Electricity:
Electricity is an energy source driven by electric energy. It is found that in the 1970s of 19, the discovery and application of electric power set off the second industrialization climax. It has become one of the three major scientific and technological revolutions in the world since the18th century in human history, and technology has changed people's lives since then. The large-scale power system that appeared in the 20th century is one of the most important achievements in the history of human engineering science. It is a power production and consumption system composed of power generation, transmission, substation, distribution and electricity consumption.