CN107806625A - The system that a kind of boiler load adjustment combines outside peak-frequency regulation equipment - Google Patents
The system that a kind of boiler load adjustment combines outside peak-frequency regulation equipment Download PDFInfo
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- CN107806625A CN107806625A CN201711167565.9A CN201711167565A CN107806625A CN 107806625 A CN107806625 A CN 107806625A CN 201711167565 A CN201711167565 A CN 201711167565A CN 107806625 A CN107806625 A CN 107806625A
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- 230000033228 biological regulation Effects 0.000 title claims abstract description 174
- 238000002485 combustion reaction Methods 0.000 claims description 36
- 239000003245 coal Substances 0.000 claims description 31
- 239000000446 fuel Substances 0.000 claims description 26
- 238000005516 engineering process Methods 0.000 claims description 24
- 239000003921 oil Substances 0.000 claims description 24
- 230000006835 compression Effects 0.000 claims description 22
- 238000007906 compression Methods 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 230000003247 decreasing effect Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 11
- 230000009467 reduction Effects 0.000 claims description 11
- 238000005338 heat storage Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 8
- 238000002271 resection Methods 0.000 claims description 7
- 239000002817 coal dust Substances 0.000 claims description 6
- 240000002853 Nelumbo nucifera Species 0.000 claims description 4
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 4
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000012782 phase change material Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/18—Applications of computers to steam boiler control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
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- Mechanical Engineering (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses the system that a kind of adjustment of boiler load is combined with outside peak-frequency regulation equipment.The system includes：Power plant's collection control peak-frequency regulation control module, boiler load adjusting module and outside peak-frequency regulation equipment.This system can not only strengthen the load shedding ability of boiler in itself, and utilize outside peak-frequency regulation equipment, unit can be caused to carry out depth peak-frequency regulation operation at any time throughout the year, so as to greatly increase the flexibility of fired power generating unit, be widely used in cogeneration units or pure condensate unit.
Description
Technical field
The present invention relates to thermal power generating technology field, more particularly to a kind of boiler load adjustment combines outside peak-frequency regulation and set
Standby system and method.
Background technology
It is known that electric energy can not be stored, therefore user needs how many electricity, and power plant just needs synchronously to send more
Few electricity, so will not just cause the waste of the energy.But the demand electric load for being that typically in each power plant in power system be
Constantly change, in order to maintain active power balance, keep system frequency stabilization, it is necessary to which the department that generates electricity accordingly changes hair
For the generated energy of motor to adapt to the change of power load, this is just called peak-frequency regulation.
It is rich in Chinese three northern areas of China electricity market capacity, combustion engine, water-storage etc. can peak regulation variable frequency power source it is rare, power network
It is particularly thorny between peak-frequency regulation and fired power generating unit flexibility, the energy of the new energy such as power network consumption wind-powered electricity generation, photoelectricity, water power and nuclear power
Power deficiency, abandon wind, abandon light, abandon water and abandon nuclear phenomenon it is serious.
Cogeneration units " electricity determining by heat " mode is run in the prior art, and winter causes thermal power plant unit due to coupled thermomechanics
Peak-frequency regulation ability is only 10% or so.As Bureau of Energy is in the reality of the 22 thermoelectricity flexibility demonstrative projects carried out in 2016
Apply, following winter peak-frequency regulation can obtain a certain degree of alleviation.But in summer in addition to unit load down or shutdown
How peak-frequency regulation, particularly increase summer peak-frequency regulation while ensure thermal power plant economy, be pendulum in numerous thermal power plants
A problem in front.
The content of the invention
The present invention is by setting power plant's collection control peak-frequency regulation control module to obtain demand electric load of the current electric grid to power plant
Data, and the demand electric load data based on power plant assign increase load instruction to boiler load adjusting module, in boiler load
When being reduced to certain value, outside peak-frequency regulation equipment is put into, reaches the maximum depth peak-frequency regulation amplitude of unit.Utilize the present invention
System, unit depth peak-frequency regulation can be realized with least cost, and can reach random time carry out power peak regulation tune
The effect of frequency.
According to embodiments of the present invention is on one side
The system that a kind of boiler load adjustment combines outside peak-frequency regulation equipment, the system include：
Power plant's collection control peak-frequency regulation control module, instructs according to the peak-frequency regulation of power network, peak regulation is assigned to the equipment in factory
Frequency modulation instructs；
Boiler load adjusting module, control peak-frequency regulation control module is collected according to power plant and assigns boiler increasing and decreasing load operational order
Adjust unit increasing and decreasing load；
Outside peak-frequency regulation equipment, control peak-frequency regulation control module is collected according to power plant and assigns outside peak-frequency regulation equipment increase and decrease
Load operation instruction regulation unit increasing and decreasing load.
Further, when power plant collects control peak-frequency regulation control module and assigns load shedding instruction, boiler load shedding or outer is passed through
Portion's peak-frequency regulation equipment increases its power consumption load, to reach the purpose of unit load shedding.
Further, when power plant collects control peak-frequency regulation control module and assigns load shedding instruction, first by boiler load shedding, when
When boiler load shedding is to preset value X, outside peak-frequency regulation equipment is put into, remaining unit generation amount is supplied into outside peak-frequency regulation
Equipment, to reach the purpose of unit load shedding.
Further, when power plant collects control peak-frequency regulation control module and assigns load shedding instruction, first by boiler load shedding, when
When boiler load shedding is to preset value X, boiler low load stable combustion technical equipment is put into, further unit load is reduced to underload
The lower limit Y surely fired, then outside peak-frequency regulation equipment is put into, remaining unit generation amount is supplied into outside peak-frequency regulation equipment,
So as to realize that external electricity volume is minimum.
Further, power plant collect control peak-frequency regulation control module assign increase load instruction when, by boiler increase fuel,
Steam turbine steam pitch increase aperture, reduce draw gas or Partial Resection height plus, condensate throttling or reduce outside peak-frequency regulation
Any one or a few combination in the power consumption of equipment increases unit generation load.
Further, described boiler low load stable combustion technical equipment, including underload oxygen-enriched combustion technology equipment, underload
Coal pulverizer dynamic oil pressure cntrol technical equipment, underload throw oily stable combustion technology equipment, underload dosing gas combustion supporting technology equipment, low
Any one in the micro- oily stable combustion technology equipment of load plasma, underload Gasifying Small Oil Gun technical equipment or its combination.
Further, described underload oxygen-enriched combustion technology equipment include oxygen and fuel delivery means, oxygen-enriched burner,
Automatic control system, the fuel in the oxygen and fuel delivery means is fuel oil, combustion gas, any one in coal dust.
Further, described underload coal pulverizer dynamic oil pressure cntrol technical equipment includes dynamic oil pressure actuator, oil
Control module, coal mill control module are pressed, the fuel feed system of unit is assigned by power plant's collection control peak-frequency regulation module and subtracted
Load instruction, unit fuel feed system assign the output of coal pulverizer energy to coal mill control module and reduce instruction, coal pulverizer control
Molding block operates dynamic oil pressure actuator by hydraulic control module, by changing the control oil pressure of coal pulverizer pot mill, from
And realize the reduction of coal pulverizer coal dust energy output.
According to some embodiments of the present invention, the described outside peak-frequency regulation of power plant's collection control peak-frequency regulation control module control
Equipment puts into operation in a middle power consumption load value all the time, when grid requirements power plant reduces online generation load, power plant's collection control tune
The described outside peak-frequency regulation facility increase power consumption load value of peak frequency modulation control module control；Surfed the Net when grid requirements power plant increases
During generation load, power plant's collection control peak-frequency regulation control module control outside peak-frequency regulation facility reduces power consumption load value, with
Meet the two-way peak-frequency regulation demand of increasing and decreasing load.
Further, outside described outside peak-frequency regulation equipment refers to unit equipment in itself, the storage that is arranged in power plant
Any one in battery, electric boiler, electrolytic hydrogen production groove, electric compression heat pump, electric compression refigerating machine group or combination.
Further, the electric boiler is solid heat storage electric boiler, electrode boiler, electric heating tube boiler, high temperature heat conductive oil electricity
Any one or more combination in boiler, phase-change material electricity heat storage boiler, electromagnetic boiler.
Further, the electrolytic hydrogen production groove is that alkaline aqueous solution electrolytic cell, solid polymer electrolytic hydrogen manufacturing groove or high temperature are consolidated
Any one in oxide body electrolytic cell.
Further, the electric compression heat pump is the electric compression heat pump of electric power plant circulating water UTILIZATION OF VESIDUAL HEAT IN, or the electricity of air-source
Any one in compressing hot pump, or river source electric compression heat pump or river water source electric compression heat pump.
Further, described electric boiler or the hot water or steam of electric compression heat pump production, heat supply is carried out for heating network,
Or heat recovery is carried out for power plant thermal system, or used for industrial steam.
Present invention also offers the peak-frequency regulation method that a kind of adjustment of boiler load is combined with outside peak-frequency regulation equipment, institute
The method of stating includes：
Step S101：Power plant's collection control peak-frequency regulation module obtains demand electric load data of the current electric grid to power plant；
Step S102：Power plant's collection control peak-frequency regulation module is by current electric grid to the demand electric load data of power plant and power plant
Real-time generated energy is compared；
Step S103：Power plant's collection control peak-frequency regulation module judges that power plant needs to increase generation load still according to comparison result
Reduce generation load；If desired generation load is reduced, then performs step S104；If desired increase generation load, then perform step
S109；
Step S104：Power plant's collection control peak-frequency regulation module sends the instruction of boiler load shedding, pot to boiler load adjusting module
Stove carries out load shedding operation；
Step S105：Judge whether boiler load is less than preset value X, if it is, step S106 is performed, if it is not, then
Perform step S110；
Step S106：Boiler low load stable combustion technical equipment is put into, boiler load is further reduced；
Step S107：Judge whether boiler load reaches the lower limit Y of boiler low load stable combustion, if it is, performing step
Rapid S108, if it is not, then performing step S111；
Step S108:Put into peak-frequency regulation equipment outside power plant；
Step S109：Unit increases fuel by boiler, steam turbine steam pitch increases aperture, reduction is drawn gas or Partial Resection
Height plus, condensate throttling or reduce any one or a few combination in the power consumption of outside peak-frequency regulation equipment, increase
Unit generation load；
Step S110：By reduce coal pulverizer number of units or dynamic hydraulic control module reduce the output of coal pulverizer energy reduce come
Reach boiler load shedding；
Step S111：Boiler load is adjusted by boiler low load stable combustion technology, reaches the lower limit of low-load combustion-stabilizing
Value Y.
The peak-frequency regulation system and method for the present invention, by setting power plant's collection control peak-frequency regulation control module, boiler to bear
Lotus adjusting module and outside peak-frequency regulation device, so as to reach the effect of peak-frequency regulation.Can be according to the present invention according to power network need
The peak-frequency regulation depth wanted, boiler or outside peak-frequency regulation equipment are selected, it is necessary to during larger depth peak-frequency regulation, can be selected
Both combine；Importantly, boiler low load stable combustion technology is combined with outside peak-frequency regulation equipment so that whole unit exists
On the premise of meeting station service and the power supply of outside peak-frequency regulation equipment, external electricity volume is zero, accomplishes that depth capacity peak regulation is adjusted
Frequency amplitude.This system can not only strengthen the load shedding ability of boiler in itself, and utilize outside peak-frequency regulation equipment, can cause
Unit can carry out depth peak-frequency regulation operation at any time throughout the year, so as to greatly increase the flexibility of fired power generating unit, extensively
Suitable for cogeneration units or pure condensate unit.
Brief description of the drawings
Fig. 1 is that a kind of boiler load adjustment that first embodiment of the invention provides is with what outside peak-frequency regulation equipment was combined
The structural representation of system；
Fig. 2 is the tune that a kind of boiler load adjustment that first embodiment of the invention provides is combined with outside peak-frequency regulation equipment
The flow chart of peak frequency modulation method；
Fig. 3 is the tune that a kind of boiler load adjustment that second embodiment of the invention provides is combined with outside peak-frequency regulation equipment
The flow chart of peak frequency modulation method；
Fig. 4 is that a kind of boiler load adjustment that third embodiment of the invention provides is with what outside peak-frequency regulation equipment was combined
The structural representation of system；
Fig. 5 is that a kind of boiler load adjustment that fourth embodiment of the invention provides is with what outside peak-frequency regulation equipment was combined
The structural representation of system；
Reference：
1 it is boiler, 2 be steam turbine, 3 be generator, 4 be power network, 5 be condenser, 6 be oxygen-eliminating device, 7 is that outside peak regulation is adjusted
Frequency equipment, 8 be power plant thermal system, 9 be heat-accumulator tank or heating network, 10 be Hydrogen Energy output storage, 11 be cold output and storage
Deposit, 12 be power plant's collection control peak-frequency regulation control module, 13 boiler load adjusting modules.
Embodiment
To make the object, technical solutions and advantages of the present invention of greater clarity, with reference to embodiment and join
According to accompanying drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair
Bright scope.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring this
The concept of invention.
Embodiment one：
As shown in Figure 1 and Figure 2, the system that a kind of boiler load adjustment is combined with outside peak-frequency regulation equipment includes：Power plant collects
Control peak-frequency regulation control module 12, boiler load adjusting module 13 and outside peak-frequency regulation equipment 7.
Power plant's collection control peak-frequency regulation control module 12, instructs according to the peak-frequency regulation of power network, tune is assigned to the equipment in factory
Peak frequency modulation instruction；
Boiler load adjusting module 13, the operation of boiler increasing and decreasing load is assigned according to power plant's collection control peak-frequency regulation control module and referred to
Order regulation unit increasing and decreasing load；
Outside peak-frequency regulation equipment 7, control peak-frequency regulation control module is collected according to power plant and assigns outside peak-frequency regulation equipment increasing
Load shedding operational order adjusts unit increasing and decreasing load.
Specifically, when power network power consumption is relatively low, it is necessary to which unit carries out load shedding adjustment.Collect control peak-frequency regulation control in power plant
When molding block 12 assigns load shedding instruction, boiler load or outside peak-frequency regulation can be reduced by boiler load adjusting module 13
Equipment 7 increases its power consumption load, to reach the purpose of unit load shedding.Specifically, fuel, Huo Zhezeng can be reduced by boiler
Add the power consumption of outside peak-frequency regulation equipment so that unit load is reduced, and power network delivery is reduced.
When power network power consumption is relatively low, it is necessary to which unit carries out load shedding adjustment, if single pass boiler or outside tune
, it is necessary to which both are used in combination when peak frequency modulation equipment 7 can not meet to require.
Further, because the load adjustment of boiler of power plant is limited in one's ability, Steady Burning Technique of Low Load can be traveled further into and entered
Row unit load shedding adjusts.As shown in Fig. 2 specifically, collecting control peak-frequency regulation control module 12 in power plant assigns load shedding instruction
When, first by boiler load shedding, when boiler load shedding is to preset value X, boiler low load stable combustion technical equipment is put into, further
Unit load is reduced to the lower limit Y of low-load combustion-stabilizing, then put into outside peak-frequency regulation equipment 7, by remaining unit generation
The outside peak-frequency regulation equipment 7 of amount supply, so as to realize that external electricity volume is minimum.
Further, when power network power consumption is higher, it is necessary to which unit carries out increase load adjustment, in power plant's collection control peak-frequency regulation
Control module 12 assign increase load instruction when, by boiler increase fuel, steam turbine steam pitch increase aperture, reduce draw gas or
Partial Resection height plus, condensate throttling or reduce any one or a few in the power consumption of outside peak-frequency regulation equipment 7
Combine to increase unit generation load.
Preferably, described Steady Burning Technique of Low Load equipment, including boiler at low load oxygen-enriched combustion technology equipment, underload
Coal pulverizer dynamic oil pressure cntrol technical equipment, underload throw oily stable combustion technology equipment, underload dosing gas combustion supporting technology equipment, low
Any one in the micro- oily stable combustion technology equipment of load plasma, underload Gasifying Small Oil Gun technical equipment or its combination.
Preferably, described underload oxygen-enriched combustion system includes oxygen and fuel delivery means, oxygen-enriched burner, automatic
Control system, the fuel in the oxygen and fuel delivery means is fuel oil, combustion gas, any one in coal dust.Specifically, root
Collect control peak-frequency regulation module 12 according to power plant and assign the control of load shedding instruction, oxygen and fuel delivery means in automatic control system
Lower regulation oxygen and fuel conveying, and then oxygen-enriched burner is controlled, realize that energy output is reduced.
Preferably, described underload coal pulverizer dynamic oil pressure control system includes dynamic oil pressure actuator, oil pressure control
Molding block, coal mill control module.Control peak-frequency regulation module 12 is collected by power plant Reduction of Students' Study Load is assigned to the fuel feed system of unit
Lotus instructs, and unit fuel feed system assigns the output of coal pulverizer energy to coal mill control module and reduces instruction, coal mill control
Module operates dynamic oil pressure actuator by hydraulic control module, by changing the control oil pressure of coal pulverizer pot mill, so as to
Realize the reduction of coal pulverizer coal dust energy output.
Specifically, power plant's collection control peak-frequency regulation control module 12 controls described outside peak-frequency regulation putting equipment in service at one
Middle power consumption load value, when grid requirements power plant reduces online generation load, power plant's collection control peak-frequency regulation control module control
Described outside peak-frequency regulation facility increase power consumption load value；When grid requirements power plant increases online generation load, power plant's collection
Control the peak-frequency regulation control module control outside peak-frequency regulation facility and reduce power consumption load value；To meet the two-way of increasing and decreasing load
Peak-frequency regulation demand.
Preferably, outside described outside peak-frequency regulation equipment refers to unit equipment in itself, the electricity that is arranged in power plant
Any one in boiler, electrolytic hydrogen production groove, electric compression heat pump, electric compression refigerating machine group or combination, these equipment can be by richness
Remaining electric energy changes into heat energy, Hydrogen Energy or cold energy and is stored and externally exported.Or by storage when electric energy is needed
Energy is converted into electrical energy transportation to unit, realizes the peak-frequency regulation of power network.
Preferably, the electric boiler is solid heat storage electric boiler, electrode boiler and accumulation of heat facility, electric heating tube boiler and storage
Any one or more combination in hot facility, high temperature heat conductive oil thermal storage electric boiler, phase-change material electricity heat storage boiler.
Preferably, the electrolytic hydrogen production groove can be alkaline aqueous solution electrolytic cell, solid polymer electrolytic hydrogen manufacturing groove or height
Any one in temperature solid-oxide electrolytic cell, and then carry out Hydrogen Energy output storage 10.
Preferably, the electric compression heat pump can be the electric compression heat pump or sky of electric power plant circulating water UTILIZATION OF VESIDUAL HEAT IN
The electric compression heat pump of source of the gas, river source or river water source electric compression heat pump are can also be, can be used for cold water output storage 11.
Preferably, the hot water or steam of described electric heat storage boiler or electric compression heat pump production, both can be used for heat-accumulator tank
Or heating network 9 carries out heat supply, it can be used for power plant thermal system 8 and carry out heat recovery, if steam parameter load is industrial
Steam needs, it can be used for externally supplying industrial steam.
A kind of boiler load adjustment of other side according to embodiments of the present invention is combined with outside peak-frequency regulation equipment
Peak-frequency regulation method, referring to Fig. 2, a kind of boiler load that Fig. 2, which is first embodiment of the invention, to be provided adjusts and outside peak regulation
The flow chart for the peak-frequency regulation method that frequency modulation equipment combines.
Methods described includes：
Step S101：Power plant's collection control peak-frequency regulation module obtains demand electric load data of the current electric grid to power plant；
Step S102：Power plant's collection control peak-frequency regulation module is by current electric grid to the demand electric load data of power plant and power plant
Real-time generated energy is compared；
Step S103：Power plant's collection control peak-frequency regulation module judges that power plant needs to increase generation load still according to comparison result
Reduce generation load；If desired generation load is reduced, then performs step S104；If desired increase generation load, then perform step
S109；
Step S104：Power plant's collection control peak-frequency regulation module sends the instruction of boiler load shedding, pot to boiler load adjusting module
Stove carries out load shedding operation；
Step S105：Judge whether boiler load is less than preset value X, if it is, step S106 is performed, if it is not, then
Perform step S110；
Step S106：Boiler low load stable combustion technical equipment is put into, boiler load is further reduced；
Step S107：Judge whether boiler load reaches the lower limit Y of boiler low load stable combustion, if it is, performing step
Rapid S108, if it is not, then performing step S111；
Step S108:Put into peak-frequency regulation equipment outside power plant；
Step S109：Unit increases fuel by boiler, steam turbine steam pitch increases aperture, reduction is drawn gas or Partial Resection
Height plus, condensate throttling or reduce any one or a few combination in the power consumption of outside peak-frequency regulation equipment, increase
Unit generation load；
Step S110：By reduce coal pulverizer number of units or dynamic hydraulic control module reduce the output of coal pulverizer energy reduce come
Reach boiler load shedding；
Step S111：Boiler load is adjusted by boiler low load stable combustion technology, reaches the lower limit of low-load combustion-stabilizing
Value.
When boiler load shedding operates, boiler load shedding is operated to preset value X, wherein preset value X according to be actually needed into
Row setting, such as the 50%-60% of boiler total load can be taken, above-mentioned numerical value only enumerates certain scope, but the present invention is unlimited
In above range.
After Steady Burning Technique of Low Load equipment is put into, wherein the lower limit Y of boiler low load stable combustion can be according to actual need
Set, such as the 15%-45% of boiler total load, preferably 15%-30% can be taken.Above-mentioned numerical value is only enumerated necessarily
Scope, but the invention is not restricted to above range.
Wherein X, Y magnitude relationship meet：X ＞ Y.
The power peak regulation frequency modulation system and its method of the present invention, by setting power plant's collection control peak-frequency regulation control module, pot
Stove load adjustment module and outside peak-frequency regulation device, so as to reach the depth peak-frequency regulation effect of least cost.According to power plant
Collection control peak-frequency regulation control module assigns the load of boiler increasing and decreasing load operational order regulation unit；Operated in boiler load shedding
When, when boiler load shedding is to preset value X, boiler low load stable combustion technical equipment is put into, is further reduced to power plant load
The lower limit Y of low-load combustion-stabilizing；Then outside peak-frequency regulation equipment is put into again so that whole unit is meeting station service and outside
On the premise of peak-frequency regulation equipment is powered, external electricity volume is zero, accomplishes depth capacity peak-frequency regulation amplitude.This system is not only
It can strengthen the load shedding ability of boiler in itself, and utilize outside peak-frequency regulation equipment, can cause unit throughout the year can be with
Depth peak-frequency regulation operation is carried out at any time, so as to greatly increase the flexibility of fired power generating unit, is widely used in cogeneration of heat and power machine
Group or pure condensate unit.
Embodiment two：
As different from Example 1, when power network power consumption is relatively low, it is necessary to which unit progress load shedding adjustment, passes through boiler
It is used in combination with outside peak-frequency regulation equipment, does not introduce Steady Burning Technique of Low Load.As indicated at 3, when power plant collects control peak-frequency regulation
When control module assigns load shedding instruction, first by boiler load shedding, when boiler load shedding is to preset value X, outside adjust is put into
Peak frequency modulation equipment, remaining unit generation amount is supplied into outside peak-frequency regulation equipment, to reach the purpose of unit load shedding.
Specifically, methods described includes：
Step S101：Power plant's collection control peak-frequency regulation module obtains demand electric load data of the current electric grid to power plant；
Step S102：Power plant's collection control peak-frequency regulation module is by current electric grid to the demand electric load data of power plant and power plant
Real-time generated energy is compared；
Step S103：Power plant's collection control peak-frequency regulation module judges that power plant needs to increase generation load still according to comparison result
Reduce generation load；If desired generation load is reduced, then performs step S104；If desired increase generation load, then perform step
S109；
Step S104：Power plant's collection control peak-frequency regulation module sends the instruction of boiler load shedding, pot to boiler load adjusting module
Stove carries out load shedding operation；
Step S105：Judge whether boiler load is less than preset value X, if it is, step S108 is performed, if it is not, then
Perform step S110；
Step S108:Put into peak-frequency regulation equipment outside power plant；
Step S109：Unit increases aperture by steam turbine steam pitch, reduction is drawn gas or Partial Resection height adds, condensate
Any one or a few combination in throttling, boiler increase fuel, increases unit generation load；
Step S110：By reduce coal pulverizer number of units or dynamic hydraulic control module reduce the output of coal pulverizer energy reduce come
Reach boiler load shedding.
Specifically, when boiler load shedding operates, boiler load shedding is operated to preset value X, and wherein preset value X is according to reality
Need to be set, such as the 50%-60% of boiler total load can be taken, above-mentioned numerical value only enumerates certain scope, but this hair
It is bright to be not limited to above range.
Embodiment three
Referring to Fig. 4, a kind of boiler load adjustment that Fig. 4, which is third embodiment of the invention, to be provided is set with outside peak-frequency regulation
The structural representation of the standby system combined.The present embodiment is similar with the basic framework of embodiment one, and difference is that power plant's depth is adjusted
Peak frequency modulation fully relies on boiler load adjusting module, steady using foregoing various underloads particularly in the underrun stage
Combustion measure is carried out, and the depth peak-frequency regulation for not having other outside peak-frequency regulation equipment beyond unit to participate in power plant completely；
Example IV：
Referring to Fig. 5, a kind of boiler load adjustment that Fig. 5, which is fourth embodiment of the invention, to be provided is set with outside peak-frequency regulation
The structural representation of the standby system combined.The present embodiment is similar with the basic framework of embodiment one, and difference is to be only applicable to machine
The scene of group load shedding, the load down before boiler minimum load limit value reduces fuel quantity by boiler and oxygen-enriched combustion technology enters
Row low-load combustion-stabilizing, when boiler reaches minimum steady combustion load limit, then input electric boiler is adjusted to carry out further depth peak regulation
Frequently, final to realize under conditions of station service and electric boiler power supply is ensured, the external electricity volume of whole power plant is zero, wherein
Electric boiler can be solid heat storage electric boiler, electrode boiler, electric heating tube boiler, high temperature heat conductive oil electric boiler, phase-change material electricity
Any one or more combination in heat storage boiler, electromagnetic boiler.
It should be appreciated that the above-mentioned embodiment of the present invention is used only for exemplary illustration or explains the present invention's
Principle, without being construed as limiting the invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent substitution, improvement etc., should be included in the scope of the protection.In addition, appended claims purport of the present invention
Covering the whole changes fallen into scope and border or this scope and the equivalents on border and repairing
Change example.
Claims (15)
1. the system that a kind of boiler load adjustment combines outside peak-frequency regulation equipment, it is characterised in that the system includes：
Power plant's collection control peak-frequency regulation control module, instructs according to the peak-frequency regulation of power network, peak-frequency regulation is assigned to the equipment in factory
Instruction；
Boiler load adjusting module, control peak-frequency regulation control module is collected according to power plant and assigns the regulation of boiler increasing and decreasing load operational order
Unit increasing and decreasing load；
Outside peak-frequency regulation equipment, control peak-frequency regulation control module is collected according to power plant and assigns outside peak-frequency regulation equipment increasing and decreasing load
Operational order adjusts unit increasing and decreasing load.
2. system according to claim 1, it is characterised in that collect control peak-frequency regulation control module in power plant and assign load shedding
During instruction, its power consumption load is increased by boiler load shedding or outside peak-frequency regulation equipment, to reach the purpose of unit load shedding.
3. system according to claim 1, it is characterised in that collect control peak-frequency regulation control module in power plant and assign load shedding
During instruction, first by boiler load shedding, when boiler load shedding is to preset value X, outside peak-frequency regulation equipment is put into, will be remaining
The outside peak-frequency regulation equipment of unit generation amount supply, to reach the purpose of unit load shedding.
4. system according to claim 3, it is characterised in that collect control peak-frequency regulation control module in power plant and assign load shedding
During instruction, first by boiler load shedding, when boiler load shedding is to preset value X, boiler low load stable combustion technical equipment is put into, is entered
One step makes unit load be reduced to the lower limit Y of low-load combustion-stabilizing, then puts into outside peak-frequency regulation equipment, and remaining unit is sent out
The outside peak-frequency regulation equipment of electricity supply, so as to realize that external electricity volume is minimum.
5. system according to claim 1, it is characterised in that it is negative to assign increase in power plant's collection control peak-frequency regulation control module
During lotus instruction, fuel is increased by boiler, steam turbine steam pitch increases aperture, reduction is drawn gas or Partial Resection height adds, condenses
Any one or a few combination that water throttled or reduced in the power consumption of outside peak-frequency regulation equipment is born to increase unit generation
Lotus.
6. system according to claim 4, it is characterised in that described boiler low load stable combustion technical equipment, including it is low
Load oxygen-enriched combustion technology equipment, underload coal pulverizer dynamic oil pressure cntrol technical equipment, underload throw oily stable combustion technology equipment,
The micro- oily stable combustion technology equipment of underload dosing gas combustion supporting technology equipment, underload plasma, underload Gasifying Small Oil Gun technology are set
Any one in standby or its combination.
7. system according to claim 6, it is characterised in that described underload oxygen-enriched combustion technology equipment includes oxygen
With fuel delivery means, oxygen-enriched burner, automatic control system, the fuel in the oxygen and fuel delivery means is fuel oil,
Any one in combustion gas, coal dust.
8. system according to claim 6, it is characterised in that described underload coal pulverizer dynamic oil pressure cntrol technology is set
It is standby to include dynamic oil pressure actuator, hydraulic control module, coal mill control module, control peak-frequency regulation module pair is collected by power plant
The fuel feed system of unit assigns load shedding instruction, and unit fuel feed system assigns coal-grinding function to coal mill control module
Amount output reduces instruction, and coal mill control module operates dynamic oil pressure actuator by hydraulic control module, is ground by changing
The control oil pressure of coal machine pot mill, so as to realize the reduction of coal pulverizer coal dust energy output.
9. system according to claim 1, it is characterised in that：
The described outside peak-frequency regulation equipment of power plant's collection control peak-frequency regulation control module control puts into operation in a middle power consumption all the time
Load value, it is outer described in power plant's collection control peak-frequency regulation control module control when grid requirements power plant reduction online generation load
Portion's peak-frequency regulation facility increase power consumption load value；When grid requirements power plant increases online generation load, power plant's collection control peak regulation is adjusted
The frequency control module control outside peak-frequency regulation facility reduces power consumption load value, to meet the two-way peak-frequency regulation of increasing and decreasing load
Demand.
10. system according to claim 1, it is characterised in that：Described outside peak-frequency regulation equipment refers to unit equipment
Outside itself, it is arranged in the battery in power plant, electric boiler, electrolytic hydrogen production groove, electric compression heat pump, electric compression refigerating machine group
Any one or combination.
11. system according to claim 10, it is characterised in that：The electric boiler is solid heat storage electric boiler, electrode pot
In stove, electric heating tube boiler, high temperature heat conductive oil electric boiler, phase-change material electricity heat storage boiler, electromagnetic boiler any one or it is more
Kind combination.
12. system according to claim 10, it is characterised in that：The electrolytic hydrogen production groove be alkaline aqueous solution electrolytic cell,
Any one in solid polymer electrolytic hydrogen manufacturing groove or high-temperature solid oxide electrolytic cell.
13. system according to claim 10, it is characterised in that：The electric compression heat pump is electric power plant circulating water UTILIZATION OF VESIDUAL HEAT IN
Electric compression heat pump, or the electric compression heat pump of air-source, or river source electric compression heat pump or river water source electric compression heat pump
In any one.
14. system according to claim 10, it is characterised in that：Described electric boiler or the hot water of electric compression heat pump production
Or steam, heat supply is carried out for heating network, or heat recovery is carried out for power plant thermal system, or make for industrial steam
With.
15. a kind of peak-frequency regulation method that boiler load adjustment is combined with outside peak-frequency regulation equipment, it is characterised in that：The side
Method includes：
Step S101：Power plant's collection control peak-frequency regulation module obtains demand electric load data of the current electric grid to power plant；
Step S102：Power plant's collection control peak-frequency regulation module is by current electric grid to the real-time of the demand electric load data of power plant and power plant
Generated energy is compared；
Step S103：Power plant's collection control peak-frequency regulation module judges that power plant needs increase generation load still to reduce according to comparison result
Generation load；If desired generation load is reduced, then performs step S104；If desired increase generation load, then perform step S109；
Step S104：Power plant's collection control peak-frequency regulation module sends the instruction of boiler load shedding to boiler load adjusting module, and boiler enters
Row load shedding operates；
Step S105：Judge whether boiler load is less than preset value X, if it is, step S106 is performed, if it is not, then performing
Step S110；
Step S106：Boiler low load stable combustion technical equipment is put into, boiler load is further reduced；
Step S107：Judge whether boiler load reaches the lower limit Y of boiler low load stable combustion, if it is, performing step
S108, if it is not, then performing step S111；
Step S108:Put into peak-frequency regulation equipment outside power plant；
Step S109：Unit increases fuel by boiler, steam turbine steam pitch increases aperture, reduction is drawn gas or Partial Resection height
Add, any one or a few combination outside condensate throttling or reduction in the power consumption of peak-frequency regulation equipment, increase unit
Generation load；
Step S110：Reduce the output of coal pulverizer energy by reducing coal pulverizer number of units or dynamic hydraulic control module and reduce to reach
Boiler load shedding；
Step S111：Boiler load is adjusted by boiler low load stable combustion technology, reaches the lower limit Y of low-load combustion-stabilizing.
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| CN201711167565.9A CN107806625A (en) | 2017-11-21 | 2017-11-21 | The system that a kind of boiler load adjustment combines outside peak-frequency regulation equipment |
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| CN110671690A (en) * | 2019-10-31 | 2020-01-10 | 赵毅 | Electrode boiler and heat storage water tank combined peak regulation method and special device |
| CN113541204A (en) * | 2021-08-10 | 2021-10-22 | 上海电力大学 | Self-adaptive adjustment method and system for full-load peak shaving of coal-fired generator set |
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