Electricity is an energy source powered by electrical energy. The power system is an electric energy production and consumption system composed of power generation, transmission, transformation, distribution and consumption. Its function is to convert the primary energy of nature into electrical energy through the power generation power device, and then supply the electric energy to each user through transmission, transformation and distribution. Electric energy is mainly generated by hydroelectric power, thermal power generation, nuclear power generation and other power generation methods such as wind energy, geothermal energy, solar energy, tidal energy, hydrogen energy and other power generation methods. The power industry is related to the national economy and people's livelihood, and the society is also paying more attention to the power industry.