CN109245131A - Inhibit energy-storage system real-time control method, device and the equipment of prediction error - Google Patents
Inhibit energy-storage system real-time control method, device and the equipment of prediction error Download PDFInfo
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- 238000004146 energy storage Methods 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000033228 biological regulation Effects 0.000 claims abstract description 19
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 17
- 238000004364 calculation method Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 11
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- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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- H02J3/386—
-
- 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
-
- 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
- H02J3/50—Controlling the sharing of the out-of-phase component
-
- 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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- 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
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The invention discloses a kind of energy-storage system real-time control methods for inhibiting prediction error, by the power output predicted value for accessing wind power plant real-time active power output and rail vehicle roller test-rig, under the premise of meter and the constraint of energy-storage system state-of-charge and the constraint of charge and discharge overcurrent, by the power output for adjusting energy-storage system in real time, the more wind farm group macro-forecast errors in region are stabilized in tracking, so that wind farm group concentrates the power of grid entry point to inject as far as possible close to predicted value, improve the peak load regulation network originally formulated based on predicted value, the validity and robustness of frequency modulation and safe and stable operation control strategy, reduce operation control cost, and the control strategy lower power grid that cannot promptly follow up loses the risk of security and stability；And the energy-storage system by being mounted on the public grid entry point of wind farm group carries out real-time tracking adjusting, it is contemplated that the charged restrict of energy-storage system, charge and discharge overcurrent limiting factor inhibit wind power output prediction error to influence power grid bring.
Description
Technical field
The invention belongs to new energy power generation grid-connection control technology fields, and more precisely the present invention relates to a kind of inhibition regions
Energy-storage system real-time control method, device and the equipment of wind farm group power generation prediction error.
Background technique
While the generations of electricity by new energy such as wind-powered electricity generation, photovoltaic grid-connected brings environmental benefit to electric system, fluctuation, gap
Property characteristic, peak regulation, frequency modulation to power grid, safe and stable operation bring great challenge.Generation of electricity by new energy value it is reliable, accurate pre-
Survey can reduce it is this do not know give dispatching of power netwoks operation bring influence.However, the generations of electricity by new energy such as current wind-powered electricity generation, photovoltaic
Predicting Technique do not broken through completely yet.The design of current management and running strategy is generally basede on the predicted value of generation of electricity by new energy
It is designed, however, if predicted value is not accurate enough, it will bring biggish discomfort to original designed management and running strategy
Ying Xing, under serious conditions even can because of the adaptation of prevention or emergency control policy, have little time to carry out the reasons such as Emergency decision to electricity
Net safe and stable operation, which is brought, to be seriously threatened.
With the development of energy storage technology and gradually reducing for cost, the practical application of large scale electric network side energy storage becomes can
Energy.The quick control characteristic of energy storage makes that intermittence, the prediction error of fluctuation generation of electricity by new energy is inhibited to become with energy storage
It may.
Summary of the invention
The purpose of the present invention is: for overcome the deficiencies in the prior art, a kind of energy-storage system inhibiting prediction error is real-time
Control method, device and equipment, by adjusting the power output of energy-storage system in real time, tracking is stabilized more wind farm group macro-forecasts and is missed
Difference, so that wind farm group concentrates the power of grid entry point to inject as far as possible close to predicted value.
To achieve the above object, the technical solution adopted by the present invention；
A kind of energy-storage system real-time control method inhibiting prediction error, includes the following steps,
S1 is received simultaneously from each wind power plant real-time reception active power output information and active power output predictive information from grid entry point
Site information of voltage calculates the expectation active power output error amount Δ P of the public grid entry point of present periodtol(t), by Δ Ptol(t) make
For the active power output goal of regulation and control value P that energy-storage system current time is initialSto, ref(t), PSto, ref(t)=Δ Ptol(t), t is storage
At the time of energy system currently starts to adjust；
S2 is limited according to the state-of-charge of energy-storage system and carrying capacity, the target of adjustment energy-storage system active power output regulation
Value PSto, ref(t)；
S3, the target value P regulated and controled according to energy-storage system active power output adjustedSto, ref(t) ', consider energy-storage system
Overcurrent limitation, calculates the target current reference value i of energy-storage system present periodSto, ref(t)；
S4, according to target current reference value iSto, ref(t) charge and discharge adjusting is carried out, the active power output for tracking present period is pre-
Survey target.
The expectation active power output error amount Δ P of public grid entry pointtol(t), calculation formula is formula (1):
PWind, i(t) the active power output value of each wind power plant present period, P are obtained for wind farm monitoring systemFore, i(t) it is
Active power output predicted mean vote P of the wind farm monitoring system previous period about present periodFore, i(t), NwindFor wind power plant prison
Control system number.
Step S2 specifically includes the following steps:
If the current charged value SOC (t) of energy-storage system meets out: SOClow≤SOC(t)≤SOChig, then power output is adjusted
The target value P of regulationSto, ref(t) constant, PSto, ref(t) '=PSto, ref(t)；
If the current charged value of energy-storage system is in minimum state-of-charge, SOC (t)=SOC outlow, then judge PSto, ref
(t) whether it is greater than 0, if PSto, ref(t) it is greater than 0, enables PSto, ref(t) '=0；If PSto, ref(t) it is less than or equal to 0, PSto, ref
(t) it remains unchanged, PSto, ref(t) '=PSto, ref(t)；
If the current charged value of energy-storage system is in maximum state-of-charge, SOC (t)=SOC outhig, then judge PSto, ref
(t) whether less than 0, if PSto, ref(t) less than 0, P is enabledSto, ref(t) '=0；If PSto, ref(t) it is more than or equal to 0, PSto, ref
(t) it remains unchanged, PSto, ref(t) '=PSto, ref(t)；
Wherein, SOClowFor the charged minimum limit of energy-storage system；SOChigThe charged top limit of energy-storage system.
Step S3 specifically includes the following steps:
(301), the charging and discharging currents reference value i of energy-storage system is calculated according to formula (2)sto(t):
VstoIt (t) is energy-storage system grid entry point voltage；
(302), judge isto(t) whether meet energy-storage system charging and discharging currents limit, adjustment energy-storage system present period
Target current reference value iSto, ref(t), it specifically includes:
If iMax, ch< isto(t) < iMax, dich, then iSto, ref(t)=isto(t)；
If isto(t)≤iMax, ch, then iSto, ref(t)=iMax, ch；
If isto(t)≥iMax, dich, iSto, ref(t)=iMax, dich；
iMax, ch、iMax, dichRespectively energy-storage system charge and discharge maximum allowed current.
A kind of energy-storage system control device inhibiting prediction error, including information acquisition unit, expectation active power output error
It is worth computing unit, active power output regulation unit, present period target current calculation unit and charge and discharge and adjusts unit；
Information acquisition unit receives grid entry point information of voltage from grid entry point, from NwindA wind farm monitoring system obtains each
The active power output value of wind power plant present period is PWind, i(t), on wind farm monitoring system a period about the active of present period
Contribute predicted mean vote PFore, i(t)；
It is expected that active power output error amount computing unit calculates the expectation active power output error amount of the public grid entry point of present period
ΔPtol(t), by Δ Ptol(t) the active power output goal of regulation and control value P initial as energy-storage system current timeSto, ref(t),
PSto, ref(t)=Δ Ptol(t)；
Active power output regulates and controls unit and is limited according to the state-of-charge and carrying capacity of energy-storage system, and adjustment energy-storage system is active out
The target value P of power regulationSto, ref(t)；
The target value that present period target current calculation unit regulates and controls according to energy-storage system active power output adjusted
PSto, ref(t) ', consider the overcurrent limitation of energy-storage system, calculates the target current reference value i of energy-storage system present periodSto, ref
(t)；
Charge and discharge adjust unit according to target current reference value iSto, ref(t) charge and discharge adjusting is carried out, when tracking current
The active power output of section predicts target.
It is expected that active power output error amount computing unit calculates the expectation active power output error amount Δ P of public grid entry pointtol(t),
Calculation formula is formula (1):
Active power output regulates and controls the target value P of unit adjustment energy-storage system active power output regulationSto, ref(t) it specifically includes following
Step:
If the current charged value SOC (t) of energy-storage system meets out: SOClow≤SOC(t)≤SOChig, then power output is adjusted
The target value P of regulationSto, ref(t) constant, PSto, ref(t) '=PSto, ref(t)；
If the current charged value of energy-storage system is in minimum state-of-charge, SOC (t)=SOC outlow, then judge PSto, ref
(t) whether it is greater than 0, if PSto, ref(t) it is greater than 0, enables PSto, ref(t) '=0；If PSto, ref(t) it is less than or equal to 0, PSto, ref
(t) it remains unchanged, PSto, ref(t) '=PSto, ref(t)；
If the current charged value of energy-storage system is in maximum state-of-charge, SOC (t)=SOC outhig, then judge PSto, ref
(t) whether less than 0, if PSto, ref(t) less than 0, P is enabledSto, ref(t) '=0；If PSto, ref(t) it is more than or equal to 0, PSto, ref
(t) it remains unchanged, PSto, ref(t) '=PSto, ref(t)；
Wherein, SOClowFor the charged minimum limit of energy-storage system；SOChigThe charged top limit of energy-storage system.
The target current reference value i of present period target current calculation unit calculating energy-storage system present periodSto, ref(t)
Specifically includes the following steps:
(301), the charging and discharging currents reference value i of energy-storage system is calculated according to formula (2)sto(t):
VstoIt (t) is energy-storage system grid entry point voltage；
(302), judge isto(t) whether meet energy-storage system charging and discharging currents limit, adjustment energy-storage system present period
Target current reference value iSto, ref(t), it specifically includes:
If iMax, ch< isto(t) < iMax, dich, then iSto, ref(t)=isto(t)；
If isto(t)≤iMax, ch, then iSto, ref(t)=iMax, ch；
If isto(t)≥iMax, dich, iSto, ref(t)=iMax, dich；
iMax, ch、iMax, dichRespectively energy-storage system charge and discharge maximum allowed current.
A kind of calculating equipment, comprising: one or more processors, memory and one or more programs, one of them
Or multiple programs store in the memory and are configured as being executed by one or more of processors, it is one or more
A program includes the instruction for executing a kind of energy-storage system real-time control method for inhibiting prediction error.
A kind of computer readable storage medium storing one or more programs, one or more of programs include referring to
Enable, described instruction when executed by a computing apparatus so that it is described calculate equipment execute it is a kind of inhibit prediction error energy-storage system
Real-time control method.
The invention discloses it is a kind of inhibit prediction error energy-storage system real-time control method, device and equipment, meter and
Under the premise of the constraint of energy-storage system state-of-charge and the constraint of charge and discharge overcurrent, by adjusting the power output of energy-storage system in real time, track
The more wind farm group macro-forecast errors in region are stabilized, so that wind farm group concentrates the power injection of grid entry point as far as possible close to prediction
Value improves the validity and robust of the peak load regulation network, frequency modulation and safe and stable operation control strategy originally formulated based on predicted value
Property, significantly deviate the emergency adjustment of predicted value progress operation of power networks control strategy without contributing in real time in wind farm group, from
And reduce operation control cost and the control strategy lower power grid that cannot promptly follow up loses the risk of security and stability.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples；
Fig. 1 is a kind of flow chart for the energy-storage system real-time control method for inhibiting prediction error of the present invention；
Fig. 2 is the schematic diagram in the method for the present invention about energy-storage system control structure.
Specific embodiment
The invention will be further described with reference to the accompanying drawing and by specific embodiment, and following embodiment is descriptive
, it is not restrictive, this does not limit the scope of protection of the present invention.
In order to make technological means of the invention, creation characteristic, workflow, application method reach purpose and effect, and it is
It is easy to understand the evaluation method with reference to specific embodiments the present invention is further explained.
The invention will be further described with reference to the accompanying drawings and in conjunction with example.
As shown in Figure 1, a kind of energy-storage system real-time control method for inhibiting prediction error, specially inhibition regional wind power
The energy storage system control method of mass-sending electricity prediction error, includes the following steps,
N in certain regionwindA (Nwind>=1) the public grid entry point of wind power plant, has installed the energy-storage system of certain capacity,
Energy-storage system receives active power output information and active power output predictive information from each wind power plant in real time, receives grid entry point from grid entry point
Information of voltage.Then the energy-storage system inhibits the real-time control method of region wind farm group power generation prediction error, includes the following steps:
S1 receives simultaneously from each wind power plant real-time reception active power output information and active power output predictive information from grid entry point
Site information of voltage is t at the time of energy-storage system currently starts to adjust, from NwindA wind farm monitoring system obtains each wind-powered electricity generation
The active power output value of field present period is PWind, i(t) (i=1,2 ... Nwind), on wind farm monitoring system a period about current
The active power output predicted mean vote P of periodFore, i(t)；Calculate the expectation active power output error amount Δ of the public grid entry point of present period
Ptol(t), by Δ Ptol(t) the active power output goal of regulation and control value P initial as energy-storage system current timeSto, ref(t), PSto, ref
(t)=Δ Ptol(t)；
Here, energy-storage system realizes the adjusting amendment for predicting error per hour, therefore each slot setup is a hour,
To realize the peak load regulation network running optimizatin of hour grade.Energy-storage system real-time control schematic diagram is as shown in Figure 2.
S2 is limited according to the state-of-charge of energy-storage system and carrying capacity, the target of adjustment energy-storage system active power output regulation
Value PSto, ref(t) it (is realized by Fig. 2 " additional control link ")；
S3, the target value P regulated and controled according to energy-storage system active power output adjustedSto, ref(t) ', consider energy-storage system
Overcurrent limitation, calculates the target current reference value i of energy-storage system present periodSto, ref(t) (pass through Fig. 2 " additional control link "
It realizes)；
S4, according to target current reference value iSto, ref(t) charge and discharge adjusting is carried out, to track the active power output of present period
Predict that (by Fig. 2 " internal control and energy conversion link are realized ", follow current reference value is to realize that output power is adjusted for target
Energy storage internal control method be existing maturation method).
To give energy-storage system certain governing response time, and in order to avoid energy-storage system is frequently adjusted, this implementation
Example according to pre-set adjustings step delta t, before step S1, judgement and the previous period adjusting terminate between duration between
Every arrival adjusts step delta t, then enters step S1, realizes that circulation energy-storage system is adjusted, the step S5 in attached drawing 1 passes through Fig. 2
" additional control link " is realized.
The expectation active power output error amount Δ P of public grid entry pointtol(t), calculation formula is formula (1):
The step S2 specifically includes the following steps:
If the current charged value SOC (t) of energy-storage system meets out: SOClow≤SOC(t)≤SOChig, then power output is adjusted
The target value P of regulationSto, ref(t) constant, PSto, ref(t) '=PSto, ref(t)；
If the current charged value of energy-storage system is in minimum state-of-charge, SOC (t)=SOC outlow, then judge PSto, ref
(t) whether it is greater than 0, if PSto, ref(t) it is greater than 0, enables PSto, ref(t) '=0；If PSto, ref(t) it is less than or equal to 0, PSto, ref
(t) it remains unchanged, PSto, ref(t) '=PSto, ref(t)；
If the current charged value of energy-storage system is in maximum state-of-charge, SOC (t)=SOC outhig, then judge PSto, ref
(t) whether less than 0, if PSto, ref(t) less than 0, P is enabledSto, ref(t) '=0；If PSto, ref(t) it is more than or equal to 0, PSto, ref
(t) it remains unchanged, PSto, ref(t) '=PSto, ref(t)；
SOClowFor the charged minimum limit of energy-storage system；SOChigThe charged top limit of energy-storage system；SOClowEqual to energy storage system
Unite specified active 20%~30%；SOChigSpecified equal to energy-storage system active 100%.
The step S3 specifically includes the following steps:
(301), the charging and discharging currents reference value i of energy-storage system is calculated according to formula (2)sto(t):
VstoIt (t) is energy-storage system grid entry point voltage；
(302), judge isto(t) whether meet energy-storage system charging and discharging currents limit, and ungratified situation is adjusted
It is whole, it specifically includes:
If tMax, ch< isto(t) < iMax, dich, then iSto, ref(t)=isto(t)；
If isto(t)≤iMax, ch, then iSto, ref(t)=iMax, ch；
If isto(t)≥iMax, dich, iSto, ref(t)=iMax, dich。
iMax, ch、iMax, dichRespectively energy-storage system charge and discharge maximum allowed current is determined by the parameter that manufacturing firm gives
It is fixed.
Energy-storage system realizes the adjusting amendment for predicting error per hour, therefore each slot setup is a hour, with reality
The peak load regulation network running optimizatin of existing hour grade；The adjusting step delta t of energy-storage system can integrate the adjustment speed of energy-storage system, energy storage
Frequency is adjusted to economic influence, power grid for demands such as degree of regulation, is set according to artificial experience, generally at 1 second~5 points
Clock.
A kind of energy-storage system control device inhibiting region wind farm group power generation prediction error, including information acquisition unit,
It is expected that active power output error amount computing unit, active power output regulation unit, present period target current calculation unit and charge and discharge
Adjust unit；
Information acquisition unit receives grid entry point information of voltage from grid entry point, from NwindA wind farm monitoring system obtains each
The active power output value of wind power plant present period is PWind, i(t), on wind farm monitoring system a period about the active of present period
Contribute predicted mean vote PFore, i(t)；
It is expected that active power output error amount computing unit calculates the expectation active power output error amount of the public grid entry point of present period
ΔPtol(t), by Δ Ptol(t) the active power output goal of regulation and control value P initial as energy-storage system current timeSto, ref(t),
PSto, ref(t)=Δ Ptol(t)；
Active power output regulates and controls unit and is limited according to the state-of-charge and carrying capacity of energy-storage system, and adjustment energy-storage system is active out
The target value P of power regulationSto, ref(t)；
The target value that present period target current calculation unit regulates and controls according to energy-storage system active power output adjusted
PSto, ref(t) ', consider the overcurrent limitation of energy-storage system, calculates the target current reference value i of energy-storage system present periodSto, ref
(t)；
Charge and discharge adjust unit according to target current reference value iSto, ref(t) charge and discharge adjusting is carried out, when tracking current
The active power output of section predicts target.
It is expected that active power output error amount computing unit calculates the expectation active power output error amount Δ P of public grid entry pointtol(t),
Calculation formula is formula (1):
Active power output regulates and controls the target value P of unit adjustment energy-storage system active power output regulationSto, ref(t) it specifically includes following
Step:
If the current charged value SOC (t) of energy-storage system meets out: SOClow≤SOC(t)≤SOChig, then power output is adjusted
The target value P of regulationSto, ref(t) constant, PSto, ref(t) '=PSto, ref(t)；
If the current charged value of energy-storage system is in minimum state-of-charge, SOC (t)=SOC outlow, then judge PSto, ref
(t) whether it is greater than 0, if PSto, ref(t) it is greater than 0, enables PSto, ref(t) '=0；If PSto, ref(t) it is less than or equal to 0, PSto, ref
(t) it remains unchanged, PSto, ref(t) '=PSto, ref(t)；
If the current charged value of energy-storage system is in maximum state-of-charge, SOC (t)=SOC outhig, then judge PSto, ref
(t) whether less than 0, if PSto, ref(t) less than 0, P is enabledSto, ref(t) '=0；If PSto, ref(t) it is more than or equal to 0, PSto, ref
(t) it remains unchanged, PSto, ref(t) '=PSto, ref(t)；
SOClowFor the charged minimum limit of energy-storage system；SOChigThe charged top limit of energy-storage system；SOClowEqual to energy storage system
Unite specified active 20%~30%；SOChigSpecified equal to energy-storage system active 100%；
The target current reference value i of present period target current calculation unit calculating energy-storage system present periodSto, ref(t)
Specifically includes the following steps:
(301), the charging and discharging currents reference value i of energy-storage system is calculated according to formula (2)sto(t):
VstoIt (t) is energy-storage system grid entry point voltage；
(302), judge isto(t) whether meet energy-storage system charging and discharging currents limit, and ungratified situation is adjusted
It is whole, it specifically includes:
If iMax, ch< isto(t) < iMax, dich, then iSto, ref(t)=isto(t)；
If isto(t)≤iMax, ch, then iSto, ref(t)=iMax, ch；
If isto(t)≥iMax, dich, iSto, ref(t)=iMax, dich。
iMax, ch、iMax, dichRespectively energy-storage system charge and discharge maximum allowed current is determined by the parameter that manufacturing firm gives
It is fixed.
A kind of calculating equipment, comprising: one or more processors, memory and one or more programs, one of them
Or multiple programs store in the memory and are configured as being executed by one or more of processors, it is one or more
A program includes for executing a kind of energy-storage system real-time control method for inhibiting prediction error.
A kind of computer readable storage medium storing one or more programs, one or more of programs include referring to
Enable, described instruction when executed by a computing apparatus so that it is described calculate equipment execute it is a kind of inhibit prediction error energy-storage system
Real-time control method.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, knot is not been shown in detail
Structure and technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
Shield the present invention claims than feature more features expressly recited in each claim.More precisely, as right is wanted
As asking book to reflect, inventive aspect is all features less than single embodiment disclosed above.Therefore, it then follows specific
Thus claims of embodiment are expressly incorporated in the specific embodiment, wherein each claim itself is as this
The separate embodiments of invention.
Those skilled in the art should understand that the module of the equipment in example disclosed herein or unit or groups
Between can be arranged in equipment as depicted in this embodiment, or alternatively can be positioned at and the equipment in the example
In different one or more equipment.Module in aforementioned exemplary can be combined into a module or furthermore be segmented into multiple
Submodule.
Those skilled in the art will understand that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment
Be combined into one between module or unit or group between member or group, and furthermore they can be divided into multiple submodule or subelement or
Between subgroup.Other than such feature and/or at least some of process or unit exclude each other, it can use any
Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed
All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Benefit require, abstract and attached drawing) disclosed in each feature can carry out generation with an alternative feature that provides the same, equivalent, or similar purpose
It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed
Meaning one of can in any combination mode come using.
In addition, be described as herein can be by the processor of computer system or by executing by some in the embodiment
The combination of method or method element that other devices of the function are implemented.Therefore, have for implementing the method or method
The processor of the necessary instruction of element forms the device for implementing this method or method element.In addition, Installation practice
Element described in this is the example of following device: the device be used for implement as in order to implement the purpose of the invention element performed by
Function.
Various technologies described herein are realized together in combination with hardware or software or their combination.To the present invention
Method and apparatus or the process and apparatus of the present invention some aspects or part can take insertion tangible media, such as it is soft
The form of program code (instructing) in disk, CD-ROM, hard disk drive or other any machine readable storage mediums,
Wherein when program is loaded into the machine of such as computer etc, and is executed by the machine, the machine becomes to practice this hair
Bright equipment.
In the case where program code executes on programmable computers, calculates equipment and generally comprise processor, processor
Readable storage medium (including volatile and non-volatile memory and or memory element), at least one input unit, and extremely
A few output device.Wherein, memory is configured for storage program code；Processor is configured for according to the memory
Instruction in the said program code of middle storage executes the method for the present invention.
By way of example and not limitation, computer-readable medium includes computer storage media and communication media.It calculates
Machine readable medium includes computer storage media and communication media.Computer storage medium storage such as computer-readable instruction,
The information such as data structure, program module or other data.Communication media is generally modulated with carrier wave or other transmission mechanisms etc.
Data-signal processed passes to embody computer readable instructions, data structure, program module or other data including any information
Pass medium.Above any combination is also included within the scope of computer-readable medium.
As used in this, unless specifically stated, come using ordinal number " first ", " second ", " third " etc.
Description plain objects, which are merely representative of, is related to the different instances of similar object, and is not intended to imply that the object being described in this way must
Must have the time it is upper, spatially, sequence aspect or given sequence in any other manner.
Although the embodiment according to limited quantity describes the present invention, above description, the art are benefited from
It is interior it is clear for the skilled person that in the scope of the present invention thus described, it can be envisaged that other embodiments.Additionally, it should be noted that
Language used in this specification primarily to readable and introduction purpose and select, rather than in order to explain or limit
Determine subject of the present invention and selects.Therefore, without departing from the scope and spirit of the appended claims, for this
Many modifications and changes are obvious for the those of ordinary skill of technical field.For the scope of the present invention, to this
Invent done disclosure be it is illustrative and not restrictive, it is intended that the scope of the present invention be defined by the claims appended hereto.
Those skilled in the art can to the present invention be modified or modification design but do not depart from think of of the invention
Think and range.Therefore, if these modifications and changes of the present invention belongs to the claims in the present invention and its equivalent technical scope
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of energy-storage system real-time control method for inhibiting prediction error, which is characterized in that include the following steps,
S1 receives grid entry point from grid entry point from each wind power plant real-time reception active power output information and active power output predictive information
Information of voltage calculates the expectation active power output error amount Δ P of the public grid entry point of present periodtol(t), by Δ Ptol(t) as storage
It can system current time initial active power output goal of regulation and control value Psto,ref(t), t be energy-storage system currently start adjust when
It carves；
S2 is limited according to the state-of-charge of energy-storage system and carrying capacity, the target value of adjustment energy-storage system active power output regulation
Psto,ref(t)；
S3, the target value P regulated and controled according to energy-storage system active power output adjustedsto,ref(t) ', consider the mistake ductility limit of energy-storage system
System calculates the target current reference value i of energy-storage system present periodsto,ref(t)；
S4, according to target current reference value isto,ref(t) charge and discharge adjusting is carried out, the active power output prediction mesh of present period is tracked
Mark.
2. a kind of energy storage system control method for inhibiting region wind farm group power generation prediction error according to claim 1,
It is characterized in that,
The expectation active power output error amount Δ P of the public grid entry pointtol(t), calculation formula is formula (1):
Wherein, Pwind,i(t) the active power output value of each wind power plant present period, P are obtained for wind farm monitoring systemfore,i(t)
Active power output predicted mean vote of the wind farm monitoring system previous period about present period, NwindFor wind farm monitoring system
Number.
3. a kind of energy storage system control method for inhibiting region wind farm group power generation prediction error according to claim 1,
It is characterized in that,
The step S2 specifically includes the following steps:
If the current charged value SOC (t) of energy-storage system meets out: SOClow≤SOC(t)≤SOChig, then power output regulation is adjusted
Target value PSto, ref(t) constant；
If the current charged value SOC (t) of energy-storage system is in minimum state-of-charge out, P is judgedSto, ref(t) whether it is greater than 0,
If PSto, ref(t) it is greater than 0, enables PSto, ref(t) '=0；If Psto,ref(t) it is less than or equal to 0, PSto, ref(t) it remains unchanged,
Psto,ref(t) '=Psto,ref(t)；
If the current charged value of energy-storage system judges P in maximum state-of-charge outSto, ref(t) whether less than 0, if
PSto, ref(t) less than 0, P is enabledSto, ref(t) '=0；If Psto,ref(t) it is more than or equal to 0, Psto,ref(t) it remains unchanged；
Wherein, SOClowFor the charged minimum limit of energy-storage system；SOChigThe charged top limit of energy-storage system.
4. a kind of energy storage system control method for inhibiting region wind farm group power generation prediction error according to claim 1,
It is characterized in that,
The step S3 specifically includes the following steps:
(301), the charging and discharging currents reference value i of energy-storage system is calculated according to formula (2)sto(t):
VstoIt (t) is energy-storage system grid entry point voltage；
(302), judge isto(t) whether meet energy-storage system charging and discharging currents limit, adjust the target of energy-storage system present period
Current reference value isto,ref(t), it specifically includes:
If imax,ch< isto(t) < imax,dich, then isto,ref(t)=isto(t)；
If isto(t)≤imax,ch, then isto,ref(t)=imax,ch；
If isto(t)≥imax,dich, isto,ref(t)=imax,dich；
imax,ch、imax,dichRespectively energy-storage system charge and discharge maximum allowed current.
5. a kind of energy-storage system control device for inhibiting region wind farm group power generation prediction error, which is characterized in that
Regulate and control unit, present period target including information acquisition unit, expectation active power output error amount computing unit, active power output
Current calculation unit and charge and discharge adjust unit；
Information acquisition unit receives grid entry point information of voltage from grid entry point, from NwindA wind farm monitoring system obtains each wind-powered electricity generation
The active power output value of field present period is Pwind,i(t), active power output of the period about present period on wind farm monitoring system
Predicted mean vote Pfore,i(t)；
It is expected that active power output error amount computing unit calculates the expectation active power output error amount Δ P of the public grid entry point of present periodtol
(t), by Δ Ptol(t) the active power output goal of regulation and control value P initial as energy-storage system current timesto,ref(t)；
Active power output regulates and controls unit and is limited according to the state-of-charge and carrying capacity of energy-storage system, adjusts energy-storage system active power output tune
The target value P of controlsto,ref(t)；
The target value P that present period target current calculation unit regulates and controls according to energy-storage system active power output adjustedsto,ref
(t) ', consider the overcurrent limitation of energy-storage system, calculates the target current reference value i of energy-storage system present periodsto,ref(t)；
Charge and discharge adjust unit according to target current reference value isto,ref(t) charge and discharge adjusting is carried out, to track having for present period
Function power output prediction target.
6. a kind of energy-storage system control device for inhibiting region wind farm group power generation prediction error according to claim 5,
It is characterized in that,
It is expected that active power output error amount computing unit calculates the expectation active power output error amount Δ P of public grid entry pointtol(t), it calculates
Formula is formula (1):
7. a kind of energy-storage system control device for inhibiting region wind farm group power generation prediction error according to claim 5,
It is characterized in that,
Active power output regulates and controls the target value P of unit adjustment energy-storage system active power output regulationsto,ref(t) specifically includes the following steps:
If the current charged value SOC (t) of energy-storage system meets out: SOClow≤SOC(t)≤SOChig, then power output regulation is adjusted
Target value PSto, ref(t) constant, Psto,ref(t) '=Psto,ref(t)；
If the current charged value of energy-storage system judges P in minimum state-of-charge outsto,ref(t) whether it is greater than 0, if
PSto, ref(t) it is greater than 0, enables PSto, ref(t) '=0；If Psto,ref(t) it is less than or equal to 0, Psto,ref(t) it remains unchanged；
If the current charged value of energy-storage system judges P in maximum state-of-charge outsto,ref(t) whether less than 0, if
PSto, ref(t) less than 0, P is enabledSto, ref(t) '=0；If PSto, ref(t) it is more than or equal to 0, PSto, ref(t) it remains unchanged.
8. a kind of energy-storage system control device for inhibiting region wind farm group power generation prediction error according to claim 5,
It is characterized in that,
The target current reference value i of present period target current calculation unit calculating energy-storage system present periodsto,ref(t) specific
The following steps are included:
(301), the charging and discharging currents reference value i of energy-storage system is calculated according to formula (2)sto(t):
VstoIt (t) is energy-storage system grid entry point voltage；
(302), judge isto(t) whether meet energy-storage system charging and discharging currents limit, adjust the target of energy-storage system present period
Current reference value isto,ref(t), it specifically includes:
If imax,ch< isto(t) < imax,dich, then isto,ref(t)=isto(t)；
If isto(t)≤imax,ch, then isto,ref(t)=imax,ch；
If isto(t)≥imax,dich, isto,ref(t)=imax,dich；
imax,ch、imax,dichRespectively energy-storage system charge and discharge maximum allowed current.
9. a kind of calculating equipment characterized by comprising
One or more processors, memory and one or more programs, wherein one or more programs are stored in described deposit
It in reservoir and is configured as being executed by one or more of processors, one or more of programs include for executing basis
The instruction of method either in method described in Claims 1-4.
10. a kind of computer readable storage medium for storing one or more programs, which is characterized in that one or more of journeys
Sequence include instruction, described instruction when executed by a computing apparatus so that the calculatings equipment execution according to claim 1 to 4 institutes
Method either in the method stated.
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| CN112311216A (en) * | 2020-10-15 | 2021-02-02 | 湖南大学 | Current transformer overcurrent suppression method and device |
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