential pressure and coal pulverizer EIAJ is imported and exported by coal pulverizer and determine that the maximum of coal pulverizer dries out
Power；
(5) select coal pulverizer maximum grind exert oneself and the maximum drying capacity of coal pulverizer in little person as coal pulverizer maximum
Exert oneself；
(6) collect the EIAJ of all coal pulverizers；
(7) unit maximum generation load is determined by the EIAJ of unit equivalent load coal-supplying amount and all coal pulverizers.
2. the coal unit maximum generation load data processing method based on ature of coal moisture content according to claim 1, it is special
Levy and be: described step (3) includes:
Exerted oneself by maximum grinding that EIAJ under the benchmark moisture of ature of coal moisture content and coal pulverizer determines coal pulverizer, coal pulverizer
Maximum grinding is exerted oneself as: b1=b0* [1+(10-m) * 0.0114], and wherein b1 is that maximum grinding of coal pulverizer is exerted oneself, and b0 is coal-grinding
EIAJ under the benchmark moisture of machine, m is ature of coal moisture content.
3. the coal unit maximum generation load data processing method based on ature of coal moisture content according to claim 2, it is special
Levy and be: described step (4) includes:
Measurement coal pulverizer import wind pressure and coal pulverizer go out one's intention as revealed in what one says powder pressure, determine that differential pressure: △ p=p1-p2 imported and exported by coal pulverizer,
Wherein △ p imports and exports differential pressure for coal pulverizer, and p1 is actual measurement coal pulverizer import wind pressure, and p2 is that actual measurement coal pulverizer goes out one's intention as revealed in what one says powder pressure
Power；
The maximum drying capacity that flowing resistance under differential pressure and coal pulverizer EIAJ determines coal pulverizer, mill are imported and exported by coal pulverizer
The maximum drying capacity of coal machine is: b2=b* (△ pm/ △ p)0.5, wherein b2 is the maximum drying capacity of coal pulverizer, and b is currently real
Survey pulverizer capacity, △ pm is flowing resistance under the EIAJ of coal pulverizer.
4. the coal unit maximum generation load data processing method based on ature of coal moisture content according to claim 3, it is special
Levy and be: described step (5) includes:
Coal pulverizer maximum is selected to grind the little person exerting oneself in the maximum drying capacity with coal pulverizer as the EIAJ of coal pulverizer, mill
The EIAJ of coal machine is bmax=min (b1, b2), and wherein bmax is the EIAJ of coal pulverizer, and b1 is that the maximum of coal pulverizer is ground
Grind power, b2 is the maximum drying capacity of coal pulverizer.
5. the coal unit maximum generation load data processing method based on ature of coal moisture content according to claim 4, it is special
Levy and be: described step (6) includes:
Collect the EIAJ of all coal pulverizers, the EIAJ sum of all coal pulverizers is: btotal=∑ bmax, wherein btotal
For the EIAJ sum of all coal pulverizers, bmax is the EIAJ of each coal pulverizer.
6. the coal unit maximum generation load data processing method based on ature of coal moisture content according to claim 5, it is special
Levy and be: described step (7) includes:
The measurement actual coal-supplying amount of unit and the generator power of unit, determine unit equivalent load coal-supplying amount: r=r1/p, wherein r
For unit equivalent load coal-supplying amount, r1 is the actual coal-supplying amount of unit, and p is the generator power of unit；
Unit maximum generation load is determined by unit equivalent load coal-supplying amount and all coal pulverizer EIAJs, unit is maximum to be sent out
Electric load is pmax=btotal/ r, wherein pmax are unit maximum generation load, btotalEIAJ for all coal pulverizers
Sum.
Priority Applications (1)
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| CN103115370A (en) * | 2012-11-14 | 2013-05-22 | 辽宁省电力有限公司电力科学研究院 | Processing method for improving drying output of brown coal boiler |
| CN103234327A (en) * | 2013-04-22 | 2013-08-07 | 纪宏舜 | Brown coal drying method for bituminous coal boiler fully burning brown coal in thermal power plant |
| CN103345213A (en) * | 2013-06-09 | 2013-10-09 | 华电电力科学研究院 | Device and method for fire coal management and combustion strategy optimization in variable coal quality conditions of coal-fired thermal power generating unit |
| CN105138855A (en) * | 2015-09-21 | 2015-12-09 | 华北电力科学研究院有限责任公司 | Method and device for calculating influences of coal quality deviation on coal-fired generator set coal consumption |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103115370A (en) * | 2012-11-14 | 2013-05-22 | 辽宁省电力有限公司电力科学研究院 | Processing method for improving drying output of brown coal boiler |
| CN103234327A (en) * | 2013-04-22 | 2013-08-07 | 纪宏舜 | Brown coal drying method for bituminous coal boiler fully burning brown coal in thermal power plant |
| CN103345213A (en) * | 2013-06-09 | 2013-10-09 | 华电电力科学研究院 | Device and method for fire coal management and combustion strategy optimization in variable coal quality conditions of coal-fired thermal power generating unit |
| CN105138855A (en) * | 2015-09-21 | 2015-12-09 | 华北电力科学研究院有限责任公司 | Method and device for calculating influences of coal quality deviation on coal-fired generator set coal consumption |
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