Unveiling the Energy Storage Solutions

Energy Storage refers to the process of storing electrical energy through media or equipment and releasing it when needed.

According to the storage and conversion form of energy, it can be divided into physical storage and chemical storage.

Physical storage consists of the method of pumped water storage, gravity energy storage, compressed air energy storage and flywheel energy storage, etc.

Chemical energy storage consists of lithium-ion batteries, sodium-ion batteries, flow batteries, lead batteries, etc.

In recent, the installed capacity of distributed PV has grown rapidly due to the energy shortage. However, solar energy are random and volatile, that brings the challenges to power quality and power balance of the grid. Thus, energy storage has become an essential part of virtual power plants, smart micro-grids and new power systems.

What is the advantages of energy storage solutions?

The construction of distributed photovoltaics and energy storage on the load side can build a small micro-grid system.

In the case of power supply abnormalities such as power shortages and power outages, the off-grid state can be turned on to ensure important or basic load demand.

Distributed photovoltaic with energy storage is beneficial to reduce the construction cost of energy storage system and help users save energy cost and other power equipment input costs.

Distributed photovoltaic energy storage can combine power sales, charging, power exchange, load management and other scenarios to realize the integrated development of “source, network, load and storage” on the user side, realize self-coupling of energy in the region, and facilitate the combination of multiple energy strategies.

Maximize the utilization rate of new energy and reduce energy cost capital, cultivate new business models in new scenarios, and promote high-quality development of energy consumption.

Common Energy Storage Solutions

Solar Energy Storage Solutions

Solar energy storage is the self-consumption solution. In solar energy storage, there are the components including ESS inverter, batteries, distribution box and energy meter. The configuration of 6kW Solar system plus 10kWh storage batteries are one of the best choices.

The working mode of Solar ESS, the power generated by solar panels is priority used by the loads. The excess part is charged to the battery for backup. The remaining power is connected to the grid.

When the load exceeds the PV power generation, the insufficient part is given priority to battery discharge and replenishment.

When the power grid fails, the backup terminal outputs continuously and is powered by the battery.

It is estimated that the self-consumption rate is > 80%, saving 5-10kWh of purchased electricity from the grid every day.

Solar Storage and Charging Solutions

The solar storage and charging system includes photovoltaic modules, energy storage inverters, batteries, distribution boxes, meters, AC charging piles and other equipment. Working flow as the following,

When the electric vehicle is not charging, the excess power generated by photovoltaic power generation is given priority to charging the battery for backup, and the remaining power is connected to the grid;

When the electric vehicle is charging, the load exceeds the photovoltaic power generation, the battery discharges to supplement, and then the grid buys electricity to supplement.

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