CN106026147B - A kind of distributed energy storage joint coordination control method for realizing Steam Generator in Load Follow - Google Patents
A kind of distributed energy storage joint coordination control method for realizing Steam Generator in Load Follow Download PDFInfo
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- CN106026147B CN106026147B CN201610538277.9A CN201610538277A CN106026147B CN 106026147 B CN106026147 B CN 106026147B CN 201610538277 A CN201610538277 A CN 201610538277A CN 106026147 B CN106026147 B CN 106026147B
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
The invention discloses a kind of distributed energy storage joint coordination control methods for realizing Steam Generator in Load Follow, the control method is on the basis of the constraints such as energy storage controllable period, power limit and capacity are considered, with client and the double-layer control structure of control centre, the Steam Generator in Load Follow of distributed energy storage is realized.Safety and the economy of operation of power networks can be improved using the control method, while can realize the distributed AC servo system to energy storage, suitable for the energy storage control disperseed on a large scale or the occasion of information limited communications resources.
Description
Technical field
The present invention relates to a kind of distributed energy storage joint coordination control methods for realizing Steam Generator in Load Follow, belong to energy management skill
Art field.
Background technology
In conventional electric power system, electric energy high efficiency can not store on a large scale, and generation and the consumption of electric power need Real-time Balancing.With
It energy storage technology and continues to develop maturation, energy storage is increasingly subject to pay attention to extensively in the application of field of power.Energy storage device can be with
It in peak load shifting, stabilizes load or new energy goes out fluctuation, adjusts frequency etc. and play a significant role, is rung in Demand-side
Should, the fields such as active distribution network there is great application potential.Energy storage can be divided into centralized energy storage by scale and combining form
With two class of distributed energy storage.Distributed energy storage can be applied in micro-capacitance sensor, coordinate with formation such as distributed generation resource, active loads,
Realize Demand Side Response；And home energy source storage and management is can be applied to, such as the residential energy sources storage that Tesla (CS) Koncern, Podebradska 186, Praha 9, Czechoslovakia releases
Product Powerwall, the novel household energy storage platform xStorage that Nissan releases etc..And plug-in electromobile
It is regarded as one kind of distributed energy storage.Under the scene popularized on a large scale in following micro-capacitance sensor, household energy storage, electric vehicle etc.,
A kind of large-scale distributed energy storage schedulable resource splendid as controllability, rationally regulates and controls it, can be substantially improved
The safety of power grid and economy.
Meanwhile traditional Steam Generator in Load Follow refers to the purpose for safety or economical operation, regulating generator group goes out
The target load of force tracking setting (is also believed to plan to contribute) curve.It if can be with the large-scale distributed energy storage of joint coordination
Charge and discharge plan realize Steam Generator in Load Follow, can equally realize the safety and economic operation of power grid.Currently with distributed energy storage into
Row Steam Generator in Load Follow still in the exploratory stage, due to distributed energy storage there are monomer small scale, the features such as quantity is big, distribution dispersion,
Heavier storage, calculating and communications burden may be brought according to traditional centerized fusion means, is not suitable for extensive
The joint coordination control of distributed energy storage.
Invention content
Present invention aims to solve the deficiencies of the prior art, and provides a kind of a kind of distributed energy storage joints for realizing Steam Generator in Load Follow
Control method for coordinating, this method is on the basis of the constraints such as energy storage controllable period, power limit and capacity are considered, with client
End and the double-layer control structure of control centre realize the Steam Generator in Load Follow of distributed energy storage.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of distributed energy storage connection for realizing Steam Generator in Load Follow
Control method for coordinating is closed, is included the following steps：
1) each client obtains energy storage essential information and user to set information from user side respectively；
2) each client calculates energy storage initial charge/discharge plan, and judges whether initial charge/discharge plan meets energy storage power
Constraint, if so, entering step 3)；If it is not, then return to step 1)；
3) control centre obtains Steam Generator in Load Follow target Gt, and count the total charge and discharge plan T of current energy storaget, and judge current storage
Whether the total charge and discharge plan of energy reaches stopping criterion for iteration, if so, entering step 5)；If it is not, it enters step 4)；
4) control centre calculates control signal, and is distributed to each client；Each client combines control signal solving-optimizing
Problem, optimization problem optimal solution are newer energy storage charge and discharge plan；
5) control centre stops iteration, and each energy storage is intended to be final charge and discharge plan by current charge and discharge and carries out charge and discharge
Electricity.
Specifically, in step 1), acquired energy storage essential information includes energy storage maximum capacity Emax, stored energy capacitance lower limit
Emin, maximum charge power Pin, maximum discharge power PoutWith control time interval of delta t.
Specifically, in step 1), acquired user to set information includes energy storage control time [tstart,tend], energy storage rise
Beginning ENERGY EstartIt is expected to terminate ENERGY E with energy storageendIf initial time tstartFor current time, then energy storage initial energy Estart
Without setting, as energy storage present energy.
Specifically, the concrete operations of step 2) are as follows：
21) client is according to energy storage initial energy EstartIt is expected to terminate ENERGY E with energy storageendCalculate initial charge/discharge plan
Pini：
22) judge PiniWith Pin、-PoutBetween magnitude relationship, if Pini＞ Pin, prompt user that setting is wrong, it is proposed that increase
Add energy storage initial energy Estart, reduce energy storage it is expected terminate ENERGY EendOr extend energy storage control time, and return to step 1)；Such as
Fruit Pini＜-Pout, prompt user that setting is wrong, it is proposed that reduce energy storage initial energy Estart, increase energy storage it is expected terminate ENERGY Eend
Or extend energy storage control time, and return to step 1)；If Pin≥Pini≥-Pout, withInitial charge/discharge meter for energy storage
It draws,Wherein, t ∈ [tstart,tend], it enters step 3).
Specifically, the concrete operations of step 3) are as follows：
31) the Steam Generator in Load Follow target that control centre obtains distributed energy storage from upper strata scheduling institution is Gt；Collect each client
Hold the current energy storage charge and discharge plan of statisticsWherein n is numbered for energy storage client, and k is current iteration number；It calculates current
The total charge and discharge plan of energy storageWherein N is energy storage total quantity；Set maximum iteration kmaxAnd convergence threshold ε；
32) stopping criterion for iteration is set, set stopping criterion for iteration includes stopping criterion for iteration I and iteration ends item
Part II；Wherein, setting stopping criterion for iteration I is：Current iteration number is more than or equal to maximum iteration, i.e. k >=kmax；Setting
Stopping criterion for iteration II is：Currently Euclidean distance is less than or equal to setting threshold between the total charge and discharge plan of energy storage and Steam Generator in Load Follow target
Value, i.e.,If any iteration end condition in stopping criterion for iteration I and stopping criterion for iteration II reaches
It arrives, then terminates iteration, turn to step 5)；If two stopping criterion for iteration do not meet, step 4) is turned to.
Specifically, the concrete operations of step 4) are as follows：41) control centre calculates control signalPublication control
Signal processedTo each client,
42) client is with ptFor optimized variable, with reference to the control signal provided in step 41), establish and minimize target letter
Number,
Its constraints：
Pin≥Pt≥-Pout；
Then under following constraints：
Establish Optimized model：
The optimal solution acquired is to number the newer charge and discharge plan of energy storage for being nIterations k adds 1, turns to step
It is rapid 3).
Due to the utilization of above-mentioned technical proposal, the present invention has following advantages compared with prior art：
1st, the distributed energy storage joint coordination control method of realization Steam Generator in Load Follow of the invention stores up the distribution of user side
Electric power system dispatching system can be included in, has given full play to the regulation and control potentiality of distributed energy storage, can effectively realize Steam Generator in Load Follow, is improved
The safety of operation of power networks and economy；
2nd, control method of the invention has fully considered the basic parameter of energy storage and user demand constraint, can be in not shadow
Under the premise of ringing user experience, the distributed AC servo system to energy storage is realized；
3rd, control method of the invention, using distributed AC servo system means, will most of storage and calculating pressure dissipation to each
Client locally carries out decision, suitable for the energy storage control disperseed on a large scale or the occasion of information limited communications resources in energy storage；
4th, control method of the invention, can effectively protect privacy of user, the charge and discharge plan of each energy storage only need to upload control
Center, what control centre assigned controls in signal only comprising total charge and discharge plan information of all energy storage and Steam Generator in Load Follow target
Information, third party can not therefrom analyze the charge and discharge plan for extracting certain independent energy storage, so as to which user's charge and discharge plan be avoided to let out
Dew.
Description of the drawings
Flow chart element of the attached drawing 1 for the distributed energy storage joint coordination control method of the present invention for realizing Steam Generator in Load Follow
Figure.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is further elaborated technical scheme of the present invention.
A kind of distributed energy storage joint coordination control method for realizing Steam Generator in Load Follow, flow diagram is as shown in Figure 1, specific
Step is as follows：
S11, the distributed clients mounted on each energy storage obtain the following essential information of energy storage from user side respectively：Energy storage
Maximum capacity Emax, stored energy capacitance lower limit Emin, maximum charge power Pin, maximum discharge power PoutWith control time interval of delta t；
Obtain following parameter set by user：Energy storage control time [tstart,tend], energy storage initial energy EstartIt is expected to terminate with energy storage
ENERGY EendIf initial time tstartFor current time, then energy storage initial energy EstartWithout setting, the as current energy of energy storage
Amount；
S12, each client calculate energy storage initial charge/discharge plan, and judge whether initial charge/discharge plan meets energy storage work(
Rate constrains, if so, entering step S13；If it is not, then return to step S11；Concrete operations are as follows：
S121, client are according to energy storage initial energy EstartIt is expected to terminate ENERGY E with energy storageendCalculate initial charge/discharge meter
Draw Pini：
S122, judge PiniWith Pin、-PoutBetween magnitude relationship, if Pini＞ Pin, prompt user that setting is wrong, it is proposed that
Increase energy storage initial energy Estart, reduce energy storage it is expected terminate ENERGY EendOr extend energy storage control time, and return to step S11；
If Pini＜-Pout, prompt user that setting is wrong, it is proposed that reduce energy storage initial energy Estart, increase energy storage it is expected terminate energy
EendOr extend energy storage control time, and return to step S11；If Pin≥Pini≥-Pout, withInitial charge/discharge for energy storage
Plan,Wherein, t ∈ [tstart,tend], enter step S13；
S13, control centre obtain Steam Generator in Load Follow target Gt, and count the total charge and discharge plan T of current energy storaget, and judge current
Whether the total charge and discharge plan of energy storage reaches stopping criterion for iteration, if so, entering step S15；If it is not, enter step S14；Specifically
Operation is as follows：
The Steam Generator in Load Follow target that S131, control centre obtain distributed energy storage from upper strata scheduling institution is Gt；Collect each visitor
The current energy storage charge and discharge plan of family end statisticsWherein n is numbered for energy storage client, and k is current iteration number；It calculates and works as
The preceding total charge and discharge plan of energy storageWherein N is energy storage total quantity；Set maximum iteration kmaxAnd convergence threshold
Value ε；
S132, setting stopping criterion for iteration, set stopping criterion for iteration include stopping criterion for iteration I and iteration ends
Condition II；Wherein, setting stopping criterion for iteration I is：Current iteration number is more than or equal to maximum iteration, i.e. k >=kmax；If
Determining stopping criterion for iteration II is：Currently Euclidean distance is less than or equal to setting threshold between the total charge and discharge plan of energy storage and Steam Generator in Load Follow target
Value, i.e.,If any iteration end condition in stopping criterion for iteration I and stopping criterion for iteration II reaches
It arrives, then terminates iteration, turn to step S15；If two stopping criterion for iteration do not meet, step S14 is turned to；
S14, control centre calculate control signal, and are distributed to each client；It is excellent that each client combines control signal solution
Change problem, optimization problem optimal solution are newer energy storage charge and discharge plan；
S141, control centre calculate control signalPublication control signalTo each client,
S142, client are with ptFor optimized variable, with reference to the control signal provided in step S141, establish and minimize target
Function,
Its constraints：
Pin≥Pt≥-Pout；
Then under following constraints：
Establish Optimized model：
The optimal solution acquired is to number the newer charge and discharge plan of energy storage for being nIterations k adds 1, turns to step
Rapid S13；
S15, control centre stop iteration, and each energy storage is intended to be final charge and discharge plan by current charge and discharge and carries out charge and discharge
Electricity realizes Steam Generator in Load Follow.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and be implemented, and it is not intended to limit the scope of the present invention, all according to the present invention
The equivalent change or modification that Spirit Essence is made should all cover within the scope of the present invention.
Claims (3)
1. a kind of distributed energy storage joint coordination control method for realizing Steam Generator in Load Follow, which is characterized in that include the following steps：
1) each client obtains energy storage essential information and user to set information from user side respectively；
2) each client calculates energy storage initial charge/discharge plan, and judges whether initial charge/discharge plan meets energy storage power about
Beam, if so, entering step 3)；If it is not, then return to step 1)；
3) control centre obtains Steam Generator in Load Follow target Gt, and count the total charge and discharge plan T of current energy storaget, and judge that current energy storage is total
Whether charge and discharge plan reaches stopping criterion for iteration, if so, entering step 5)；If it is not, it enters step 4)；
4) control centre calculates control signal, and is distributed to each client；Each client combines control signal solving-optimizing problem,
Optimization problem optimal solution is newer energy storage charge and discharge plan；
5) control centre stops iteration, and each energy storage is intended to be final charge and discharge plan by current charge and discharge and carries out charge and discharge；
In step 1), acquired energy storage essential information includes energy storage maximum capacity Emax, stored energy capacitance lower limit Emin, maximum charge
Power Pin, maximum discharge power PoutWith control time interval △ t；
In step 1), acquired user to set information includes energy storage control time [tstart,tend], energy storage initial energy Estart
It is expected to terminate ENERGY E with energy storageendIf initial time tstartFor current time, then energy storage initial energy EstartWithout setting, i.e.,
For energy storage present energy；
The concrete operations of step 2) are as follows：
21) client is according to energy storage initial energy EstartIt is expected to terminate ENERGY E with energy storageendCalculate initial charge/discharge plan Pini：
22) judge PiniWith Pin、-PoutBetween magnitude relationship, if Pini>Pin, prompt user that setting is wrong, it is proposed that increase energy storage
Initial energy Estart, reduce energy storage it is expected terminate ENERGY EendOr extend energy storage control time, and return to step 1)；If Pini<-
Pout, prompt user that setting is wrong, it is proposed that reduce energy storage initial energy Estart, increase energy storage it is expected terminate ENERGY EendOr extend storage
Energy control time, and return to step 1)；If Pin≥Pini≥-Pout, withFor the initial charge/discharge plan of energy storage,
Wherein, t ∈ [tstart,tend], it enters step 3).
2. control method according to claim 1, which is characterized in that the concrete operations of step 3) are as follows：
31) the Steam Generator in Load Follow target that control centre obtains distributed energy storage from upper strata scheduling institution is Gt；Collect each client statistics
Current energy storage charge and discharge planWherein n is numbered for energy storage client, and k is current iteration number；It is total to calculate current energy storage
Charge and discharge planWherein N is energy storage total quantity；Set maximum iteration kmaxAnd convergence threshold ε；
32) stopping criterion for iteration is set, set stopping criterion for iteration includes stopping criterion for iteration I and stopping criterion for iteration
Ⅱ；Wherein, setting stopping criterion for iteration I is：Current iteration number is more than or equal to maximum iteration, i.e. k >=kmax；Setting changes
It is for end condition II：Currently Euclidean distance is less than or equal to given threshold between the total charge and discharge plan of energy storage and Steam Generator in Load Follow target,
I.e.If any iteration end condition in stopping criterion for iteration I and stopping criterion for iteration II reaches,
Iteration is then terminated, turns to step 5)；If two stopping criterion for iteration do not meet, step 4) is turned to.
3. control method according to claim 2, which is characterized in that the concrete operations of step 4) are as follows：41) control centre
Calculate control signalPublication control signalTo each client,
42) client is with ptFor optimized variable, with reference to the control signal provided in step 41), establish and minimize object function,
Its constraints：
Pin≥Pt≥-Pout；
Then under following constraints：
Establish Optimized model：
The optimal solution acquired is to number the newer charge and discharge plan of energy storage for being nIterations k adds 1, turns to step 3).
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| CN102508950A (en) * | 2011-10-14 | 2012-06-20 | 广东电网公司电力科学研究院 | Regional dispatching automatic system and method for communication between regional dispatching automatic system and remote monitoring diagnosis centre |
| CN105515027A (en) * | 2015-08-06 | 2016-04-20 | 樊朝晖 | Load curve configurable energy storage micro-grid control method |
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| US8121618B2 (en) * | 2009-10-28 | 2012-02-21 | Digimarc Corporation | Intuitive computing methods and systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102508950A (en) * | 2011-10-14 | 2012-06-20 | 广东电网公司电力科学研究院 | Regional dispatching automatic system and method for communication between regional dispatching automatic system and remote monitoring diagnosis centre |
| CN105515027A (en) * | 2015-08-06 | 2016-04-20 | 樊朝晖 | Load curve configurable energy storage micro-grid control method |
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Denomination of invention: A Distributed Energy Storage Joint Coordinated Control Method for Load Tracking Effective date of registration: 20230614 Granted publication date: 20180622 Pledgee: China Construction Bank Zhangjiagang branch Pledgor: JIANGSU CLOUDERGY ELECTRIC POWER TECHNOLOGY CO.,LTD. Registration number: Y2023980044002 |
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