Electric power is a very strong part of electrical engineering, which mainly studies the supply, transmission (power line transmission) and transformation (high and low voltage transformation, transformer, circuit breaker and contactor) of electric energy.
Electric power is divided into high-voltage power and variable-voltage power distribution: electronics, electrical appliances and electric power belong to electrical engineering, which is an abstract concept, not referring to a certain equipment or device, but to the whole system and the categories of electronics, electrical appliances and electric power.
Second, the scope of application is different:
Power category: power plant-power grid-transformer-380 V; Electrical: transformer 380V- consumer electrical equipment; Both of them belong to electrical technology, but now they all adopt modern control technology, and electronic technology is widely used in electric power and electrical fields.
power transmission
The transmission of electric energy, together with transformation, distribution and power consumption, constitutes the overall function of the power system. Through power transmission, power plants that are far apart (up to several meters in Qian Qian) are connected with the load center, which makes the development and utilization of electric energy exceed the geographical restrictions.
Compared with other energy sources (such as coal transportation and oil transportation), electric power transmission has the advantages of low loss, high efficiency, flexibility, convenience, easy adjustment and less environmental pollution. Power transmission can also connect power plants in different locations to implement peak-valley regulation. Electric energy transmission is an important embodiment of the superiority of electric energy utilization and an important energy artery in modern society.
Baidu encyclopedia-electric power