CN106405416B - A kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status - Google Patents
A kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status Download PDFInfo
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- CN106405416B CN106405416B CN201610753565.6A CN201610753565A CN106405416B CN 106405416 B CN106405416 B CN 106405416B CN 201610753565 A CN201610753565 A CN 201610753565A CN 106405416 B CN106405416 B CN 106405416B
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- 239000003245 coal Substances 0.000 title claims abstract description 128
- 238000004458 analytical method Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000013461 design Methods 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 15
- 238000004364 calculation method Methods 0.000 claims description 9
- 230000005662 electromechanics Effects 0.000 claims description 2
- 238000005457 optimization Methods 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 description 6
- 240000002853 Nelumbo nucifera Species 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
Abstract
The invention discloses a kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status, comprise the following steps：1）To all some coal pulverizers to put into operation, the real time execution Monitoring Data of every coal pulverizer of acquisition and its unit；2）According to constraints, every coal pulverizer allowance is calculated；3）Collect all every coal pulverizer allowances to put into operation, obtaining unit coal-supplying amount can increments；4）With reference to current operating data and current coal, the adjustable tolerance of unit generation load is calculated.Unit adjustable output on-line analysis provided by the invention based on the identification of ature of coal fluctuation status, based on coal pulverizer real time execution Monitoring Data, realize the timely forecast of coal pulverizer allowance and the adjustable output of unit, be advantageous to power scheduling operations staff and grasp unit generation capacity variation situation, and optimization power scheduling load curtailment strategy in time.
Description
Technical field
The present invention relates to a kind of unit output analysis method, more particularly to a kind of machine based on the identification of ature of coal fluctuation status
Adjustable output on-line analysis is organized, belongs to electric power unit control technology field.
Background technology
Recent year electricity needs is vigorous, electric coal consumption dosage sustainable growth, as the thermal power plant for consuming coal rich and influential family
Electricity coal supply also be becoming tight by day.Because the equilibrium of supply and demand of electric coal resource is destroyed, promote electricity power enterprise's electricity coal supply increasingly more
Memberization, electric ature of coal amount fluctuating range is caused to increase, most of power plant use coal and differ larger with boiler design coal, cause pot
Furnace operating state off-design value, so as to which the security and economy to boiler combustion bring a series of detrimental effects, draw
The equipment deficiency of hair also showed increased.Mainly influence substantially in following several respects：(1) boiler output declines, and unit can not completely be sent out；
(2) boiler efficiency reduces, gross coal consumption rate increase；(3) coal is changeable, ature of coal deterioration, makes the combustion-supporting oil mass increase of power plant；(4) burner hearth
Slagging, heating surface overtemperature；(5) fuel cost and cost of electricity-generating increase.
At present, electricity power enterprise is relied on voluntarily to report substantially for coal unit ature of coal state, electric dispatching department, Wu Fashi
When accurately understand its operation conditions.Therefore, need badly and realized using information technology to generating set ature of coal state development science, reality
When, effectively assess, and then quantify to the influence degree of the adjustable output of unit.
The content of the invention
It is a primary object of the present invention to overcome deficiency of the prior art, there is provided one kind is known based on ature of coal fluctuation status
Other adjustable output on-line analysis of unit, based on coal pulverizer real time execution Monitoring Data, realizes coal pulverizer allowance and unit
The timely forecast of adjustable output, be advantageous to power scheduling operations staff and grasp unit generation capacity variation situation, and optimization in time
Power scheduling load curtailment strategy.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status, comprises the following steps：
1) to all some coal pulverizers to put into operation, the real time execution Monitoring Data of every coal pulverizer and its unit is obtained；
2) according to constraints, every coal pulverizer allowance is calculated；
3) all every coal pulverizer allowances to put into operation are collected, obtaining unit coal-supplying amount can increments；
4) current operating data and current coal are combined, calculates the adjustable tolerance of unit generation load.
The present invention is further arranged to：The real time execution Monitoring Data includes unit current loads coal-supplying amount, coal pulverizer
Current coal-supplying amount, coal pulverizer electric current and coal pulverizer go out one's intention as revealed in what one says powder temperature.
The present invention is further arranged to：The constraints is unit current loads coal-supplying amount ＜ design conditions current loads
Coal-supplying amount, coal pulverizer electric current ＜ rated current and coal pulverizer go out one's intention as revealed in what one says powder temperature >=go out one's intention as revealed in what one says powder temperature lower bound alarming value.
The present invention is further arranged to：The calculation expression of every coal pulverizer allowance is coal pulverizer allowance=coal-grinding
Machine designs the current coal-supplying amount of coal-supplying amount-coal pulverizer.
The present invention is further arranged to：The current operating data is the equivalent load coal-supplying amount number under current coal situation
According to the current coal is to carry out qualitative assessment acquisition according to equivalent load coal-supplying amount.
The present invention is further arranged to：The calculation expression of the unit current loads coal-supplying amount is unit equivalent load
The current total current generation load of coal-supplying amount/unit of coal-supplying amount=unit.
The present invention is further arranged to：The adjustable tolerance of the unit generation load is unit output allowance,
Its calculation expression is, unit output allowance=coal pulverizer allowance/specific load coal-supplying amount=coal pulverizer allowance/(unit is current
The current generation load of total coal-supplying amount/unit).
Compared with prior art, the invention has the advantages that：
Based on coal pulverizer real time execution Monitoring Data, the timely forecast of coal pulverizer allowance and the adjustable output of unit is realized, is had
Body can combine equivalent load coal-supplying amount, ensureing that coal pulverizer electric current, coal pulverizer go out one's intention as revealed in what one says powder temperature not under overrun condition, assessing mill
Coal machine allowance, and then the adjustable section of unit generation load is assessed, not only contribute to power scheduling operations staff and grasp in time
Unit generation capacity variation situation, and optimization power scheduling load curtailment strategy；And scheduling can be lifted and control power network ability, money
Source optimization allocative abilities, depth Risk-recovery ability, science decision managerial ability, realize the science organization, accurate of power generation
Commander, prediction instruct and efficiently coordinated, it is ensured that power grid security, economy, high-quality operation.
The above is only the general introduction of technical solution of the present invention, in order to be better understood upon the technological means of the present invention, under
With reference to accompanying drawing, the invention will be further described in face.
Brief description of the drawings
Fig. 1 is the flow chart of the embodiment of the present invention.
Embodiment
With reference to Figure of description, the present invention is further illustrated.
The present invention provides a kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status, including following
Step：
1) to all some coal pulverizers to put into operation, the real time execution Monitoring Data of every coal pulverizer and its unit is obtained；
Influence of the ature of coal to unit output is mainly reflected in following three aspect：
(1) raw coal grindability is poor, causes the actual output of coal pulverizer lower than design nominal output, unit coal-supplying amount, boiler
Quantity of heat production, unit actual power ability are less than design load；
(2) raw coal moisture is high, in the case where ensureing that coal pulverizer goes out one's intention as revealed in what one says powder temperature, is limited by mill coal pulverizer system and does
Dry ability, coal-grinding amount are limited, and then cause the generating capacity of unit to be less than design load；
(3) raw coal calorific value is low, although the actual output of coal pulverizer can reach design rating, the coal amount for entering burner hearth is corresponding
Quantity of heat production it is smaller than design load, the generating capacity of unit is less than design load.
Performance is rung from above-mentioned tripartite's face as can be seen that limitation of the ature of coal to unit output is embodied in coal-grinding electromechanics first
Stream, coal pulverizer go out one's intention as revealed in what one says powder temperature, the aspect of coal-supplying amount three, so the real time execution Monitoring Data of the present invention is currently born including unit
The current coal-supplying amount of lotus coal-supplying amount, coal pulverizer, coal pulverizer electric current and coal pulverizer go out one's intention as revealed in what one says powder temperature.
Wherein, the calculation expression of unit current loads coal-supplying amount is that unit equivalent load coal-supplying amount=unit is currently total
The current generation load of coal-supplying amount/unit, it reflect be current coal coal-supplying amount and generation load between linear mathematics close
System.
2) according to constraints, every coal pulverizer allowance is calculated；
If there is any one following situation, coal pulverizer can not coal amount, i.e. coal pulverizer allowance is 0：Coal pulverizer electric current
>=coal pulverizer rated current, coal pulverizer go out one's intention as revealed in what one says powder temperature ＜ and go out one's intention as revealed in what one says powder temperature lower bound alarming value, the current coal-supplying amount of coal pulverizer
>=coal pulverizer designs coal-supplying amount.
Current equivalent load coal-supplying amount is less than the unit of design load, represents the current coal quantity of unit than design coal also
Good, unit output can reach rated load under design coal, and adjustable EIAJ is equal to the specified work(of unit under current coal
Rate.
As shown in figure 1, the adoptable constraints of the present invention is currently born for unit current loads coal-supplying amount ＜ design conditions
Lotus coal-supplying amount, coal pulverizer electric current ＜ rated current and coal pulverizer go out one's intention as revealed in what one says powder temperature >=go out one's intention as revealed in what one says powder temperature lower bound alarming value.
Do not transfinite in coal pulverizer electric current, coal pulverizer goes out one's intention as revealed in what one says powder temperature not less than in the case of alarming value, every coal pulverizer
The calculation expression of allowance is the coal pulverizer allowance=coal pulverizer design current coal-supplying amount of coal-supplying amount-coal pulverizer.
3) all every coal pulverizer allowances to put into operation are collected, obtaining unit coal-supplying amount can increments.
4) current operating data and current coal are combined, calculates the adjustable tolerance of unit generation load；
Current operating data is the equivalent load coal-supplying amount data under current coal situation, and current coal is born according to equivalent
Lotus coal-supplying amount carries out qualitative assessment acquisition；The adjustable tolerance of unit generation load is unit output allowance, and it is calculated
Expression formula is, unit output allowance=coal pulverizer allowance/specific load coal-supplying amount=coal pulverizer allowance/(unit currently always gives coal
The current generation load of amount/unit).
Implemented by taking the unit that certain 660MW grade configures 6 coal pulverizers as an example, the EIAJ of every coal pulverizer is
50t/h, its ature of coal situation is assessed in real time, carry out adjustable output interval analysis.
The coal pulverizer online monitoring data of the unit at a time is as shown in table 1 below：
Table 1
By to coal pulverizer allowance, that result of calculation is calculated in equivalent load coal-supplying amount is as shown in table 2 below：
Table 2
The innovative point of the present invention is, based on coal pulverizer real time execution Monitoring Data, realizes that coal pulverizer allowance and unit can
The timely forecast of power is recalled, is advantageous to power scheduling operations staff and grasps unit generation capacity variation situation, and optimization electricity in time
Power dispatches load curtailment strategy.
General principle, the main features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (7)
1. a kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status, it is characterised in that including following
Step：
1）To all some coal pulverizers to put into operation, the real time execution Monitoring Data of every coal pulverizer of acquisition and its unit；
2）According to constraints, every coal pulverizer allowance is calculated；
3）Collect all every coal pulverizer allowances to put into operation, obtaining unit coal-supplying amount can increments；
4）With reference to current operating data and current coal, the adjustable tolerance of unit generation load is calculated.
2. a kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status according to claim 1,
It is characterized in that：The real time execution Monitoring Data includes unit current loads coal-supplying amount, the current coal-supplying amount of coal pulverizer, coal pulverizer
Electric current and coal pulverizer go out one's intention as revealed in what one says powder temperature.
3. a kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status according to claim 2,
It is characterized in that：The constraints is unit current loads coal-supplying amount ＜ design conditions current loads coal-supplying amount, coal-grinding electromechanics
Stream ＜ rated current and coal pulverizer go out one's intention as revealed in what one says powder temperature >=go out one's intention as revealed in what one says powder temperature lower bound alarming value.
4. a kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status according to claim 3,
It is characterized in that：The calculation expression of every coal pulverizer allowance is coal pulverizer allowance=coal pulverizer design coal-supplying amount-coal-grinding
The current coal-supplying amount of machine.
5. a kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status according to claim 1,
It is characterized in that：The current operating data be current coal situation under equivalent load coal-supplying amount data, the current coal
It is that qualitative assessment acquisition is carried out according to equivalent load coal-supplying amount.
6. a kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status according to claim 2,
It is characterized in that：The calculation expression of the unit current loads coal-supplying amount is that unit equivalent load coal-supplying amount=unit is currently total
The current generation load of coal-supplying amount/unit.
7. a kind of adjustable output on-line analysis of unit based on the identification of ature of coal fluctuation status according to claim 3,
It is characterized in that：The adjustable tolerance of the unit generation load is unit output allowance, and its calculation expression is machine
Group output allowance=coal pulverizer allowance/specific load coal-supplying amount=coal pulverizer allowance/（Unit currently currently send out by total coal-supplying amount/unit
Electric load）.
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