CN110362147A - Margin of power control method and system based on photovoltaic system - Google Patents
Margin of power control method and system based on photovoltaic system Download PDFInfo
- Publication number
- CN110362147A CN110362147A CN201910634841.0A CN201910634841A CN110362147A CN 110362147 A CN110362147 A CN 110362147A CN 201910634841 A CN201910634841 A CN 201910634841A CN 110362147 A CN110362147 A CN 110362147A
- Authority
- CN
- China
- Prior art keywords
- photovoltaic module
- photovoltaic
- duty ratio
- power
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
- G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Electrical Variables (AREA)
Abstract
This application involves a kind of margin of power control method and system based on photovoltaic system, belong to technical field of photovoltaic power generation, this method comprises: obtaining the current output voltage of photovoltaic module and currently exporting electric current；MPPT maximum power point tracking is carried out when the operating mode of the photovoltaic system is MPPT maximum power point tracking mode, so that photovoltaic module work is in maximum power point；When the operating mode of the photovoltaic system is margin of power control model, controls the photovoltaic module and work in constant current area；When photovoltaic reserve capacity reaches preset value, the difference of the output power according to present output power and after cutting down adjusts the subsequent perturbation direction of the photovoltaic module and duty ratio；It can solve the problem of existing margin of power control method can not determine the subsequent perturbation direction of photovoltaic system and duty ratio；Provide the mode of a kind of subsequent perturbation direction of determining photovoltaic system and duty ratio.
Description
Technical field
This application involves a kind of margin of power control method and system based on photovoltaic system belong to photovoltaic power generation technology neck
Domain.
Background technique
Photovoltaic (Photovoltaic, PV) system is a kind of photovoltaic effect using solar cell semiconductor material, will too
Sun can be converted to a kind of new power generating system of electric energy.Since photovoltaic power generation equipment does not have rotary part, disturbed in major power
Dynamic device cannot provide inertial response in PV system, and therefore, system inertia and frequency regulation capability can reduce.Based on this,
It carries out the algorithm that power grid frequency modulation is exported with power smooth using photovoltaic system itself to be suggested, i.e., the margin of power controls (Power
Reserve Control, PRC) algorithm.
The patent of invention " novel photovoltaic reserve capacity control method " of Publication No. CN109491445A discloses one kind can
With photovoltaic reserve capacity controlling party that is real-time, accurately predicting photovoltaic peak power output and rapidly adjust photovoltaic reserve capacity
Method.This method comprises: the voltage and current to photovoltaic system samples, voltage and current value V (k), I (k) are obtained；It is transported according to power grid
Row state sends the operating mode of adjustment signal control photovoltaic system, which includes MPPT maximum power point tracking mode and storage
Standby power control mode；Under reserve capacity control model, make current photovoltaic output power PpvThe P being adjusted to below MPPlimit
Place, is calculated the value of short circuit current Isc: Isc=I (k)-mV (k)；M=Δ I/ Δ V=(I (k)-I (k-1))/(V (k)-V
(k-1))；Acquire maximum power point electric current ImppValue: Impp=KIscIsc, KIscIndicate maximum power point electric current and short circuit current
Ratio；According to photovoltaic output characteristics, maximum power point voltage V is obtainedmpp；Acquire Pmpp, Pmpp=VmppImpp；It is stored up according to photovoltaic
Operating point is adjusted in standby power Δ P.
Although described method provide one kind to predict P in the case where working environment changesmppAnd according to mains frequency
Variation control photovoltaic reserve capacity method, but this method can not perturbation direction to next step and step-length carry out selection and sentence
It is disconnected.
Summary of the invention
This application provides a kind of margin of power control method and system based on photovoltaic system, can solve existing function
The problem of rate deposit control method can not determine the subsequent perturbation direction of photovoltaic system and duty ratio.The application provides following technology
Scheme:
In a first aspect, providing a kind of margin of power control method based on photovoltaic system, which comprises
It obtains the current output voltage of photovoltaic module and currently exports electric current；
MPPT maximum power point tracking is carried out when the operating mode of the photovoltaic system is MPPT maximum power point tracking mode, so that
The photovoltaic module work is in maximum power point；
When the operating mode of the photovoltaic system is margin of power control model, the photovoltaic module is controlled in constant current area
Work；
When photovoltaic reserve capacity reaches preset value, the difference of the output power according to present output power and after cutting down is adjusted
The subsequent perturbation direction of the photovoltaic module and duty ratio.
Optionally, it is subsequent to adjust the photovoltaic module for the difference of the output power according to present output power and after cutting down
Perturbation direction and duty ratio, comprising:
When the absolute value of the difference of output power in the present output power and after cutting down is greater than preset threshold, under
Formula adjusts the subsequent perturbation direction of the photovoltaic module and duty ratio:
Wherein, Δ d is the duty ratio of subsequent time；ΔdmaxFor the first default duty ratio；-ΔdmaxFirst default duty ratio
Inverted value；PpvFor present output power；PlimitFor the output power after reduction, PthFor preset threshold.
Optionally, it is subsequent to adjust the photovoltaic module for the difference of the output power according to present output power and after cutting down
Perturbation direction and duty ratio, comprising:
When the absolute value of the difference of output power in the present output power and after cutting down is less than or equal to preset threshold,
The subsequent perturbation direction of the photovoltaic module and duty ratio are adjusted by following formula:
Wherein, Δ d is the duty ratio of subsequent time；ΔdminFor the second default duty ratio；-ΔdminSecond default duty ratio
Inverted value；PpvFor present output power；PlimitFor the output work after reduction.
Optionally, the control photovoltaic module is after constant current area work, further includes:
Determine whether the photovoltaic module works in constant current area by following formula；
In photovoltaic module work in constant current area, triggering execution is described when photovoltaic reserve capacity reaches preset value,
The difference of output power according to present output power and after cutting down adjusts the subsequent perturbation direction of the photovoltaic module and duty ratio
The step of；
Wherein, mthTo preset slope threshold value；mnFor current slope；InCurrently to export electric current；In-1For a upper collection period
Collected upper output electric current；VnFor current output voltage；Vn-1For the collected upper output voltage of a upper collection period.
Optionally, described when the photovoltaic module does not operate in constant current area, the method also includes:
It controls the photovoltaic module to work near the maximum power point, the duty ratio root near the maximum power point
It is determined according to the input voltage and output voltage of power converter.
Optionally, the output power after the reduction is the difference of maximum power point output power and the preset value.
Second aspect provides a kind of margin of power control system based on photovoltaic system, the system comprises:
Photovoltaic module converts solar energy into electric energy based on photovoltaic effect, and the photovoltaic module is converted by power
Device is connected with load；
The power converter, for realizing the energy transmission between the photovoltaic module and the load；
It is set to the voltage acquisition component and current acquisition component of the photovoltaic module output end, the voltage acquisition component
For acquiring the current output voltage of the photovoltaic module；The current acquisition component is for acquiring the current of the photovoltaic module
Export electric current；
The controller being connected respectively with the voltage acquisition component, the current acquisition component and the power converter,
The controller is used to execute the margin of power control method based on photovoltaic system of first aspect offer.
The beneficial effects of the present application are as follows: the current output voltage by obtaining photovoltaic module exports electric current with current；?
The operating mode of photovoltaic system carries out MPPT maximum power point tracking when being MPPT maximum power point tracking mode, so that photovoltaic module work exists
Maximum power point；When the operating mode of photovoltaic system is margin of power control model, control photovoltaic module works in constant current area；
When photovoltaic reserve capacity reaches preset value, the difference of the output power according to present output power and after cutting down adjusts photovoltaic module
Subsequent perturbation direction and duty ratio；It can solve existing margin of power control method and can not determine that photovoltaic system is subsequent and disturb
The problem of dynamic direction and duty ratio；Provide the mode of a kind of subsequent perturbation direction of determining photovoltaic system and duty ratio.
Above description is only the general introduction of technical scheme, in order to better understand the technological means of the application,
And can be implemented in accordance with the contents of the specification, with the preferred embodiment of the application and cooperate attached drawing below detailed description is as follows.
Detailed description of the invention
Fig. 1 is the structural representation for the margin of power control system based on photovoltaic system that the application one embodiment provides
Figure；
Fig. 2 is the flow chart for the margin of power control method based on photovoltaic system that the application one embodiment provides；
Fig. 3 is the schematic diagram for the photovoltaic property curve that the application one embodiment provides；
Fig. 4 is the flow chart for the margin of power control method based on photovoltaic system that another embodiment of the application provides；
Fig. 5 is the schematic diagram of the photovoltaic property curve in the margin of power control process that the application one embodiment provides；
Fig. 6 is the signal of the photovoltaic property curve in the margin of power control process that another embodiment of the application provides
Figure.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the application is described in further detail.Implement below
Example is not limited to scope of the present application for illustrating the application.
Fig. 1 is the structural representation for the margin of power control system based on photovoltaic system that the application one embodiment provides
Figure, as shown in Figure 1, the system includes at least: photovoltaic module 110, power converter 120, voltage acquisition component 130, electric current are adopted
Collect component 140, controller 150 and load 160.
Photovoltaic module 110 is used to convert solar energy into electric energy based on photovoltaic effect.Optionally, photovoltaic module 110
It is made of multiple silicon solar cells.Photovoltaic module 110 is connected by power converter 120 with load 160.
Power converter 120 is for realizing the energy transmission between photovoltaic module and load.Power converter 120 is to load
160 output electric currents.
Voltage acquisition component 130 and current acquisition component 140 are set to 110 output end of photovoltaic module.Voltage acquisition component
130 for acquiring the current output voltage of photovoltaic module.Voltage acquisition component 130 can be used for voltage sensor, voltmeter etc.
In the device of collection voltages, the present embodiment is not limited the type of voltage acquisition component 130.Current acquisition component 140 is used for
Acquire the current output electric current of photovoltaic module.Current acquisition component 140 can be current sensor, ammeter etc. for acquiring electricity
The device of stream, the present embodiment do not limit the type of current acquisition component 140.
The controller 150 being connected respectively with voltage acquisition component 130, current acquisition component 140 and power converter 120.
Controller 150 is used to obtain the current output voltage of photovoltaic module 110 and currently exports electric current；In the operating mode of photovoltaic system
To carry out MPPT maximum power point tracking when MPPT maximum power point tracking mode, so that the work of photovoltaic module 110 is in maximum power point；In light
When the operating mode of volt system is margin of power control model, control photovoltaic module works in constant current area；In photovoltaic reserve capacity
When reaching preset value, the difference of the output power according to present output power and after cutting down adjusts the subsequent disturbance of photovoltaic module 110
Direction and duty ratio.
Optionally, the difference of the output power according to present output power and after cutting down adjusts that photovoltaic module 110 is subsequent disturbs
Dynamic direction and duty ratio, comprising:
When the absolute value of the difference of output power in present output power and after cutting down is greater than preset threshold, pass through following formula tune
Save the subsequent perturbation direction of photovoltaic module 110 and duty ratio:
Wherein, Δ d is the duty ratio of subsequent time；ΔdmaxFor the first default duty ratio；-ΔdmaxFirst default duty ratio
Inverted value；PpvFor present output power；PlimitFor the output power after reduction, PthFor preset threshold.
When the absolute value of the difference of output power in present output power and after cutting down is less than or equal to preset threshold, pass through
Following formula adjusts the subsequent perturbation direction of photovoltaic module 110 and duty ratio:
Wherein, Δ d is the duty ratio of subsequent time；ΔdminFor the second default duty ratio；-ΔdminSecond default duty ratio
Inverted value；PpvFor present output power；PlimitFor the output work after reduction.
Optionally, control photovoltaic module 110 is after constant current area work, further includes: determines photovoltaic module 110 by following formula
Whether work in constant current area；In the work of photovoltaic module 110 in constant current area, triggering, which is executed, reaches preset value in photovoltaic reserve capacity
When, the difference of the output power according to present output power and after cutting down adjusts the subsequent perturbation direction of photovoltaic module and duty ratio
Step；
Wherein, mthTo preset slope threshold value；mnFor current slope；InCurrently to export electric current；In-1For a upper collection period
Collected upper output electric current；VnFor current output voltage；Vn-1For the collected upper output voltage of a upper collection period.
When photovoltaic module 110 does not operate in constant current area, it is attached in maximum power point that controller 150 controls photovoltaic module 110
Close to work, the duty ratio near maximum power point is determined according to the input voltage and output voltage of power converter.
Wherein, the output power after reduction is the difference of maximum power point output power and preset value.That is, Plimit=Pmpp-
Δp.Wherein, PlimitFor the output power after reduction, Δ p is preset value.
In conclusion the margin of power control system provided in this embodiment based on photovoltaic system, is obtained by controller
The current output voltage of photovoltaic module and current output electric current；It is MPPT maximum power point tracking mode in the operating mode of photovoltaic system
Shi Jinhang MPPT maximum power point tracking, so that photovoltaic module work is in maximum power point；It is power in the operating mode of photovoltaic system
When laying in control model, control photovoltaic module works in constant current area；When photovoltaic reserve capacity reaches preset value, according to current defeated
The difference of power and the output power after cutting down adjusts the subsequent perturbation direction of photovoltaic module and duty ratio out；It can solve existing
Margin of power control method can not determine the problem of subsequent perturbation direction of photovoltaic system and duty ratio；Provide a kind of determining light
The mode of the subsequent perturbation direction of volt system and duty ratio.
Fig. 2 is the flow chart for the margin of power control method based on photovoltaic system that the application one embodiment provides, this
Embodiment is applied in this way in the margin of power control system shown in FIG. 1 based on photovoltaic system, and each step is held
Row main body be the system in controller 150 for be illustrated.This method includes at least following steps:
Step 201, it obtains the current output voltage of photovoltaic module and currently exports electric current.
Step 202, MPPT maximum power point tracking is carried out when the operating mode of photovoltaic system is MPPT maximum power point tracking mode,
So that photovoltaic module work is in maximum power point.
Step 203, when the operating mode of photovoltaic system is margin of power control model, photovoltaic module is controlled in constant current area
Work.
With reference to photovoltaic property curve shown in Fig. 3, after margin of power control model is activated, photovoltaic module is from maximum power
Point is mobile to constant current area.
Step 204, the output power when photovoltaic reserve capacity reaches preset value, according to present output power and after cutting down
Difference adjust the subsequent perturbation direction of photovoltaic module and duty ratio.
Optionally, when the absolute value of the difference of the output power in present output power and after cutting down is greater than preset threshold, lead to
It crosses following formula and adjusts the subsequent perturbation direction of photovoltaic module and duty ratio:
Wherein, Δ d is the duty ratio of subsequent time；ΔdmaxFor the first default duty ratio；-ΔdmaxFirst default duty ratio
Inverted value；PpvFor present output power；PlimitFor the output power after reduction, PthFor preset threshold.
When the absolute value of the difference of output power in present output power and after cutting down is less than or equal to preset threshold, pass through
Following formula adjusts the subsequent perturbation direction of photovoltaic module and duty ratio:
Wherein, Δ d is the duty ratio of subsequent time；ΔdminFor the second default duty ratio；-ΔdminSecond default duty ratio
Inverted value；PpvFor present output power；PlimitFor the output work after reduction.
Optionally, control photovoltaic module is after constant current area work, further includes:
Determine whether photovoltaic module works in constant current area by following formula；
In photovoltaic module work in constant current area, triggering is executed when photovoltaic reserve capacity reaches preset value, according to current
The difference of output power after output power and reduction adjusts the step of subsequent perturbation direction of photovoltaic module and duty ratio；
Wherein, mthTo preset slope threshold value；mnFor current slope；InCurrently to export electric current；In-1For a upper collection period
Collected upper output electric current；VnFor current output voltage；Vn-1For the collected upper output voltage of a upper collection period.
When photovoltaic module does not operate in constant current area, control photovoltaic module works near maximum power point, maximum power
Duty ratio near point is determined according to the input voltage and output voltage of power converter.
Wherein, the output power after reduction is the difference of maximum power point output power and preset value.
In order to be more clearly understood that the margin of power control method provided by the present application based on photovoltaic system, mentioned with reference to Fig. 4
The flow chart of another margin of power control method based on photovoltaic system supplied, this method include at least following steps:
Step 41, current output voltage V is obtainednWith current output electric current In；
Step 42, operating mode and preset value Δ p are obtained；
Operating mode includes MPPT maximum power point tracking mode and margin of power control model.Schematically, operating mode is logical
Flag expression is crossed, when the value of Flag is 0, operating mode is MPPT maximum power point tracking mode；When the value of Flag is 1, work
Mode is margin of power control model.
Step 43, determine that operating mode is MPPT maximum power point tracking mode or margin of power control model；In Working mould
When formula is MPPT maximum power point tracking mode, step 44 is executed；When operating mode is margin of power control model, step is executed
45；
Step 44, MPPT maximum power point tracking is carried out, so that the output power of photovoltaic module is peak power output, is held again
Row step 41；
At this point, Pmpp=Vn×In。
Step 45, m is calculatedn=(In-In-1)/(Vn-Vn-1) result；In mnGreater than mthAnd when less than 0, step 46 is executed；
In mnMore than or equal to 0 or mnLess than or equal to mthWhen, execute step 410；
Step 46, P is calculatedmpp=Vmpp×Impp；Plimit=PmppThe result of Δ p；
Step 47, compare | Pn-Plimit| with PthBetween size；| Pn-Plimit| it is greater than PthWhen, execute step 48；?
|Pn-Plimit| it is less than or equal to PthWhen, execute step 49；
Step 48, it is calculate by the following formula to obtain the duty ratio of subsequent time, executes step 41；
Step 49, it is calculate by the following formula to obtain the duty ratio of subsequent time, executes step 41；
Step 410, control photovoltaic module works near maximum power point, dnew=f (Vmpp, Vdc), execute step 41.
Wherein, dnewFor the duty ratio of subsequent time, VmppFor voltage value (the input electricity of power converter of maximum power point
Pressure value)；VdcFor the output voltage values of power converter.
Wherein, f (Vmpp, Vdc) it is duty ratio with VmppAnd VdcThe function of transformation, the function can be the light to photovoltaic module
Volt linearity curve is fitted.
Based on the above method, with reference to Fig. 5 and photovoltaic property curve shown in fig. 6.Wherein, Fig. 5 is illumination variation, photovoltaic storage
Photovoltaic output power P in the case of standby power invariabilitypv, voltage Vpv, photovoltaic reserve capacity Δ P and electric current IpvCurve；Fig. 6 is
Illumination-constant, the photovoltaic output power P under reserve capacity situation of changepv, voltage Vpv, photovoltaic reserve capacity Δ P, electric current Ipv's
Curve.
In conclusion the margin of power control method provided in this embodiment based on photovoltaic system, by obtaining photovoltaic mould
The current output voltage of block and current output electric current；It is carried out when the operating mode of photovoltaic system is MPPT maximum power point tracking mode
MPPT maximum power point tracking, so that photovoltaic module work is in maximum power point；It is margin of power control in the operating mode of photovoltaic system
When molding formula, control photovoltaic module works in constant current area；When photovoltaic reserve capacity reaches preset value, according to present output power
And the difference of the output power after reduction adjusts the subsequent perturbation direction of photovoltaic module and duty ratio；It can solve existing power storage
The problem of standby control method can not determine the subsequent perturbation direction of photovoltaic system and duty ratio；Provide a kind of determining photovoltaic system
The mode of subsequent perturbation direction and duty ratio.
Optionally, the application is also provided with a kind of computer product, which includes computer-readable storage medium
Matter is stored with program in the computer readable storage medium, and described program is loaded by processor and executed to realize above-mentioned side
The margin of power control method based on photovoltaic system of method embodiment.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (7)
1. a kind of margin of power control method based on photovoltaic system, which is characterized in that the described method includes:
It obtains the current output voltage of photovoltaic module and currently exports electric current；
MPPT maximum power point tracking is carried out when the operating mode of the photovoltaic system is MPPT maximum power point tracking mode, so that described
Photovoltaic module works in maximum power point；
When the operating mode of the photovoltaic system is margin of power control model, the photovoltaic module is controlled in constant current area work
Make；
When photovoltaic reserve capacity reaches preset value, described in the difference adjusting of the output power according to present output power and after cutting down
The subsequent perturbation direction of photovoltaic module and duty ratio.
2. the method according to claim 1, wherein the output work according to present output power and after cutting down
The difference of rate adjusts the subsequent perturbation direction of the photovoltaic module and duty ratio, comprising:
When the absolute value of the difference of output power in the present output power and after cutting down is greater than preset threshold, pass through following formula tune
Save the subsequent perturbation direction of the photovoltaic module and duty ratio:
Wherein, Δ d is the duty ratio of subsequent time；ΔdmaxFor the first default duty ratio；-ΔdmaxFirst default duty ratio takes
Converse value；PpvFor present output power；PlimitFor the output power after reduction, PthFor preset threshold.
3. the method according to claim 1, wherein the output work according to present output power and after cutting down
The difference of rate adjusts the subsequent perturbation direction of the photovoltaic module and duty ratio, comprising:
When the absolute value of the difference of output power in the present output power and after cutting down is less than or equal to preset threshold, pass through
Following formula adjusts the subsequent perturbation direction of the photovoltaic module and duty ratio:
Wherein, Δ d is the duty ratio of subsequent time；ΔdminFor the second default duty ratio；-ΔdminSecond default duty ratio takes
Converse value；PpvFor present output power；PlimitFor the output work after reduction.
4. method according to any one of claims 1 to 3, which is characterized in that the control photovoltaic module is in constant current area
After work, further includes:
Determine whether the photovoltaic module works in constant current area by following formula；
In photovoltaic module work in constant current area, triggering execution is described when photovoltaic reserve capacity reaches preset value, according to
The difference of output power after present output power and reduction adjusts the step of the subsequent perturbation direction of the photovoltaic module and duty ratio
Suddenly；
Wherein, mthTo preset slope threshold value；mnFor current slope；InCurrently to export electric current；In-1For the acquisition of a upper collection period
To it is upper one output electric current；VnFor current output voltage；Vn-1For the collected upper output voltage of a upper collection period.
5. according to the method described in claim 4, it is characterized in that, described when the photovoltaic module does not operate in constant current area,
The method also includes:
It controls the photovoltaic module to work near the maximum power point, the duty ratio near the maximum power point is according to function
The input voltage and output voltage of rate converter determine.
6. method according to any one of claims 1 to 3, which is characterized in that the output power after the reduction is maximum work
The difference of rate point output power and the preset value.
7. a kind of margin of power control system based on photovoltaic system, which is characterized in that the system comprises:
Photovoltaic module converts solar energy into electric energy based on photovoltaic effect, the photovoltaic module by power converter with
Load is connected；
The power converter, for realizing the energy transmission between the photovoltaic module and the load；
It is set to the voltage acquisition component and current acquisition component of the photovoltaic module output end, the voltage acquisition component is used for
Acquire the current output voltage of the photovoltaic module；The current acquisition component is used to acquire the current output of the photovoltaic module
Electric current；
The controller being connected respectively with the voltage acquisition component, the current acquisition component and the power converter, it is described
Controller requires 1 to 6 any margin of power control method based on photovoltaic system for perform claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910634841.0A CN110362147B (en) | 2019-07-15 | 2019-07-15 | Power reserve control method and system based on photovoltaic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910634841.0A CN110362147B (en) | 2019-07-15 | 2019-07-15 | Power reserve control method and system based on photovoltaic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110362147A true CN110362147A (en) | 2019-10-22 |
| CN110362147B CN110362147B (en) | 2021-08-20 |
Family
ID=68219312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910634841.0A Active CN110362147B (en) | 2019-07-15 | 2019-07-15 | Power reserve control method and system based on photovoltaic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110362147B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659625A (en) * | 2021-08-18 | 2021-11-16 | 西交利物浦大学 | Power control method and device of photovoltaic system and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102177636A (en) * | 2008-08-12 | 2011-09-07 | 英格蒂姆能源公司 | System and method for power management in a photovoltaic installation |
| CN107491137A (en) * | 2017-09-29 | 2017-12-19 | 特变电工西安电气科技有限公司 | A kind of variable step constant speed drop volume limit power MPPT perturbation motion methods |
| CN109491445A (en) * | 2018-11-16 | 2019-03-19 | 西交利物浦大学 | Novel photovoltaic reserve capacity control method |
-
2019
- 2019-07-15 CN CN201910634841.0A patent/CN110362147B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102177636A (en) * | 2008-08-12 | 2011-09-07 | 英格蒂姆能源公司 | System and method for power management in a photovoltaic installation |
| CN107491137A (en) * | 2017-09-29 | 2017-12-19 | 特变电工西安电气科技有限公司 | A kind of variable step constant speed drop volume limit power MPPT perturbation motion methods |
| CN109491445A (en) * | 2018-11-16 | 2019-03-19 | 西交利物浦大学 | Novel photovoltaic reserve capacity control method |
Non-Patent Citations (2)
| Title |
|---|
| ARIYA SANGWONGWANICH 等: "Sensorless Reserved Power Control Strategy for Two-Stage Grid-Connected Photovoltaic Systems", 《2016 IEEE 7TH INTERNATIONAL SYMPOSIUM ON POWER ELECTRONICS FOR DISTRIBUTED GENERATION SYSTEMS》 * |
| FARSHAD SOLTANIAN: "A Stable Power Reserve Control Method in Photovoltaic Systems Using I-V Curve Characteristics", 《2019 10TH INTERNATIONAL POWER ELECTRONICS, DRIVE SYSTEMS AND TECHNOLOGIES CONFERENCE》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659625A (en) * | 2021-08-18 | 2021-11-16 | 西交利物浦大学 | Power control method and device of photovoltaic system and storage medium |
| CN113659625B (en) * | 2021-08-18 | 2023-09-05 | 西交利物浦大学 | Power control method, equipment and storage medium of photovoltaic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110362147B (en) | 2021-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2010235955B2 (en) | Integrated Real-Time Power and Solar Farm Control System | |
| CN102570868A (en) | System and method for power conversion | |
| CN107992153A (en) | A kind of photovoltaic maximum power point-tracing control method | |
| CN110034584B (en) | Photovoltaic power station self-adaptive reactive voltage control method considering reactive power abundance | |
| CN102591399A (en) | Perturbation and observation method for tracking maximum power point of photovoltaic grid-connected generating system | |
| CN110474371A (en) | A kind of scene hydrogen multipotency source integrated system | |
| CN113991706B (en) | Active support type photovoltaic power station integrated power control system and method | |
| CN110362147A (en) | Margin of power control method and system based on photovoltaic system | |
| Singh et al. | An improved P&O MPPT algorithm for single stage three-phase grid integrated solar PV system | |
| Salhi et al. | A maximum power point tracking photovoltaic system using a proportional integral regulator | |
| AU2010236032B2 (en) | Systems and methods for regulating power in renewable energy sources | |
| CN110445183A (en) | Photovoltaic converter autonomous mode method for handover control in micro-grid system | |
| TW201817111A (en) | Device for stabilizing grid voltage by controlling real and reactive powers of energy storage | |
| CN104113079B (en) | MPPT control method and system | |
| WO2022057363A1 (en) | Photovoltaic direct-current direct-feed power generation method and apparatus based on controllable power supply | |
| CN110445122B (en) | Direct-current micro-grid distributed autonomous coordination control method capable of remarkably improving bus voltage deviation | |
| CN109962490B (en) | Power scheduling control method of power generation system | |
| WO2020039537A1 (en) | Control device, control method, and control system | |
| CN105186557A (en) | Grid-connected inverter control system and control method thereof | |
| CN114552676B (en) | Schedulable distributed energy system network construction control method | |
| Korada et al. | DC bus voltage control in hybrid AC/DC microgrid system | |
| CN103631309B (en) | The MPPT control method of single-stage photovoltaic inverter | |
| Akhtar et al. | Flexible hybrid system power quality improvement using advanced control architecture | |
| CN108183508A (en) | Control method of the photovoltaic DC-to-AC converter under two-way MPPT input conditions | |
| CN115498851B (en) | Intelligent current control method for inverter of photovoltaic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |