Energy storage technology in many fields, including power system has a wide range of USES, within the scope of the power industry restructuring in the world in recent years for a variety of energy storage technology brings new opportunities for development, using these technologies can better realize energy management of electric power system, especially in the field of renewable energy and distributed generation, this effect is particularly obvious, in the traditional power generation and transmission and distribution networks, the new technology also can be used Following a brief introduction to the basic principles of various energy storage technology and its development status.