CN114400706A - Control method and system of photovoltaic power generation system - Google Patents
Control method and system of photovoltaic power generation system Download PDFInfo
- Publication number
- CN114400706A CN114400706A CN202210097963.2A CN202210097963A CN114400706A CN 114400706 A CN114400706 A CN 114400706A CN 202210097963 A CN202210097963 A CN 202210097963A CN 114400706 A CN114400706 A CN 114400706A
- Authority
- CN
- China
- Prior art keywords
- power generation
- photovoltaic power
- module
- processing module
- generation assembly
- 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.)
- Withdrawn
Links
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
- H02J3/381—Dispersed generators
-
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
-
- 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
-
- 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
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
Abstract
The invention relates to the technical field of photovoltaic power generation, in particular to a control method and a control system of a photovoltaic power generation system, which comprise an environment monitoring module, a processing module, a storage battery module and a grid-connected module, wherein the environment monitoring module is used for monitoring environment data and transmitting the environment data to the processing module; the processing module transmits a switching instruction to the photovoltaic power generation assembly according to the environmental data; the photovoltaic power generation assembly changes the working state of the photovoltaic power generation assembly according to the switching instruction; through the interaction between the environment monitoring module and the processing module, the power supply state of the photovoltaic module is switched, lossless connection is achieved, solar energy resources are fully utilized, the maximization of the solar energy utilization rate is achieved, the user requirements are met, and meanwhile the efficiency of the photovoltaic power generation system is improved.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a control method and a control system of a photovoltaic power generation system.
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 are electronic components. The solar cells are packaged and protected after being connected in series 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 photovoltaic power generation system is mainly divided into two types, one type is a grid-connected power generation system, one part of energy generated by solar energy is used for user requirements, and the other part of energy is stored by a storage battery or is sent to a power grid; the other type is an off-grid power generation system, which is disconnected from the grid and stores redundant electric energy in a storage battery as a backup.
However, the photovoltaic power generation system is affected by the change of the external environment to a great extent, and when the weather changes abnormally, the power generation amount is unstable, so that the balance between the photovoltaic power generation and the power consumption of the user cannot be well met.
Disclosure of Invention
The invention aims to provide a control method and a control system of a photovoltaic power generation system, and aims to solve the technical problems that in the prior art, the photovoltaic power generation system is influenced by external environment changes to a great extent, and when rainy days or weather changes abnormally, the power generation amount is unstable, and the balance between the photovoltaic power generation and the power consumption of a user can not be well met.
In order to achieve the purpose, the invention provides a control system of a photovoltaic power generation system, which comprises an environment monitoring module, a processing module, a storage battery module and a grid-connected module, wherein the processing module is electrically connected with a photovoltaic power generation assembly;
the environment monitoring module is used for monitoring environment data and transmitting the environment data to the processing module;
the processing module transmits a switching instruction to the photovoltaic power generation assembly according to the environment data to switch the power supply state of the photovoltaic power generation assembly;
the storage battery module is used for storing electric energy generated by the photovoltaic power generation assembly;
and the grid-connected module inputs the electric energy generated by the photovoltaic power generation assembly into a power grid.
Wherein, the environmental monitoring module includes illumination sensor, humidity transducer, temperature sensor and dust sensor, illumination sensor humidity transducer temperature sensor with dust sensor all with processing module electric connection.
The control system of the photovoltaic power generation system further comprises an electric quantity monitoring module, the electric quantity monitoring module is electrically connected with the storage battery module, and the electric quantity monitoring module is used for detecting the electricity utilization data of the storage battery module and transmitting the electricity utilization data to the processing module.
The processing module comprises a calculating unit and a judging unit, the calculating unit is electrically connected with the electric quantity monitoring module, and the judging unit is electrically connected with the calculating unit;
the calculation unit predicts an electric quantity output value through the environmental data of the current day and calculates an average consumption value of each day through the electric consumption data;
and the judging unit compares the electric quantity output value with the average consumption value and transmits a switching instruction to the photovoltaic power generation assembly according to a comparison result.
The invention also provides a control method of the photovoltaic power generation system, which adopts the control system of the photovoltaic power generation system and comprises the following steps:
monitoring environmental data through the environmental monitoring module and transmitting the environmental data to the processing module;
the processing module transmits a switching instruction to the photovoltaic power generation assembly according to the environment data;
and the photovoltaic power generation assembly changes the working state of the photovoltaic power generation assembly according to the switching instruction.
Wherein, in the step that the processing module transmits a switching instruction to the photovoltaic power generation assembly according to the environmental data:
when the electric quantity output value is smaller than the average consumption value, the connection between the photovoltaic power generation assembly and the grid-connected module is cut off; and when the electric quantity output value is larger than the average consumption value, the connection between the storage battery module and the grid-connected module is opened.
According to the control method and system of the photovoltaic power generation system, the environment monitoring module is used for monitoring the environment data and transmitting the environment data to the processing module; the processing module transmits a switching instruction to the photovoltaic power generation assembly according to the environment data; the photovoltaic power generation assembly changes the working state of the photovoltaic power generation assembly according to the switching instruction; through the environmental monitoring module with the power supply state of photovoltaic module is switched in the interact between the processing module, realizes lossless linking to make full use of solar energy resource realizes the maximize of solar energy utilization ratio, improves photovoltaic power generation system's efficiency when satisfying the user demand.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic block diagram of a control system of a photovoltaic power generation system according to the present invention.
Fig. 2 is a flowchart illustrating steps of a control method of a photovoltaic power generation system according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1, the present invention provides a control system of a photovoltaic power generation system, including an environment monitoring module, a processing module, a storage battery module and a grid-connected module, wherein the processing module is electrically connected to a photovoltaic power generation assembly, the environment monitoring module is electrically connected to the processing module, and both the storage battery module and the grid-connected module are electrically connected to the photovoltaic power generation assembly; the environment monitoring module is used for monitoring environment data and transmitting the environment data to the processing module; the processing module transmits a switching instruction to the photovoltaic power generation assembly according to the environment data to switch the power supply state of the photovoltaic power generation assembly; the storage battery module is used for storing electric energy generated by the photovoltaic power generation assembly; and the grid-connected module inputs the electric energy generated by the photovoltaic power generation assembly into a power grid.
In this embodiment, the environment monitoring module monitors environment data and transmits the environment data to the processing module; the processing module transmits a switching instruction to the photovoltaic power generation assembly according to the environment data; the photovoltaic power generation assembly changes the working state of the photovoltaic power generation assembly according to the switching instruction; through the environmental monitoring module with the power supply state of photovoltaic module is switched in the interact between the processing module, realizes lossless linking to make full use of solar energy resource realizes the maximize of solar energy utilization ratio, improves photovoltaic power generation system's efficiency when satisfying the user demand.
Furthermore, the environment monitoring module comprises an illumination sensor, a humidity sensor, a temperature sensor and a dust sensor, and the illumination sensor, the humidity sensor, the temperature sensor and the dust sensor are all electrically connected with the processing module; the control system of the photovoltaic power generation system further comprises an electric quantity monitoring module, the electric quantity monitoring module is electrically connected with the storage battery module, and the electric quantity monitoring module is used for detecting the electricity utilization data of the storage battery module and transmitting the electricity utilization data to the processing module; the processing module comprises a calculating unit and a judging unit, the calculating unit is electrically connected with the electric quantity monitoring module, and the judging unit is electrically connected with the calculating unit; the calculation unit predicts an electric quantity output value through the environmental data of the current day and calculates an average consumption value of each day through the electric consumption data; and the judging unit compares the electric quantity output value with the average consumption value and transmits a switching instruction to the photovoltaic power generation assembly according to a comparison result.
In this embodiment, the illumination sensor is configured to detect real-time intensity of illumination, the humidity sensor is configured to detect humidity in air, the higher the humidity in air is, the lower the efficiency of the photovoltaic power generation assembly is, the temperature sensor is configured to detect temperature around the photovoltaic power generation assembly, when the temperature is too high, the power generation efficiency is reduced, and rapid aging of the photovoltaic power generation assembly is caused, a first threshold value and a second threshold value are set, when the actual temperature exceeds the first threshold value, the photovoltaic power generation assembly is cooled, when the actual temperature exceeds the second threshold value, the photovoltaic power generation assembly stops working and gives an alarm, the dust sensor is configured to detect PM2.5 concentration in air, and when the concentration is higher, the power generation efficiency is lower; according to the data, the processing unit predicts an electric quantity output value; when the electric quantity output value is smaller than the average consumption value, the connection between the photovoltaic power generation assembly and the grid-connected module is cut off; and when the electric quantity output value is larger than the average consumption value, the connection between the storage battery module and the grid-connected module is opened.
Furthermore, the control system of the photovoltaic power generation system further comprises a cooling assembly, and the cooling assembly is arranged inside the photovoltaic power generation assembly.
In this embodiment, through setting up cooling module, exceed first threshold when actual temperature, cool down photovoltaic power generation subassembly, improve the generating efficiency, reduce photovoltaic power generation subassembly's ageing speed.
Further, the cooling assembly comprises a water pump, a heat exchange tube and a water storage tank, the water pump is communicated with the heat exchange tube, the heat exchange tube is communicated with the water pump and the water storage tank respectively, and the heat exchange tube is arranged inside the photovoltaic power supply assembly.
In this embodiment, when actual temperature exceeded first threshold value, the water pump starts, inhales water among the heat exchange tube, carries out the heat transfer with photovoltaic power generation component, arranges at last to in the cistern, the user accessible the cistern uses the warm water, has improved the solar energy utilization rate.
Furthermore, the control system of the photovoltaic power generation system further comprises a communication module, and the communication module is connected with the meteorological station through a network and used for receiving weather data.
In the embodiment, the environmental data are accurate through the weather data of the weather station, and the calculation accuracy of the electric quantity generation value is improved.
Referring to fig. 2, the present invention further provides a control method of a photovoltaic power generation system, where the control method of the photovoltaic power generation system includes the following steps:
s1: monitoring environmental data through the environmental monitoring module and transmitting the environmental data to the processing module;
s2: the processing module transmits a switching instruction to the photovoltaic power generation assembly according to the environment data;
s3: and the photovoltaic power generation assembly changes the working state of the photovoltaic power generation assembly according to the switching instruction.
In this embodiment, when the electricity output value is smaller than the average consumption value, the connection between the photovoltaic power generation assembly and the grid-connected module is cut off; when the electric quantity output value is larger than the average consumption value, the connection between the storage battery module and the grid-connected module is opened; through the environmental monitoring module with the power supply state of photovoltaic module is switched in the interact between the processing module, realizes lossless linking to make full use of solar energy resource realizes the maximize of solar energy utilization ratio, improves photovoltaic power generation system's efficiency when satisfying the user demand.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A control system of a photovoltaic power generation system is characterized in that,
the photovoltaic grid-connected power generation system comprises an environment monitoring module, a processing module, a storage battery module and a grid-connected module, wherein the processing module is electrically connected with a photovoltaic power generation assembly, the environment monitoring module is electrically connected with the processing module, and both the storage battery module and the grid-connected module are electrically connected with the photovoltaic power generation assembly;
the environment monitoring module is used for monitoring environment data and transmitting the environment data to the processing module;
the processing module transmits a switching instruction to the photovoltaic power generation assembly according to the environment data to switch the power supply state of the photovoltaic power generation assembly;
the storage battery module is used for storing electric energy generated by the photovoltaic power generation assembly;
and the grid-connected module inputs the electric energy generated by the photovoltaic power generation assembly into a power grid.
2. The control system of a photovoltaic power generation system according to claim 1,
the environment monitoring module includes illumination sensor, humidity transducer, temperature sensor and dust sensor, illumination sensor humidity transducer temperature sensor with dust sensor all with processing module electric connection.
3. The control system of a photovoltaic power generation system according to claim 2,
the control system of the photovoltaic power generation system further comprises an electric quantity monitoring module, the electric quantity monitoring module is electrically connected with the storage battery module, and the electric quantity monitoring module is used for detecting the power consumption data of the storage battery module and transmitting the power consumption data to the processing module.
4. A control system for a photovoltaic power generation system according to claim 3,
the processing module comprises a calculating unit and a judging unit, the calculating unit is electrically connected with the electric quantity monitoring module, and the judging unit is electrically connected with the calculating unit;
the calculation unit predicts an electric quantity output value through the environmental data of the current day and calculates an average consumption value of each day through the electric consumption data;
and the judging unit compares the electric quantity output value with the average consumption value and transmits a switching instruction to the photovoltaic power generation assembly according to a comparison result.
5. A control method of a photovoltaic power generation system employing the control system of the photovoltaic power generation system according to claim 4, characterized by comprising the steps of:
monitoring environmental data through the environmental monitoring module and transmitting the environmental data to the processing module;
the processing module transmits a switching instruction to the photovoltaic power generation assembly according to the environment data;
and the photovoltaic power generation assembly changes the power supply state of the photovoltaic power generation assembly according to the switching instruction.
6. The method for controlling a photovoltaic power generation system according to claim 5, wherein the method for controlling a photovoltaic power generation system according to claim 4 is further characterized in that, in the step of transmitting the switching command to the photovoltaic power generation module according to the environmental data by the processing module:
when the electric quantity output value is smaller than the average consumption value, the connection between the photovoltaic power generation assembly and the grid-connected module is cut off; and when the electric quantity output value is larger than the average consumption value, the connection between the storage battery module and the grid-connected module is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210097963.2A CN114400706A (en) | 2022-01-27 | 2022-01-27 | Control method and system of photovoltaic power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210097963.2A CN114400706A (en) | 2022-01-27 | 2022-01-27 | Control method and system of photovoltaic power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114400706A true CN114400706A (en) | 2022-04-26 |
Family
ID=81233856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210097963.2A Withdrawn CN114400706A (en) | 2022-01-27 | 2022-01-27 | Control method and system of photovoltaic power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114400706A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593529A (en) * | 2022-05-07 | 2022-06-07 | 西安热工研究院有限公司 | Light-splitting absorption heat collection assembly, photovoltaic cogeneration system and electric energy storage system |
-
2022
- 2022-01-27 CN CN202210097963.2A patent/CN114400706A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593529A (en) * | 2022-05-07 | 2022-06-07 | 西安热工研究院有限公司 | Light-splitting absorption heat collection assembly, photovoltaic cogeneration system and electric energy storage system |
| WO2023216617A1 (en) * | 2022-05-07 | 2023-11-16 | 西安热工研究院有限公司 | Light splitting, absorbing and heat collecting assembly, photovoltaic combined heat and power supply system, and electric energy storage system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104836319A (en) | Integrated fuel cell power supply system | |
| CN111245096B (en) | Distributed photovoltaic data acquisition terminal, system and data processing method | |
| CN103547043A (en) | Power supply system and power supply control method of LED centralized direct-current micro-grid | |
| CN115149647A (en) | Intelligent energy storage system based on light energy power generation | |
| CN114400706A (en) | Control method and system of photovoltaic power generation system | |
| CN203014421U (en) | Solar green operating room power supply system | |
| CN204992738U (en) | Integration fuel cell power supply system | |
| CN206806347U (en) | A kind of solar photovoltaic assembly device monitored in real time | |
| CN205070454U (en) | Waste incineration power plant's photovoltaic power generation system | |
| CN204244173U (en) | A kind of integrated control unit being applied to distributed photovoltaic power generation system | |
| CN114928332A (en) | High-efficient solar photovoltaic battery system | |
| CN211552071U (en) | Photovoltaic and photothermal integrated system | |
| CN114337537A (en) | HJT photovoltaic cell monitoring system | |
| CN109861288B (en) | Photovoltaic hybrid energy storage power system based on CPS | |
| KR100962338B1 (en) | Power value control module and solar-board apparatus and power value control method of solar-board | |
| CN116232219B (en) | Remote monitoring system and method for photovoltaic power station | |
| CN201430449Y (en) | Grid-connected solar photovoltaic power station | |
| CN110601262A (en) | Intelligent efficient power distribution gain device of photovoltaic power station and control method thereof | |
| Durrani et al. | Prototype Designing of Hybrid Power System for Industry with efficient design of Solar Power System | |
| CN203504271U (en) | Feeder automation operation power supply | |
| KR102617184B1 (en) | Smart energy storage device with hybrid green energy operation and predictive model | |
| CN204668981U (en) | Alternating current-direct current variable-frequency variable-voltage photovoltaic intelligent electricity generation system | |
| CN218941047U (en) | Novel photovoltaic module | |
| KR102535237B1 (en) | Smart energy storage device with hybrid green energy operation | |
| CN213341626U (en) | Intelligent management system of photovoltaic power plant |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220426 |