CN108258730B - Abandonment heating system and method under a kind of scheduling of electric network coordination - Google Patents
Abandonment heating system and method under a kind of scheduling of electric network coordination Download PDFInfo
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- CN108258730B CN108258730B CN201810101550.0A CN201810101550A CN108258730B CN 108258730 B CN108258730 B CN 108258730B CN 201810101550 A CN201810101550 A CN 201810101550A CN 108258730 B CN108258730 B CN 108258730B
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- 238000004891 communication Methods 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000005338 heat storage Methods 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
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- H02J3/386—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The present invention relates to the abandonment heating methods under a kind of scheduling of electric network coordination, when being applied to the power grid critical abandonment of generation, carry out electric heat accumulation to abandonment electricity.Fully consider power grid current operating conditions, wind-powered electricity generation prediction power output, conventional power unit is adjustable information such as power output, electric heat accumulation residual capacity, when judging that power grid has been in critical abandonment state, abandonment electricity is stored in the form of thermal energy the coordinated scheduling of control centre.The present invention passes through the coordinated scheduling at regulation center, can accurately utilize the abandonment energy, also improve traditional heating system pollution on the environment.Compared to more current heating system, significant improvement is achieved in terms of energy saving and environmental protection.
Description
Technical field
The invention belongs to power scheduling field, the abandonment heating system and method that are related under a kind of electric network coordination scheduling.
Background technique
Influenced by the hair of electric system, for, the characteristic that is completed at the same time, the randomness of new energy power output, fluctuation and
Having a rest property needs to be adjusted by electric system is unified, and new energy after access electric system, increases the burden of system adjusting at high proportion.Electricity
The principle of Force system balance is to adjust normal power supplies power output follow load variation, maintains the dynamic equilibrium of electric system, power train
Light is abandoned in the abandonment that will lead to new energy when regulating power deficiency of uniting.New energy dissolves problem and system regulating power is closely related.
Northern China needs to heat in winter, this results in a large amount of cogeneration units can not due to undertaking heat supply task
Its power output is reduced, this is the serious major reason of winter wind-abandoning phenomenon, therefore is badly in need of energy while ensureing heating
Enough methods for significantly promoting utilization of new energy resources rate.
Summary of the invention
In order to solve the above-mentioned problems of the prior art, on the one hand, the present invention provides under a kind of scheduling of electric network coordination
Abandonment heating system, which mainly includes following mechanism: wind power plant 1, control centre 3, electric heat accumulation 5 and conventional power unit 8；Respectively
Communication mode between mechanism is as follows: wind farm power prediction 2, electric heat accumulation residual capacity 4, heat accumulation plan 6, conventional power unit power output
Plan 7, conventional power unit is adjustable power output 9, wind power plant abandonment instruction 10.
Core institution of the control centre 3 as the abandonment heating method, respectively with wind power plant 1, electric heat accumulation 5 and conventional power unit
8 are attached communication；
Control centre 3 receives the wind farm power prediction 2 that wind power plant 1 issues, and decides whether after a series of judgements
Abandonment, and wind power plant abandonment instruction 10 is sent to wind power plant 1；
Control centre 3 receives the electric heat accumulation residual capacity 4 that electric heat accumulation 5 issues, and formulates heat accumulation according to the size of abandonment electricity
Plan 6, and heat accumulation plan 6 is sent to electric heat accumulation 5；
Control centre 3 receives the adjustable power output 9 of conventional power unit that conventional power unit 8 issues, and is determined according to the size of abandonment electricity
Conventional power unit power output whether is adjusted, formulates conventional power unit power output plan 7, and send conventional power unit power output plan to conventional power unit 8
7；
Wind power plant 1 continues to send wind farm power prediction 2 to control centre 3, when control centre 3 is according to currently received wind
When electric field power prediction 2 judges that wind power plant 1 will occur abandonment and ration the power supply, just rations the power supply state in critical abandonment, given according to calculating
Abandonment electricity is predicted out.Critical abandonment ration the power supply state when, control centre 3 receive conventional power unit 8 send conventional power unit may bring up
Power 9, the size of comparison prediction abandonment electricity and the adjustable power output 9 of conventional power unit.If power output 9 that conventional power unit is adjustable is greater than prediction abandonment
Electricity then adjusts conventional power unit power output and is rationed the power supply with preventing abandonment；If power output 9 that conventional power unit is adjustable is less than prediction abandonment electricity
Or the power output of conventional power unit 8 cannot be adjusted, then prepares starting electrical heat-storing device and store to abandonment electricity.Start electrical heat-storing device
Before, control centre 3 receives the electric heat accumulation residual capacity 4 that electric heat accumulation 5 is sent, comparison prediction abandonment electricity and electric heat accumulation residual capacity
4 size.If electric heat accumulation residual capacity 4 is greater than prediction abandonment electricity, ration the power supply without carrying out abandonment, abandonment electricity is all used
In electric heat accumulation；If electric heat accumulation residual capacity 4 is less than prediction abandonment electricity, first by the thermal energy storage of electrical heat-storing device to maximum
Capacity, then the progress abandonment of remaining wind energy is rationed the power supply.
The method of discrimination according to used in above system is as follows:
Control centre 3 receives the wind farm power prediction 2 that wind power plant 1 issues, and decides whether after a series of judgements
Abandonment, and wind power plant abandonment instruction 10 is sent to wind power plant 1, judgment basis is as follows:
Wherein, Pwind_forecastFor wind-powered electricity generation field prediction generated output, Pwind_permitAllow for wind power plant in the case of not adjusting
Maximum power generation, Padjustable_maxFor the maximum adjustable power output of conventional power unit, Pheat_maxFor electric heat accumulation maximal input.
The confined generated output of wind power plant is as follows after generating abandonment:
Pwind_limit=Pwind_permit+Padjustable_max+Pheat_max
Wherein, Pwind_limittGenerated output after rationing the power supply for wind power plant abandonment.
Control centre 3 receives the electric heat accumulation residual capacity 4 that electric heat accumulation 5 issues, and formulates heat accumulation according to the size of abandonment electricity
Plan 6, and heat accumulation plan 6 is sent to electric heat accumulation 5, electric heat accumulation power calculation is according to as follows:
Wherein, Pheat_storageFor electric heat accumulation input power, Pwind_currentFor the current generated output of wind power plant,
Cheat_currentFor the current memory capacity of electric heat accumulation, Cheat_fullFor electric heat accumulation maximum capacity.
Control centre 3 receives the adjustable power output 9 of conventional power unit that conventional power unit 8 issues, and is determined according to the size of abandonment electricity
Conventional power unit power output whether is adjusted, formulates conventional power unit power output plan 7, and send conventional power unit power output plan to conventional power unit 8
7, the calculation basis for power output that conventional power unit is adjustable is as follows:
Padjustable_max=(PCoal_current-PCoal_min)+(Pcontact_max-Pcontact_current)
Wherein, Padjustable_maxFor the maximum adjustable power output of conventional power unit, PCoal_currentIt currently contributes for fired power generating unit,
PCoal_minFor fired power generating unit minimum technology power output, Pcontact_maxFor the maximum exportable power of interconnection, Pcontact_currentFor connection
Winding thread present output power.
In order to solve the above-mentioned problems of the prior art, on the other hand, the present invention provides a kind of scheduling of electric network coordination
Under abandonment heating method, this method is as follows:
Wind power plant 1 continues to send wind farm power prediction 2 to control centre 3, when control centre 3 is according to currently received wind
When electric field power prediction 2 judges that wind power plant 1 will occur abandonment and ration the power supply, just rations the power supply state in critical abandonment, given according to calculating
Abandonment electricity is predicted out.
Critical abandonment ration the power supply state when, control centre 3 receive conventional power unit 8 send conventional power unit it is adjustable power output 9, compare
Predict the size of abandonment electricity and the adjustable power output 9 of conventional power unit.If power output 9 that conventional power unit is adjustable is greater than prediction abandonment electricity,
Adjustment conventional power unit power output is rationed the power supply with preventing abandonment；If conventional power unit is adjustable, power output 9 is less than prediction abandonment electricity or routine
The power output of unit 8 cannot be adjusted, then prepares starting electrical heat-storing device and store to abandonment electricity.
Before starting electrical heat-storing device, control centre 3 receives the electric heat accumulation residual capacity 4 that electric heat accumulation 5 is sent, and comparison prediction is abandoned
The size of wind-powered electricity generation amount and electric heat accumulation residual capacity 4.If electric heat accumulation residual capacity 4 is greater than prediction abandonment electricity, without being abandoned
Wind is rationed the power supply, and abandonment electricity is completely used for electric heat accumulation；If electric heat accumulation residual capacity 4 is less than prediction abandonment electricity, first will be electric
The thermal energy storage of heat-storing device is rationed the power supply to maximum capacity, then by the progress abandonment of remaining wind energy.
It is as follows according to method of discrimination used in the above method:
Control centre 3 receives the wind farm power prediction 2 that wind power plant 1 issues, and decides whether after a series of judgements
Abandonment, and wind power plant abandonment instruction 10 is sent to wind power plant 1, judgment basis is as follows:
Wherein, Pwind_forecastFor wind-powered electricity generation field prediction generated output, Pwind_permitAllow for wind power plant in the case of not adjusting
Maximum power generation, Padjustable_maxFor the maximum adjustable power output of conventional power unit, Pheat_maxFor electric heat accumulation maximal input.
The confined generated output of wind power plant is as follows after generating abandonment:
Pwind_limit=Pwind_permit+Padjustable_max+Pheat_max
Wherein, Pwind_limittGenerated output after rationing the power supply for wind power plant abandonment.
Control centre 3 receives the electric heat accumulation residual capacity 4 that electric heat accumulation 5 issues, and formulates heat accumulation according to the size of abandonment electricity
Plan 6, and heat accumulation plan 6 is sent to electric heat accumulation 5, electric heat accumulation power calculation is according to as follows:
Wherein, Pheat_storageFor electric heat accumulation input power, Pwind_currentFor the current generated output of wind power plant,
Cheat_currentFor the current memory capacity of electric heat accumulation, Cheat_fullFor electric heat accumulation maximum capacity.
Control centre 3 receives the adjustable power output 9 of conventional power unit that conventional power unit 8 issues, and is determined according to the size of abandonment electricity
Conventional power unit power output whether is adjusted, formulates conventional power unit power output plan 7, and send conventional power unit power output plan to conventional power unit 8
7, the calculation basis for power output that conventional power unit is adjustable is as follows:
Padjustable_max=(PCoal_current-PCoal_min)+(Pcontact_max-Pcontact_current)
Wherein, Padjustable_maxFor the maximum adjustable power output of conventional power unit, PCoal_currentIt currently contributes for fired power generating unit,
PCoal_minFor fired power generating unit minimum technology power output, Pcontact_maxFor the maximum exportable power of interconnection, Pcontact_currentFor connection
Winding thread present output power.
Beneficial effect
The present invention provides the abandonment heating methods under a kind of scheduling of electric network coordination, allow the abandonment energy in electric network coordination
Scheduling is lower to carry out electric heat accumulation.The present invention passes through the coordinated scheduling at regulation center, can accurately utilize the abandonment energy, also improve
Traditional heating system pollution on the environment.Compared to more current heating system, taken in terms of energy saving and environmental protection
Obtained significant improvement.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is implementation flow chart of the invention.
Specific embodiment
The following are the specific work process in the various situations of the present invention.If system scale are as follows: 1 capacity of wind power plant is 50MW,
Electric 5 capacity of heat accumulation is 5MW, and conventional power unit 8 can currently contribute range as 95MW-100MW, total load 150MW.
(1) conventional power unit 8 is contributed non-adjustable, and electric 5 residual capacity of heat accumulation is insufficient
The current power output of wind power plant 1 30MW, the prediction power output of wind power plant 1 are up to 35MW, the current power output of conventional power unit 8 95MW,
Current loads 125MW, electric 5 residual capacity 2MW of heat accumulation.
The sum of prediction wind power plant 1 power output and the power output of conventional power unit 8 have reached 130MW at this time, and current loads only have 125MW,
And the power output of conventional power unit 8 cannot be adjusted up to minimum value, electric 5 capacity of heat accumulation there remains 2MW, be not enough to receive whole wind-powered electricity generations.By
The publication instruction of control centre 3, has 2MW in the 5MW wind-powered electricity generation having more for electric heat accumulation 5, the adjustment wind-power electricity generation curve of wind power plant 1 by its
Its 3MW is discarded.
(2) conventional power unit 8 is contributed non-adjustable, and electric 5 residual capacity of heat accumulation is sufficient
The current power output of wind power plant 1 30MW, the prediction power output of wind power plant 1 are up to 33MW, the current power output of conventional power unit 8 95MW,
Current loads 125MW, electric 5 residual capacity 4MW of heat accumulation.
The sum of prediction wind power plant 1 power output and the power output of conventional power unit 8 have reached 128MW at this time, and current loads only have 125MW,
And the power output of conventional power unit 8 cannot be adjusted up to minimum value, electric 5 capacity of heat accumulation there remains 4MW, receive whole wind-powered electricity generations enough.By adjusting
The publication instruction of degree center 3, the 3MW wind-powered electricity generation having more are used for electric heat accumulation 5, are not necessarily to abandonment.
(3) conventional power unit 8 is contributed adjustable, still needs to ration the power supply after adjustment, and electric 5 residual capacity of heat accumulation is insufficient
The current power output of wind power plant 1 30MW, the prediction power output of wind power plant 1 are up to 40MW, the current power output of conventional power unit 8 100MW,
Current loads 130MW, electric 5 residual capacity 2MW of heat accumulation.
The sum of prediction wind power plant 1 power output and the power output of conventional power unit 8 have reached 140MW at this time, and current loads only have 130MW,
The power output of conventional power unit 8 can lower 5MW, still be not enough to receive whole wind-powered electricity generations after adjustment, electric 5 capacity of heat accumulation there remains 2MW, be not enough to
Receive whole wind-powered electricity generations.It is issued and is instructed by control centre 3, the power output of conventional power unit 8 lowers 5MW, has 2MW use in the 5MW wind-powered electricity generation having more
In electric heat accumulation 5, wind power plant 1 adjusts wind-power electricity generation curve and discards other 3MW.
(4) conventional power unit 8 is contributed adjustable, still needs to ration the power supply after adjustment, and electric 5 residual capacity of heat accumulation is sufficient
The current power output of wind power plant 1 30MW, the prediction power output of wind power plant 1 are up to 38MW, the current power output of conventional power unit 8 100MW,
Current loads 130MW, electric 5 residual capacity 4MW of heat accumulation.
The sum of prediction wind power plant 1 power output and the power output of conventional power unit 8 have reached 138MW at this time, and current loads only have 130MW,
The power output of conventional power unit 8 can lower 5MW, still be not enough to receive whole wind-powered electricity generations after adjustment, electric 5 capacity of heat accumulation there remains 4MW.By dispatching
The publication instruction of center 3, the power output of conventional power unit 8 lower 5MW, and the 3MW wind-powered electricity generation having more is used for electric heat accumulation 5, is not necessarily to abandonment.
(5) conventional power unit 8 is contributed adjustable, is not required to ration the power supply after adjustment
The current power output of wind power plant 1 30MW, the prediction power output of wind power plant 1 are up to 34MW, the current power output of conventional power unit 8 100MW,
Current loads 130MW, electric 5 residual capacity 4MW of heat accumulation.
The sum of prediction wind power plant 1 power output and the power output of conventional power unit 8 have reached 134MW at this time, and current loads only have 130MW,
The power output of conventional power unit 8 can lower 5MW, and whole wind-powered electricity generations can be received after adjustment.It is issued and is instructed by control centre 3, conventional power unit 8 goes out
Power lowers 5MW, is not necessarily to abandonment.
Claims (1)
1. the abandonment heating system under a kind of electric network coordination scheduling, it is characterised in that system mainly includes following mechanism:
Wind power plant 1, control centre 3, electric heat accumulation 5 and conventional power unit 8；
Communication mode between each mechanism is as follows:
Wind farm power prediction 2, electric heat accumulation residual capacity 4, heat accumulation plan 6, conventional power unit power output plan 7, conventional power unit is adjustable
Power output 9, wind power plant abandonment instruction 10；
Core institution of the control centre 3 as the abandonment heating system, respectively with wind power plant 1, electric heat accumulation 5 and conventional power unit 8 into
Row connection communication；
Control centre 3 receives the wind farm power prediction 2 that wind power plant 1 issues, and decides whether abandonment after a series of judgements,
And wind power plant abandonment instruction 10 is sent to wind power plant 1；
Control centre 3 receives the electric heat accumulation residual capacity 4 that electric heat accumulation 5 issues, and formulates heat accumulation plan according to the size of abandonment electricity
6, and heat accumulation plan 6 is sent to electric heat accumulation 5；
Control centre 3 receives the adjustable power output 9 of conventional power unit that conventional power unit 8 issues, and is decided whether according to the size of abandonment electricity
Conventional power unit power output is adjusted, formulates conventional power unit power output plan 7, and send conventional power unit power output plan 7 to conventional power unit 8；
The wind power plant 1 continues to send wind farm power prediction 2 to control centre 3, when control centre 3 is according to currently received
When wind farm power prediction 2 judges that wind power plant 1 will occur abandonment and ration the power supply, just ration the power supply state in critical abandonment, according to calculating
Provide prediction abandonment electricity；
The critical abandonment is rationed the power supply state, and when state is rationed the power supply in critical abandonment, control centre 3 receives what conventional power unit 8 was sent
Power output 9 that conventional power unit is adjustable, the size of comparison prediction abandonment electricity and the adjustable power output 9 of conventional power unit；If conventional power unit may bring up
Power 9 is greater than prediction abandonment electricity, then adjusts conventional power unit power output and rationed the power supply with preventing abandonment；If power output 9 that conventional power unit is adjustable
It cannot be adjusted less than prediction abandonment electricity or the power output of conventional power unit 8, then prepare starting electrical heat-storing device and abandonment electricity is deposited
Storage；
The electrical heat-storing device, before starting electrical heat-storing device, it is remaining that control centre 3 receives the electric heat accumulation that electric heat accumulation 5 is sent
Capacity 4, the size of comparison prediction abandonment electricity and electric heat accumulation residual capacity 4；If electric heat accumulation residual capacity 4 is greater than prediction abandonment electricity
Amount then rations the power supply without carrying out abandonment, abandonment electricity is completely used for electric heat accumulation；If electric heat accumulation residual capacity 4 is less than prediction abandonment
Remaining wind energy then first by the thermal energy storage of electrical heat-storing device to maximum capacity, then is carried out abandonment and rationed the power supply by electricity；
The control centre 3 receives the wind farm power prediction 2 that wind power plant 1 issues, and decides whether to need after a series of judgements
Abandonment is wanted, judgment basis is as follows:
Wherein, Pwind_forecastFor wind-powered electricity generation field prediction generated output, Pwind_permitAllow for wind power plant in the case of not adjusting maximum
Generated output, Padjustable_maxFor the maximum adjustable power output of conventional power unit, Pheat_maxFor electric heat accumulation maximal input；
The confined generated output of wind power plant is as follows after generating abandonment:
Pwind_limit=Pwind_permit+Padjustable_max+Pheat_max
Wherein, Pwind_limittGenerated output after rationing the power supply for wind power plant abandonment；
The control centre 3 receives the electric heat accumulation residual capacity 4 that electric heat accumulation 5 issues, and is formulated and is stored up according to the size of abandonment electricity
Heat plan 6, and heat accumulation plan 6 is sent to electric heat accumulation 5, electric heat accumulation power calculation is according to as follows:
Wherein, Pheat_storageFor electric heat accumulation input power, Pwind_currentFor the current generated output of wind power plant, Cheat_currentFor
The current memory capacity of electric heat accumulation, Cheat_fullFor electric heat accumulation maximum capacity；
The control centre 3 receives the adjustable power output 9 of conventional power unit that conventional power unit 8 issues, and is determined according to the size of abandonment electricity
It is fixed whether to adjust conventional power unit power output, conventional power unit power output plan 7 is formulated, and send conventional power unit power output meter to conventional power unit 8
7 are drawn, the calculation basis for power output that conventional power unit is adjustable is as follows:
Padjustable_max=(PCoal_current-PCoal_min)+(Pcontact_max-Pcontact_current)
Wherein, Padjustable_maxFor the maximum adjustable power output of conventional power unit, PCoal_currentIt currently contributes for fired power generating unit, PCoal_min
For fired power generating unit minimum technology power output, Pcontact_maxFor the maximum exportable power of interconnection, Pcontact_currentIt is current for interconnection
Output power；
Wind power plant 1 continues to send wind farm power prediction 2 to control centre 3, when control centre 3 is according to currently received wind power plant
When power prediction 2 judges that wind power plant 1 will occur abandonment and ration the power supply, just rations the power supply state, provided according to calculating pre- in critical abandonment
Survey abandonment electricity；
Critical abandonment ration the power supply state when, control centre 3 receive conventional power unit 8 send conventional power unit it is adjustable power output 9, comparison prediction
The size of abandonment electricity and the adjustable power output 9 of conventional power unit；If power output 9 that conventional power unit is adjustable is greater than prediction abandonment electricity, adjust
Conventional power unit power output is rationed the power supply with preventing abandonment；If conventional power unit is adjustable, power output 9 is less than prediction abandonment electricity or conventional power unit 8
Power output cannot be adjusted, then prepares starting electrical heat-storing device and store to abandonment electricity；
Before starting electrical heat-storing device, control centre 3 receives the electric heat accumulation residual capacity 4 that electric heat accumulation 5 is sent, comparison prediction abandonment electricity
The size of amount and electric heat accumulation residual capacity 4；If electric heat accumulation residual capacity 4 is greater than prediction abandonment electricity, without carrying out abandonment limit
Abandonment electricity is completely used for electric heat accumulation by electricity；If electric heat accumulation residual capacity 4 is less than prediction abandonment electricity, first by electric heat accumulation
The thermal energy storage of device is rationed the power supply to maximum capacity, then by the progress abandonment of remaining wind energy；
The control centre 3 receives the wind farm power prediction 2 that wind power plant 1 issues, and decides whether to need after a series of judgements
Abandonment is wanted, judgment basis is as follows:
Wherein, Pwind_forecastFor wind-powered electricity generation field prediction generated output, Pwind_permitAllow for wind power plant in the case of not adjusting maximum
Generated output, Padjustable_maxFor the maximum adjustable power output of conventional power unit, Pheat_maxFor electric heat accumulation maximal input；
The confined generated output of wind power plant is as follows after generating abandonment:
Pwind_limit=Pwind_permit+Padjustable_max+Pheat_max
Wherein, Pwind_limittGenerated output after rationing the power supply for wind power plant abandonment；
The control centre 3 receives the electric heat accumulation residual capacity 4 that electric heat accumulation 5 issues, and is formulated and is stored up according to the size of abandonment electricity
Heat plan 6, and heat accumulation plan 6 is sent to electric heat accumulation 5, electric heat accumulation power calculation is according to as follows:
Wherein, Pheat_storageFor electric heat accumulation input power, Pwind_currentFor the current generated output of wind power plant, Cheat_currentFor
The current memory capacity of electric heat accumulation, Cheat_fullFor electric heat accumulation maximum capacity；
The control centre 3 receives the adjustable power output 9 of conventional power unit that conventional power unit 8 issues, and is determined according to the size of abandonment electricity
It is fixed whether to adjust conventional power unit power output, conventional power unit power output plan 7 is formulated, and send conventional power unit power output meter to conventional power unit 8
7 are drawn, the calculation basis for power output that conventional power unit is adjustable is as follows:
Padjustable_max=(PCoal_current-PCoal_min)+(Pcontact_max-Pcontact_current)
Wherein, Padjustable_maxFor the maximum adjustable power output of conventional power unit, PCoal_currentIt currently contributes for fired power generating unit, PCoal_min
For fired power generating unit minimum technology power output, Pcontact_maxFor the maximum exportable power of interconnection, Pcontact_currentIt is current for interconnection
Output power；
System scale are as follows: 1 capacity of wind power plant is 50MW, and electric 5 capacity of heat accumulation is 5MW, and the range that can currently contribute of conventional power unit 8 is
95MW-100MW, total load 150MW；
(1) conventional power unit 8 is contributed non-adjustable, and electric 5 residual capacity of heat accumulation is insufficient
The current power output of wind power plant 1 30MW, the prediction power output of wind power plant 1 are up to 35MW, the current power output of conventional power unit 8 95MW, currently
Load 125MW, electric 5 residual capacity 2MW of heat accumulation；
The sum of prediction wind power plant 1 power output and the power output of conventional power unit 8 have reached 130MW at this time, and current loads only have 125MW, and often
The rule power output of unit 8 cannot be adjusted up to minimum value, and electric 5 capacity of heat accumulation there remains 2MW, be not enough to receive whole wind-powered electricity generations；By dispatching
The publication instruction of center 3 has in the 5MW wind-powered electricity generation having more 2MW for electric heat accumulation 5, and the adjustment wind-power electricity generation curve of wind power plant 1 will be other
3MW is discarded；
(2) conventional power unit 8 is contributed non-adjustable, and electric 5 residual capacity of heat accumulation is sufficient
The current power output of wind power plant 1 30MW, the prediction power output of wind power plant 1 are up to 33MW, the current power output of conventional power unit 8 95MW, currently
Load 125MW, electric 5 residual capacity 4MW of heat accumulation；
The sum of prediction wind power plant 1 power output and the power output of conventional power unit 8 have reached 128MW at this time, and current loads only have 125MW, and often
The rule power output of unit 8 cannot be adjusted up to minimum value, and electric 5 capacity of heat accumulation there remains 4MW, receive whole wind-powered electricity generations enough；By in scheduling
The publication instruction of the heart 3, the 3MW wind-powered electricity generation having more are used for electric heat accumulation 5, are not necessarily to abandonment；
(3) conventional power unit 8 is contributed adjustable, still needs to ration the power supply after adjustment, and electric 5 residual capacity of heat accumulation is insufficient
The current power output of wind power plant 1 30MW, the prediction power output of wind power plant 1 are up to 40MW, the current power output of conventional power unit 8 100MW, currently
Load 130MW, electric 5 residual capacity 2MW of heat accumulation；
The sum of prediction wind power plant 1 power output and the power output of conventional power unit 8 have reached 140MW at this time, and current loads only have 130MW, conventional
The power output of unit 8 can lower 5MW, still be not enough to receive whole wind-powered electricity generations after adjustment, electric 5 capacity of heat accumulation there remains 2MW, be not enough to receive
Whole wind-powered electricity generations；It is issued and is instructed by control centre 3, the power output of conventional power unit 8 lowers 5MW, has 2MW to be used for electricity in the 5MW wind-powered electricity generation having more
Heat accumulation 5, wind power plant 1 adjust wind-power electricity generation curve and discard other 3MW；
(4) conventional power unit 8 is contributed adjustable, still needs to ration the power supply after adjustment, and electric 5 residual capacity of heat accumulation is sufficient
The current power output of wind power plant 1 30MW, the prediction power output of wind power plant 1 are up to 38MW, the current power output of conventional power unit 8 100MW, currently
Load 130MW, electric 5 residual capacity 4MW of heat accumulation；
The sum of prediction wind power plant 1 power output and the power output of conventional power unit 8 have reached 138MW at this time, and current loads only have 130MW, conventional
The power output of unit 8 can lower 5MW, still be not enough to receive whole wind-powered electricity generations after adjustment, electric 5 capacity of heat accumulation there remains 4MW；By control centre
3 publication instructions, the power output of conventional power unit 8 lower 5MW, and the 3MW wind-powered electricity generation having more is used for electric heat accumulation 5, is not necessarily to abandonment；
(5) conventional power unit 8 is contributed adjustable, is not required to ration the power supply after adjustment
The current power output of wind power plant 1 30MW, the prediction power output of wind power plant 1 are up to 34MW, the current power output of conventional power unit 8 100MW, currently
Load 130MW, electric 5 residual capacity 4MW of heat accumulation；
The sum of prediction wind power plant 1 power output and the power output of conventional power unit 8 have reached 134MW at this time, and current loads only have 130MW, conventional
The power output of unit 8 can lower 5MW, and whole wind-powered electricity generations can be received after adjustment；It is issued and is instructed by control centre 3, under conventional power unit 8 is contributed
5MW is adjusted, abandonment is not necessarily to；
Implementing procedure the are as follows: start-critical abandonment state of rationing the power supply-conventional power unit is adjustable power output, if so, adjustment conventional power unit power output；
If it is not, whether electric heat accumulation residual capacity is sufficient；
Whether ration the power supply after adjustment conventional power unit power output-adjustment, if so, whether electric heat accumulation residual capacity is sufficient；If it is not, terminating；
Whether electric heat accumulation residual capacity is sufficient, if so, whole abandonment electricity are used for electric heat accumulation；If it is not, part abandonment electricity is used for
Electric heat accumulation；
Whole abandonment electricity are used for electric heat accumulation-end；
Abandonment electricity in part, which is used for electric heat accumulation-adjustment wind-power electricity generation curve-generation abandonment is rationed the power supply-, to be terminated.
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| CN107039990A (en) * | 2017-06-14 | 2017-08-11 | 哈尔滨工业大学 | A kind of multi-heat source coordinated scheduling policy development method for improving wind electricity digestion capability |
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| CN107508328A (en) * | 2017-04-08 | 2017-12-22 | 东北电力大学 | Consider the association system energy optimizing method of wind electricity digestion |
| CN107039990A (en) * | 2017-06-14 | 2017-08-11 | 哈尔滨工业大学 | A kind of multi-heat source coordinated scheduling policy development method for improving wind electricity digestion capability |
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