CN107228380A - The method and system for determining boiler heating parameters are instructed by generated output - Google Patents
The method and system for determining boiler heating parameters are instructed by generated output Download PDFInfo
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- CN107228380A CN107228380A CN201710357546.6A CN201710357546A CN107228380A CN 107228380 A CN107228380 A CN 107228380A CN 201710357546 A CN201710357546 A CN 201710357546A CN 107228380 A CN107228380 A CN 107228380A
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- generated output
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/14—Differentiation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2241/00—Applications
- F23N2241/10—Generating vapour
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The embodiment of the present invention provides a kind of method and system for being instructed by generated output and determining boiler heating parameters, belongs to power automation control technology field.It is described to instruct the method for determining boiler heating parameters to include by generated output：Obtain generated output requirements and generated output actual value；The generated output requirements and the generated output actual value are compared, to obtain comparative result；And in the case where the comparative result is in setting range, the heating parameters of boiler are determined according to the thermal storage effect of the comparative result and boiler, this method improves generator unit allocation quality, improves control accuracy, improves delay, improves response speed.
Description
Technical field
The present invention relates to power automation control technology field, boiler heating is determined more particularly to by generated output instruction
The method and system of parameter.
Background technology
In existing generation technology, during load-side generated output changes in demand, boiler heat supplying also needs to adjust therewith, to meet work(
The change of rate demand, in practical operation, when the generated output increase in demand of load-side, correspondingly, need to increase the benefit coal of boiler
The coal time is mended in amount and/or extension, to provide the heat for meeting increased generated output, but in practical operation, because of boiler heat storage
The factors such as characteristic, fuel characteristic influence, and power adjusting has delay, has regulation delayed, control accuracy and the degree of accuracy are poor
Defect.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of instructed by generated output and determines the method for boiler heating parameters and be
System, this method improves generator unit allocation quality, improves control accuracy, improves delay, improves response speed.
To achieve these goals, the embodiment of the present invention provides a kind of instructed by generated output and determines boiler heating parameters
Method, this method includes：Obtain generated output requirements and generated output actual value；
The generated output requirements and the generated output actual value are compared, to obtain comparative result；And
In the case where the comparative result is in setting range, boiler is determined according to the thermal storage effect of the comparative result and boiler
Heating parameters.
Optionally, the generated output requirements and the generated output actual value are compared, compare knot to obtain
Fruit includes：The difference of the generated output requirements and the generated output actual value is calculated, and calculates the absolute of the difference
Value.
Optionally, the heating parameters for determining boiler according to the thermal storage effect of the comparative result and boiler include：Will be described
The thermal storage effect function of the corresponding boiler of generated output requirements enters relative to variable time and variable power magnitude
Row differential, with the response time of the heating power that obtains the boiler and the rate of change of heating power.
Optionally, this method also includes：According to the response time of the heating power of the boiler and the heating power
Rate of change determines the benefit coal time of the boiler and mends coal amount.
Optionally, the setting range is 3-8MW/ hours.
On the other hand, the present invention provides a kind of system that determination boiler heating parameters are instructed by generated output, the system bag
Include：Acquisition module, for obtaining the generated output actual value；Processing module, for by the generated output actual value and hair
Electrical power requirements value is compared, to obtain comparative result；And in the case where the comparative result is in setting range, root
The heating parameters of boiler are determined according to the thermal storage effect of the comparative result and boiler.
Optionally, the processing module includes：Deviation computing module, for calculating the generated output requirements and described
The difference of generated output actual value；And absolute value computing module, calculate the exhausted of the difference that the deviation computing module is calculated
To value.
Optionally, the processing module also includes：Time diffusion module, for the generated output requirements are corresponding
The thermal storage effect function of the boiler carries out differential relative to variable time, with the change for the heating power for obtaining the boiler
Speed；And amplitude derivative module, for by the thermal storage effect function phase of the corresponding boiler of the generated output requirements
Differential is carried out for variable power magnitude, with the response time for the heating power for obtaining the boiler.
Optionally, the processing module is further configured to：According to response time of the heating power of the boiler and described
The rate of change of heating power determines the benefit coal time of the boiler and mends coal amount.
Optionally, the setting range is 3-8MW/ hours.
By above-mentioned technical proposal, obtain the generated output requirements and generated output actual value of generating set and compared
Compared with to further determine that the comparative result of generated output requirements and generated output actual value, in comparative result in setting range
In the case of interior, the thermal storage effect of bonded boiler determines the heating parameters of boiler, improves degree of regulation and response speed, improves and adjusts
Hysteresis quality is saved, control quality is improved.
The further feature and advantage of the embodiment of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is that the embodiment of the present invention is further understood for providing, and constitutes a part for specification, with
The embodiment in face is used to explain the embodiment of the present invention together, but does not constitute the limitation to the embodiment of the present invention.Attached
In figure：
Fig. 1 is the method flow diagram that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention；
Fig. 2 is the method flow that determination boiler heating parameters are instructed by generated output of another embodiment of the present invention
Figure；
Fig. 3 is the method flow that determination boiler heating parameters are instructed by generated output of another embodiment of the present invention
Figure；
Fig. 4 is the method flow that determination boiler heating parameters are instructed by generated output of another embodiment of the present invention
Figure；
Fig. 5 is the system architecture signal that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention
Figure；
Fig. 6 is that the system architecture by generated output instruction determination boiler heating parameters of another embodiment of the present invention is shown
It is intended to；
Fig. 7 is that the system architecture by generated output instruction determination boiler heating parameters of another embodiment of the present invention is shown
It is intended to；
Fig. 8 is that the system architecture by generated output instruction determination boiler heating parameters of another embodiment of the present invention is shown
It is intended to；
Fig. 9 is that the system architecture by generated output instruction determination boiler heating parameters of another embodiment of the present invention is shown
It is intended to；
Figure 10 is the method logic fortune that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention
Nomogram；
Figure 11 is to instruct the method for determining boiler heating parameters to adjust by generated output using one embodiment of the present invention
Save power contrast's figure before and after boiler heating.
Embodiment
The embodiment of the embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this
The embodiment of place description is merely to illustrate and explain the present invention embodiment, is not intended to limit the invention embodiment.
Fig. 1 is the method flow diagram that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention.
The method that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention as shown in Figure 1, including：In step
In rapid S110, generated output requirements and generated output actual value are obtained；In the step s 120, by the generated output requirements
It is compared with the generated output actual value, to obtain comparative result；And in step s 130, exist in the comparative result
In the case of in setting range, the heating parameters of boiler are determined according to the thermal storage effect of the comparative result and boiler.
In such scheme, in the step s 120, the generated output requirements and the generated output actual value are carried out
Compare, included with obtaining comparative result：The difference of the generated output requirements and the generated output actual value is calculated, and is counted
Calculate the absolute value of the difference.
In such scheme, obtain the generated output requirements and generated output actual value of generating set and be compared, with
The comparative result of generated output requirements and generated output actual value is further determined that, when comparative result is in setting range, is said
Bright to need to carry out heating regulation, now, the thermal storage effect of bonded boiler determines the heating parameters of boiler, for example, determine the benefit of boiler
Coal amount and benefit coal time, improve response speed, improve degree of regulation and response speed, improve hysteresis quality, improve and control quality.
Fig. 2 is the method flow that determination boiler heating parameters are instructed by generated output of another embodiment of the present invention
Figure.The method that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention as shown in Figure 2, in step
In S130, the heating parameters for determining boiler according to the thermal storage effect of the comparative result and boiler include：By the generated output
The thermal storage effect function of the corresponding boiler of requirements carries out differential relative to variable time and variable power magnitude, to obtain
The response time of the heating power of the boiler and the rate of change of heating power.
I.e. in step S132, comparative result is judged whether in range of set value, in this way, then, will in step S134
The thermal storage effect function of the corresponding boiler of the generated output requirements carries out differential relative to variable time, described to obtain
The response time of the heating power of boiler, and in step S136, by the accumulation of heat of the corresponding boiler of the generated output requirements
Characterisitic function carries out differential relative to variable power magnitude, with the rate of change for the heating power for obtaining the boiler.
It is special according to the accumulation of heat of generated output requirements and boiler when comparative result is in setting range in such scheme
Property determines the heating parameters of boiler, including：By the thermal storage effect function of the corresponding boiler of the generated output requirements
Differential is carried out relative to variable time, come the response time of the heating that determines boiler, i.e. heat time length, and by the hair
The thermal storage effect function that electrical power requirements are worth the corresponding boiler carries out differential relative to variable power magnitude, to determine to add
The rate of change of thermal power, i.e. heating response speed.
In such scheme, the setting range is 3-8MW/ hours.When generated output requirements and generated output actual value
Difference in the range of 3-8MW/ hours when, the heating parameters of boiler are determined according to generated output requirements, to control boiler to enter
The operations such as row heating.
Fig. 3 is the method flow that determination boiler heating parameters are instructed by generated output of another embodiment of the present invention
Figure.The method that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention as shown in Figure 3, is also wrapped
Include：The benefit coal of the boiler is determined according to the response time of the rate of change of the heating power of the boiler and the heating power
Amount and benefit coal time.I.e. in step S142, the benefit coal time of boiler is determined according to the response time of the heating power of boiler, and
In step S144, the benefit coal amount of boiler is determined according to the rate of change of the heating power of boiler.
Fig. 4 is the method flow diagram that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention.
The method that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention as shown in Figure 4, in addition to, mistake
Generated output demand value signal is filtered, i.e., in step 112, judges the generated output requirements obtained whether in opereating specification,
In this way, then the comparison of generated output requirements and generated output actual value is carried out in the step s 120；Such as no, i.e., the hair when acquisition
Electrical power requirements value is smaller, and it may be interference signal without being responded to it；When the generated output requirements of acquisition
Larger, it is likely to be at negative control mode instruction also without responding.
In such scheme, the opereating specification of generated output requirements of boiler heating operation is performed according to different generators
Group and different heating boilers are set according to actual needs.
Fig. 5 is the system architecture signal that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention
Figure.The system that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention as shown in Figure 5, including：
Acquisition module 10, for obtaining the generated output actual value；Processing module 20, for by the generated output actual value and hair
Electrical power requirements value is compared, to obtain comparative result；And in the case where the comparative result is in setting range, root
The heating parameters of boiler are determined according to the thermal storage effect of the comparative result and boiler.
In such scheme, acquisition module 10 obtains the generated output requirements and generated output actual value of generating set, place
The generated output requirements and generated output actual value for the generating set that reason module 20 is obtained to acquisition module 10 are compared, with
The comparative result of generated output requirements and generated output actual value is further determined that, when comparative result is in setting range, is said
Bright to need to carry out heating regulation, now, the thermal storage effect of bonded boiler determines the heating parameters of boiler, for example, determine the benefit of boiler
Coal amount and benefit coal time, improve response speed, improve degree of regulation and response speed, improve control quality.
Fig. 6 is the system architecture signal that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention
Figure.The system that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention as shown in Figure 6, the place
Reason module 20 also includes：
Deviation computing module 21, the difference for calculating the generated output requirements and the generated output actual value；
And
Absolute value computing module 22, calculates the absolute value for the difference that the deviation computing module is calculated.
In such scheme, deviation computing module 21 calculates the generated output requirements and the generated output actual value
Difference, absolute value computing module 22 calculates the absolute value for the difference that the deviation computing module is calculated, to obtain generated output
The comparative result of requirements and generated output actual value.
Fig. 7 is the system architecture signal that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention
Figure.The system that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention as shown in Figure 7, the place
Reason module 20 also includes：Time diffusion module 23, for the accumulation of heat of the corresponding boiler of the generated output requirements is special
Property function relative to variable time carry out differential, with the rate of change for the heating power for obtaining the boiler；And amplitude is micro-
Sub-module 24, for by the thermal storage effect function of the corresponding boiler of the generated output requirements relative to variable power
Amplitude carries out differential, with the response time for the heating power for obtaining the boiler.
In such scheme, time diffusion module 23 is by the thermal storage effect of the corresponding boiler of the generated output requirements
Function carries out differential relative to variable time, to determine the response time of boiler heating, i.e. heat time length, amplitude differential
Module 24 enters the thermal storage effect function of the corresponding boiler of the generated output requirements relative to variable power magnitude
Row differential, to determine the response speed of the rate of change of heating power, i.e. boiler heating.
In such scheme, the processing module 20 is further configured to：According to the rate of change of the heating power of the boiler
The benefit coal amount of the boiler is determined with the response time of the heating power and is mended the coal time.
In such scheme, the benefit coal time of boiler is determined according to the response time of the heating power of boiler, according to boiler
The rate of change of heating power determines the benefit coal amount of boiler.
Fig. 8 is the system architecture signal that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention
Figure.The system that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention as shown in Figure 8, the place
Reason module 20 also includes：Comparison module 25；For judging that comparative result may determine that definitely whether in range of set value, such as
Whether it is worth the absolute value of the generated output requirements of the calculating of computing module 22 and the difference of generated output actual value in setting range
It is interior.When comparison module 25 judges comparative result in setting range, time diffusion module 23 and amplitude derivative module 24 carry out phase
The derivation operation answered.It can for example be operated by 25 triggered time of comparison module derivative module 23 and amplitude derivative module 24,
Or can be triggered by processing module 20 according to the judged result output signal of comparison module 25 or control time derivative module 23
Operated with amplitude derivative module 24.
In such scheme, the setting range is 3-8MW/ hours.When comparison module 25 judges comparative result in the scope
When interior, derivative module 23 and amplitude derivative module 24 carry out corresponding derivation operation.
Fig. 9 is the system architecture signal that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention
Figure.The system that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention as shown in Figure 9, the place
Reason module 20 also includes：Handover module 26, for being triggered according to the judged result of comparison module 25 by the generated output need of acquisition
Evaluation is output to time diffusion module 23 and amplitude derivative module 24, to carry out corresponding derivation operation.
In such scheme, when comparison module 25 judges that comparative result is in setting range, the switching of handover module 26 is obtained
Generated output requirements carry out corresponding derivation operation to time derivative module 23 and amplitude derivative module 24.Work as comparison module
25 judge comparative result not in setting range, such as not in the range of 3-8MW/ hours, then the switching numerical value of handover module 26 " 0 "
To time derivative module 23 and amplitude derivative module 24, then without corresponding derivation operation.
Figure 10 is the method logic fortune that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention
Nomogram.As shown in Figure 10, AGC (Automatic Generation Control) instruction/generated output requirements and actual work(
Rate (i.e. generated output actual value) is tried to achieve definitely after asking poor Δ computing module to carry out computing into absolute value ABS computing modules
Value, then selects and recommends Δ H/L computing modules into height and is compared computing, when absolute value is in setting range, such as in 3-
When in the range of 8MW/ hours, AGC instructions are transferred to control switching T computing modules into time diffusion d/dt computing modules and amplitude is micro-
Point ≮ ≯ computing module, with the thermal storage effect function f (x) of the corresponding boiler of the generated output requirements relative to variable
Time carry out differential, and by the thermal storage effect function of the corresponding boiler of the generated output requirements relative to variable
Power magnitude carries out differential, and the heating response time of obtained boiler and heating response speed are exported by A.
Generating set is under agc mode, mostly 4-15MW Smaller loads Spline smoothing, and transformation period is short.Because unit is adjusted
Section characteristic can not respond rapidly to AGC instruction changes, for such a situation, and thermal control personnel optimize system as base using Siemens PROFI
Plinth platform is redeveloped, and AGC instruction fast-response control plans have been formulated in coordinated control system specifically designed for AGC operating modes
Slightly.
Control logic filters the signal that too small possibility is interference signal, it is not necessary to make sound to judge AGC instruction sizes
Should, excessive signal is filtered, it may be the instruction of negative control pattern, also be not required to quick response.After processing AGC instruction through it is variable when
Between and variable power amplitude the differential action after send into PROFI system fast loops, realize load quick response and later stage unbiased
Difference.
The method that determination boiler heating parameters are instructed by generated output of one embodiment of the present invention, is needed to generated output
Evaluation instruction/AGC instructions are handled, such as fast by building using Siemens PROFI coordinated control system fast loops
Fast response logic, using boiler heat storage characteristic, quick response is made to generated output requirements instruction/AGC instructions step, different
The different instruction speeds of response of AGC instruction widths correspondence, can generally be responded within the several seconds, it is accurate using thermal storage effect
Coal amount is mended needed for calculating, main vapour pressure will not fluctuate caused by quick response and influence unit stable conditions.
Figure 11 is to instruct the method for determining boiler heating parameters to adjust by generated output using one embodiment of the present invention
Save the comparison diagram before and after boiler heating.Wherein (1) is to determine boiler heating parameters using being instructed by generated output for the present invention
The relativity of generated output requirements and generated output actual value before method, (2) are by generated output using the present invention
Instruction determines the generated output requirements after the method for boiler heating parameters and the relativity of generated output actual value.
By comparing, boiler heating parameters are determined using being instructed by generated output for one embodiment of the present invention
Method regulation boiler heating, generated output actual value tends to be identical with generated output requirements, improves the hysteresis quality of regulation, and bent
Line change is smooth, and system operation is more stablized, and improves control accuracy, improves control quality.
The optional embodiment of example of the present invention is described in detail above in association with accompanying drawing, still, the embodiment of the present invention is not limited
Detail in above-mentioned embodiment, can be to the embodiment of the present invention in the range of the technology design of the embodiment of the present invention
Technical scheme carry out a variety of simple variants, these simple variants belong to the protection domain of the embodiment of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the embodiment of the present invention pair
Various possible combinations no longer separately illustrate.
It will be appreciated by those skilled in the art that realizing that all or part of step in above-described embodiment method can be by
Program instructs the hardware of correlation to complete, and the program storage is in a storage medium, including some instructions are to cause one
Individual (can be single-chip microcomputer, chip etc.) or processor (processor) perform the whole of each embodiment methods described of the application
Or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
In addition, can also be combined between a variety of embodiments of the embodiment of the present invention, as long as it is not
The thought of the embodiment of the present invention is run counter to, it should equally be considered as disclosure of that of the embodiment of the present invention.
Claims (10)
1. a kind of instruct the method for determining boiler heating parameters by generated output, this method includes：
Obtain generated output requirements and generated output actual value；
The generated output requirements and the generated output actual value are compared, to obtain comparative result；And
In the case where the comparative result is in setting range, pot is determined according to the thermal storage effect of the comparative result and boiler
The heating parameters of stove.
2. according to the method described in claim 1, wherein, the generated output requirements and the generated output actual value are entered
Row compares, and is included with obtaining comparative result：
The difference of the generated output requirements and the generated output actual value is calculated, and calculates the absolute value of the difference.
3. method according to claim 2, wherein, boiler is determined according to the thermal storage effect of the comparative result and boiler
Heating parameters include：By the thermal storage effect function of the corresponding boiler of the generated output requirements relative to variable time
Differential is carried out with variable power magnitude, with the response time of the heating power that obtains the boiler and the change speed of heating power
Rate.
4. method according to claim 3, this method also includes：
The benefit of the boiler is determined according to the rate of change of the response time of the heating power of the boiler and the heating power
Coal time and benefit coal amount.
5. according to the method described in claim 1, wherein, the setting range be 3-8MW/ hours.
6. a kind of instruct the system for determining boiler heating parameters by generated output, the system includes：
Acquisition module, for obtaining the generated output actual value；
Processing module, for the generated output actual value and generated output requirements to be compared, to obtain comparative result；
And
In the case where the comparative result is in setting range, pot is determined according to the thermal storage effect of the comparative result and boiler
The heating parameters of stove.
7. system according to claim 6, wherein, the processing module includes：
Deviation computing module, the difference for calculating the generated output requirements and the generated output actual value；And
Absolute value computing module, calculates the absolute value for the difference that the deviation computing module is calculated.
8. system according to claim 7, wherein, the processing module also includes：
Time diffusion module, for by the thermal storage effect function of the corresponding boiler of the generated output requirements relative to can
The time of change carries out differential, with the response time for the heating power for obtaining the boiler；And
Amplitude derivative module, for by the thermal storage effect function of the corresponding boiler of the generated output requirements relative to can
The power magnitude of change carries out differential, with the rate of change for the heating power for obtaining the boiler.
9. system according to claim 8, wherein, the processing module is further configured to：
The benefit of the boiler is determined according to the rate of change of the response time of the heating power of the boiler and the heating power
Coal time and benefit coal amount.
10. method according to claim 6, wherein, the setting range is 3-8MW/ hours.
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| CN201710357546.6A CN107228380A (en) | 2017-05-19 | 2017-05-19 | The method and system for determining boiler heating parameters are instructed by generated output |
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| CN201710357546.6A CN107228380A (en) | 2017-05-19 | 2017-05-19 | The method and system for determining boiler heating parameters are instructed by generated output |
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| US20120104770A1 (en) * | 2010-10-29 | 2012-05-03 | Jacob Sajan Joseph | Regenerative power charging for electricity generation systems |
| CN102629762A (en) * | 2012-04-24 | 2012-08-08 | 湖北省电力公司电力试验研究院 | Floating frequency difference regulation and variable rate load instruction modification-based primary frequency regulation method |
| CN103437838A (en) * | 2013-08-01 | 2013-12-11 | 国家电网公司 | Method for effectively improving quick response on external load change for generator set |
| CN104791754A (en) * | 2014-04-23 | 2015-07-22 | 上海明华电力技术工程有限公司 | Supercritical or ultra-supercritical generating set variable-load overshoot control method |
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Application publication date: 20171003 |