Is the State Grid a substation?

No.

A substation is a place where voltage is changed. In order to transmit the electric energy from the power plant to a distant place, the voltage must be increased to high voltage, and then the voltage must be lowered as needed near the user. This voltage increase and decrease is completed by the substation. The main equipment of a substation is switches and transformers. Depending on the size, the smaller ones are called substations. A substation is larger than a substation. Substation: generally a step-down substation with a voltage level below 110KV; substation: including "step-up and step-down" substations of various voltage levels. As shown in the picture:

State Grid Corporation (State Grid), referred to as State Grid or State Grid, was established on December 29, 2002. It is a pilot institution and state-controlled company approved by the State Council for state-authorized investment. unit. As an important state-owned enterprise related to national energy security and the lifeline of the national economy, the company takes the construction and operation of power grids as its core business and undertakes the basic mission of ensuring safer, more economical, cleaner and sustainable power supply. Its operating area covers the whole country. 26 provinces (autonomous regions and municipalities), covering 88% of the country's land area, supply power to more than 1.1 billion people, and the company's total employees exceed 1.86 million.

In short, a substation is a device used to change voltage, and the State Grid is a company. It can only be said that State Grid owns and manages a large number of substations, but it cannot be equated between them.