CN107024883B - 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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- CN107024883B CN107024883B CN201710305060.8A CN201710305060A CN107024883B CN 107024883 B CN107024883 B CN 107024883B CN 201710305060 A CN201710305060 A CN 201710305060A CN 107024883 B CN107024883 B CN 107024883B
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- 238000000034 method Methods 0.000 title claims abstract description 133
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 211
- 230000001105 regulatory effect Effects 0.000 claims abstract description 88
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 26
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 16
- 230000003044 adaptive effect Effects 0.000 description 10
- 230000008859 change Effects 0.000 description 9
- 240000002853 Nelumbo nucifera Species 0.000 description 7
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 7
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000006392 deoxygenation reaction Methods 0.000 description 5
- 238000010586 diagram 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
- 230000001276 controlling effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 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
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method 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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- Control Of Positive-Displacement Pumps (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a kind of fired power generating unit load adjusting methods and device and storage medium, processor.This method comprises: obtaining valve valve limit of the water regulating valve under the working method of different condensate pumps on oxygen-eliminating device, the working method of condensate pump includes power frequency working method and variable frequency work mode, and valve valve limit includes upper limit value and lower limit value；The tune load feedforward amount under the working method of different condensate pumps is obtained, adjusts load feedforward amount to be used to indicate and the condensing water flow of condensate pump is controlled；The water level deviation of load feedforward amount and oxygen-eliminating device will be adjusted to carry out summation process, obtain control variable, control variable is used to indicate the aperture for adjusting the upper water regulating valve of oxygen-eliminating device；The aperture of the upper water regulating valve of oxygen-eliminating device is adjusted, within the scope of upper limit value and lower limit value according to control variable to adjust fired power generating unit load.The present invention solves the technical issues of power frequency and variable frequency work pattern that condensed water tune duty control method in the related technology can not be compatible with condensate pump.
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 technique
In order to require in the varying duty for meeting power grid Automatic Generation Control (AGC), and the economic performance of unit is improved, more
Start come more units using the energy-saving coordinated control based on condensate pump frequency modulation load under the high pitch standard-sized sheet mode of steam turbine
Technology improves the performance driving economy of unit.The technical work principle is to be passed through using the accumulation of energy of unit condensed water/heat regenerative system
The aperture for quickly changing water regulating valve on oxygen-eliminating device, changes condensing water flow, thus change steam extraction amount, temporarily acquisition or release one
The load of part of generating units makes up steam turbine pitch standard-sized sheet, the defect that load responding is deteriorated, reaches energy-efficient effect.
It at the same time, is energy saving, reduction station service power consumption rate, many power plant are on the power frequency operation basis of original condensate pump
On increase the frequency conversion function of condensate pump.It finds in practical 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 is coagulated
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 in condensate pump tune
When frequency burden functional responds, the flow of condensed water will be will increase, to be easy that the water level of condenser and oxygen-eliminating device is made to cause play
Strong fluctuation, and can also have the risk for breaking through condensate pump recirculation door；If condensate pump first uses power frequency mode to implement to condense
Water tune burden functional, then switch to the conversion system of condensate pump, then when condensate pump frequency modulation burden functional responds, condensed water
Flow will become smaller, to be unable to reach the energy-saving effect of Condensate Pump Frequency Conversion, be not enough to reach varying duty response demand.Cause
How this effectively takes into account solidifying pump power frequency, converting operation mode, is worth further on the basis of condensate pump frequency modulation load technique
Research.
Aiming at the problem that the above-mentioned energy-saving effect that can not safely, effectively reach frequency conversion condensate pump, not yet propose have at present
The solution of effect.
Summary of the invention
The embodiment of the invention provides a kind of fired power generating unit load adjusting method and device and storage medium, processor,
At least to solve the power frequency and variable frequency work pattern that condensed water tune duty control method in the related technology can not be compatible with condensate pump
The technical issues of.
According to an aspect of an embodiment of the present invention, a kind of fired power generating unit load adjusting method is provided, comprising: acquisition removes
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 upper limit value and lower limit value；It obtains 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 control variable, wherein the control variable is used to indicate the aperture for adjusting the upper water regulating valve of the oxygen-eliminating device；
And the upper water regulating valve of the oxygen-eliminating device is adjusted within the scope of the upper limit value and the lower limit value according to the control variable
Aperture, to adjust the fired power generating unit load.
Further, it obtains valve valve of the water regulating valve under the working method of different condensate pumps on oxygen-eliminating device and limits packet
It includes: in the case where the condensate pump is in the power frequency working method, by the minimum stream of the condensed water of the condensate pump
Amount is determined as the lower limit value；The target condensed water 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 determined as the upper limit value；The variable frequency work side is in the condensate pump
In the case where formula, the upper limit value and lower limit value 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: in institute
It states 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 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 within the scope of the upper limit value and the lower limit value according to the control variable
Upper water regulating valve aperture, with adjust the fired power generating unit load include: the condensate pump be in the power frequency work
In the case where mode, the tune load feedforward amount under the power frequency working method and described is according to the condensate pump
Water regulating valve is in the limit of the valve valve 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 within the scope of the upper limit value and the lower limit value according to the control variable
Upper water regulating valve aperture, include: to be in the variable frequency work in the condensate pump to adjust the fired power generating unit load
In the case where mode, the tune load feedforward amount under the variable frequency work mode and described is according to the condensate pump
Water regulating valve is in the limit of the valve valve 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 the goals above, according to another aspect of the present invention, a kind of storage medium, the storage medium are provided
Program including storage, wherein equipment where controlling the storage medium in described program operation executes fire described above
Motor group load adjusting method.
To achieve the goals above, according to another aspect of the present invention, a kind of processor is provided, the processor is used for
Run program, wherein described program executes fired power generating unit load adjusting method described above when running.
According to another aspect of an embodiment of the present invention, a kind of fired power generating unit weight adjustment device is additionally provided, comprising: 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, the valve valve limit include upper limit value and
Lower limit value；Second acquisition unit, for obtaining the tune load feedforward amount under the working method of the different condensate pumps,
In, the tune load feedforward amount, which is used to indicate, controls the condensing water flow of the condensate pump；Computing unit, being used for will
It is described that load feedforward amount and the water level deviation of the oxygen-eliminating device is adjusted to carry out summation process, obtain control variable, wherein the control
Variable is used to indicate the aperture for adjusting the upper water regulating valve of the oxygen-eliminating device；And unit is adjusted, for being become according to the control
Amount adjusts the aperture of the upper water regulating valve of the oxygen-eliminating device within the scope of the upper limit value and the lower limit value, to adjust the fire
Electric unit load.
Further, the first acquisition unit includes: the first determining module, for being in described in the condensate pump
In the case where power frequency working method, the minimum discharge of the condensed water of the condensate pump is determined as the lower limit value；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 water flow
Amount is determined as the upper limit value；Second determining module, for the case where the condensate pump is in the variable frequency work mode
Under, the upper limit value and lower limit value are determined according to the working frequency of the condensate pump.
Further, the second acquisition unit includes: the first adjustment module, for being in described in the condensate pump
In the case where power frequency working method, the tune load feedforward amount is reduced into the first predetermined threshold；Second adjustment module, in institute
It states in the case that condensate pump is in the variable frequency work mode, the tune load feedforward amount is increased by the second predetermined threshold,
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 upper limit value and lower limit value of valve valve limit in the case of frequency working method, and obtain condensate pump and controlled under different operating mode
The tone character of condensing water flow processed closes feedforward amount, and the water level deviation of the tune load feedforward amount and oxygen-eliminating device to acquisition carries out at summation
Reason obtains the control variable for being used to indicate the upper water regulating valve aperture for adjusting oxygen-eliminating device, further according to the control variable in oxygen-eliminating device
Upper water regulating valve valve valve limit in limit adjust upper water regulating valve aperture, to adjust fired power generating unit load, to use 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, into
And control condensing water flow, solve condensed water tune duty control method in the related technology can not be compatible with condensate pump power frequency and
The technical issues of variable frequency work pattern, realizes effectively compatible condensate pump power frequency and variable frequency work pattern, and then reaches raising
To the effect of fired power generating unit Load Regulation efficiency and safety.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of fired power generating unit load adjusting method according to an embodiment of the present invention；
Fig. 2 is the condensed water tune load of a kind of adaptive condensate pump power frequency according to an embodiment of the present invention, 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 an embodiment of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
According to embodiments of the present invention, a kind of fired power generating unit load adjusting method embodiment is provided, it should be noted that
The step of process of attached drawing illustrates can execute in a computer system such as a set of computer executable instructions, also,
It, in some cases, can be to be different from shown in sequence execution herein although logical order is shown in flow charts
The step of out or describing.
Fig. 1 is the flow chart of fired power generating unit load adjusting method according to an embodiment of the present invention, as shown in Figure 1, this method
Include 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 upper limit value under
Limit value；
Step S104 obtains the tune load feedforward amount under the working method of different condensate pumps, wherein before adjusting load
Feedback amount, which is used to indicate, controls the condensing water flow of condensate pump；
Step S106 will adjust the water level deviation of load feedforward amount and oxygen-eliminating device to carry out summation process, obtain control variable,
In, control variable is used to indicate the aperture for adjusting the upper water regulating valve of oxygen-eliminating device；
Step S108 adjusts opening for the upper water regulating valve of oxygen-eliminating device according to control variable within the scope of upper limit value and lower limit value
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 upper limit value and lower limit value of the valve valve limit in the case of mode, and obtains condensate pump and controlled under different operating mode and coagulated
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 for being used to indicate the upper water regulating valve aperture for adjusting oxygen-eliminating device is obtained, further according to the control variable in the upper of oxygen-eliminating device
Limit adjusts upper water regulating valve aperture in the valve valve limit of water regulating valve, to adjust fired power generating unit load, thus using negative according to adjusting
The control variable that lotus feedforward amount and the water level deviation of oxygen-eliminating device obtain to adjust the upper water regulating valve aperture of oxygen-eliminating device, and then is controlled
Condensing water flow processed solves power frequency and frequency conversion that condensed water tune duty control method in the related technology can not be compatible with condensate pump
The technical issues of operating mode, realizes effectively compatible condensate pump power frequency and variable frequency work pattern, and then reaches raising to fire
The effect of motor group Load Regulation efficiency and safety.
It should be noted that fired power generating unit includes electricity generation system and circulation, wherein the workflow of electricity generation system
It is that the chemical energy of fuel is changed into thermal energy in the boiler, the water in heating boiler is allowed to become steam, and steam enters steamer
Thermal energy is mechanical energy by machine, pushing turbine rotation, and the mechanical energy of steam turbine rotation drives electrical power generators, machinery
It can become electric energy；The workflow of circulation is the steam in extraction steam turbine, and by the effect of condensate pump, will
Steam is converted to condensed water and is transmitted in oxygen-eliminating device, and oxygen-eliminating device will transmit in back boiler after condensed water deoxygenation.In above-mentioned thermoelectricity
It include the upper water regulating valve of oxygen-eliminating device in unit, between oxygen-eliminating device and condensate pump, aperture of water regulating valve is bigger on this, condensation
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, thus
Play the effect for adjusting fired power generating unit load.
In step s 102, the condensed water that condensate pump transmits in the case where power frequency working method and variable frequency work mode
Amount is different, in order to ensure the condensed water of condensate pump transmission can be transmitted to oxygen-eliminating device, and can make condensing water flow and
The pressure for transmitting the main pipe of condensed water meets the service requirement of condensate pump, needs to predefine condensate pump in power frequency work side
The upper limit value and lower limit value of the valve valve limit of corresponding oxygen-eliminating device in the case of formula and variable frequency work mode.
In step S104, condensate pump corresponds to different tune load feedforward amounts, condensed water under different working methods
Pump the flow that condensed water is controlled under the action of adjusting load feedforward amount.
It should be noted that adjusting, load feedforward amount can be operated normally in fired power generating unit and condensed water tune burden functional is put into
Load feedforward amount is adjusted in use, determining according to different loads, operating condition.
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 sum of load feedforward amount and the water level deviation of oxygen-eliminating device to obtain, the control variable can be used and adjust deoxygenation
The aperture of the upper water regulating valve of device guarantees that condensing water flow and main-piping pressure meet the work requirements of current condensate pump.
In step S108, in the valve valve limit range 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, to realize the effect for adjusting fired power generating unit.
As an optionally embodiment, water regulating valve is obtained on oxygen-eliminating device under the working method of different condensate pumps
Valve valve limit may include: in the case where condensate pump is in power frequency working method, most by the condensed water of condensate pump
Small flow is determined as lower limit value；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 determined as upper limit value；In the case where condensate pump is in variable frequency work mode, according to condensate pump
Working frequency determine upper limit value and lower limit value.
Using the above embodiment of the present invention, condensate pump in the case where power frequency working method, the power output of condensate pump compared with
Height determines water regulating valve lower limit on oxygen-eliminating device according to condensed water minimum discharge under condensate pump power frequency mode, while according to unit
The water regulating valve upper limit on requirement dynamic adjustment oxygen-eliminating device under different load to condensing water flow；Condensate pump is in variable frequency work side
In the case where formula, the power output of condensate pump changes with its frequency and is changed, and changes deoxygenation 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
To include: that load feedforward amount will be adjusted to reduce the first predetermined threshold in the case where condensate pump is in power frequency working method；Solidifying
Pump is born water in the case where the variable frequency work mode, load feedforward amount will be adjusted to increase by the second predetermined threshold, wherein the second predetermined threshold
It is worth 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 needs condensate pump power frequency working method is corresponding to make fired power generating unit can achieve the effect of varying duty
It adjusts load feedforward amount to weaken, i.e., 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, the power output of condensate pump is with condensate pump
The variation of frequency and change, in order to make fired power generating unit can achieve the effect of ideal varying duty, need condensate pump power frequency
The corresponding tune load feedforward amount of working method carries out appropriate adjustment, i.e., 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.
Optionally, in the case where condensate pump is in variable frequency work mode, load feedforward amount will be adjusted to increase by second and made a reservation for
Threshold value can determine that the second predetermined threshold is positive in the case where condensate pump frequency is low, in the high situation of condensate pump frequency
Lower the second predetermined threshold of determination is negative.
As an optional embodiment, the upper of oxygen-eliminating device is adjusted within the scope of upper limit value and lower limit value according to control variable
The aperture of water regulating valve, with adjust fired power generating unit load may include: in the case where condensate pump is in power frequency working method,
Water regulating valve is in the tune load feedforward amount under power frequency working method and oxygen-eliminating device at condensate pump according to condensate pump
Valve valve limit under power frequency working method, adjusts the aperture of the upper water regulating valve of oxygen-eliminating device, to adjust fired power generating unit load.
Using the above embodiment of the present invention, in the case where condensate pump power frequency operation, 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, adjusts oxygen-eliminating device
The aperture of upper water regulating valve, and then the load of fired power generating unit is adjusted, so as to pass through the upper water regulating valve for adjusting oxygen-eliminating device
Aperture achievees the effect that the load for adjusting fired power generating unit, and according to tune load corresponding under the power frequency working method of condensate pump
Feedforward amount and valve valve limit adjust the aperture of water regulating valve on oxygen-eliminating device, it is ensured that in the process for adjusting 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 within the scope of upper limit value and lower limit value according to control variable
The aperture of water regulating valve, by adjust fired power generating unit load may include: in the case where condensate pump is in a manner of variable frequency work,
Water regulating valve is in the tune load feedforward amount under variable frequency work mode and oxygen-eliminating device at condensate pump according to condensate pump
Valve valve limit under variable frequency work mode, adjusts the aperture of the upper water regulating valve of oxygen-eliminating device, to adjust fired power generating unit load.
It can be according to condensate pump in the case where Condensate Pump Frequency Conversion operation using the above embodiment of the present invention
The valve valve limit for adjusting water regulating valve on load feedforward amount and corresponding oxygen-eliminating device under frequency conversion frequency working method, adjusts oxygen-eliminating device
Upper water regulating valve aperture, and then adjust fired power generating unit load, so as to by adjust oxygen-eliminating device upper water regulating valve
Aperture achieve the effect that the load for adjusting fired power generating unit, and according under the variable frequency work mode of condensate pump it is corresponding adjust it is negative
Lotus feedforward amount and valve valve limit adjust the aperture of water regulating valve on oxygen-eliminating device, it is ensured that in the mistake for adjusting 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.
The present invention also provides a kind of preferred embodiment, the preferred embodiment provides a kind of adaptive condensate pump work
Frequently, the condensed water tune duty control method of conversion system.
In condensate pump in power frequency, the fired power generating unit of variable frequency work mode, implement based on condensate throttling tune load
Energy-saving Coordinated Control, if according to Condensate Pump Frequency Conversion working method implement condensed water tune burden functional, condensing
In the case that water pump switches to power frequency working method, the flowed fluctuation of corresponding condensed water will increase, and cause condenser and deoxygenation
Device water-level fluctuation is violent, can generate the risk that the recirculation door of condensate pump is opened；If according to condensate pump power frequency working method
Implement condensed water tune burden functional, then in the case where condensate pump switches to variable frequency work mode, corresponding condensing water flow
Variation is smaller, so that the energy-saving effect of Condensate Pump Frequency Conversion can not be efficiently used.
The invention proposes a kind of adaptive condensate pump power frequencies, the condensed water tune duty control method of conversion system, should
Method can carry out intelligent weighting processing to condensed water tune load automatically according to condensate pump power frequency, the working method of frequency conversion, simultaneously
Water regulating valve valve limits on adaptive change oxygen-eliminating device, guarantees condensed water tune burden functional in the power frequency and variable frequency work of condensate pump
It can safe and stable, effectively come into operation under mode, improve the economy of fired power generating unit.
1) the intelligence weighting circuit based on condensate pump power frequency, variable frequency work mode.
In the case where fired power generating unit operates normally and condensed water tune burden functional comes into operation, not according to fired power generating unit
Load together, operating condition, obtain setting in the load deviation and oxygen-eliminating device in fired power generating unit between assumed load and actual load
Determine the water level deviation of water level and actual water level, and load deviation and water level deviation are weighted processing, it is negative to obtain condensed water tune
The instruction of lotus feedforward amount.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 condensate pump reaches nominal output in the case that condensate pump is in power frequency working method, to obtain
The varying duty requirement of ideal power grid Automatic Generation Control (AGC), then suitably subtract the instruction of condensed water tune load feedforward amount
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
Power output changes according to the frequency of condensate pump, for the varying duty requirement for obtaining ideal power grid Automatic Generation Control (AGC), then right
Weight of the condensed water tune load feedforward amount instruction superposition based on condensate pump frequency, frequency is low, and weight is referred to increasing feedforward greatly
It enables, then weight is small to reduce feedforward instruction for frequency height, in a manner of the variable frequency work for adapting to condensate pump.
2) water regulating valve valve limits technology on oxygen-eliminating device under adaptive condensate pump power frequency, variable frequency work mode.
It is adaptive to adjust water regulating valve variation range on oxygen-eliminating device according to power frequency, the variable frequency work mode of condensate pump.When
In the case that condensate pump is in power frequency working method, condensate pump power output is higher, according to condensate pump in power frequency working method
Under condensed water minimum discharge determine water regulating valve lower limit on oxygen-eliminating device, while according under unit different load to condensing water flow
Requirement dynamic adjustment oxygen-eliminating device on the water regulating valve upper limit；In the case that condensate pump is in variable frequency work mode, condensed water
The power output of pump changes with its frequency and is changed, and is changed on oxygen-eliminating device on water regulating valve valve according to Condensate Pump Frequency Conversion frequency dynamic
Lower limit guarantees that condensing water flow at different frequencies and main-piping pressure meet the service requirement of current solidifying pump.
Fig. 2 is the condensed water tune load of a kind of adaptive condensate pump power frequency according to an embodiment of the present invention, conversion system
The schematic diagram of control method, as shown in Fig. 2, in implementation process, according to the different operating mode of condensate pump power frequency and frequency conversion,
The weighted volumes of adaptive condensed water tune load feedforward meet condensed water varying duty performance requirement, dynamic adjusts water on oxygen-eliminating device and adjusts
Valve valve upper lower limit value guarantees to coagulate under pump different modes, being capable of safe and stable operation.
In the case where condensate pump is in power frequency working method, intelligence of the condensate pump under power frequency working method is selected
Weighting circuit to condensed water tune load feedforward instruction be weighted processing, while on oxygen-eliminating device water regulating valve valve limit automatically select it is solidifying
Valve limit intelligence computation circuit of the pump in the case where the power frequency working method according to load, condensing water flow is born water, ensure that solidifying
It bears water and adjusts that burden functional is safe and stable under solidifying pump power frequency mode, effectively comes 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 circuit is weighted processing to the instruction of condensed water tune load feedforward, while the automatic choosing of water regulating valve valve limit on oxygen-eliminating device
It selects condensate pump and is in the valve limit intelligence computation circuit in the case where variable frequency work mode according to frequency, ensure that condensed water tune is negative
Lotus function is safe and stable under solidifying pump frequency conversion mode, effectively comes into operation.
The invention proposes a kind of adaptive condensate pump power frequencies, the condensed water tune duty control method of conversion system, should
Method can carry out intelligent weighting processing to condensed water tune load automatically according to condensate pump power frequency, variable frequency work mode, simultaneously
Water regulating valve valve limits on adaptive change oxygen-eliminating device, efficiently solves condensed water tune burden functional during coming into operation,
Condensate pump is difficult to the problem of taking into account under power frequency and the several working ways of frequency conversion, guarantees that condensed water tune burden functional is condensing
It can safe and stable, effectively come into operation under water pump power frequency, the different operating mode of frequency conversion, improve the economy of unit.
To achieve the goals above, according to another aspect of the present invention, the embodiment of the invention also provides a kind of storage Jie
Matter, the storage medium include the program of storage, wherein equipment where controlling the storage medium in described program operation is held
Row fired power generating unit load adjusting method described above.
To achieve the goals above, according to another aspect of the present invention, the embodiment of the invention also provides a kind of processor,
The processor is for running program, wherein described program executes 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 should be noted that
The fired power generating unit weight adjustment device can be used for executing 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 execute 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 an embodiment of the present invention, as shown in figure 3, should
Device may 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 upper limit value and lower limit value；Second acquisition unit 33, it is negative 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 and the condensing water flow of condensate pump is controlled；Computing unit 35,
For the water level deviation of load feedforward amount and oxygen-eliminating device will to be adjusted to carry out summation process, control variable is obtained, wherein control variable is used
The aperture of the upper water regulating valve of oxygen-eliminating device is adjusted in instruction；And adjust unit 37, for according to control variable in upper limit value and
The aperture of the upper water regulating valve of oxygen-eliminating device is adjusted within the scope of lower limit value, 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 upper limit value and lower limit value of valve valve limit in the case of frequency working method, and obtain condensate pump and controlled under different operating mode
The tune load feedforward amount of condensing water flow processed, and the water level deviation of the tune load feedforward amount and oxygen-eliminating device to acquisition carries out at summation
Reason obtains the control variable for being used to indicate the upper water regulating valve aperture for adjusting oxygen-eliminating device, further according to the control variable in oxygen-eliminating device
Upper water regulating valve valve valve limit in limit adjust upper water regulating valve aperture, to adjust fired power generating unit load, to use 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, into
And control condensing water flow, solve condensed water tune duty control method in the related technology can not be compatible with condensate pump power frequency and
The technical issues of variable frequency work pattern, realizes effectively compatible condensate pump power frequency and variable frequency work pattern, and then reaches raising
To the effect of fired power generating unit Load Regulation efficiency and safety.
It should be noted that the first acquisition unit 31 in the embodiment can be used for executing the step in the embodiment of the present application
Rapid S102, the second acquisition unit 33 in the embodiment, can be used for executing the step S104 in the embodiment of the present application, the implementation
Computing unit 35 in example can be used for executing the step S106 in the embodiment of the present application, and the adjusting unit 37 in the embodiment can
For executing the step S108 in the embodiment of the present application.The example and application scenarios that above-mentioned module and corresponding step are realized
It is identical, but it is not limited to the above embodiments disclosure of that.
As an optional embodiment, first acquisition unit may include: the first determining module, in condensate pump
In the case where power frequency working method, the minimum discharge of the condensed water of condensate pump is determined as lower limit value；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 determined as upper limit value；
Second determining module is used in the case where condensate pump is in variable frequency work mode, true according to the working frequency of condensate pump
Determine upper limit value and lower limit value.
As an optional embodiment, second acquisition unit may include: the first adjustment module, in condensate pump
In the case where power frequency working method, load feedforward amount will be adjusted to reduce the first predetermined threshold；Second adjustment module, for solidifying
Pump is born water in the case where the variable frequency work mode, load feedforward amount will be adjusted to increase by the second predetermined threshold, wherein the second predetermined threshold
It is worth related to the working frequency of condensate pump.
As an optional embodiment, adjusting unit may include: to be in the feelings of power frequency working method in condensate pump
Under condition, water regulating valve is in the tune load feedforward amount under power frequency working method and oxygen-eliminating device in condensed water according to condensate pump
Valve valve limit of the pump under power frequency working method, adjusts the aperture of the upper water regulating valve of oxygen-eliminating device, negative to adjust fired power generating unit
Lotus.
As an optional embodiment, adjusting unit may include: to be in the feelings of variable frequency work mode in condensate pump
Under condition, water regulating valve is in the tune load feedforward amount under variable frequency work mode and oxygen-eliminating device in condensed water according to condensate pump
Valve valve limit of the pump under variable frequency work mode, adjusts the aperture of the upper water regulating valve of oxygen-eliminating device, negative to adjust fired power generating unit
Lotus.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of fired power generating unit load adjusting method characterized by comprising
Obtain valve valve limit of the water regulating valve under the working method of different condensate pumps on oxygen-eliminating device, wherein the condensation
The working method of water pump includes power frequency working method and variable frequency work mode, and the valve valve limit includes upper limit value and lower limit value；
Obtain the tune load feedforward amount under the working method of the different condensate pumps, wherein the tune load feedforward amount
It is used to indicate and the condensing water flow of the condensate pump is controlled；
The tune load feedforward amount and the water level deviation of the oxygen-eliminating device are subjected to summation process, obtain control variable, wherein institute
It states control variable and is used to indicate the aperture for adjusting the upper water regulating valve of the oxygen-eliminating device；And
The upper water regulating valve of the oxygen-eliminating device is adjusted within the scope of the upper limit value and the lower limit value according to the control variable
Aperture, to adjust the fired power generating unit load；
Wherein, obtaining valve valve limit of the water regulating valve under the working method of different condensate pumps on oxygen-eliminating device includes:
In the case where the condensate pump is in the power frequency working method, by the minimum stream of the condensed water of the condensate pump
Amount is determined as the lower limit value；The target condensed water 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 determined as the upper limit value；
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 upper limit value and lower limit value.
2. the method according to claim 1, wherein obtaining 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, tune load feedforward amount reduction first is made a reservation for
Threshold value；
In the case where the condensate pump is in the variable frequency work mode, 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.
3. the method according to claim 1, wherein according to the control variable the upper limit value and it is described under
The aperture that the upper water regulating valve of the oxygen-eliminating device is adjusted in limits includes: to adjust the fired power generating unit load
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 on the tune load feedforward amount and the oxygen-eliminating device under mode water regulating valve and is 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.
4. method according to claim 1 or 3, which is characterized in that according to the control variable in the upper limit value and institute
The aperture for adjusting the upper water regulating valve of the oxygen-eliminating device within the scope of lower limit value is stated, includes: to adjust 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 on the tune load feedforward amount and the oxygen-eliminating device under mode water regulating valve and is 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.
5. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein run in described program
When control the storage medium where equipment perform claim require any one of 1 to 4 described in fired power generating unit Load Regulation side
Method.
6. a kind of fired power generating unit weight adjustment device characterized by comprising
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
Upper limit value and lower limit value；
Second acquisition unit, for obtaining the tune load feedforward amount under the working method of the different condensate pumps, wherein
The tune load feedforward amount, which is used to indicate, controls the condensing water flow of the condensate pump；
Computing unit is controlled for the water level deviation of the tune load feedforward amount and the oxygen-eliminating device to be carried out summation process
Variable processed, wherein the control variable is used to indicate the aperture for adjusting the upper water regulating valve of the oxygen-eliminating device；And
Unit is adjusted, for adjusting the oxygen-eliminating device within the scope of the upper limit value and the lower limit value according to the control variable
Upper water regulating valve aperture, to adjust the fired power generating unit load；
Wherein, the first acquisition unit includes:
First determining module is used in the case where the condensate pump is in the power frequency working method, by the condensed water
The minimum discharge of the condensed water of pump is determined as the lower limit value；It is 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 determined as the upper limit value；
Second determining module is used in the case where the condensate pump is in the variable frequency work mode, according to the condensation
The working frequency of water pump determines the upper limit value and lower limit value.
7. device according to claim 6, which is characterized in that the second acquisition unit includes:
First adjustment module is used in the case where the condensate pump is in the power frequency working method, by the tune load
Feedforward amount reduces the first predetermined threshold；
Second adjustment module is used in the case where the condensate pump is in the variable frequency work mode, 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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| CN109149654A (en) * | 2018-09-13 | 2019-01-04 | 国网湖南省电力有限公司 | Determine trans-regional water power-wind power direct current transmission of electricity Hydropower Unit regulating power method |
| CN109739273B (en) * | 2019-01-07 | 2021-10-12 | 阜阳华润电力有限公司 | Power plant water system and power plant water system control method |
| CN109857033B (en) * | 2019-02-28 | 2020-10-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Condensate throttling switching control method and device and computer equipment |
| CN110107489B (en) * | 2019-04-19 | 2020-09-18 | 中国神华能源股份有限公司 | Control method, system and unit for condensate water pump |
| CN110347201B (en) * | 2019-08-12 | 2020-10-30 | 江苏方天电力技术有限公司 | One-way accurate control condensate auxiliary frequency modulation control method and system |
| CN111983920B (en) * | 2020-08-31 | 2022-06-10 | 上海明华电力科技有限公司 | Safe and economic coordination control method for deep peak shaving of thermal power generating unit |
| 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 |
| CN112361324B (en) * | 2020-11-16 | 2022-06-14 | 华能莱芜发电有限公司 | Energy-saving and consumption-reducing method for condensate pump of double reheating unit |
| CN112653159B (en) * | 2020-12-16 | 2023-08-15 | 润电能源科学技术有限公司 | Condensate water throttling auxiliary frequency modulation control method, device, equipment and storage medium |
| 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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| JPS60179195A (en) * | 1984-02-24 | 1985-09-13 | Toyota Motor Corp | Method for controlling do in aeration vessel to fixed value by feedforward control |
| CN102629131A (en) * | 2012-04-18 | 2012-08-08 | 国电科学技术研究院 | Coordinative control method for pulse-mode regulation of condensate flow to participate in frequency modulation |
| CN103217946A (en) * | 2013-03-07 | 2013-07-24 | 上海外高桥第二发电有限责任公司 | Coordination variable load control method based on condensate pump frequency changer set |
| CN103713569B (en) * | 2013-12-26 | 2016-04-27 | 西安西热控制技术有限公司 | A kind of fired power generating unit optimization of sliding pressure regulating system and control method |
| CN104714526B (en) * | 2015-01-08 | 2017-10-10 | 华北电力大学 | The load control system estimated and method are adjusted based on condensate throttling |
| CN104932450B (en) * | 2015-04-15 | 2017-11-28 | 华北电力大学 | A kind of fired power generating unit control method for coordinating based on condensate throttling |
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