About the editor, I have introduced to you the system structure, working principle and advantages of wind and solar storage and off-grid. I wonder if you have a certain understanding of wind and solar storage and off-grid. Next, the editor will continue to explain to you the working mode and application of wind and solar storage and off-grid storage.
Operating mode
The two-way energy management optimization working mode of wind and solar complementary off-grid power generation system: four working modes: grid-connected inverter, off-grid inverter, mains charging, and diesel engine charging.
- Grid-connected inverter mode: When the system is connected to the grid, the system can select the grid-connected inverter mode. At this time, the wind turbine and solar panel charge the DC bus where the energy storage module is located. The DC bus where the energy storage module is located sends energy to the grid and load ends through the inverter. If the voltage of the energy storage module is lower than the grid-connected constant voltage point, it stops transmitting energy to the grid and the load, and only charges the energy storage module.
- Off-grid inverter mode: When the system is connected to the grid and the grid is disconnected, and the system detects abnormal grid input, the system automatically switches to the off-grid inverter mode. At this time, the wind turbine and solar panel charge the DC bus where the energy storage module is located. When the voltage of the energy storage module exceeds the unloading voltage, the wind turbine begins to unload. When the voltage of the energy storage module reaches the photovoltaic float charging voltage point, the photovoltaic float charging begins. At the same time, the DC bus where the energy storage module is located supplies power to the load through the inverter.
- Mains charging mode: When the system is connected to the power grid and the voltage of the energy storage module drops to the starting charging voltage of the mains, the system automatically enters the mains charging mode, and the wind turbine, solar panel and mains bypass simultaneously supply power to the battery. Charging, and the mains bypass supplies load operation.
- Diesel engine charging mode: The system can set the “diesel engine charging” mode to charge the energy storage module.
Internet of things applications
Since wind and solar storage and off-grid power generation system projects are generally relatively large, both daily inspections and troubleshooting are a huge waste of manpower and material resources. In response to this situation, our company has specially designed a remote monitoring and control Internet of Things platform suitable for wind and solar storage and off-grid power generation systems. The platform can feedback a series of variable data such as voltage and current of the system in real time and record and save it. The platform can compare the read data with the alarm data limit, react to data exceeding the alarm limit and immediately alarm, allowing maintenance personnel to make preliminary judgments on system faults remotely and solve the fault faster. The platform can also remotely operate the front-end equipment of the system through industrial protocols, such as power on and off, mode switching, etc., which truly saves manpower and material resources.
system applications
In terms of electricity consumption, when the solar energy and wind energy are strong enough during the day or on a sunny day, and the electricity generated by the solar energy and wind energy is enough for the load end, the electricity generated by the solar energy and wind energy is directly inverted through the off-grid inverter. It is supplied to the load end for use; when the solar energy and wind energy are not strong enough to be used by the load end at night, rainy days, etc., the electric energy is extracted from the energy storage module and supplied to the load end together with the electric energy generated by solar and wind energy; when solar and wind energy If it is not strong enough to be used by the load end, and the energy storage module has insufficient power, the electric energy will be directly supplied from the mains end to the load end for use. Such system power supply logic reduces the system’s consumption of city power to the greatest extent and develops the value of the system.
Small wind and solar energy storage smart power generation systems are also widely used in hydrology and water conservancy, forest fire prevention, border warning, highways, etc. For example, in hydrology and water conservancy, our company’s small wind and solar energy storage monitoring system is also very good, because reservoirs, rivers and other areas need Supply daily drinking water to residents; therefore, monitoring systems need to be established in these construction areas to ensure that there are no man-made water quality problems in daily drinking water in these areas. On the other hand, because most reservoirs are built around residential areas, and surrounding residents often pass by the reservoir, it is also necessary to establish a monitoring system for real-time monitoring to ensure the safety of others. Next, let’s take a look at some real-life case diagrams of our company’s small wind and solar energy storage smart monitoring system.
Job Wang（Mr）
Shenzhen Lolsolar New Energy Technology Co.,Ltd
Cell Phone/Skype/WhatsAPP/WeChat:+86 13279529807
Email: job.wang@lolsolar.com
Website: http://www.lolsolar.net/
Leading Manufacturer of Lithium Battery / Solar Inverter / Solar House System
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