The research, development and application of energy storage technology are mainly based on storage thermal energy and electrical energy. They are widely used in the fields of solar energy use, "peak -migrating valley", recycling of waste heat and waste heat, and energy saving of industrial and civilian buildings and air conditioners. Essence

There are three main electrical storage technologies in the industry, including hydropower energy storage technology, compressed air storage technology, and flywheel energy storage technology.

1. Hydropower energy storage technology

Hydraulic energy storage technology is the oldest, most mature technology, and the largest commercialization technology of equipment capacity. There are about 500 hydraulic energy storage power stations in the world, of which 35 are more than 1000MW. Hydraulic RESIDEIAL ENERGY Storage System generally has two large reservoirs, one is in a lower position, and the other is at a high level of improvement. During the low peak period of electricity, the water was delivered from the lower reservoir to the storage reservoir with a lower position to store it. When electrical energy is needed, the potential energy of the high -level reservoir can promote the power generation.

2. Compressed air energy storage

Compressed air storage is to transport air pressure to underground salt mines, abandoned stone mines, underground water storage layers, etc. at low peaks of electricity. When the electric load is large, the compressed air can burn with the fuel, producing high temperature and high voltage gas, and driving the gas turbine to do power. The equipment capacity of the application has reached hundreds of MW. Such as the installation capacity of 290MW, the German Fenolph Power Station was put into use in 1980.

3. Flying Wheel Energy Storage Power Technology

Flying Wheel Energy Storage Power Electricity Technology is a new type of technology that connects with the power network to realize the conversion of electrical energy. The flywheel energy storage power system is mainly composed of equipment such as motors, flywheels, and electronics converters. The basic principle of flywheel energy storage is to convert the power in the power system into the kinetic energy of the flywheel motion under the rich conditions of power. When the power system is insufficient, the kinetic energy of the flywheel movement is converted into electrical energy for power supply users.