Rectangular seal ring In mechanical equipment and industrial applications, the...
Off-grid and on-grid integrated machine
In the context of dealing with the increasing power instability and the need for environmental protection, Off-grid and on-grid integrated machines have become an ideal solution, which is widely used in areas with unstable power systems and frequent power outages. It can not only realize the automatic switch between grid-connected and off-grid, but also integrate the two modes in a single device, providing users with a flexible and efficient power management method. This paper introduces the working principle, mode characteristics and application scenarios of Off-grid and on-grid integrated machine.
Overview of Off-grid and on-grid integrated machine
Off-grid and on-grid integrated machine is a kind of power equipment that integrates grid-connected and off-grid functions. Compared with traditional independent power generation and energy storage systems, it has higher flexibility and intelligent management capabilities. In the event of a power outage or power system instability, the device can quickly switch to off-grid mode, ensuring that users can continue to receive power supply. The design concept of the system is to maximize the use of renewable energy, while providing a stable power guarantee to adapt to the needs of different users.
Working mode
Off-grid and on-grid integrated machine have a variety of working modes, including load priority, battery priority and grid priority. Each mode has different priority Settings for power management.
(1) Load priority
In load-first mode, the primary goal of power distribution is to meet the load demand. Its working logic is as follows:
Photovoltaic power supply priority: the system first uses photovoltaic power generation to meet the direct electricity demand of the load.
Battery supplementary power generation: When the photovoltaic power generation is not enough to meet the load, the system will start discharging from the battery to supplement the power.
Grid-connected priority power supply: If the photovoltaic power generation fully meets the load demand, the excess electricity will be stored in the battery; In the case of a full battery or no battery, the excess power will be added to the grid.
Priority order: Load > Battery > Grid
(2) Battery is preferred
In battery priority mode, the system gives priority to charging the battery, as follows:
Photovoltaic charging priority: First use photovoltaic power generation to charge the battery.
Mains Recharge mode: When you need to connect to the mains for charging, you need to enable the AC CHG function and set the related charging time and battery SOC (state charge) point.
Priority storage of power: Users can choose to charge the battery through the photovoltaic system rather than directly supplying power to the load.
Priority order: Battery > Load > Grid
(3) Power grid priority
In grid-first mode, the primary goal of the system is to integrate electricity into the grid:
Grid-connected photovoltaic power generation: The electricity generated by photovoltaic will be preferentially sent to the grid.
Set discharge time: Users can set the discharge time of the battery and the SOC point to efficiently send electricity to the grid during peak times.
Load power supply is second: if after the extension of time, the grid is not successfully connected or the power is insufficient, the system will supply power to the load.
Priority order: Load > Grid > Battery
advantages
Automatic switching: Off-grid and on-grid integrated machine can automatically switch modes according to power supply conditions to ensure uninterrupted power supply.
Increase renewable energy utilization: Maximize the use of renewable energy sources such as solar and reduce reliance on traditional electricity through smart management and prioritization.
Flexibility: Users can flexibly choose working modes according to local power demand, photovoltaic power generation and grid stability, greatly meeting individual needs.
Environmentally friendly: Reduce greenhouse gas emissions and promote sustainable development through the use of renewable energy and energy efficiency.
Economy: In the long run, it can reduce electricity costs, and has backup power supply function in the event of power failure, to avoid the loss of enterprises and families due to power failure.
application scenarios
The Off-grid and on-grid integrated machine is ideal for the following application scenarios:
Unstable power areas: such as remote villages, islands and other areas, can provide stable and reliable power supply.
Commercial and industrial use: In factories, warehouses, etc., to ensure that production and operations are not interrupted during power outages or grid failures.
Emergency relief and temporary facilities: Provide timely power support during natural disasters or other emergencies.
Family residence: While meeting the daily electricity needs of the family, actively using renewable energy to achieve low-carbon life.
conclusion
With the continuous progress of renewable energy technology and intelligent power management, Off-grid and on-grid integrated machine have gradually become an important tool to solve power problems. With its flexible mode switching and efficient power management, it can provide reliable power security for users in areas with unstable power and frequent power outages, and play an important role in promoting sustainable development. In the future, with the further development of technology, it is expected that Off-grid and on-grid integrated machines will be applied and promoted in a wider range of fields.
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