CN106339821B - Coal unit maximum generation load data processing method based on coal quality moisture content - Google Patents
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Abstract
The invention discloses the coal unit maximum generation load data processing methods based on coal quality moisture content, include the following steps：Assay is carried out into coal moisture content to coal pulverizer；Inquire under the benchmark moisture of coal pulverizer ventilation resistance under maximum output and the maximum output of coal pulverizer；Determine that the maximum grinding of coal pulverizer is contributed by maximum output under the benchmark moisture of coal quality moisture content and coal pulverizer；Ventilation resistance under differential pressure and coal pulverizer maximum output, which is imported and exported, by coal pulverizer determines coal pulverizer maximum drying capacity；The grinding of coal pulverizer maximum is selected to contribute with the small person in coal pulverizer maximum drying capacity as coal pulverizer maximum output；Summarize all coal pulverizer maximum output；Unit maximum generation load is determined by unit equivalent load coal-supplying amount and all coal pulverizer maximum output；The present invention realizes the timely forecast of coal pulverizer maximum output and the adjustable output of unit, is conducive to power scheduling operations staff and grasps the whole province's unit generation capacity variation situation in time, it is ensured that power grid security, economy, high-quality operation.
Description
Technical field
The present invention relates to technical field of power systems, and in particular to a kind of coal unit maximum generation based on coal quality moisture content
Load data processing method.
Background technology
Recent year electricity needs is vigorous, electric coal consumption dosage sustainable growth, the thermal power plant as consumption coal rich and influential family
Electricity coal supply also be becoming tight by day, and electricity coal supply switchs to seller's market from past buyer's market.Since the supply and demand of electric coal resource is flat
Weighing apparatus is destroyed, and electricity power enterprise's electricity coal supply is promoted to become more diversified, and electric coal quality fluctuating range increases, and most of power plant use
Coal differs larger with boiler design coal, causes boiler operatiopn state off-design value, to the safety to boiler combustion
A series of detrimental effects are brought with economy, and the equipment deficiency of initiation also showed increased is main to influence substantially following several
Aspect：（1）Boiler output declines, and unit cannot completely be sent out；（2）Boiler efficiency reduces, and coal consumption for power generation 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 coal quality state, electric dispatching department relies on electricity power enterprise voluntarily to report substantially, Wu Fashi
When accurately understand the whole province's unit generation capacity variation situation, cannot ensure the high-quality operation of power grid security.Therefore, it is necessary to coal burning machine
Group coal quality state is carried out science, is assessed in real time and effectively, and then quantifies the influence degree to the adjustable output of unit.
Invention content
It is a kind of based on coal quality moisture content the technical problem to be solved by the present invention is to provide in view of the above shortcomings of the prior art
Coal unit maximum generation load data processing method, at the coal unit maximum generation load data of coal quality moisture content
Reason method realizes the timely forecast of coal pulverizer maximum output and the adjustable output of unit, and result of study is conducive to power scheduling fortune
Administrative staff grasps the whole province's unit generation capacity variation situation in time, it is ensured that power grid security, economy, high-quality operation.
To realize the above-mentioned technical purpose, the technical solution that the present invention takes is：
Coal unit maximum generation load data processing method based on coal quality moisture content, includes the following steps：
（1）Assay is carried out into coal moisture content to coal pulverizer, determines coal quality moisture content；
（2）Determine under the benchmark moisture of coal pulverizer ventilation resistance under maximum output and the maximum output of coal pulverizer；
（3）Determine that the maximum grinding of coal pulverizer is contributed by maximum output under the benchmark moisture of coal quality moisture content and coal pulverizer；
（4）Ventilation resistance under differential pressure and coal pulverizer maximum output, which is imported and exported, by coal pulverizer determines that the maximum of coal pulverizer is dry
It contributes；
（5）The maximum grinding of coal pulverizer is selected to contribute with the small person in the maximum drying capacity of coal pulverizer as coal pulverizer
Maximum output；
（6）Summarize the maximum output of all coal pulverizers；
（7）Unit maximum generation load is determined by the maximum output of unit equivalent load coal-supplying amount and all coal pulverizers.
As further improved technical scheme of the present invention, the step（3）Including：
Determine that the maximum grinding of coal pulverizer is contributed by maximum output under the benchmark moisture of coal quality moisture content and coal pulverizer, coal-grinding
The maximum grinding of machine, which is contributed, is：B1=B0*[1+（10-M）* 0.0114], wherein B1 is that the maximum grinding of coal pulverizer is contributed, and B0 is
Maximum output under the benchmark moisture of coal pulverizer, M are coal quality moisture content.
As further improved technical scheme of the present invention, the step（4）Including：
It measures coal pulverizer import wind pressure and coal pulverizer goes out one's intention as revealed in what one says powder pressure, determine that coal pulverizer imports and exports differential pressure：△P=P1-
P2, wherein △ P are that coal pulverizer imports and exports differential pressure, 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；
Ventilation resistance under differential pressure and coal pulverizer maximum output, which is imported and exported, by coal pulverizer determines that the maximum of coal pulverizer dries out
The maximum drying capacity of power, coal pulverizer is：B2=B*(△Pm/△P)0.5, wherein B2 is the maximum drying capacity of coal pulverizer, and B is
Current actual measurement pulverizer capacity, △ Pm are ventilation resistance under the maximum output of coal pulverizer.
As further improved technical scheme of the present invention, the step（5）Including：
The grinding of coal pulverizer maximum is selected to contribute to go out as the maximum of coal pulverizer with the small person in coal pulverizer maximum drying capacity
The maximum output of power, coal pulverizer is Bmax=min (B1, B2), and wherein Bmax is the maximum output of coal pulverizer, and B1 is coal pulverizer
Maximum grinding is contributed, and B2 is the maximum drying capacity of coal pulverizer.
As further improved technical scheme of the present invention, the step（6）Including：
Summarize the maximum output of all coal pulverizers, the sum of the maximum output of all coal pulverizers is：BTOTAL=∑ Bmax, wherein
BTOTALFor the sum of the maximum output of all coal pulverizers, Bmax is the maximum output of each coal pulverizer.
As further improved technical scheme of the present invention, the step（7）Including：
The generator power of measuring unit practical coal-supplying amount and unit determines unit equivalent load coal-supplying amount：R=R1/P,
Middle R is unit equivalent load coal-supplying amount, and R1 is the practical 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 maximum output, and unit is most
Big generation load is Pmax=BTOTAL/ R, wherein Pmax are unit maximum generation load, BTOTALFor the maximum of all coal pulverizers
The sum of contribute.
The present invention is based on the data of coal pulverizer real time execution actual measurement, negative by coal pulverizer maximum output and unit maximum generation
Lotus realizes that the timely forecast of the adjustable output of unit, result of study are conducive to power scheduling operations staff and grasp the whole province's unit in time
Generating capacity situation of change, so as to efficiently be assessed the whole province's unit generation capacity variation situation, final electric power tune
Degree operations staff can control power grid ability, most optimum distribution of resources by the whole province's unit generation capacity variation situation to promote scheduling
Ability, depth Risk-recovery ability, science decision managerial ability realize that the science organization of power generation, accurate commander, looking forward to the prospect refers to
It leads and efficiently coordinates, it is ensured that power grid security, economy, high-quality operation.
Specific implementation mode
The specific implementation mode of the present invention is further illustrated below：
Coal unit maximum generation load data processing method based on coal quality moisture content, includes the following steps：
（1）Assay is carried out into coal moisture content to coal pulverizer, determines coal quality moisture content；
（2）According to the model of coal pulverizer, inquiry data is so that it is determined that maximum output and coal-grinding under the benchmark moisture of coal pulverizer
Ventilation resistance under the maximum output of machine；
（3）Determine that the maximum grinding of coal pulverizer is contributed by maximum output under the benchmark moisture of coal quality moisture content and coal pulverizer；
（4）Ventilation resistance under differential pressure and coal pulverizer maximum output, which is imported and exported, by coal pulverizer determines that the maximum of coal pulverizer is dry
It contributes；
（5）The maximum grinding of coal pulverizer is selected to contribute with the small person in the maximum drying capacity of coal pulverizer as coal pulverizer
Maximum output；
（6）Summarize the maximum output of all coal pulverizers；
（7）Unit maximum generation load is determined by the maximum output of unit equivalent load coal-supplying amount and all coal pulverizers.
Further, the step（3）Including：It is true by maximum output under the benchmark moisture of coal quality moisture content and coal pulverizer
The maximum grinding for determining coal pulverizer is contributed, and the maximum grinding of coal pulverizer, which is contributed, is：B1=B0*[1+（10-M）* 0.0114], wherein B1
It contributes for the maximum grinding of coal pulverizer, B0 is maximum output under the benchmark moisture of coal pulverizer, and M is coal quality moisture content.
Further, the step（4）Including：It measures coal pulverizer import wind pressure and coal pulverizer goes out one's intention as revealed in what one says powder pressure,
Determine that coal pulverizer imports and exports differential pressure：△ P=P1-P2, wherein △ P are that coal pulverizer imports and exports differential pressure, and P1 is to survey coal pulverizer into one's intention as revealed in what one says
Pressure, P2 are that actual measurement coal pulverizer goes out one's intention as revealed in what one says powder pressure；Resistance of divulging information under differential pressure and coal pulverizer maximum output is imported and exported by coal pulverizer
Power determines that the maximum drying capacity of coal pulverizer, the maximum drying capacity of coal pulverizer are：B2=B*(△Pm/△P)0.5, wherein B2 is
The maximum drying capacity of coal pulverizer, B are current actual measurement pulverizer capacity, and △ Pm are ventilation resistance under the maximum output of coal pulverizer.
Further, the step（5）Including：The grinding of coal pulverizer maximum is selected to contribute and coal pulverizer maximum drying capacity
In maximum output of the small person as coal pulverizer, the maximum output of coal pulverizer is Bmax=min (B1, B2), and wherein Bmax is coal-grinding
The maximum output of machine, B1 are that the maximum grinding of coal pulverizer is contributed, and B2 is the maximum drying capacity of coal pulverizer.
Further, the step（6）Including：Summarize the maximum output of all coal pulverizers, the maximum of all coal pulverizers
Contribute the sum of be：BTOTAL=∑ Bmax, wherein BTOTALFor the sum of the maximum output of all coal pulverizers, Bmax is each coal pulverizer
Maximum output.
Further, the step（7）Including：The generator power of measuring unit practical coal-supplying amount and unit determines
Unit equivalent load coal-supplying amount：R=R1/P, wherein R are unit equivalent load coal-supplying amount, and R1 is the practical coal-supplying amount of unit, and P is machine
The generator power of group；Determine that unit maximum generation is negative by unit equivalent load coal-supplying amount and all coal pulverizer maximum output
Lotus, unit maximum generation load are Pmax=BTOTAL/ R, wherein Pmax are unit maximum generation load, BTOTALFor all coal-grindings
The sum of maximum output of machine.
Specific introduce is made to the present invention below in conjunction with above-mentioned implementation process：
Certain 1000MW grade configures 6 model HP1163 medium-speed pulverizers, maximum under the benchmark moisture of every coal pulverizer
It is 94t/h to contribute, and ventilation resistance is 4600Pa under maximum output, is assessed in real time its coal quality situation, carries out adjustable output
Interval analysis is as follows：
The coal pulverizer online monitoring data of the 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 pressures | -0.12142 | kPa |
| Coal pulverizer B import wind pressures | 5.576667 | kPa |
| Coal pulverizer C import wind pressures | 6.3876 | kPa |
| Coal pulverizer D import wind pressures | 6.48 | kPa |
| Coal pulverizer E import wind pressures | 6.539616 | kPa |
| Coal pulverizer F import wind pressures | 6.598538 | kPa |
| Feeder A coal-supplying amounts | -0.05 | t/h |
| Feeder B coal-supplying amounts | 69.19967 | t/h |
| Feeder C coal-supplying amounts | 68.92256 | t/h |
| Feeder D coal-supplying amounts | 63.963 | t/h |
| Feeder E coal-supplying amounts | 64.47578 | t/h |
| Feeder F coal-supplying amounts | 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 temperatures | 69.03661 | ℃ |
| Coal pulverizer B import air temperatures | 211.9934 | ℃ |
| Coal pulverizer C import air temperatures | 272.1214 | ℃ |
| Coal pulverizer D import air temperatures | 200.977 | ℃ |
| Coal pulverizer E import air temperatures | 276.3871 | ℃ |
| Coal pulverizer F import air temperatures | 250.4344 | ℃ |
| Coal pulverizer A coal quality moisture content | 0 | % |
| Coal pulverizer B coal quality moisture content | 12.34 | % |
| Coal pulverizer C coal quality moisture content | 18.21 | % |
| Coal pulverizer D coal quality moisture content | 13.40 | % |
| Coal pulverizer E coal quality moisture content | 18.72 | % |
| Coal pulverizer F coal quality moisture content | 18.85 | % |
Wherein the practical coal-supplying amount of unit is feeder A coal-supplying amounts, feeder B coal-supplying amounts, feeder C coal-supplying amounts, feeder D
The summation of coal-supplying amount, feeder E coal-supplying amounts and feeder F coal-supplying amounts；Current actual measurement coal pulverizer A contributes and feeder A coal-supplying amounts
Equal, current coal pulverizer B outputs of surveying are equal with feeder B coal-supplying amounts, and the current coal pulverizer C that surveys contributes with feeder C to coal
Measure it is equal, it is current survey coal pulverizer D contribute it is equal with feeder D coal-supplying amounts, it is current survey coal pulverizer E and contribute is given with feeder E
Coal amount is equal, and current actual measurement coal pulverizer F contributes equal with feeder F coal-supplying amounts.
By upper table coal pulverizer A coal-supplying amounts for -0.05 it is found that coal pulverizer A does not work, therefore coal pulverizer A need not be utilized
Above-mentioned formula calculate the maximum drying capacity of coal pulverizer A and maximum grinding is contributed, the maximum drying capacity of coal pulverizer A and most
It is 0 that big grinding, which is contributed,；Remaining coal pulverizer calculates the maximum drying capacity of coal pulverizer using above-mentioned formula, maximum is ground
Power and equivalent load coal-supplying amount, it is as follows to be calculated result：
| It is detailed | Unit | Result of calculation |
| The grinding of coal pulverizer A maximums is contributed | t/h | 0 |
| Coal pulverizer A maximum drying capacities | t/h | 0 |
| Coal pulverizer A maximum output | t/h | 0 |
| The grinding of coal pulverizer B maximums is contributed | t/h | 91.49 |
| Coal pulverizer B maximum drying capacities | t/h | 79.61 |
| Coal pulverizer B maximum output | t/h | 79.61 |
| The grinding of coal pulverizer C maximums is contributed | t/h | 85.20 |
| Coal pulverizer C maximum drying capacities | t/h | 78.49 |
| Coal pulverizer C maximum output | t/h | 78.49 |
| The grinding of coal pulverizer D maximums is contributed | t/h | 90.36 |
| Coal pulverizer D maximum drying capacities | t/h | 73.28 |
| Coal pulverizer D maximum output | t/h | 73.28 |
| The grinding of coal pulverizer E maximums is contributed | t/h | 84.66 |
| Coal pulverizer E maximum drying capacities | t/h | 65.97 |
| Coal pulverizer E maximum output | t/h | 65.97 |
| The grinding of coal pulverizer F maximums is contributed | t/h | 84.52 |
| Coal pulverizer F maximum drying capacities | t/h | 85.85 |
| Coal pulverizer F maximum output | t/h | 84.52 |
| The maximum output of all coal pulverizers | t/h | 381.87 |
| Equivalent load coal-supplying amount | t/MWh | 0.495 |
| Maximum generation load | MW | 771.5 |
The present invention is based on the data of coal pulverizer real time execution actual measurement, negative by coal pulverizer maximum output and unit maximum generation
Lotus realizes that the timely forecast of the adjustable output of unit, result of study are conducive to power scheduling operations staff and grasp the whole province's unit in time
Generating capacity situation of change, so as to efficiently be assessed the whole province's unit generation capacity variation situation, final electric power tune
Degree operations staff can control power grid ability, most optimum distribution of resources by the whole province's unit generation capacity variation situation to promote scheduling
Ability, depth Risk-recovery ability, science decision managerial ability realize that the science organization of power generation, accurate commander, looking forward to the prospect refers to
It leads and efficiently coordinates, it is ensured that power grid security, economy, high-quality operation.
Protection scope of the present invention includes but not limited to embodiment of above, and protection scope of the present invention is with claims
Subject to, any replacement being readily apparent that those skilled in the art that this technology is made, deformation, improvement each fall within the present invention's
Protection domain.
Claims (4)
1. the coal unit maximum generation load data processing method based on coal quality moisture content, which is characterized in that include the following steps：
(1) assay is carried out into coal moisture content to coal pulverizer, determines coal quality moisture content；
(2) ventilation resistance under maximum output and the maximum output of coal pulverizer is determined under the benchmark moisture of coal pulverizer；
(3) determine that the maximum grinding of coal pulverizer is contributed by maximum output under the benchmark moisture of coal quality moisture content and coal pulverizer；
(4) ventilation resistance under differential pressure and coal pulverizer maximum output is imported and exported by coal pulverizer and determines that the maximum of coal pulverizer dries out
Power；
(5) maximum for selecting the maximum grinding of coal pulverizer to contribute with the small person in the maximum drying capacity of coal pulverizer as coal pulverizer
It contributes；
(6) summarize the maximum output of all coal pulverizers；
(7) unit maximum generation load is determined by the maximum output of unit equivalent load coal-supplying amount and all coal pulverizers；
The step (3) includes：
Determine that the maximum grinding of coal pulverizer is contributed by maximum output under the benchmark moisture of coal quality moisture content and coal pulverizer, coal pulverizer
Maximum grinding, which is contributed, is：B1=B0* [1+ (10-M) * 0.0114], wherein B1 are that the maximum grinding of coal pulverizer is contributed, and B0 is coal-grinding
Maximum output under the benchmark moisture of machine, M are coal quality moisture content；
The step (4) includes：
It measures coal pulverizer import wind pressure and coal pulverizer goes out one's intention as revealed in what one says powder pressure, determine that coal pulverizer imports and exports differential pressure：△ P=P1-P2,
Wherein △ P are that coal pulverizer imports and exports differential pressure, 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 ventilation resistance under differential pressure and coal pulverizer maximum output 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 current
Pulverizer capacity is surveyed, △ Pm are ventilation resistance under the maximum output of coal pulverizer.
2. the coal unit maximum generation load data processing method according to claim 1 based on coal quality moisture content, special
Sign is：The step (5) includes：
The maximum output for selecting the grinding of coal pulverizer maximum to contribute with the small person in coal pulverizer maximum drying capacity as coal pulverizer, mill
The maximum output of coal machine is Bmax=min (B1, B2), and wherein Bmax is the maximum output of coal pulverizer, and B1 is the maximum of coal pulverizer
Grinding is contributed, and B2 is the maximum drying capacity of coal pulverizer.
3. the coal unit maximum generation load data processing method according to claim 2 based on coal quality moisture content, special
Sign is：The step (6) includes：
Summarize the maximum output of all coal pulverizers, the sum of the maximum output of all coal pulverizers is：BTOTAL=∑ Bmax, wherein BTOTAL
For the sum of the maximum output of all coal pulverizers, Bmax is the maximum output of each coal pulverizer.
4. the coal unit maximum generation load data processing method according to claim 3 based on coal quality moisture content, special
Sign is：The step (7) includes：
The generator power of measuring unit practical coal-supplying amount and unit determines unit equivalent load coal-supplying amount：R=R1/P, wherein R
For unit equivalent load coal-supplying amount, R1 is the practical coal-supplying amount of unit, and P is the generator power of unit；
Unit maximum generation load, unit maximum hair are determined by unit equivalent load coal-supplying amount and all coal pulverizer maximum output
Electric load is Pmax=BTOTAL/ R, wherein Pmax are unit maximum generation load, BTOTALFor all coal pulverizers maximum output it
With.
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| CN201610804049.1A CN106339821B (en) | 2016-09-06 | 2016-09-06 | Coal unit maximum generation load data processing method based on coal quality moisture content |
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| CN201610804049.1A CN106339821B (en) | 2016-09-06 | 2016-09-06 | Coal unit maximum generation load data processing method based on coal quality moisture content |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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