CN109167397A - A kind of energy storage control method for coordinating and system - Google Patents
A kind of energy storage control method for coordinating and system Download PDFInfo
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- CN109167397A CN109167397A CN201810972313.1A CN201810972313A CN109167397A CN 109167397 A CN109167397 A CN 109167397A CN 201810972313 A CN201810972313 A CN 201810972313A CN 109167397 A CN109167397 A CN 109167397A
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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
Abstract
A kind of energy storage control method for coordinating and system, comprising: obtaining general power need to the amount of tune and response time；Based on general power the amount of tune and response time power distribution need to be carried out according to response time scale and responding power between each energy storage；When the general power need to the amount of tune be greater than all the sum of responding powers for starting energy storage when, based on the general power need to the sum of the amount of tune and all responding powers for starting energy storage calculated load need to adjust general power；And general power and response time need to be adjusted to carry out each load according to response time scale, switch state and responding power between each load based on load needs adjusting power to distribute, reduce the response times of load, make full use of traditional energy storage, improve user's comfort, enhance the complementarity of traditional energy storage and virtual load energy storage, workload demand response cost is reduced, integrally-regulated ability is improved, realizing reduces stored energy capacitance requirement and reduction energy storage cost.
Description
Technical field:
The invention belongs to power distribution networks and technical field of energy storage, and in particular to a kind of energy storage control method for coordinating and system.
Background technique:
Has the characteristics that intermittent, randomness and uncertainty using wind-force, photovoltaic power generation as the new energy of representative.With new
Energy permeability is continuously increased, and brings more and more challenges to the safe and reliable operation of power grid.Currently, being exported to new energy
There are two main classes for the method that power swing is stabilized: first is that improving to new energy own control systems, such method meeting
New energy active power output is sacrificed, and is influenced by unit allocation ability and resource；Second is that utilizing energy-storage system (energy
Storage system, ESS) adjusting is compensated to new energy fluctuating power, function is made by the quick charge and discharge ability of energy storage
Rate is stabilized more flexible, and haves no need to change unit allocation, becomes one of the effective means for solving new energy power swing.
With the extensive access of extra-high voltage large capacity transmission route and distribution system distributed generation resource, bulk power grid power supply and
The equilibrium of supply and demand of the randomness of distributed generation resource respectively in terms of supply side and user side two to power grid is brought with safe operation
Severe challenge, the power quality and the safe and economic operation problem of distribution are more prominent, and existing energy storage is dull, and regulating power is poor, load
Response times are frequent, limited by Load Regulation ability merely, and frequently regulation will affect user's comfort.
Summary of the invention:
In order to overcome drawbacks described above, the present invention provides a kind of energy storage control method for coordinating, which comprises
Obtaining general power need to the amount of tune and response time；
It need to be carried out between each energy storage according to response time scale and responding power the amount of tune and response time based on general power
Power distribution；
When the general power need to the amount of tune be greater than all the sum of responding powers for starting energy storage when, based on the general power need
The sum of tune amount and all responding powers for starting energy storage calculated load need to adjust general power；And general power and sound need to be adjusted based on load
Carrying out each load according to response time scale, switch state and responding power between each load between seasonable needs adjusting power to distribute.
Preferably, it is described based on general power need to the amount of tune and response time between each energy storage according to response time scale and sound
Power is answered to carry out power distribution, comprising:
Determine that response time scale meets the energy storage of preset condition based on the response time；
In the determining energy storage based on the general power need to the amount of tune and energy storage charge state selection it is current bootable
Energy storage；
By general power need to responding power and the general power of the amount of tune based on energy storage need to the amount of tune difference from small to large successively
Energy storage can be started by distributing to.
Preferably, described to determine that response time scale meets the calculating formula of the energy storage of preset condition based on the response time
It is as follows:
E [i]=E (TEi≤TVESS), i=1,2....n
In formula, TVESSFor the response time；TEiFor the response time scale of i-th of energy storage；E [i] is full for response time scale
I-th of energy storage of sufficient preset condition；N is energy storage number.
Preferably, it is described in the determining energy storage based on the general power need to the amount of tune and energy storage charge state selection work as
The calculating formula of preceding bootable energy storage is as follows:
In formula, E [j] indicates that meet condition starts energy storage；J is to meet in condition energy storage to start energy storage；PVESS
It need to the amount of tune for general power；socjThe state-of-charge of energy storage can be started for j-th；SOCminFor the minimum limit value of state-of-charge, SOCmax
To allow state-of-charge maximum value.
Preferably, described need to the sum of the amount of tune and all responding powers for starting energy storage calculated load based on the general power
General power need to be adjusted, calculating formula is as follows:
Pload=PVESS-PESUM
In formula, PVESSIt need to the amount of tune for general power；PloadGeneral power need to be adjusted for load；
PE[j] is j-th of bootable energy storage responding power；K is all bootable energy storage quantity；PESUMFor it is all can
Start the sum of the responding power of energy storage.
Preferably, it is described based on load need to adjust general power and response time between each load according to response time scale,
Switch state and responding power, which carry out each load, needs adjusting power to distribute, comprising:
General power need to be adjusted by obtaining load；
Determine that response time scale meets the available load of preset condition based on the response time；
General power, switch state and load responding power can need to be adjusted to carry out based on the load in load identified
Each load power distribution.
Preferably, described to determine that response time scale meets the meter of the available load of preset condition based on the response time
Formula is as follows:
L [x]=L (TLx≤TVESS), x=1,2....m
In formula, TVESSFor the response time；TLxFor the response time of x-th of load；L [x] is to meet default item the response time
X-th of load of part；M indicates load sum.
Preferably, described general power, switch state and load need to be adjusted based on the load in load identified
Responding power carries out each load power distribution, comprising:
Deferrable load is selected based on the switch state；
The responding power and load that calculate the deferrable load need to adjust the difference of general power；
Based on the difference, corresponding load is successively adjusted by the sequence of difference from small to large, until load need to adjust total work
Rate is 0.
A kind of energy storage coordinated control system, the system comprises:
Obtain module: need to the amount of tune and response time for obtaining general power；
First distribution module: for based on general power need to the amount of tune and response time between each energy storage according to response time ruler
Degree and responding power carry out power distribution；
Second distribution module: for when the general power need to the amount of tune be greater than all the sum of responding powers for starting energy storage
When, based on the general power need to the sum of the amount of tune and all responding powers for starting energy storage calculated load need to adjust general power；And base
General power and response time need to be adjusted to carry out between each load according to response time scale, switch state and responding power in load
Each load needs adjusting power to distribute.
Preferably, first distribution module, comprising: determination unit, selecting unit and allocation unit；
The determination unit, for determining that response time scale meets the energy storage of preset condition based on the response time；
The selecting unit, need to the amount of tune and energy storage charge state for being based on the general power in the determining energy storage
Select current bootable energy storage；
The start unit, for based on the responding power and the general power that can start energy storage need to the amount of tune difference from small
To being sequentially allocated greatly.
Compared with prior art, the invention has the following beneficial effects:
1, a kind of energy storage control method for coordinating acquisition general power provided by the invention need to the amount of tune and response time；Based on total work
Rate the amount of tune and response time need to carry out power distribution according to response time scale and responding power between each energy storage；When described total
Power need to the amount of tune when being greater than all the sum of responding powers for starting energy storage, the amount of tune and all need to be started based on the general power
The sum of responding power of energy storage calculated load need to adjust general power；And based on load need to adjust general power and response time each load it
Between carry out each load according to response time scale, switch state and responding power adjusting power needed to distribute, reduce the response of load
Number enhances regulating power, makes full use of traditional energy storage, improves user's comfort.
2, a kind of energy storage control method for coordinating provided by the invention enhances the complementation of traditional energy storage and virtual load energy storage
Property, workload demand response cost is reduced, integrally-regulated ability is improved, realizes the mesh for reducing stored energy capacitance and reducing energy storage cost
's.
Detailed description of the invention:
Fig. 1 is energy storage control method for coordinating flow chart of the invention；
Fig. 2 is the virtual energy storage coordination control strategy flow chart of the invention based on workload demand response.
Specific embodiment:
For a better understanding of the present invention, following will be combined with the drawings in the embodiments of the present invention, in the embodiment of the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.
Embodiment 1: energy storage control method for coordinating flow chart as shown in Figure 1, steps are as follows:
Step 1: obtaining general power need to the amount of tune and response time；
Step 2: based on general power need to the amount of tune and response time between each energy storage according to response time scale and response function
Rate carries out power distribution；
Step 3: when the general power need to the amount of tune be greater than all the sum of responding powers for starting energy storage when, based on described
General power need to the sum of the amount of tune and all responding powers for starting energy storage calculated load need to adjust general power；And it need to be adjusted always based on load
Power and response time, which carry out each load according to response time scale, switch state and responding power between each load, needs Power Regulation
Rate distribution.
The present invention proposes a kind of virtual energy storage control method for coordinating of consideration workload demand response, rings in conventional load demand
On the basis of answering, foundation has load Aggregation Model and conventional batteries energy storage of energy storage characteristic etc. and forms virtual energy storage system together
System, according to the response characteristic of each type load and traditional energy storage, by load control system and traditional energy storage control in time scale and response
It is divided on power, according to target, virtual energy storage inside each element state and constraint condition is adjusted, in virtual energy storage system
Classification adjusting is carried out, enhancing is complementary, has not only reduced load actuating quantity and the frequency, but also can improve integrally-regulated performance.If Fig. 2 is tool
Body flow chart of steps:
Step 1: obtaining general power need to the amount of tune and response time；
Step 2: based on general power need to the amount of tune and response time between each energy storage according to response time scale and response function
Rate carries out power distribution；
(1) the resident's temperature control type load (such as air-conditioning, refrigerator, water heater) that will have energy storage characteristic in region, and tradition
Energy storage constitutes virtual energy storage system VESS together；
(2) the analysis virtual energy storage system interior each quasi-tradition energy storage charge and discharge response time for being included, charge and discharge electroresponse function
Rate divides response time scale, the responding power range of different type energy storage, the method is as follows:
A. speed divides the response time scale T of the different type energy storage according to responseEi:
In formula, TEiIndicate the response time scale of i-th of energy storage, i=1,2 ..., n；Tms、Ts、Tm、Th, respectively indicate
The response time scale of Millisecond, second grade, minute grade, hour four grades of grade.
B. the responding power P of the different type energy storage is determined according to Bucket PrincipleE:
PE=min { Ppcs,k·CAh·UN}
In formula, PpcsIndicate the current transformer rated power of energy-storage system configuration；K is the specified charge-discharge magnification of energy storage ontology；
CAhFor the specified ampere-hour capacity of energy storage ontology；UNFor the voltage rating of energy storage ontology；This formula indicates that responding power chooses unsteady flow
The smaller value of device and connect energy storage ontology rated power.
C. the responding power value of several energy-storage systems obtained according to formula (2) is divided into following two rank:
In formula, PEiFor the responding power of i-th of energy storage, PkWExpression responding power is between 0-999kW, PMWIndicate response
Power is between 1MW- ∞.
(3) assume to be dispatched according to higher level and adjust power tune total needed for target obtains virtual energy storage in system command or region
Section amount PVESSWith required response speed TVESS, first time scale and responding power divide according to response between traditional energy storage each unit
With power, steps are as follows:
A. the energy storage that response time scale is met the requirements is chosen in n energy storage
E [i]=E (TEi≤TVESS), i=1,2....n
In formula, TVESSFor the response time；TEiFor the response time scale of i-th of traditional energy storage；E [i] is response time ruler
Degree meets i-th of energy storage of preset condition；N is energy-storage system number.
B. in selected traditional energy storage, according to energy storage charge state SOC and required regulation power, further selection currently may be used
Energy storage, selection gist are as follows
In formula, E [j] indicates that meet condition starts energy storage；PVESSFor general power need to the amount of tune, need energy storage when greater than zero
Electric discharge, needs energy storage to charge when less than zero；sociFor the state-of-charge of i-th of traditional energy storage；
SOCminFor the minimum limit value of state-of-charge, SOCmaxTo allow state-of-charge maximum value.
C. it is calculated in selected traditional energy storage and determines that performance number is less than or equal to PVESSEnergy storage
ΔPE[i]=PVESS-PE[i]
In formula, PVESSIt need to the amount of tune for general power；PE[i] is i-th of responding power that can start energy storage.
Difference is greater than zero and the smallest energy storage, calculating formula are as follows:
min(ΔPE[i]≥0)
In formula, PE[i] is the responding power that energy storage can be used selected by i-th.
D. according to Δ PETradition energy storage selected by sequence starting from small to large starts energy storage response function until reaching all
The sum of rate is less than or equal to total regulation power demand, i.e. following formula condition
ε1=min [(PVESS-∑PE[i])≥0]
It is recycled to traditional energy storage always starts general power and just distributes end；Or traditional energy storage has started general power also
It is unallocated complete；Or traditional energy storage is inactive complete but remaining energy storage responding power be all larger than current power need to the amount of tune, cannot open again
It is dynamic；Latter two then the amount of tune and need to have been turned on energy storage power and subtraction calculations load power need to the amount of tune according to general power.
Based on the energy storage responding power and the general power need to the amount of tune difference according to sequence starting pair from small to large
The energy storage answered terminates starting energy storage until meeting one of following conditions:
1) general power need to the amount of tune distribute；2) can have been started with energy storage；3) dump power need to the amount of tune much smaller than it is remaining can
With energy storage responding power.
The energy storage responding power and the general power need to the amount of tune difference calculating formula it is as follows:
ΔPE[i]=PVESS-PE[i]
In formula, PVESSIt need to the amount of tune for general power；PE[i] is i-th of responding power that can start energy storage.
Step 3: when the general power need to the amount of tune be greater than all the sum of responding powers for starting energy storage when, based on described
General power need to the sum of the amount of tune and all responding powers for starting energy storage calculated load need to adjust general power；And it need to be adjusted always based on load
Power and response time, which carry out each load according to response time scale, switch state and responding power between each load, needs Power Regulation
Rate distribution.
Total power regulation is subtracted into traditional energy storage regulation power value, needs regulation power value as load；
Pload=PVESS-PESUM
PVESSIt need to the amount of tune for general power；PloadGeneral power need to be adjusted for load,
In formula, PESUMFor all the sum of responding powers for starting energy storage；PE[j] is that j-th of bootable energy storage responds function
Rate, k are all energy storage quantity having been turned on；
(1) all kinds of temperature control type load responding power models for having energy storage characteristic are established:
In formula, PLIndicate the responding power of temperature control type load t moment；PratedIndicate the rated power of load；S (t) indicates t
Moment switch state, 1 indicates that switch closes, and 0 indicates that switch disconnects；Tin(t) Current Temperatures of temperature control load are indicated；TminIndicate temperature
Spend minimum；TmaxIndicate temperature maximum.
When the load need to adjust general power to be greater than 0, the load of the switch state closure is deferrable load；
When the load need to adjust general power less than 0, the load that the switch state disconnects is deferrable load；
(2) load that response time scale is met the requirements is chosen in n load
L [x]=L (TLx≤TVESS), x=1,2....m
In formula, TVESSFor the response time；TLxFor the response time of x-th of load；L [x] is full for the response time
X-th of load of sufficient preset condition；M indicates load sum.
(3) in selected load, according to load condition and required regulation power, currently available load is further selected,
Selection gist is as follows
In formula, SiIt (t) is the switch state of i-th of load t moment.
(4) it is calculated in selected load and determines that performance number is less than or equal to PloadLoad
ΔPL[i]=[(Pload-PL[i])≥0]
D. according to Δ PLLoad selected by sequence starting from small to large, until reach it is all start load responding power it
General power, i.e. following formula condition need to be adjusted with load is less than or equal to
ε2=min [(Pload-∑PL[j])≥0]
Embodiment 2
Based on the same inventive concept, the present invention also provides a kind of energy storage coordinated control system, the system comprises:
Obtain module: need to the amount of tune and response time for obtaining general power；
First distribution module: for based on general power need to the amount of tune and response time between each energy storage according to response time ruler
Degree and responding power carry out power distribution；
Second distribution module: for when the general power need to the amount of tune be greater than all the sum of responding powers for starting energy storage
When, based on the general power need to the sum of the amount of tune and all responding powers for starting energy storage calculated load need to adjust general power；And base
General power and response time need to be adjusted to carry out between each load according to response time scale, switch state and responding power in load
Each load needs adjusting power to distribute.
Preferably, comprising: determination unit, selecting unit and allocation unit；
The determination unit, for determining that response time scale meets the energy storage of preset condition based on the response time；
The selecting unit, need to the amount of tune and energy storage charge state for being based on the general power in the determining energy storage
Select current bootable energy storage；
The start unit, for based on the responding power and the general power that can start energy storage need to the amount of tune difference from small
To being sequentially allocated greatly.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is flow chart and side of the reference according to the method for the embodiment of the present application, system and computer program product
Block diagram describes.It should be understood that each process and box that can be realized by computer program instructions in flow chart and block diagram, with
And the combination of the process and box in flow chart and block diagram.Can provide these computer program instructions to general purpose computer, specially
With the processor of computer, Embedded Processor or other programmable data processing devices to generate a machine, so that passing through
The instruction that computer or the processor of other programmable data processing devices execute generates for realizing in one process of flow chart
Or the device for the function of being specified in multiple processes and one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
The manufacture of device is enabled, which realizes in one box of one or more flows of the flowchart and block diagram or multiple
The function of being specified in box.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and one, block diagram
The step of function of being specified in box or multiple boxes.
The above is only the embodiment of the present invention, are not intended to restrict the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent substitution, improvement and etc. done, be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (10)
1. a kind of energy storage control method for coordinating, which is characterized in that the described method includes:
Obtaining general power need to the amount of tune and response time；
Based on general power the amount of tune and response time power need to be carried out according to response time scale and responding power between each energy storage
Distribution；
When the general power need to the amount of tune be greater than all the sum of responding powers for starting energy storage when, need to the amount of tune based on the general power
General power need to be adjusted with the sum of all responding powers for starting energy storage calculated load；And when need to adjust general power and response based on load
Between carry out each load according to response time scale, switch state and responding power between each load adjusting power needed to distribute.
2. energy storage control method for coordinating as described in claim 1, which is characterized in that it is described based on general power need to the amount of tune and response
Time carries out power distribution according to response time scale and responding power between each energy storage, comprising:
Determine that response time scale meets the energy storage of preset condition based on the response time；
It need to the amount of tune and the current bootable energy storage of energy storage charge state selection based on the general power in the determining energy storage；
By general power need to responding power and the general power of the amount of tune based on energy storage need to the difference of the amount of tune be sequentially allocated from small to large
To energy storage can be started.
3. energy storage control method for coordinating as claimed in claim 2, which is characterized in that described determined based on the response time is rung
The calculating formula for answering time scale to meet the energy storage of preset condition is as follows:
E [i]=E (TEi≤TVESS), i=1,2....n
In formula, TVESSFor the response time；TEiFor the response time scale of i-th of energy storage；E [i] is that response time scale meets in advance
If i-th of energy storage of condition；N is energy storage number.
4. energy storage control method for coordinating as claimed in claim 3, which is characterized in that described to be based in the determining energy storage
The general power need to the amount of tune and energy storage charge state select the calculating formula of current bootable energy storage as follows:
In formula, E [j] indicates that meet condition starts energy storage；J is to meet in condition energy storage to start energy storage；PVESSFor total work
Rate need to the amount of tune；socjThe state-of-charge of energy storage can be started for j-th；SOCminFor the minimum limit value of state-of-charge, SOCmaxTo allow
State-of-charge maximum value.
5. energy storage control method for coordinating as described in claim 1, which is characterized in that it is described based on the general power need to the amount of tune and
The sum of all responding powers for starting energy storage calculated load need to adjust general power, and calculating formula is as follows:
Pload=PVESS-PESUM
In formula, PVESSIt need to the amount of tune for general power；PloadGeneral power need to be adjusted for load；PE[j] can open for j-th
Dynamic energy storage responding power；K is all bootable energy storage quantity；PESUMFor all the sum of responding powers for starting energy storage.
6. energy storage control method for coordinating as described in claim 1, which is characterized in that described to adjust general power and sound based on load
Carrying out each load according to response time scale, switch state and responding power between each load between seasonable needs adjusting power to distribute,
Include:
General power need to be adjusted by obtaining load；
Determine that response time scale meets the available load of preset condition based on the response time；
General power, switch state and load responding power can need to be adjusted to carry out each bear based on the load in load identified
Lotus power distribution.
7. energy storage control method for coordinating as claimed in claim 6, which is characterized in that described determined based on the response time is rung
The calculating formula for answering time scale to meet the available load of preset condition is as follows:
L [x]=L (TLx≤TVESS), x=1,2....m
In formula, TVESSFor the response time；TLxFor the response time of x-th of load；L [x] is the response time to meet preset condition
X-th of load；M indicates load sum.
8. energy storage control method for coordinating as claimed in claim 6, which is characterized in that described to use base in load identified
General power, switch state and load responding power need to be adjusted to carry out each load power distribution in the load, comprising:
Deferrable load is selected based on the switch state；
The responding power and load that calculate the deferrable load need to adjust the difference of general power；
Based on the difference, corresponding load is successively adjusted by the sequence of difference from small to large, is until load need to adjust general power
0。
9. a kind of energy storage coordinated control system, which is characterized in that the system comprises:
Obtain module: need to the amount of tune and response time for obtaining general power；
First distribution module: for based on general power need to the amount of tune and response time between each energy storage according to response time scale and
Responding power carries out power distribution；
Second distribution module: for when the general power need to the amount of tune be greater than all the sum of responding powers for starting energy storage when, base
In the general power need to the sum of the amount of tune and all responding powers for starting energy storage calculated load need to adjust general power；And it is based on load
General power and response time need to be adjusted to carry out each load according to response time scale, switch state and responding power between each load
Adjusting power is needed to distribute.
10. energy storage coordinated control system as claimed in claim 9, which is characterized in that first distribution module, comprising: really
Order member, selecting unit and allocation unit；
The determination unit, for determining that response time scale meets the energy storage of preset condition based on the response time；
The selecting unit, need to the amount of tune and energy storage charge state selection for being based on the general power in the determining energy storage
Current bootable energy storage；
The start unit, for based on the responding power and the general power that can start energy storage need to the amount of tune difference from small to large
It is sequentially allocated.
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| CN111244946A (en) * | 2020-02-18 | 2020-06-05 | 国网江苏省电力有限公司 | Method and device for regulating and controlling power generation and utilization resources of self-contained power plant |
| CN116683498A (en) * | 2023-08-01 | 2023-09-01 | 苏州水芯电子科技有限公司 | Power distribution method and energy storage device |
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