Energy storage technologies include

Energy storage technology includes radiation, chemistry, gravitational potential energy, electric potential energy, electricity, high temperature, latent heat and power.

Energy storage technology mainly refers to the storage of electric energy. The stored energy can be used as emergency energy, and it can also be stored when the power grid load is low, and output energy when the power grid load is high, which can be used for peak shaving and valley filling to reduce power grid fluctuation. There are many forms of energy, including radiation, chemistry, gravitational potential energy, electric potential energy, electricity, high temperature, latent heat and power.

Energy storage includes transforming energy that is difficult to store into a more convenient or economical storage form. Energy storage technologies used in large power systems include pumped storage and new energy storage. Compared with the traditional pumped storage, the new type of energy storage has the advantages of flexible site selection, short construction period and quick effect, and has obvious advantages in the field of new energy development and consumption.

A new type of energy storage, like a large-scale charging treasure, is charged when the wind power and photovoltaic power are high or the electricity consumption is low, and discharged when the scenery output is low or the electricity consumption is high. Therefore, the new energy storage can not only smooth the unstable photovoltaic power generation and wind power, but also increase the proportion of renewable energy; It can also cooperate with conventional thermal power, nuclear power and other power sources to regulate peak and frequency for the power system and improve the stability and flexibility of the power system.

At present, the development of new energy storage technology in China is diversified, and the industry has entered the lane of large-scale and rapid development. By the end of 2022, the cumulative installed capacity of new energy storage in China reached 8.7 million kilowatts, an increase of more than 1 10% over the previous year, ranking first in the world.

technology application

1, battery energy storage, lead-acid batteries are generally used in high-power occasions, which are mainly used for emergency power supply, battery cars and residual energy storage in power plants. Rechargeable dry batteries can also be used in low-power occasions, such as nickel-hydrogen batteries and lithium-ion batteries.

2. Inductors store energy. Inductor itself is an energy storage element, and its stored electric energy is directly proportional to the square sum of its inductor and the current flowing: E=L*I*I/2. Because inductors have resistance at room temperature, and resistance consumes energy, many energy storage technologies use superconductors. Inductive energy storage is still immature, but there are also examples of application.

3. Capacitors store energy. Capacitor is also an energy storage element, and its stored electric energy is proportional to the square of its capacitance and terminal voltage: E=C*U*U/2. Capacitive energy storage is easy to maintain and does not need superconductors. Another important point of capacitive energy storage is that it can provide instantaneous high power, which is very suitable for laser, flashlight and other applications.