After the 20th century, the production of electrical energy mainly relied on thermal power plants, hydropower stations and nuclear power stations. Where conditions permit, they still usetidal、geothermalAndwind energyto generate electricity. The transmission and distribution of electrical energy are mainly realized through high and low voltage AC power networks. As the development direction of power transmission engineering technology, the focus is on studying ultra-high voltage (more than 1 million volts) AC transmission and DC transmission technologies to form a larger power network; at the same time, it is also necessary to study technical issues of superconductor power transmission. The large-scale power systems that emerged in the 20th century integrated power generation, transmission, transformation, distribution, and electricity consumption into an organic whole and became society.material production sectorThe physical engineering system with the widest spatial span, strict time coordination, and extremely complex hierarchical division of labor.
As a form of energy, electrical energy has many advantages such as easy conversion, convenient transportation, easy control, easy use, cleanliness and economy. Since the 1880s, electricity has gradually replaced the steam engine, which was the technical foundation of the industrial revolution of the 18th century, and has become the technical foundation of human material civilization and spiritual civilization in modern society. The transmission and distribution of electrical energy are mainly realized through high and low voltage AC power networks. For nearly 30 years,HVDC transmissionTechnology is advancing rapidly and is becoming more and more widely used in some transmission fields. Therefore, as the development direction of power transmission engineering technology, the focus is on studying ultra-high voltage (more than 1 million volts) AC transmission and DC transmission technologies to form a larger power network; at the same time, it is also necessary to study the technical issues of superconductor power transmission.
Microgrid and energy storage
