The overall structure of the box station refers to the arrangement of the three main parts of the box station-the high-voltage switchgear, the transformer, and the low-voltage power distribution device. From the perspective of home and abroad, the overall layout of box-type stations mainly has two forms: one is a combined type, and the other is an integrated type. The so-called combination type refers to the arrangement of these three parts as one room and forming a "mesh" or "pin" type. The integrated type refers to the transformer as the main body, and fuses and load switches are installed in the transformer box to form an integrated arrangement. China is an actively adopting standard of the IEC standard, so the box stations in our country are combined.

In a combined box transformer, the room where the high-voltage switchgear is located is generally called the high-voltage room, the room where the transformer is located is generally called the transformer room, and the room where the low-voltage power distribution device is located is called the low-voltage room. These three rooms can be arranged in two types in the box station, namely the "mesh" type arrangement and the "pin" type arrangement.

The box box substation is unique in its box material. This material is made of reinforced glass fiber polyester material with a variety of hard buoys. The main characteristics of this shell material are as follows:

(1) High mechanical strength, light weight, surface resistance to knocking and scratching, and can prevent the invasion of harmful substances and pests.

(2) Anti-ultraviolet radiation, good anti-exposure performance, the inside is equipped with special materials that are difficult to burn, and the thermal conductivity of the shell is equivalent to the thermal conductivity of bricks of about 24cm thickness. It can avoid the temperature rise inside the box due to the external temperature.

(3) This material achieves the best insulation value by embedded hard floating bubbles, and the noise reduction value reaches 37.9 dB at 2500 Hz.

(4) Easy to shape, good shape variability, strong decoration, and adaptability and coordination to the environment. Its surface can be decorated into various forms such as imitation fur surface and small gravel surface according to the user's choice. Dotted effect.

5 (5) Moisture-proof, flame-retardant, and corrosion-resistant, can adapt to various climatic conditions, and the shell will not generate condensation due to cold and heat alternation.

6 (6) Assembly is simple and convenient, suitable for various structural requirements.

At present, this type of box station has been widely used in urban network reconstruction in many cities in China.