CN107994618A - The active power dispatching method and power distribution network measuring and controlling equipment of power distribution network level light accumulation - Google Patents
The active power dispatching method and power distribution network measuring and controlling equipment of power distribution network level light accumulation Download PDFInfo
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- CN107994618A CN107994618A CN201711351740.XA CN201711351740A CN107994618A CN 107994618 A CN107994618 A CN 107994618A CN 201711351740 A CN201711351740 A CN 201711351740A CN 107994618 A CN107994618 A CN 107994618A
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- 238000004146 energy storage Methods 0.000 claims abstract description 124
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- 230000005611 electricity Effects 0.000 description 6
- 208000033748 Device issues Diseases 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
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Classifications
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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
- H02J3/48—Controlling the sharing of the in-phase component
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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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- H02J3/383—
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
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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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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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- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of active power dispatching method of power distribution network level light accumulation, wherein, the smooth accumulation includes photovoltaic plant, energy storage device, family light storage device and two or more of family in uncontrollable photovoltaic devices, the described method includes：The active power dispatch value issued by power distribution network, is scheduled the active power of each device in the smooth accumulation.Also, the invention also discloses a kind of power distribution network measuring and controlling equipment using the above method.The present invention carries out direct scheduling controlling for each photovoltaic, energy storage distributed device, the barrier of photovoltaic plant and the integrated scheduling of energy storage device progress under traditional scheduler mode is broken, grid dispatching center is transferred to handle load prediction link so that the scheduling operation of active power is more accurate reliable.
Description
Technical field
The present invention relates to distribution network technology field, and in particular, to a kind of active power tune of power distribution network level light accumulation
Degree method and a kind of power distribution network measuring and controlling equipment.
Background technology
With greatly developing for intelligent grid and renewable energy power generation technology, photovoltaic generation in electric system should
With increasingly increasing.Photovoltaic power generation apparatus mainly has photovoltaic plant, light electricity storage station, family with light storage device and family photovoltaic devices
Deng.Photovoltaic power generation technology has the characteristics that randomness, intermittence, since power grid is limited to the digestion capability of photovoltaic active power,
Optical issue is easily abandoned, therefore photovoltaic devices are equipped with energy storage device at the same time mostly, stablize light-preserved system and contribute, pass through peak load shifting
Reduce various problems caused by reversal tidal current.
The photovoltaic devices power generation mode of single household installation is mostly " generating power for their own use, remaining electricity online ", due to family load randomness
Relatively strong, be fed to the electricity of power grid is influenced be subject to multiple factors such as illumination, weather, loads.Contribute, reduce to stablize photovoltaic
Impact to power grid, is progressively applied equipped with the light storage device of energy storage device.Light storage device can be according to photovoltaic, energy storage, electricity
Net state etc. selects different operating mode, can independent operating, can also be incorporated into the power networks, possess stronger grid adaptability.But
The current family photovoltaic devices used on a large scale do not receive dispatching of power netwoks, cause to abandon that optical phenomenon is serious, and energy utilization rate declines.No
Randomness and intermittent reversal tidal current feed-in power grid are made the out-of-limit problem of distribution terminal voltage dash forward by the light storage device of scheduled
Go out, significantly impact the stability of power grid, higher level's power grid is carried out accuracy during power dispatching and decline.
The prior art does not take into full account that the cluster of family small-power photovoltaic devices is a large amount of grid-connected to network re-active power tune
Spend the deviation produced；Photovoltaic plant and energy storage device are integrated into a whole externally contributing, grid dispatching center is not possessed
The ability that both devices are dispatched respectively.
The content of the invention
A kind of electric power networks communication of the present invention based on high reliability, it is proposed that active power of power distribution network level light accumulation
Dispatching method and power distribution network measuring and controlling equipment.This method is applied in the installation of distribution net platform region transformer (10kV/380V) low-pressure side
In measure and control device, this method receives the active power dispatch value that higher level's power grid issues, and to the photovoltaic plant of cluster, storage under taiwan area
Battery class energy storage device, family are exported to all access low-voltage distribution networks of power grid with light storage device and family uncontrollable photovoltaic devices etc.
The active power of photovoltaic devices carry out pool scheduling, optical issue control will be abandoned in the range of power grid maximum digestion capability, had
Effect improves power distribution network stability.
To achieve these goals, the present invention uses following technical scheme：
A kind of active power dispatching method of power distribution network level light accumulation, wherein, the smooth accumulation include photovoltaic plant,
Energy storage device, family two or more in uncontrollable photovoltaic devices with light storage device and family, the described method includes：By with
The active power dispatch value that power grid issues, is scheduled the active power of each device in the smooth accumulation.
Preferably, the smooth accumulation includes photovoltaic plant, energy storage device, the family uncontrollable light of light storage device and family
Device is lied prostrate, power dispatching is carried out successively with the order of light storage device according to the energy storage device, the photovoltaic plant and the family,
To the family with uncontrollable photovoltaic devices without scheduling.
Preferably, include the following steps：S1：By whole devices of the active power dispatch value and the smooth accumulation
Total active power is compared, when the active power dispatch value and total active power of whole devices of the smooth accumulation
When difference is more than 0, SA3 is carried out：By the difference compared with total maximum active power increment of the energy storage device, when the difference
When value is less than total maximum active power increment of the energy storage device, SA31 is carried out：Energy storage device is compared according to SOC reduced values
Example distribution, when the difference is more than total maximum active power increment of the energy storage device, carries out SA32：Energy storage device is according to volume
Determine power output, then carry out SA4：Total maximum active power of the difference and the energy storage device and the photovoltaic plant is increased
The sum of amount is compared, when the difference is less than the sum of total maximum active power increment of the energy storage device and the photovoltaic plant
When, carry out SA41：Photovoltaic plant is according to active allowance distribution, when the difference is more than the energy storage device and the photovoltaic plant
During the sum of total maximum active power increment, SA42 is carried out：Photovoltaic plant is exported according to rated power, then carries out SA5：By the difference
Value is carried out with the energy storage device, the photovoltaic plant and the family with the sum of total maximum active power increment of light storage device
Compare, when the difference is less than the total maximum wattful power of the energy storage device, the photovoltaic plant and the family with light storage device
During the sum of rate increment, SA51 is carried out：Family with light storage device according to active allowance distribution, when the difference be more than the energy storage device,
When the photovoltaic plant and the family are with the sum of total maximum active power increment of light storage device, SA52 is carried out：By the family
Maximum active power is pressed with light storage device to export.
Preferably, between S1 and SA3, SA2 is further included：By the difference with setting dead band compared with, when the difference
Value be less than setting dead band on the occasion of when, end operation, when the difference be more than setting dead band on the occasion of when, carry out SA3；In SA4 and SA41
Between, further include：By total maximum active power increment of the difference and the energy storage device and setting dead band on the occasion of and progress
Compare, when the difference be less than the energy storage device total maximum active power increment and setting dead band on the occasion of and when, terminate behaviour
Make, when the difference be more than the energy storage device total maximum active power increment and setting dead band on the occasion of and when, carry out SA41；
Between SA5 and SA51, further include：Total maximum active power of the difference and the energy storage device and the photovoltaic plant is increased
Amount and setting dead band on the occasion of and be compared, when total maximum that the difference is less than the energy storage device and the photovoltaic plant has
Work(power increment and setting dead band on the occasion of and when, end operation, when the difference be more than the energy storage device total maximum it is active
Power increment and setting dead band on the occasion of and when, carry out SA51.
Preferably, include the following steps：When the difference is less than 0, SB3 is carried out：By the absolute value of the difference with it is described
Total maximum active power decrement of energy storage device is compared, when the absolute value of the difference is less than total maximum of the energy storage device
When active power is reduced, step SB31 is carried out：Energy storage device carries out pro rate according to SOC reduced values, absolute when the difference
When value is reduced more than total maximum active power of the energy storage device, step SB32 is carried out：The energy storage device is shut down, and is carried out
Step SB4：By the sum of total maximum active power decrement of the absolute value of the difference and the energy storage device and the photovoltaic plant
It is compared, total maximum active power that the energy storage device and the photovoltaic plant are less than when the absolute value of the difference is reduced it
And when, carry out step SB41：Adjust and reduce photovoltaic plant active power of output, when the difference absolute value be more than the energy storage device and
During the sum of total maximum active power decrement of the photovoltaic plant, step SB42 is carried out：The photovoltaic plant is shut down, and is carried out
SB5：The absolute value of the difference and total maximum of the energy storage device, the photovoltaic plant and the family light storage device are had
The sum of work(power reduction is compared, when the absolute value of the difference is less than the energy storage device, the photovoltaic plant and described
When family is with the sum of total maximum active power decrement of light storage device, end operation, when the difference is more than the energy storage device, progress
Step SB51：When the photovoltaic plant and the family are with the sum of total maximum active power increment of light storage device, the family is used
Light storage device is shut down.
Preferably, between S1 and SB3, SB2 is further included：By the difference compared with setting dead band negative value, when the difference
When value is more than setting dead band negative value, end operation, when the difference is less than setting dead band negative value, carries out SB3；In SB4 and SB41
Between, further include：By the total maximum active power decrement and setting dead band negative value of the absolute value of the difference and the energy storage device
It is absolute value and be compared, when the absolute value of the difference is less than total maximum active power decrement of the energy storage device and sets
Fix the absolute value of area's negative value and when, end operation, when the difference absolute value be more than the energy storage device total maximum have
Work(power reduction and setting dead band negative value absolute value and when, carry out SB41.
Preferably, SA31 or SB31 include：Calculate the active power dispatch value and subtract the photovoltaic plant, family use
The active power of the uncontrollable photovoltaic devices of light storage device and the family, obtains total active power to energy storage device distribution, root
Conversion factor is obtained according to the rated active power of the energy storage device, so that according to total active power, the conversion factor
And the SOC value of the energy storage device obtains the active power dispatch value of the energy storage device.
A kind of power distribution network measuring and controlling equipment, including：Measure and control device, positioned at the step down side；And the light preserves
Group, is connected by low-voltage bus bar with the measure and control device, wherein, the measure and control device receives the wattful power that the power distribution network issues
Rate dispatch value, the active power by the active power dispatching method of above-mentioned power distribution network level light accumulation to the smooth accumulation
It is scheduled.
Preferably, the photovoltaic plant, the energy storage device and family are become by DC/AC respectively with uncontrollable photovoltaic devices
Stream device is connected with public interface；The family includes photovoltaic array and small-power energy storage device, the photovoltaic battle array with light storage device
Row and the small-power energy storage device are connected to same DC/AC current transformers by different DC/DC current transformers, reconnect in public affairs
Interface altogether.
Compared with prior art, the present invention has the following advantages and beneficial effect：
The present invention has considered the function of all kinds of photovoltaics, energy storage device in existing power distribution network as a whole, and by classifying, substep is assisted
The mode of tune, the reliable scheduling for the cluster light storage device active power in power distribution network propose solution, reduce and abandon
Light rate.
Energy storage device carries out power dispatching according to respective SOC reduced values, has energy storage device similar in rated active power
There is similar SOC value, effectively reduce and set because touching boundary work state and situation out of service, reach electric under conventional operating mode
Net control centre's purpose controllable to each energy storage device.
The present invention can be applicable in Practical Project measure and control device, can tackle field working conditions complicated and changeable.Also, for each
Photovoltaic, energy storage distributed device carry out direct scheduling controlling, have broken photovoltaic plant and energy storage device under traditional scheduler mode
The barrier of integrated scheduling is carried out, transfers to grid dispatching center to handle load prediction link so that the scheduling behaviour of active power
Make more accurate reliable.
Brief description of the drawings
Fig. 1 is light accumulation grid connected structure schematic diagram；
Fig. 2 is each device active power method of salary distribution schematic diagram；
Fig. 3 is the active power scheduling flow figure of light accumulation.
Embodiment
Below with reference to the accompanying drawings, the present invention will be further described in detail, in order to which the present invention is more clear and is easy to
Understand.Those of ordinary skill in the art will recognize, without departing from the spirit and scope of the present invention, Ke Yiyong
A variety of modes or its combination are modified described embodiment.Therefore, attached drawing and description are inherently explanation
Property, it is not intended to limit the scope of the claims.In addition, in the present specification, attached drawing is drawn not in scale, and
Identical reference numeral represents identical part.
The present invention is by taking a certain distribution 10kV/380V transformer platform areas as an example, to the photovoltaic plant of cluster, electric power storage under the taiwan area
Pond class energy storage device, family are allocated with light storage device with family with the active power of uncontrollable photovoltaic devices.The present invention also can use
In other transformer platform areas.Above device is referred to as light accumulation, light accumulation is not limited to above device, can further include it
His light storage device, energy storage device and photovoltaic devices, or the part including above device.Wherein, photovoltaic plant, storage battery class
Energy storage device is higher power device, rated active power generally 30kW and more than, family light storage device and the uncontrollable light in family
Volt device is low power device, and rated active power is generally between 3kW-5kW.
Access is equipped with the measure and control device of this dispatching method at step down side grid entry point.On the measure and control device receives
The dispatch value of level power grid department, realizes that the data acquisition to each device in jurisdiction is controlled with instruction.The dispatching party
Method needs power grid to possess the communication link of high reliability and high real-time.
Photovoltaic plant power capacity is any, and photovoltaic array is connected by DC/AC current transformers with public interface (PCC)；Store
Battery class energy storage device power capacity is any, is connected by DC/AC current transformers with PCC points；The photovoltaic array of family light storage device
Same DC/AC current transformers are connected to by different DC/DC current transformers with small-power grade energy storage device, then pass through the DC/
AC current transformers are connected to PCC points；Family is connected with uncontrollable photovoltaic array by DC/AC current transformers with PCC points.Light accumulation is grid-connected
Structure is as shown in Figure 1.
Measure and control device receives the active power controller instruction that grid dispatching center issues, according to energy storage device-photovoltaic electric
Stand-family carries out power distribution successively with the order of light storage device.Real-time output valve for each device active power and according to ring
The maximum active power output valve of the factors such as border change, is timed renewal and stores.Each device active power method of salary distribution is shown
Meaning such as Fig. 2.
Each energy storage device current active power Pei, rated active power Peri(on the occasion of), state-of-charge SOCi.Energy storage device
Total maximum active power incrementAlways maximum active power is reduced energy storage device
Each photovoltaic plant current active power Psi, exportable maximum active-power P under current ambient conditionssri.Photovoltaic plant
Always maximum active power increment isAlways maximum active power is reduced to photovoltaic plant
Each family controllable light storage device current active power Phi, exportable maximum active-power P under current ambient conditionshri。
With light storage device, always maximum active power increment is at familyWith light storage device, always maximum active power is reduced at family
For
The uncontrollable photovoltaic devices current active power P in each familybi。
It is P that measure and control device, which receives the active power dispatch value that grid dispatching center issues,total, the current total active power of device
For
According to dispatch value and the relation of current active power of output, the active power scheduling flow figure of light accumulation is formed such as
Shown in Fig. 3, detailed annotation is as follows.
Step S1：Contrast measure and control device receives the active-power P that grid dispatching center issuestotalIt is current total active with device
Power Ppresent:
As Δ P=Ptotal-PpresentDuring ＞ 0, into branch A, as Δ P=Ptotal-PpresentEnter branch B during ＜ 0, when
Δ P=Ptotal-PpresentEnd operation when=0.
Branch A：
Step SA2：Judge Δ P ＞ setting dead band on the occasion of：
Δ P ＞ setting dead bands are unsatisfactory on the occasion of then end operation, meet Δ P ＞ setting dead bands on the occasion of then progress next step behaviour
Make.
Step SA3：Judge Δ P and Δ PeRelation：
When being unsatisfactory for Δ P ＞ Δs PeWhen enter step SA31：Energy storage device carries out pro rate according to SOC reduced values, it
End operation afterwards；
When meeting Δ P ＞ Δs PeWhen, enter step SA32：Each energy storage device is exported according to rated power, is carried out down afterwards
Single stepping.
Step SA4：Judge Δ P and Δ Pe+ΔPsRelation：
When being unsatisfactory for Δ P ＞ Δs Pe+ΔPsWhen, judge whether to meet Δ P ＞ Δs Pe+ setting dead band is on the occasion of being unsatisfactory for Δ P
＞ Δs Pe+ setting dead band meets Δ P ＞ Δs P on the occasion of then end operatione+ setting dead band is on the occasion of then entering step SA41：Photovoltaic electric
Stand by allowance distribution, afterwards end operation；
When meeting Δ P ＞ Δs Pe+ΔPsWhen, enter step SA42：Each photovoltaic plant is according to current supported maximum power
Output, carries out next step operation afterwards.
Step SA5：Judge Δ P and Δ Pe+ΔPs+ΔPhRelation：
When being unsatisfactory for Δ P ＞ Δs Pe+ΔPs+ΔPhWhen, judge whether to meet Δ P ＞ Δs Pe+ΔPs+ setting dead band on the occasion of,
It is unsatisfactory for Δ P ＞ Δs Pe+ΔPs+ setting dead band is on the occasion of then end operation；Meet Δ P ＞ Δs Pe+ΔPs+ setting dead band is on the occasion of then
Enter step SA51：Light storage device presses allowance distribution, afterwards end operation；
When meeting Δ P ＞ Δs Pe+ΔPs+ΔPhWhen, enter step SA52：Light storage device presses current supported maximum work
Rate exports, afterwards end operation.
Branch B：
Step SB2：Judge that Δ P ＜ set dead band negative value：
Δ P ＜ settings dead band negative value then end operation is unsatisfactory for, meets that Δ P ＜ settings dead band negative value then carries out next step behaviour
Make.
Step SB3：Judge | Δ P | with δ PeRelation：
When being unsatisfactory for | Δ P | ＞ δ PeWhen, enter step SB31：Energy storage device is allocated according to SOC reduced values, afterwards
End operation；
Work as satisfaction | Δ P | ＞ δ PeWhen, enter step SB32：Energy storage device is shut down, and carries out next step operation afterwards.
Step SB4：Judge | Δ P | with δ Pe+δPsRelation：
When being unsatisfactory for | Δ P | ＞ δ Pe+δPsWhen, judge whether to meet | Δ P | ＞ δ Pe+ | setting dead band negative value |, meet | Δ
P | ＞ δ Pe+ | setting dead band negative value | then into SB41：Photovoltaic plant output is adjusted and reduced, afterwards end operation；It is unsatisfactory for | Δ P | ＞ δ
Pe+ | setting dead band negative value | then direct end operation；
Work as satisfaction | Δ P | ＞ δ Pe+δPsWhen, enter step SB42：Each photovoltaic plant is shut down, and carries out next step operation afterwards.
Step SB5：Judge | Δ P | with δ Pe+δPs+δPhRelation：
It is unsatisfactory for | Δ P | ＞ δ Pe+δPs+δPhThen end operation；
Meet | Δ P | ＞ δ Pe+δPs+δPhThen enter step SB51：Each smooth storage device is shut down, afterwards end operation.
Due to the scheduling that can give an order respectively to each photovoltaic array inside each photovoltaic plant, so photovoltaic plant has necessarily
Active power regulation ability, and small-power light storage device is equivalent to power distribution network one entirety, it is weaker to adjust and reduce active power ability,
Therefore the operation link that each smooth storage device is adjusted and reduced in output power surplus ratio can be not provided with.
Step SA31：The active power output distribution of energy storage device
To total active-power P of energy storage device distribution1Photovoltaic plant is subtracted for dispatching of power netwoks value, storage is used up at family and family is not with
Controllable photovoltaic active power：P1=Ptotal-∑Psi-∑Phi-∑Pbi。
In practical applications, dead band is set for the SOC value of energy storage device, the energy storage device in dead zone range does not possess tune
Save control ability.
The rated active power of each energy storage device is standardized on the basis of certain certain value, obtains the conversion of each device
Coefficient ωi, account for the ratio of the sum of SOC value with reference to the SOC value of each energy storage device, be calculated each energy storage device is issued it is active
Power dispatching value is：
Step SA32：Cluster energy storage device is exported according to rated power
The active power dispatch value that each energy storage device issues is：Pei'=Peri。
Step SA41：Photovoltaic plant accounts for the pro rate of total allowance according to respective surplus
Energy storage device active power real time output data is updated, to total active power increment P of photovoltaic plant distribution2For electricity
Net dispatch value subtracts energy storage device currency, storage and family are used up with uncontrollable photovoltaic active power in photovoltaic plant currency, family：P2
=Ptotal-∑Pei-∑Psi-∑Phi-∑Pbi；
Each photovoltaic plant distributes active power increment：
Each photovoltaic plant issues active power dispatch value：Psi'=Δ Psi+Psi。
Step SA42：Photovoltaic plant is exported according to maximum active power each under the present circumstances
Each photovoltaic plant issues active power dispatch value：Psi'=Psri。
Step SA51：Each smooth storage device accounts for the pro rate of total allowance according to surplus
Energy storage device, photovoltaic plant active power real time output data are updated, total active power of light storage device distribution increases
Measure P3For dispatching of power netwoks value subtracts energy storage device currency, photovoltaic plant currency, the uncontrollable photovoltaic in storage and family is used up at family has
Work(power：P3=Ptotal-∑Pei-∑Psi-∑Phi-∑Pbi；
Each smooth storage device distributes active power increment：
Each smooth storage device issues active power dispatch value：Phi'=Δ Phi+Phi。
Step SA52：Each smooth storage device is exported according to maximum active power each under the present circumstances
Each smooth storage device issues active power dispatch value：Phi'=Phri。
Step SB32：Each energy storage device is shut down
The active power dispatch value that each energy storage device issues is：Pei'=0.
Step SB41：Each photovoltaic plant is shut down
Each photovoltaic plant issues active power dispatch value：Psi'=0.
Step SB42：Adjust and reduce each photovoltaic plant active power of output
Energy storage device active power real time output data is updated, to total active power increment P of photovoltaic plant distribution4For electricity
Net dispatch value subtracts energy storage device currency, storage and family are used up with uncontrollable photovoltaic active power in photovoltaic plant currency, family：P4
=Ptotal-∑Pei-∑Psi-∑Phi-∑Pbi；
Each photovoltaic plant distributes active power reduction：
Each photovoltaic plant issues active power dispatch value：Psi'=Δ Psi+Psi。
Step SB51：Each smooth storage device active power of output is 0
Each smooth storage device issues active power dispatch value：Phi'=0.
Wherein, set dead band on the occasion of with set dead band negative value as according to be actually needed setting value, according to applicable network
It is different with device, different values can be set.Dead band meeting Δ P ＞ 0 but is smaller value on the occasion of for the smaller value more than 0
In the case of, PtotalWith PpresentBetween difference it is smaller, it is not necessary to carry out next step calculating, can be with end operation.Dead band negative value
Situation it is similar with its.
The foregoing is merely the preferred embodiment of the present invention, is not intended to limit the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of active power dispatching method of power distribution network level light accumulation, wherein, the smooth accumulation includes photovoltaic plant, storage
Energy device, family two or more in uncontrollable photovoltaic devices with light storage device and family, the described method includes：
The active power dispatch value issued by power distribution network, adjusts the active power of each device in the smooth accumulation
Degree.
2. according to the method described in claim 1, wherein, the smooth accumulation uses up storage including photovoltaic plant, energy storage device, family
The uncontrollable photovoltaic devices of device and family, according to the energy storage device, the photovoltaic plant and family light storage device
Order carries out power dispatching successively, to the family with uncontrollable photovoltaic devices without scheduling.
3. according to the method described in claim 2, include the following steps：
S1：By the active power dispatch value compared with total active power of whole devices of the smooth accumulation,
When the difference of the active power dispatch value and total active power of whole devices of the smooth accumulation is more than 0, into
Row SA3：By the difference compared with total maximum active power increment of the energy storage device,
When the difference is less than total maximum active power increment of the energy storage device, SA31 is carried out：Energy storage device is rolled over according to SOC
Calculation value carries out pro rate, when the difference is more than total maximum active power increment of the energy storage device, carries out SA32：Energy storage
Device is exported according to rated power, then carries out SA4：By the difference and total maximum of the energy storage device and the photovoltaic plant
The sum of active power increment is compared,
When the difference is less than the sum of total maximum active power increment of the energy storage device and the photovoltaic plant, carry out
SA41：Photovoltaic plant is according to active allowance distribution, when the difference is more than total maximum of the energy storage device and the photovoltaic plant
During the sum of active power increment, SA42 is carried out：Photovoltaic plant is exported according to rated power, then carries out SA5：By the difference and institute
The sum of total maximum active power increment of energy storage device, the photovoltaic plant and the family light storage device is stated to be compared,
When the difference is less than the total maximum active power of the energy storage device, the photovoltaic plant and the family with light storage device
During the sum of increment, SA51 is carried out：Family with light storage device according to active allowance distribution, when the difference is more than the energy storage device, institute
When stating the sum of total maximum active power increment of photovoltaic plant and the family light storage device, SA52 is carried out：The family is used
Light storage device is pressed maximum active power and is exported.
4. according to the method described in claim 3, between S1 and SA3, SA2 is further included：By the difference with setting dead band on the occasion of
Be compared, when the difference be less than setting dead band on the occasion of when, end operation, when the difference be more than setting dead band on the occasion of when, carry out
SA3；
Between SA4 and SA41, further include：The difference and total maximum active power increment of the energy storage device and setting is dead
Area on the occasion of and be compared, when the difference be less than the energy storage device total maximum active power increment and setting dead band on the occasion of
And when, end operation, when the difference be more than the energy storage device total maximum active power increment and setting dead band on the occasion of
And when, carry out SA41；
Between SA5 and SA51, further include：By the difference and total maximum wattful power of the energy storage device and the photovoltaic plant
Rate increment and setting dead band on the occasion of and be compared, when the difference be less than the energy storage device and the photovoltaic plant it is total most
Big active power increment and setting dead band on the occasion of and when, end operation, when the difference is more than total maximum of the energy storage device
Active power increment and setting dead band on the occasion of and when, carry out SA51.
5. according to the method described in claim 3, include the following steps：
When the difference is less than 0, SB3 is carried out：By total maximum active power of the absolute value of the difference and the energy storage device
Decrement is compared,
When the absolute value of the difference is less than total maximum active power decrement of the energy storage device, step SB31 is carried out：Energy storage
Device carries out pro rate according to SOC reduced values, when the absolute value of the difference is more than total maximum wattful power of the energy storage device
When rate is reduced, step SB32 is carried out：The energy storage device is shut down, and carries out step SB4：By the absolute value of the difference and the storage
The sum of total maximum active power decrement of energy device and the photovoltaic plant is compared,
When the absolute value of the difference is less than the sum of total maximum active power decrement of the energy storage device and the photovoltaic plant,
Carry out step SB41：Photovoltaic plant active power of output is adjusted and reduced, when the absolute value of the difference is more than the energy storage device and described
During the sum of total maximum active power decrement of photovoltaic plant, step SB42 is carried out：The photovoltaic plant is shut down, and carries out SB5：Will
Total maximum active power of the absolute value of the difference with the energy storage device, the photovoltaic plant and the family with light storage device
The sum of decrement is compared,
When the absolute value of the difference is less than the total maximum of the energy storage device, the photovoltaic plant and the family with light storage device
During the sum of active power decrement, end operation, when the difference is more than the energy storage device, progress step SB51：The photovoltaic electric
Stand and during the sum of total maximum active power increment of the family light storage device, the family is shut down with light storage device.
6. according to the method described in claim 5, between S1 and SB3, SB2 is further included：By the difference and setting dead band negative value
It is compared, when the difference is more than setting dead band negative value, end operation, when the difference is less than setting dead band negative value, carries out
SB3；
Between SB4 and SB41, further include：Total maximum active power of the absolute value of the difference and the energy storage device is reduced
With setting dead band negative value absolute value and be compared, when the difference absolute value be less than the energy storage device total maximum have
Work(power reduction and setting dead band negative value absolute value and when, end operation, when the absolute value of the difference is more than the energy storage
The total maximum active power decrement and setting dead band negative value of device absolute value and when, carry out SB41.
7. the method according to claim 3 or 5, wherein, SA31 or SB31 include：The active power dispatch value is calculated to subtract
The photovoltaic plant, the family light storage device and the family active power of uncontrollable photovoltaic devices are gone, is obtained to energy storage
Total active power of device distribution, obtains conversion factor, so that according to described according to the rated active power of the energy storage device
The SOC value of total active power, the conversion factor and the energy storage device obtains the active power scheduling of the energy storage device
Value.
8. a kind of power distribution network measuring and controlling equipment, including：
Measure and control device, positioned at the step down side；And
The smooth accumulation, is connected by low-voltage bus bar with the measure and control device,
Wherein, the measure and control device receives the active power dispatch value that the power distribution network issues, and passes through the claims 1-7 institutes
The active power dispatching method for the power distribution network level light accumulation stated is scheduled the active power of the smooth accumulation.
9. power distribution network measuring and controlling equipment according to claim 8, wherein, the photovoltaic plant, the energy storage device and family
It is connected respectively by DC/AC current transformers with public interface with uncontrollable photovoltaic devices；The family includes photovoltaic with light storage device
Array and small-power energy storage device, the photovoltaic array and the small-power energy storage device are connected by different DC/DC current transformers
Same DC/AC current transformers are connected to, are reconnected in public interface.
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