CN114243790B - Photovoltaic system based on optimization algorithm - Google Patents
Photovoltaic system based on optimization algorithm Download PDFInfo
- Publication number
- CN114243790B CN114243790B CN202111661975.5A CN202111661975A CN114243790B CN 114243790 B CN114243790 B CN 114243790B CN 202111661975 A CN202111661975 A CN 202111661975A CN 114243790 B CN114243790 B CN 114243790B
- Authority
- CN
- China
- Prior art keywords
- power generation
- photovoltaic power
- generation module
- module
- time
- 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.)
- Active
Links
- 238000005457 optimization Methods 0.000 title claims abstract description 10
- 238000010248 power generation Methods 0.000 claims abstract description 150
- 238000012544 monitoring process Methods 0.000 claims abstract description 98
- 238000012545 processing Methods 0.000 claims abstract description 54
- 238000005286 illumination Methods 0.000 claims abstract description 36
- 238000004146 energy storage Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
- H02J2300/26—The renewable source being solar energy of photovoltaic origin involving maximum power point tracking control for photovoltaic sources
-
- 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
Abstract
The invention provides a photovoltaic system based on an optimization algorithm, which comprises a photovoltaic power generation module, an energy storage module, an internal monitoring module, an external monitoring module and an MPPT control processing module; the photovoltaic power generation module is connected with the energy storage module, and the energy storage module is used for storing the electric quantity output by the photovoltaic power generation module; the internal monitoring module is used for detecting the current and the voltage when the photovoltaic power generation module operates; the external monitoring module is used for detecting the illumination condition of the area where the photovoltaic power generation module is located and the working temperature of the photovoltaic power generation module; and the internal monitoring module and the external monitoring module are respectively connected with the MPPT control processing module. The tracking method and the tracking device can improve the tracking of the maximum power of the photovoltaic power generation and improve the power transmission efficiency so as to solve the problem that the power transmission efficiency of the existing photovoltaic power generation is insufficient.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation and energy storage, in particular to a photovoltaic system based on an optimization algorithm.
Background
Photovoltaic power generation is a technology of directly converting light energy into electric energy by using the photovoltaic effect of a semiconductor interface. The solar energy power generation system mainly comprises a solar panel (assembly), a controller and an inverter, and the main components of the system are electronic components. The solar cells are connected in series and then are packaged and protected to form a large-area solar cell module, and then the photovoltaic power generation device is formed by matching with components such as a power controller and the like. The MPPT controller is a fully-named 'maximum power point tracking' solar controller, is an upgrading and updating product of a traditional solar charging and discharging controller, can detect the power generation voltage of a solar panel in real time and track the maximum voltage current Value (VI), so that a system charges a storage battery by maximum power output.
In the prior art, when an MPPT method is used for tracking current and voltage of a photovoltaic power generation panel, the tracking method and tracking accuracy used by the MPPT method are insufficient, the maximum power of the photovoltaic power generation panel is determined by both voltage and current, and the current and voltage are not as high as possible, and when the voltage continuously rises to a high point, the current is in a falling state, and the power at this time is not necessarily at the highest point.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a photovoltaic system based on an optimization algorithm, which can improve the tracking of the maximum power of photovoltaic power generation and improve the power transmission efficiency so as to solve the problem that the power transmission efficiency of the existing photovoltaic power generation is insufficient.
In order to achieve the purpose, the invention is realized by the following technical scheme: a photovoltaic system based on an optimization algorithm comprises a photovoltaic power generation module, an energy storage module, an internal monitoring module, an external monitoring module and an MPPT control processing module;
the photovoltaic power generation module is connected with the energy storage module, and the energy storage module is used for storing the electric quantity output by the photovoltaic power generation module;
the internal monitoring module is used for detecting the current and the voltage when the photovoltaic power generation module operates;
the external monitoring module is used for detecting the illumination condition of the area where the photovoltaic power generation module is located and the working temperature of the photovoltaic power generation module; the internal monitoring module and the external monitoring module are respectively connected with the MPPT control processing module;
the MPPT control processing module is used for processing the data acquired by the internal monitoring module and the external monitoring module and controlling the photovoltaic power generation module to keep the optimal power to output the electric quantity.
Further, the internal monitoring module comprises a current monitoring unit and a voltage monitoring unit, wherein the current monitoring unit is used for monitoring the current value of the photovoltaic power generation module, and the voltage monitoring unit is used for monitoring the working voltage of the photovoltaic power generation module.
Furthermore, the external monitoring module comprises an illumination monitoring unit and a temperature monitoring unit, the illumination monitoring unit is used for detecting the illumination amount of the area where the photovoltaic power generation module is located, and the temperature monitoring unit is used for detecting the working temperature of the photovoltaic power generation module.
Further, the MPPT control processing module is configured with a first processing unit configured with a first processing strategy, the first processing strategy including: acquiring the illumination quantity of the area where the photovoltaic power generation module is located for a first time through an illumination monitoring unit at every interval of a first time period, and sequentially marking the acquired illumination quantity of the area where the photovoltaic power generation module is located as Gz 1-Gzm, wherein Gz1 represents the illumination quantity of the area where the photovoltaic power generation module is located acquired for the first time within the first time, Gzm represents the illumination quantity of the area where the photovoltaic power generation module is located acquired for the mth time within the first time, and m represents the number of the first time;
the method comprises the steps that the working temperature of the photovoltaic power generation module for the first time is obtained through a temperature monitoring unit at every interval of the first time period, and the obtained working temperature of the photovoltaic power generation module is marked as Tg 1-Tgm in sequence, wherein Tg1 represents the working temperature of the photovoltaic power generation module obtained for the first time in the first time, and Tgm represents the working temperature of the photovoltaic power generation module obtained for the mth time in the first time;
substituting the obtained illumination quantity of the area where the photovoltaic power generation module is located for the first times and the working temperature of the photovoltaic power generation module into a detection reference value formula to obtain a detection reference value;
and when the detection reference value is greater than or equal to the first detection threshold value, controlling the internal monitoring module to operate.
Further, the detection reference value formula is configured to:
wherein Cj is a detection reference value, a1 is a conversion coefficient of the illumination quantity of the area where the photovoltaic power generation module is located, and a2 is a conversion coefficient of the working temperature of the photovoltaic power generation module.
Further, the MPPT control processing module is configured with a second processing unit configured with a second processing policy, the second processing policy including: acquiring current values of the photovoltaic power generation modules for a second time through the current monitoring unit every second time period, and sequentially marking the acquired current values of the photovoltaic power generation modules as Ig1 values Ign, wherein Ig1 represents the current value of the photovoltaic power generation module acquired for the first time in the second time, Ign represents the current value of the photovoltaic power generation module acquired for the nth time in the second time, and n represents the number of the second time;
acquiring the working voltage of the photovoltaic power generation module for the second time at every second interval time period through a voltage monitoring unit, and sequentially marking the acquired working voltage of the photovoltaic power generation module as Ug 1-Ugn, wherein Ug1 represents the working voltage of the photovoltaic power generation module acquired for the first time within the second time, and Ugn represents the working voltage of the photovoltaic power generation module acquired for the nth time within the second time;
substituting the obtained current value of the photovoltaic power generation module of the second times and the working voltage of the photovoltaic power generation module into a fluctuation reference value formula to obtain a power fluctuation value;
when the power fluctuation value is larger than or equal to the first fluctuation threshold value, increasing the working voltage of the photovoltaic power generation module of the first voltage amount once every third time period;
when the power fluctuation value is greater than or equal to the second fluctuation threshold value and smaller than the first fluctuation threshold value, increasing the working voltage of the photovoltaic power generation module of the second voltage amount once every third time period;
and when the power fluctuation value is smaller than a second fluctuation threshold value, maintaining the current working voltage of the photovoltaic power generation module.
Further, the fluctuation reference value formula is configured to:
(ii) a Wherein Wgb is the power fluctuation value.
Further, the MPPT control processing module is configured with a third processing unit configured with a third processing policy, the third processing policy including: when the working voltage of the photovoltaic power generation module of the first voltage quantity or the second voltage quantity is increased once every third time period, the output power of the photovoltaic power generation module is continuously detected, k times of continuous output power are obtained every first detection times, and the obtained k times of output power are substituted into a power detection formula to obtain a power reference value; if the obtained power reference value can be stabilized within a preset power range, the increase of the working voltage can be stopped, and the stable output power is kept, so that the power transmission efficiency is improved, and the high efficiency of power storage is ensured.
And when the obtained power reference value is less than or equal to the first power reference threshold value, stopping increasing the working voltage of the photovoltaic power generation module.
Further, the power detection formula is configured to:
wherein Wgc is a power reference value, and Ws 1-Wsk are obtained k times of continuous output power.
The invention has the beneficial effects that: according to the photovoltaic power generation system, the electric quantity output by the photovoltaic power generation module can be stored through the energy storage module; the current and the voltage of the photovoltaic power generation module during operation can be detected through the internal monitoring module in the power generation process; the external monitoring module can detect the illumination condition of the area where the photovoltaic power generation module is located and the working temperature of the photovoltaic power generation module; the internal monitoring module and the external monitoring module are respectively connected with the MPPT control processing module; and finally, the MPPT control processing module can process the data acquired by the internal monitoring module and the external monitoring module, control the photovoltaic power generation module to keep the optimal power to output electric quantity, monitor the illumination quantity and the working temperature, and can improve the timely and accurate monitoring of the output electric quantity of the photovoltaic power generation module and improve the efficiency of power transmission and storage.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of the module connection of the present invention;
fig. 2 is a schematic block diagram of the system of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 and 2, a photovoltaic system based on an optimization algorithm includes a photovoltaic power generation module, an energy storage module, an internal monitoring module, an external monitoring module, and an MPPT control processing module; the optimal operating point of a solar panel is called the maximum power point, and it depends mainly on the operating temperature of the panel and the current light level. The maximum power points of the solar panel are different under different temperatures and illumination intensities, and photovoltaic maximum power tracking is needed to enable the solar panel to work at the maximum power point as much as possible.
The photovoltaic power generation module is connected with the energy storage module, and the energy storage module is used for storing the electric quantity output by the photovoltaic power generation module.
The internal monitoring module is used for detecting the current and the voltage when the photovoltaic power generation module operates; the internal monitoring module comprises a current monitoring unit and a voltage monitoring unit, the current monitoring unit is used for monitoring the current value of the photovoltaic power generation module, the voltage monitoring unit is used for monitoring the working voltage of the photovoltaic power generation module, and the current monitoring unit and the voltage monitoring unit can monitor by adopting a current voltmeter.
The external monitoring module is used for detecting the illumination condition of the area where the photovoltaic power generation module is located and the working temperature of the photovoltaic power generation module; the internal monitoring module and the external monitoring module are respectively connected with the MPPT control processing module; the external monitoring module comprises an illumination monitoring unit and a temperature monitoring unit, the illumination monitoring unit is used for detecting the illumination quantity of the area where the photovoltaic power generation module is located, and the temperature monitoring unit is used for detecting the working temperature of the photovoltaic power generation module. The monitoring unit adopts the illuminometer to measure, and the temperature monitoring unit adopts temperature sensor to measure.
The MPPT control processing module is used for processing the data acquired by the internal monitoring module and the external monitoring module and controlling the photovoltaic power generation module to keep the optimal power to output the electric quantity.
The MPPT control processing module is configured with a first processing unit configured with a first processing policy, the first processing policy including: acquiring the illumination quantity of the area where the photovoltaic power generation module is located for a first time through an illumination monitoring unit at every interval of a first time period, and sequentially marking the acquired illumination quantity of the area where the photovoltaic power generation module is located as Gz 1-Gzm, wherein Gz1 represents the illumination quantity of the area where the photovoltaic power generation module is located acquired for the first time within the first time, Gzm represents the illumination quantity of the area where the photovoltaic power generation module is located acquired for the mth time within the first time, and m represents the number of the first time; specifically, the first time period is set to six minutes, and the first number is set to eight times.
The working temperature of the photovoltaic power generation module of a first time is obtained through the temperature monitoring unit at every interval of a first time period, and the obtained working temperature of the photovoltaic power generation module is marked as Tg 1-Tgm in sequence, wherein Tg1 represents the working temperature of the photovoltaic power generation module obtained for the first time within the first time, and Tgm represents the working temperature of the photovoltaic power generation module obtained for the mth time within the first time;
substituting the obtained illumination quantity of the area where the photovoltaic power generation module is located for the first times and the working temperature of the photovoltaic power generation module into a detection reference value formula to obtain a detection reference value;
and when the detection reference value is greater than or equal to the first detection threshold value, controlling the internal monitoring module to operate.
The detection reference value formula is configured to:
the method includes the steps that Cj is a detection reference value, a1 is a conversion coefficient of the light quantity of an area where a photovoltaic power generation module is located, a2 is a conversion coefficient of the working temperature of the photovoltaic power generation module, reference coefficients obtained by a1 and a2 through multiple experiments can balance the proportion between the light quantity and the working temperature, values of a1 and a2 are both larger than zero, specifically, in the reference experiment, the conversion coefficient of the light quantity is set to be 0.35, and the conversion coefficient of the working temperature is set to be 0.285.
The MPPT control processing module is configured with a second processing unit configured with a second processing policy, and the second processing policy includes: acquiring current values of the photovoltaic power generation modules for a second time through the current monitoring unit every second time period, and sequentially marking the acquired current values of the photovoltaic power generation modules as Ig1 values Ign, wherein Ig1 represents the current value of the photovoltaic power generation module acquired for the first time within the second time, Ign represents the current value of the photovoltaic power generation module acquired for the nth time within the second time, and n represents the number of the second time; specifically, the second time period may be set to ten minutes, and the second number may be set to ten times.
Acquiring the working voltage of the photovoltaic power generation module for the second time at every second interval time period through a voltage monitoring unit, and sequentially marking the acquired working voltage of the photovoltaic power generation module as Ug 1-Ugn, wherein Ug1 represents the working voltage of the photovoltaic power generation module acquired for the first time within the second time, and Ugn represents the working voltage of the photovoltaic power generation module acquired for the nth time within the second time;
substituting the obtained current value of the photovoltaic power generation module of the second times and the working voltage of the photovoltaic power generation module into a fluctuation reference value formula to obtain a power fluctuation value;
when the power fluctuation value is larger than or equal to the first fluctuation threshold value, increasing the working voltage of the photovoltaic power generation module of the first voltage quantity once every third time period;
when the power fluctuation value is greater than or equal to the second fluctuation threshold value and smaller than the first fluctuation threshold value, increasing the working voltage of the photovoltaic power generation module of the second voltage amount once every third time period;
and when the power fluctuation value is smaller than a second fluctuation threshold value, maintaining the current working voltage of the photovoltaic power generation module.
The fluctuation reference value formula is configured to:
(ii) a Wgb is the power fluctuation value, wherein the power fluctuation value is the difference between the power value at each time and the average value of the population.
The MPPT control processing module is configured with a third processing unit configured with a third processing policy, and the third processing policy includes: when the working voltage of the photovoltaic power generation module of the first voltage quantity or the second voltage quantity is increased once every third time period, the specific third time period is set to be three minutes, the first voltage quantity and the second voltage quantity are set according to the actual scale of the photovoltaic power generation module, the output power of the photovoltaic power generation module is continuously detected, k times of continuous output power are obtained every first detection times, and the obtained k times of output power are substituted into a power detection formula to obtain a power reference value; if the obtained power reference value can be stabilized within a preset power range, the increase of the working voltage can be stopped, and the stable output power is kept, so that the power transmission efficiency is improved, and the high efficiency of power storage is ensured.
And when the obtained power reference value is less than or equal to the first power reference threshold value, stopping increasing the working voltage of the photovoltaic power generation module.
The power detection formula is configured to:
wherein Wgc is a power reference value, Ws 1-Wsk are obtained k times of continuous output power, the output power is determined according to the fluctuation condition of the power obtained each time, and when the fluctuation is within a certain range, the improvement of the working power can be stoppedAnd (6) pressing.
The working principle is as follows: according to the photovoltaic power generation system, the electric quantity output by the photovoltaic power generation module can be stored through the energy storage module; the current and the voltage of the photovoltaic power generation module during operation can be detected through the internal monitoring module in the power generation process; the external monitoring module can detect the illumination condition of the area where the photovoltaic power generation module is located and the working temperature of the photovoltaic power generation module; the internal monitoring module and the external monitoring module are respectively connected with the MPPT control processing module; and finally, the MPPT control processing module can process the data acquired by the internal monitoring module and the external monitoring module and control the photovoltaic power generation module to keep the optimal power to output the electric quantity.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (3)
1. A photovoltaic system based on an optimization algorithm is characterized by comprising a photovoltaic power generation module, an energy storage module, an internal monitoring module, an external monitoring module and an MPPT control processing module;
the photovoltaic power generation module is connected with the energy storage module, and the energy storage module is used for storing the electric quantity output by the photovoltaic power generation module;
the internal monitoring module is used for detecting the current and the voltage when the photovoltaic power generation module operates;
the external monitoring module is used for detecting the illumination condition of the area where the photovoltaic power generation module is located and the working temperature of the photovoltaic power generation module; the internal monitoring module and the external monitoring module are respectively connected with the MPPT control processing module;
the MPPT control processing module is used for processing the data acquired by the internal monitoring module and the external monitoring module and controlling the photovoltaic power generation module to keep the optimal power for outputting the electric quantity;
the internal monitoring module comprises a current monitoring unit and a voltage monitoring unit, the current monitoring unit is used for monitoring the current value of the photovoltaic power generation module, and the voltage monitoring unit is used for monitoring the working voltage of the photovoltaic power generation module;
the external monitoring module comprises an illumination monitoring unit and a temperature monitoring unit, the illumination monitoring unit is used for detecting the illumination of the area where the photovoltaic power generation module is located, and the temperature monitoring unit is used for detecting the working temperature of the photovoltaic power generation module;
the MPPT control processing module is configured with a first processing unit configured with a first processing policy, the first processing policy including: acquiring the illumination quantity of the area where the photovoltaic power generation module is located for a first time through an illumination monitoring unit at every interval of a first time period, and sequentially marking the acquired illumination quantity of the area where the photovoltaic power generation module is located as Gz 1-Gzm, wherein Gz1 represents the illumination quantity of the area where the photovoltaic power generation module is located acquired for the first time within the first time, Gzm represents the illumination quantity of the area where the photovoltaic power generation module is located acquired for the mth time within the first time, and m represents the number of the first time;
the working temperature of the photovoltaic power generation module of a first time is obtained through the temperature monitoring unit at every interval of a first time period, and the obtained working temperature of the photovoltaic power generation module is marked as Tg 1-Tgm in sequence, wherein Tg1 represents the working temperature of the photovoltaic power generation module obtained for the first time within the first time, and Tgm represents the working temperature of the photovoltaic power generation module obtained for the mth time within the first time;
substituting the obtained illumination quantity of the area where the photovoltaic power generation module is located for the first times and the working temperature of the photovoltaic power generation module into a detection reference value formula to obtain a detection reference value;
when the detection reference value is greater than or equal to the first detection threshold value, controlling the internal monitoring module to operate;
the detection reference value formula is configured to:
wherein Cj is a detection reference value, a1 is a conversion coefficient of the light quantity of the area where the photovoltaic power generation module is located, and a2 is a conversion coefficient of the working temperature of the photovoltaic power generation module.
2. The optimization algorithm-based photovoltaic system of claim 1, wherein the MPPT control processing module is configured with a second processing unit configured with a second processing strategy, the second processing strategy comprising: acquiring current values of the photovoltaic power generation modules for a second time through the current monitoring unit every second time period, and sequentially marking the acquired current values of the photovoltaic power generation modules as Ig1 values Ign, wherein Ig1 represents the current value of the photovoltaic power generation module acquired for the first time within the second time, Ign represents the current value of the photovoltaic power generation module acquired for the nth time within the second time, and n represents the number of the second time;
acquiring the working voltage of the photovoltaic power generation module for the second time at every second interval time period through a voltage monitoring unit, and sequentially marking the acquired working voltage of the photovoltaic power generation module as Ug 1-Ugn, wherein Ug1 represents the working voltage of the photovoltaic power generation module acquired for the first time within the second time, and Ugn represents the working voltage of the photovoltaic power generation module acquired for the nth time within the second time;
substituting the obtained current value of the photovoltaic power generation module of the second times and the working voltage of the photovoltaic power generation module into a fluctuation reference value formula to obtain a power fluctuation value;
when the power fluctuation value is larger than or equal to the first fluctuation threshold value, increasing the working voltage of the photovoltaic power generation module of the first voltage amount once every third time period;
when the power fluctuation value is greater than or equal to the second fluctuation threshold value and smaller than the first fluctuation threshold value, increasing the working voltage of the photovoltaic power generation module of the second voltage amount once every third time period;
when the power fluctuation value is smaller than a second fluctuation threshold value, maintaining the working voltage of the current photovoltaic power generation module;
the fluctuation reference value formula is configured to:
(ii) a Wherein Wgb is the power fluctuation value.
3. The optimization algorithm-based photovoltaic system of claim 2, wherein the MPPT control processing module is configured with a third processing unit configured with a third processing strategy, the third processing strategy comprising: when the working voltage of the photovoltaic power generation module of the first voltage quantity or the second voltage quantity is increased once every third time period, the output power of the photovoltaic power generation module is continuously detected, k times of continuous output power are obtained every first detection times, and the obtained k times of output power are substituted into a power detection formula to obtain a power reference value;
when the obtained power reference value is smaller than or equal to a first power reference threshold value, stopping increasing the working voltage of the photovoltaic power generation module;
the power detection formula is configured to:
wherein Wgc is a power reference value, and Ws 1-Wsk are obtained k times of continuous output power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111661975.5A CN114243790B (en) | 2021-12-31 | 2021-12-31 | Photovoltaic system based on optimization algorithm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111661975.5A CN114243790B (en) | 2021-12-31 | 2021-12-31 | Photovoltaic system based on optimization algorithm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114243790A CN114243790A (en) | 2022-03-25 |
| CN114243790B true CN114243790B (en) | 2022-06-17 |
Family
ID=80745012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111661975.5A Active CN114243790B (en) | 2021-12-31 | 2021-12-31 | Photovoltaic system based on optimization algorithm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114243790B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635540A (en) * | 2009-08-18 | 2010-01-27 | 河海大学 | Device and method for tracking photovoltaic maximum power point |
| CN102879089A (en) * | 2012-10-15 | 2013-01-16 | 广州中晶新能源工程有限公司 | Solar irradiation intensity and photovoltaic power generation capacity acquiring equipment |
| KR20140022169A (en) * | 2012-08-13 | 2014-02-24 | 현대중공업 주식회사 | Apparatus and method for tracking parameter of solar battery |
| CN107134807A (en) * | 2017-06-29 | 2017-09-05 | 中国南方电网有限责任公司电网技术研究中心 | Control method and device, the computer equipment and storage medium of photovoltaic generating system |
| CN112737503A (en) * | 2020-12-31 | 2021-04-30 | 浙江锐博科技工程有限公司 | Photovoltaic power station monitoring system and method and storage medium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691196A (en) * | 2021-08-30 | 2021-11-23 | 南京邮电大学盐城大数据研究中心 | Solar photovoltaic power generation system with high conversion efficiency |
-
2021
- 2021-12-31 CN CN202111661975.5A patent/CN114243790B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635540A (en) * | 2009-08-18 | 2010-01-27 | 河海大学 | Device and method for tracking photovoltaic maximum power point |
| KR20140022169A (en) * | 2012-08-13 | 2014-02-24 | 현대중공업 주식회사 | Apparatus and method for tracking parameter of solar battery |
| CN102879089A (en) * | 2012-10-15 | 2013-01-16 | 广州中晶新能源工程有限公司 | Solar irradiation intensity and photovoltaic power generation capacity acquiring equipment |
| CN107134807A (en) * | 2017-06-29 | 2017-09-05 | 中国南方电网有限责任公司电网技术研究中心 | Control method and device, the computer equipment and storage medium of photovoltaic generating system |
| CN112737503A (en) * | 2020-12-31 | 2021-04-30 | 浙江锐博科技工程有限公司 | Photovoltaic power station monitoring system and method and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114243790A (en) | 2022-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2360487B1 (en) | Model-based power estimation of photovoltaic power generation system | |
| US10848099B2 (en) | Power generation abnormality detection method and system thereof for photovoltaic panels | |
| KR20110137272A (en) | Evaluation method of aging of a photovoltaic module | |
| CN105356514A (en) | Monitoring method for wind-light integrated power generation system capable of automatically realizing voltage balance | |
| CN103226373A (en) | Method and arrangement in connection with photovoltaic power generator composed of series-connected photovoltaic modules | |
| Wei et al. | Design and validation of a battery management system for solar-assisted electric vehicles | |
| JP2008043148A (en) | Power supply system, control method of power supply system and program | |
| Kohno et al. | Fault-diagnosis architecture for large-scale photovoltaic power plants that does not require additional sensors | |
| CN104682436A (en) | Energy storage system micro-grid capable of inhibiting power fluctuation | |
| CN114243790B (en) | Photovoltaic system based on optimization algorithm | |
| KR20190057716A (en) | Photovoltaic connected electric energy storage system, charging and discharging control method the same | |
| Ettah et al. | Performance analysis of monocrystalline and polycrystalline solar panels in a Semi-Arid region | |
| CN114172256B (en) | Solar energy power generation intelligent control device | |
| CN107834604B (en) | Active power output control system and method for photovoltaic power station | |
| CN107271916B (en) | Battery plate group string health state detection method | |
| JP2008043147A (en) | Power supply system, control method of power supply system and program | |
| Lin et al. | An Investigation on cost-effectiveness of photovoltaic power ramp rate control by using the levelized cost of electricity | |
| CN105743418A (en) | Photovoltaic power generation system | |
| Pisminetsky et al. | Degradation and regeneration in silicon concentrator solar panels | |
| CN116231751B (en) | Photovoltaic power generation output power control strategy | |
| CN105322564A (en) | Wind-solar integrated power generation system capable of automatically achieving voltage balance | |
| KR101467741B1 (en) | Method for extending life of storage battery for photovoltaic power gerneration system and apparatus for performing the method | |
| CN117578990B (en) | Power plant equipment technical parameter collection analysis system | |
| Zakri et al. | Design and Modelling and to Improve Battery Charging Efficiency using Photovoltaics | |
| AU2019351610B2 (en) | PV-device having reduced aging |
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 |