CN105529810A - Photovoltaic charging system of energy-storage photovoltaic power station and control method thereof - Google Patents
Photovoltaic charging system of energy-storage photovoltaic power station and control method thereof Download PDFInfo
- Publication number
- CN105529810A CN105529810A CN201610046534.7A CN201610046534A CN105529810A CN 105529810 A CN105529810 A CN 105529810A CN 201610046534 A CN201610046534 A CN 201610046534A CN 105529810 A CN105529810 A CN 105529810A
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- batteries
- photovoltaic
- photovoltaic module
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- controller
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- 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
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a photovoltaic charging system of an energy-storage photovoltaic power station and a control method thereof. The charging system comprises a photovoltaic module, an illuminance sensor, a photovoltaic power generation controller and a charging controller, wherein the photovoltaic module is used for finishing conversion from solar energy to electronic energy; the illuminance sensor is used for detecting the solar illumination intensity of an environment where the photovoltaic module is positioned, and sending detected data to the photovoltaic power generation controller; the photovoltaic power generation controller is used for receiving the solar illumination intensity detected by the illuminance sensor, judging the output parameter of the photovoltaic module according to a volt-ampere characteristic curve of the photovoltaic module, and regulating the output parameter of the charging controller; and the charging controller is connected with a storage battery A, a storage battery B and a storage battery C through a selector switch and is used for controlling the photovoltaic module to charge the storage battery A, the storage battery B and the storage battery C. The photovoltaic charging system can control the charging circuit in different grades according to different illumination conditions to fully utilize light energy, and avoids light energy waste so as to improve the power generation efficiency of the photovoltaic power station.
Description
Technical field
The present invention relates to field of photovoltaic power generation, be specifically related to a kind of energy storage type photovoltaic plant photovoltaic charging system and control method thereof.
Background technology
When waiting illumination condition more weak with the dusk in the morning, existing photovoltaic generation occasion photovoltaic module output parameter cannot meet the charge parameter of batteries, causes photovoltaic service efficiency to reduce.
Bibliographical information more at present be all the research when illumination condition is sufficient, photovoltaic generating system being carried out to MPPT maximum power point tracking, less for the research improving photovoltaic efficiency under low-light condition, the judgment mode weak to illumination is all detect electrical quantitys such as the voltage and currents that photovoltaic module exports, if when photovoltaic module is more, need the relevant parameter of detection more, control system is comparatively complicated, and process and realization will difficulties.
Summary of the invention
For solving the problem, the invention provides a kind of energy storage type photovoltaic plant photovoltaic charging system and control method thereof, making full use of of luminous energy can be realized according to different illumination condition grading control charging circuits, avoid luminous energy to waste, thus improve the generating efficiency of photovoltaic plant.
For achieving the above object, the technical scheme that the present invention takes is:
Energy storage type photovoltaic plant photovoltaic charging system, comprises
Photovoltaic module is the energy conversion unit of photovoltaic generating system, for completing the conversion of solar energy to electrical;
The data detected for detecting the Intensity of the sunlight of environment residing for photovoltaic module, and are sent to photovoltaic electricity generation controller by illuminance transducer;
Photovoltaic electricity generation controller, for receiving the Intensity of the sunlight detected by illuminance transducer, and the volt-ampere characteristic of foundation photovoltaic module judges the output parameter size of photovoltaic module, the output parameter of adjustment charge controller.
Batteries, is made up of batteries A, batteries B and batteries C, and batteries A is connected with load with inverter B respectively by inverter A with batteries B;
Charge controller, is connected with batteries A, batteries B and batteries C by diverter switch, is batteries A, batteries B and batteries C charging for controlling photovoltaic module.
The control method of above-mentioned energy storage type photovoltaic plant photovoltaic charging system is:
(1) when ambient light illumination is strong, the charge parameter of charge controller is set to the charge parameter of batteries A, simultaneously by conversion diverter switch by the outputting cutting of charge controller to batteries A, complete normal photovoltaic charged thermal energy storage process;
(2) when ambient light illumination is on the weak side, when the charge parameter that photovoltaic module output parameter cannot meet batteries A requires, photovoltaic electricity generation controller reduces charge controller parameter, conversion diverter switch is switched to batteries B simultaneously, exported by photovoltaic module and charge to batteries B, batteries B electrical quantity is configured to 1/2 (rated voltage parameter) of batteries A electrical quantity;
(3) when ambient light illumination reduces further, when the charge parameter that photovoltaic module output parameter cannot meet batteries B requires, photovoltaic electricity generation controller reduces charge controller parameter further, conversion diverter switch is switched to batteries C simultaneously, photovoltaic module is exported batteries C is charged, batteries C voltage optimum configurations is 24 volts, for the electric energy that the photovoltaic module stored under low-light condition exports, for each control device of whole photovoltaic generating system provides power consumption; Batteries A and batteries B is load supplying after the electric energy stored separately being carried out inversion respectively by inverter A and inverter B.
The present invention has following beneficial effect:
By testing environment illumination, intensity of illumination can be judged very easily, can judge by the volt-ampere characteristic of solar panel the electrical quantity size that photovoltaic module exports very easily simultaneously, thus realize special charging control program, the final efficiency improving photovoltaic generation;
Implement different charging control programs respectively under can meeting various illumination condition, the problem of luminous energy waste under effective solution low-light condition, has certain practicality.
Making full use of of luminous energy can be realized according to different illumination condition grading control charging circuits, avoid luminous energy to waste, thus improve the generating efficiency of photovoltaic plant.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of embodiment of the present invention energy storage type photovoltaic plant photovoltaic charging system.
Embodiment
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, embodiments provide energy storage type photovoltaic plant photovoltaic charging system, comprise
Photovoltaic module is the energy conversion unit of photovoltaic generating system, for completing the conversion of solar energy to electrical;
The data detected for detecting the Intensity of the sunlight of environment residing for photovoltaic module, and are sent to photovoltaic electricity generation controller by illuminance transducer;
Photovoltaic electricity generation controller, for receiving the Intensity of the sunlight detected by illuminance transducer, and the volt-ampere characteristic of foundation photovoltaic module judges the output parameter size of photovoltaic module, the output parameter of adjustment charge controller.
Batteries, is made up of batteries A, batteries B and batteries C, and batteries A is connected with load with inverter B respectively by inverter A with batteries B;
Charge controller, is connected with batteries A, batteries B and batteries C by diverter switch, is batteries A, batteries B and batteries C charging for controlling photovoltaic module.
The control method that the embodiment of the present invention additionally provides above-mentioned energy storage type photovoltaic plant photovoltaic charging system is:
(1) when ambient light illumination is strong, the charge parameter of charge controller is set to the charge parameter of batteries A, simultaneously by conversion diverter switch by the outputting cutting of charge controller to batteries A, complete normal photovoltaic charged thermal energy storage process;
(2) when ambient light illumination is on the weak side, when the charge parameter that photovoltaic module output parameter cannot meet batteries A requires, photovoltaic electricity generation controller reduces charge controller parameter, conversion diverter switch is switched to batteries B simultaneously, exported by photovoltaic module and charge to batteries B, batteries B electrical quantity is configured to 1/2 (rated voltage parameter) of batteries A electrical quantity;
(3) when ambient light illumination reduces further, when the charge parameter that photovoltaic module output parameter cannot meet batteries B requires, photovoltaic electricity generation controller reduces charge controller parameter further, conversion diverter switch is switched to batteries C simultaneously, photovoltaic module is exported batteries C is charged, batteries C voltage optimum configurations is 24 volts, for the electric energy that the photovoltaic module stored under low-light condition exports, for each control device of whole photovoltaic generating system provides power consumption; Batteries A and batteries B is load supplying after the electric energy stored separately being carried out inversion respectively by inverter A and inverter B.
This is specifically implemented by the real-time testing environment sunlight intensity of illuminance transducer, and according to voltage, size of current that the volt-ampere characteristic analysis and calculation solar cell of solar cell exports, implement different charging strategy for control charge controller and foundation is provided, according to different ambient lighting conditions, automatically Charge Management is carried out to different batteries, thus the classified utilization of solar energy under realizing different light situation, realize making full use of of luminous energy, avoid luminous energy to waste, thus improve the generating efficiency of photovoltaic plant.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. energy storage type photovoltaic plant photovoltaic charging system, is characterized in that, comprises
Photovoltaic module is the energy conversion unit of photovoltaic generating system, for completing the conversion of solar energy to electrical;
The data detected for detecting the Intensity of the sunlight of environment residing for photovoltaic module, and are sent to photovoltaic electricity generation controller by illuminance transducer;
Photovoltaic electricity generation controller, for receiving the Intensity of the sunlight detected by illuminance transducer, and the volt-ampere characteristic of foundation photovoltaic module judges the output parameter size of photovoltaic module, the output parameter of adjustment charge controller;
Batteries, is made up of batteries A, batteries B and batteries C, and batteries A is connected with load with inverter B respectively by inverter A with batteries B;
Charge controller, is connected with batteries A, batteries B and batteries C by diverter switch, is batteries A, batteries B and batteries C charging for controlling photovoltaic module.
2. the control method of energy storage type photovoltaic plant photovoltaic charging system as claimed in claim 1, is characterized in that,
(1) when ambient light illumination is strong, the charge parameter of charge controller is set to the charge parameter of batteries A, simultaneously by conversion diverter switch by the outputting cutting of charge controller to batteries A, complete normal photovoltaic charged thermal energy storage process;
(2) when ambient light illumination is on the weak side, when the charge parameter that photovoltaic module output parameter cannot meet batteries A requires, photovoltaic electricity generation controller reduces charge controller parameter, conversion diverter switch is switched to batteries B simultaneously, exported by photovoltaic module and charge to batteries B, batteries B electrical quantity is configured to 1/2 of batteries A electrical quantity;
(3) when ambient light illumination reduces further, when the charge parameter that photovoltaic module output parameter cannot meet batteries B requires, photovoltaic electricity generation controller reduces charge controller parameter further, conversion diverter switch is switched to batteries C simultaneously, photovoltaic module is exported batteries C is charged, batteries C voltage optimum configurations is 24 volts, for the electric energy that the photovoltaic module stored under low-light condition exports, for each control device of whole photovoltaic generating system provides power consumption; Batteries A and batteries B is load supplying after the electric energy stored separately being carried out inversion respectively by inverter A and inverter B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610046534.7A CN105529810A (en) | 2016-01-17 | 2016-01-17 | Photovoltaic charging system of energy-storage photovoltaic power station and control method thereof |
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| CN201610046534.7A CN105529810A (en) | 2016-01-17 | 2016-01-17 | Photovoltaic charging system of energy-storage photovoltaic power station and control method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110254289A (en) * | 2019-06-12 | 2019-09-20 | 长沙理工大学 | A kind of solar electrically propelled vehicle charging system based on new used batteries mixed management |
| CN110350643A (en) * | 2019-07-15 | 2019-10-18 | 周建军 | A kind of Novel connecting method promoting photovoltaic efficiency |
| CN110579276A (en) * | 2019-10-09 | 2019-12-17 | 腾色智能科技(南京)有限公司 | Illuminance detection device and method and Internet of things terminal equipment |
| CN112202233A (en) * | 2020-10-27 | 2021-01-08 | 陈方红 | Power unit for solar charging |
| CN117375192A (en) * | 2023-12-07 | 2024-01-09 | 深圳博巨矽科技有限公司 | Power management method and circuit for charging and supplying power by utilizing light energy and photovoltaic keyboard |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110254289A (en) * | 2019-06-12 | 2019-09-20 | 长沙理工大学 | A kind of solar electrically propelled vehicle charging system based on new used batteries mixed management |
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| CN117375192A (en) * | 2023-12-07 | 2024-01-09 | 深圳博巨矽科技有限公司 | Power management method and circuit for charging and supplying power by utilizing light energy and photovoltaic keyboard |
| CN117375192B (en) * | 2023-12-07 | 2024-03-22 | 深圳博巨矽科技有限公司 | Power management method and circuit for charging and supplying power by utilizing light energy and photovoltaic keyboard |
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Application publication date: 20160427 |
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