What is a substation?

Substation, a place where the voltage is changed. In order to transmit the electric energy emitted by the power plant to a far place, the voltage must be raised into high voltage, and the voltage must be reduced near the user as needed, and the work of this voltage rise and fall is completed by the substation. The main equipment in a substation is switches and transformers.

Depending on the size, the smaller ones are called substations. Substations are larger than substations. Substations: generally step-down substations with voltage levels below 110KV; Substations: including "boost, buck" substations of various voltage levels.

Substation is a power system in the power system to change voltage, accept and distribute electric energy, control the flow of power and adjust the voltage of the power facilities, it through its transformer to connect all levels of voltage grid. Substation in a specific environment; Is the process of converting AC-DC-AC. Like undersea power cables and long-distance transmission. Some use the form of HVDC transmission and transformation. Dc transmission overcomes the capacitive reactance loss of AC transmission. It has energy-saving effect.

The substation is mainly high voltage transformer medium voltage, or high voltage transformer low high voltage, the substation occupies a large area, according to different voltage levels and capacity. So some people call it a transformer station...

Location:

From the perspective of power supply economy, the transformer station should be close to the load center. From the perspective of production, the transformer station should not hinder production and intra-plant transportation, and the transportation of the transformer station's own equipment should also be convenient. From the perspective of safety, the substation should avoid flammable and explosive places. The transformer station should be located on the upwind side of the unit. In enterprises, it is not easy to be located in places where dust and fibers are easily deposited. Power stations should not be located in densely populated areas. The site selection and construction of transformer distribution stations should also take into account the requirements of fire suppression, corrosion prevention, pollution prevention, water protection, rain prevention, snow prevention, shock prevention and the prevention of small animals from drilling. (Specification attention!)

Functions:

A substation is a transition device connecting a power plant to a user. Since the power plant is very far from the city and the factory that uses electricity, and the voltage emitted by the power plant is not high, so the current is very large, if the current is large, it will generate a lot of heat on the transmission line according to Joule's law, which will cause damage to the transmission line, and the conversion of current into heat is also a loss, so it is necessary to increase the voltage of the power plant through the substation. To 500,000 volts, and then long distance transmission to our cities and factories, and then through the local substation to reduce the voltage, through the power distribution and other measures into our daily 220 volts voltage.