An electrical professional leader said: The electrical major just needs to take care of "supply and distribution".

This post was last edited by jjli618 on 2010-7-1 10:01. Supply and distribution actually form the power system. The power system is a whole composed of generation, supply and consumption. If any one of these links does not cooperate well, the safe and economical operation of the power system cannot be guaranteed. In the power system, there is always a balance between generation, supply and consumption. power distribution: Usually, the network that supplies power to users directly or after step-down from the low-voltage side of the secondary step-down substation in the power system is called a distribution network. It consists of overhead wires or cable distribution lines, power distribution stations or pole-mounted step-down transformers that are directly connected to users. A direct distribution network that supplies power from a power plant directly to users with generator voltage is called a direct distribution network. Distribution networks and transmission networks are, in principle, determined according to voltage levels. The main function of the distribution network is to receive electric energy from the transmission network and distribute it step by step or consume it locally, that is, reduce the high-voltage electric energy to various voltages that are convenient for operation and suitable for user needs, forming a multi-level distribution network to supply power to various users. generate electricity: It is the unit that produces electric energy that uses ground solar energy, ground wind energy, high-altitude wind energy, crustal thermal energy, magma thermal energy, tides, waves, seawater temperature differences, nuclear fusion energy, coal, water energy and other available energy to generate electricity. After boosting, it is transmitted to the Internet. This is the power generation link. powered by: It is the link where the power supply department rationally schedules and operates the power transmission network, and then transmits the electric energy to the users through the voltage reduction equipment, including: Transmission lines, voltage reduction equipment. High voltage refers to the voltage above 1 kV. Generally, the voltage distributed to the incoming line end of the substation is high voltage distribution. Low voltage power distribution refers to the voltage distributed to each end user after transformer transformation does not exceed 0.4 kV, which is low voltage distribution.