CN107024883A - Fired power generating unit load adjusting method and device and storage medium, processor - Google Patents
Fired power generating unit load adjusting method and device and storage medium, processor Download PDFInfo
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- CN107024883A CN107024883A CN201710305060.8A CN201710305060A CN107024883A CN 107024883 A CN107024883 A CN 107024883A CN 201710305060 A CN201710305060 A CN 201710305060A CN 107024883 A CN107024883 A CN 107024883A
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- 238000000034 method Methods 0.000 title claims abstract description 138
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 159
- 230000001105 regulatory effect Effects 0.000 claims abstract description 88
- 230000008569 process Effects 0.000 claims abstract description 11
- 230000001276 controlling effect Effects 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 25
- 230000000694 effects Effects 0.000 description 16
- 230000008859 change Effects 0.000 description 11
- 230000003044 adaptive effect Effects 0.000 description 10
- 240000002853 Nelumbo nucifera Species 0.000 description 7
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 7
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 7
- 238000006392 deoxygenation reaction Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a kind of fired power generating unit load adjusting method and device and storage medium, processor.This method includes：Valve valve limit of the water regulating valve under the working method of different condensate pumps on oxygen-eliminating device is obtained, the working method of condensate pump includes power frequency working method and variable frequency work mode, and valve valve limit includes higher limit and lower limit；The tune load feedforward amount under the working method of different condensate pumps is obtained, adjusts load feedforward amount to be used to indicate to be controlled the condensing water flow of condensate pump；The water level deviation for adjusting load feedforward amount and oxygen-eliminating device is subjected to summation process, obtains controlling variable, control variable is used for the aperture for indicating the upper water regulating valve of regulation oxygen-eliminating device；The aperture of the upper water regulating valve of oxygen-eliminating device is adjusted in the range of higher limit and lower limit according to control variable, to adjust fired power generating unit load.The present invention solve condensate in correlation technique adjust duty control method can not compatible condensate pump power frequency and the technical problem of variable frequency work pattern.
Description
Technical field
The present invention relates to field of thermal power, in particular to a kind of fired power generating unit load adjusting method and device with
And storage medium, processor.
Background technology
In order to meet the varying duty requirement of power network Automatic Generation Control (AGC), and the economic performance of unit is improved, more
Start to use the energy-saving coordination control based on condensate pump frequency modulation load under the high pitch standard-sized sheet mode of steam turbine come more units
Technology improves the performance driving economy of unit.The technical work principle is the accumulation of energy using unit condensate/heat regenerative system, is passed through
The quick aperture for changing water regulating valve on oxygen-eliminating device, changes condensing water flow, so as to change the amount of drawing gas, temporarily obtains or release one
The load of part of generating units, makes up the defect that steam turbine pitch standard-sized sheet, load responding are deteriorated, reaches the effect of energy-conservation.
At the same time, to save the energy, station service power consumption rate is reduced, many power plant are on the power frequency operation basis of original condensate pump
On add the frequency conversion function of condensate pump.Find in actual applications, condensate pump uses power frequency and change under the same load
Frequently during two kinds of different modes work, by the effect of water regulating valve on the oxygen-eliminating device of identical change amplitude, change it is solidifying
The flow born water is different, and then also different using the variable quantity of power frequency and the condensate pump load of frequency conversion.If condensate pump is first adopted
Implement condensate pump frequency modulation burden functional with conversion system, then switch to the power frequency mode of condensate pump, then adjusted in condensate pump
When frequency burden functional is responded, the flow of condensate will increase, so as to easily make the water level of condenser and oxygen-eliminating device cause play
Strong fluctuation, and can also have the risk for breaking through condensate pump recirculation door；If condensate pump is first implemented to condense using power frequency mode
Water adjusts burden functional, then switches to the conversion system of condensate pump, then when condensate pump frequency modulation burden functional is responded, condensate
Flow will diminish, so as to be unable to reach the energy-saving effect of Condensate Pump Frequency Conversion, be not enough to reach that varying duty responds demand.Cause
How this effectively takes into account solidifying pump power frequency, converting operation mode on the basis of condensate pump frequency modulation load technique, is worth further
Research.
The problem of energy-saving effect that frequency conversion condensate pump can not safely, effectively be reached for above-mentioned, not yet propose have at present
The solution of effect.
The content of the invention
The embodiments of the invention provide a kind of fired power generating unit load adjusting method and device and storage medium, processor,
With at least solve condensate in correlation technique adjust duty control method can not compatible condensate pump power frequency and variable frequency work pattern
Technical problem.
One side according to embodiments of the present invention there is provided a kind of fired power generating unit load adjusting method, including：Acquisition is removed
Valve valve limit of the water regulating valve under the working method of different condensate pumps on oxygen device, wherein, the work of the condensate pump
Mode includes power frequency working method and variable frequency work mode, and the valve valve limit includes higher limit and lower limit；Obtain in difference
The condensate pump working method under tune load feedforward amount, wherein, the tune load feedforward amount is used to indicate to described
The condensing water flow of condensate pump is controlled；The water level deviation of the tune load feedforward amount and the oxygen-eliminating device is summed
Processing, obtains controlling variable, wherein, the control variable is used for the aperture for indicating the upper water regulating valve of the regulation oxygen-eliminating device；
And the upper water regulating valve of the oxygen-eliminating device is adjusted in the range of the higher limit and the lower limit according to the control variable
Aperture, to adjust the fired power generating unit load.
Further, valve valve limit bag of the water regulating valve under the working method of different condensate pumps on oxygen-eliminating device is obtained
Include：In the case where the condensate pump is in the power frequency working method, by the minimum stream of the condensate of the condensate pump
Amount is defined as the lower limit；The target condensate of the condensate pump is determined according to the predetermined load demand of the fired power generating unit
Flow, and the target condensing water flow is defined as the higher limit；The variable frequency work side is in the condensate pump
In the case of formula, the higher limit and lower limit are determined according to the working frequency of the condensate pump.
Further, the tune load feedforward amount obtained under the working method of the different condensate pumps includes：Institute
State in the case that condensate pump is in the power frequency working method, the tune load feedforward amount is reduced into the first predetermined threshold；
In the case that the condensate pump is in the variable frequency work mode, the tune load feedforward amount is increased into by the second predetermined threshold,
Wherein, second predetermined threshold is related to the working frequency of the condensate pump.
Further, the oxygen-eliminating device is adjusted in the range of the higher limit and the lower limit according to the control variable
Upper water regulating valve aperture, included with adjusting the fired power generating unit load：Worked in the condensate pump in the power frequency
In the case of mode, the tune load feedforward amount and described under the power frequency working method is according to the condensate pump
Water regulating valve is in the valve valve limit under the power frequency working method in the condensate pump on oxygen-eliminating device, adjusts the oxygen-eliminating device
Upper water regulating valve aperture, to adjust the fired power generating unit load.
Further, the oxygen-eliminating device is adjusted in the range of the higher limit and the lower limit according to the control variable
Upper water regulating valve aperture, included with adjusting the fired power generating unit load：The variable frequency work is in the condensate pump
In the case of mode, the tune load feedforward amount and described under the variable frequency work mode is according to the condensate pump
Water regulating valve is in the valve valve limit under the variable frequency work mode in the condensate pump on oxygen-eliminating device, adjusts the oxygen-eliminating device
Upper water regulating valve aperture, to adjust the fired power generating unit load.
To achieve these goals, there is provided a kind of storage medium, the storage medium according to another aspect of the present invention
Program including storage, wherein, equipment where the storage medium is controlled when described program is run performs fire described above
Group of motors load adjusting method.
To achieve these goals, according to another aspect of the present invention there is provided a kind of processor, the processor is used for
Operation program, wherein, described program performs fired power generating unit load adjusting method described above when running.
Another aspect according to embodiments of the present invention, additionally provides a kind of fired power generating unit weight adjustment device, including：First
Acquiring unit, for obtaining valve valve limit of the water regulating valve under the working method of different condensate pumps on oxygen-eliminating device, wherein,
The working method of the condensate pump includes power frequency working method and variable frequency work mode, valve valve limit include higher limit with
Lower limit；Second acquisition unit, for obtaining the tune load feedforward amount under the working method of the different condensate pumps, its
In, it is described to adjust load feedforward amount to be used to indicate to be controlled the condensing water flow of the condensate pump；Computing unit, for inciting somebody to action
It is described to adjust load feedforward amount and the water level deviation of the oxygen-eliminating device to carry out summation process, obtain controlling variable, wherein, the control
Variable is used for the aperture for indicating the upper water regulating valve of the regulation oxygen-eliminating device；And adjustment unit, for being become according to the control
Amount adjusts the aperture of the upper water regulating valve of the oxygen-eliminating device in the range of the higher limit and the lower limit, to adjust the fire
Group of motors load.
Further, the first acquisition unit includes：First determining module, it is described for being in the condensate pump
In the case of power frequency working method, the minimum discharge of the condensate of the condensate pump is defined as the lower limit；According to institute
The predetermined load demand for stating fired power generating unit determines the target condensing water flow of the condensate pump, and the target is condensed into current
Amount is defined as the higher limit；Second determining module, the situation for being in the variable frequency work mode in the condensate pump
Under, the higher limit and lower limit are determined according to the working frequency of the condensate pump.
Further, the second acquisition unit includes：First adjustment module, it is described for being in the condensate pump
In the case of power frequency working method, the tune load feedforward amount is reduced into the first predetermined threshold；Second adjustment module, in institute
State in the case that condensate pump is in the variable frequency work mode, the tune load feedforward amount is increased into by the second predetermined threshold, its
In, second predetermined threshold is related to the working frequency of the condensate pump.
In embodiments of the present invention, by obtaining the upper water regulating valve of oxygen-eliminating device in condensate pump power frequency working method and change
The higher limit and lower limit of valve valve limit in the case of frequency working method, and acquisition condensate pump are controlled under different operating mode
The tone character of condensing water flow processed closes feedforward amount, and adjusts load feedforward amount and the water level deviation of oxygen-eliminating device to carry out at summation acquisition
Reason, obtains the control variable of the upper water regulating valve aperture for indicating regulation oxygen-eliminating device, further according to the control variable in oxygen-eliminating device
Upper water regulating valve valve valve limit in the upper water regulating valve aperture of limit adjustment, to adjust fired power generating unit load, thereby using basis
The control variable for adjusting the water level deviation of load feedforward amount and oxygen-eliminating device to obtain, to adjust the upper water regulating valve aperture of oxygen-eliminating device, enters
And control condensing water flow, solve condensate in correlation technique adjust duty control method can not compatible condensate pump power frequency and
The technical problem of variable frequency work pattern, realizes effectively compatible condensate pump power frequency and variable frequency work pattern, and then reach raising
To fired power generating unit Load Regulation efficiency and the effect of security.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of fired power generating unit load adjusting method according to embodiments of the present invention；
Fig. 2 is a kind of adaptive condensate pump power frequency according to embodiments of the present invention, the condensate tune load of conversion system
The schematic diagram of control method；
Fig. 3 is a kind of schematic diagram of fired power generating unit weight adjustment device according to embodiments of the present invention.
Embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model that the present invention is protected
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or
Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included, for example, the process, method, system, product or the equipment that contain series of steps or unit are not necessarily limited to
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or the intrinsic other steps of equipment or unit.
According to embodiments of the present invention there is provided a kind of fired power generating unit load adjusting method embodiment, it is necessary to explanation,
The step of flow of accompanying drawing is illustrated can perform in the computer system of such as one group computer executable instructions, also,
, in some cases, can be shown to be performed different from order herein although showing logical order in flow charts
The step of going out or describe.
Fig. 1 is the flow chart of fired power generating unit load adjusting method according to embodiments of the present invention, as shown in figure 1, this method
Comprise the following steps：
Step S102, obtains valve valve limit of the water regulating valve under the working method of different condensate pumps on oxygen-eliminating device,
Wherein, the working method of condensate pump includes power frequency working method and variable frequency work mode, and valve valve limit includes higher limit with
Limit value；
Step S104, obtains the tune load feedforward amount under the working method of different condensate pumps, wherein, adjust before load
Feedback amount is used to indicate to be controlled the condensing water flow of condensate pump；
Step S106, summation process is carried out by the water level deviation for adjusting load feedforward amount and oxygen-eliminating device, obtains controlling variable, its
In, control variable is used for the aperture for indicating the upper water regulating valve of regulation oxygen-eliminating device；
Step S108, is opened according to the upper water regulating valve that control variable adjusts in the range of higher limit and lower limit oxygen-eliminating device
Degree, to adjust fired power generating unit load.
According to above-mentioned steps, by obtaining the upper water regulating valve of oxygen-eliminating device in condensate pump power frequency working method and frequency conversion work
Make the higher limit and lower limit of the valve valve limit in the case of mode, and obtain condensate pump control to coagulate under different operating mode
The tone character for bearing water flow closes feedforward amount, and adjusts load feedforward amount and the water level deviation of oxygen-eliminating device to carry out summation process acquisition,
The control variable of the upper water regulating valve aperture for indicating regulation oxygen-eliminating device is obtained, further according to the control variable in the upper of oxygen-eliminating device
The upper water regulating valve aperture of limit adjustment in the valve valve limit of water regulating valve, to adjust fired power generating unit load, thereby using negative according to adjusting
The control variable that lotus feedforward amount and the water level deviation of oxygen-eliminating device are obtained, to adjust the upper water regulating valve aperture of oxygen-eliminating device, and then is controlled
Condensing water flow processed, solve condensate in correlation technique adjust duty control method can not compatible condensate pump power frequency and frequency conversion
The technical problem of mode of operation, realizes effectively compatible condensate pump power frequency and variable frequency work pattern, and then reach raising to fire
The effect of group of motors Load Regulation efficiency and security.
It should be noted that fired power generating unit includes electricity generation system and circulation, wherein, the workflow of electricity generation system
It is to be allowed to the water that the chemical energy of fuel is changed into heat energy, heating boiler in the boiler to be changed into steam, steam enters steamer
Machine, thermal energy is mechanical energy, the mechanical energy of steam turbine rotation drives electrical power generators, machinery by pushing turbine rotation
Electric energy can be changed into；The workflow of circulation is to extract the steam in steam turbine, and by the effect of condensate pump, will
Steam is converted to condensate and transmitted into oxygen-eliminating device, and oxygen-eliminating device will be transmitted in back boiler after condensed water deoxygenation.In above-mentioned thermoelectricity
In unit, the upper water regulating valve of oxygen-eliminating device is included between oxygen-eliminating device and condensate pump, aperture of water regulating valve is bigger on this, condensed
The flow of water is bigger, therefore the quantity of steam extracted from steam turbine is bigger, and the steam of pushing turbine rotation will be reduced, so that
Play the effect of regulation fired power generating unit load.
In step s 102, the condensate that condensate pump is transmitted in the case of power frequency working method and variable frequency work mode
Amount is different, in order to ensure the condensate that condensate pump is transmitted can be transmitted to oxygen-eliminating device, and can make condensing water flow and
The pressure for transmitting the main pipe of condensate meets the service requirement of condensate pump, it is necessary to predefine condensate pump in power frequency work side
The higher limit and lower limit of the valve valve limit of corresponding oxygen-eliminating device in the case of formula and variable frequency work mode.
In step S104, the condensate pump different tune load feedforward amount of correspondence, condensate under different working methods
Pump controls the flow of condensate in the presence of load feedforward amount is adjusted.
It should be noted that adjusting load feedforward amount normally to be run in fired power generating unit and condensate tune burden functional input
In use, determining to adjust load feedforward amount according to different loads, operating mode.
In step s 106, the water level deviation of oxygen-eliminating device can be the water level of oxygen-eliminating device setting and the difference of actual water level, root
According to the control variable for adjusting the water level deviation sum of load feedforward amount and oxygen-eliminating device to obtain, the control variable can be used to adjust deoxygenation
The aperture of the upper water regulating valve of device, it is ensured that condensing water flow and main-piping pressure meet the work requirements of current condensate pump.
In step S108, in the range of the valve valve limit of the upper water regulating valve of oxygen-eliminating device, by control Variable Control deoxygenation
The aperture of the upper water regulating valve of device, so as to realize the effect of regulation fired power generating unit.
As an alternatively embodiment, water regulating valve is obtained on oxygen-eliminating device under the working method of different condensate pumps
Valve valve limit can include：In the case where condensate pump is in power frequency working method, by the condensate of condensate pump most
Low discharge is defined as lower limit；The target condensing water flow of condensate pump is determined according to the predetermined load demand of fired power generating unit, and
Target condensing water flow is defined as higher limit；In the case where condensate pump is in variable frequency work mode, according to condensate pump
Working frequency determine higher limit and lower limit.
Using the above embodiment of the present invention, condensate pump in the case of power frequency working method, condensate pump exert oneself compared with
Height, determines water regulating valve lower limit on oxygen-eliminating device, while according to unit according to condensate minimum discharge under condensate pump power frequency mode
Requirement under different load to condensing water flow dynamically adjusts the water regulating valve upper limit on oxygen-eliminating device；Condensate pump is in variable frequency work side
In the case of formula, exerting oneself for condensate pump changes and changed with its frequency, and deoxygenation is changed according to Condensate Pump Frequency Conversion frequency dynamic
Water regulating valve valve bound on device, it is ensured that condensing water flow and main-piping pressure meet current condensate pump under different frequency
Work requirements.
As an optional embodiment, the tune load feedforward amount obtained under the working method of different condensate pumps can
With including：In the case where condensate pump is in power frequency working method, load feedforward amount will be adjusted to reduce the first predetermined threshold；Solidifying
Bear water pump be in variable frequency work mode in the case of, by adjust load feedforward amount increase the second predetermined threshold, wherein, the second predetermined threshold
Value is related to the working frequency of condensate pump.
Using the above embodiment of the present invention, in the case where condensate pump is in power frequency working method, condensate pump reaches
Nominal output, in order that fired power generating unit can reach the effect of varying duty, it is necessary to which condensate pump power frequency working method is corresponding
Adjust load feedforward amount to weaken, load feedforward amount will be adjusted to reduce the first predetermined threshold, to adapt to the power frequency work side of condensate pump
Work requirements under formula；In the case where condensate pump is in power frequency working method, condensate pump is exerted oneself with condensate pump
The change of frequency and change, in order that fired power generating unit can reach the effect of preferable varying duty, it is necessary to by condensate pump power frequency
Working method is corresponding to adjust load feedforward amount suitably to be adjusted, and load feedforward amount will be adjusted to increase by the second predetermined threshold, with suitable
Answer the work requirements under the variable frequency work mode of condensate pump.
Alternatively, in the case where condensate pump is in variable frequency work mode, load feedforward amount increase by second will be adjusted to make a reservation for
Threshold value, it is just, in the high situation of condensate pump frequency that the second predetermined threshold can be determined in the case where condensate pump frequency is low
The second predetermined threshold of lower determination is negative.
As an optional embodiment, the upper of oxygen-eliminating device is adjusted in the range of higher limit and lower limit according to control variable
The aperture of water regulating valve, can be included with adjusting fired power generating unit load：In the case where condensate pump is in power frequency working method,
Water regulating valve is at condensate pump in the tune load feedforward amount and oxygen-eliminating device being according to condensate pump under power frequency working method
In the valve valve limit under power frequency working method, the aperture of the upper water regulating valve of oxygen-eliminating device is adjusted, to adjust fired power generating unit load.
Using the above embodiment of the present invention, in the case of condensate pump power frequency operation, it can be according to condensate pump
The valve valve limit for adjusting water regulating valve on load feedforward amount and corresponding oxygen-eliminating device under power frequency working method, regulation oxygen-eliminating device
The aperture of upper water regulating valve, and then the load of fired power generating unit is adjusted, so as to the upper water regulating valve by adjusting oxygen-eliminating device
Aperture reaches the effect of the load of regulation fired power generating unit, and corresponding tune load under power frequency working method according to condensate pump
The aperture of water regulating valve in feedforward amount and valve valve limit regulation oxygen-eliminating device, it is ensured that in the process of regulation fired power generating unit load
In, condensing water flow and main-piping pressure meet the work requirements of condensate pump under power frequency working method.
As an optional embodiment, the upper of oxygen-eliminating device is adjusted in the range of higher limit and lower limit according to control variable
The aperture of water regulating valve, can be included with adjusting fired power generating unit load：In the case where condensate pump is in variable frequency work mode,
Water regulating valve is at condensate pump in the tune load feedforward amount and oxygen-eliminating device being according to condensate pump under variable frequency work mode
In the valve valve limit under variable frequency work mode, the aperture of the upper water regulating valve of oxygen-eliminating device is adjusted, to adjust fired power generating unit load.
Using the above embodiment of the present invention, in the case where Condensate Pump Frequency Conversion is run, it can be according to condensate pump
The valve valve limit for adjusting water regulating valve on load feedforward amount and corresponding oxygen-eliminating device become under frequent working method, adjusts oxygen-eliminating device
Upper water regulating valve aperture, and then adjust fired power generating unit load, so as to the upper water regulating valve by adjusting oxygen-eliminating device
Aperture reach regulation fired power generating unit load effect, and corresponding under variable frequency work mode according to condensate pump adjust negative
The aperture of water regulating valve in lotus feedforward amount and valve valve limit regulation oxygen-eliminating device, it is ensured that in the mistake of regulation fired power generating unit load
Cheng Zhong, condensing water flow and main-piping pressure meet the work requirements of condensate pump under variable frequency work mode.
Present invention also offers a kind of preferred embodiment, the preferred embodiment provides a kind of adaptive condensate pump work
Frequently, the condensate of conversion system adjusts duty control method.
There is power frequency, in the fired power generating unit of variable frequency work mode in condensate pump, implement to adjust load based on condensate throttling
Energy-saving Coordinated Control, if according to Condensate Pump Frequency Conversion working method implement condensate adjust burden functional, condense
In the case that water pump switches to power frequency working method, the flowed fluctuation of corresponding condensate will increase, and cause condenser and deoxygenation
Device water-level fluctuation acutely, can produce the risk that the recirculation door of condensate pump is opened；If according to condensate pump power frequency working method
Implement condensate and adjust burden functional, then in the case where condensate pump switches to variable frequency work mode, corresponding condensing water flow
Change is smaller, so that the energy-saving effect of Condensate Pump Frequency Conversion can not be utilized effectively.
The present invention proposes a kind of adaptive condensate pump power frequency, the condensate of conversion system adjusts duty control method, should
Method can adjust load to carry out intelligent weighting to condensate and handle automatically according to condensate pump power frequency, the working method of frequency conversion, simultaneously
Water regulating valve valve is limited on adaptive change oxygen-eliminating device, it is ensured that condensate adjusts burden functional in the power frequency and variable frequency work of condensate pump
It can safe and stable, effectively be come into operation under mode, improve the economy of fired power generating unit.
1) the intelligence weighting loop based on condensate pump power frequency, variable frequency work mode.
In the case where fired power generating unit is normally run and condensate adjusts burden functional to come into operation, according to fired power generating unit not
Load together, operating mode, obtain the load deviation between assumed load and actual load in fired power generating unit, and setting in oxygen-eliminating device
Determine the water level deviation of water level and actual water level, and load deviation and water level deviation are weighted processing, obtain condensate and adjust negative
Lotus feedforward amount is instructed.On this basis, according to condensate pump power frequency, variable frequency work mode, intelligence is superimposed to load feedforward amount automatically
Control loop can be weighted.If in the case that condensate pump is in power frequency working method, condensate pump reaches nominal output, to obtain
The varying duty requirement of preferable power network Automatic Generation Control (AGC), then adjust the instruction of load feedforward amount suitably to be subtracted condensate
It is weak, to adapt to the power frequency working method of condensate pump；In the case that if condensate pump is in variable frequency work mode, condensate pump
Exert oneself and changed according to the frequency of condensate pump, it is to obtain the varying duty requirement of preferable power network Automatic Generation Control (AGC), then right
Condensate adjusts weight of the load feedforward amount instruction superposition based on condensate pump frequency, and frequency is low, and weight is referred to greatly with increasing feedforward
Order, the high then weight of frequency is small to reduce feedforward instruction, to adapt to the variable frequency work mode of condensate pump.
2) water regulating valve valve limits technology on oxygen-eliminating device under adaptive condensate pump power frequency, variable frequency work mode.
According to power frequency, the variable frequency work mode of condensate pump, water regulating valve excursion on adaptive adjustment oxygen-eliminating device.When
Condensate pump be in power frequency working method in the case of, condensate pump exert oneself it is higher, according to condensate pump in power frequency working method
Under condensate minimum discharge determine water regulating valve lower limit on oxygen-eliminating device, while according under unit different load to condensing water flow
Requirement dynamically adjustment oxygen-eliminating device on the water regulating valve upper limit；In the case that condensate pump is in variable frequency work mode, condensate
Exerting oneself for pump changes and changed with its frequency, is changed according to Condensate Pump Frequency Conversion frequency dynamic on oxygen-eliminating device on water regulating valve valve
Lower limit, it is ensured that condensing water flow and main-piping pressure meet the service requirement of current solidifying pump at different frequencies.
Fig. 2 is a kind of adaptive condensate pump power frequency according to embodiments of the present invention, the condensate tune load of conversion system
The schematic diagram of control method, as shown in Fig. 2 in implementation process, according to condensate pump power frequency and the different operating mode of frequency conversion,
Adaptive condensate adjusts the weighted volumes of load feedforward to meet condensate varying duty performance requirement, dynamic and adjusts water regulation on oxygen-eliminating device
Valve valve upper lower limit value, it is ensured that, being capable of safe and stable operation under solidifying pump different modes.
In the case where condensate pump is in power frequency working method, intelligence of the selection condensate pump under power frequency working method
Weighting loop to condensate adjust load feedforward instruction be weighted processing, while on oxygen-eliminating device water regulating valve valve limit automatically select it is solidifying
Bear water pump and be in foundation load, the valve limit intelligence computation loop of condensing water flow in the case of power frequency working method, it is ensured that be solidifying
Bear water tune burden functional it is safe and stable under solidifying pump power frequency mode, effectively come into operation.
In the case where condensate pump is in variable frequency work mode, condensate pump is automatically selected under variable frequency work mode
Intelligence weighting loop adjusts load feedforward instruction to be weighted processing to condensate, while the automatic choosing of water regulating valve valve limit on oxygen-eliminating device
Select condensate pump and be in valve limit intelligence computation loop in the case of variable frequency work mode according to frequency, it is ensured that condensate is adjusted negative
Lotus function is safe and stable under solidifying pump frequency conversion mode, effectively come into operation.
The present invention proposes a kind of adaptive condensate pump power frequency, the condensate of conversion system adjusts duty control method, should
Method can adjust load to carry out intelligent weighting to condensate and handle automatically according to condensate pump power frequency, variable frequency work mode, simultaneously
Water regulating valve valve is limited on adaptive change oxygen-eliminating device, is efficiently solved condensate and is adjusted burden functional during coming into operation,
The problem of condensate pump is difficult to take into account under power frequency and the several working ways of frequency conversion, it is ensured that condensate adjusts burden functional condensing
It can safe and stable, effectively be come into operation under water pump power frequency, the different operating mode of frequency conversion, improve the economy of unit.
To achieve these goals, according to another aspect of the present invention, the embodiment of the present invention additionally provides a kind of storage and is situated between
Matter, the storage medium includes the program of storage, wherein, equipment where the storage medium is controlled when described program is run is held
Row fired power generating unit load adjusting method described above.
To achieve these goals, according to another aspect of the present invention, the embodiment of the present invention additionally provides a kind of processor,
The processor is used for operation program, wherein, described program performs fired power generating unit load adjusting method described above when running.
According to embodiments of the present invention, a kind of fired power generating unit weight adjustment device embodiment is additionally provided, it is necessary to illustrate,
The fired power generating unit weight adjustment device can be used for performing the fired power generating unit load adjusting method in the embodiment of the present invention, the present invention
Fired power generating unit load adjusting method in embodiment can be performed in the fired power generating unit weight adjustment device.
Fig. 3 is a kind of schematic diagram of fired power generating unit weight adjustment device according to embodiments of the present invention, as shown in figure 3, should
Device can include：First acquisition unit 31, for obtaining on oxygen-eliminating device water regulating valve in the work side of different condensate pumps
Valve valve limit under formula, wherein, the working method of condensate pump includes power frequency working method and variable frequency work mode, valve valve limit
Including higher limit and lower limit；Second acquisition unit 33, bears for obtaining the tune under the working method of different condensate pumps
Lotus feedforward amount, wherein, adjust load feedforward amount to be used to indicate to be controlled the condensing water flow of condensate pump；Computing unit 35,
For the water level deviation for adjusting load feedforward amount and oxygen-eliminating device to be carried out into summation process, obtain controlling variable, wherein, control variable is used
In the aperture for the upper water regulating valve for indicating regulation oxygen-eliminating device；And adjustment unit 37, for according to control variable in higher limit and
The aperture of the upper water regulating valve of oxygen-eliminating device is adjusted in the range of lower limit, to adjust fired power generating unit load.
The above embodiment of the present invention, by obtaining the upper water regulating valve of oxygen-eliminating device in condensate pump power frequency working method and change
The higher limit and lower limit of valve valve limit in the case of frequency working method, and acquisition condensate pump are controlled under different operating mode
The tune load feedforward amount of condensing water flow processed, and adjust load feedforward amount and the water level deviation of oxygen-eliminating device to carry out at summation acquisition
Reason, obtains the control variable of the upper water regulating valve aperture for indicating regulation oxygen-eliminating device, further according to the control variable in oxygen-eliminating device
Upper water regulating valve valve valve limit in the upper water regulating valve aperture of limit adjustment, to adjust fired power generating unit load, thereby using basis
The control variable for adjusting the water level deviation of load feedforward amount and oxygen-eliminating device to obtain, to adjust the upper water regulating valve aperture of oxygen-eliminating device, enters
And control condensing water flow, solve condensate in correlation technique adjust duty control method can not compatible condensate pump power frequency and
The technical problem of variable frequency work pattern, realizes effectively compatible condensate pump power frequency and variable frequency work pattern, and then reach raising
To fired power generating unit Load Regulation efficiency and the effect of security.
It should be noted that the first acquisition unit 31 in the embodiment can be used for performing the step in the embodiment of the present application
Second acquisition unit 33 in rapid S102, the embodiment, can be used for performing the step S104 in the embodiment of the present application, the implementation
The adjustment unit 37 that computing unit 35 in example can be used for performing in the step S106 in the embodiment of the present application, the embodiment can
For performing the step S108 in the embodiment of the present application.Example and application scenarios that above-mentioned module is realized with corresponding step
It is identical, but it is not limited to above-described embodiment disclosure of that.
As an optional embodiment, first acquisition unit can include：First determining module, in condensate pump
In the case of power frequency working method, the minimum discharge of the condensate of condensate pump is defined as lower limit；According to thermal motor
The predetermined load demand of group determines the target condensing water flow of condensate pump, and target condensing water flow is defined as into higher limit；
Second determining module, it is true according to the working frequency of condensate pump in the case of being in variable frequency work mode in condensate pump
Determine higher limit and lower limit.
As an optional embodiment, second acquisition unit can include：First adjustment module, in condensate pump
In the case of power frequency working method, load feedforward amount will be adjusted to reduce the first predetermined threshold；Second adjustment module, for solidifying
Bear water pump be in variable frequency work mode in the case of, by adjust load feedforward amount increase the second predetermined threshold, wherein, the second predetermined threshold
Value is related to the working frequency of condensate pump.
As an optional embodiment, adjustment unit can include：The feelings of power frequency working method are in condensate pump
Under condition, water regulating valve is in condensate in the tune load feedforward amount and oxygen-eliminating device being according to condensate pump under power frequency working method
Pump is in the valve valve limit under power frequency working method, adjusts the aperture of the upper water regulating valve of oxygen-eliminating device, is born with adjusting fired power generating unit
Lotus.
As an optional embodiment, adjustment unit can include：The feelings of variable frequency work mode are in condensate pump
Under condition, water regulating valve is in condensate in the tune load feedforward amount and oxygen-eliminating device being according to condensate pump under variable frequency work mode
Pump is in the valve valve limit under variable frequency work mode, adjusts the aperture of the upper water regulating valve of oxygen-eliminating device, is born with adjusting fired power generating unit
Lotus.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in some embodiment
The part of detailed description, may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, others can be passed through
Mode is realized.Wherein, device embodiment described above is only schematical, such as division of described unit, Ke Yiwei
A kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be the INDIRECT COUPLING or communication link of unit or module by some interfaces
Connect, can be electrical or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, it can be stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially
The part contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer
Equipment (can for personal computer, server or network equipment etc.) perform each embodiment methods described of the invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of fired power generating unit load adjusting method, it is characterised in that including：
Valve valve limit of the water regulating valve under the working method of different condensate pumps on oxygen-eliminating device is obtained, wherein, it is described to condense
The working method of water pump includes power frequency working method and variable frequency work mode, and the valve valve limit includes higher limit and lower limit；
The tune load feedforward amount under the working method of the different condensate pumps is obtained, wherein, the tune load feedforward amount
For indicating to be controlled the condensing water flow of the condensate pump；
The tune load feedforward amount and the water level deviation of the oxygen-eliminating device are subjected to summation process, obtain controlling variable, wherein, institute
State the aperture that control variable is used to indicate the upper water regulating valve of the regulation oxygen-eliminating device；And
The upper water regulating valve of the oxygen-eliminating device is adjusted in the range of the higher limit and the lower limit according to the control variable
Aperture, to adjust the fired power generating unit load.
2. according to the method described in claim 1, it is characterised in that water regulating valve is in different condensate pumps on acquisition oxygen-eliminating device
Working method under valve valve limit include：
In the case where the condensate pump is in the power frequency working method, by the minimum stream of the condensate of the condensate pump
Amount is defined as the lower limit；The target condensate of the condensate pump is determined according to the predetermined load demand of the fired power generating unit
Flow, and the target condensing water flow is defined as the higher limit；
In the case where the condensate pump is in the variable frequency work mode, determined according to the working frequency of the condensate pump
The higher limit and lower limit.
3. according to the method described in claim 1, it is characterised in that obtain under the working method of the different condensate pumps
Tune load feedforward amount include：
In the case where the condensate pump is in the power frequency working method, the tune load feedforward amount is reduced first and made a reservation for
Threshold value；
In the case where the condensate pump is in the variable frequency work mode, the tune load feedforward amount increase by second is made a reservation for
Threshold value, wherein, second predetermined threshold is related to the working frequency of the condensate pump.
4. according to the method described in claim 1, it is characterised in that according to the control variable the higher limit and it is described under
The aperture of the upper water regulating valve of the regulation oxygen-eliminating device, is included with adjusting the fired power generating unit load in limits：
In the case where the condensate pump is in the power frequency working method, the power frequency work is according to the condensate pump
Make water regulating valve on the tune load feedforward amount and the oxygen-eliminating device under mode and be in the power frequency in the condensate pump
Valve valve limit under working method, adjusts the aperture of the upper water regulating valve of the oxygen-eliminating device, to adjust the fired power generating unit load.
5. the method according to claim 1 or 4, it is characterised in that according to the control variable in the higher limit and institute
The aperture for the upper water regulating valve that the oxygen-eliminating device is adjusted in the range of lower limit is stated, is included with adjusting the fired power generating unit load：
In the case where the condensate pump is in the variable frequency work mode, the frequency conversion work is according to the condensate pump
Make water regulating valve on the tune load feedforward amount and the oxygen-eliminating device under mode and be in the frequency conversion in the condensate pump
Valve valve limit under working method, adjusts the aperture of the upper water regulating valve of the oxygen-eliminating device, to adjust the fired power generating unit load.
6. a kind of storage medium, it is characterised in that the storage medium includes the program of storage, wherein, in described program operation
When control the storage medium where fired power generating unit Load Regulation side in equipment perform claim requirement 1 to 5 described in any one
Method.
7. a kind of processor, it is characterised in that the processor is used for operation program, wherein, right of execution when described program is run
Profit requires the fired power generating unit load adjusting method described in any one in 1 to 5.
8. a kind of fired power generating unit weight adjustment device, it is characterised in that including：
First acquisition unit, for obtaining valve valve of the water regulating valve under the working method of different condensate pumps on oxygen-eliminating device
Limit, wherein, the working method of the condensate pump includes power frequency working method and variable frequency work mode, and the valve valve limit includes
Higher limit and lower limit；
Second acquisition unit, for obtaining the tune load feedforward amount under the working method of the different condensate pumps, wherein,
It is described to adjust load feedforward amount to be used to indicate to be controlled the condensing water flow of the condensate pump；
Computing unit, for the water level deviation of the tune load feedforward amount and the oxygen-eliminating device to be carried out into summation process, is controlled
Variable processed, wherein, the control variable is used for the aperture for indicating the upper water regulating valve of the regulation oxygen-eliminating device；And
Adjustment unit, for adjusting the oxygen-eliminating device in the range of the higher limit and the lower limit according to the control variable
Upper water regulating valve aperture, to adjust the fired power generating unit load.
9. device according to claim 8, it is characterised in that the first acquisition unit includes：
First determining module, in the case of being in the power frequency working method in the condensate pump, by the condensate
The minimum discharge of the condensate of pump is defined as the lower limit；Determined according to the predetermined load demand of the fired power generating unit described solidifying
The target condensing water flow of pump is born water, and the target condensing water flow is defined as the higher limit；
Second determining module, in the case of being in the variable frequency work mode in the condensate pump, condenses according to described
The working frequency of water pump determines the higher limit and lower limit.
10. device according to claim 8, it is characterised in that the second acquisition unit includes：
First adjustment module, in the case of being in the power frequency working method in the condensate pump, by the tune load
Feedforward amount reduces the first predetermined threshold；
Second adjustment module, in the case of being in the variable frequency work mode in the condensate pump, by the tune load
Feedforward amount increases by the second predetermined threshold, wherein, second predetermined threshold is related to the working frequency of the condensate pump.
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| CN110347201A (en) * | 2019-08-12 | 2019-10-18 | 江苏方天电力技术有限公司 | A kind of condensed water auxiliary frequency modulation control method and system unidirectionally accurately controlled |
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| CN113819070A (en) * | 2020-10-30 | 2021-12-21 | 湖北华电江陵发电有限公司 | Frequency conversion optimization energy-saving method and system for condensate pump of steam turbine set |
| CN113819070B (en) * | 2020-10-30 | 2024-07-12 | 湖北华电江陵发电有限公司 | Variable-frequency optimization energy-saving method and system for condensate pump of steam turbine unit |
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| CN112653159A (en) * | 2020-12-16 | 2021-04-13 | 润电能源科学技术有限公司 | Condensate throttling auxiliary frequency modulation control method, device, equipment and storage medium |
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| CN116447125A (en) * | 2023-04-11 | 2023-07-18 | 济南奔腾时代电力科技有限公司 | Optimization method for deeply reducing power consumption rate of condensate pump of thermal power generating unit |
| CN116447125B (en) * | 2023-04-11 | 2023-11-17 | 济南奔腾时代电力科技有限公司 | Optimization method for deeply reducing power consumption rate of condensate pump of thermal power generating unit |
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