Substation

The substation is an important facility in the power system for transforming and distributing electric energy, mainly used to step up or step down the transmitted electric energy to adapt to different voltage levels and customer needs. Substation usually consists of transformers, switchgear, protection equipment, metering equipment, control equipment and so on.

In terms of voltage level, with the development of electric power technology, the small grid transmission mode with a small number of 110kV and 220kV substations as hub substations and 35kV as terminal substations has gradually developed into a large grid transmission mode with extra-high voltage 1000kV substations and 500kV substations as hub substations and 220kV and 110kV substations as terminal substations. In terms of electrical equipment, the primary equipment is developed from the original open outdoor equipment to the fully enclosed gas combination apparatus (GIS) and semi-enclosed gas combination apparatus (HGIS); the secondary equipment is developed from the early transistor and integrated circuit protection to microcomputer protection.

(1) A class of substation. It refers to the AC ultra-high voltage station, nuclear power, large energy base (3 million kw and above) outgoing and cross-region (North, Central, East, Northeast, Northwest) liaison 750/500/330kV substation.
(2) Second-class substations. It refers to other than the first class substations, 750/500/330kV substations, power plant outgoing substations (1 million kW and above, 3 million kW or less) and cross-province liaison 220kV substations, main transformer or bus outage, switch rejection caused by the fourth level and above grid events.

(3) three types of substations. Refers to 220kV substations other than category II, power plant outgoing substations (300,000kW and above, 1 million kW or less), main transformer or bus outage, switch rejection caused by a five-level grid event substations, substations directly supplying power to important users at the first level and above.
(4) Class IV substations. It refers to the 35kV and above substations other than the first, second and third category.
Note: All 220kV substations in the work area are Class III substations, and all substations at 110kV and below are Class IV substations.

The substation plays an important role in the power system, and its reliability and safety have a vital impact on the stable operation of the power system. Therefore, during the design, construction and operation of substations, it is necessary to comply with the relevant power standards and specifications, and to carry out scientific and reasonable design and reasonable configuration to ensure the safe, reliable and efficient operation of substations.
Enameled wire products can all be used in the power industry equipment, our company will participate in power exhibitions every year, visit customers and show products