Energy storage plant
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1, the principle and characteristics of energy storage technology
The energy storage device composed of energy storage components and the grid access device composed of power electronic devices become the two major parts of the energy storage system. The energy storage device mainly realizes the energy storage, release or fast power exchange. The grid access device realizes the two-way energy transfer and conversion between the energy storage device and the power grid, and realizes the functions of power peaking, energy optimization, improvement of power supply reliability and power system stability.
The capacity range of the energy storage system is relatively wide, from tens of kilowatts to hundreds of megawatts; discharge time span, from milliseconds to hourly level; wide range of applications throughout the power generation, transmission, distribution, power system; large-scale power energy storage technology research and application has just begun, it is a completely new subject, but also a hot area of research at home and abroad.
2、Commonly used energy storage methods
At present, energy storage technology is mainly physical energy storage (such as pumped storage, compressed air energy storage, flywheel energy storage, etc.), chemical energy storage (such as various types of batteries, renewable fuel cells, liquid current batteries, supercapacitors, etc.) and electromagnetic energy storage (e.g., superconducting electromagnetic energy storage, etc.) and so on.
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